IEEE / PES Transformers Committeegrouper.ieee.org/groups/transformers/meetings/f2005_memphis/... · IEEE / PES Transformers Committee Meeting October 23, 2005 ... Angell, Don Antosz,

IEEE / PES

Transformers

Committee

Meeting Minutes October 23, 2005

IEEE / PES Transformers Committee Meeting

October 23, 2005

Memphis, TN USA

Unapproved

Minutes and information available on the Committee Website:

www.transformerscommittee.org

IEEE/PES TRANSFORMERS COMMITTEE MEETING Memphis, TN, USA

October 23-27, 2005

ATTENDANCE SUM MARY

Main Committee Meeting Attendees

Alfonso, Nelson Amos, Richard Anderson, Gregory Angell, Don Antosz, Stephen Arnold, James Arteaga, Javier Asano, Roberto Baldauf, Joao Barrientos-Torres, Israel Bartley, William Beaster, Barry Beckman, Stephen Benson, Richard Betancourt, Enrique Blackburn, Gene Blew, David Boettger, William Boman, Paul Bray, Frank Britton, Jeffrey Burns, Clayton Bush, Carl Callsen, Thomas Cancino, Alvaro Castellanos, Juan Chu, Donald Claiborne, C. Clair Colopy, Craig Cooper, Tommy Corkran, Jerry Crotty III, John Darby, John Darwin, Alan Davis, Eric Del Rio, J. Arturo Dorris, Don Drexler, Charles Duckett, Don Dudley, Richard Elliott, Fred

Ellis, Keith Fairris, James Fallon, Donald Filer, Douglas Foldi, Joseph Foster, Derek Galloway, Dudley Ganser, Robert Garcia, Eduardo Garcia, Ramon Gardner, James Garner, Charles Getson, Douglas Ghafourian, Ali Ghosh, Saurabh Gill, Geoffrey Gomez-Hennig, Eduardo Graham, James Graham, John Griesacker, Bill Gruber, Myron Guardado, Jeremy Hammer, Mark Hammers, Jack Hanique, Ernst Hanus, Ken Harlow, James Hayes, Roger Heinzig, Peter Henning, William Hicks, Wayne Hochanh, Thang Hoffman, Gary Hollingsworth, Richard Hopkinson, Philip Horning, Michael Huff, Timothy Iman, Mike James, Jr., Rowland Johnson, Charles Jonnatti, Anthony

Kadar, Laszlo Kalra, C J Kennedy, Gael Kennedy, Sheldon Khalin, Vladimir Kilgore, James Klaponski, Brian Kyle, Randall Lackey, John Lau, Michael Lee, Dennis Lemke, Eberhard Lewis, Timothy Lowdermilk, Larry Lu, Franklin Lundquist, Thomas Machado Junior, Tamyres Marek, Richard Marlow, Dennis Matthews, John Matthews, Lee McBride, James McNelly, Susan McShane, Charles Patrick Mehta, Shirish Miller, Kent Molden, Arthur Moore, Harold Morehart, Walter Mulkey, Daniel Mushill, Paul Navarro, Martin Neuls, Flavio Neves da Silva, Alexandre Nguyen, Van Nhi Nichols, Bruce Niemann, Carl Olson, Tim Oommen, T.V. Oriti, Samuel Paiva, Gerald

Papp, Klaus Parkinson, Dwight Patel, Bipin Patton, Jesse Perlichek, Robert Peterson, Alan Platts, Donald Poulin, Bertrand Prevost, Thomas

Progar, John Puri, Jeewan Radbrandt, Ulf Raymond, Timothy Riboud, Jean-Christophe Riffon, Pierre Robitaille, Mireille Rossetti, John Schuette, Christoph

Schweiger, Ewald Serzan, Jeffrey Sharma, Devki Shteyh, Ibrahim Shull, Stephen Sim, H. Jin Singh, Pritpal Smith, Edward

Snyder, Steven Sparling, Brian Spitzer, Thomas Stahara, Ronald Stein, John Steineman, Andrew Stensland, Leonard Stiegemeier, Craig Strongosky, Neil

Termini, Giuseppe Thompson, Robert Tillman, Robert Tolbert, George Traut, Alan Trivitt, Donnie Troxell, Greg Tuli, Subhash Twibell, Brian

Verdolin, Roger Wagenaar, Loren Wallach, David Ward, Barry Wilks, Alan Williams, Randy Yule, Kipp Zhao, Peter

TRANSFORMER COMMITTEE MEMBERS AT MAIN COMMITTEE MEETING

Anderson, Gregory Angell, Don Antosz, Stephen Arnold, James Arteaga, Javier Bartley, William Beaster, Barry Benson, Richard Blackburn, Gene Boettger, William Callsen, Thomas Chu, Donald Colopy, Craig Cooper, Tommy Corkran, Jerry Crotty III, John Darwin, Alan Davis, Eric Duckett, Don Dudley, Richard Elliott, Fred Ellis, Keith Fallon, Donald Foldi, Joseph Foster, Derek Galloway, Dudley Gardner, James Gruber, Myron Hammers, Jack Hanique, Ernst Hanus, Ken Harlow, James Hayes, Roger

Heinzig, Peter Henning, William Hochanh, Thang Hollingsworth, Richard Hopkinson, Philip Iman, Mike James, Jr., Rowland Johnson, Charles Jonnatti, Anthony Kennedy, Sheldon Khalin, Vladimir Lackey, John Lau, Michael Lewis, Timothy Lowdermilk, Larry Lundquist, Thomas Marek, Richard Marlow, Dennis Matthews, John Matthews, Lee McNelly, Susan McShane, Charles Patrick Mehta, Shirish Miller, Kent Molden, Arthur Moore, Harold Morehart, Walter Mulkey, Daniel Nguyen, Van Nhi Niemann, Carl Olson, Tim Paiva, Gerald Papp, Klaus

Patel, Bipin Patton, Jesse Platts, Donald Poulin, Bertrand Prevost, Thomas Progar, John Puri, Jeewan Raymond, Timothy Riffon, Pierre Rossetti, John Schweiger, Ewald Sharma, Devki Shull, Stephen Sim, H. Jin Singh, Pritpal Smith, Edward Snyder, Steven Spitzer, Thomas Stahara, Ronald Stensland, Leonard Stiegemeier, Craig Termini, Giuseppe Thompson, Robert Tuli, Subhash Verdolin, Roger Wagenaar, Loren Wallach, David Ward, Barry Wilks, Alan Williams, Randy Zhao, Peter

COMMITTEE MEMBERS AND GUESTS PRESENT AT FALL 2005 MEETING: ABI-Samra, Nick Ahuja, Raj Alfonso, Nelson Allen Jr, William Allen, Jerry Amos, Richard Anderson, Gregory Andersson, Sten Angell, Don Antosz, Stephen Antweiler, Jim Armstrong, James Arnold, James Aromin, Venzon Arpino, Carlo Arteaga, Javier Asano, Roberto Baldauf, Joao Ballard, Jay Balma, Peter Baranowski, Derek Barnard, David Barnett, Darren Barrientos-Torres, Israel Bartek, Allan Bartley, William Bassett, Thomas Beaster, Barry Beckman, Stephen Benach, Jeff Benson, Richard Bertolini, Edward Betancourt, Enrique Bittner, Carlos Blackburn, Gene Blackmon, Jr., James Blew, David Boettger, William Boman, Paul Bonecutter, Thayer Boston, David Bray, Frank Breytenbach, Richard Britton, Jeffrey Brown, Steven Brush, Edwin

Buchanan, Paul Burns, Clayton Burns, David Bush, Carl Cai, Jim Callsen, Thomas Cancino, Alvaro Cantrell, Rick Cargol, Tim Carulli, Joeseph Caruso, Charles Caskey, John Castellanos, Juan Cheung, Joseph Childs, Scott Chisholm, Paul Chiu, Bill Chmiel, Frank Cho, Justin Chu, Donald Claiborne, C. Clair Coffeen, Larry Colopy, Craig Comely, Tracy Cooper, Tommy Corel, Dale Corkran, Jerry Corsi, Domenico Costa, Florian Cox, Philip Crotty III, John Cultrera, Joseph Damico, Frank Darby, John Darwin, Alan Davis, Eric Davis, Larry Davydov, Valery de la Cruz, Dan Degeneff, Robert Del Rio, J. Arturo dela Houssaye, Kevin Dix, Larry Dohnal, Dieter Dorris, Don Drexler, Charles

Duart, Jean-Claude Duckett, Don Dudley, Richard Dunlap, David Elliott, Fred Ellis, Keith Fairris, James Fallon, Donald Faulkenberry, Michael Feghali, Pierre Filer, Douglas Foldi, Joseph Forsyth, Bruce Fortin, Marcel Foster, Derek Foster, Mary Fridman, Harry Galbraith, Shawn Galloway, Dudley Ganser, Robert Garcia, Eduardo Garcia, Ramon Gardner, James Garner, Charles Garza, Joseph Getson, Douglas Ghafourian, Ali Ghosh, Saurabh Gibson, Wayne Gill, Geoffrey Gilleland, Harley Gillespie, Ron Gines, Marlin Girgis, Ramsis Glass, Bryan Goldsmith, Anne Gomez-Hennig, Eduardo Gonzalez, Jorge Graham, James Graham, John Griesacker, Bill Gruber, Myron Guardado, Jeremy Guerra, Jorge Haas, Michael Hammer, Mark

Hammers, Jack Hanique, Ernst Hanus, Ken Hardin, Michael Harley, John Harlow, James Hayes, Roger Hayman, Brent Heathcote, Martin Heinzig, Peter Henning, William Herz, Josh Hicks, Wayne Hochanh, Thang Hoffman, Gary Hofstee, Bert Holifield, Thomas Hollingsworth, Richard Holsomback, Steve Hopkinson, Philip Horning, Michael Hsu, Alex Huff, Timothy Hussain, Mohammad Ibarra, Rolando Iman, Mike Jafarnia, Mostafa Jakob, Fredi Jakob, Karl James, Jr., Rowland Jaroszewski, Marion Jauch, Erwin Jenkins, Beverly Johannson, Larry Johnson, Charles Johnson, Wayne Jonnatti, Anthony Jordan, Stephen Joyner, Murray Kadar, Laszlo Kahanek, William Kalra, C J Keithly, David Kennedy, Gael Kennedy, Sheldon Khalin, Vladimir Kilgore, James King, Gary Kircher, Christophe Kirshner, Dave Klaponski, Brian

Kopp, Alvin Kraemer, Axel Krump, Reiner Kurth, Bernhard Kyle, Randall Lackey, John Ladroga, Richard Langan, Robert Lau, Capitola Lau, Michael Lee, Dennis Lemke, Eberhard Leuenberger, Boyd Lewand, Lance Lewis, Timothy Lidstrvm, Patric Lindgren, Stanley Lowdermilk, Larry Lu, Franklin Lundquist, Thomas Luo, Shawn Machado Junior, Tamyres Mamtora, Jitendra Mani, Kumar Marek, Richard Marlow, Dennis Martin, Terence Martin, W. Michael Martins, Alberto Matthews, John Matthews, Lee May, Randel Mayer, Robert McBride, James McCulla, Gary McIver, James McNelly, Susan McShane, Charles Patrick McTaggart, Ross Medina Pena, Miguel Mehta, Shirish Meilleur, JF Miller, Kent Millward, Paul Milton, Curtis Moffat, Jock Molden, Arthur Moore, Harold Morehart, Walter Morgan, Dan Morris, Tim

Mucha, Rick Mulkey, Daniel Murphy, Jerry Mushill, Paul Navarro, Martin Neal, Jason Neuls, Flavio Neves da Silva, Alexandre Nguyen, Van Nhi Nguyen, Vuong Nicholas, Ray Nicholas, Ron Nichols, Bruce Niemann, Carl Nims, Joe Nordman, Hasse O'Leary, Brian Olen, Robert Olson, Tim Oommen, T.V. Oriti, Samuel Orr, Mitchel Ortiz, Angela Padgett, Alan Paiva, Gerald Papp, Klaus Park, Moo Geun Parkinson, Dwight Patel, Bipin Patel, Dhiru Patel, Sanjay Patton, Jesse Perkins, Mark Perlichek, Robert Peterson, Alan Pink, Tony Pinto, Antonio Platts, Donald Ploetner, Christoph Poulin, Bertrand Powell, Paulette Power, Greg Prevost, Thomas Progar, John Psyck, Rip Puri, Jeewan Radbrandt, Ulf Rahmatian, Farnoosh Rawls, Earl Ray, Jeff Raymond, Timothy

Razuvayev, Sergiy Reddick, Charles Rega, Chris Rensi, Randolph Revelle, Ryland Riboud, Jean-Christophe Riffon, Pierre Ristuccia, Donald Roberts, Mark Robitaille, Mireille Roizman, Oleg Rosselli, Girolamo Rossetti, John Sahr, Christina Salva, Josi Sampat, Mahesh Sandhu, Surinder Sankarakurup, Dinesh Santana, Juan Sarkar, Subhas Schroeder, Stephen Schuette, Christoph Schweiger, Ewald Senne, Douglas Serzan, Jeffrey Sestito, John Sewell, Jeremy Sewell, Russell Sharma, Devki Shor, Andre Shteyh, Ibrahim Shull, Stephen Silva, Jorge Sim, H. Jin

Simoes, Joaquim Singh, Pritpal Smith, Charles Smith, Edward Smith, James Snyder, Steven Sousa, Joao Sparling, Brian Speegle, Andy Spitzer, Thomas Stahara, Ronald Stankes, David Stein, John Steineman, Andrew Steinhagen, Jennie Stenestam, Bengt-Olof Stensland, Leonard Stiegemeier, Craig Strongosky, Neil Sullivan, Christopher Sullivan, John Sullivan, John Sullivan, Richard Sundkvist, Kjell Sweetser, Charles Swinderman, Craig Tellez, Richard Ten Haagen, Christopher teNyenhuis, Ed Termini, Giuseppe Thierry, Juan Luis Thompson, Jim Thompson, Robert Tillman, Robert

Todd, Brett Tolbert, George Tong, Lin Traut, Alan Trivitt, Donnie Troxell, Greg Tuli, Subhash Twibell, Brian Vailoor, Vasanth Verdolin, Roger Verner, Jane Ann Vir, Dharam Vogel, Herman Vogel, Susan vonGemmingen, Richard Wagenaar, Loren Wallach, David Walters, Shelby Ward, Barry Whitehead, William Wicks, Roger Wiegand, Dave Wilks, Alan Williams, Randy Wiseman, Jim Wolfe, Frank Wyatt, John Xu, Shuzhen Yuasa, Sadayuki Yule, Kipp Zhang, Jim Zhang, Shibao Zhao, Peter Ziomek, Waldemar

.

COMMITTEE MEMBERS NOT PRESENT AT FALL 2005 MEETING: Aho, David Allan, Dennis Allustiarti, Raymond Ares, Ignacio Ayers, Donald Barker, Ron Barnes, Michael Binder, Wallace Borst, John Cash, Donald Crouse, John Darovny, William Daubert, Ronald Ferreira, Marcos Fleeman, Jeff Franchek, Michael Gaytan, Carlos Graham, Richard Grunert, Robert Gryszkiewicz, Frank Haas, Michael Hager Jr., Everett Haggerty, N Kent Hall, A C

Hansen, Wayne Hartgrove, Robert Jhonsa, Virendra Juhlin, Lars-Erik Kelly, Joseph Kennedy, William Kline, Alexander MacMillan, Donald Makinson, David McClure, Phillip McQuin, Nigel Musil, Richard Orehek, Paul Patterson, Wesley Pekarek, Thomas Perco, Dan Pierce, Linden Preininger, Gustav Purohit, Dilip Raymond, Charles Reed, Scott Reitter, George Risse, Peter Robbins, Chris

Robinson, Arlise (Butch) Romano, Ken Russwurm, Dirk Sankar, Vallamkonda Savio, Leo Schappell, Steven Shertukde, Hemchandra Smith, James Smith, Jerry Snyder, Aaron Stewart, Peter Stoner, Ronald Traub, Thomas Trummer, Edgar Vaillancourt, Georges Veitch, Robert Watson, Joe Weffer, Felipe Whearty, Robert Wimmer, William Woodcock, David Ziomek, Waldemar

Table of Contents 1.0 Chair�s Report, Remarks and Announcements � K.S.Hanus 1 2.0 Approval of Minutes of October 23, 2005- K.S. Hanus 3 3.0 Administrative Subcommittee � K.S. Hanus 3 3.1 Introduction of members and guests 3 3.2 Approval of the Memphis meeting minutes 4 3.3 Additions to and/or approval of the agenda 4 3.4 Meeting Arrangements, Host Report and Committee Finances- GW Anderson 4 3.5 IEEE Staff � Jodi Haasz 5 3.6 Committee Service Awards � H.J. Sim 5 3.7 Chair�s Report � K.S. Hanus 5 3.8 Vice Chair�s Report � D.J. Fallon 5 3.9 Secretary�s Report � T.A. Prevost 6 3.10 Standards Subcommittee � B.Chiu 9 3.11 Round-Table: Subcommittee Activities � Subcommittee Chairs 9 3.12 Old Business 11 3.13 New Business 11

3.14 Adjournment 11 4.0 Vice Chair�s Report � D.J. Fallon 11 5.0 Transformer Standards � Bill Chiu 14 6.0 Recognition and Awards � H.J. Sim 24 6.1 Certificates of Appreciation 24 6.2 Nominations for IEEE, PES and Technical Council Awards 25 6.3 Awards � General 25 7.0 Reports of Technical Subcommittees 26 7.1 HVDC Converter Transformers & Reactors Subcommittee � R.F. Dudley 26

7.2 Instrument Transformers Subcommittee � J.E. (Jim) Smith 28 7.3 Insulating Fluids Subcommittee � F. Gryszkiewicz 31 7.4 Insulation Life Subcommittee � D.W. Platts 37 7.5 Performance Characteristics Subcommittee � R.S. Girgis 49 7.6 Power Transformer Subcommittee � T. G. Lundquist 68 7.7 Underground Transformers & Network Protectors � C.G. Niemann 77 7.8 Audible Sound and Vibration � J.L. Puri 81 7.9 Bushings � F.E. Elliott 81 7.10 Dry Type Transformers Subcommittee � C.W. Johnson 85 7.11 Distribution Transformers Subcommittee � J.E. (Ed) Smith 92 7.12 Dielectric Test Subcommittee � L.B. Wagenaar 102

8.0 Editor�s Report � S. Antosz 112 9.0 Meetings Planning Subcommittee � G.W. Anderson 115 10.0 Reports of Liaison Representatives 119 10.1 SCC4 � P.A. Payne 120 10.2 IEC TC 14 Technical Advisor to USNC � P.J. Hopkinson 121

10.3 CIGRE � J.C. Riboud 121 11.0 Old Business 125 12.0 New Business 125

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1.0 Chair’s Report, Remarks & Announcements – K.S. Hanus 1.1 Technical Council 1.1.1 Upcoming Technical Events The next PSCE (Power Systems Conference & Exposition) sponsored by PES will be October 29 � November 1, 2006 in Atlanta, Georgia. PSCE is held in the fall on alternating years, when the T&D Exposition is not being held. The theme of the exposition is: New Solutions for New Challenges In Power Systems Operation, Planning, Policy, Markets, Analysis, and Control The technical paper and panel session track will be:

• Track 1: Planning and Operation

• Track 2: Markets, Policies, and Economics

• Track 3: Dynamic Performance of Power Systems

• Track 4: Real-Time Applications

• Track 5: Education-Understanding Power Systems For more information go to www.pscexpo.com 1.1.2 Wind Power Coordinating Committee In the past technical efforts relating to wind power were under the auspices of the Emerging Technologies Coordinating Committee. With the amount of work being done in this area, Technical Council is working to setup a dedicated coordinating committee dedicated to wind power. A proposed scope was discussed and is shown below. Proposed Wind Power Coordinating Committee Scope:

• Serve as a focal point within the Power Engineering Society for the identification of issues dealing with the integration and interconnection of wind plants on the bulk transmission system.

• Serve as the point of coordination for other organizations dealing with similar

issues (AWEA, UWIG, FERC, IEC TC57, CIGRE) and help identify the appropriate technical resources within the PES to address the issues.

• Seek opportunities to conduct jointly sponsored activities to promote the sharing

of knowledge and experience among diverse organizations working on similar issues through the conduct of studies, symposia, workshops, panel discussions and tutorials.

• Identify the need for guides, recommended practices and standards with respect

to the planning and operation of wind plants connected to the bulk transmission

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system. Implement any required actions through cooperation with an appropriate technical committee.

1.1.3 Policy Development Coordinating Committee There was much discussion about the development of a statement on Energy and Environment from a PES standpoint. It was also discussed the amount of involvement in this area by PES has not been what it should be. Below is an excerpt from a proposed policy statement by PES. Taken from---- POLICY STATEMENT ON ENERGY & ENVIRONMENT (Prepared by the IEEE-PES Policy Development Coordinating Committee) The provision of abundant and economic energy supplies is one of the key ingredients in solving many of the world's ills and is a global and commercial priority. The harnessing of economical energy to replace human effort has led to the high standard of living today in the developed countries. Continued growth in the services that energy can provide will allow for new levels of improved quality of life, particularly in the developing countries, assuming that equivalent environmental controls to those in the developed countries are implemented. The central core of this policy is to increase the efficient use of energy while reducing waste without creating or aggravating local or global economic and environmental issues. The three basic principles of this policy are:

1. Encouragement for the development of new sources of supply to the extent that they are abundant, economical, environmentally friendly and pose minimal risk to public health and safety.

2. Infrastructure growth to move energy from where it is converted to where it is used.

3. Energy efficiency improvement to minimize the requirements for energy and the environmental impacts.

Anyone interested in providing input to the subject should contact the PDCC. 1.2 IEEE Standards Board 1.2.1 NESCOM The IEEE Standards Board NESCOM (New Standards Committee) committee has recently been taking a position on PAR extensions to not just automatically grant them, especially on the second extension. For extension requests to flow through NESCOM for approval with minimal problems users should provide why the extension is needed and provide a work plan to detail how the work will be completed in the time allowed by the extension. NESCOM wants to make sure the work can be completed in the time allotted before approving extensions Another issue which can cause problems on PAR submittals is when a NESCOM member has a comment and the sponsor does not respond in a timely manner.

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Sponsors of documents should always respond in a timely manner. It has to be remembered NESCOM is made up of people from a diverse group of engineering backgrounds and everyone has a different take on things. 1.2.2 IEEE SA The IEEE SA (Standards Association) has found that many working groups and task forces do not have any kind of O&P manual or rules to work under. As a result they are developing a set of model rules and operating procedures for use by working groups and task forces. Some of the rules will be mandatory and some are suggested. In the case of the TC we will take the model rules and incorporate them into our O&P manual. The rules cover issues such as balloting rules, membership requirements and meeting procedures. Respectfully submitted, Ken Hanus Chair, IEEE PES Transformers Committee 2.0 Approval of Minutes from Fall 2005 Meeting – K.S. Hanus Chair asked that a motion be made to approve the minutes of the Fall 2005 meeting. A motion was made and seconded to approve the minutes. This is unanimously approved. 3.0 Administrative Subcommittee – Ken Hanus Chairman Ken Hanus covered the key points of the Administrative Subcommittee Meeting held on October 23, 2005. Full details of the Minutes of the Administrative Subcommittee Meeting Minutes follow. 3.1 Introduction of members and guests Chairman Hanus called the meeting to order at 2:00 p.m., Sunday, October 23, 2005, at the Peabody Hotel in Memphis, Tennessee. The meeting started with introductions of members and guests. The following members of the Subcommittee were present: Gregory Anderson Bill Chiu Richard Dudley Donald Fallon Ramsis Girgis Ken Hanus Charles Johnson Thomas Lundquist Carl Niemann

Donald Platts Thomas Prevost Jeewan Puri H. Jin Sim Edward Smith (Ed) Loren Wagenaar

Dan Mulkey Peter Zhao The following members were absent: Frank Gryszkiewicz Steve Antosz Edward Smith (Jim) Fred Elliott The following guests were present:

Jennie Steinhagen Richard Ladroga (representing Frank Gryszkiewicz, Insulating Fluids Subcommittee)

Angela Ortiz Stephen Shull Sue Vogel Peter Balma

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3.2 Approval of the Jackson meeting minutes The minutes of the previous Administrative Subcommittee meeting in Jackson were approved as written. 3.3 Additions to and/or approval of the agenda The Agenda provided by the Chair prior to the meeting was approved. 3.4 Meeting Arrangements, Host Reports, and Committee Finances – G.W.

Anderson 3.4.1 Meetings Arrangements Randy Williams welcomed everyone to Memphis. Gave meeting stats. This is the largest attendance transformers committee meeting. Approximately 20% are newcomers. Technical Tours: ABB Alamo 130 Attending Reinhausen 195 Attending ERMCO 30 Attending Bill Chiu and Southern California Edison will host next Transformers Committee meeting in Costa Mesa, California on March 19-23, 2006. Room rate at the Hilton will be $139 double or single. Hotel is close to Orange County Airport. Future Meeting Dates: Costa Mesa, California March 19-23 , 2006 Montreal, Quebec Canada October 22-26, 2006 Open March 11-15, 2007 Porto, Portugal Fall 2008 3.4.2 Finances Meeting Finances: Balance before Spring 2005 Meeting $3,002.58 Balance before Fall 2005 Meeting $18,793.02 Two (2) PC Projectors were purchased by the committee. The goal is to have projectors available for every meeting. This will be supplemented by local hosts. Goal is to add to this supply of projectors over the next years. Sue Vogel inquired as to who she should refer other PES groups to if they have any questions regarding the AM system, 123Signup. Greg replied that he was the contact. 3.4.3 AM System Greg provided an administrative access list to Adcom for review. Subcommitte Chairs were asked to check the list. All working group and task force chairs should be on the list.

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Sue Vogel inquired as to whom she should refer other PES groups to if they have any questions regarding the AM system, 123Signup. Greg replied that he was the contact.

3.5 IEEE Staff – Angela Ortiz, Sue Vogel, Jennie Steinhagen, Chris Sahr Sue Vogel � Four members of the IEEE are present for this meeting. Each member of the staff is here for separate reasons, however in general Sue commented that IEEE is here to support the Transformers Committee and encourages feedback and interaction. Angela Ortiz is the IEEE Staff Liason. Jennie Steinhagen will present information on the new word template at the Tuesday Luncheon. In the future documents will be published from a word document. Angela Ortiz will present My Ballot in regards to ballot resolution. All are encouraged to attend the Standards Luncheon on Monday afternoon. Chris Sahr is here to get feedback on the �My Project� system. Peter Balma suggested that a tutorial on �figures� in Transformer Committee documents should be added to the Standards luncheon. IEEE will sponsor the next Standards Luncheon at the Spring 2006 meeting . Greg suggested that we may want to change the timeslot of the standards review process to a more prominent position. Dual Logo We have been asked to submit another candidate for dual logo status. Chairman Hanus proposed that we submit C57.123, IEEE Guide for Transformer Loss Measurement. This was unanimously approved by the administrative subcommittee. A PAR is needed for revision of C57.135, which is a dual logo document. Tom Lundquist indicating that Jim McIver, WG Chair, will initiate a revision process. 3.6 Committee Service Awards – H.J. Sim Jin indicated that the awards report was distributed prior to this adcom meeting and it will be included in the main committee minutes. 3.7 Chair’s report – K.S. Hanus

Ken stated that the Chair�s report was distributed prior to the Adcom meeting. The Chair�s report will be included in the main Committee minutes.

3.8 Vice Chair’s report – D.J. Fallon Don�s report was distributed prior to this meeting and is included in the main committee minutes.

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The T&D meeting was canceled due to the problems in New Orleans after Hurricane Katrina. There were several papers approved for presentation in a panel session at the T&D meeting. Don expressed his appreciation for the effort put forth by committee members for submission of these papers for the T&D meeting. Don noted that we are late in revising the O&P manual. He stated that he and Ken planned on completing this revision before the end of this year. Task for an article submission for Power and Energy Magazine is still pending. Don asked the members of Adcom to poll their members to ask if anyone has a suggestion for an article for Power and Energy magazine. 3.9 Secretary’s Report – T.A. Prevost 3.9.1 Membership Review

Voting Members �Six new members were added at the last meeting in Jackson:

• Giuseppe Termini PECO Energy User

• Ed teNyenhuis ABB Inc. Producer

• Thomas W. Bassett Power Equipment Specialists Producer

• Thomas W. Spitzer TXU Electric Delivery User

• Roger Verdolin SNC Lavalin ATP User

• John Crotty San Diego Gas & Electric User

Welcoming letters will be sent to these new members. Our aim is to encourage active participation in the work of the Committee, and encourage all participants to become members of the Committee. The classification Corresponding Member needs to be defined in the next update of the Committee O&P Manual. This classification should hold the same status as that of regular Member. Membership, including changes made at the Jackson meeting now stands at:

Members - 187 Classifications: Producers - 63 Users - 44 General -

i t t61

Life Members 11 Corresponding Members - 1 Emeritus Members - 7

The committee database is now fully converted to the 123sign-up committee AM system.

Committee Members (inc. Life/Corr/Emeritus) Number Ratio (%) Producer OEM - components, materials, etc. 13 OEM - Other 1 OEM - transformers, instrument transformers, etc. 55 sub Total 69 37

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User Industrial/Other 1 Utility - investor-owned 31 Utility - public-owned 12 sub Total 44 24 General Interest Consultant/Other 74 40 Total Committee Members 187 Active Participants Producer OEM - components, materials, etc. 29 OEM - Other 8 OEM - transformers, instrument transformers, etc. 106 sub-Total 143 58 User Industrial/Other 5 Utility - investor-owned 31 Utility - public-owned 12 sub Total 48 20 General Interest Consultant/Other 55 22 Total Active Particpants 246 Interested Individual Producer OEM - components, materials, etc. 41 OEM - Other 16 OEM - transformers, instrument transformers, etc. 98 sub Total 155 57 User Industrial/Other 4 Utility - investor-owned 35 Utility - public-owned 23 sub Total 62 23 General Interest Consultant/Other 54 20 Total Interested Individual 271 Total Individuals in AM System 704

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Summary of Transformer Committee Participation

020406080

100120140160180

CommitteeMembers

Active Participants InterestedIndividual

ProducerUserGeneral Interest

3.9.2 New Member Applications

New applications for Committee Membership have been submitted for: David N. Makinson Intron Inc. Producer Aaron F. Snyder Intron Inc. Producer Lee Matthews Howard Industires Inc. Producer Robert C. Olen Cooper Power Systems Producer Larry J. Davis Reuel Inc. Producer Richard Hollingsworth Howard Industries Inc. Producer Derek Foster Olsun Electrics Corp. Producer

These applications will be reviewed at the Administrative Subcommittee meeting. The Committee welcomes and encourages active participants to become Members of the Committee. Requirements and application forms can be found in the Organization and Procedures (O&P) Manual, accessible on the Committee website. Subcommittee Chairs are encouraged to recommend new members, and to communicate to applicants awareness that Membership is a privilege gained through active participation in Committee work at the WG and SC level. WG and SC Chairs are reminded also that signing an application sponsoring a new member signifies their understanding that the applicant has met the requirement of membership and active participation for at least one year in the WG or SC they Chair. New member applications can be forwarded to the Secretary�s attention at any time for review at the next AdsubCom meeting.

Page 9 of 136

3.9.3 Committee and Subcommittee Directory Rosters

In order to provide indemnification to working group and subcommittee members it is crucial that membership lists be maintained. Fortunately the new AM system should make this simple to administer. It is important that each Subcommittee and working group chair keep the rosters updated so that this information can be provided to the IEEE SA. 3.9.4 Meeting Minutes

The minutes of the Jackson Spring 2005 transformers committee meeting were posted to the committee website on Wednesday October 19, 2005.

The minutes of the Jackson Spring 2005 meeting were mailed on October 14, to those who ordered printed copies during meeting registration. 60 registrants ordered printed copies of the Minutes. The cost of previous minutes were:

Raleigh (Spring �03) $3946.82

Pittsburgh (Fall �03) $714.27

San Diego (Spring �04) $1481.77 (78 @ $13.60 ea. + $357.17 postage)

Las Vegas (Fall �04) $1084.56 (60@ $12.76 ea. + $319.17 postage)

Jackson (Spring �05) Not Available

Subcommittee Chairs are requested to submit their SC Minutes for the Memphis Meeting by December 15, 2005. Minutes should be submitted via e-mail to the Secretary ([email protected]), with a copy to Susan McNelly ([email protected]) for posting on the Committee website. The submittal should be formatted in Word 2000 (or earlier versions) and it would be appreciated if the Minutes were put in the format as shown in the present assembled Minutes, with numbering as indicated in Main Committee Meeting Agenda. Please indicate total attendance count for each Subcommittee, Working Group, and Task Force meeting in your Minutes. Please do not send a copy of the attendance listing for this attendance count. If a SC Vice-Chair, Secretary, or other SC member is preparing the SC Minutes, please let them know these details about Minutes submittals.

3.10 Standards Subcommittee – B. Chiu Bill Chiu reviewed his report, which is included in the Committee meeting minutes. Special attention was made to review page 4 of the report, which is a list of standards due to expire at the end of 2005.

3.11 Round-Table: Subcommittee Activities - Subcommittee Chairs 3.11.1 Distribution Transformers – Ed Smith Nothing to Report. 3.11.2 Bushings – P. Zhao Nothing to Report.

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3.11.3 HVDC Converter Transformers & Smoothing Reactors - Richard Dudley

• Revision of C57.124 is in process.

• Application for a PAR for the revision of IEEE 1277 is in process. There are problems regarding �Scope and Purpose�. What should be included?

3.11.4 Dry-Type Transformers – Chuck Johnson Nothing to report. 3.11.5 Instrument Transformers - J. E. Smith No report. 3.11.6 Performance Characteristics – R. S. Girgis Peter Balma reported that the Switchgear committee has problems with C57.142. They have submitted negative ballots indicating that the guide is not acceptable. Ramsis indicated that he will need to address this issue directly with the Switchgear Committee. 3.11.7 Meetings & Planning - Greg Anderson Kent Haggerty will develop a queue for tutorials which will be posted on the web. At this meeting we will be selling four books at a meeting discount. 3.11.8 Dielectric Tests - L. B. Wagenaar Nothing to report. 3.11.9 Audible Sound and Vibration – Jeewan Puri Audible sound measurement guide. This has been adopted from IEC and revised for what we do here in America. Jeewan suggested that we issue this as a dual logo document. Sue Vogel commented that a dual logo document needs to fill a void in IEC. Since there is a document existing in IEC, this does not appear to be a candidate for dual logo status. 3.11.10 Underground Transformers and Network Protectors – C. Niemann Nothing to report. 3.11.11 Insulating Fluids – R. Ladroga Richard stated that efforts are continuing to publish C57.104, the �Gas Guide�. 3.11.12 Insulation Life – D. W. Platts Nothing to report.

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3.11.13 Power Transformers – T. Lundquist Nothing to report. 3.12 Old Business Don Fallon reviewed the patent review process. This was distributed via e-mail prior to the meeting. 3.13 New Business 3.13.1 Technical Editor Steve Antosz has communicated that he will step down as editor at the end of this year,. The officers will be contacting potential candidates for this position over the next weeks. Don Fallon asked the Admin subcommittee if they know of anyone who would be interested in this to please let him know. 13.13.2 C57.12.00 and C57.12.90 Bill Chiu indicated the following change to chairmanship : C57.12.90 � Subhash Tuli will continue as WG chair. C57.12.00 � Dong Kim will be new WG chair. Jim Sim added that he is OK with this however the WG chairs need to assure that the documents are published at the same time. 3.14 Adjournment Chairman Hanus adjourned the meeting at 4:40 p.m. Respectfully submitted, T.A. Prevost, Secretary 4.0 Vice Chair’s Report – D.J. Fallon 4.1 PES Technical Council Committees The following items report on activities of Power Engineering Society (PES) Committees on which the Vice Chair serves as Committee representative. These meetings were held at the 2005 PES General Meeting in San Francisco CA on June 12-16. Ken Hanus, Don Fallon, Tom Prevost, Bill Chiu, and Jin Sim represented the Committee at these meetings.

4.1.1 Technical Sessions Committee

Plans for the 2005 Transmission & Distribution Conference & Exposition (TDCE), October 9-13, 2005, in New Orleans were reviewed. The theme was to be �Go with the Flow and Join the Parade of Technology. Unfortunately, as we are all aware, the devastation of Hurricane Katrina resulted in tragic loss of life and property in the New Orleans region, and the 2005 TDCE has been postponed until Spring of 2006. Although

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efforts will be made to re-schedule in New Orleans, the location and dates of the Conference have not yet been set. Announcements are expected shortly. A review was made of plans for the 2006 PES General Meeting in Montreal, Quebec Canada, scheduled for June 18-22. The theme is �Innovation and Reinvestment in Power Infrastructure�. The listing of Preferential Topics for this meeting can be found on the PES website (http://www.ieee.org/portal/site/pes/). Additional items of interest discussed during the Technical Sessions Committee included

• questions on whether paper sessions are addressing the needs of attendees, as attendance is sometimes limited, with suggestion that preferred topic areas bubble up from the Technical Committees to promote more interest

• need to provide the same usefulness found in Technical Committee meetings in the General Meeting sessions and Conferences

All Technical Committees are urged to provide suggestions for improvement in content and interest 4.1.2 Organization and Procedures Committee The Technical Council O&P Manual was modified last year for clarification of procedures and to bring it more in line with current practice. The updates included changes in the following areas:

• References to ballots now indicate the electronic balloting process • Reflection of the change from two PES General Meetings per year to the present

schedule of one • Updates to include IEEE-SA open ballot process and indication that IEEE

Standards meetings are open to all, regardless of membership status Individual Technical Committee O&P Manuals are to be generally formatted similarly to the Technical Council O&P Manual. 4.2 Technical Paper Sessions 4.2.1 Technical Paper Sessions at the 2005 PES General Meeting The Transformers Committee sponsored one technical session at the IEEE/PES 2005 General Meeting in San Francisco. The session included the following papers: Transformers I - Condition Assessment & Analysis Methodologies (paper session) Wednesday, 15 June 8:00 AM-11:00 AM (aligned to Track 1 - Understanding and Responding to System-Wide Events Track • �Transfer Function Analysis Using STFT for Improvement of the Fault Detection

Sensitivity in Transformer Impulse Test� (05GM0230) by E. AL-AMMAR and G. KARADY

• �Transformer Test to Calculate Z0 for Interconnected Windings Transformers Using Symmetrical Sequence Components� (05GM0335) by G. ROSSELLI

• �Diagnosis of Power Transformers Using Modified Self Organizing Map� (05GM0434) by A. OZDEMIR, C. SINGH, J. LIM, J. LEE, P. JI and S. KIM

• �A Transformer Condition Assessment Framework Based On Data Mining� (05GM0250) by J. YUAN, L. WU, X. LI and Y. ZHU

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• �Impact of the Condition of Oil on the Polarisation based Diagnostics for Assessing the Condition of Transformers Insulation� (05GM0426) by P. PURKAIT and T. SAHA

4.2.2 Technical Papers for the 2005 TDCE The Transformers Committee reviewed and approved eighteen technical papers for the 2005 Transmission & Distribution Conference & Exposition, originally planned for October 9-13 in New Orleans, LA. As indicated above that Conference was postponed due to Hurricane Katrina, and will be re-scheduled for the Spring of 2006. In addition to the Conference planned presentation of Proceedings Papers in a Poster Session, two Panel Sessions have been arranged. Transformers Committee members and participants are authors for papers in all three sessions. The Papers presently planned for this Conference include: Poster Session Papers:

• Interoperability between Non Conventional Instrument Transformers and Intelligent Electronic Devices

• Factors in Choosing Transformer Paralleling Methods • Measured Variability Of Performance Parameters • Accurate Solution of Ferroresonance for a Transformer interacting with Power

Line • Condition assessment of Instrument Transformer by Partial Discharge Analysis:

a Comprehensive Approach “Transformer Application Issues” Panel Session Papers:

• Surge Protective Properties Of Medium Voltage Underground Cable • Prediction of Transient Transfer Functions at Cable-Transformer Interfaces • Implementation of a Predictive Maintenance System • Simulation-Based 3D analysis for Performance Verification of Large Power

Transformers • The Field Test and Dissection of a New Type of Composite Insulated Dry Current

Transformer Made of Synthetic Materials “Progress Report on Natural Ester Fluids for Distribution and Power Transformers” Panel Session Papers:

• Tapchangers for De-energized Operation in Natural Ester Fluid, Mineral Oil, and Silicone

• Progress Report on Natural Esters for Distribution and Power Transformers • Some Considerations for New and Retrofil Applications of Natural Ester Dielectric

Fluids in Medium and Large Power Transformers • Design and Test Experience With Natural Ester Fluid For Power Transformers • Natural Ester Dielectric Fluid Development • Dielectric Properties of Natural Esters and their Influence on Transformer

Insulation System Design and Performance • Distribution Utility Experience with Natural Ester Coolants • Requirements and Expectations of Natural Ester Fluids for Application in Power

Transformers

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4.2.3 Technical Paper Session(s) at the 2006 General Meeting The Call for Papers for the 2006 General Meeting in Montreal (June 18-22, 2006) can be found on the PES web site (http://www.ieee.org/portal/site/pes/). The paper submission website is scheduled to be open to Authors on October 21, 2005, and the closing date for submittals of papers is December 15, 2005. 4.3 Committee Organization and Procedures Manual The Transformers Committee O&P Manual revision is behind schedule but is currently in process. 4.4 Power & Energy Magazine Submission The Transformers Committee is overdue in the schedule to contribute an article to Power & Energy magazine. The format and content is at the discretion of the Committee. The Vice Chair will be looking for volunteer authors and coordinating a submittal to the P&E magazine prior to our next meeting. Respectfully submitted, D. J. Fallon, Vice Chair 5.0 Transformer Standards Standards Activities Since the March, 2005 Meeting TRANSFORMERS STANDARDS STATUS The transformers standards status is shown in the attachment entitled IEEE/PES Transformers Committee Status Report of Standards, Dated 10/14/2005. The report is a list of all the transformer related standards under the sponsorship of IEEE Power Engineering Society Transformers Committee (IEEE PE/TR). The standards are grouped by Subcommittees and sorted by document numbers. The report also contains the active PARs under the responsible Subcommittee. The standards that are not yet assigned to a subcommittee are temporarily listed under the Standards Subcommittee. IEEE/IEC DUAL LOGO STANDARDS C57.135-2001 � IEEE Guide for the Application, Specification, and Testing of Phase-Shifting Transformers Approved by the IEC TC 14 as of December, 2004. The corresponding IEC document number is: IEC 62032 Ed. 1: Guide for the Application, Specification, and Testing of Phase-Shifting Transformers (IEEE Std. C57.135-2001) There were no additional IEEE/IEC dual logo standards approved during this period. The next standard targeted for the IEEE/IEC dual logo approval process is: C57.123 � IEEE Guide for Transformer Loss Measurement

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DOCUMENTS PROCESSED BY THE IEEE STANDARDS BOARD The following sections list all of the documents submitted to the New Standards Committee (NesCom) and the Standards Review Committee (RevCom) of the Standards Board since the February, 2005. NEW STANDARDS COMMITTEE (NesCom) EXISTING PARS � EXTENSTION & MODIFICATION No Extension or Modification PARs were submitted during this period. NEW PARS - REVISIONS OF EXISTING STANDARDS PC57.12.23 (PE/TR) Standard for Submersible Single-Phase Transformers; 167kVA and Smaller; High-Voltage 25 000 Volts and Below; Low Voltage 600 Volts and Below Recommendation: Approve PAR for the revision of a standard until December 2009. (2/22/05) PC57.12.35 (PE/TR) Standard for Bar Coding for Distribution Transformers and Step-Voltage Regulators Recommendation: Approve PAR for the revision of a standard until December 2009. (2/22/05) PC57.91 - Guide for Loading Liquid Immersed Transformers and Voltage Regulators Recommendation: Approve PAR for the revision of a standard until December 2009. (5/2/05) PC57.12.91a - Amendment to IEEE Standard Test Code for Dry-Type Distribution and Power Transformers Recommendation: Approve new PAR until December 2009, changing the title to �IEEE Standard Test Code for Dry-Type Distribution and Power Transformers � Amendment 1�. (6/8/05) PC57.15 - Standard Requirements, Terminology, and Test Code for Step-Voltage Regulators Recommendation: Approve new PAR until December 2009. (6/8/05) PC57.18.10a (PE/TR) Standard Practices and Requirements for Semiconductor Power Rectifier Transformers - Amendment 1: Technical and Editorial Corrections Recommendation: Approve new PAR until December 2009. (2/22/05) NEW PARS - NEW STANDARDS PC57.133 (PE/TR) Guide for Short-Circuit Testing of Distribution and Power Transformers Recommendation: Approve new PAR until December 2009. (2/22/05) PC57.12.34 - Requirements for Pad-Mounted, Compartmental Type, Self Cooled; Three Phase Distribution Transformers, 5 MVA and Smaller; High Voltage, 34.5kV Nominal System Voltage and Below; Low Voltage, 15kv Nominal System Voltage and Below Recommendation: Approve PAR for the revision of a standard until December 2009. (3/19/2005)

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PC57.12.38 - Standard for Padmounted Type, Self-Cooled, Single Phase Distribution Transformers; High Voltage, 34500 GrdY/19920 Volts and below, Low voltage, 480 Volts and below; 167 KVA and smaller Recommendation: Approve new PAR until December 2009. (8/1/05) ADMINISTRATIVELY WITHDRAWN PARS No PARS were administratively withdrawn during this period. STANDARDS REVIEW COMMITTEE (RevCom) NEW & REVISED STANDARDS PC57.12.20/D10c (PE/TR) Standard for Overhead Type Distribution Transformers, 500 kVA and Smaller: High Voltage, 34 500 Volts and Below; Low Voltage, 7970/13 800Y Volts and Below Recommendation: APPROVE [Vote: Yes=11; No=0; Abstain=2 (Bruder, Engmann)] (6/8/05)

PC57.12.37/D11c (PE/TR) Standard for the Electronic Reporting of Distribution Transformer Test Data Recommendation: Disapprove because the Sponsor must conduct a recirculation ballot to address the new negative comments received on the D11c recirculation ballot. [Vote: Yes=12; No=0; Abstain=2 (Engmann, Watson)] (6/8/05)

PC57.13.2/D4 (PE/TR) Standard Conformance Test Procedure for Instrument Transformers Recommendation: APPROVE [Vote: Yes=12; No=0; Abstain=2 (Engmann, Mehravari)] (6/8/05)

PC57.13.6/D3 (PE/TR) Standard for High Accuracy Instrument Transformers Recommendation: APPROVE (9/21/05)

PC57.146/D3a (PE/TR) Guide for the Interpretation of Gases Generated in Silicone-Immersed Transformers Recommendation: APPROVE (9/21/05) REAFFIRMATION 62-1995 (PE/TR) IEEE Guide for Diagnostic Field Testing of Electric Power Apparatus - Part 1: Oil Filled Power Transformers, Regulators, and Reactors Recommendation: APPROVE (3/19/05) C57.138-1998 (PE/TR) IEEE Recommended Practice for Routine Impulse Test for Distribution Transformers Recommendation: APPROVE (6/8/05)

C57.136-2000 (PE/TR) IEEE Guide for Sound Level Abatement and Determination for Liquid-Immersed Power Transformers and Shunt Reactors Rated Over 500 kVA Recommendation: APPROVE [Vote: Yes=9; No=0; Abstain=1 (Engmann)] (9/21/05) 5-YEAR REVIEW 638-1992 (R1999) IEEE Standard for Qualification of Class 1E Transformers for Nuclear Power Generating Stations Sponsor requests an extension to determine whether to revise or reaffirm the standard. Recommendation (From December 2004): Extend until March 2005.

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Sponsor states that a reaffirmation ballot will be initiated. Recommendation: Extend until December 2005.

C57.105-1978 (R1999) IEEE Guide for Application of Transformer Connections in Three-Phase Distribution Systems Sponsor requests an extension to determine whether to revise or reaffirm the standard. Recommendation (From December 2004): Extend until March 2005. Sponsor states that a reaffirmation ballot will be initiated. Recommendation: Extend until December 2005.

C57.117-1986 (R1998) IEEE Guide for Reporting Failure Data for Power Transformers and Shunt Reactors on Electric Utility Power Systems Sponsor requests an extension to determine whether to revise or reaffirm the standard. Recommendation (From December 2004): Extend until March 2005. Reaffirmation submitted to RevCom in late February 2005. Recommendation: Extend until December 2005.

C57.125-1991 (R1998) IEEE Guide for Failure Investigation, Documentation, and Analysis for Power Transformers and Shunt Reactors Sponsor requests an extension to determine whether to revise or reaffirm the standard. Recommendation (From December 2004): Extend until March 2005. Reaffirmation submitted to RevCom in late February 2005. Recommendation: Extend until December 2005. PARS DUE TO EXPIRE AT THE END OF 2005

PC57.12.00 IEEE Standard General Requirements For Liquid-Immersed Distribution, Power, and Regulating Transformers (Recirculation of D3 in process)

PC57.12.01 IEEE Standard General Requirements for Dry-Type Distribution and Power Transformers Including Those with Solid Cast and/or Resin Encapsulated Windings (RevCom Submittal in progress)

PC57.12.20 Standard for Overhead Type Distribution Transformers, 500 kVA and Smaller, High-Voltage 34 500 Volts and Below; Low-Voltage, 7970/13 800 Y Volts and Below (No action needed. D11c approved by RevCom � pending publication)

PC57.12.37 Standard for the Electronic Reporting of Distribution Transformer Test Data (Final recirculation and RevCom submittal in progress)

PC57.12.40 Requirements for Secondary Network Transformers, Subway and Vault Types (Liquid-Immersed) (Final recirculation and RevCom submittal in progress)

PC57.12.90 IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers (Recirculation of D3 in process)

PC57.104 IEEE Guide for the Interpretation of Gases Generated in Oil-Immersed Transformers (Final recirculation in progress. RevCom submittal in progress)

PC57.130 IEEE Trial-Use Guide for the Use of Dissolved Gas Analysis During Factory Temeprature Rise Tests for the Evaluation of Oil-Immersed Transformers and Reactors (Seeking PAR extension)

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PC57.140 Evaluation and Reconditioning of Liquid Immersed Power Transformers (D14 Ballot in progress, PAR extension request submitted)

PC57.145 Guide for the Definition of Thermal Duplicate Liquid-Immersed Distribution, Power, and Regulating Transformers

If there is no response by 17 October 2005, the projects will be recommended for administrative withdrawn at the December 6, 2005 IEEE-SA Standards Board meeting. STANDARDS DUE TO EXPIRE AT THE END OF 2005

IEEE 638 IEEE Standard for Qualification of Class 1E Transformers for Nuclear Power Generating Stations (Reaffirmation ballot in progress)

IEEE 1276 IEEE Guide for the Application of High-Temperature Insulation Materials in Liquid-Immersed Power Transformers (Reaffirmation conducted in 2002/2004, pending RevCom submittal by 10/17/2005)

IEEE 1277 IEEE General Requirements and Test Code for Dry-Type and Oil-Immersed Smoothing Reactors for DC Power Transmission (PAR for Revision requested)

IEEE 1388 IEEE Standard for the Electronic Reporting of Transformer Test Data (Replaced with PC57.12.37)

IEEE 1538 IEEE Guide for Determination of Maximum Winding Temperature Rise in Liquid Filled Transformer (Reaffirmation in progress)

C57.12.00 IEEE Standard General Requirements For Liquid-Immersed Distribution, Power, and Regulating Transformers (D3 recirculation in progress)

C57.12.01 IEEE Standard General Requirements for Dry-Type Distribution and Power Transformers Including Those with Solid Cast and/or Resin Encapsulated Windings (RevCom Submittal in progress)

C57.12.20 Standard for Overhead Type Distribution Transformers, 500 kVA and Smaller, High-Voltage 34 500 Volts and Below; Low-Voltage, 7970/13 800 Y Volts and Below (No action needed. D11c approved by RevCom � pending publication)

C57.12.40 Standard for Requirements for Secondary Network Transformers - Subway and Vault Types (Liquid Immersed) (Final recirculation and RevCom submittal in progress)

C57.12.70 IEEE Standard Terminal Markings and Connections for Distribution and Power Transformers (Reaffirmation in progress)

C57.12.90 IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers (D3 recirculation in progress)

C57.19.01 IEEE Standard Performance Characteristics and Dimensions for Outdoor Apparatus Bushings (RevCom packaged submitted)

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C57.94 IEEE Recommended Practice for Installation, Application, Operation, and Maintenance of Dry-Type General Purpose Distribution and Power Transformers (Reaffirmation in progress)

C57.104 IEEE Guide for the Interpretation of Gases Generated in Oil-Immersed Transformers (Final recirculation in progress. RevCom submittal in progress)

C57.105 IEEE Guide for Application of Transformer Connections in Three-Phase Distribution Systems (Reaffirmation in progress)

C57.109 IEEE Guide for Liquid-Immersed Transformers Through-Fault-Current Duration (Reaffirmation in progress)

C57.116 IEEE Guide for Transformers Directly Connected to Generators (Reaffirmation in progress)

C57.117 IEEE Guide for Reporting Failure Data for Power Transformers and Shunt Reactors on Electric Utility Power Systems

C57.120 IEEE Loss Evaluation Guide for Power Transformers and Reactors

C57.121 IEEE Guide for Acceptance and Maintenance of Less-Flammable Hydrocarbon Fluid in Transformers

C57.127 IEEE Guide for the Detection of Acoustic Emissions from Partial Discharges in Oil-Immersed Power Transformers (Active PAR for Revision in progress)

C57.134 IEEE Guide for Determination of Hottest Spot Temperature in Dry Type Transformers (Reaffirmation in progress) NEW myBallot INVITAION TO BALLOT STATUS � 2005, SORTED BY INVITATION NUMBER (As of 10/9/2005)

Draft # -- <Filename> Stage

Ballot Designe

e Invitation

Start Invitation

Close Pool Size

Response Count

Standard --<1276-19971.pdf> Invitation 10/6/2005 11/5/2005 404 42

Standard --<C57.105-19781.pdf> Invitation 10/6/2005 11/5/2005 404 62


Standard --<C57.12.70-20001.pdf> Invitation 10/6/2005 11/5/2005 404 57




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EXISTING ELECTRONIC BALLOT STATUS � 2005, SORTED BY BALLOT NUMBER (As of 8/2/2005)

Balloting Results

Ballot Number Sponsor

(Soc/Com) Type of Ballot

Ballot Opened

Sched. Close Date

# Ballots Affirm Neg Abstain

Type of Ballot

PC57.12.28/D2.0 PE/TR Recirc 28-Dec-04 27-Jan-05 79 100% 0 1% ElectronicPC57.12.29/D1.5 PE/TR Recirc 28-Dec-04 27-Jan-05 70 100% 0 1% ElectronicPC57.12.40/D2 PE/TR Revision 28-Dec-04 27-Jan-05 71 98% 2% 1% ElectronicPC57.13.2/D4 PE/TR Recirc 5-Jan-05 4-Feb-05 70 98% 2% 3% ElectronicPC57.13.6/D3 PE/TR Recirc 13-Jan-05 12-Feb-05 82 97% 3% 5% ElectronicPC57.12.20/10c PE/TR Recirc 19-Jan-05 18-Feb-05 81 97% 3% 3% ElectronicPC57.12.44/D2 PE/TR Recirc 2-Feb-05 4-Mar-05 53 95% 4% 1% ElectronicPC57.146/3a PE/TR Recirc 31-Mar-05 10-Apr-05 72 98% 2% 4% Electronic

NEW myBallot BALLOT STATUS � 2005, SORTED BY INVITATION NUMBER (As of 10/9/2005)

PAR or # of Response Approval Abstain

Standard # Stage

Ballot Open Date

Ballot Close Date Balloters Rate % Rate % Rate %

# Comments

1538-2000 Comment Resolution 8/18/2005 9/17/2005 100 76.0% 98.7% 1.3% 14

638-1992 Comment Resolution 6/20/2005 9/15/2005 49 81.6% 89.5% 5.0% 16

C57.116-1989 Comment Resolution 8/19/2005 10/4/2005 124 75.8% 98.9% 3.2% 33



C57.19.01-2000 Recirculation Review 1 5/3/2005 6/4/2005 79 78.5% 93.4% 1.6% 5

PC57.12.01 Comment Resolution 2 9/26/2005 10/6/2005 129 84.5% 93.1% 5.5% 14

PC57.140 Ballot 9/12/2005 10/26/2005 157 33.1% / 66 100.0% 0.0% 13

PC57.142 Comment Resolution 8/9/2005 9/8/2005 145 79.3% 79.4% 5.2% 439

PC57.19.03-1996_Cor_1-20xx Recirculation 1 10/4/2005 10/14/2005 59 83.1% 100.0% 6.1% 0

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2006 STANDARDS BOARD MEETINGS SCHEDULE AND SUBMITTAL DEADLINES

Meeting Dates Deadline for Submittal of PAR (1) or Draft Standard (2)

March 29, 2006 February 17, 2006 June 7, 2006 April 28, 2006 September 15, 2006 August 4, 2006 December 5, 2006 October 16, 2006

1) A PAR must be sent to the Standards Subcommittee Chair before the stated deadline. 2) Standards must be submitted directly to the IEEE Standards Department by the Working Group Chair before the stated

deadline to be considered at the next Standards board Meeting. For current PAR form: http://standards.ieee.org/guides/par/index.html. Target Extension Request form: http://standards.ieee.org/guides/par/extension.html.

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CURRENT LIST OF ALL OPEN STANDARDS PROJECT (FROM IEEE Website 10/8/2005) http://standards.ieee.org/board/nes/C2-C136.html Only PARs submitted electronically and approved since the December 1998 Standards Board meeting are listed PC57.12.00 (PE/TR) Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers

PC57.12.01 (PE/TR) Standard General Requirements for Dry-Type Distribution and Power Transformers Including Those with Solid Cast and/or Resin Encapsulated Windings

PC57.12.10 (PE/TR) Standard Requirements for Liquid-Immersed Power Transformers

PC57.12.23 (PE/TR) Standard for Submersible Single-Phase Transformers; 167kVA and Smaller; High-Voltage 25 000 Volts and Below; Low Voltage 600 Volts and Below

PC57.12.28 (PE/TR) Standard for Pad Mounted Equipment - Enclosure Integrity

PC57.12.29 (PE/TR) Standard for Pad Mounted Equipment - Enclosure Integrity for Coastal Environments

PC57.12.34 (PE/TR) Requirements for Pad-Mounted, Compartmental Type, Self Cooled; Three Phase Distribution Transformers, 5 MVA and Smaller; High Voltage, 34.5kV Nominal System Voltage and Below; Low Voltage, 15kv Nominal System Voltage and Below

PC57.12.35 (PE/TR) Standard for Bar Coding for Distribution Transformers and Step-Voltage Regulators

PC57.12.36 (PE/TR) Standard Requirements for Liquid-Immersed Distribution Substation Transformers

PC57.12.37 (PE/TR) Standard for the Electronic Reporting of Distribution Transformer Test Data

PC57.12.38 (PE/TR) Standard for Padmounted Type, Self-Cooled, Single Phase Distribution Transformers; High Voltage, 34500 GrdY/19920 Volts and below, Low voltage, 480 Volts and below; 167 KVA and smaller

PC57.12.40 (PE/TR) Requirements for Secondary Network Transformers, Subway and Vault Types (Liquid-Immersed)

PC57.12.44 (PE/TR) Standard Requirements for Secondary Network Protectors

PC57.12.60 (PE/TR) Standard Test Procedure for Thermal Evaluation of Insulation Systems for Dry Type Power and Distribution Transformers, Including Ventilated, Solid-Cast and Resin Encapsulated Transformers

PC57.12.80 (PE/TR) Standard Terminology for Power and Distribution Transformers

PC57.12.90 (PE/TR) Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers

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PC57.12.91a (PE/TR) IEEE Standard Test Code for Dry-Type Distribution and Power Transformers � Amendment 1

PC57.13 (PE/TR) Standard Requirements for Instrument Transformers

PC57.13.1 (PE/PSR) Guide for Field Testing of Relaying Current Transformers

PC57.13.3 (PE/PSR) Guide for Grounding of Instrument Transformer Secondary Circuits and Cases

PC57.15 (PE/TR) Standard Requirements, Terminology, and Test Code for Step-Voltage Regulators

PC57.18.10a (PE/TR) Standard Practices and Requirements for Semiconductor Power Rectifier Transformers - Amendment 1: Technical and Editorial Corrections

PC57.19.03-1996/Cor 1-20xx (PE/TR) Standard Requirements, Terminology, and Test Code for Bushings for DC Applications - Corrigendum 1

PC57.21 (PE/TR) Standard Requirements, Terminology, and Test Code for Shunt Reactors Rated Over 500 kVA

PC57.32 (PE/TR) Standard Requirements, Terminology and Test Procedures for Neutral Grounding Devices

PC57.91 (PE/TR) Guide for Loading Liquid Immersed Transformers and Voltage Regulators

PC57.93 (PE/TR) Guide for Installation of Liquid-Immersed Power Transformers

PC57.98 (PE/TR) Guide for Transformer Impulse Tests

PC57.100 (PE/TR) Standard Test Procedure for Thermal Evaluation of Insulation Systems for Liquid-Immersed Distribution and Power Transformers

PC57.104 (PE/TR) Guide for the Interpretation of Gases Generated in Oil-Immersed Transformers

PC57.106 (PE/TR) Guide for Acceptance and Maintenance of Insulating Oil in Equipment

PC57.110 (PE/TR) Recommended Practice for Establishing Liquid-Filled and Dry-Type Power and Distribution Transformer Capability When Supplying Nonsinusoidal Load Currents

PC57.119 (PE/TR) Recommended Practice for Performing Temperature Rise Tests on Oil Immersed Power Transformers at Loads Beyond Nameplate Rating

PC57.127 (PE/TR) Guide for the Detection and Location of Acoustic Emissions from Partial Discharges in Oil-Immersed Power Transformers and Reactors

PC57.129 (PE/TR) Standard for General Requirements and Test Code for Oil-Immersed HVDC Converter Transformers

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PC57.130 (PE/TR) IEEE Trial-Use Guide for the Use of Dissolved Gas Analysis During Factory Temperature Rise Tests for the Evaluation of Oil-Immersed Transformers and Reactors

PC57.131 (PE/TR) Standard Requirements for Tap Changers

PC57.133 (PE/TR) Guide for Short-Circuit Testing of Distribution and Power Transformers

PC57.139 (PE/TR) Guide for Dissolved Gas Analysis in Transformer Load Tap Changers

PC57.140 (PE/TR) Evaluation and Reconditioning of Liquid Immersed Power Transformers

PC57.142 (PE/TR) A Guide To Describe The Occurrence And Mitigation Of Switching Transients Induced By Transformer-Breaker Interaction

PC57.143 (PE/TR) Guide for Application of Monitoring to Liquid-Immersed Transformers and Components

PC57.147 (PE/TR) Guide for Acceptance and Maintenance of Natural Ester Fluids in Transformers

PC57.148 (PE/TR) Standard for Control Cabinets for Power Transformers

PC57.149 (PE/TR) Guide for the Application and Interpretation of Frequency Response Analysis for Oil Immersed Transformers PC57.150 (PE/TR) Guide for the Transportation of Transformers and Reactors Rated 10,000 kVA or larger 6.0 Recognition and Awards – Chair H. Jin Sim 6.1 Certificates of Appreciation Certificates of Appreciation have been obtained for the following persons: Name Service Rendered Randy Williams Host, Fall 2005 Meeting, Memphis, TN Mark Perkins Certificate of Appreciation, Chair, Working Group on Revision

of Low Frequency Tests Bruce Forsyth Certificate of Appreciation, Chair, Working Group of the PCS

Revision of C57.12.90 Keith Ellis Certificate of Appreciation, Chair, WG of the Revision of

C57.19.00

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Steve Shull Certificate of Appreciation, Co-Chair, WG Completion of C57.12.34

Ron Stahara Certificate of Appreciation, Co-Chair, WG Completion of

C57.12.34 Subhash Tuli Certificate of Appreciation, Chair, WG Continuous Revision of

C57.12.00 Ken Hanus Certificate of Appreciation, Chair, Transformers Committee Harold Moore Distinguished Service Award 6.2 Nominations for IEEE, PES, and Technical Council Awards

None at this time. 6.3 Awards – General The following is a listing of various awards available. Detailed current information and nomination forms are available from the PES website. Anyone wishing to nominate our Committee members for these awards please contact the Chair of the Awards Subcommittee.

AWARD NOMINATION DEADLINE

NOMINATION SENT To

PES Prize Paper Award *** Mohammad Shahidehpour

PES Working Group Award (Technical Report)

*** Mohammad Shahidehpour

PES Working Group Award (Standard or Guide)

*** Mohammad Shahidehpour

�High Interest� Paper *** Noel Schulz

Alfred Nobel Intersociety Award *** Noel Schulz

Charles Concordia Power System Engineering Award

January 1 Richard G. Farmer

Cyril G. Veinott Electromechanical Energy Conversion Award

February 2 Steve Pekarek

Electrotechnology Transfer Award *** Sandra Kim

IEEE Herman Halperin Electric Transmission and Distribution Award

*** IEEE Awards Activities

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IEEE Richard H. Kaufmann Award *** IEEE Awards Activities

IEEE Charles Proteus Steinmetz Award *** IEEE Awards Activities

IEEE Nikola Tesla Award *** IEEE Awards Activities

Uno Lamm HVDC Award *** Prof. Willis Long

Walter Fee Outstanding Young Engineer Award

February 15 Prof. Thomas J. Overbye

Technical Committee Prize Paper Award *** Noel Schulz

Technical Committee Distinguished Service Award

*** Noel Schulz

Tech. Com. Working Group Recognition Award

*** Noel Schulz

IEEE Prize Paper Award (W.R.G. Baker) April 1 Mohammad Shahidehpour

IEEE Prize Paper Award (Donald G. Fink) April 1 Mohammad Shahidehpour

IEEE Prize Paper Award (Browder J. Thompson)

April 1 Mohammad Shahidehpour

*** Will be decided later. Most of these are annual awards and we can submit the nominations throughout the year. H. Jin Sim, Chair Awards Subcommittee 7.0 Report of Technical Subcommittees 7.1 HVDC Converter Transformers & Reactors Subcommittee – R.F. Dudley

MINUTES OF THE MEETING OF THE HVDC CONVERTER TRANSFORMERS &

SMOOTHING REACTORS S.C. IN MEMPHIS, TENNESSEE, OCT. 24, 2005

The S.C. met in the Venetian Room of the Peabody Hotel in Memphis, Tennessee on Oct. 24, 2005 from 1:45 p.m. to 3:00 p.m. There were 10 members and 7 guests present. The following are the highlights of the meeting. 1. The minutes of the S.C. meeting in Jackson were approved. The minutes of the

Memphis meeting will not be approved until the S.C. meets in Costa Mesa, California.

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2. IEEE patent policy was reviewed; details are available on the Transformers

Committee website. No patents affecting the revision process of IEEE C57.129 were noted.

3. The Chairman reported on the meeting of the Administrative S.C. 4. The Chairman informed the S.C. that an application for a PAR to revise IEEE

1277 (smoothing reactors for HVDC application) had been submitted. Questions were raised by 2 members of NesCom re the �scope� and �purpose�. The Chairman modified the �scope� and �purpose� to attempt to satisfy the comments from the NesCom members but had reservations; existing �scope� and �purpose� (declared in abstract) was approved in 2001 by NesCom and seemed adequate. What will be the potential impact of NesCom�s current position on other Transformers Committee documents when a PAR is submitted for revision? The issue was discussed at the Administrative S.C. meeting.

5. Plans are in process for the S.C., in co-ordination with the Audible Sound S.C.

and the Performance Characteristics S.C., to sponsor or co-sponsor a tutorial on sound at the Costa Mesa meeting. Reactors and transformers utilized in HVDC will be included; converter transformers, smoothing reactors (oil-immersed and dry type) and filter reactors (dry-type).

6. Draft #4 of the revision of IEEE C57.129, prepared by RFD based on inputs from

various S.C. members was discussed. The highlights are as follows. (i) Some members did not receive D#4; attachment to an e-mail. The

Chairman will resend the e-mail. (ii) Comments submitted by Lars-Erik Juhlin were discussed and accepted.

In most HVDC projects the converter transformer valve side d.c. bushings extend into the valve hall with resultant considerations. The Chairman will incorporate LEJ�s comments into D#5.

(iii) The issue of measurement of commutation reactance was raised by a

number of S.C. members. Although the measurement/determination of commutation reactance is important from an HVDC system point of view the S.C. felt that it was not appropriate to include such methodology in IEEE C57.129. Converter transformer leakage reactance is one component of commutation reactance. It was proposed to add the following note, �Commutation reactance is important from an HVDC systems perspective. Converter transformer leakage reactance is only one component of the commutation reactance. Therefore measurement/ determination of commutation reactance is not within the scope of this equipment standard.�

(iv) The issue of Cu S2 in transformer oils was discussed. Corrosion and

deposition of Cu S2 is a general problem that can affect all transformers. Per Pierre Riffon this problem was first identified in 1995. Pierre has a very recent CIGRE presentation on the subject that he can make available to S.C. members for standards development work. Per one guest at the S.C. meeting the refining process is probably more important

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than the sulphur content of the crude oil. The consensus is that this issue should not be part of an equipment standard. This issue may be something that the Insulating Fluids S.C. should consider addressing. (Frank Gryszkiewicz).

(v) Table 1 in Annex D covering dissolved gas rate of rise limits during the

overload heat run test was discussed. The limit for CH4 should be changed to <.4 ppm/hr. vs <.1 ppm/hr.). Maximum total values for C2H6 and C2H4 should be specified vs rate of rise limits. A third column will be added to the table covering maximum total values where applicable. These values are important as more total gas will be evolved during the overload test than during a standard temperature rise test. Note 3 will be modified: �The total amount of C2H2 shall be ≤ .1 ppm after all tests. Pierre Riffon, Peter Heinzig and Christoph Ploetner will revise Table 1 and the NOTES; including consideration of Waldemar Ziomek�s input. (Waldemar Ziomek will be contacted by e-mail).

(vi) Les Rickseidler�s e-mail with his comments to D#4 will be circulated to

S.C. members in order to obtain feedback. The Chairman will produce Draft #5 prior to the Costa Mesa meeting.

The meeting adjourned at 3:00 p.m. R. Dudley 7.2 C57.13 Instrument Transformers – J. Smith - Unapproved Minutes

The Subcommittee met on Oct 26. 9 members and 8 guests attended

7.2.1 Chair’s Remarks & Announcements: The Chair announced that the next meeting would be in Costa Mesa, California at the Hilton Costa Mesa on March 19 � 23, 2006 He then asked the attendees if they were aware of any patent issues as required by the new IEEE policy. There were none. P. Riffon asked specifically about optical IT issues and J. Smith confirmed that there were none. The previous meeting minutes were approved as written The minutes of this meeting are to be submitted by Dec 20 7.2.2 Working Group Reports: 7.2.2.1.1 WG C57.13.5 - Working Group on Test Requirements for High Voltage

Instrument Transformers 115 kV Nominal System Voltage and above

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The WG met on October 25, 2005. Six members and eight guests attended the meeting. Two guests requested membership. The meeting was co-chaired by Mr. P. Riffon and Mr. R. McTaggart.

The agenda was approved as written.

Minutes of the Jackson meeting were approved as written.

The IEEE patent disclosure requirement policy was discussed. None of the members and guests present during the meeting were aware of any patents related to the work of the WG.

The Trial-Use Standard C57.13.5 has been published by IEEE in August 2003. One feedback has been received on the use of C57.13.5. This feedback came from Joe Ma and concerns the measurement of leakage impedance of current transformers. This subject has been discussed under "old business".

Three surveys have been circulated since the Jackson meeting. The surveys were sent in May 2005 and were related to:

- Annex H concerning current transformers used as unbalance current protection of capacitor banks;

- Clause 4.5 on temperature rise of terminals;

- Annex I on current transformers having transient performance.

The number of returned surveys was somewhat low (approximately 30% returned). All surveys were 100% approved. No negative surveys were received. Comments received were discussed and the observations made by the chairmen were agreed upon. The majority of comments received were mainly editorial. The technical comments were mainly clarifications to the existing text.

The three documents will be updated according to the comment received and new revisions will be circulated within the WG membership for comments. These three documents will be inserted into the next revision of C57.13.5 for ballot.

A PAR application has been made to IEEE and its formal approval is expected somewhere in December 2005. The deadline has been fixed to December 2008 and the ballot is expected to be held in September 2007.

The chairman will prepare a complete revised draft edition of C57.13.5 for discussion during the upcoming WG meetings.

On the New Business, Vladimir Khalin pointed out that new amendments to IEC 60044-1 and 60044-2 are under discussion. He will send copies of the IEC working documents to

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the WG membership for possible harmonization with IEEE C57.13.5. These amendments will be discussed during upcoming WG meetings.

On old business, the Joe Ma's feedback has been discussed. His comment concerns the difficulty of measuring the leakage inductance of current transformers for units having multiple core designs. He did propose an alternative test methodology. The presence of adjacent cores does affect the leakage impedance measurement. This measurement has been requested to demonstrate that the secondary windings are uniformly distributed. After discussion, it has been decided to delete this test and this requirement since they are not required by any other national or international standards. WG membership did agree that the most important aspect is the accuracy performance and this is fully addressed by the accuracy tests.

7.2.2.1.2 Working Group on C57.13 Revision – Tom Nelson

The Working Group met on October 25, 2005. The chairman, Tom Nelson, was absent and Jim Smith chaired the meeting in his absence. There were 7 members and 4 guests at the meeting. The patent disclosure was reviewed. The Working Group reviewed the IEC Standard 60270-2000 on the test equipment calibration and requested that the C57.13 Subcommittee Chair obtain a copy of the latest revision of C57.113 for the Working Group to review and determine if C57.113 or IEC 60270 should be used as the reference partial discharge standard for instrument transformers.

7.2.2.1.3 Joint PSIM/Transformer Working Group - PAR P1601 Optical Current

and Voltage Sensing Systems Session chaired by: F. Rahmatian (TC/ITSC) Attendees: J. Smith, P. Millward, R. McTaggart, L. Davis, C. Burns, V. Khalin, R. Rensi, C. Tenhaagen, V. Nguyen, A. Cancino, B. Henning, M. Foster, U. Radbrandt. Minutes (Unapproved)

• IEEE disclosure requirements regarding patent issues related to the WG work were

presented o Mr. Rahmatian asked if anyone is aware of patents relating to the content

of PAR 1601 work. There were no responses. It was noted that no patent or IP was disclosed or identified as relevant to P1601 work.

• Minutes of meeting #10 of P1601 at Transformers Committee meeting, March 14, 2005, Jackson, were reviewed and approved.

• Notes from meeting #11 of P1601 at IEEE/PES GM, June 2005 were presented. • PAR status and timetable were reviewed

o Has Applied for PAR extension to 2008 o Balloting to start in Dec 2007 or sooner

• Text of a preliminary draft was reviewed and discussed. • Decisions/actions:

o Include a reference to mechanical test levels in IEC 60044 series. o An updated draft to be posted on TC web site by Nov. 24, 2005. o Reminder to be emailed for review by Dec. 15, 2005 o Survey results due by Dec 20, 2005.

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o A revised draft (based on survey comments) to be issued by mid February 2006, for discussion during March meeting.

• Next Scheduled Working Group Meeting ! IEEE/PES Transformers Committee Meeting, March 19-23, 2006, Costa

Mesa, CA. 7.2.3 Old Business

Discussion on PD � continued from C57.13 Revision meeting

• There was further discussion about whether it was appropriate to refer to the IEC standard when an IEEE Standard exists, albeit for Power Transformers. Jim Smith agreed to contact the C57.113 WG Chair to see whether Instrument Transformers could possibly be included in that Standard.

7.2.4 New Business

Discussion of C Ballantine�s proposal for CT Open-ckt Voltage • Some parts of the calculation for open-ckt voltage were called into

question and it was agreed not to include the formulae in the Standard. It was also pointed out by Jim Smith that the main reason for concern when the voltage exceeds 3500 V peak is that it exceeds the test voltage of 2500 V RMS

7.3 Insulating Fluids Subcommittee – F. J. Gryszkiewicz, Chair; R.K. Ladroga,

Vice-Chair 7.3.1 Introduction/Attendance The Insulating Fluids Subcommittee met in Memphis, Tennessee on Wednesday, October 26, 2005 with 23 members and 27 guests present. 7.3.2 Approval of Meeting Minutes

The Minutes of the Jackson, Mississippi meeting were approved as written. 7.3.3 Subcommittee Membership

There were no changes to report in the Subcommittee Roster. Current Subcommittee Business

C57.106 � IEEE Guide for Acceptance and Maintenance of Insulating Oil in Equipment

The Working Group for the revision of the IEEE Guide for Acceptance and Maintenance of Insulating Oil in Equipment (or IEEEC57.106) met at Memphis, Tennessee on Tuesday October 25, 2005. There were 4 members and 34 guests. A request for any patent disclosures received no response. After review of the draft minutes of the previous meeting on March 15, 2005 - a motion was made and seconded to approve those minutes. The approval was unanimous. Then the previously suggested changes to draft 4 were presented as draft 5. A copy of draft 5 was presented in Power Point and hard copy and there were no objections, changes or comments. It was announced by

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the Chair that this was the last PC57.106 Working Group meeting and that the entire revision document for draft 5 has been sent to IEEE headquarters for editorial review and that balloting should start in 30 days. The Chair and all members and guests gave a thank you to TV Oommen for his assistance and expertise on the technical issues regarding moisture diffusion in transformer materials.

Respectfully submitted,

Jim Thompson, Chair PC57.106 Working Group TV Oommen, Vice Chair PC57.106 Working Group

C57.104 – IEEE Guide for the Interpretation of Gases Generated in Oil – Immersed Transformers

A Standards Association Ballot was recently conducted on Draft 11D. Sixteen negative ballots were received. The Working Group previously had agreed to participate with IEEE Headquarters in an experimental procedure where negative ballots will be resolved or rebutted via a website based and teleconferencing procedure. A ballot resolution team was set up to begin work on the resolution process. This team consisted of Joe Kelly, Sue McNelly, Tom Prevost, and Richard Ladroga.

The group addressed the negative ballots and presented their resolution(s) to the IEEE staff present at the Memphis meetings. Upon a review of the negative ballots and outstanding issues, the IEEE advised the ballot resolution team, Insulating Fluids Subcommittee, and IEEE PES Transformers Committee Chair, Vice-Chair, and Secretary that the Guide and its resolutions would not pass through REVCOM.

The C57.104 Guide was last approved in 1991. The new PAR was applied for and received in 1996. The Working Group did not complete the revision to the Guide by 2000, and an extension was sought and received at that time. Additional extensions were applied for and granted in 2002 and 2004. The group discussed the lengthy period that this Guide has been in a revision status without receiving approval, and noted that another extension would be difficult to secure. The group felt that another extension would not be a viable solution to complete the Guide, resolve the outstanding issues, and achieve a successful ballot.

Therefore the group decided to take the following action, with the understanding and approval of IEEE representatives Angela Ortiz and Jodi Haasz:

Allow the current PAR for C57.104 to expire at the end of December 2005.

Apply for a new PAR using the same title and C57.104 designation. Tom Prevost and Richard Ladroga agreed to complete the application and submit it to the IEEE. Richard Ladroga volunteered to Chair the new Working Group.

Allow the current Guide, namely C57.104 � 1991 to expire. This action is being undertaken as a result of discussion among the group. The 1991 Guide is no longer considered valid, and should consequently be removed from circulation as a valid Guide. The group, the Transformers Committee leadership, and the IEEE representatives also felt that this action would serve to draw attention to this vital document, and help to rally interest and a strong effort to complete a new Guide as soon as possible.

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A new Working Group will form, and the new Chair will work to prepare the new Guide draft for review at the next meeting in Costa Mesa.

Respectfully Submitted Richard K. Ladroga October 28, 2005

C57.130 – Trial Use Guide for the Use of Dissolved Gas Analysis During Factory Temperature Rise Tests for the Evaluation of Oil- Immersed Transformers and Reactors

There is nothing new to report on this guide.

C57.139 – IEEE Guide for Dissolved Gas Analysis of Load Tap Changers

The meeting was called to order by Fredi Jakob at 8:05 am, Tuesday, October 25, 2005. There were 17 members and 24 guests present with 4 guests requesting membership.

Guests requesting membership were:

Tim Reynolds Shuzhen Xu Alan Padgett Don Angell

The IEEE Patent disclosure requirements were discussed and a request was made for disclosure of any patents that may be related to the work of the WG. There were no responses to the request for disclosure.

Agenda:

1. LTC Types, let by Mr. Dave Wallach, Duke Energy 2. A review of the type document prepared by the sub-committee. 3. Paragraph by paragraph review of draft 8 4. Setting goals for the Spring 2006 meeting

Approval of minutes from the March meeting was requested. A motion was received and the minutes were approved.

Agenda Items 1 & 2:

Dave Wallach discussed the LTC Type table that he provided as a proposed table for the standard. Dave opened the table up for discussion. The committee will have to have a �cheat sheet� to initially populate the data that would have LTC types listed. This would not be put in the standard, but would be used to develop the generic table to assure that the LTC types are appropriately matched into the generic table.

Fredi requested volunteers to help start populating the table. Tim Raymond indicated that he has a partial list that he can provide.

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There was discussion regarding whether there are enough breakdowns in the type table to cover both reactive and resistive LTCs. The data will be collected with the reactive and resistive types identified. Once the table is populated, then we can look at the ratios for these units to see if they can be combined into one category or if they will have to be left as separate categories.

David provided histograms of data he has collected for different LTC ratio distributions. A comment was made that wasn�t that what we were going to do with the data we collect? Take the data and develop histograms or norms to help us determine how to group the LTC types and expected ratios.

Fredi will remind George Forrest that he would put together a database query. This would then be sent out for a more uniform collection of data.

Paul Bowman from Hartford volunteered to provide some data.

Data fields that are needed are as follows:

• Gases (CO, CO2, Hydrogen, Methane, Ethane, Ethylene, and Acetylene) • Sample dates • Manufacturer, type, model #, and year • Classification of the LTC per the WG LTC Type table. • Operation count at each sample date • Breathing configuration (free breathing or sealed) • On line filters? If filtered when filter was installed and changed • Date LTC installed • Problem investigated • Compartment origin of sample

Agenda Item 3:

Fredi asked for a consensus on how to proceed to try and make the work on this as efficient as possible. Do we want to proceed in the meeting on a paragraph-by-paragraph review or do an offline collaboration of review and updates?

Comments that a smaller group effort would probably be the best option and then put that forth for comment and review by the WG.

The original document was started by Rick Youngblood, and needs more input into further development.

Volunteers to help with this are Rowland James, Bengt-Olof Stenstam, Jim Gardner, and Tim Raymond.

Reviewed the document outline and asked for comment on whether there were any obvious omissions that should be added.

Fredi asked for any volunteers that have before and after filtration data. Tommy Spitzer indicated that they have not seen any difference in the ratios of their LTCs before or after using on-line filtration. Jim Gardner and Tommy Spitzer will provide some data of their findings. Comment that whether the unit was a free breather or sealed unit should be identified.

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Question was asked on whether particle count and size distribution would be included. Fredi commented that this document will primarily deal with DGA, but should mention that these other methods of diagnostics are available.

Fredi indicated that we would have a Draft 9 available for the next meeting

The meeting was adjourned at 9:08 am.

Fredi Jakob Chair

C57.146 – IEEE Guide for the Interpretation of Gases Generated in Silicone

Immersed Transformers

This document previously carried the IEEE designation P1258. This has been changed to the IEEE designation C57.146 to be consistent with the other standards in the C57 collection.

Jim Goudie and Bill Bartley are the Working Group Co-Chairs of this project. The Standards Association Ballot was conducted with a favorable outcome, and the Standard Board approved the Guide on September 21, 2005.

C57.147 – IEEE Guide for the Acceptance and Maintenance of Natural Ester Based Fluids

Tuesday, October 25, 2005 Memphis, TN

Minutes of WG Meeting

The WG meeting was called to order at 9:30 am, on Tuesday, October 25, 2005 by the working group Chair, Patrick McShane. Vice Chair, Clair Claiborne and Secretary, Susan McNelly were also present. There were 18 members present and 56 guests, with 7 guests requesting membership. Guests requesting membership include:

Thomas Callsen Dan Morgan Joseph Cultrera Roberto Asano, Jr. John Lackey Saurabh Ghosh Bill Griesacker

As required in IEEE SA Standard Boards by-law, Section 6.3.2, the IEEE patent disclosure requirements were discussed and a request was made for disclosure of any patents that may be related to the work of the WG. No new disclosures were forthcoming.

The minutes for the Spring 2005 meeting were approved as submitted and recorded on the website.

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A special recognition was paid to Ms. Susan McNelly for service above and beyond the call of duty despite her recent adversity and injury.

Draft 6 was issued for a straw vote to the working group and the subcommittee for comments. Several dozen technical and editorial comments were reviewed by the Task Force executive staff and were incorporated into a new Draft 7 which was issued just prior to this meeting and posted on the website.

The rest of the meeting consisted of review of certain points of this latest Draft 7, of the Guide. The following were discussed:

T. V. Oommen submitted that section 4.14 should address an issue that dealt with the concept that highly monosaturated oils with suitable antioxidants ought to be mentioned in the guide. His position is that only such oils have the oxidation stability to be satisfactory for continued use. Patrick McShane stated that no monitored field installed transformers with at least 9 years service have shown no sign of polymerization, and an experimental operating unit purposely free breathing and thermally cycled has shown only slight increase in viscosity over the last 8 years, indicating that this is not a significant issue.

Another attendee suggested the guide should describe why vegetable oils have a lower gassing tendency than mineral oils. T. V. Ooomen stated that the reason for this is that vegetable oils are typically unsaturated and thus can absorb hydrogen more readily. It was agreed to put typical ranges for the gassing tendency of vegetable oils in the text of the next draft, but not to specify these limits in the property tables.

The discussion of oxidative stability resumed briefly. A task force consisting of several members and guests was formed to attempt to resolve this issue:

Patrick McShane Jerry Murphy T. V. Oommen Gale Kennedy Bill Griesacker

Mr. McShane reviewed a change to Table 2 which was made to limit the moisture content to 400 ppm in tankers and 100 ppm in drums and totes. The rationale for this is that tankers are usually delivered and processed before installation into transformers while drums and totes are used without further processing and can be applied for all voltage classes. This change drew positive comments.

Mr. McShane also mentioned the inclusion of Appendix A3 which describes the Doble Power Factor Valued Oxidation test which is a alternative to measure oxidation stability which uses air rather than pure oxygen used in the ASTM methods. Lance Lewand advised that Doble Engineering would have no objections including the reference in this standard guide. Northern Iowa University biobased industrial products research division, ABIL, is also working on measuring relative oxidative stability of biobased hydraulic and lubricating oils and may be a resource in this area.

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When the comments on draft 7 are gathered by the end of this year and the work of the task force is completed, the next draft will be forwarded to IEEE by January 31, 2006 for the official ballot process.

Respectfully Submitted

Patrick McShane Working Group Chair October 25, 2005

Adjournment

The Subcommittee adjourned at 12:00 noon.

Next Meeting

The Insulating Fluids Subcommittee and its Working Groups will next meet in Costa Mesa, California during the period of March 19-23, 2006.

Submitted By Richard Ladroga November 3, 2005 7.4 Insulation Life Subcommittee – D.W. Platts

The Insulation Life Subcommittee met in Memphis, TN on October 26, 2005, at 8:00 AM. There were 36 members and 71 guests present, with 15 guests requesting membership in the subcommittee. The minutes of our meeting in Jackson, MS on March 16, 2005 were approved as submitted. 7.4.1 Chair’s Report A request was made for disclosure of any patents related to the work of the subcommittee. No patents were reported. The Chair reported that reaffirmation of two standards needs to be completed by the end of 2005. They are:

• IEEE 1276-1997, IEEE Guide for the Application of High-Temperature Insulation Materials in Liquid-Immersed Power Transformers � The negative ballots were withdrawn. This guide will be submitted to REVCOM this week.

• IEEE 1538, IEEE Guide For Determination Of Maximum Winding Temperature Rise In Liquid Filled Transformers � This guide was submitted to REVCOM last Monday. There was one negative ballot concerning changes to the tables. This issue will be addressed in the next revision.

The Chair also reported that the following standard needs to be dealt with by the end of 2006.

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• C57.119, Recommended Practice for Performing Temperature Rise Tests on Oil Immersed Power Transformers at Loads Beyond Nameplate Ratings � Everyone is asked to review this document and provide any comments to Don Platts. A volunteer for a chair is needed by the next meeting.

7.4.1.1 Project Status Reports Reaffirmation Ballot 1276-1997 IEEE Guide for the Application of High-Temperature Insulation Materials in Liquid-Immersed Power Transformers Don Platts reported that Mike Franchek had resolved the negative comments on this guide. The next step is submitting this guide to the Standards Committee and completing the necessary paperwork. 7.4.2 Working Group and Task Force Reports 7.4.2.1 Revision to C57.91 Loading Guide - Tim Raymond The WG meeting was called to order at 1:45 PM on Tuesday, October 25, 2005 by the working group Chair, Tim Raymond.

There were 23 members present and 48 guests with 6 guests requesting membership to the WG. Guests requesting membership were:

Jim Thompson Don Angell Joseph Cheung Miguel Medina David Barnard Pritpal Singh

The IEEE Patent disclosure requirements were discussed and a request was made for disclosure of any patents that may be related to the work of the WG. There were no responses to the request for disclosure.

Approval of minutes from the March meeting was requested. The minutes were approved.

Chair’s Comments:

New in Draft 4:

• Cleaned up the temperature calculations.

• Old Annex G calculations were moved into the main body of the standard.

• The old Clause 7 was moved into an Annex.

• Minor cleanup

Draft 4 will be posted to the website for review.

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PAR was approved last spring.

Last meeting:

• Discussed TV Oommen�s gas evolution model and agreed to keep it. Nick Abisamra and TV Oommen will review.

• Agreed to add wording to clarify issues with moisture content. (Glenn Swift)

Present Meeting:

Goal for this meeting is to produce a �feature list� of things to do.

Insulation Aging:

• One major point of confusion and misunderstanding when performing loading calculations and making loading decisions is the discussion of percent loss-of-life (in percent total life expectancy) and in the discussion of the end of life or life remaining.

• Aging equations fail to consider condition variables.

Would like to propose some minor modifications due to paper aging.

End of Life:

• In rough terms, the �end of life� for an insulation system is the point at which the insulation no longer performs reasonably.

• For electrical insulation, this means the point at which the insulation system no longer maintains a majority of its original dielectric strength.

• As insulation ages, the dielectric strength of the paper does not decrease significantly until well after the paper has become brittle.

• Therefore, the point at which the paper loses enough strength to withstand the mechanical forces is the practical end of life for the insulation system.

• Given this, a precise definition becomes difficult because this is dependant upon the application of the material, both electrically and mechanically.

Presented a Failure Rate vs. Age Curve and suggested that the end of normal service life is dictated by thermal aging.

Insulation Aging:

Current draft discusses age acceleration factor FAA. By integrating this over time, you get an equivalent aging hours. Equation for % loss of life is still there for those that wish to use it.

Asked if anyone has a strong opinion on whether the material for 55C-rise transformers in Annex A be moved into the body of the standard? Will the document

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still be readable or should there just be a reference to the Annex. Agreed to add a reference in the Aging and Loading of Power and Distribution transformers clauses (referring to temperature limits).

Life vs. temperature? TV Oommen asked if we can add a life curve. Tim indicated that you can have a plot with aging rate vs. temperature.

Joe Foldi indicated that we still need to come up with a finite expected life value. Don Platts indicated that we have been trying to include the requirement of the 180,000 hours in C57.12.00. C57.100 will outline how insulation values are tested or proven. We will let C57.12.00 set expected insulation life. For now, we will word it so that the user must select a value.

Affects of “condition”:

• We know that moisture content of the paper has a profound impact on the insulation aging rate (roughly, doubling the moisture doubles the aging rate).

• Aging tests done at roughly 0.5% moisture. Current equations are based on this.

• Oxygen also has a profound impact.

• Given that the format of the equations in the current guide, users are unaware of this. Adding rough factors to aging equations makes this difficult to miss.

If someone were to look at the loading guide and use the formulas, they would not be aware of the effect of moisture content and Oxygen have on the results. Tim indicated that he has added two multiplying factors to the age acceleration factor, moisture content and Oxygen content. For moisture content there would be multipliers for Dry, Moist, and Wet. For Oxygen content there would be a low and a high level. These are open to discussion and tweaking.

It is well known that insulation aging rates increase with the presence of increased moisture and oxygen. The original equations in the Loading Guide are based mostly upon sealed tube aging tests with moisture contents less than 0.5% and presumably lower oxygen contents. This does not reflect the reality of operating transformers and misleads the user on the actual aging rate. The importance of keeping transformers dry and oxygen free are not reflected in the guide and are best addressed by including quantitative estimates of the effects of moisture and oxygen in the aging equation. It is proposed that this be done by applying multiplying factors to the �Age Acceleration Factor� calculated as follows:

(1) ekk = F 273 +

B - 273 +

B OOHAA HSo ΘΘ22

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Where the factors are determined as follows: Moisture Content (roughly)

K_H2O

Dry (<0.5%) 1

Moist (0.5-2.5%) 2

Wet (>2.5%) 4+

Oxygen Content

K_O2

Low 1

High 3-5

The factors developed in the table were derived from data published by Emsley, Lundgaard and McNutt. They are approximations, however, insulation aging calculations as a whole are gross approximations. By applying these factors directly in the equation, users are well aware of the importance of moisture and oxygen, and are given a method for evaluating the impact of moisture and oxygen, as well as estimated life consumption for transformers with moisture contents in paper greater than 0.5% and with increased oxygen levels.

Joe Foldi asked what designates low and high for the Oxygen content. Tim agreed that Oxygen limits need to be identified and discussed. Comment that thermally upgraded paper makes a significant impact as well. Comment on whether the multiplying factors should be in the exponent or in front. This will need to be reviewed. (Note: Chair reviewed this following the meeting. The factor belongs in front of the equation, not in the exponent. Tim commented that the factors given apply to thermally upgraded paper as that is what is in the guide. Factors for standard kraft can also be developed. Tim asked for a show of hands on who would agree to include multiplying factors for moisture and Oxygen. Many in agreement, only three in disagreement on the issue.

Present Power Transformer Limits:

Would like to propose new limits for Moisture, Oxygen, Methane, Ethane, and Ethylene with three levels of Good, Moderate and Marginal. Which would then be used to create a condition based limit table for the top oil temperature, hottest spot conductor temperature, and short time loading limits.

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Good Moderate Marginal

Moisture < 0.5% 0.5%-1.5% > 1.5%

Oxygen < 3% TDG

3%-5% TDG > 5% TDG

Methane < 120ppm

120-400ppm > 400ppm

Ethane < 65ppm 65-100ppm > 100ppm

Ethylene <50ppm 50-100ppm >100ppm

Condition

Normal LTE (>4hrs)

STE (<4hrs)

Top Oil 95 105 110

Hot Spot

120 140 160

GOOD

LOL (hrs)

24 - -

Normal LTE (>4hrs)

STE (<4hrs)

Top Oil 95 105 105

Hot Spot

120 130 140

MODERATE

LOL (hrs)

24 - -

Normal LTE (>4hrs)

STE (<4hrs)

Top Oil 95 100 100

Hot Spot

110 120 120

MARGINAL

LOL (hrs)

24 - -

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There was quite a bit of discussion both pro and con to the proposed limits. Some were concerned with the implementation of this and that this may cause deratings based upon perceived condition.

Tim will attempt to take a cut at implementing this and then it can be further discussed.

Add Overload “Checklist”:

Example: • Gather Information

□ Factory Test Report □ Nameplate Drawing □ Outline Drawing (if available) □ Maintenance History

• Perform Field Inspection □ Check and calibrate gauges □ Check gaskets and seals □ Look for discolored paint □ Check pumps and fans for proper operation (and rotation if possible) □ Check oil level □ Inspect oil preservation system (N2 pressure, check bladder, oil level

gauge) □ Check alarm and trip levels on temperature, if equipped □ Check radiators or heat exchangers for blockage. Clean if necessary. □ Draw sample for DGA and oil quality

• Post Loading □ Draw sample for DGA and oil quality

Other Items for consideration:

• Cooling stage switching and impact on shorter duration overloads/ratings

• Three winding transformers?

• Enhanced sections on risks and increased maintenance considerations with higher or more frequent overloading (ie gaskets, DETC or LTC contacts, oil)

• Specs and the Loading Guide � Several members volunteered to send portions of their specs.

• Distribution transformers � Need at least two volunteers!

o Tom Holifield w/ Howard Industries volunteered

o Still looking for one more Meeting adjourned at approximately 3:00 pm. Tim Raymond, Chair 7.4.3 Working Group Revision C57.100 – Roger Wicks

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7.4.3.1 Introduction and Rosters The working group met on Monday, October 24, 2005 at 9:30 AM with 12 members and 36 guests attending. Five guests requested membership in the working group. 7.4.3.2 Approval of minutes from March 14, 2005 meeting The minutes of the March 14, 2005 meeting in Jackson were approved as written. 7.4.3.3 Patent Disclosure The chairman asked if anyone knew of any patents which could pertain to this project. There were none. 7.4.3.4 Discussion IEC � 62332 � Electrical Insulation Systems (EIS) Thermal Evaluation

of Combined Liquid and Solid Components The chair noted that this document has now been published as a final document. The chair then solicited input from the working group related to how one could get approval from IEC to allow us to use this document for a starting point in discussion related to model testing. Don Platts agreed to help make this contact. Likely contact will be through Charlie Zegers at ANSI. Bill Simpson, who was a member of the working group also was volunteered as well. Portions of the document were then shown to the working group, including showing a schematic of the aging cell, which allows for aging of materials with dissimilar thermal capability. (Such as high temperature fluids and cellulose, or high temperature solids and mineral oil). The aging philosophy was then discussed, whereby there are suggested times/temperatures established in the document, where there are specific criteria for evaluation of both the solids and the fluids, and whereby there is a method described for establishing the ratio of materials within the aging device. Jin Sim asked if there was moisture content and/or oxygen content specified in the method (as they are in the other methods to some extent), and it was agreed as a group that this should be in our final method. This led to a discussion regarding adoption of IEC by IEEE and whether portions could be adopted, after the discussion (Jin Sim, Hasse Nordman, and Patrick McShane), that partial adoption with appropriate reference has been done in the past. 7.4.3.5 Discussion of DuPont-Weidmann test of Model using Thermally Upgraded Kraft The chair then described a test current just beginning by a joint team from DuPont and EHV Weidmann � using this model to evaluate different thermally upgraded papers, ranging in Nitrogen content from 0% (non-upgraded) to 3.4%. A single test was conducted in the last couple of weeks as DuPont was finishing installation of new oil processing equipment, which gave results similar to expected data. The plans are to age all four papers at three different temperatures to both validate the aging model, but more importantly to help the community address issues regarding how to evaluate thermally upgraded kraft (more than just the QC test for percent Nitrogen). Jin Sim noted that they feel this test is necessary to then buy into the Nitrogen content as a release test.

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Jin noted that we need to specify oxygen and moisture content in these tests, and the chair will discuss and note in the test plan. Jin Sim noted that there is a lot of confusion by users who only casually read the documents in reference to the number of hours listed. For example, if one uses 50% tensile retention, you get 65,000 hours, if one uses 200 DP, you get around 150,000 hours and if you use the C57.100 method (Lockie test), you get 180,000 hours. Jin suggested the criteria be more clearly stated. 7.4.3.6 Work Going Forward The chairman asked for volunteers with experience with either of the two methods to look at the C57.100 document. Patrick McShane agreed to look at it. The chair will also circulate the document to working group members with this assignment. Jin Sim asked if other IEC documents could be useful in this work, and Jane Verner agreed to search to see if she could find other work. Jin noted that the requirements in C57.100 for short circuit testing and dielectric testing were very useful, but very difficult to do on a large scale. Hasse Nordman then described actually life of transformers with non-upgraded life with known hot spot temperatures not meeting expected life from aging curves in standards (non-upgraded kraft with only 90ºC hot spot in a GSU application, for example). He feels that if there are lab tests which can provide �derating� based on factors it would be very useful. 7.4.3.7 Adjournment The meeting adjourned at 10:35 AM. 7.4.4 Task Force for Revision to Temp Ratings in C57.12.00 – Dennis Marlow The Task Force met on Tuesday, October 25, 2005 at 11:00 AM. There were 8 members and 20 guests in attendance. The minutes from the Jackson March 15, 2005 meeting were approved as submitted. The task force was formed to make recommendations to the Insulation Life SC concerning the 2 proposals for temperature rise changes to C57.12.00 clause 5, submitted by Dennis Marlow at the Amsterdam meeting in April 2001. The Chair did not review the IEEE patent disclosure requirements. Proposal 1 dealt with changes to the average temperature rise for ODAF cooling from 65°C to 70°C

• At the last meeting the TF decided, based on the large number of negatives and the limited applications for this proposal to NOT recommend its inclusion in C57.12.00 at this time. Since then, there has not been any comment on that decision. The proposal has been archived for possible inclusion in other standards in the near future.

Proposal 2 dealt with changes to the average temperature rise of two windings that were located one above the each other.

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• The TF again discussed the individual comments received from the Jan 2005 survey results using the initial observations and comments made by the TF Chair as a base.

• After making one editorial modification to the wording in the second sentence �temperature limit� changed to �temperature rise limit�, the TF unanimously agreed to recommend to the IL SC that this proposal be included in a suitable section (Annex) of C57.12.00 or C57.12.10

• The final wording is per the following: Final Proposal Oct 2005

“In transformers with concentric winding arrangement, two or more separate windings may be situated one above the other. In this case, the average winding temperature rise limit shall apply to the average of the individual readings for the stacked windings if they are of equal size and kVA rating and similar design. If they are not, the evaluation should be subject to agreement between the user and the manufacturer. For all rated loading conditions that are evaluated, a hot spot temperature rise limit of 80°C shall still apply to all windings”

The TF will not meet again as their work is complete. NEW BUSINESS There was no new business The meeting adjourned at 11:40 Respectfully submitted, Dennis Marlow. Task Force Chair 7.4.5 Task Force for Temperature Rise Test Procedures Section 11 of C57.12.90 -

Paulette Payne The Working Group met October 24, 2005 at 11:00am in the Forest Room of the Peabody Memphis Hotel. There were 13 members and 37 guests present. Mr. Oleh Iwanusiw was announced as a new corresponding member; membership is now 37. The Chairperson introduced the new Vice Chair, Juan Castellanos and informed attendees that we are seeking a volunteer for the position of Secretary. Members were provided the opportunity to identify or disclose any patents believed to be essential for the use of Clause 11.0; no patents were identified or disclosed. Discussion focused on the three action items: time to re-energize, duration for data collection, and equation for data regression.

Time to re-energize less than 1-hour if the 4 minute limit of resistance measurement after shutdown is not achievable or when another terminal pair needs to be measured. The WG agreed on returning the transformer to the stabilized top oil temperature. Don Platts will word the proposed statement. Time duration for data collection. Several members indicated based on their experience it typically takes 10 � 12 minutes to collect the data. Discussion

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focused on concerns that enough data points be measured to be statistically significant for plotting an accurate curve whether a distribution or power transformer. Bob Ganser will prepare a proposed statement. Equation for data regression to time zero. Tim Raymond, Bob Ganser and Vasanth Vailoor volunteered to help Thang Hochanh developed the equation for data regression to time zero. The equation will be submitted before the next meeting.

New Business Mark Perkins� email on measuring the gradient on a Delta winding transformer was discussed. There is concern for a temperature blockage on another phase. DGA was identified as a diagnostic as well as testing methodologies identified. Don Platts mentioned that Mark is seeking to standardize winding resistance measurement for cold resistance and hot resistance. The Chairperson will follow-up with Mark Perkins. Pierre Riffon�s proposal for eliminating top oil rise stabilization correction instead using the average oil method like IEC was discussed. It was noted that average oil measurement is difficult to achieve and depends on physical dimensions. A poll of the attendees indicated that both the top oil rise and average oil methods are used and some favor one method over the other. Subhash Tuli�s proposal on the measured loss at cutback was read, but not discussed. The Chairperson will follow-up with Subhash to clarify the proposal and submit it with the meeting minutes for subsequent discussion. As there was no other new business, the meeting was adjourned at 12:15pm. Vice Chair � Juan Castellanos Chairperson � Paulette Payne 7.4.6 Task Force Definition of Thermally Upgraded Insulation. – Don Platts 7.4.7 Task Force on Winding Temperature Indicators - Phil McClure This task force did not meet. 7.4.8 Old Business: Jin Sim submitted the following proposal for a task force.

Task Force: Moisture Estimation in Transformer Insulation Subcommittee: Insulation Life Committee: IEEE/PES Transformers TF Members: TV Oommen, Tom Prevost, Mark Perkins, Don Platts, Jim Thompson, Andreas Garnitschnig, Barry Ward, Oleg Roizman, Valery Davydov

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TF Chair: H. Jin Sim TF Proposal to the Insulation Life Subcommittee During the IEEE Transformers Committee meeting at San Diego, CA, March 2004, a panel session was organized and sponsored by the Insulating Fluids Subcommittee. This panel session highlighted most of the methods available to estimate the moisture content of liquid immersed transformer insulation. In addition to this, there are large amount of technical references available from previous conferences such as Doble, CIGRE, EPRI, etc. The TF proposes to write a technical paper, which can become a basis for a future IEEE guide, on the subject. This paper will describe, as a minimum, the following.

• Why is moisture content important? • List of methods available today to estimate the moisture content • TF review and recommendations on each of these methods • Practical method(s) that can be utilized by a technician in field

environment • How moisture gets into the insulation • How moisture is removed from insulation in the field • Definition of moisture parameters of a transformer paper-oil-gaseous

headspace complex • Loss of life of paper and oil due to moisture • Distribution of moisture in transformers

The TF will present the paper through IEEE/PES Conference or General Meeting. The TF will also recommend if there should be an IEEE guide on the subject at the end of this project.

7.4.9 New Business Tim Raymond presented information on the age acceleration factor. He calculated two factors based on papers by Lundgaard, Emsley and McNutt for upgraded paper and non-upgraded paper. The results indicate that a simple approach may not be appropriate. Anyone with additional data or research on this subject should contact Tim. Subhash Tuli expressed the following concern.

To: Paulette Payne Powell Working Group Temperature Rise Test Section 11.0 of C57.12.90 Often a Thermal Test is performed based on the constant ITC by the equation ITC = IL [(Cu losses + Fe losses/Cu losses)]1/2 to obtain thermal constants such as oil and winding time constants as per C57.119. If the total actual measured losses at the time of oil stability is much greater than the calculated total losses (Cu losses + Fe losses) the top oil temperature rise may be affected. Does the top oil rise thus obtained warrant correction of the top oil temperature by the equation Td = Tb [(W/w)n -1]

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where Td = liquid rise correction (oC) Tb = observed liquid rise (oC) W= required loss (W) w = actual loss (W) n = 0.8 for ONAN, 0.9 for ONAF and OFAF, and 1.0 for ODAF?

Please Clarify.

7.4.10 The meeting adjourned at 9:00 AM Don Platts Chair, Insulation Life Subcommittee 7.5 Performance Characteristics Subcommittee – R.S. Girgis 7.5.1 Introduction/Attendance

The Performance Characteristics Subcommittee (PCS) met on Wednesday, October 26, 2005 with 66 members and 46 guests in attendance. 9 of those guests requested membership in PCS. See last page of these minutes for attendance summary.

7.5.1 Approval of Meeting Minutes

The minutes of the last meeting in Jackson, MS were approved as written. 7.5.2 Chairman's Remarks 7.5.2.1 Administrative Subcommittee Notes

• Next Standards meeting dates and locations are as follows:

Spring 2006: March 19�23 in Costa Mesa, CA Fall 2006: October 22�26, Montreal, Quebec, Canada Spring 2007: March 11�15, Phoenix, AZ

• IEEE PSCE (Power Systems Conference & Exhibition) upcoming meeting: Atlanta, GA: October 29 � Novemeber 1, 2006.

• IEEE T&D Exhibition / Conference which was to be held in New Orleans will be held May 21-26, 2006, in Dallas, TX.

• The �Loss measurment and tolerances� Guide C57.123 was approved by the Adminstative SC for submittal to get a Dual IEEE / IEC Logo.

• For getting approval, requests for Par extensions will need to include why the extension is needed and the work plan in the extension period.

• Chairmen of TFs, WGs, and SCs need to update their membership lists. • The Transformer committee is encouraging Correspondence members.

7.5.3 Agenda Changes

None

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7.5.4 Working Group and Task Force Reports 7.5.4.1 PCS WG for Continuous Revision to C57.12.90 – Mark Perkins, Chairman;

Rowland James, Secretary The WG met on October 24, 2005 at 9:30 A.M. There were 51 persons in attendance, 28 members and 23 guests. Mark announced he had e-mail problems so the Working Group members did not receive their handouts. Therefore, the handouts at the meeting are reserved for Working Group members only.

After introductions, Mark reviewed with the Working Group IEEE�s Patent Requirements for Standards under development. Two slides provided by the Transformers Committee related to the IEEE�s Patent Policy were presented and an opportunity was provided for WG members to identify or disclose patents that may be essential for the use of this standard. No responses were received.

The minutes from the last meeting were then reviewed and approved.

1. Jerry Rosselli presented a proposed draft of section 9.5 �Zero-phase-sequence impedance tests of three-phase transformers�. In this draft, the procedure for measuring zero sequence impedance is described.

a. Jerry asked the group to review the draft. Equation (23) is independent of what coils are involved.

b. Subhash Tuli commented that he verified that this equation does work on various types of transformers but it is time consuming and may not be practical in production facilities. Jerry responded that there will be additional testing in order to verify this method.

c. Mark added that he e-mailed this draft to members of the Working Group this morning. Dennis Marlow asked if the draft sent was the same as the one presented at the meeting. Mark will verify and retransmit if necessary.

2. Subhash Tuli reported that the recirculation ballot of C57.12.90 will go out in the next few weeks.

3. Short-circuit measurements � Comments from Marcel Fortin on the last ballot of C57.12.90 were made regarding the procedures for short-circuit tests. A task force headed by Marcel consisting of 4-5 members will consider these changes and report back to the working group. Other members were Steve Snyder, Gerry Rosselli, Dennis Marlow, and Subhash Tuli.

4. Resistance Measurements, section 5 � A first draft of proposed changes was presented to the group and a Task Force will be established to address this section. Subhash Tuli, Dennis Marlow, Steve Snyder, and Kumar Mani volunteered to serve on this Task Force to review the proposed changes and report back.

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a. Mark identified major proposed changes. He was asked if the one hour wait time described in section 5.1.2 was for directed or non-directed cooling. Mark answered that this is acceptable for both.

b. The question was asked �where is bottom oil temperature measured?� It was stated that bottom temperature should be defined by the Thermal Performance Working Group.

c. Mark commented that the Voltmeter / Ammeter method is the preferred method to measure small resistances. It was asked if the current level should be specified. Pierre Riffon responded that in low voltage ranges the current is susceptible to noise. Mark added that several resistance readings should be taken and averaged. Mark recommended adding a note to 5.3.1, c-1 stating that the current should be sufficiently high enough to prevent noise. Loren Wegenaar suggested that the resistance measurement method used be indicated on the certified test report.

d. Resistance measurement connections were discussed. Pierre recommended that phase-to-neutral measurements should be taken. A comment was made that neutral resistance must be removed. Joe Foldi recommended that for both delta and wye connections individual winding resistances can be determined mathematically.

e. A section on testing autotransformers is also included in the proposed draft.

f. Comments from James Wilson (9.3.3.4 and 9.5.1) have been resolved in draft 3.

7.5.4.2 PCS WG for Continuous Revision to C57.12.00 - Steve Snyder, Chairman;

Dennis Marlow, Secretary The Working Group met on Monday, October 24 at 1:45 PM. There were 23 members and 41 guests in attendance, with the following 2 people requesting membership: Tim Raymond Power Delivery Consultants Inc. Javier Arteaga Kuhlman Electric The addition of the 2 new members brings the Working Group membership to 64. Following introductions, the chairman then reviewed the IEEE patent disclosure requirements. No guests or members present indicated knowledge of any patent activity applicable to our work at this meeting. The minutes, from the March 14, 2005 Jackson meeting, were approved as submitted. The Working Group then began discussing the topics of old business, as follows:

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WG Item 58 C57.12.00/D2 April 2002 Table 19, “Routine, design and other tests for liquid-immersed transformers”. The request is to revise and expand this table to clarify the test requirements for all transformers. One proposal is to add a third set of three columns which would eliminate several of the notes that supplement the table. The Working Group agreed that this would make the table more understandable. Prior to the meeting, the chairman had emailed a proposed new table to the membership seeking their input, and this will be a working document for future review by this WG. The Chair will also request that this new table be circulated to the Distribution Transformers Subcommittee seeking their input before the next meeting. WG Item 59 C57.12.00/D2 April 2002 Section 7.1.4.2 is a request to change the standard to include source impedance in the short-circuit testing of category II transformers. This product classification is distribution transformers, so the chairman had solicited and received input from the Distribution Transformers Subcommittee prior to this meeting. Quite a number of responses were received, none of them supporting the requested change. The existing wording will not be changed. WG Item 60 C57.12.00/D2 April 2002 Section 5.10.2.5, Neutral not brought out of tank. A request was received to modify the second sentence in this section to recognize that customers sometimes specify the neutral to be left ungrounded. The WG agreed, and the two sentences will be replaced with the following wording:

“Insulation levels shall not be assigned where the neutral end of the winding is not brought out of the tank through a bushing and is solidly grounded to the tank.”

WG Item 61 C57.12.00/D2 April 2002 Note 4, “Table 19: Routine, design, and other tests for liquid-immersed transformers”. A comment was received that this note should give guidance as to the cooling conditions at which the sound test is to be performed. It was suggested that as a minimum, one test should be done at minimum rating and one at the maximum rating. There was a great deal of discussion on this topic. Some concern was expressed about whether the Audible Sound and Vibration Subcommittee or the C57.12.90 Working Group should address this item, but in the end we agreed that PCS needs to specify the tests that need to be performed. Following is the consensus statement that will be added as the third sentence in this note (note 4):

“As a minimum, one test shall be performed at the cooling stage for the minimum rating and one test at the cooling stage for the maximum rating.”

WG Item 62 C57.12.00/D2 April 2002 Section 5.12.2 Table 10: Nameplate information, Note 6. This is an editorial request that the example listed in this note should state kV BIL instead of simply BIL, as

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is shown presently. The Working Group agreed, and the revised note will read:

High-voltage winding 450 kV BIL High-voltage winding neutral 110 kV BIL High-voltage winding neutral bushing 95 kV BIL Low-voltage winding 95 kV BIL

(Note: this was clarified in discussions immediately following the meeting). WG Item 63 C57.12.00/D2 April 2002 Section 5.12.2 Table 10, Nameplate information Note 11. A suggestion was received to use gallons in lieu of cubic-meters as the unit of measurement for liquid volume, as expressed in this note for nameplate data. The working group was in favor of this suggestion, but the chair was unclear whether this might conflict with IEEE metrification policy. The Chair will investigate and report at the next meeting. The WG did determine that we should add an item d) to express this statement, which will read as follows (pending a ruling on the IEEE metrification policy):

d) The volume of insulating liquid, in gallons (liters), and type shall be shown for the main tank and for each liquid-filled compartment.

WG Item 64 C57.12.00/D2 April 2002 Table 21: Test system accuracy requirements. A request was received to change the stated test system accuracy for temperature measurement as it relates to loss measurement, from +/- 1.0°C to +/- 1.5°C. The basis for this request is that the accuracy of a calibrated type T thermocouple by itself is +/- 1.0°C, before considering the accuracy of the measuring device. The ramification of the proposal on loss correction due to temperature changes is miniscule. After discussion, the WG agreed by a vote of 36 to 1 to accept the new tolerance. WG Item 65 C57.12.00/D2 April 2002. A request was received to include a new category of “wind-turbine padmount step-up transformers” into the standard. It was recognized at this meeting that a new task force has been convened to study this proposal. No further action is planned in this WG on this topic at this time.

WG Item 66 C57.12.00/D2 April 2002 Section 5.12.2 Table 10: Nameplate information, note 9. A couple of comments were received stating that the terminology used in this note are inconsistent with the standard for instrument transformers (C57.13) as it relates to the word “potential” transformers. The correct terminology is “voltage” transformers. The Working Group agreed we should make the recommended change to be consistent.

7.5.4.3 WG on Loss Tolerance and Measurement - Ed teNyenhuis, Chairman; Andy

Steineman, Secretary ! 23 members and 17 guests attended, with 3 guests (Saurabh Gnosh,

Khalin Vladimir, Joseph Cheung) requesting membership.

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! Minutes from the Jackson meeting held on Mar 15th, 2005 were read and approved.

! IEEE Patent Policy - The policy was reviewed by the WG and an opportunity was provided for WG members to identify or disclose patents that the WG member believes may be essential for the use of that standard. No responses were given.

! TF for �Guide of Low Power Factor Power Measurements� � No meeting was held.

! Liability with respect to IEEE patents was discussed as per comment at previous WG meeting. IEEE has disclaimers concerning liability and WG members are indemnified by IEEE insurance. But no litigation has been brought against PES. Thus, there is no concern.

! Frequency Conversion Factors of Transformer Performance Parameters - The wording for C57.12.00 and C57.12.90 was put to a re-survey in PCS and 14 survey responses were reviewed in the WG. Eight of the 14 responses were �Accept With No Comments�. From the other responses with comments, below are the resulting changes that were agreed upon by the WG: ! Change the definition of PRI2 to �Calculated I2R losses at rated current

from the DC resistance measurement�. ! Keep the separation of eddy & stray loss. For the winding rise

current, it was asked what a manufacturer can do if they cannot separate the eddy & stray. It was agreed that all manufacturers have some calculation method (even if it is just a factor and not FEM) for separating the eddy & stray.

! Change all instances of �eddy� to �winding eddy� ! It was decided not to add wording in the frequency conversion annex

on the frequency tolerance, that applied voltage is measured according to the average voltmeter method or that waveform correction is needed. All this is already described in the 12.00 or 12.90.

! Specify that sound correction only applies to A-weighted sound level ! There is no need to say that I2R losses are not converted (they are a

DC test). This is already well understood. ! Revise �Heatrun current� to �Total Losses Run Current� ! Put in distinct equations for the 60 to 50 Hz conversion. The WG

affirmed again the need for such factors. ! Modify the temperature conversion section so that it is clear that

correct losses are fed during the heat run and that the estimated injected current is a guide only

! There was a request to simplify each of the conversion factors. The WG agreed to keep the factors as derived.

! The chairman will make the above agreed upon changes and submit the revised wording to the WG members for comments. The wording will then be sent to the PCS chair to carry out approval.

! The variability of the sound level data was re-examined. The data showed a range of +1 to +5 dB and a factor of + 3.6 dB was selected. As was shown, some of the variability is due to the A-weighting at the different spectra. For example, if the 120Hz is dominant, the conversion is close to 3.5 dB. But if the 300 Hz is dominant, then the conversion should only be about +1 dB.

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7.5.4.4 WG on Switching Transients Induced by Transformer / Breaker Interaction,

PC57.142,WG - Robert Degeneff, Chairman; Peter Balma, Secretary The WG was called to order at 8:03 AM on October 26, 2005. There were 71 attendees, 29 members, 1 requesting membership, and 41 guests. The Minutes from the March 15, 2005 meeting in Jackson, MS were approved, and copies of the minutes, Draft 1.7 of the guide, and ballot comments were distributed. 1. IEEE patent policy was reviewed and the group was asked if there were

any disclosures. There were none. 2. Bob Degeneff briefly summarized a presentation on this topic that was

made at the Moscow Colloquium of the CIGRE SC A2 Transformer group. For interest of the group, he presented several new areas for consideration when examining transformer breaker interactions. Among the items considered were single phase versus three phase representation of the circuit being modeled and the connection of the primary and secondary winding in three configurations. Various switching device pole spans were considered, and results displayed indicated that the resonant frequencies of concern change depending on switching sequence considered. While this subject area is not included in the guide at present, it would be a valuable contribution to future revisions of this guide.

3. A question was raised if anyone has seen a transformer breaker

interaction under loaded conditions. There was one response indicating possibly, but it had not been investigated in sufficient detail yet.

4. Next, a brief history of the working group was reviewed, as listed below:

a. Original topic was considered in 1996 b. Working Group was formed in 1997 c. Task force agreed to write Guide in 1997 d. PAR written and C57.142 assigned in 2001 e. Asked for assistance of Switchgear Committee, as they have

separate WG f. Joint tutorial presented in Raleigh, NC - 3/18/03 by

Tobin/Hopkinson/Degeneff g. PAR extension requested and approved h. Draft circulated in 2004 � asked for input/guidance from

subcommittee i. Ballot held August 2005

5. Results of the ballot, which was open from 8/9/05 to 9/9/05, were

reviewed and are as follows: a. 145 eligible members in ballot pool b. 115 votes received (79% returned) c. 85 affirmative votes d. 22 negative votes with comments e. 2 negative votes without comment f. 6 abstentions

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g. 107 countable votes h. 85/107=79% affirmative

6. A summary of comments received was presented. There were 438

comments in system, and more than 500 received. Eighty ballots had no comments, and 90% of comments were by 10% of voters. The comments were in three major categories, typos and figure number references, editorial (clarity & simplification), and technical/philosophical content.

7. It was proposed that the editorial comments would be addressed by Peter

Balma & Bob Degeneff, who will convert the document to the new IEEE template, correct typo�s & figure numbers, and make editorial changes. Furthermore, Pierre Riffon volunteered to re-write the breaker section.

8. There was considerable discussion and suggestions as to how to proceed

with resolving technical comments, particularly those associated with the breaker section. The general consensus was that the Switchgear Committee should be contacted, so that their concerns could be addressed in a constructive exchange of ideas.

9. Angela Ortiz, Program manager from IEEE indicated that the proposals

discussed were ok, but suggested working with Marcel Fortin (of the Switchgear Committee) and a small group (a ballot resolution committee) to get resolution of the Switchgear Committee�s concerns. She also indicated that IEEE would look at coordinating or developing liaisons between the Transformer and Switchgear committees. Don Fallon added that the group was headed in the right direction, and asked that Ramsis Girgis contact the Switchgear Committee to begin additional dialogue.

10. A motion was made by Marcel Fortin and seconded, that the chairman�s

proposal to have Dr. Pierre Riffon and a group of Switchgear Committee members to review and re-write the breaker section of the guide. A vote on this motion indicated that the majority of the working group agreed with the motion, there were no negative votes, and the motion passed.

11. Next steps are to develop all revisions within the next 3 months,

communicate with all negative balloter�s, and to prepare for a re-circulation ballot prior to the next meeting.

12. There was no new or old business brought up before the Work Group.

7.5.4.5 WG on Revision of C57.21- Standard Requirements, Terminology, and Test

Code for Shunt Reactors over 500 KVA – Richard Dudley, Chairman The W.G. met on Oct. 24, 2005 from 11:00 a.m. to 12:15 p.m. There were 13 members and 11 guests present. The following are highlights. 1. The minutes of the W.G. meeting in Jackson, Mississippi were approved.

NOTE: The minutes of the Memphis W.G. meeting will not be formally approved until the W.G. meeting in Costa Mesa, California.

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2. IEEE patent policy was reviewed as it applies to the revision of this

standard. No patent issues were noted. Attendees were directed to the IEEE Transformers Committee website for more details on IEEE patent policy.

3. Draft #4, prepared by the Chairman, of the revision of IEEE C57.21 was

discussed. The following are the highlights:

(i) The major subject of discussion was the audible sound test.

Since the majority of the meeting was devoted to this discussion W.G. members were asked to provide input regarding other revisions in D # 4 via e-mail.

(ii) There was a great deal of discussion as to whether the audible

sound test should be performed at nominal / rated voltage or at maximum voltage.

(iii) There is consensus that the audible sound type test should be

carried out at rated temperature. In the case of oil-immersed shunt reactors, where a routine audible sound test is required, it can be carried out with the SR �cold� provided a reference audible sound test is carried out at the beginning of the audible sound type test with the SR cold.

(iv) There is some advantage to conducting the audible sound

type test as part of the temperature rise type test.

(v) The audible sound test is required to assess environmental impact and also as a quality check. If sound level guarantees are related to environmental impact then it may be more appropriate to carry out the audible sound test at nominal/rated voltage vs. maximum voltage. However this is based on the assumption that SRs are employed to bring high system operating voltages, due to light loads, down to nominal values. In the case of using the audible sound test as a quality check then it may be more appropriate to carry out the test at maximum operating voltage.

(vi) How should historic databases of audible sound test results be

handled and correlated with new audible sound tests as test parameters may vary; cold vs. operating temperature, maximum vs. rated system voltage?

(vii) Should it be left to the customer to specify the voltage level at

which the audible sound test is carried out? The rationale for carrying out the audible sound test should be described in the standard; environmental, quality check, SR construction etc.

(viii) In the IEC reactor standard the audible sound test on SRs is

carried out at rated voltage. It should be noted that for SRs

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manufactured to the IEC standard maximum and rated voltage are often the same.

(ix) The Chairman agreed to redraft the sections of C57.21

covering the audible sound test, taking the above into consideration, and e-mail the drafts to W.G. members for comment. This will be done as soon as possible as the Chairman would like to issue Draft # 5 prior to the Costa Mesa meeting in a ready to ballot condition.

Following the Costa Mesa meeting, it is the Chairman�s objective to go out for ballot. To meet this objective all W.G. members are requested to provide input re D#4 as soon as possible so that the Chairman can issue D#5 well in advance of the Costa Mesa W.G. meeting.

7.5.4.6 WG on Revision of C57.110 – IEEE Recommended Practice for Establishing Liquid-Filled & Dry-Type Power & Distribution Transformer Capability When Supplying Non-Sinusoidal Load Currents – Rick Marek, Chair; Kent Haggerty, Co-Chair

The meeting opened with introductions at 1:45 PM. There were 12 members and 15 guests present. 4 attendees requested membership on the WG. The IEEE Patent disclosure requirements were addressed. A request was made for disclosure of any patents that may be related to the work of the WG. There was no response to the request for disclosure. The minutes from the Jackson meeting were approved as submitted to the SC Chair. Ramsis Girgis was requested to report on rewording the Abstract and Introduction, but the work is not yet complete. The additional wording on neutral heating due to 3rd harmonics also was not available due to the absence of the Phil Hopkinson. The Chair asked the membership if the WG should harmonize the C57.110 symbols with C57.18.10. The most important symbols would be the harmonic loss factors for eddy loss and other stray loss. One concern was the potential impact on the industry, since the document has been in use for a number of years. After some discussion, it was agreed that the two documents have sufficiently different audiences, and the differences would not be a problem. The two documents will be revised with the current symbols. There being no further old business, the chair introduced Alvin Kopp who made a presentation on the application of a solid state AC power source. Since this programmable device is capable of injecting a complex wave shape, it may be possible to perform a heat run with a current that simulates the harmonic components described in this document. The presentation was well received with a number of questions. The chair noted that draft 1 is progressing very slowly and that the whole document requires re-formatting to match the latest Styles Manual. The chair also noted that draft 1 will be transferred to the new template described at the Standards Development Lunch. The new template with its automatic links

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and macros should reduce the formatting time that will be substantial due the large number of bibliography references, formulas and tables. There were no comments on the draft that was provided to the members and guests in advance of the meeting. All members and guests were reminded to continue to identify any technical papers or books that would be appropriate for addition to the Bibliography. A revised set of tables was also presented to the WG along with a summary of the rules on significant figures that were used to reduce the number of significant figures to 2 or 3. It was agreed that this change makes the document easier to read and is more reasonable considering the approximate nature of the calculations. Chuck Johnson will review the document to make sure the reader is properly advised that although there are many complex formulas in the document, the conceptual approach still results in an approximate answer.

7.5.4.7 TF on Semi-Conductor Rectifier Transformers, C57.18.10 – Sheldon Kennedy, Chairman

The Working Group met on Monday, March 24, 2005 at 3:15 PM with 13 members and 11 guests present. Sheldon Kennedy chaired the meeting. The IEEE disclosure statement was read. There were no patents pertaining to this standards work for which any members had awareness. The minutes of the March 14, 2005 meeting in Jackson, Mississiippi were approved. The Chair announced that we were beginning work on the Amendment to C57.18.10, which had been approved as a PAR by IEEE. Comments received during the reaffirmation of C57.18.10 required action to resolve the negative votes received. We are correcting the errors and missing or undefined terms. Technical comments will be worked on during a full revision process following the amendment revision. Items from the comments for editorial corrections received during the reaffirmation were reviewed. The Chair volunteered to make all of the editorial corrections that were noted, including the missing or erroneously labeled technical terms. Rick Marek volunteered to submit proposed definitions to the working group for the terms Ez, Pa, Pb, and Pc. During the working group review it was noted that the comments received were from the PDF copy of the standard. When the chair was reviewing this with the hard copy it was found that there were differences in the two. One reviewer had commented that the standard lists Figures 4 through 7 for circuit diagrams; while in reality the Figures were numbered 4 through 9. Somehow, the PDF copy differed from the hard copy, which was correct. There were two pages of Figure 5 and Figure 5 Continued, as well as Figure 6 and Figure 6 Continued. These were renumbered to Figures 5, 6, 7 and 8 by someone in IEEE. Then the preceding Table 7 was renumbered to Table 9 by IEEE. Figures 5 and 6 are long and show as continued purposely as they group

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types of circuits together. This is the same as it was for the preceding standard for mercury arc rectifier transformers, ANSI/IEEE C57.18, which was replaced by this standard. Similarly, it was noted that Annex A has Tables A.1, A.2, A.3, A.4, .... In the hard copy there is an error in that Table A.1 is labeled Table A.11, even though there is another Table A.11 later in the Annex. Perplexing is that the PDF copy also labels Table A.1 as Table A.11; and additionally labels Table A.2 as Table A.12, and Table A.3 as Table A.13. Again the PDF and hard copy are different. These problems appear to be from the conversion into PDF which performed an automatic renumbering of tables. We were fortunate to have both Angela Ortiz and Jennie Steinhagen from IEEE in attendance at our meeting to hear these comments. Several possible resolutions were discussed. Tables A.1, A.2, A.3 and A.4 must be corrected. We could leave Tables 5 through 9 as they are shown in the PDF, or correct them back to Tables 5 through 7, as they were in the hard copy. If we leave them as they are, C34.2, the rectifier standard that uses these same tables, may also need to be changed. But, it may be preferable due to the way the programs perform automatic numbering. Angela and Jennie said they would look into this and see what IEEE would advise us to do. The Chair will make whatever necessary changes are needed in the Amendment. This concluded all of the comments that were included in the amendment revision. The corrections and additions will be circulated to the working group as a survey. If this is successful, the Subcommittee will be surveyed.

7.5.4.8 WG on Neutral Grounding Devices, PC57.32 – Steve Schappell, Chairman

The Working Group met on Tuesday, October 25 at 9:30 AM. There were 12 members in attendance. The chairman, Steve Schappell could not attend the meeting and H. Jin Sim conducted the meeting for him. Richard Dudley reported that a sufficient amount of information on Grounding Resistors and Arc Suppressing Coils from IEC have been made available for us to utilize in our document. We will need to rework the information to suit the IEEE format. We discussed the need for including test codes for each devices covered by this standard. Although there are some benefits for having one document that contains complete information, the WG decided to include only the exceptions for individual devices and reference other documents to ensure that maintenance of the document is manageable. Peter Balma volunteered to work with the Chairman to complete the grounding resistor part of the document. After these items are completed, a new draft will be circulated to the Working Group members before the next meeting.

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7.5.4.9 WG on the Guide for the Application and Interpretation of Frequency Response Analysis for Oil Immersed Transformers, PC57.149 –– Chairman; Charles Sweetser

WG PC57.149 met for the development of a guide for Frequency Response Analysis (FRA) on October 25, 2005 at 8:00 A.M. There were 42 persons in attendance, 20 members and 22 guests of which 4 guests requested membership. The first order of business was to show the two slides regarding patents and inappropriate behavior. The minutes from the last meeting were presented and approved without comment. The Working Group chair presented a brief report on what had been done in the last six months. The latest contributions were identified and discussed. This meeting focused on two out of the six sections, Section 1: Scope and Application and Section 5: Analysis and Interpretation. Each of these sections was then discussed. • Section 1: Scope and Application � The work on Section 1 is almost

complete. However, the Working Group was not satisfied with one particular term, and that was the use of the term Self-Admittance to describe various test types. The Working Group provided alternative suggestions which included: Terminal Transfer Admittance and Terminal Transfer Response. This is still an unresolved issue. As a request from the previous meeting in Jackson, Jeff Britton submitted a new definition for FRA Frequency Response and two new test configuration diagrams. Jeff�s contributions will be added to the guide and commented on at the next meeting. Saurabh Ghosh, Ernst Hanique, and Roger Verdolin volunteered to review Section 1 for the next meeting.

• Section 5: Analysis and Interpretation � Prior to this meeting, no work

has been completed on Section 5. The WG Chair provided a new outline and a first draft attempt for review. The outline included topics such as Trace Characteristic, Trace Comparison, Relation to Other Diagnostic Tests, Failure Modes, and Modeling. Only Trace Characteristic, Trace Comparison, and Relation to Other Diagnostic Tests received a first draft attempt:

1. The subtopics for Trace Characteristic will investigate inherit diverse

properties and expected characteristics influenced by the winding and core configuration, test type, and other design differences. These expectations can be used to identify basic problems that may exist within a transformer.

2. The Trace Comparison section provides an analysis strategy for

comparing traces. Various methods were discussed which included manual comparisons of the test results and the use of advanced algorithms.

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3. With regards to Relation to Other Diagnostic Tests, the FRA results depending on the test connections can be used to confirm the results of other diagnostic tests. These tests include, Single Phase Exciting Current, Turns Ratio, Short Circuit Impedance (Leakage Reactance), DC Winding Resistance. Several FRA plots were presented illustrating where these relationships can be found.

4. It was the recommendation of Bertrand Poulin that we need to proceed

with the modeling subject cautiously. Bertrand indicated that modeling requires a true admittance measurement and that the current must be measured at the input of the test specimen. The test configuration for a true admittance measurement will be added to the modeling section but it will not be part of the primary test types used for determining mechanical problems in transformers. Alan Darwin indicated that he was aware of some addition modeling research conducted by CIGRE. Alan agreed to provide the Working Group with an update on the work.

The PC57.149 FRA Working Group plans to have a complete draft at the next meeting.

7.5.4.10 TF on Core Overexcitation – Craig Steigemeier, Chairman

The fourth meeting of the Core Over-Excitation Task Force took place at 8:00am on October 24, 2005. This Task Force is charged with the identification of limits for core over-excitation and coming up with suggestions for modification of appropriate standards. There were 83 attendees, of which 43 were members and 40 guests. Thirty-one (31) of the attendees were first time attendees to this task force meeting. Four (4) attendees requested membership and will be added to the Task Force member roster.

At the beginning of the meeting, the reminder of the need to adhere to the IEEE patent policy was stressed and the chair asked for anyone aware of patentable situations to bring it before the group. Also, the hotel and Committee�s WiFi capabilities were noted. No one offered the chairman suggestions during or after the meeting of patentable work or identified any inappropriate topics covered during the meeting. The suggested changes to C57.12.00, Section 4.1.6 (Operation above rated voltage or below rated frequency) covered previously were reviewed, with the intent being to pass these recommendations on to the appropriate working groups for action.

Detailed discussions were held concerning the suggestions made during the spring (Jackson, MS) meeting. The following were the suggestions for changes to C57.12.00, with deletions shown struck out and additions underlined: 4.1.6 Operation above rated voltage or below rated frequency

4.1.6.1 Capability - Transformers shall be capable of: a) Operating continuously above rated voltage or below rated frequency, at maximum rated kVA for any tap, without exceeding the

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limits of observable temperature rise in accordance with 5.11.1 when all of the following conditions prevail:

1) Secondary voltage and volts per hertz do not exceed 105% of rated values.

2) Load power factor is 80% or higher. 1a) For generator step-up transformers, the primary voltage is

equal to the highest generator voltage at full load as specified by the user.

1b) For system tie transformers, the primary and secondary voltages are equal to the highest levels specified by the user.

3) 2) Frequency is at least 95% of rated value. Additionally, at previous meeting it was decided to use 130oC as the core hottest spot limit rather than the 90oC rise over the 40oC ambient for clarity. The following additional clause was presented that addresses the core hottest spot:

4.1.6.3 Core hotspot temperature limit To avoid the generation of gasses in the core, the core hot spot temperature should be limited to 130oC for the condition of highest core over-excitation, full load, and the highest ambient temperature. It should be noted that the calculation for the hotspot is unique and different from the core surface temperature. The core hotspot occurs in an area where there is only a thin film of oil while the surface heating is more typical of metallic heating in the vicinity of cellulose. At previous meetings, it was agreed to add the second and third sentences to proposed clause 4.1.6.3 to emphasize that the calculation for the hotspot is unique and different from the core surface temperature and to clearly state that the core hotspot occurs in an area where there is only a thin film of oil.

Discussion of the proposed changes was conducted with the following significant comments made: # In general, the 130oC hotspot limit was well accepted during the

meeting, although the attendees felt that the limit should be acknowledged as a limitation of the core hot spot when exposed to mineral oil.

# A point was made that C57.12.00 covers both distribution, and power transformers. Thus, it was decided to leave the volts/hertz and power factor clauses in the document, and add the information suggested in 1a) and 1b) above to aid in achieving a clear understanding of the actual required capacity of the transformer for generator step-up applications.

# To clearly demonstrate the capacity of the transformer, the nameplate must adequately identify the actual capacity to which the transformer was originally designed. While standards may specify an overvoltage, if the transformer is capable of a greater or lesser overvoltage than that expected from the general clause of 4.1.6.1 due to the actual capacity of the generator to which it was originally connected, this must be clearly shown on the nameplate.

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# Data was presented by AEP showing the power factor values for 8 transformers over the past few years. The power factor varied as follows:

o The power factor for two transformers never went below 0.95 o The power factor for two transformers never went below 0.90 o The power factor for two transformers never went below 0.85 o The power factor for one transformer never went below 0.80 o The power factor for the remaining transformer never went

below 0.50 This example illustrates that many GSU transformers may operate at a power factor near unity, but the user must define applications where unusually low power factor operation is required.

# It was noted that recommendations for changes to C57.12.00 should be coordinated with C57.116, the IEEE Guide for Transformers Directly Connected to Generators. For reference, the overexcitation clause in this standard follows:

5.3.7 Overexcitation It is not likely that one high-voltage tap will allow full generator utilization over the full range of expected system voltages during the life of the UT. It is likely that more than one tap will be found desirable, as shown in Fig 9. A lower rated tap will allow the generator to absorb VARs for a lightly loaded system, while a higher rated tap will allow the generator to produce VARs for a mature, heavily loaded system. Use of a particular tap may change as the system grows or changes significantly. Overexcitation can occur when the UT is operating on one of the lower taps and the system voltage increases beyond 105% of that tap's rating. For instance, assume the transformer in Fig 9 is operating on the 23 kV�336.4 kV or 24 kV�351 kV tap and the transmission system is operating in the 345 kV to 353 kV range. Now assume that for some reason the transmission system voltage increases to 360 kV. It can be seen that the transformer secondary now has 107% voltage, which is 2% overexcitation. Methods for achieving suitable overexcitation characteristics for the transformer system should be evaluated economically. This definition is clear and stands alone. It does not appear to be in conflict with the proposed suggestions being made for C57.12.00.

# The duration of an overvoltage should be stated, since very short overvoltages will not produce gassing, but long duration overexcitation will have the most impact.

# Attendees suggested that a clear limitation of the core surface temperature would be desirable. While this task force has made a recommendation of a limitation for the core hottest-spot, a limit for the core surface temperature would aid in a clear understanding of the accepted performance characteristic. The following excerpt in C57.12.00 is the only limit of the �other� metallic parts of the core:

5.11.1.3 Rises of metallic parts other than windings

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Metallic parts in contact with current-carrying conductor insulation shall not attain a temperature rise in excess of the winding hottest-spot temperature rise. Metallic parts other than those described above shall not attain excessive temperature rises at maximum rated load.

In general, those attending desired to include modifications to address concerns over the adequate understanding of overexcitation situations. Suggestions from the meeting will be used to come up with another round of suggested changes. These changes will be reviewed with a volunteer group including representatives from the following 4 manufacturers and 10 utility/consultants prior to the spring meeting:

Peter Balma � Public Service Electric and Gas Company Stephen Beckman � Fort Pierce utilities Authority Enrique Betancourt � GE Prolec (volunteered after meeting) Donald Chu � ConEd Ramsis Girgis - ABB Peter Heinzig � Siemens Harold Moore - Consultant Rowland James � Entergy Miguel Oliva - ABB Bipin Patel � Southern Company Gustav Preininger - Consultant Ed teNyenhuis � ABB Bob Tillman � Alabama Power Company Subhash Tuli � Waukesha Electric Systems Loren Wagenaar � AEP Dieter Wagner � Hydro One Peter Zhao � Hydro One

7.5.5 PCS Standards Update

7.5.5.1 Status of PCS Standards

This status will be updated at the Costa Mesa spring 2006 SC meeting.

7.5.5.2 Responsibility Matrix of Performance Characteristics Subcommittee (PCS):

C57.12.00 C57.12.90

12.00 Clause Description

ResponsibleSubComm

12.90 Clause Description

4 Service conditions PCS 4.4 Instrumentation 4.1 Usual service conditions PCS 6 Polarity and phase-relation tests 4.3 Unusual service conditions PCS 6.1 Subtractive and additive polarity 5 Rating data PCS 6.2 Polarity tests: single-phase

5.1 Cooling classes of transformers PCS 6.3 Polarity and phase-relation tests 5.2 Frequency PCS 7 Ratio tests 5.3 Phases PCS 7.1 General 5.4 Rated kilovoltamperes PCS 7.2 Tolerances for ratio 5.6 Connections PCS 7.3 Ratio test methods 5.7 Polarity, angular displacement � PCS 8 No-load losses and excitation current 5.8 Impedance PCS 8.1 General 5.9 Total losses PCS 8.2 No-load loss test

5.12 Nameplates PCS 8.3 Waveform correction of no-load losses 6.7 Grounding PCS 8.4 Temperature correction of no-load loss

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7 Short-circuit characteristics PCS 8.5 Determination of excitation current 7.1 Requirements PCS 9 Load losses and impedance voltage 7.2 Components PCS 9.1 General 7.3 Base kilovoltamperes PCS 9.2 Factors affecting load loss & impedanc 9 Tolerances PCS 9.3 Measuring load loss and impedance

9.1 Tolerances for ratio PCS 9.4 Calculation of load loss and impedance 9.2 Tolerances for impedance PCS 9.5 Zero-phase-sequence impedance 9.3 Tolerances for losses PCS 12 Short-circuit tests 9.4 Accuracies for measuring loss PCS 12.1 General 10 Connection for shipment PCS 12.2 Test connections

PCS 12.3 Test requirements PCS 12.4 Test procedure PCS 12.5 Proof of satisfactory performance PCS 14 Calculated data PCS 14.1 Reference temperature PCS 14.2 Losses and excitation current PCS 14.3 Efficiency PCS 14.4 Voltage regulation� PCS 15 Certified test data

7.5.6 Old Business 7.5.6.1 A Par has been approved to update the SC Guide. The Par duration is until 12

/09. A Chairman for the WG to clean up this Guide is being sought. 7.5.6.2 The Chairman is also in the process of recruiting George Reiter to lead the effort

of reaffirming C57.105 (Transformer Connections) & C57.109 (Thru � Fault Current Duration) documents since these need to be sent for affirmation this year.

7.5.7 New Business 7.5.7.1 A request has been submitted by Mr. VSN Sankar for the IEEE Standards to

provide recommendation on parallel operation of transformers. The Chairman will look into this issue and present it in the spring meeting.

7.5.7.2 There was some discussion, brought forth by Mark Perkins, pertaining to

C57.12.90 about how to simplify the Test Code and speed up the Standards process. C57.12.90 is becoming a lengthy document, and maybe some of the excess information should go in a separate Guide or an Annex to 12.90. Some discussion points are: cover the simple issues in 12.90 and more complex ones in a Guide; Can create timing problems with publication dates of 12.00, 12.90, and various Guides; Guides cannot contain requirements; Put requirements in 12.00 & 12.90 and refer to a Guide; but does the Guide then become �Required�? This same topic was discussed in the Dielectric Test SC meeting and will be tabled for future consideration.

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Attendance at this Memphis Meeting

MEMBERS

1. Raj Ahuja 2. Jerry Allen 3. Stephen Antosz 4. Javier Arteaga 5. Peter Balma 6. Dave Barnard 7. Israel Barrientos 8. Barry Beaster 9. Enrique Betancort 10. William Boettger 11. Jeffrey Britton 12. Bill Chiu 13. Donald Chu 14. Larry Coffeen 15. Robert Degeneff 16. Dan de la Cruz 17. Charles Drexler 18. Richard Dudley 19. Don Fallon 20. Joe Foldi 21. Bob Ganser 22. Eduardo Garcia

23. Saurabh Ghosh 24. Ramsis Girgis 25. E. Gomez-Hennig 26. Myron Gruber 27. Ernst Hanique 28. Roger Hayes 29. Peter Heinzig 30. Bill Henning 31. Philip Hopkinson 32. Rowland James 33. David Keithly 34. Sheldon Kennedy 35. Vladimar Khalin 36. John Lackey 37. Tamyres Machado 38. Richard Marek 39. Dennis Marlow 40. John Matthews 41. Harold Moore 42. Van Nhi Nguyen 43. Samuel Oriti 44. Klaus Papp

45. Bipin Patel 46. Don Platts 47. Christoph Ploetner 48. Bertrand Poulin 49. Paulette Powell 50. Jean-Chris Riboud 51. Ewald Schweiger 52. Devki Sharma 53. H. Jin Sim 54. Steve Snyder 55. Andy Speegle 56. Andy Steineman 57. Craig Stiegemeier 58. Charles Sweetser 59. Craig Swinderman 60. Ed teNyenhuis 61. Robert Thompson 62. Robert Tillman 63. George Tolbbert 64. Subhash Tuli 65. Roger Verdolin 66. Peter Zhao

GUESTS

1. Pierre Riffon 2. Marcel Fortin 3. Pritpal Singh 4. Alvaro Cancino 5. Sergiy

Razuvayev 6. Girolamo

Rosselli* 7. Jim McBride 8. Nick Abi-Samra* 9. Shor Andre 10. Jose Salva 11. Jim Zhang* 12. Alex Uraemer 13. Brett Todd 14. Sam Mehta 15. Richard Tellez

16. Randy Rensi 17. Shuzhen Xu* 18. Laszlo Kadar 19. Martin Navarro* 20. Bill Griesacker* 21. Arthur Molden 22. Greg Troxell* 23. Randall Kyle 24. Hasse Nordman 25. Dick Sullivan 26. Gary McCulla* 27. Surinder Sandhu 28. Dick Amos 29. Ulf Radbrandt 30. Don Dorris 31. Bruce Fairris 32. Wayne Johnson

33. Mary Foster 34. Herman Vogel 35. Christoph

Schuette 36. Frank Bray 37. Charles Garner 38. E. Tom Jauch 39. Joe Garza 40. Moo Geun Park 41. Dwight

Parkinson 42. C.J. Kalra 43. Jim McIver* 44. Martin Heathcote 45. Ramon Garcia 46. Geoffrey Gill

* Guests requesting Membership.

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7.6 POWER TRANSFORMERS – TOM LUNDQUIST, CHAIRMAN The Power Transformers Subcommittee met at 1:30 pm, on Wednesday, October 26th with 64 members and 51 guests. 3 of the Guests requested membership. The minutes from the Jackson, MS meeting were approved with no changes or corrections. The chairman asked if anyone was aware of any patent conflicts, none were voiced. 7.6.1 WORKING GROUP AND TASK FORCE REPORTS 7.6.1.1 TASK FORCE FOR REVISION OF C57.17, REQUIREMENTS FOR ARC

FURNACE TRANSFORMERS – Dominic Corsi, Chairman The TF Chairman, Mr. Dom Corsi, called the meeting of the Task Force to order. at 8:00am. There were 16 attendees, 8 TF members and 8 Guests. Dom Corsi presented the power point statement of the IEEE By-laws and a reading of the By-laws concerning Patents. There were no expressions among the attendees concerning patent issues. The minutes of the last TF meeting, held in Las Vegas, October 25, 2004 were presented for approval. The minutes were approved as read. Copies of the Draft of C57.17 were distributed to those attendees who did not receive the copies, which were distributed also via email. The copies of the Draft will be made available again but via the IEEE email messenger service. Dom Corsi asked for discussion on the wording of Section 4.1.1, �Cooling Water Temperature Limits�. It was decided to allow more time to clarify concerns on this important issue and Mr. Frank D�Amico, a TF member volunteered to rewrite this section, addressing the concerns of some members of the TF. One attendee asked if the EAF Standard addressed Dry Type Transformers. Members of the TF suggested that the standard is applicable to Liquid Immersed Electric Arc Furnace Transformers and as such, Dry Type Transformer applications would be out of the scope of this standard. It was suggested that if Electric Arc Furnace applications are common in the Dry Type Transformer Product, that product group should address the application. Under New Business, Dom Corsi asked for volunteers to review several sections of the Draft. The sections and the volunteer reviewers are:

• Section 6: Laszlo Kadar; • Section 7: Bill Bartley; • Section 8: Bob Ganser; • Section 9: To be determined; • Appendix E: Bill Bartley, Laszlo Kadar, User input;

Dom Corsi suggested to the TF that it was his goal to have the Draft ready for final review at the next TF meeting. With no further business, the meeting was adjourned.

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7.6.1.2 WORKING GROUP FOR DEVELOPMENT OF PC57.143, GUIDE FOR

APPLICATION OF MONITORING TO LIQUID IMMERSED TRANSFORMERS AND COMPONENTS- Donald Chu and Andre Lux, Co-Chairmen

Meeting Minutes for Working Group on PC57.143 Transformer monitoring. 9:30 AM October 24, 2005 Memphis, TN

• 87 members and guests were in attendance. • Patent issue was mentioned with no one presenting an issue. • Appointment of Tony Pink as Secretary. • Revisions received were correlated into Draft 15 which was circulated

approximately 2 weeks prior to this meeting. Each revision resulting in Draft 15 was reviewed during the meeting.

• Summary of Draft 15 Revisions includes: o Revisions to the definition section o Move some technology specific details to an Annex including:

! Creating a new Annex for: Fiber Optic Winding Hot Spot Temperature Monitoring Technologies/Monitoring Methods

o Significant Changes to the following sections: ! Section 2.3 Bushings ! Section 3.2 Dissolved Gas In Oil Analysis ! Section 3.6 Winding Temperatures ! Section 4.1 Monitoring System Description

o Net Result of changes from Draft 14 to Draft 15: ! Several missing sections were completed ! One new annex added ! Body of the document is reduced by 8 pages ! Total document length including Annex sections increased by only

6 pages • Before the next meeting the following revisions will need to be completed.

o Conversion to comply with IEEE standards formatting. o Cross check definitions in document with IEEE standard definitions:

C57.12.80. o Check C37.10 standard for duplication of scope and eliminate those

sections which overlap scope already covered in another standard. o Move all remaining technology specific details to an Annex including:

! DGA Technologies/Monitoring Methods ! Partial Discharge Technologies/Monitoring Methods

o All additional feedback received before the next session will be consolidated into the next draft and will be circulated prior to the spring meeting.

• The meeting adjourned at 10:45. 7.6.1.3 WORKING GROUP FOR DEVELOPMENT OF PC57.148, STANDARD FOR

CONTROL CABINETS FOR TRANSFORMERS – Joe Watson, Chairman The working group met at 11:00 a.m. on Monday, October 23, 2005, with 40 in attendance. There were 21 members in attendance and 19 guests. Four of the guests

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requested membership. Working group chair Joe Watson and vice-chair Steve Schappell were unable to attend, so member Greg Anderson facilitated the meeting. The roster was handed out and introductions made. The minutes from the previous meeting were approved without comment. The group was again asked if there was any knowledge of any patents that may be essential to the implementation of the Standard. There were no responses regarding this issue. The standard document is presently at Draft 4 status. This draft was previously sent to the working group using the AM System. It was noted that Saurabh Ghosh submitted comments that were not incorporated. We will continue to refine the text and standard drawings and perform a straw vote soon. It is planned to submit for a full SA ballot before the Fall 2006 Meeting. The document will be revised and posted on the website. A few standard cabinet drawings were previously prepared and submitted by Fred Joyner from ABB. We appreciate ABB's contribution and Fred's work. These drawings will be used as a basis of the drawings incorporated into the standard. The standard is schedule to be balloted soon. There was little comment on these drawings other than we need to revise the title blocks and perhaps simplify them more (simpler is better!). It was decided to not provide too many details on overvoltage and overcurrent protection because fuse curves, etc. are readily available on the website. Circuit breaker and overcurrent issues are well defined in NEC, section 110-16. We need to ensure there is no conflict. Saurabh Ghosh offered to help with sections on ground bus and terminal blocks. Preliminary control drawings provided by ABB include: OA design without LTC, OA/FA without LTC, and OA/FA with LTC. We need to add drawings and text to address oil pump controls. Any additional comments should be referred to Joe Watson or Steve Schappell. The meeting adjourned at 12:15 am. 7.6.1.4 WORKING GROUP FOR DEVELOPMENT OF PC57.131, STANDARD

REQUIREMENTS FOR TAP CHANGERS - William Henning, Chairman The working group met on 10/24/05 with 17 members and 26 guests present. The working group chairman asked if anyone had information on any patents that may be related to the work of this working group. It was noted that no one present at the meeting expressed knowledge of patents related to our work. Next, minutes of the previous meeting in Jackson, MS were approved as written. There were two remaining agenda items: 1) revision of C57.131 2) development of an application guide.

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Regarding revision of C57.131, we are at the stage where we have conducted a WG survey that covered all the issues regarding changes to C57.131. We have tallied the results of the survey and used that tally to form the basis for each change in the document. Then we produced a draft document PC57.131/D1.0, 10/27/05. We distributed it to WG members and posted it on the WG web page. After discussion at the meeting, the working group believes the document is ready for a straw vote. The working group then moved its attention to the application guide. Annex E of C57.131 already contains some application information. A discussion took place on whether we should expand annex E with additional information or create a new separate document. There see to be advantages and disadvantages to both approaches. It was decided to proceed with the development of the text and to defer a decision on what to di with annex E. The working group chairman will create a topic outline for review by the WG and then writing assignments will be made. The meeting adjourned at 2:25 p.m. 7.6.1.5 WORKING GROUP FOR DEVELOPMENT OF PC57.140, GUIDE FOR THE

EVALUATION AND RECONDITIONING OF LIQUID IMMERSED POWER TRANSFORMERS - Rowland James, Chairman.

No minutes received. 7.6.1.6 IEEE C57.120-1991, IEEE LOSS EVALUATION GUIDE FOR POWER

TRANSFORMERS AND REACTORS REAFFIRMATION REPORT - Michael Lau

Number of Balloters � 131 Response rate � 75.6% Approval rate � 100% Abstain -- 6.1% 5 comments were received. 4 editorials; and 1 technical. The technical comment indicates the �text in Sub Clause 5.1 appears to be text from 1991, if not from a previous edition� � the current version is indeed a 1991 version. Editorial comments are: 1. Change the FOA / FOW cooling designation to current standard. 2. Delete reference to temperature change in core loss. 3. Revise some of the engineering economics jargons to more up-to-date

financial terms. 4. The References are all out of date and should be revised.

7.6.1.6.1 WORKING GROUP FOR DEVELOPMENT OF PC57.150, GUIDE FOR THE

TRANSPORTATION OF TRANSFORMERS AND REACTORS RATED 10,000 KVA OR LARGER –Greg Anderson, Chairman

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The Working Group for Transportation Issues Guide, PC57.150, met at 3:20 pm, Tuesday, October 25, 2005. There were 23 members present with 54 guests and 3 guests requesting membership in the WG. Those requesting membership were: Jane Ann Verner, Bill Boettger, Ed teNyenhuis

The IEEE Patent disclosure requirements were discussed and a request was made for disclosure of any patents that may be related to the work of the WG. There were no responses to the request for disclosure. Approval of minutes from the March meeting was requested. The minutes were approved. We will copy the portion on shipping from the Installation Guide to our document. It will also be left in the Installation Guide for now to prevent holding up progress on that guide with the present expectation that it will eventually reference the Transportation Guide so that the information will be in one place only. There will likely be more discussion on this required.

Assignments:

1. RFQ, Specification

Transportation relevant data: Assignment UCC vs Incoterms (see Installation Guide) Will take from the

Installation Guide Exact address, contacts, status of site (existing, under construction)

Users requested to send in spec requirements

2. Design Assignment Vertical / Longitudinal / Lateral direction Users requested

to send in spec requirements

3. Shipping Assignment Forwarder � Selecting subcontractors, checklist

Open

Barge and ocean vessels - Age of equipment, Registration, Lashing

Phil Sherman, Kipp Yule, Dave

Kirshner Others � Airplanes Open Oil Open

4. Arrival (Receipt) Inspection Assignment Electrical Tests - FRA (specify tests � transformer oil filled y/n, before after testing, with or without bushings)

Jane Ann Verner and Jerry Murphy

Mechanical Tests - Ratio, Winding resistance, dielectric Power Factor, Insulation Resistance, No load excitation at 60Hz and 110% rated voltage, Induced voltage test, and DGA

Jane Ann Verner and Jerry Murphy

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Don Chu will be asked for input to several of the sections. Tom Lundquist and Dave Wallach also volunteered to work on the specification portion. Roger Verdolin has also offered to help with several sections. Craig Swinderman will review and work on definitions. In general, good progress is continuing to be made on the document.

Meeting was adjourned at 4: pm. 7.6.1.7 WORKING GROUP FOR THE REVISION OF C57.93, INSTALLATION OF

LIQUID-FILLED TRANSFORMERS - Michael Lau, Chairman The Working Group for The Installation of Liquid-filled Transformers was called to order at 08:00 AM on Tuesday October 25, 2005. There were 35 attendees, 10 members, 3 requesting membership, and 22 guests. After introductions, the agenda for the meeting was reviewed, and the minutes, current draft of the guide, and this meetings presentation were distributed. Minutes from the March 15, 2005, meeting in Jackson, Mississippi, were reviewed and approved without comment. 1) IEEE patent policy was reviewed and the group was asked if there were any

disclosures. There were none. 2) A straw vote was conducted among the Power Transformer subcommittee members

and many editorial comments and some technical comments were received. The editorial comments have all been incorporated into Draft 9 and posted on the web. The technical comments were discussed during the meeting and consensus was obtained among the group on the following items.

3) The frequency for routine DGA sampling will be revised to be a minimum of once

annually and more frequently if required and at the discretion of the users for more important and higher rating units.

4) A sentence will be added in the Introduction of the Guide to advise the users that it

would be desirable to engage the experts of the manufacturer during the initial installation and on problems over the serviceable life of the transformer.

5) The term Swept Frequency Response Analysis (SFRA) will be revised to a more

generic term � Frequency Response Analysis (FRA). 6) The Group recommended no changes to the Table on Level of Impacts for

discussion in Clause 4.3.1. 7) The Group also recommended no changes to Clause 4.8.2 with respect to vacuum

level and no changes to the recommended filling rate of 12.5mm per minute. 8) It has been decided to retain the sections on Shipping and Receiving until such time

the new Transportation is available. 9) Ewald Schweiger, Paulette Payne Powell, and Jane Verner volunteered to review the

contents of the Annex, Figures and Appendix ( sources and examples ). The meeting adjourned at 09:30 am.

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7.6.1.8 TASK FORCE FOR FUNCTIONAL LIFE TESTS OF DE-ENERGIZED TAP CHANGERS – Phil Hopkinson, Chairman

The Task Force met on Tuesday, October 25 at 9:30 AM. There were 115 members and guests in attendance. Following introductions, the minutes from the March 15, 2005 Jackson meeting was approved as submitted. The chairman then quickly reviewed the IEEE patent disclosure requirements. No guests or members present indicated knowledge of any patent activity applicable to our work at this meeting. The Task Force then began discussing the topics of old business, as follows: All material associated with the task force has been placed on the DETC website. This includes the original technical paper created by Phil Hopkinson. A new draft of this paper is in the process of being drawn up. It will include the latest tests that were performed using FR3, a natural ester fluid, as the medium. FR3 fluid versus mineral oil seems to add stability to sets of contacts during the life cycle testing. Tests were reviewed with the task force. A panel session set for the IEEE T&D conference in New Orleans regarding the testing of de-energized tap changers with various contact material arrangements in FR3 was delayed to the cancellation of the conference. Phil provided a description of the functional life cycle tests that he would like to see included in the IEC and IEEE tap changer standards. Phil attended the IEC TC14 Power Transformer meeting in South Africa. It was stated that the tap changer-working group would plan to initiate revising the present 60214-1 standard in 2007. Super temperature calculations of various contact material arrangements were reviewed, with acknowledged corrections from the vigilant work of Dr. Axel Kramer (Reinhausen). Formula was correct but calculations needed revised due to an error found. Axel Kramer presented a status of the life cycle testing being done by Reinhausen. Slides presented are available for review, and will be posted on the Working Group site. Central Moloney presented a status of the life cycle testing that they have performed on their small no load switches using a tin plating over a copper contact matching up with a copper contact. Similar results to tests performed by Quality switch were found. Slides presented are available for review. Additional testing on a 100-amp switch that uses tin plated copper on both sets of contacts will be performed. Results of these tests will be provided at the next meeting, Spring 2006. Phil Hopkinson asked for volunteers to co-author an update of the technical paper he created on the subject of life cycle testing of de-energized tap changers. This would show support from the tap changer development industry and assist in getting a life cycle tests into the IEC and IEEE tap changer standards. Cooper Power Systems, Central Moloney, Reinhausen, ABB and Quality Switch have agreed to assist in this endeavor. This draft will be available for review by the next meeting, Spring 2006

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The meeting adjourned at 10:45 AM. 7.6.1.9 WORKING GROUP FOR REVISION OF C57.135, GUIDE FOR THE

APPLICATION, SPECIFICATION AND TESTING OF PHASE-SHIFTING TRANSFORMERS – Jim McIver, Chairman

Chairman Jim McIver also served as acting secretary (due to Joe Watson�s absence during hurricane Wilma.).

• 10 members, 15 guests were in attendance with 6 requests for membership. • Patent issue was mentioned and no items were brought forward. • Approval of minutes from the prior meeting will be via electronic inquiry. • Status of items for WG review and comment:

o Pdf copy of present guide posted on TC website for WG reference o Joe Watson has re-created original figures of Sect. 4 (McIver will

distribute electronically to TF members for reformatting/revision.) o To date, few comments received requesting editorial revisions (McIver will

solicit additional comments from Pwr Transformer Sub-committee.) • The structure of anticipated revisions and necessary TFs was re-affirmed:

o TF for Section 4 (Theory) Walter Seitlinger (TF chair) Gustav Preininger (corresponding member) Bipin Patel Tim Raymond

o TF for Section 5 (Service Conditions) & Section 7 (Construction) Jim McIver (TF chair) Bipin Patel Bob Veitch.

• A PAR to officially initiate the revision process is being submitted by the chair. McIver will attempt to �fast-track� the PAR for NesCom approval before year-end.

• The PST guide is now designated as a dual Logo guide with IEC; the first such TC standard to require this interface with IEC. PAR approval will require close work with the SA staff to insure the new dual revision process is successful.

• The meeting was adjourned at 11:30 AM. 7.6.1.10 WORKING GROUP FOR REVISION OF C57.12.10, STANDARD

REQUIREMENTS FOR LIQUID IMMERSED POWER TRANSFORMERS - Javier Arteaga, Chairman

The WG met on October 25, 2005 from 1:45 PM to 3:00 PM. In attendance were 14 members and 7 guests. Minutes of the previous meeting in the spring of 2005 where approved as written. Draft 2.0 of this standard was reviewed during this session. Standard transformer Kilovolt-ampere ratings in table 1 will be expanded to include single phase transformers and table 2 for typical transformer Kilovolt-ampere ratings will be modified accordingly. Standard impedances for transformers with BILs larger than 750 kV were discussed, indicating that the standard proposed values are to be used if the user does not specify this. The group decided to keep the values indicated in current draft 2 of document.

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The standard impedance values proposed for autotransformers as a function of its co-ratio was agreed with the addition of a note indicating that the impedance for these units will not be higher than the values indicated in table 4, which is only a function of the transformer high voltage BIL. A clarification will be made indicating that this is not an equivalent autotransformer impedance. In addition, the autotransformer co-ratio will defined in this section of the standard. Current standard covers the standard construction for load tap changers (LTC) with the regulating winding located in the low voltage winding to regulate this winding. It was agree to add a section to recognize the use of LTC in the HV winding to regulate either the low voltage or the high voltage windings. This section will include the effects of this application in the performance characteristics of the transformer as impedance variation, sound level, variation on core losses, and others in order to guide the user in this application. Saurabh Ghosh and Stephen Scroeder will outline this section. With no more time for discussions the meeting adjourned. 7.6.1.11 IEEE STD 638-1992, IEEE STANDARD FOR QUALIFICATION OF CLASS

1E TRANSFORMERS FOR NUCLEAR POWER GENERATING STATIONS REAFFIRMATION – Tom Lundquist, Ballot Designee

Shawn Galbraith and Craig Swinderman volunteered to be WG chair for the revision of this document. 7.6.1.12 C57.116 Reaffirmation Report – Tim Raymond Reaffirmation ballot was sent out early Fall, 2005, only one negative editorial comment was received. Submitted to IEEE for approval, waiting for response on approval status. 7.6.2 OLD BUSINESS A. REAFFIRMAION C57.117-1986 (R1998) (PE/TR) IEEE Guide for Reporting Failure

Data for Power Transformers and Shunt Reactors on Electric Utility Power Systems � Reaffirmation of C57.117-1986 (R1998) was approved by the IEEE-SA Standards Board on 10 May 2005.

B. REAFFIRMATION C57.125-1991 (R1998) (PE/TR) IEEE Guide for Failure

Investigation, Documentation, and Analysis for Power Transformers and Shunt Reactors � Reaffirmation of C57.125-19991 (R1998) was approved by the IEEE-SA Standards Board on 10 May 2005.

7.6.3 NEW BUSINESS Discussion on transformer tank design to limit risk of tank rupture due to internal faults. Voted to establish task force to address this, Peter Zhao volunteered as Chairman to lead the newly formed task force to investigate tank rupture. The meeting adjourned at 2:45 pm.

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7.7 Underground Transformers and Network Protectors – Carl G. Niemann

Meeting Minutes – Memphis, Tennessee

7.7.1 Introduction/Attendance The Underground Transformers and Network Protectors Subcommittee met on Wednesday, October 26, 2005, in the Grand Salon D room of the Peabody Hotel at 9:30 AM with 10 members and 7 guests present.

7.7.2 Approval of Minutes The minutes of the March 16, 2005 meeting in Jackson, Mississippi were approved as submitted.

7.7.3 Membership Membership stands at 16 members. Franklin Lu and Nelson Alfonso were accepted as members.

7.7.4 Chairman’s Remarks The following Administrative Subcommittee notes were reported to the

subcommittee:

• The attendance statistics and future meeting locations • Group membership type of �Corresponding Member� has been added to the AM

system • Anyone wishing to do a presentation should see Kent Haggerty

7.7.5 Working Group Reports Underground Single Phase Transformers (C57.12.23) – A. Traut, Chairman

1. There were 13 members, 6 guests, and 1 guests requesting membership in attendance. With the addition of these new members the total membership of the WG now stands at 25.

2. The chair requested disclosure of any patents that might impact this standard. There were no patents disclosed at this meeting.

3. The minutes of the March 2005 meeting in Jackson were approved as submitted.

4. The WG agreed to make the following changes to Draft 3 of the document. A. Add 85C reference temperature for load loss and impedance and

20C reference temperature for no-load loss. B. Revise the paragraph regarding pressure relief provisions to include

a plug to provide for manual pressure relief and provide for an optional automatic pressure relief valve. Alan Traut will propose this revision at the next meeting.

C. Revise the nameplate requirements to require a stainless steel nameplate and non-corrosive hardware.

D. Add the weight in pounds and the liquid volume in gallons to the nameplate requirements. These units were specifically chosen to address safety concerns.

5. The next meeting will be in Costa Mesa, CA in March 2005.

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Three-Phase Underground-Type Transformers (C57.12.24) – Giuseppe Termini, Chairman

1. The meeting was called to order by the Chairman at 8:00AM on Monday, October 24, 2005 in the Forest Room of the Peabody Memphis Hotel in Memphis, Tennessee.

2. Introductions were made. The meeting was attended by 12 members and 11 guests. One guest requested membership.

3. The Chairman opened the meeting by asking if anyone in the Working Group knew or had knowledge of any existing or pending patents that may affect the work on this standard. All responses were negative.

4. The Meeting Minutes from the previous meeting in Jackson, MS were reviewed and approved.

5. The rest of the meeting consisted of a review of Sections 1 through 7.6 of the Draft Standard. A. The Scope and Purpose of the standard were approved with a minor

change to the Scope. The word �continuously� will be added to the last sentence of the Scope before the word �submerged�. A discussion about changing the Scope to increase the KVA transformer rating above 3750 took place. The Working Group agreed that 3750 will be the maximum KVA rating covered by this standard.

B. The references, if not cited in the body of the document, will be removed from Section 2 and placed in a Bibliography.

C. In Section 5.1 the cooling class was removed. This section will reference the appropriate IEEE Standard(s) for cooling requirements.

D. A suggestion to include a 600Y secondary voltage rating in Table 1 was made. The Working Group agreed that such a voltage is rarely used and will not be included in Table 1.

E. The Working Group agreed that the impedances as shown in Table 3 should be reviewed for the maximum fault current available on the secondary side of the transformer. A task force made up by Dan Mulkey, Giuseppe Termini and John Sullivan will review this table and make appropriate recommendations.

F. In Section 7.1 the references to other sections of the standard will be removed. A suggestion was made to include the dimensions for a 3000 KVA tank in the tables of Figure 1. Dinesh Sankarakurup and Brian Klaponski agreed to provide the tank dimensions so that the tables can be updated. Brian Klopanski suggested to include 316 stainless steel to the material option for the parking stands. He also suggested to add the letter �L� next to 304 and 316 to indicate low carbon content. This addition may eliminate the need to specified the 0.05% maximum carbon content, the Chairman agreed to follow up this item.

G. Figure 2 will be revised to change the description of the primary and secondary bushings to be consistent with the rest of the standard. The number subscript for the bushing markings in Note 1 of Figure 1 will be removed from the letter �B�.

H. The metric dimension for the hole size of the spade connectors shown in Figures 4 (a), (b), (c) and (d) will be added. The need to include a twelve (12) hole spade connector for the 3750 KVA transformer size in Figure 4 was brought up. The Chairman will work

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with Dinesh Sankarakurup and Brian Klaponski to make a recommendation.

I. The total weight in pounds (lbs) and kilograms (kg) and the volume in gallons (gal) will be added to the nameplate requirements for safety reasons.

6. The meeting was adjourned at 9:20 AM.

Liquid Filled Secondary Network Transformers (C57.12.40) – B. Klaponski, Chairman

7. The WG met on Monday, October 24, 2005 at 09:30am with 12 members and 12 guests.

8. The chairman reviewed the patent legal issue and asked whether there were any patents or patents pending that would affect the WG or standard. None were identified.

9. The minutes of the March 14, 2004 meeting in Jackson, MS were approved.

10. Chairman gave a brief summary of what has transpired regarding this document and the balloting process. He expressed frustration that the WG has been working 4 years on a task that should have taken 1 year. A. WG was attempting to just fix errors on the document and republish.

Encountered some stumbling blocks, including Metrification. B. Most recent ballot closed on 1/27/05. Comments indicating many

required changes received from Mr. Frysinger, Vice Chairman of SCC14.

C. WG reviewed ballot comments at the Jackson, MS meeting. WG made changes to standard with understanding that the Transformer Committee would resolve issues with Mr. Frysinger. The WG understanding was that the standard would then need to go thru a recirculation ballot.

D. WG Chairman replied to Mr. Frysinger after the Jackson meeting regarding his recommended changes, providing feedback that most changes were not needed as the existing document text was �industry standard transformer terminology�. In early October, WG Chairman received further comments from Mr. Frysinger, who apparently was unaware of agreement and resolution of issues with Mr. Barrow.

E. WG Chairman expressed concern that the author of this reply clearly did not understand the terminology and equipment which falls under the standard. He stated that the WG is responsible for updating technical industry standards, and is not responsible for educating those who do not understand our equipment.

F. WG Chairman has indicated to the Transformer Committee leadership, through the Rep. to Standards Coordinating, that the WG is prepared to reply to this individual but will do so in a rather terse tone as the WG believes this was totally inappropriate that they received this type of reply. We are trying to address technical issues and instead we have to put up with this type of bureaucratic red tape from an individual like this.

11. Discussion then followed on next steps we should take on this matter. WG understanding is that we have a responsibility to respond to Mr. Frysinger, but we are not required to address his issues. There was a suggestion to respond and cite relevant standards. Chairman responded

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that we should not have to give him a detailed response, basically educating someone on transformer issues.

12. S. Vogel, IEEE-SA, stated she sees two issues facing the WG. Firstly, having only one negative vote, we can go forward, and procedures require we address it and recirculate to group. Secondly, the SCC14 individual response issue is unfortunate, and we are not the only group experiencing this. The SCC14 response is not actually a vote, but rather a comment. It does not require rigorous rebuttal. The IEEE staff has received numerous complaints regarding this individual from groups like ours and is planning to address this with SCC14 leadership.

13. After further discussion by IEEE staff on this issue, it was felt that the best course of action would be to proceed with recirculation ballot.

14. Motion made by S. Schroeder, to disregard the comments made by Mr. Frysinger, as they are of no practical value given the common understanding of our industry. Seconded by L. Dix. Approved unanimously.

15. Motion made by I. Hussain, to proceed with recirculation ballot. Seconded by S. Schroeder. Approved unanimously, subject to further discussion.

16. Chairman commented that WG should not take any further action regarding SCC14 response and recirculation ballot until guidance is received from the Transformer Committee leadership on this issue. Time frame for IEEE to take action and resolve this issue was discussed. S. Vogel will schedule a conference call within the next two weeks to review with IEEE Senior Management and resolve.

17. Motion made by C. Niemann to advise the Transformer Committee leadership that it be duly noted that our document contains technical errors and the IEEE may be exposed legally due to this fact. Further that that the Underground Transformers and Network Protectors Subcommittee Chairman appeal to and apply pressure to the Transformer Committee leadership to resolve this issue quickly because our standard is in full stop as to recirculation ballot. Further, that we will copy this motion directly the IEEE Standards Association, via S. Vogel due to the liability issue. Seconded by L. Dix. Approved unanimously.

18. The meeting was adjourned at 10:40am with the next meeting in Costa Mesa, CA.

Secondary Network Protectors (C57.12.44) – D.H. Mulkey, Chairman

19. The WG met on Monday, March 14, 2005, with 7 members and 1 guest present.

20. Minutes of the spring meeting in Jackson, Mississippi were approved as submitted.

21. Disclosure of any relevant patents was requested; there were none disclosed

22. The chair informed the working group that the draft standard passed on the first recirculation and was submitted to Revcom. IEEE staff required the fuse manufacturers and numbers be removed from the annex. This was an editorial change. The corrections to the metric conversion rounding as required by SC14 were, however, deemed technical and required another recirculation. A poll of the working group was conducted between meetings and it was decided to have the chair make the changes and a 2nd recirculation was conducted

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23. The second recirculation was successful and the document has been submitted to Revcom for approval at its December 6, 2005 meeting.

24. The working group was asked to think about what, if any, future revisions are needed

25. The meeting was adjourned at 2:15 PM.

Ventilated Dry-Type Network Transformers (C57.12.57) – A.L. Robinson, Chairman 26. The WG was not scheduled to meet. 27. The chair will submit the draft documents to either Carl Niemann or Dan

Mulkey

7.7.6 Old Business 28. Dave Blew, Brian Klaponski, and Carl Niemann prepared a

recommendation to be presented to the Transformers Committee regarding the problems with the comments from SC 14.

29. Brian Klaponski made the comment that the increased IEEE staff representation, the new Word template, the archiving of the current standards and their graphics in their original format, and the new My Ballot system were all positive steps and greatly appreciated. The committee agreed.

7.7.7 Future Meetings The location and dates for future meetings are as follows: • March 19-23, 2006 Hilton, Costa Mesa, California • Oct 21-26, 2006 Delta Center-Ville, Montreal, Canada • March 11-15, 2007 possibly in Phoenix • Fall 2008 is being planned for Porta, Portugal

7.7.8 The Subcommittee adjourned at 10:30 AM. 7.8 Audible Sound and Vibration – J.L. Puri 7.9 Bushings Subcommittee – Fred Elliott, Chair 7.9.1 Introduction/Attendance Pritpal Singh - Acting Chair opened the meeting at 3:00 PM and welcomed the members and guests. There were 56 attendees with 21 members and 35 guests present. Six guests requested membership to the Bushing Subcommittee. IEEE patent policy was addressed and no patent conflicts were reported. 7.9.2 Approval of Minutes of Last Meeting The minutes of last meeting in Jackson, MS were approved as written.

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7.9.3 Chairman's Remarks Peter Zhao � Secretary attended the Administrative Subcommittee meeting on Sunday afternoon on behalf of the Chair. He passed the following remarks to the attendees during the Bushing Subcommittee meeting; • 2006 Spring Transformer Committee meeting will be held on March 19-23 in

Hilton Costa Mesa, California, hosted by Bill Chiu and SCE. Hotel on-line reservation is available. Technical tour ( Sylmar HVDC Converter Station) will be scheduled Sunday Morning, March 19,06.

• Four IEEE-SA personnel attended the meeting in searching for future service improvement. The members were encouraged to provide their concerns and suggestions to the IEEE-SA, and they were welcome to participate in Monday Lunch Mtg � Standards Development Process since some changes or improvement have been made for the process.

• For PAR extension approval, the explanation and time schedule would be needed.

• The Committee WiFi connection was available for the members, contacting Craig Stiegemeier if any questions.

7.9.4 Working Group (WG) and Task Force (TF) Reports 7.9.4.1 WG - Revision of C57.19.00 - Keith Ellis, Chair The WG has been finished for now and the Standard is ready for publication. No meeting was arranged. 7.9.4.2 TF - Revision of C57.19.100 – Tommy Spitzer, Chair The Chair called the meeting to order on Oct. 25, 2005 at 11:00 AM with 21 members and 31 guests, 6 requested for membership. The members and guests were introduced. Bob Hartgrove resigned from the Secretary position and Charlie Caruso agreed to take over. There were no patent disclosures. The minutes of the Jackson meeting were approved as written. Under old business, the difference between draw rods and draw leads were discussed. It was agreed that a generic definition would be developed, which will be acceptable to the manufacturers and will include an explanation as to how current is carried for each application. Under new business, it was determined that an additional section is needed to explain what issues and hazards can be encountered when replacing obsolete bushings with newer designs. It was also suggested that a checklist should be developed to show what information would be needed by a manufacturer to provide a suitable replacement.

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It was also suggested that we check for co-ordination with IEC even though this guide only applies to ANSI bushings. The TF has made a considerable progress. The proposed schedule is to have a PAR approved and draft 1 completed before the next meeting. The meeting was adjourned at 11:45 am. 7.9.4.3 TF – Bulk Bushings – Bob Hartgrove, Chair No meeting / report. 7.9.4.4 C57.19.03 Corrigendum 1 – DC Bushing Standard – Fred Elliott, Chair There was no TF meeting but Chair submitted the following information through e-mail; • The re-circulation ballot, which closed on October 14, 2005, yielded 75% returns

with 100% affirmative votes. • The project was submitted to the Standards Board on October 17, 2005. Fred has

conveyed his Thanks to John Graham, Pierre Riffon, and Lars-Erik Juhlin for their participation.

7.9.4.5 IEC Bushing Standards Activity - John Graham of Trench Ltd., UK John Graham reported as following; IEC BUSHING STANDARDISATION WORK Within IEC, standardisation of bushings is covered by Technical Committee TC36: Insulators, Subcommittee SC36A: Insulated Bushings. Subcommittee officers are: Chairman: Lars Johansson, ABB, Sweden. Secretary: Alberto Sironi, CESI, Italy. The last meeting of SC36A was held at the IEC General Meeting in Rosslyn, Virginia, on December 9th 2004. The next meeting will be Berlin, Germany in October 2006. There is one active working group: SC36A MT5: IEC 60137: Insulated bushings for alternating voltages above 1kV. Project Leader: John Graham, Trench-UK. Although IEC 60137 Edition 5 was just published in August 2003 due to adverse comments received from the IEC transformer committee TC14 work was immediately restarted. A Committee Draft (CD) was distributed for comment by National Committees in July 2004 and was discussed in Rosslyn. Most comments were accepted, but progress has been slow during 2005. As reported previously TC14 would prefer that all dielectric tests on to the transformer have been applied to the bushing, with a margin of 10%. Bushing manufacturers consider this procedure has no technical of economic justification and if the margin is

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required then bushings of a higher rating should be purchased. A compromise has been reached in the MT to have impulse testing as routine on all transformer bushings 245kV and above and extended type test below this level. It is expected that a Committee Draft for Vote (CDV) will be issued at the end of October 2005 with a target Final Draft International Standard (FDIS) in May 2006. Other Work SC36A MT67: IEC 61464: Dissolved gas analysis of bushings. This new maintenance team will be set up to review the document published in 1998. This gives information on interpretation of DGA specifically for bushings. There have been issues with TC10 on the scope and whether this work should be included in IEC60599. No work yet. SC36A MT7: IEC 61463: Seismic qualification of bushings. This new maintenance team will be set up to review the document published in 1997. This offers a more simplified approach to qualification than IEEE 693, allowing static calculation. No work yet. CENELEC TC36A WG4 prTS50458: Capacitance graded outdoor bushings 52 up to 420kV for oil filled transformers CENELEC is the European parallel committee for IEC and produces standards or harmonisation document for use in the European Community. This document gives dimensional standardisation for transformer bushings. A Final Draft was circulated in July 2005 and comments submitted at the end of September. The result of the vote is not yet known. 7.9.5 Old Business • Reaffirmation of C57.19.01� Bushing Performance Characteristics and Dimensional

STD Chair Fred Elliot submitted the following information through Email. The Reaffirmation Ballot status as of October 17, 2005 indicated the following:

81 % returned 94 % affirmative

The ballot closed on October 23, 2005. 7.9.6 New Business Discussion of Future Activity on the Revision of C57.19.01 � 2000 • The negative ballots received during the reaffirmation process of C5719.01 were

discussed. Two of these pertain to reference to 1991 standard for dimensional information on ratings withdrawn form 2000 standard. This will be discussed with the standards people and see how we can resolve this issue.

• The other three pertain to dropping of 25, 115, and 161 kV ratings.

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• The acting chair explained the background, benefits, and the revision process. Also, it was mentioned that technical papers were written and a presentation was made at the Doble Client�s for educating the users and manufacturers

• A suggestion was made by Loren Wagenaar to consider publishing a similar paper in the T & D magazine. This appeared to be a good idea. We will ask the original contributors for their interest.

• The members and guests present did not show any interest in bringing the obsolete ratings back into the standard.

• It is expected that further discussions will take place as more comments are received.

No other new business was brought up at the meeting. 7.9.7 Technical Papers No activity was reported for this mtg. 7.9.8 Adjournment The meeting was adjourned at 3:45 PM. Minutes submitted respectively by, Peter D. Zhao Secretary Bushing Subcommittee 7.10 Dry Type Transformers SC ChairMAN C. W. Johnson, Jr.

Introductions and Approval of Minutes

The Dry Type Transformer Subcommittee met in Memphis, TN on Wednesday October 26, 2005 with 17 members and 7 guests present; 1 guest requested membership and 1 guest requested corresponding membership. Introductions were made and the attendance roster was circulated. Minutes from the March 16, 2005 Jackson MS meeting were reviewed and approved.

The chair reminded the attendees that the minutes posted after each meeting were unapproved and would not be approved until the next meeting.

7.10.1 Working Group/Task Force Reports

The next order of business was the presentation of the reports of the various working groups and task forces. See the following sections for the individual reports:

7.10.1.1 WG Dry Type Test Code C57.12.91 Chairman Derek Foster

1 The working group met at 3:15 pm with 14 members and 7 guests present.

2 There were no comments regarding the minutes from the March 15, 2005 meeting in Jackson.

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3 The Chairman asked if anyone present had any information regarding patent issues which may affect the work of the group. No replies were received.

4 Old Business

The Chairman informed the Working Group that the PAR for amendment of the standard was approved in June 2005. The title of the standard will be extended to �IEEE Standard Test Code for Dry-Type Distribution and Power Transformers � Amendment 1.

Four sections of the standard are included in the PAR:

Section 5 Resistance measurements

Section 10 Dielectric tests

Section 11 Temperature test

Section 13 Audible sound level measurements

Three of these four sections were the subject of negative comments during the last ballot of the standard and these negative comments will be dealt with during the review process.

Section 5 of the liquid filled transformer test standard, on resistance measurements, is also being reviewed at this time and proposed revised wording for this standard has already been prepared. The Chairman will obtain a copy of the proposed wording for circulation to all members of the working group. This may provide useful input during the review process.

The Chairman requested volunteers for task forces to review each of the four sections of the standard included in the PAR. Two volunteers came forward for each of the four sections, as follows:

Resistance measurements Carl Bush, Chuck Johnson

Dielectric tests Marcel Fortin, Arthur Molden

Temperature test Tim Lewis, Martin Navarro

Audible sound level test Tim Lewis, Dhiru Patel

It is intended that the proposed amendments to the four sections will be available for further discussion at the next meeting.

A discussion was held regarding clause 10.1.5.4. This clause states �The sequence of tests shall be impulse tests (when required) followed by the low-frequency voltage tests�. One member of the working group had requested that a detailed test sequence for dielectric tests be provided to include induced voltage test and partial discharge test. It was agreed to extend clause 10.1.5.4 to include a statement regarding these tests and the extended clause will be included in the review of the section on dielectric tests. There being no new business, the meeting was adjourned at 4:00 pm.

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7.10.1.2 WG Dry Type Thermal Evaluation C57.12.56/60 Co-Chairman Roger Wicks The working group met in Memphis, TN at the Peabody Hotel at 1:45 PM on Monday, October 24, 2005 with 11 members and 12 guests present. Attendees introduced themselves and signed a roster. One guest requested membership in the working group. The Vice-Chair reviewed the minutes from the last meeting which were approved as read. The chair reviewed the patent documents for our meeting, and no patent related issues were noted for the work of this working group. The chair reviewed the action items from the last meeting related to simplified definitions, aging models, and test methods. The vice-chair also expressed his apology for delay in issuing the working group meetings, though it was noted that they were incorporated in the subcommittee minutes which were issued a while back. It was agreed that going forward the minutes would be issued fairly quickly and then reissued prior to the meeting as a reminder. Due to the late nature in issuing the meeting, little had been accomplished related to the action items from the last meeting. The working group did receive input from the Chair (Dick Provost) related to a new model configuration for cast resin units, which led to a very healthy exchange of information. Jeewan noted he had submitted input as well, but the vice-chair was not prepared to discuss it (not sure if he got it). Jeewan will resend to the vice-chair.

There was a significant amount of discussion related to Dick Provost�s model presentation regarding cast resin transformers. Contributions were provided by many, including Jeewan Puri, Tony Jonnatti, Chuck Johnson, Rick Marek, Martin Navarro, and Carl Bush to name a few. In summary, some of the key points raised:

How should the model be constructed? Do we need to have turn-to-turn testing and or do we need to have section-to-section testing as well? This lead to a discussion for this type of model (foil wound coil) whether all of the failures are one method or another (impulse or double induced; turn to turn or section to section). Comments suggested that the aging methodology should be able to test all potential modes of failure, since going into the aging program one cannot always assume where the weak link. This led to a discussion about the typical sequencing of the test, with a full coil being built first for electrical modeling (impulse and transient analysis) followed by models that takes into account the result of the modeling. Rick pointed out that you need to understand these electrical characteristics, since they set the limits for the future design rules for the family of units being tested.

Issues were raised regarding the aging of the coils (cracking, etc.) which may not happen at operating temperature, but occur during accelerated testing at high temperatures. Unfortunately, there isn�t a lot that can be done related to this effect. Tony raised the idea of using the initiation of PD as failure criteria, but the group agreed that this would be problematic, that the use of the electrical proof test as the failure criteria was a �real world� method.

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Martin pointed out that customers are requesting transformers with �180°C insulation� and he is not sure how to meet this requirement. He noted that there is an IEC test method that calls out the end of life as the amount of time until the unit has suffered a 3% weight loss vs. the initial weight. Many need to obtain this standard to compare to ours. Martin further noted an issue with how the dielectric test voltage is calculated in the test method. This led to a discussion about impulse vs. simulated impulse. This all the more reinforces the need to look at our test methods for both the coils and the models to insure they are correct per our current needs. The chair pointed out that C57.12.60 was written prior to any test experience, and with a number of test programs completed vs. this protocol, that it would be natural that adjustments should be made. One issue is how this information can be shared, since much of this work is proprietary to the few OEMs who have completed the work. No real action plan was set up after the end of the meeting, however the chair agreed to put together these notes from the meeting, circulate this minutes along with the past minutes, and solicit evaluations/ideas regarding the models and the aging. The chair also agreed to scan and send copies of a paper he received from Tony Jonnatti related to this work (in 1955) titled �Functional Life Evaluation of Group-2 Dry-Type Power Transformers�. It appears to be very directly related to the work of our working group. The chair, by copy of this set of minutes, requests all copied to look to see if they have any other papers of similar value to the working group. In specific there are some documents in the bibliography of the above paper which might be of value to the group.

Meeting adjourned at 3:05 PM.

7.10.1.3 Dry Type Reactor TF Chairman Richard Dudley The Dry-Type Reactors T.F. met in the Venetian Meeting Room of the Peabody Hotel in Memphis, Tennessee on Oct. 24, 2005 at 8:00 a.m. There were 10 members and 1 guest present. 1. The minutes of the Dry-Type Reactors T.F. meeting in Jackson were approved. NOTE: The minutes of the Memphis meeting of the T.F. will not be approved

until the meeting in Costa Mesa, California. 2. Due to an oversight of the Chairman, the IEEE patent policy was not reviewed.

However current work of the T.F. is either preliminary in nature (possible revisions to IEEE C57.16) or supportive input to the W.G. for the Revision of C57.32.

3. The remainder of the meeting was devoted to a review and discussion of Draft #3

of a proposed Annex E, for inclusion in the next revision of IEEE C57.16 on circuit breaker TRV issues and the application of series reactors. The following are the highlights.

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(i) Co-ordination with the IEEE Switchgear Committee was discussed as their input/agreement on the content etc. will be important to the successful ballot of the revision of IEEE C57.16. Pierre Riffon pointed out that Dennis Dufournet of the IEC Switchgear Committee who reviewed Draft #2 and provided input that is included in Draft #3 is also very active in the IEEE Switchgear Committee. Dennis Dufournet is Chairman of WG 35 of IEC SC 17A.

(ii) The focus of Annex E is on the switching of series reactors and possible

associated CB TRV issues; application of series reactors and especially current limiting reactors. Therefore Annex E should compliment rather than duplicate material in IEEE Switchgear Committee documents. This will be made clear to the IEEE Switchgear Committee when they are asked to formally review Annex E.

(iii) Pierre Riffon presented the clause from IEC 62271-100 which covers the

application of reactors and comments on TRV. Basically, available TRV mitigation measures are good and therefore no special CBs are required; medium voltage CBs up to 72.5 kV. Amendment 2 of IEC 62271-100 is now approved.

(iv) Annex E that is proposed for inclusion in the revision of C57.16 will be

limited in scope; TRV issues associated with the application of series reactors. CB TRV issues are largely confined to the application of current limiting reactors and under fault conditions.

(v) The text of the introduction �E.1� will be modified to state that the Annex

only covers CB�s applied with CLRs under fault conditions; TRV can then become significant.

(vi) In �E.2� �time delay� will be defined by referencing the appropriate IEEE

CB standard. (vii) Much of the IEC revision work referenced in �E.2� will be complete by the

time the revision of C57.16 is ready for ballot; text to be modified accordingly.

(viii) In Fig. �E.1� TRV envelope will be defined; RR and peak voltage. (ix) �E.3�, �E.4�, �E.5� and �E.6� are okay as drafted. (x) In �E.7� example calculations are presented. In Fig. �E.2� the CLR is

located ahead of the CB to reduce the cost of the CB; lowest fault duty. If the CLR is located after the CB then a lower fault and duty rated CB cannot be used.

(xi) If cable is used to connect the reactor (CLR) to the CB the cable

capacitance to ground could be sufficient so that there is no CB TRV problem. If capacitance mitigation is required, the best solution is a capacitor across the reactor.

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(xii) RFD will work with P. Riffon to pass the next draft (Draft #4) of Annex E to the IEEE Switchgear Committee for formal comment/input.

(xiii) T.F. members are requested to provide input re other draft proposals for

inclusion in the revision of IEEE C57.16. (xiv) T.F. members were asked if there are other revision opportunities for

IEEE C57.16. P. Riffon suggested that a drawing be included on the set up configuration for carrying out a short circuit test on 3 phase stacked reactors to be used.

The meeting adjourned at 9:15 a.m.

7.10.1.4 WG Dry Type General Requirements C57.12.01 Chairman John Sullivan The working group met in the Hernando Desoto meeting room of The Peabody Memphis in Memphis, Tennessee. Chairman John Sullivan called the meeting to order at 9:30 AM on Tuesday October 25, 2005. The meeting was convened with ten (10) members and five (5) guests present. One (1) guest requested membership. Introductions were made and the minutes of the Jackson, Mississippi meeting were approved. The first order of business was to show the slides on patents and inappropriate topics and ask the members if they knew of any patents or pending patents that apply to the contents of the C57.12.01 standard. No one knew of any patents that pertained to C57.12.01. PC57.12.01 has been submitted to RevCom. The next order of business was to present balloting results for the revision of C57.12.01. Balloting took place with an initial ballot and two recirculation ballots. The second recirculation ballot is detailed below. Response to the 2nd recirculation ballot:

• 129 eligible people in this ballot group • 95 affirmative votes • 7 negative votes with comments • 1 negative votes without comments • 6 abstention votes • 6% abstention • 109 votes received • 84% returned • 93% affirmative 102 votes

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Ballot group breakdown � recirculation two

• Classification Yes No Abs UR Total • General Interest 48 1 4 10 63 • Producer 16 3 0 3 22 • User 31 4 2 7 44 • Total 95 8 6 20 129

The following is a summary of comments from the second recirculation. Comments Recirculation 2

• 6 Editorial • 1 General SCC14 Coordination • 7 Technical associated with Un-resolvable negative ballots

Unresolved Technical Comments - R2

• Table 5 - 5 • Table 6 - Partial discharge 2

All comments from recirculation two were discussed. In addition comments from Marcel Fortin were discussed and as a result three task forces were formed. The negative ballots received involved three items: Table 5, the partial discharge clause and the short circuit clause. After discussions the working group decided to form three task forces to review these items. The task forces are as follows: Task force to review Table 5: Members are Carl Bush, Chuck Johnson, Dhiru Patel and John Sullivan Task force to review partial discharge:

Members are Marcel Fortin, Carl Bush, Chuck Johnson, Anthony Jonnatti and John Sullivan

Task force to review the short circuit clause: Members are Marcel Fortin, Dhiru Patel, Derek Foster and John Sullivan

The task forces are charged with the responsibility to review the comments and the respective clauses within the standard and present their recommendations to the working group. The working group chair is a member of the three task forces and will expedite organization and facilitate action by the task forces. There being no old business or new business presented, the meeting was adjourned at 10:45 AM.

7.10.2 New Business

1 The chair discussed four (4) ANSI documents (C57.12.50, C57.12.51, C57.12.52, and C57.12.55) whose copyright was transferred from NEMA to the IEEE Transformers Committee. The status of the documents remains in flux as we have no information on how to have the documents approved as IEEE standards. The SC chairman will request support from the IEEE Staff and Bill

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Chiu on how we should proceed.

2 The chair announced that two standards were due for reaffirmation in 2005: C57.134 �IEEE Guide for Determination of Hottest Spot Temperature in Dry Type Transformers� and C57.94 �IEEE Recommended Practice for Installation, Application, Operation, and Maintenance of Dry Type General Purpose Distribution and Power Transformers. Tim Lewis agreed to serve as the ballot designee for C57.94, and Paulette Powell agreed to serve as the ballot designee for C57.134. The chair will serve as the alternate ballot designee for each document. The chair asked all interested members to sign up for the ballot pool for each document.

3 There being no further business, the subcommittee meeting adjourned at 2:45 PM.

7.11 Distribution Transformers Subcommittee – J.E. (Ed) Smith The Distribution Transformer Subcommittee has a total of 14 Active Working Groups, 9 of those working Groups meet in Memphis. Subcommittee Meeting Wednesday October 26, 2005 at 3:00pm 39 Members 11 Guests 50 TOTAL

7.11.1 Chair's Remarks & Announcements: Review of Administrative Committee meeting highlights

• Future Meetings • New Members • Transformer Standards Activity • A request for patent disclosure concerns was made with none being indicated. • The Unapproved Jackson minutes were approved with no corrections.

Special Working Group Activity Those Working Groups that met in Memphis along with the minutes of each are as follows. . . Six of these standards are currently in the balloting process or just completed the balloting process with two others to be balloted in the near future 7.11.2 Working Group Reports 7.11.2.1 C57.12.20 Overhead Distribution Transformers (Alan Wilks & Tommy Cooper Co Chairs ([email protected] & [email protected]) PAR Status: Current PAR Expiration Date: 12/31/ 2005 Current Standard Date: 1999 Current Draft Being Worked On: 10d Dated 03/05 Meeting Time: 09:30am, Monday, October 24, 2005 Attendance: 39 Total 20 Members

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19 Guests 1 Request for membership Issues, Remarks & Announcements: Alan Wilks called the WG C57.12.20 meeting to order at 9:30 , introductions were made and rosters were circulated. The minutes of the spring 05 meeting in Jackson were reviewed and approved with one correction. Alan then reminded everyone of the IEEE policy on patents and none were declared. Old Business: Alan then recommended that 4 members that had not signed up for the AM system and his recommendation passed. The update on the Dielectric Test paragraph for single bushing transformers with the high voltage terminal permanently grounded has been permanently moved to the Sub Committee for Dielectric Tests. The re-circulation ballot status was discussed Alan then reviewed the proof copy of the C57.12.20. First going over the recommendations from the editor, most of these were agreed to but Alan was to check with the editor on some of her proposed changes. Alan then went over some problems he had found page numbers and Figure number. Alan then went over problems printing 2 of the drawings and Stephen Shull informed us of the need to have special software to be able to print the drawings. Tommy then informed the group of our survey of PRD manufacturers that 4 of the 5 could support our proposed change to -40° to +120°C and 1 could support the 120° proposal. The WG decided that we first needed to find out the range of all of the gaskets used in the transformer. New Business: The proposal to look at the special materials called for in the Standard was dropped. Alan then informed us about the need to go for a new Par, this will be done during our spring 06 meeting. The meeting was adjourned at 10:40 am. 7.11.2.3 C57.12.38 Single-Phase Padmounted Distribution Transformers Combined C57.12.25 & C57.12.21 Ali Ghafourian & Ignacio Ares Co Chairs ([email protected] & [email protected]) PAR Status: Approved 12/08/1998 (For combining Standards C57.12.25 & C57.12.21) PAR expiration Date: TBD Current Standard Date: 1995 Current Draft Being Worked on: #05-2, Dated: March 2005 Meeting Time: 11:00am, Monday, October 24, 2005 Attendance: 41 Total 37 Members 4 Guests 0 Request for membership Issues, Remarks & Announcements: Introductions were made and roster was circulated. The IEEE Patent disclosure information was discussed and there were no patent noted that pertain to these standards. The unofficial minutes of the last meeting held in April, 2005 in Jackson, MS were approved with no corrections.

• A change was made to Figure 1a, changing the free clearance area above the parking stand from a solid to dotted line. In addition, a 1.25� dimension

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was added between the centerline of the parking stand slot to the bottom of clearance area or top of the parking stand.

• Ali noted that he checked to see if the 5.75� dimension from the parking stand to the top of the transformer could be reduced to4.5�. It cannot be reduced to 4.5� as the feed thru device will not fit in a 4.5� space. 5.5� is an absolute minimum for clearance. The dimension of 5.75� was confirmed to be correct and is the sum of 4.5� space plus the 1.25� of the parking stand dimension.

• Figure 1b was changed similarly, but the clearance required is 5� plus 1.25� of the parking stand, which equals 6.25�. This does not agree with the 5.75� shown on the front plate. Ali will check this out.

• Figure 2a and 2b were changed similar to Figure 1a. • The par for C57.12.38 was discussed and it will expire at the end of 2009.

Table 1 and 2 was changed to show �System Voltage� as required in the Jackson, MS meeting. It was recommended that delta loop feed transformers be dropped from the first issue of 12.38 and that delta loop be added in the next revision. After considerable discussion, it was agreed to exclude delta loop from the initial document. A revision to the PAR will be necessary, since delta loop is included in the current PAR

• It was noted that Table 2 was incorrect as the phase to ground voltage is wrong for the last two rows. The 8.3 KV�s should both be changed to 15.2 and 21.1 KV, respectively.

• It was decided to make these corrections and go out for ballot as soon as possible.

• There was discussion about the LV in the scope being 480 volts and below. It was decided to limit the scope to 240/120 as in the previous documents. This change will be included in the request for PAR revision.

The meeting adjourned at 12:00 noon. Respectively submitted, Alan Wilks C57.12.28, C57.12.29, C57.12.31 & C57.12.32 Represent Cabinet integrity Standards and are handled under one basic working group. General: The minutes from the March 15, 2005 meeting in Jackson, Mississippi were approved as submitted. A request was made for disclosure of any patents that may be related to the work of the WG, and there were no responses to the request for disclosure. 7.11.2.4 C57.12.28 Pad-Mounted Equipment Enclosure Integrity Bob Olen & Dan Mulkey Co Chairs ([email protected] & [email protected]) PAR Status: Approved PAR expiration Date: May 09, 2007 Current Standard Date: IEEE 2005 Current Draft Being Worked on: Meeting Time: October 25, 2005 Time: 8:00 AM Attendance: 45 Total

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27 Members 18 Guests 2 Guest Requesting Memberships Issues, Remarks & Announcements: C57.12.28 Standard for Pad-Mounted Equipment � Enclosure Integrity Status: Just published Publication has been completed and the document was issued on September 30, 2005 7.11.2.5 C57.12.29 Pad-Mounted Equipment Enclosure Integrity for Coastal Environments Bob Olen & Dan Mulkey Co Chairs ([email protected] & [email protected]) PAR Status: Approved by NES Com May 23, 2002 PAR expiration Date: May 09, 2007 Current Standard Date: ANSI/NEMA 1999 Current Draft Being Worked on: 1.5 Dated: December 2004 Meeting Time: October 25, 2005 Time: 8:00 AM Attendance: 45 Total 27 Members 18 Guests 2 Guest Requesting Memberships Issues, Remarks & Announcements: C57.12.29 Standard for Pad-Mounted Equipment � Enclosure Integrity for Coastal Environments Status: Being published The initial proof copy has been returned to the IEEE Publication Group with comments. Publication is currently scheduled by IEEE for November 10, 2005

7.11.2.2.6 C57.12.31 Pole Mounted Equipment Enclosure Integrity Bob Olen & Dan Mulkey Co Chairs ([email protected] & [email protected]) PAR Status: Approved by NESCOM N/A PAR expiration Date: N/A Current Standard Date: 2002 Published March 7, 2003 Current Draft Being Worked on: Dated : Meeting Time: October 25, 2005 Time: 8:00 AM Attendance: 45 Total 27 Members 18 Guests 2 Guest Requesting Memberships Issues, Remarks & Announcements: C57.12.31 Standard for Pole-Mounted Equipment � Enclosure Integrity Status: 2002 Standard Old Business: Needs English units moved back into text � Chairs will do first run Remove salt spray test Need to check order of Scope & Purpose New Business:

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PAR � will be submitted by February 17, 2006 to initiate working group activity Scope and purpose were revised to be as shown in the attachment The Salt Spray Test is to be removed following the .28 standard 7.11.2.7 C57.12.32 Submersible Equipment Enclosure Integrity Bob Olen & Dan Mulkey Co Chairs ([email protected] & [email protected]) PAR Status: Approved by NESCOM N/A PAR expiration Date: N/A Current Standard Date: 2002 Published March 7, 2003 Current Draft Being Worked on: Dated : Meeting Time: October 25, 2005 Time: 8:00 AM Attendance: 45 Total 27 Members 18 Guests 2 Guest Requesting Memberships Issues, Remarks & Announcements: C57.12.32 Standard for Submersible Equipment � Enclosure Integrity Status: 2002 Standard Old Business:

English units moved back into text Scope � change �(with exception of network protectors)� to �and network

protectors� Need to check order of Scope & Purpose

Will leave as is for now. It can either be reaffirmed or a PAR taken out by 2007 7.11.2.8 C57.12.XX Standard for Pole-Mounted Equipment – Enclosure Integrity for Coastal Environments Bob Olen & Dan Mulkey Co Chairs ([email protected] & [email protected]) PAR Status: NONE PAR expiration Date: N/A Current Standard Date: NONE Current Draft Being Worked on: NONE Dated : NONE Meeting Time: October 25, 2005 Time: 8:00 AM Attendance: 45 Total 27 Members 18 Guests 2 Guest Requesting Memberships Issues, Remarks & Announcements: C57.12.xx Standard for Pole-Mounted Equipment � Enclosure Integrity for Coastal Environments Status: Proposed Standard It has been recommended by the working group that a new standard be created to cover pole-mounted equipment installed in coastal environments: PAR � will be submitted by February 17, 2006 to initiate working group activity

Scope and purpose are to be as shown in the attachment (Selected the second of the two in the agenda.)

The plan is to : � Utilize C57.12.29 substrate requirements � Work on stainless steel galling considerations � Work on coating and color requirements

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� Use corrosion test referenced in C57.12.31 � Remainder of coating tests blended between C57.12.29 and C57.12.31

7.11.2.9C57.12.33 Guide For Distribution Transformer Loss Evaluation Don Duckett & Tom Pekarek Co Chairs ([email protected] & [email protected]) PAR Status: PAR extension renewed for two years PAR expiration Date: December 2004 Current Standard Date: October 2001 Current Draft Being Worked On: #9 Dated April 2003 Meeting Date: DID NOT MEET WORK ON THIS STANDARD HAS NOW BEEN REACTIVATED 7.11.2.10 C57.12.34 Three-Phase Padmounted Distribution Transformers Ron Stahara & Steve Shull Co Chairs ([email protected] & [email protected]) PAR Status: APPROVED PAR expiration Date: 03/20/2005 Current Standard Date: March 8, 2005 Current Draft Being Worked On: N/A See Below Meeting Time: October 24, 2005 Time: 1:45 PM Attendance: 44 Total 22 Members 11 Guests 11 Guest Requesting Memberships Issues, Remarks & Announcements

Ron Stahara called the meeting to order, introductions were made, and an attendance roster was circulated. Ron reviewed the IEEE Patent Policy and asked the group if there were any patents that needed to be disclosed. None were announced to the group. The minutes were reviewed and approved as written. Ron reviewed the status of the PAR.

The high/low voltage compartment barrier removal in dead front untis was again discussed. Gerry Paiva stated that he felt that there were two major issues. The first was the potential safety problem for operating personnel. This is due to worker qualifications and training of those being allowed into the high voltage section of the transformer. The other item was cabinet security due to the loss of this central support. Gerry posed this question to the group. What is to be gained by removing the barrier? Cabinet security issues were rebutted by the Canadian users and producers who currently do not use barriers in deadfront units. After some discussion, cabinet security was dismissed because it was not a problem. The safety issue was debated by a number of US users pointing to work practices, noting that non-utility electricians were being allowed into this compartment. A motion was made by Gerry Paiva to leave the barriers as they are currently shown in the standard. It was seconded by Ken Hanus. There were 17 �for� and 5 �again�, thus the motion carried. Therefore the barriers will be left as they are now shown in the current standard.

As a side note, Ron pointed out that the current standards document had an error on last line of the table in Figure 13b where 1 ¼ was delivered but during conversion it was changed to 1�.. . He said that IEEE had corrected this problem and errata had been sent to the working group. All future documents would have the correction in place. He

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stated that IEEE had indicated that those who had purchased the document would also receive the errata sheet. Ron indicated that at the request of Ali Ghafourian, the IEEE C57.80 document had been acquired and our document terminology will meet this standard.

Ron asked if there was any further consideration of the impedance range change that had been proposed. Gerry Paiva said that limiting the fault current to 65kA was only part of the issue. Although this does help on an initial installation, it doesn�t resolve the main breaker AIC rating problem when a transformer is replaced with a lower impedance transformer due to the original�s failure. With this replacement, he explained the fault current will be higher and many times beyond the original main breaker AIC rating. Marcel Fortin commented the methods and reasoning behind these values should be put forth in an informative annex. He also commented that the 65 kA value is good for low voltage distribution but at the new 15 kV rating the maximum value is really 16 kA. Gerry also commented that he would prefer one value as the current standard specifies for transformers 750kVA and greater. Dave Wiegand commented that by fixing this impedance in combination with the forthcoming efficiency standards, it will become difficult to accomplish a transformer design. He said this is due to the geometry and standard conductor sizes that are available. Brian Klaponski also pointed out that the transformer is limited to a 25 times through fault which would affect the lower limit. After some discussion, it was decided that the 300 and 500 kVA units seemed to be where the impedance problems could exist. It was suggested by Steve Shull that a Task Force of Brian Klaponski, Dave Wiegand, and Israel Barrientos investigate what a recommended impendence range or lower limit might be based on other IEEE standards, industry practices, and requirements. These accepted the assignment with Brian coordinating the efforts of the group.

Under new business, Ali Ghafourian stated that while he was developing the IEEE C57.12.38, he discovered that the �P� dimension would not work as shown in Figure1 of this standard. He said that our dimension is currently shown as 4.5� and in reality it should be at least 5.5�. This dimension is referenced throughout the C57.12.34 document. He requested that we review this dimension for this standard. He also pointed out that as we move to the higher kVA ratings and different voltage levels, section 9.12 will not be correct. He requested that we review this as we revise the standard. He also request that the last sentence in section 9.11.3 be clarified. 7.11.2.11 C57.12.35 Bar Coding For Distribution Transformers Lee Matthews & Giuseppe Termine Co Chairs ([email protected] & [email protected]) PAR Status: APPROVED Dated: March 4, 2005 PAR expiration Date: December 31, 2009 Current Standard Date: 1996 (R2004) Current Draft Being Worked On: Draft #2 Dated: October 6, 2005 Meeting Time: October 25, 2005 Time: 3:15 PM Attendance: 22 Total 14 Members 8 Guests 0 Guest Requesting Memberships Issues, Remarks & Announcements: The meeting was called to order on October 25, 2005 at 3:15 p.m. in the Hernando Desoto Room of the Peabody Hotel in Memphis, TN.

The meeting began with introductions of those in attendance.

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The chairman asked if anyone was aware of any patents that might affect the development of this standard. No patent claims were made.

The minutes of the previous meeting were approved.

A review of the changes incorporated in Draft 2 from comments received on Draft 1 was conducted. Three manufacturers had also requested addition to the code listing in Annex A.

The remainder of the meeting consisted of a review and commentary on Draft 2 of the document.

It was recommended that the temperatures for the UV accelerated weathering test, referenced in Paragraph 4.1.6.2, be revised to agree with those in the Enclosure Integrity Standards.

The chairman asked that any additional comments, for consideration in Draft 3, be provided by January 31, 2006.

The meeting was adjourned at 3:45 P.M.

7.11.2.12 C57.12.36 Distribution Substation Transformers John Rossetti & David Aho - Co Chairs ([email protected] & [email protected]) PAR Status: PAR Approved June 2002 PAR expiration Date: December 2006 Current Standard Date: NEW Standard Under Development Current Draft Being Worked On: #09 Meeting Date: October 25, 2005 Time: 11:00AM Attendance: 39 Total 17 Members 16 Guests 6 Guest Requesting Membership Issues, Remarks & Announcements: The unapproved minutes from the S05 Jackson, MS meeting were approved. The patent policy was reviewed. No issues were identified. Mandatory Editorial Coordination David revised draft 8 to comply with the editorial recommendations as received from Michelle Turner. The meeting focused on reviewing the figures in draft nine. The figures reviewed have been copied as separate files and converted to gif format to satisfy the editorial coordination. David Aho had requested that the W.G. provide wording for the abstract and key words for the proposed standard. Jerry Murphy wrote and submitted an abstract for the draft. The abstract states as follows: Abstract C57.12.26 Small power transformers have become a significant element in distribution systems supplying large commercial customers like major resort hotels and site specific industrial customers that desire the local utility to own, operate and maintain the serving

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transformer. These transformers can range in sizes from 112.5 kVA to 10,000 kVA with primary voltages at 69,000 volts and below and secondary voltages from 34,500 to 120 volts. Transformers in this standard are generally for larger distribution customers often with special voltages or installation requirements like convention centers with large chiller plants and extensive exhibit space. There is often a desire to serve these transformers from underground systems utilizing side-mounted bushings on the primary. This standard seeks to define the small power transformer that is applied as more than just a small version of the power transformers covered by C57.12.10 and as more than a large distribution class transformer covered by C57.12.21. Key Words The following key words were selected by members and guests in the meeting: distribution substation transformer class I liquid immersed station type unit substation The final draft will be submitted for ballot after inclusion of the above items. There being no further business a motion was made to adjourn at 11:44a.m. Submitted by: John Rossetti 7.11.2.13 C57.15-200XStep-Voltage Regulators (Craig Colopy & Gael Kennedy Co Chairs ([email protected] & [email protected]) PAR Status: APPROVED Date: June 9, 2005 PAR Expiration Date: December 31, 2009 Current Standard Date: C57.15 � 1999 � Published April 2000 Current Draft Being Worked On: Draft 5.1 Dated: October 2005 Meeting Date: October 25, 2005 Time: 13:45 Attendance: 25 Total 16 Members 7 Guests 2 Guest Requesting Membership Issues, Remarks & Announcements:

• Introduction of all Present • Routing of Attendance Sheets • Minutes of the Last Meeting Un-approved to Approved (moved Lee Matthews, 2nd

by Steve Shull, Passed with no objections) • IEEE Patent Policy conflict or infringements given to group � No responses • New PAR created to cover the differences in Scope and Purpose between PAR

and Document. Extension to 31 December 2009. Comment on Dual Logo Standard.

• Comments were basis on the C57.15 being designed to stand by itself. Additional comments on Draft 5.1 received and reviewed. Copy is on the Web site. Use the comment template and send back to Craig. (Craig will look at the IEEE TR-Committee comment template as an option) Previous draft was sent to editorial staff and some comments have been received. Asked members to look first at the Abstract and keywords to make sure that they are

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complete. Comments should be back to Craig within 4-6 weeks. Would like to complete and forward on for whole Committee for a vote. Recommendation to list middle initials to names of committee members for consistency, you don�t provide it then it won�t be there. Add Ken Kanus to the member list. References used in the Section 2 should be used in the document itself, those which were not have been moved to the back. In an e-mail: Wally Bender noted he was still troubled by the short circuit rated, using the 40 times as an option. It was noted that 25 times is the standards for all regulators. User input into this noted that it was not problem for the line regulators (167 kVA, 288 amp and smaller), but that with application as the substation regulator is where there may be a problem. The corrected Draft, which will now be 5.2, will be passed out to the Web site for the committee to due a 30-45 day comment period. Please return all comments to Craig as soon as possible. Motion from ______________ to adjourn, 2nd, Ken Kanus and passed with no objection.

7.11.2.14 C57.12.37 Electronic Reporting of Test Data (formerly P1388) Richard Hollingsworth & Thomas Callsen Co Chairs ([email protected] & [email protected]) PAR Status: Submitted for editorial review and balloting PAR Expiration Date: December 2005 Current Standard Date: Published under IEEE Std. 1388-2000 Current Draft Being Worked On: 11d Dated: October 2005 Meeting Date: October 24, 2005 Time: 8:00am Attendance: 24 Total 18 Members 6 Guests 2 Guest Requesting Membership Issues, Remarks & Announcements: The meeting was opened with introductions and handing out the roster for attendance records. The patent disclosure statements were reviewed and no one responded. The results of the preliminary response of REVCOM were reviewed. Several REVCOM members felt that technical data was part of the negative votes on the initial ballot and a recirculation ballot was needed. The recirculation ballot received one negative vote. The Main Transformer Committee asked that we address that negative and Document #: C57.12.37_ Draft Revision: 11d Date: _Oct. 2005 Page #: 1, request another recirculation ballot. A draft layout of the step-regulator test information reporting data was given out for comments. The layout was based on C57.15, paragraph 8.9.5 (Certified Test Report) required data. Craig Colopy reported that users require more than that specified in C57.15. Craig is to get me a more comprehensive list of data items. The meeting was adjourned.

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1 meeting slot is requested for the March 2006 meeting. Rich Hollingsworth Co-chair, C57.12.37 7.11.2.15 C57.144 Guide to Metric Conversion of Transformer Standards Tim Olson Chair ([email protected]) PAR Status: Active PAR Expiration Date: April 2006 Current Standard Date: New Document Current Draft Being Worked On: D5 Dated: March 10, 2004 Meeting Date: Time: Meeting Times: DID NOT MEET 7.11.3 Subcommittee Old Business: None reported 7.11.4 Subcommittee New Business: None reported 7.12 Dielectric Test Subcommittee – Loren B. Wagenaar, Chairman; Stephen

Antosz, Secretary The Dielectric Test Subcommittee (DTSC) met on Wednesday, October 26, 2005, in Memphis, TN with 58 members and 62 guests present. Ten of the guests requested membership and are welcomed into the Subcommittee. See the last page of these minutes for attendance list. 7.12.1 Chairman’s Remarks 1) The Chair reviewed highlights of the Administrative Subcommittee meeting held on

Sunday:

a) Next meeting date and location is March 19-23, 2006 in Costa Mesa, CA. Host will be Bill Chiu of Southern California Edison.

b) The IEEE Editor for Transactions on Power Delivery is Stephen Antosz, whose 2-

year term expires at the end of 2005. The officers of The Transformers Committee are seeking a replacement. Anyone interested should contact Don Fallon for consideration.

c) IEEE will now accept standards documents in the Word format. Previously, only

the Framemaker format was accepted.

d) Everyone was encouraged to sign up and keep their profile information updated on the Association Management System, AMS.

e) Ken Haggerty ([email protected]) is maintaining a list of future

panel session presentations.

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2) The minutes of the Spring 2005 meeting in Jackson, MS were approved as written,

and are available on the IEEE Transformers Committee Web Site. 7.12.2 Working Group Reports 7.12.2.1 Working Group on Acoustic Partial Discharge Tests in Transformers

- J.W. Harley, Chair; Alan Darwin, Secretary Attendance: 11 members and 8 guests attended the meeting. Attendees introduced themselves. The minutes from the March 14, 2005 Jackson MS meeting were approved. IEEE Patent disclosure requirements were discussed and a request was made for attendees to identify or disclose any patents that may be related to the work of the WG. It was noted that an ABB attorney has filed the Patent Letter of Assurance relevant to the Three-Sensor System in Section 5.7 of the PC57.127 Guide with the IEEE. This assures users of the Guide that the system can be licensed. There are several systems combining acoustic signals with RF or EMI signals that are in the commercial or near-commercial stage of development. Robert Langan presented information on one such system that AEP and his company, Physical Acoustics, has developed. Members of the DTSC were invited to participate in a Pre-Ballot Survey of the PC57.127, Guide for the Detection and Location of Acoustic Emissions from Partial Discharges in Oil-Immersed Power Transformers and Reactors. There were 16 responses. None of the responses was negative. Most of the comments were editorial; several were technical. The technical comments were discussed with the WG and the Guide changed in several instances. Discussions and technical changes to Guide due to the Pre-Ballot Survey include the following: 1. The title should remain "Oil-Immersed" rather than changing to "Liquid-Immersed."

There are a number of uncertain areas with the introduction of different liquids. It was decided to handle this in a future revision or update of the Guide.

2. The Purpose was made more descriptive by changing the first sentence to read "The guide is intended to provide information that should be helpful in planning, installing and operating acoustic monitoring equipment and in meaningful interpretation of resulting data."

3. A suggestion was made to shorten the warning section. However, some people performing acoustic tests are experts in acoustics and not necessarily familiar with transformers. It was decided to leave the warning in the present form even though utility people accompany acoustic test personnel in the work areas.

4. Wording about the application of sensors was changed to alert users to avoid the ends of transformers that have cores with unwound return limbs.

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The consensus of the WG is that the PC57.127 Guide, with the changes identified by the Pre-Ballot Survey and the WG, is ready to go to Ballot. This will be done in the near future. 7.12.2.2 Working Group on Revision of Low Frequency Tests – Bertrand

Poulin, Chair The meeting was held on Monday Oct. 24th at 11h00 am. After the usual introduction and display of IEEE�s Patent policy, the minutes of the previous meeting were approved as written. Next, Dr. Lemke presented his report on the task force meeting for the revision of C57.113 (IEEE Guide for Electrical Measurements of Partial Discharges in Transformers). The minutes of this meeting are found here. The main topics are:

I. The process of revision of the guide is going well. Most comments and suggestions after drafts 1 and 2 were incorporated in draft 3 and circulated. New comments were received and will be addressed in draft 4 before the next meeting.

II. The main topic of discussion during the meeting was around the train pulse response of detectors. (see minutes for details)

Unapproved Minutes of the TF Meeting, C57.113; Eberhard Lemke, Chair 1. Introduction of TF Members and Guests, distribution of Attendance Sheets The Chairman opened the meeting at 8:00 a.m. and welcomed the members and guests. There were 47 attendees present, 16 of them TF members and 31 of them guests, where 9 requested for future membership. 2. IEEE Patent Policy The IEEE Patent Policy was discussed based on the submitted transparency. There were no patent issues for this TF Meeting. 3. Approval of Agenda The submitted Tentative Agenda was approved as it was. 4. Approval of Minutes of the TF-Meeting in Jackson, MS The submitted Minutes were approved without significant changes. 5. Activities for revision the IEEE Guide C57.113 5.1 Survey on PD Detectors The PD Survey approved by the TF members at the last meeting in Jackson has been distributed to all Dielectric Subcommittee Members prior this meeting. 5.2 Revision of IEEE Guide C57.113 All comments submitted to the Draft No. 2 have been incorporated in the Draft No. 3. This version has been distributed before this meeting to all TF members and reviewed. Discussion focused mainly on the specification of the pulse train response of PD detectors. Because few commercially available PD detectors, presently used

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for PD testing of power transformers, do not meet the IEC requirements completely, the following statements were made: a) Harmonization with IEC 60270 is the ultimate goal, where a specification of the pulse train response is required in order to ensure well comparative PD measurements using different instrumentation. b) With respect to noise rejection few available PD detectors are equipped with a tool for elimination of pulses having repetition rate below 120 Hz. This feature have to be considered critically, because a non-symmetrical occurrence of real PD pulses appearing in each half-cycle may also be rejected, which causes erroneous PD measurements. c) In this context Bertrand Poulin presented typical practical examples of PD patterns which underlined the necessity to evaluate PD events in both half-cycles. d) In order to overcome the disadvantage of the above mentioned feature for noise rejection additional notes were inserted in the 3rd Draft as a caution with recommendations. After a comprehensive discussion, the attendances agreed with the wording of these notes. The further activities of the TF will deal with the following topics: - Incorporation of the results of the discussion in the new Draft No. 4. - Contributions of TF Members to Annex F: Practical Experiences, where

practical examples of characteristic patterns of both PD events and noises are welcome.

- Updating of Annex D: Bibliography. - Updating of the References (last IEEE Standards) The Draft No. 4 will be distributed to all TF members prior the next TF meeting.

The rest of the WG meeting was devoted to review and discussion of comments and suggestions received in last circulation of C57.12.90 concerning low frequency dielectric tests.

• 10.6.1, Applied Test: No need for the exact power frequency for the test. Comment accepted and new wording will be proposed.

• 10.7.3, Induced test on Class I power transformers: Application of voltage in less than 15 sec. It is suggested to drop the requirement of raising the voltage in less than 15 sec because not every plant has that capability and this has little impact, if any, on the validity of the test. The group accepted this change. As a consequence, paragraph 10.7.3.1 is not required anymore and will be dropped.

• 10.8.2, Induced test on class 2 power transformers � test procedure: For the case of transformers equipped with pumps, make it mandatory to run the pumps during the induced test. This suggestion raised discussions and few people agreed. Among other things, this would require all cooling equipment to be mounted on transformers during induced test, even for duplicate units not having temperature rise tests. This comment was not accepted as such, but a proposal will be circulated before the next meeting.

• For the induced test, since the next revision of the standard is moving from RIV to apparent charge measurements, it is suggested to take the reference reading at the one hour test level before the enhancement and apply the maximum

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increase criteria of 150 pC based on this base reading. This also raised discussions and objections. A proposal will be circulated before the next meeting.

• 10.8.5, Indent c was omitted in the last proposed revision of the standard. Why? Answer: editorial error. It is back in the document for the next ballot.

• 10.9.1: A member stated that he will object to make the apparent charge measurement the required method of measuring pd on transformers. The group reaffirmed its intention of making the apparent charge measurement the only valid method of measuring partial discharges on transformers in order to comply with C57.12.00. The chairman will address the issue with the member.

There was no more time to address more comments and they will be reviewed at the next meeting of the working group. Meeting adjourned. 7.12.2.3 Working Group on Revision of Impulse Tests – Pierre Riffon, Chair;

Peter Heinzig, Vice-Chair The WG met on October 25, 2005, from 3:15 pm to 4:30 pm. Seventeen members and twenty-eight guests attended the meeting. The agenda was accepted as written. The minutes of the Jackson meeting were approved as written. The IEEE patent disclosure requirement policy was discussed. Reference to the package posted on the IEEE Transformers Committee Web site was made. None of the members and guests present during the meeting were aware of any patents related to the work of the WG. The first technical subject on the agenda was the review of the survey made on impulse test procedure for transformers having non-linear devices. The survey has been sent to the Dielectric Tests SC and to the WG membership on April 20 2005. A total of 132 surveys have been sent and only 28 surveys were returned. Out of these 28 returned surveys, 25 were affirmative (89,2%), 2 were negative (7,1%) and one abstained (3,6%). The various editorial and technical comments received were reviewed during the WG meeting as well as the negative ballots. The two negative ballots were contradictory, one asking to delete the intermediate reduced full wave tests while the other requesting to have more intermediate reduced full wave levels. The WG proposal is a compromise between the two negatives. After discussion, one of the negative balloter agreed to the WG proposal. The WG voted to forward the WG proposal to Subhash Tuli for inclusion into the next draft revision of C57.12.90. The second technical subject on the agenda was the review of the survey made within the WG membership on April 20, 2005 concerning the revised proposal on lightning impulse test procedure for cases where the tail time of the impulse waveshape can not be obtained. A total of 71 surveys have been sent and only 24 surveys were returned. Out of these 24 returned surveys, 19 were affirmative (79,2%), 4 were negative (16,7%) and one abstained (4,1%). The various editorial and technical comments received were partially reviewed during the WG meeting as well as the main topic of the negative ballots. After a lengthy discussion, it was agreed to delete from the testing standard, the table of minimum suggested impulse generator capacitance and energy levels and to transfer it into C57.98 (Impulse Test Guide). Because this table was not anymore mandatory and gives only guidance, its best location is in the guide not in the standard. This table will replace the existing capacitance value table of the Impulse Test Guide.

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A revised proposal will be surveyed once more time within the WG membership. The transfer of the table giving minimum impulse generator capacitance and energy levels from the standard to the guide will probably resolve the negative ballots, and the compromise reached is a significant step forward to get an acceptable proposal to all parties. The remaining mandatory requirements of the proposal (e.g. use of the optimum generator configuration, use of resistors, as well as the mandatory advice from the manufacturer to the user for cases where the tail time can not be achieved) will be kept as drafted. Because the WG meeting was running out of time, the remaining comments on the survey as well as the remaining subjects of the agenda were not discussed and will be postponed to the next WG meeting. 7.12.2.4 Working Group for Revision of the Impulse Test Guides C57.98 and

C57.138 – Art Molden, Chair; Joe Melanson, Secretary The meeting started at 3:15PM on Monday October 24th with 35 attendees present, of which 11 were members and 26 were guests. Two guests requested membership. Our Secretary, Joe Melanson, was unable to attend due to other business commitments. The IEEE Patent Policy was read to the members. There were no known patent issues to disclose relative to our Impulse Test Guide. The Minutes of the last meeting in Jackson, MS were approved. Additional modified sections were added to the guide just before the meeting and copies were sent to all the members for comment. Extensive editorial revisions still need to be made to the revised guide and an updated section on typical impulse records and an annex have yet to be added. No additional material was introduced at this meeting. Thang Hochanh reported that of the 13 sets of transformer impulse records that had been promised for the Hydro Quebec sponsored review of Transfer Function software features only two sets had been received. The members were encouraged to participate in this review by sending records to Thang as soon as possible. Pierre Riffon, WG Chair for the Revision to Impulse Tests reported that one of the participants in a recent survey he had performed had suggested that the non-linear device test procedure being proposed in the survey would be better placed in the Impulse Test Guide. WG Chair Art Molden was of the opinion that the non-linear test procedure should be included in C57.12.90 with an elaboration of that procedure included in the Guide. Bertrand Poulin reported that he is in the process of preparing a tutorial section on transfer function techniques, as applicable to transformer impulse testing. A copy of this tutorial will be made available for review by the WG and will be considered for possible inclusion in our guide. Bertrand also suggested that, based on the present revisions and remaining time before our Par expires (December 2006), existing revisions should be compiled into a document ready for ballot.

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7.12.2.5 Task Force on Liquid-Filled Transformers Dielectric Test Tables – Phil Hopkinson, Chair; Scott Choinski, Secretary

- The group discussed Revision 10 of the dielectric test tables listing the following:

o Dielectric Test levels for Distribution and Class I Transformers. o Dielectric Test levels for Class II Transformers o Table 2 for High frequency tests.

- Subhash Tuli proposed that the three tables should be combined in to one table. It was agreed that Subhash will propose the table and it will be sent to the subcommittee and the working group for discussion in the next meeting.

- It was agreed that the present tables will also be circulated for Subcommittee�s comments.

- Pier Riffon proposed that a note should be added to the Class II Transformer test tables stating that the listed BIL levels apply to grounded neutral systems. Higher BILs will be needed to floating neutral windings.

- It was agreed that Note 5 of Class I & Distribution Transformer test tables sound not refer to Class II Transformers.

- Test tables for Class II transformers should be extended to include system voltages down to 1.2 kV to cover the LV windings of the transformers.

- The issue to the appropriate tap position for making induced was discussed. It was agreed that Bertrand Pouland will draft a note that will address this issue.

- It was agreed that Note 5 from Class I and Class II test tables will be removed and a statement will be included in earlier text stating that the tests levels for the HV and the LV windings will be chosen from the following applicable tables.

7.12.3 Liaison Reports 7.12.3.1 Surge Protection Devices – Bob Degeneff No report. 7.12.3.2 High Voltage Test Techniques (HVTT), IEEE Standard 4 - Arthur

Molden Editorial work on the extensively revised Standard 4 continues. There is to be another meeting in Lake Placid, NY on November 14th. The intent is to continue this meeting until the editorial work is finished. 7.12.4 Old Business 7.12.4.1 Status of C57.12.00 and C57.12.90 Subhash Tuli reported that both main documents C57.12.00 and C57.12.90 have been sent to IEEE, and a recirculation ballot should be coming out in November 2005. 7.12.4.2 Steep Front Test Levels

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This issue has been lingering for several meetings. Do we or don�t we put the test levels back into C57.12.00? There were several opinions expressed for and against. After considerable discussion, a hand vote was taken on the following four proposed options: Put test levels in Main Body 9 votes Put test levels in Annex 2 votes Put test levels in a Guide 4 votes Do not put test levels anywhere Many votes, too many to count. A clear majority. The general feeling is that this test is a very special test, so special that it need not be included in standards but rather included in the user�s specification when it is needed. Therefore, this issue will be dropped (again). Subhash Tuli noted that, as a consequence of this action, steep front tests should be removed as an Other test in Table 19. 7.12.5 New Business 7.12.5.1 Simplification of C57.12.90 Mark Perkins raised this issue, and sent this note to the Chair of the DTSC: �It seems that there are several projects under way for additions to C57.12.90 that address special cases. For example, the case where the working group on impulse testing is adding some specific instructions for impulse testing on transformers that have non-linear devices (Zenox) connected across windings. It seems logical to me that special cases like this should be addressed in a guide whenever possible rather than in C57.12.90. Otherwise the test code will be cluttered up with a lot of information about these special cases. There is a similar case in the Performance Characteristics subcommittee for the zero sequence test on transformers with interconnected windings, which is a special case handled differently than the vast majority of transformers being tested in the industry. So my proposal is that for special cases like these, the first choice should be to put the detailed test procedures in a guide if one is available and just include a reference in C57.12.90. This would have at least 2 advantages: 1) C57.12.90 would not grow to be so large. 2) There would be less controversial material in C57.12.90 and fewer negatives from the ballots. 3) The process of 2 year ballots and updates would be simpler and more efficient. Mark Perkins� Some discussion ensued, and the following points were made:

- Cover the simple issues in 12.90 and more complex ones in a Guide - This can create timing problems with publication dates of 12.00, 12.90, and

various Guides - Guides cannot contain requirements - Put requirements in 12.00 & 12.90 and refer to a Guide; but does the Guide then

become �Required�?

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- Maybe the decision should be made on a case-by-case basis, rather than trying to establish a one size fits all policy

This same topic was discussed in the Performance Characteristics SC meeting and will be tabled for future consideration. 7.12.6 Meeting Adjourned

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Attendance at this Memphis meeting of the Dielectric Test Subcommittee

Members Present 1. Ahuja, Raj 2. Antosz, Stephen 3. Arpino, Carlo 4. Artiega, Javier 5. Enrique Betancourt 6. Bill Boettget 7. Britton, Jeffrey 8. Charles Caruso 9. Donald Chu 10. Corkran, Jerry 11. Darwin, Alan 12. Davis, Eric 13. Degeneff, Bob 14. Fallon, Donald 15. Joe Foldi 16. Ganser, Robert 17. Garcia, Eduardo 18. Saurabh Ghosh 19. Gomez-Hennig, Eduardo 20. Griesacker, Bill 21. Gruber, Myron 22. Hanique, Ernst 23. Hayes, Roger 24. Heinzig, Peter 25. Hochanh, Thang 26. Hopkinson, Philip 27. Kennedy, Sheldon 28. Vladimir Khalin 29. John Lackey 30. Lemke, Eberhard 31. Dennis Marlow 32. Matthews, John 33. Sue McNelly 34. Miller, Kent 35. Art Molden 36. Moore, Harold 37. Bipin Patel 38. Sanjay Patel 39. Perkins, Mark 40. Platts, Don 41. Poulin, Bertrand 42. Raymond, Tim 43. Riboud Jean-Christophe

44. Riffon, Pierre 45. Rossetti, John 46. Ewald Schweiger 47. Shteyh, Ibrahim 48. Sim, H. Jin 49. Snyder, Steve 50. Speegle, Andy 51. Thomas Spitzer 52. Steineman, Andrew 53. Stiegemeier, Craig 54. Robert Thompson 55. Tuli, Subhash 56. Roger Verdolin 57. Wagenaar, Loren 58. Peter Zhao

Guests Present 1. Clair Claiborne 2. Dan de La Cruz 3. Ulf Radbrandt 4. Frank Bray 5. Josh Herz 6. David Wallach 7. Dwight Parkinson 8. Joao Baldauf 9. Jim McIver * 10. Wayne Hicks 11. Sten Andersson 12. Roberto Asano Junior * 13. Axel Uraemer 14. Ramon Garcia * 15. Dharam Vir 16. Randy Rensi 17. Bob Langan 18. John Darby 19. Wayne Gibson 20. John Stein 21. Peter Balma 22. Van Nhi Nguyen

23. Mostafa Jafarnia * 24. Flavio Neuls 25. Shibao Zhang 26. Richard Marek * 27. Mike Martin 28. William Allen 29. Gael R Kennedy 30. Marcel Fortin 31. Miguel Medina 32. Pritpal Singh 33. Alvaro Cancino 34. Sergiy Razurayev 35. Tom Bassett 36. Jim McBride * 37. Rob Mayer 38. Alexander Neves 39. Martin Navarro 40. George Tolbert * 41. Jim Zhang * 42. Juan Castellanos 43. Jose Salva 44. Charles Garner 45. Sam Mehta 46. Richard Tellez 47. Robert Pealichek 48. Barry Beaster * 49. Laszlo Kadar 50. Arturo Del-Rio 51. Richard Benson 52. Brian Twibell 53. James Kilgore 54. C.J. Kalra 55. Charlie Drexler 56. Jitendra Mamtora 57. Greg Troxell * 58. Don Dorris 59. Bruce Fairris 60. Jerry Allen 61. Alex Hsu 62. Samuel Oriti * Requested Membership.

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8.0 Editor’s Report – Fall 2005 Memphis, TN Meeting Between March 11, 2005 and October 20, 2005 a total of 68 papers in the transformer area were submitted to IEEE Transactions on Power Delivery for possible publication. During this time 50 reviews were completed and 18 reviews are still in-progress. For completed reviews, the recommendations were: Accept without changes � 16; Revise and Resubmit � 25; and Reject - 9. A complete summary of these papers is listed herein. Many of the papers in this rotation have been revised and resubmitted at least once. I would like to thank all of the reviewers who volunteered for this effort and donated their time, and would like to encourage everyone associated with IEEE Transformers Committee activities to consider becoming a Reviewer. I would like to encourage those Reviewers that already have an account on IEEE Manuscript Central to keep their profile information updated and complete the areas for key words and areas of interest. Respectfully Submitted, Stephen Antosz Editor, IEEE Transactions on Power Delivery [email protected] All members of the IEEE Transformer Committee are invited to review technical papers. Please sign up at: http://tpwrd-ieee.manuscriptcentral.com/

INSTRUCTIONS FOR SIGNING UP TO REVIEW IEEE TRANSACTIONS PAPERS 1. Before you create a new account, please check for an existing account by clicking on: "Check for

Existing Account" 2. Assuming that you do not get an existing account notification email, click on "Create New

Account" and enter in your information. 3. Please specify any “Specialty / Area of Expertise” according to the 5 numerical codes below:

13a: Power and Instrument Transformers 13b: Insulating fluids category 13c: Dielectric Testing 13d: Audible Noise and Vibration 13e: Transformer Modeling Techniques

4. Please specify any “Key Words” such as: distribution transformers, core losses, oil DGA, orthermal, for example.

5. Submit your information. 6. Click on "Request Reviewer Status" to be enabled as a reviewer.

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Number Title Key Words Author Decision Date1

PESL-00019-2005 experimental determination of saturation and hysteresis characteristics with the WVAV method core, hysterisis Prof. Aurelio

Medina Reject 04/01/05

2 TPWRD-00494-2004; Rev 1

Comprehensive Diagnostic Methodology for Power Transformers Insulation Based on Polarisation Methods and Some Chemical Tests

insulation Dr. Tapan Saha

Revise & Resubmit 05/10/05

3 TPWRD-00606-2004; Rev 1

PD PULSE BURST CHARACTERISTICS OF TRANSFORMER OILS oil, PD, Prof. Massimo

Pompili Accept 04/14/05

4 TPWRD-00365-2004; Rev 1

Time-Frequency Representation of Resistance for Modeling of Transformer Winding under Impulse Test model, transient, EMTP PRITHWIRAJ

PURKAITRevise & Resubmit 06/28/05

5 TPWRD-00411-2004; Rev 2

Novel Analytical Solution to Fundamental Ferroresonance¡ªPart I: Power Frequency Excitation Characteristic

emtp, ferroresonance Wei Shi Accept 06/13/05

6 TPWRD-00412-2004; Rev 2

Novel Analytical Solution to Fundamental Ferroresonance¨CPart II: Criterion and Elimination emtp, ferroresonance Wei Shi Accept 06/13/05

7 TPWRD-00390-2004; rev 1

An Hybrid Tool for Detection of Incipient Faults in Transformers Based on the Dissolved Gas Analysis of Insulating Oil

dga, neural networks, fuzzy Jacqueline G. Rolim Accept 09/21/05

8 TPWRD-00100-2005; Rev 1

Analysis of Partial Discharge Signal Using the Hilbert-Huang Transform

partial discharge, instrument transformers

Dr. xiaodong wang


9 TPWRD-00050-2005; Rev 1

Wavelet Aided SVM Tool for Impulse Fault Identification in Transformers impulse, ANN, wavelet

Dr. PRITHWIRAJ PURKAIT

Accept 05/10/05

10TPWRD-00179-2005

Insulation Status Assessment of Cast-Resin Current Transformers Based on Digital Partial Discharge Measurement

partial discharge, cast coil, current transformers Yu-Hsun Lin Reject 09/02/05

11TPWRD-00189-2005

Internal Winding Failure due to Resonance Overvoltage in Distribution Transformer caused by Winter Lightning

resonance, overvoltage, EMTP, lightning, distribution xfmr

Hideki Motoyama


12 TPWRD-00191-2005 ABNORMAL FERRORESONACE SOLUTIONS IN POWER SYSTEMS ferroresonance, cores Saravanaselva

n Rajan Reject 09/02/05

13 TPWRD-00199-2005 Differences between Conventional and Electronic Tap-Changers and Modifications of Controller tap changer Jawad Faiz Revise &

Resubmit 07/08/05

14TPWRD-00244-2005 Overview of Partial Discharge Detection and Optical

Partial Discharge Detection inside a Transformerpartial discharge, sensors, fiber optics xiaodong wang Revise &

Resubmit 07/11/05

15 TPWRD-00253-2005 PD Multi-Targets Localization in Power Transformers Based On Ultrasonic Sensors Arrays partial discharge, ultrasonic Luo Richeng

16 TPWRD-00275-2005 Dynamic Thermal Modelling of Power Transformers-Further Development Part: I

hot-spot, thermal, top-oil temperature Dejan Susa Revise &

Resubmit 07/16/05

17 TPWRD-00276-2005 Dynamic Thermal Modelling of Power Transformers-Further Development Part: II

hot-spot, thermal, top-oil temperature Dejan Susa Revise &

Resubmit 07/16/05

18TPWRD-00328-2005

Applying Partial Discharge Measurements to Study the Insulation Life Span Locus for Cast Resin Current Trnsformers

partial discharge, cast coil, current transformers Yu-Hsun Lin Reject 09/02/05

19PESL-00032-2005 About the Average Model of the RC Loaded Single

phased Transformer in Periodical a.c. Switching ModeConstantin Strimbu Reject 08/08/05

20 TPWRD-00187-2004; Rev 1

Measurement of Three-Phase Transformer Derating and Reactive Power Demand under Nonlinear Loading Conditions

losses, harmonics Prof. Ewald Fuchs Accept 07/11/05

21 TPWRD-00188-2004; Rev 1

Real-Time Monitoring of Iron-Core and Copper Losses of Transformers under (Non)Sinusoidal Operation.

core loss, copper loss, harmonics, non-sinusoidal

Prof. Ewald Fuchs


22 TPWRD-00347-2005 Analysis of Some Measurement Errors in Bushing Power Factor Tests in the Field bushings, pf Dr. Shibao

ZhangRevise & Resubmit 09/06/05

23 TPWRD-00348-2005 Recurrent Neurofuzzy Network in Thermal Modeling of Power Transformers

thermal, modelling, fuzzy network, temperature, ANN

Prof. Michel Hell


24 TPWRD-00093-2005; Rev 1

Multi-Terminal Transformer Model Based on Two Winding Leakage Inductances

Multi-winding xfmr model, leakage inductance

Mr. Robert Del Vecchio Accept 06/29/05

25TPWRD-00353-2005 Current Transformer Model Wellington

MotaRevise & Resubmit 08/16/05

26TPWRD-00356-2005

A new On-Line Method based on Leakage Flux Analysis for the Early Detection and Location of Insulating Failures in Power Transformers

Prof. Manés Cabanas


27 TPWRD-00359-2005 Transformer Thermal Modeling: Improving Reliability Using Data Quality Control

thermal, modelling, temperature Xiaolin Mao Revise &

Resubmit 08/08/05

28 TPWRD-00055-2005; Rev 1

EarthquakeSimulator Testing of Base-Isolated Power Transformers

seismic, earthquake Dr. Nobuo Murota


29 TPWRD-00565-2004; Rev 1

Field Experiences with Measurements of Dielectric Response in Frequency Domain for Power Transformer Diagnostics

dielectric/frequency response, oil-paper insulation, water content

Jörgen H. M. Blennow Accept 07/06/05

30 TPWRD-00363-2005 Two-Dimensional Finite Element Thermal Modeling of an Oil-Immersed Transformer thermal, FEA, temperature Jawad Faiz Reject 07/29/05

31 TPWRD-00100-2005; Rev 2

Analysis of Partial Discharge Signal Using the Hilbert-Huang Transform

partial discharge, instrument transformers

Dr. xiaodong wang Accept 09/02/05

32 TPWRD-00112-2005; Rev 1

Frequency Response of Oil Impregnated Pressboard Samples for Estimating Moisture in Transformer Insulation


Mr. Chandima Ekanayake


33TPWRD-00392-2005

Line-Current Compensated Single Toroidal-Core Current Transformer for Three-Phase Current Measurement

Instrument xfmr, current xfmr, relaying C. Korasli Revise &

Resubmit 10/07/05

34TPWRD-00394-2005 A Bayesian Network Approach To Dissolved Gas

Analysis For Transformers DGA, Bayesian network Q. H. Wu

35TPWRD-00400-2005

Research on Extraction Technique of Transformer Core Fundamental Frequency Vibration Based on OLCM

core, frequency, vibration shengchang ji Revise & Resubmit 10/18/05

36TPWRD-00406-2005 Analysis of Half-Turn Effect in Power Transformers

Using Nonlinear-Transient FE Formulationcore, xfmr design, finite element

Shrikrishna V. Kulkarni


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37TPWRD-00407-2005 Transformer Core Nonlinearities Modeled in Harmonic

Domaincore, nonlinear, power system analysis

Wojciech T Wiechowski Reject 10/07/05

38 TPWRD-00244-2005; Rev 1

Overview of Partial Discharge Detection and Optical Partial Discharge Detection inside a Transformer

partial discharge, sensors, fiber optics xiaodong wang Revise &

Resubmit 08/31/05

39 TPWRD-00275-2005; Rev 1

Dynamic Thermal Modelling of Power Transformers-Further Development Part: I

hot-spot, thermal, top-oil temperature Dejan Susa Accept 09/21/05

40 TPWRD-00276-2005; Rev 1

Dynamic Thermal Modelling of Power Transformers-Further Development Part: II

hot-spot, thermal, top-oil temperature Dejan Susa Accept 09/21/05

41 TPWRD-00199-2005; Rev 1

Differences between Conventional and Electronic Tap-Changers and Modifications of Controller tap changer Jawad Faiz Revise &

Resubmit 09/01/05

42TPWRD-00411-2005

Exploring Possibilities for Characterization of Power Transformer Insulation by Frequency Response Analysis (FRA)

FRA, insulation K. G. N. B. Abeywickrama


43TPWRD-00431-2005 A Study on Voltage Measurement Error during AC

withstanding Voltage Tests on TransformersAC Voltage Test, Measurement Error Xuang Wang

44TPWRD-00434-2005

HIGHER ORDER BANDED CHAOTIC AND SUBHARMONIC FERRORESONANT SOLUTIONS IN POWER TRANSFORMERS

Ferroresonance, bifurcation Saravanaselvan Rajan

45TPWRD-00447-2005

Application of the Wavelet and the Neural Network to Partial Discharge Measurement and Fault-type Identification for Epoxy-resin Transformers

Neural network, Cast Coil, Distribution xfmrs L. J. Chen

46TPWRD-00458-2005 Acoustic Emission Technique for Detection and

Location of Simulated Defects in Power Transformers acoustic, pd, Nagamani Hebbale Narasimhaiah

Reject 10/18/05

47TPWRD-00460-2005 Geomagnetically induced currents - initiators of

transformer failure? GIC, solar, geomagnetic Gert COETZEE Reject 10/18/05

48TPWRD-00474-2005

Ability to Identify the Circuit Element that has Undergone a Change in the Equivalent Circuit Representation of a Transformer Winding

equivalent circuit, lumped parameter, LVI L. Satish Revise &

Resubmit 10/10/05

49TPWRD-00480-2005 Improved Electromagnetic Transient Investigation on

Dynamic Non-linear Power Transformer System transients, emtp Zhe Chen

50TPWRD-00492-2005

Analysis of Ferroresonance Modes in Power Transformers Using Preisach-Type Hysteretic Magnetizing Inductance

hysteresis, ferroresonance, magentizing

Afshin Rezaei-Zare


51TPWRD-00503-2005

Loading Guides and ANN Analysis Utilization for Oil-Immersed Distribution Transformer Condition Monitoring

loading, ANN, condition, distribution xfmr

Jouni K. Pylvänäinen

52TPWRD-00515-2005 Proposition of Individual Loading Guide for Power

Transformers loading, Shinichi Toujo

53TPWRD-00521-2005

A Sequential Phase Energization Method for Transformer Inrush Current Reduction -Transient Performance and Practical Considerations

inrush current, transient analysis, ferroresonance, power quality

Wilsun Xu

54TPWRD-00525-2005

De-noising the Measured Neutral Current for Detection and Localisation of Faults in Transformer Winding using Wavelet Technique during Impulse

faults BHOOMAIAH ANUGULA

55 TPWRD-00112-2005; Rev 2

Frequency Response of Oil Impregnated Pressboard Samples for Estimating Moisture in Transformer Insulation


Mr. Chandima Ekanayake Accept 10/04/05

56 TPWRD-00199-2005; Rev 2

Differences between Conventional and Electronic Tap-Changers and Modifications of Controller tap changer Jawad Faiz Accept 09/06/05

57 TPWRD-00353-2005; Rev 1 Current Transformer Model Wellington

MotaRevise & Resubmit 10/04/05

58 TPWRD-00365-2004; Rev 2

Time-Frequency Representation of Resistance for Modeling of Transformer Winding under Impulse Test model, transient, EMTP PRITHWIRAJ

PURKAIT

59 TPWRD-00244-2005; Rev 2

Overview of Partial Discharge Detection and Optical Partial Discharge Detection inside a Transformer

partial discharge, sensors, fiber optics xiaodong wang Accept 09/12/05

60 TPWRD-00359-2005; Rev 1

Transformer Thermal Modeling: Improving Reliability Using Data Quality Control

thermal, modelling, temperature Xiaolin Mao Accept 09/19/05

61 TPWRD-00097-2005; Rev 1

Effects of Moisture in Oil/Paper Insulation On Power Factor Measurements


Dr. K Abdolall

62 TPWRD-00055-2005; Rev 2

EarthquakeSimulator Testing of Base-Isolated Power Transformers

seismic, earthquake Dr. Nobuo Murota

63TPWRD-00572-2005 Magnetizing Current Harmonics, Interharmonics and

Subharmonics: An Analytical Studymagnetizing, inrush current, harmonics

Prof. Alexander Emanuel

64TPWRD-00574-2005 Influence of VFT on Shell-type Transformer shell-form, transients, emtp Dr. Shigeto

Fujita

65 TPWRD-00189-2005; Rev 1

Internal Winding Failure due to Resonance Overvoltage in Distribution Transformer caused by Winter Lightning

resonance, overvoltage, EMTP, lightning, distribution xfmr

Hideki Motoyama Accept 10/07/05

66 TPWRD-00494-2004; Rev 2

Comprehensive Diagnostic Methodology for Power Transformers Insulation Based on Polarisation Methods and Some Chemical Tests

insulation Dr. Tapan Saha

67 TPWRD-00474-2005; Rev 1

Ability to Identify the Circuit Element that has Undergone a Change in the Equivalent Circuit Representation of a Transformer Winding

equivalent circuit, lumped parameter, LVI L. Satish

68TPWRD-00608-2005 A Novel Fuzzy Logic Technique to Identify Critical

Ranking in Power Transformersaging, insulation life, fuzzy logic, assessment

Muhammad Arshad

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9.0 Meetings Planning Subcommittee – G.W. Anderson The Meetings Subcommittee (Mtgs SC) holds an open meeting at each Committee meeting to plan future meetings and to assist future hosts by education, mixing of ideas, and lessons-learned. The meeting is attended by the SC Chair, the present meeting host, future hosts, and hosts from past meetings. Others interested in hosting a future meeting, or assisting with meeting planning, are encouraged to attend. The SC meeting began at 3:00 p.m., Wednesday, October 26, 2005 at The Peabody Hotel, in Memphis, Tennessee, USA. Twenty-six (26) people were in attendance. Greg Anderson, SC Chair facilitated. The meeting began with introductions by the attendees. 9.1 Committee Finances Committee funds are presently $18,793.02 (as of October 1, 2005). Greg thanked the Meeting Hosts for working hard to control expenses and help with stewardship of the Committee's funds. The hard work by volunteers allows us to maintain low registration fees. 9.2 Past & Present Meetings 9.2.1 Past Meeting - Jackson, Mississippi, USA (March 13-17, 2005) Thanks to Andy Speegle and Kuhlman Electric for hosting the meeting. Jackson, Mississippi was chosen due to its central location of 3-4 transformer-related manufacturing facilities including Kuhlman Electric, Howard Industries, and Siemens. Attendance was good with 325 attendees and 22 companions. 9.2.2 Present Meeting - Memphis, Tennessee, USA (October 23-27, 2005) Randy and Sandy Williams and ABB Inc. were the gracious hosts of this meeting. Randy, Sandy and Beverly Jenkins of ABB did an outstanding job of helping plan the meeting and taking care of local issues. Randy "raised the bar" with showing how a meeting can be marketed to regular attendees and newcomers. He did an excellent job in promoting his meeting at the Jackson Meeting. We look forward to perhaps getting Randy to help evangelize the Committee in the future. Randy's hard work paid off with a record attendance in Memphis of 382 attendees and 83 companions (465 total). FYI, the previous record-holder was the Niagara Falls Meeting in fall 2000 with 361 attendees and 94 companions (455 total). We had three great technical tours at this meeting! On Sunday morning, 163 people registered to visit the ABB Components and Insulation Materials Plant in Alamo, TN. On Monday evening, a record 194 people registered to visit the Reinhausen Manufacturing Facility in Humbolt, TN. On Thursday afternoon, one bus-load of people visited the ERMCO Distribution Transformer Facility in Dyersburg, TN. On Sunday evening, 367 attendees and companions enjoyed an energetic welcome reception on the rooftop of The Peabody Hotel. Ms. Ruby Wilson, the "Queen of Beale Street" and her 8-peice band kept the energy going, and afterwards Elvis "occupied" the ladies. The speaker for the Tuesday Luncheon (191 registered) was Mr. Angelo Lucchhesi, with Jack Daniels. Mr. Lucchhesi, who is 84-years-old started to work with Jack Daniels in 1953 amused with his old stories and a pleasing distribution of "door

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prizes". On Monday, 107 people participated in the Standards Development Review working luncheon. On Wednesday evening, a record 306 people enjoyed an evening at Graceland at the Old Capital Inn in Jackson. On Monday, 63 companions/spouses enjoyed a bus tour of Memphis Area attractions such as the Rock & Soul Museum and the Pink Palace Museum. On Tuesday, 56 companions/spouses enjoyed stops at the National Civil Rights Museum and the Viking Culinary Arts Center where they ate their own creations. Special thanks to Reinhausen, HICO America, and Baron USA for sponsoring coffee breaks at this meeting and helping us defray the cost. Contact Joe Watson ([email protected]) if you are interested in sponsoring coffee breaks at a future meeting. 9.3 Future Meetings 9.3.1 Summary The following dates, locations and respective hosts for future meetings were reviewed. • March 19-23, 2006 -- Costa Mesa, California; Hosted by Bill Chiu and Southern California Edison • October 22-26, 2006 -- Montréal, Québec hosted by Thang Hochanh and Hydro-Québec. • March 11-15, 2007 (tentative date) -- location to be determined • Fall 2007 & Spring 2008 -- open • Fall 2008 -- Porto, Portugal; Hosted by EFACEC Possible locations for future meetings include: Minneapolis (possibly Fall 2007), Miami, Denver, Phoenix, San Antonio, Kansas City, New York or New Jersey (near IEEE HQ) to name a few. Discussions continue of a possible meeting in an overseas location such as Portugal, (possibly Fall 2008), or perhaps Italy, Japan or Korea. 9.3.2 Upcoming Spring 2006 Meeting (March 19-23) -- Costa Mesa, California Bill Chiu and SCE will be the host of this meeting at the Hilton Costa Mesa. A technical tour of LADWP Sylmar HVDC Converter Station is planned. Attendance on this tour will be restricted to a small group of people (probably just Committee Members). A security check of each person will be necessary. The Wednesday Evening Dinner Social will be held at the Richard Nixon Library and Birthplace. Companion Tours will consist of likely visits to the Hollywood area and perhaps whale watching off Dana Point. 9.3.3 Upcoming Spring 2007 Meeting No report. A location of this meeting has not been determined. 9.3.4 Upcoming Fall 2006 Meeting (October 22-26) -- Montreal, Quebec Thang Hochanh and Hydro Quebec IREQ will host the meeting at the Delta Centreville Hotel (in Montréal, Québec, Canada. Technical tours will consist of a tour of IREQ High Voltage Labs, a tour of the ABB Large Power Transformer Factory in Varennes, and perhaps a tour of the famous Bombardier aircraft factory.

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9.4 Working Group Reports 9.4.1 WG on Web-Site Development This working group did not meet in Memphis. 9.4.2 WG on Educational Development This working group did not meet in Memphis. 9.5 New Business 9.5.1 Association Management System Work will continue to develop new reports. 9.5.2 Tutorials/Presentations The technical tutorials/presentations continue to "exceed all expectations". Material from each of the presentations is available on the Committee's web-site. Contact Kent Haggerty ([email protected]) if you are interested in presenting in the future or have an idea of a future presentation. Monday's presentation was on "The Evolving Problem of Corrosive Sulfur in Transformer Oil" by Clair Claiborne of ABB, Anne Goldsmith from Calumet Lubricants Co., Lance Lewand of Doble, Tom Lundquist of SRP, and others. Tuesday presentation was entitled, "Transformer Insulation Upgrading and the Loading Guide Equations" by TV Oommen, Consultant and Tom Prevost of EHV Weidmann Industries Future candidate presentations include: Web-based Review of PES Technical Papers, IEEE Virtual Communities, Noise and Sound Measurements, Audible Sound Vibration in Transformers & Reactors, Paralleling Transformers, Ester-based fluids, Moisture Dynamics and Evaluation in Paper, Transformer Life Expectancy, a summary of the Trial-use Standard of Test Requirements for Instrument Transformers, FRA, Loss Tolerance & Measurement (by Ramsis Girgis), and National Energy Policy (by Phil Hopkinson). We discontinued providing CEUs at the presentations. It was determined that most people do not need accredited CEUs for maintaining professional licenses, but rather unaccredited professional development hours (PDHs) is sufficient. Again at this meeting, we provided a means for attendees to download a "certificate of attendance" from the web-site and bring to the presentation for the instructor to personally sign. This process worked well in previous meetings and will continue for future meetings. We continue to experiment with recording the presentations with a program called "Camedia". This application runs in the background of a MS-Powerpoint presentation, creating a .MOV file, while recording in real-time the voice of the presentation over the slide presentation. We will continue to experiment with this program and provide the presentations on the website after each meeting.

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9.5.3 Coffee Break Sponsors We continue to develop a program to allow companies to sponsor coffee breaks. Joe Watson is administrating the program. We highlight the sponsors in the Meeting Schedule and indicate their patronage on new signs located in the break area. Representative from the companies are allowed to distribute limited commercial information (flyers) during the break. We will continue to cautiously experiment with this and develop a policy to foster relationships with vendors and help maintain our low registration fees, while keeping a technical focus. We have also started posting the list of upcoming prospective break sponsors on the website. Contact Joe ([email protected]) if you are interested in sponsoring a future break. 9.5.4 Committee Historians We continue to look for volunteers to help document and archive the history of the Committee; i.e. old meeting minutes, old photos, etc. It was proposed that a group of "historians" (or "old timers") develop a plan to gather old meeting information for permanent archiving. It was suggested that we should create an "anniversary CD" that will contain an assembly of documents and meeting minutes from the past 10-15 years. The CD could perhaps be presented as a gift to all Committee Members and made available to meeting guests and other interested individuals. We continue to look for someone to champion this effort. 9.6 Miscellaneous Additional topics were discussed and reviewed: We have purchased wireless LAN equipment that we will bring to each meeting. This will provide attendees with a secure access to the Internet. An access key to the network can be obtained at the meeting registration desk. For more information, contact Craig Stiegemeier ([email protected]). We started taking a photo of each attendee at the San Diego Meeting and created a webpage displaying the photos. This would help everyone "place a face with a name". The page would be protected from access from the general public and will be accessible only behind the secure portion of the website. We initially are only including photos of Committee members on the website. These photos will soon be incorporated into the AM System in the member profiles. Again it was noted that the Committee's "Marketing Flyer" is available on the website (see the "Services" box on the homepage). It is encouraged that everyone download and print this two-page document and distribute it at local conferences, seminars, and IEEE meetings. The meeting was adjourned. Respectfully Submitted, Greg Anderson, SC Chair

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10.0 Reports of Liaison Representatives 10.1 Standard Coordinating Committee No 4 10.1.1 STANDARDS COORDINATING COMMITTEE 04 – INSULATION SYSTEMS Scope:

• To formulate guiding principles for the evaluation of insulation materials and systems for electrical and electronic applications.

• To formulate principles for the identification of insulation materials and systems based on functional tests and/or experience.

• To coordinate the preparation of standards for functional test programs and diagnostic methods for the evaluation of insulation materials and systems.

Standards Status:

• IEEE 1-1986 (R2000) Recommended Temperature Limits in the Rating of Electrical Equipment and for the Evaluation of Electrical Insulation: Reaffirmation approved by the IEEE-SA Standards Board September 2005.

• IEEE 98-2002 Preparation of Test Procedures for the Thermal Evaluation of Solid Electrical Insulating Materials: This document was revised consistent with IEEE 1 and IEC 60216, Determination of Thermal Endurance Properties of Electrical Insulating Materials, and published in 2002.

• IEEE 99-1980 (R1992) Preparation of Test Procedures for the Thermal

Evaluation of Insulation Systems for Electrical Equipment: SCC-04 has requested the status of this standard be changed from Active to Stabilized, and subsequently have been informed that REVCOM is presently not recommending stabilization of standards. Alternatively, reaffirmation will be pursued.

Note: A stabilized standard is still in use by Industry, but has reached a state of maturity wherein continuous maintenance by the Sponsor is unwarranted.

Membership: The Committee is seeking new members if you are interested, please contact me. Paulette Payne Powell Chairperson, SCC-04 202-388-2335 office 202-497-9057 cell [email protected]

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10.2 IEC – TC Technical Advisor to USNC 10.2.1 IEC TC-14 Technical Advisory Group Meeting Minutes The advisory group met at 3:00 PM with 19 participants present and discussed the following:

− Phil Hopkinson gave an overview of various discussions and activities that took place at the Johannesburg meeting of the IEC General Meeting in South Africa. Additional details of this meeting will be posted at the IEEE Transformer Committee website.

− Phil has been appointed the convener for revising the IEC 60076-1 standard for the general requirements for Power Transformers.

− Rick Marek continues to be the convener for the working group responsible for developing standards for the application of high temperature materials in transformers. This document will be published toward the end of 2006.

− It was proposed that Canadian, Mexican and the US Technical Advisors should coordinate their input into IEC Standards for developing a common position.

There being no new business, the meeting adjourned at 4:15 PM Jeewan Puri 10.3 Cigre 13.3 CIGRE liaison report JC Riboud Study Committee A2 Transformers Last SC committee met in Moscow last June Main members Chairman is Mr Pierre Boss (CH) [email protected] Secretary is Mr Claude Rajotte ( Ca) [email protected] The SC A2 has 4 advisory groups : Transformer technology leaded by H Reijnders [email protected] Transformer users leaded by C Rajotte [email protected] Tranversal cigre activityleaded by P Lorin [email protected] Strategic planning leaded by P Boss [email protected] Hot Topic • Corrosive sulphur in oil TF A2 31

A new task force was set up in Moscow which already achieved its first target with the preparation of a term of reference ready for publication in electra. Mats Dahlund [email protected]

Ongoing Work:

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• Liaison with D1 01 oil impregnated paper

D1 01 leaded by lars Lundgaart [email protected] deals with paper fluid impregnated systems. Liaisons have been created with TF 13 on oil maintenance : N Dominelli from BC Hydro and with TF 12 on furanes : L Cheim [email protected]

• JWG A2/ A3 B3/ 21 Electrical environment Has issued a report for publication in electra M Glinkowski [email protected]

• A2 23 Life time data management

Publication forseen in Electra soon as final revision of the document was held in august N Fantana [email protected]

• A2 24 thermal performances: J Declercq [email protected]

• A2 25 bushing reliability A survey has been sent a few failure have been reported by utilities and will be compiled. A2 26 Mechanical condition assessment

P Picher [email protected].

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• A2 27 recommendation for condition monitoring facilities

P Jarman [email protected]

• JWG A2 B4 28 HVDC transformers

M Saravolac [email protected]

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• A2- 30 Moisture:

Viktor Sokolov [email protected]

• A2- 29 reliability K Ryen [email protected]

Future publications SF6 transformers by Dennis Allan Transients in Russian grid by Lokhanin Miscellaneous Peter Heinzig will prepare a term of reference for 800 kV transformer specification which will be used as the basis of a new task force. Next Session Paris 2006 The preferential subjects are:

PS1 : Transformer reliability on technical , economical and strategic aspect. PS2 : Phase shifter application and specification PS3 : Effect of transients on transformers performances

You can find more on www.cigre-scA2.org 11.0 Old Business – K.S. Hanus There were no items of old business raised for discussion. 12.0 New Business – K.S. Hanus There were no items of new business raised. Respectfully submitted, Thomas A. Prevost Secretary

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IEEE / PES Transformers Committeegrouper.ieee.org/groups/transformers/meetings/f2005_memphis/... · IEEE / PES Transformers Committee Meeting October 23, 2005 ... Angell, Don Antosz,