Technical Specification for 11kV, 20kV and 33kV Pole Mounted Auto-Reclose Circuit Breakers NPS001_009

7/27/2019 Technical Specification for 11kV, 20kV and 33kV Pole Mounted Auto-Reclose Circuit Breakers NPS001_009

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Document reference NPS/001/009

Version:- 3.0 Date of Issue:- Oct 12 Page 1 of 29

CAUTION! - This document may be out of date if printed

NPS/001/009 Technical Specification

for 11kV, 20kV and 33kV Pole MountedAuto-reclose Circuit Breakers.

1. PurposeThe purpose of this document is to detail the requirements for 11kV, 20kV and 33kV pole mountedauto-reclose circuit breakers (PMAR) for use on the overhead line distribution networks of NorthernPowergrid.

This document supersedes the following documents, all copies of which should be destroyed.

Ref Version Title

NPS/001/009 Ver. 2 Feb 2008 NPS/001/009 Technical Specification For 11kV, 20kV And33kV Pole Mounted Auto-Reclose Circuit Breakers

2. ScopeThis document details the design and operational requirements for 11kV, 20kV and 33kV PMARsincluding the control cabinet and all the associated equipment located within. New PMARs are requiredto integrate into an extensive existing overhead line automation system, as such this specification alsoincludes detailed information relating to the communication and control requirements.


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2.1 Contents

1. Purpose .................................................................................................................................... 12. Scope ....................................................................................................................................... 1

2.1 Contents ............................................................................................................................... 23. Technical Requirements ........................................................................................................... 3

3.1 Environmental Conditions ................................................. ......................................... ........... 33.2 Ratings ................................................................................................................................. 33.3 PMAR and Mounting Requirements ........... ........................................................................... 43.4 Anti-Corrosion requirements ................................................................................................. 63.5 Control Cabinet Requirements ................... ........................................................................... 63.6 Communication Systems ..................................................................... .................................. 8

3.7 Cabinet and Circuit Breaker Connection ............................................................................... 93.8 Circuit Breaker Operational and Control Requirements ......................................................... 93.9 Protection Relay Characteristics ................................................................................ ........... 9

3.10 Input/Output Expander Card ............................................................................................... 113.11 Type and Routine Tests ..................................................................... ................................ 114. References ............................................................................................................................. 125. Definitions .............................................................................................................................. 136. Authority for issue ................................................................................................................... 14Appendix 1 Schedule of Requirements .......................................................................................... 15**Logistically Northern Powergrid has a preference to receive units capable of dual voltage operationat both 11 and 20kV, but this does not preclude the offer of units for single voltage operation.Appendix 2 Schedule of Technical Parameters .............................................................................. 15Appendix 2b ...................................................................................................................................... 18Appendix 3 Logistical Requirements .............................................................................................. 20Appendix 4 - Self Certification Conformance Declaration .................................................................. 21Appendix 5 - Pre-commission testing, Routine Inspection and Maintenance requirements ............... 28

Appendix 6 - Technical Information Check List ................................................................................. 29


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3. Technical Requirements

PMAR circuit breakers shall be designed and tested in accordance with ENA TS 41-36, ANSI StandardC37.60 and the additional clauses or requirements located within this specification.

3.1 Environmental Conditions

The PMARs shall be capable of operation within the following service conditions:

a) Ambient temperature range of -25C to +40C wher e the average value of the ambient air temperature,measured over a period of 24h, does not exceed 35C .

b) Wind pressure not exceeding 730 Pa (corresponding to 33 m/s wind speed).c) Maximum installation altitude not exceeding 1000m.

Account shall be taken of any detrimental effects resulting from condensation and/or precipitation.

3.2 Ratings

3.2.1 Rated Voltage (Ur)

The equipment shall be rated for use at 12kV, 24kV or 36kV as defined in the Range 1, Series 1 subclause 4.1.1 of BS EN 62271-1:2008+A1:2011.

3.2.2 Rated Insulation Level (Up)

Rated Voltage UrkV(rms. value)

Rated short-duration powerfrequency withstand voltage UdkV (rms. value) for 1 minute

Rated lightning impulse withstandvoltage Up kV (peak)

CommonValue Across theisolating distance Common Value Across theisolating distanceDry Wet Dry Wet

12 50 45 55 50 110 12524 70 60 77 66 125 (**150 ) 145 (**165)36 95 80 105 88 200 220

** The preferred impulse insulation withstand voltage shall be as detailed in Table 1b of BS EN 62271-1:2008+A1:2011, however the reduced value detailed in Table 1.1a of ENA TS 41-36 will beacceptable for 20kV units.

3.2.3 Provision for Dielectric Tests on Cables

The additional Power Frequency Withstand Voltage Type Tests as detailed in ENATS 41-36 clause

1.4.2.2 are not required as Northern Powergrid do not accept PMARs as a point of isolation for work orcable testing purposes.

3.2.4 Current RatingsVoltage Normal Current Rated short-time withstand current

(kA)

12kV630 A 12.5kA24kV

36kV 800 A 16 kA


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3.2.5 Values of Rated Line-charging Breaking Currents and Rated Cable-charging BreakingCurrents

Rated VoltagekV

Breaking Current KA

Rated Cable Charging Rated Line Charging

12kV 10 1

24kV 16 1.5

36kV 20 2

3.2.6 Rated Frequency

The rated frequency shall be 50Hz.

3.2.7 System Earthing

The PMARs are required for use on a system that has its neutral directly earthed, resistance earthed orearthed via an arc suppression coil.

The equipment shall be suitable for use on three phase, 50hz, 11kV, 20 or 33kV electrical distributionnetworks in which the neutral point is earthed either directly with typical maximum earth fault passagelevels of 2000A for 1.5 seconds or by means of a neutral earth resistor in which the earth fault passagelevels have been limited to 1200A for 1.5 seconds.

On certain parts of the distribution system, the above earthing methods have been replaced by orsupplemented with arc suppression coils.

The arc suppression coils have been installed to manage earth faults that are transient in nature. Theprotection system has been designed in such a way that the coil remains in circuit for a specific periodof time limiting the flow of fault current. This action negates the requirement for an immediate circuit

breaker operation and thus allows the system to operate normally for transient faults. If the fault issustained, the protection system reverts back to the more traditional resistance earthed protectionenvironment detailed above.

3.3 PMAR and Mounting Requirements

3.3.1 Mounting Arrangements

PMARs shall be designed to be mounted onto single wood poles utilising lightweight, compact polemounting frames that shall be supplied with each PMAR. The mounting frames shall be designed to besecured to the pole utilising two M20 pole bolts vertically spaced with 360mm centres. The fixingswithin the mounting frame shall be designed with a M22 hole for the top fixing and an M22 keyhole slotfor the bottom fixing. The preferred mounting arrangement will result in the PMAR being locatedvertically below the overhead conductors.

PMAR units shall be supplied complete with manufactures data plates indicating the serial number andkey technical parameters, including the weight of the PMAR.

3.3.2 PMAR status indication

All PMARs shall be supplied with a means of providing the current status of the equipment without therequirement to interrogate the control relay.In the open state the label or indicator shall be greenIn the closed state the label or indicator shall be red


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3.3.3 Insulator Bushings

Insulator bushings shall be manufactured from light weight durable materials that are UV stable and

comply with the rated insulation levels detailed in clause 3.2.2.

3.3.4 HV Connections

On the 11 & 20kV units, the PMAR shall be supplied equipped with 400A mechanical parallel groovetype connectors or double holed lugs to allow the connection of insulated jumpers to the HV terminalsof the circuit breaker. The clamps shall be designed to allow the connection of flexible copper insulatedjumpers of minimum cross section 70mm

2. All connections shall be shrouded to protect against

interference from birds or small animals.On the 33kV units the PMAR shall be supplied equipped with 800A connectors and designed to allowthe connection of flexible copper insulated jumpers of minimum cross section 120mm

2.

3.3.5 Local Mechanical Trip Facility

Facilities shall be provided to allow the circuit breaker to be tripped manually without the need forexternal power supplies. This shall normally be provided through the use of a yellow pull ring mountedon the exterior of the circuit breaker. The trip ring shall be designed to be operated from ground levelwith the use of standard insulated operating rods. Once the manual trip has been operated, it shall notbe possible to close the circuit breaker either locally or remotely by electrical means without the triplever being manually reset.

3.3.6 Earth Connection

The PMAR mounting bracket shall incorporate a 22mm hole to allow the bracket to be bonded to thepole earthing system.

3.3.7 Erection Facilities

The PMARs shall be supplied with suitably rated lift ing eyes, positioned to facilitate the lifting of theequipment in the correct orientation without the lifting straps transmitting any forces onto with thebushings during the lifting operation. Where this cannot be accommodated using standard slings, thePMAR suppliers shall provide Northern Powergrid with lifting frames for this purpose. All PMARs shallbe marked to indicate the weight of the circuit breaker and the control cabinet and shall have a diagramof the lifting and slinging arrangement to facilitate the correct lifting methodology on site.

3.3.8 Arc Interruption Medium

HV switch arcs shall be interrupted using vacuum bottle technology.

3.3.9 Stored Energy

The circuit breaker shall not be allowed to close unless there is sufficient stored charge available to

allow the circuit breaker to be electrically tripped.


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3.4 Anti-Corrosion requirements

Ferrous surfaces shall be protected against corrosion by galvanisation or Zink spray coating. Surfacesshall be prepared in accordance with ENA TS 98-1.

3.4.1 Zink Spray

The zinc shall be applied to a thickness of Zn4 in accordance with BS EN ISO 2063.

3.4.2 Galvanising

Galvanising shall be applied by the hot dip process in accordance with BS EN ISO 1461 to achieve aminimum thickness of 85 m and an expected min./max. durability figure of 40/>100 for C3 or 20/40 forC4 corrosivity categories as detailed in BS EN14713-1.

Oversize tapping or re-tapping of female threads shall be provided where the bolt or male thread is hotdip galvanised. Nuts shall be tapped up to 0.4mm oversize after galvanising and the threads shall beoiled. Bolts and screwed rods shall be galvanised after thread forming.

3.5 Control Cabinet Requirements

3.5.1 Design of control cabinet

The control cabinet shall be large enough to incorporate the following equipment within the Cabinet:

Control RelayCommunications RTU,Battery charger and batteries,Heater and thermostatic control unit,Radio communications tray to allow a radio or modem unit to be installed.

The control cabinet and doors shall be fabricated from stainless steel. The cabinet shall be designed tomeet the "degrees of protection" and Enhanced Security requirements as detailed in clause 3.5.2 and3.5.3 of this specification.

The control cabinet shall incorporate a 12mm stud mounted externally in the base to allow a minimumof 2 earth connections to be made to the cabinet.

The control cabinet shall allow external power supplies and communications aerials to be terminatedinto the base of the cabinet. To achieve this requirement the control cabinet shall be supplied with abulkhead type TNC-TNC antenna fitting (installed in a M16 hole) with female sockets on each side.Additionally it shall incorporate an M22 hole to allow the LV supplies to be terminated onto an M20cable gland (CW20S).

The control cabinet shall be designed to be mounted onto a wood pole and be supplied with allbrackets and fixings required. Under normal circumstances the control cabinet is required to bemounted on the pole with the main display at average eye line height. As such it shall be provided withan umbilical communication cord as detailed in clause 3.7

3.5.2 Degree of protection by the control cabinet

Protection Against Access - The degree of protection (IEC 60529) of persons provided by the enclosureagainst access to hazardous parts and protection of the equipment against ingress of solid foreignobjects shall not be less than IP3XD.


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Protection Against Ingress of Moisture - The degree of protection for pole-mounted enclosed equipmentshall be not less than IP34 in accordance with IEC 60529. The weatherproofing test method shall be

the method given in annex C of IEC 60694.

3.5.3 Enhanced Security To protect against unauthorised Interference

Cabinets shall be designed to reduce the likelihood of interference with the equipment located withinthe cabinet. Typical methods of achieving this requirement shall include, but not be limited to thefollowing methods:-

Multi-point locking systemReinforced cabinet doors

Cabinets shall be tested in accordance with the LPS 1175 (Loss Prevention Standard) so that theyachieve a minimum security rating classification of 2 (with options for class 3), tool category C.Manufactures shall provide details of their proposals to satisfy this clause and any testing they have

carried out to verify the effectiveness of the design.3.5.4 Batteries and Chargers

Control cabinets shall include battery charger units and secondary batteries. The batteries shall be lowloss rechargeable 12V batteries that have a minimum operational lifetime of 10 years in an environmentthat complies with clause 3.1

Typically the charging units will be supplied from externally mounted auxiliary Voltage transformer(system voltage /230V), although they may also be supplied from local 400/230V 50Hz supplynetworks. All charging units shall incorporate battery condition and test software.

Manufactures shall provide details of the quiescent drain placed on the batteries when the LV auxiliarysupplies are not available.

In the event of a failure of the external supply voltage or of the battery charger or battery, a means shallbe provided to generate an alarm that registers both locally on the controller display located in thecontrol cabinet and remotely as a SCADA output indicating the failure condition.

The control cabinets shall incorporate a double pole isolator in the LV power supply circuit. The cabinetshall have the facility to isolate potential LV supplies from a single location within the cabinet.

Disconnection of batteries for maintenance or replacement purposes, or in the event ofbattery/charger/supply failure causing the batteries to discharge, shall not cause a loss of stored datawithin the Relay or RTU unit

The control cabinets shall be supplied with a (2 wire) 12V power lead suitable for supplying power tothe radio. The length of this wire shall be sufficient in length to reach the rear of the radio units and befitted with a 10A in line fuse. The free end of the power lead shall be terminated into a connector block.

All battery terminals shall be provided with insulating shrouds to prevent inadvertent short circuiting ofthe terminals.

3.5.5 Heaters

The control cabinets shall be supplied complete with thermostatically controlled heaters designed towork solely from an external 240V power supply. In the event of loss of external power supplies, theyshall not impact on the standby capacity of the batteries.


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3.5.6 Electromagnetic Compatibility

The equipment (including control and communication systems) shall comply with EMC Directive

89/336/EEC, IEC60694 and BS EN 62271.

3.5.7 Operational Safety and Locking

The control cabinet and relay unit shall be designed to allow a field operative to select and secure theequipment in an open or closed status. Once in this designated status, it shall not be possible tochange the status of the equipment by remote control means.The control cabinet door(s) shall be suitable for application of a padlock with a 7mm diameter shackle.

3.5.8 Computer Port

The electronic controller shall be supplied with a 25 way female D-type connector providing RS232communication to the electronic controller.

3.5.9 Programming Software

Software shall be provided to control or programme the units via the computer port in clause 3.6.5

3.5.10 Internal Power Socket

A electrical socket outlet designed for operation at 240V shall be provided within the control cabinet.The socket shall be protected with a suitable MCB to limit the maximum current available to less than500mA. (Suitable for powering typical laptop power supplies only)

3.5.11 Remote Operation of the Control Relay

The control relay must incorporate an integral RTU (Remote Terminal Unit). The RTU shall provide viaa suitable communications system, a remote control and indication facility.

Appendix B provides details of the DNP3 point assignments required by the RTU to integrate into theexisting Northern Powergrid SCADA control system.

3.6 Communication Systems

3.6.1 Radio Systems

Northern Powergrid utilises two distinct types of radio system to communicate and control the PMARs,these consist of the Radius Low Power, multi-hopping radio system used in the Northern Powergrid(Northeast) Area and the Key Radios (MPT 1327) radio system used in the Northern Powergrid(Yorkshire) PLC area.

3.6.2 Message size (Conflict with Radius radio system)

The radius low power radio system has a limit on the message size of 240 bytes, previous work hasconfirmed that it is necessary to constrain this message size to a figure of less than 240 bytes,preferably 200 bytes, to avoid the risk of the Radius radios locking up (which can only be resolved bypowering down the radios on site and deleting the message from the RTUs). This issue does not occurwith the key Radio system as it uses the RTS/CTS commands.


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3.6.3 Power Management

The RTU unit shall incorporate a radio power management system. If the auxiliary power supply fails,

the unit shall monitor the time of the failure and after a user settable time (timers shall beprogrammable up to 12 hours and by default the timers shall be set at 4 hours) shall disable the powersupply to the radio. When the auxiliary power supply becomes available again, the RTU shall re-enablethe power supply to the radio.The batteries shall have sufficient capacity to provide an estimated 2.5 days backup time with the Keyradio system attached and 3.5 days with the Radius radio system.

3.7 Cabinet and Circuit Breaker Connection

The circuit breaker shall be connected to the control cabinet by an umbilical cable. The cable shall beprovided in a standard 7m length. An option for an 11m version shall be available.

The cable shall connect the recloser to the cabinet and be designed so as to short out the recloser CTswhen the umbilical cable is unplugged.

3.8 Circuit Breaker Operational and Control Requirements

The following control functions shall be provided both locally and remotely through the SCADA system.At the local control panel the control functions will be provided by separate open and close switches,and separate protection control switches for each function.

The following protection modes shall be accommodated using the control relays programmable logicand standard soft keys:

Normal Automatic Sequence Mode (Auto recloser on)

Live Line Mode (Auto recloser disabled Instantaneous Trip & Lockout only)

o This function shall be enabled using the Hot Line Tag front panel soft key which will

be relabelled as Live Line. Non Auto Mode (Fault Hunting - Auto reclose and Instantaneous protection off) turns off

reclosing and goes to alternate protection group with a delayed curve. As described this modeallows only 1 delayed trip before lockout. This mode will select an alternative protectioncharacteristic/curve using the Reclose Blocked (disables the reclose function) followed bythe selection of the Alt 1 programming group key which will be re-labelled Non AutoSelected

Solid Mode (All Protection off) In switch mode all protection is off but an alarm isconfigurable that will signal the passage of fault current via telecontrol.

o To provide this functionality the Prog 2 key shall be configured and re-labelledProtection Disabled. When using this soft key a message switch mode appears onthe PCD LCD display when initially activated for 3 seconds.

SEF toggle ( SEF In-Out)

The PCD shall be configured so that SEF In/Out can be selected via a re-labelled Prog 1button. This will be such that when the SEF Disabled soft key is selected (LEDilluminated) the SEF is disabled.

Open Recloser is opened via the front panel Red Open button.

Closed Recloser is closed via the front panelBlack Close button.

3.9 Protection Relay Characteristics


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The relay shall meet the functional and environmental requirements detailed in ENA TS 48-5 "ElectricalRelays" and any additional tests which may be deemed necessary due to the closing mechanism andthe proximity of the recloser.

The relay shall provide the following protection functions:

2 pole Instantaneous Overcurrent (OC) and single pole Instantaneous Earth Fault.

2 pole Delayed Overcurrent (OC) and single pole Delayed Earth Fault with the following choice ofcharacteristics:

i) Standard Inverseii) Very Inverseiii) Extremely Inverseiv) American National Standard Institute (ANSI)v) Definite Time Lag

Definite Time Lag Sensitive Earth Fault (SEF) - selected separately from (v) above.

The protection shall remain stable under magnetising inrush and transient harmonic situations.

The protection relay and RTU shall not lose or suffer corruption to any settings; in protection, controllogic or communications in the event of a loss of power to the relay.

3.9.1 Protection Functional Requirements

The PMAR shall be equipped as follows:

trips to lockout with any combination of tripping characteristics

OC/EF and SEF sequences to be independent of each other.

Selectable Sequence Co-ordination.

Individually adjustable Dead Times

Adjustable reclaim times Line check function

Sequence co-ordination.

Cold Load Pickup

Broken conductor protection

Directional Blocking

Voltage Measurement on the incoming terminals with provision for an external CT formeasurement of voltage on the load terminals.

Power Measurement

Additionally the control unit shall allow the circuit breaker to operate like a sectionaliser. It shall provideaccurate fault passage information via its CTs to the RTU whilst remaining in it's closed state. It shallonly change status as a result of a pre-programmed set of events or via remote operation. See Solid

Mode listed in clause 3.9

3.9.2 Range of Protection Settings

Current Setting Ranges: -

Overcurrent 50 to 600 AmpsEarth Fault 10 to 200 AmpsSensitive Earth Fault 4 to 30 AmpsInstantaneous OC and EF with settings as the Overcurrent and Earth Fault Current detailed above.


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Timing Range Settings: -

Overcurrent Time Multiplier - 0.1-1.0 TM

Overcurrent and Earth Fault Time Delay - 0.5 to 3.0 secondsInstantaneous Time Delay - 0 to 2.0 secondsSensitive Earth Fault Time Delay - 0 to 20 secondsDead Time - 1 to 60 secondsReclaim Time - 5 to 60 secondsSequence co-ordination time - 0 to 1 seconds

3.9.3 Indications Required Locally and Remote

Local Indication: -

Number of recloser operations completed since installation.Fault current magnitudes and duration, for each phase, for at least the last 25 recloser operationsPresent load current.

Maximum demand with in the past 12 months plus Instantaneous/half hour average demand.Contact wear on all three phases.Battery condition.Loss of supply

Remote Indication: -

Indication of status, OPEN or CLOSED.Indication of current (three digits for current and five digits for voltage).Operation OPEN or CLOSE.Protection settings.Battery condition.Loss of supplySelect individual protection feature e.g. SEF.

3.9.4 Battery Alarm Condition

During site installation, users are required to carry out a number of tests to prove full communication toour SCADA system. A minimum test function required on all systems shall be the provision of a batteryfail alarm. This alarm condition functionality shall be provided either from a function key on the controlpanel or by the opening of the battery MCB

3.10 Input/Output Expander Card

Provision shall be made for an optional INPUT/OUPUT expander card to provide optically isolated inputcontacts and voltage free output contacts. This may be required with externally provided RTU units oras a conversion medium between non-compliant DMP3 (detailed in Section 3.2.8 Table)communication equipment.

3.11 Type and Routine Tests

The equipment shall be subjected to the tests detailed in ENA TS 41-36, ENA TS 48-5 and applicableBS EN and IEC documents detailed in this document. Appendix A (Self Certif ication ConformanceDeclaration) details the appropriate clauses and sub-clauses of the relevant standards.


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4. References

4.1 External Documentation

The products described within this specification shall comply with the latest versions of the relevantInternational Standards, British Standard Specifications and all relevant Energy Networks AssociationTechnical Specifications (ENATS) current at the time of supply

Reference Title

ANSI Standard C37.60Standard Requirements for Overhead, PadMounted, Dry Vault, and Submersible AutomaticCircuit Reclosers and Fault Interrupters forAlternating Current Systems up to 38 kV

BS EN 62271-1:2008+A1:2011 Common Specification for HV Switchgear and Control

StandardENA TS 41-36 Technical Specification for Distribution Switchgear for

Service up to 36kV (cable and overhead connected)

BS EN 62271-100 High-voltage switchgear and control gear. High-voltagealternating-current circuit-breakers

BS EN 62271-200 High-voltage switchgear and control gear. AC metal-enclosed switchgear and control gear for rated voltagesabove 1 kV and up to and including 52 kV

BS EN 62271-102 High-voltage switchgear and control gear. High-voltagealternating current disconnectors and earthing switches

IEC 60529 Specification for degrees of protection provided byenclosures (IP code)

ENA TS 48-5 Technical Specification for Protection Approval PanelENA TS 98-1 Technical Specification for the Surface Preparation of

New PlantBS EN ISO 2063 Thermal spraying. Metallic and other inorganic coatings.

Zinc, aluminium and their alloysBS EN ISO 1461 Hot dip galvanized coatings on fabricated iron and steel

articles. Specifications and test methodsBS EN14713-1 Zinc coatings Guidelines and recommendations for

the protection against corrosion of iron and steel instructures (General principles of design and corrosion)

LPS 1175 Requirements and testing procedures for the LPCBapproval and listing of intruder resistant buildingcomponents, strong points, security enclosures and free-standing barriers.

4.2 Internal documentationReference Title

4.3 Summary of AmendmentsClause Amendments

Scope Extended scope to encompass the requirements for the PMAR


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to fit into the existing SCADA network2.1 Table of contents added3.1 Environmental operating conditions stated3.2.9 Further information on system earthing conditions added

3.3 PMAR mounting arrangements defined3.3.2 PMAR status condition indication defined3.3.3 Information on HV connection requirements added3.3.4 Information on Local mechanical trip requirements added3.3.7 Acceptable Arc interruption medium changed3.5 Control cabinet requirements extended3.6 Control cabinet requirements extended3.8 CB operational and control requirements extended

3.9 Protection relay requirements extended4.3 Summary of changes section addedAppendix 1 Schedule of requirements section addedAppendix 2 Schedule of technical requirements added including DNP3

mapsAppendix 3 Logistical requirements addedAppendix 4 Self certs updatedAppendix 5 Pre-commissioning testing, routine inspection and

maintenance requirementsAppendix 6 Technical Information Check List

5. DefinitionsTerm Definition

PMAR Pole Mounted Auto RecloserDNP3 (Distributed Network Protocol) is a set of communications

protocols used between components in process automationsystems

SCADA Supervisory control and data acquisition

OC/EF Overcurrent / Earth FaultSEF Sensitive Earth FaultRTU Remote Terminating UnitHot dip Galvanizing Formation of a coating of zinc and/or zinc iron alloys on iron

and steel products by dipping prepared steel orcast iron in a zinc melt


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6. Authority for issue

6.1 AuthorI sign to confirm that I have completed and checked this document and I am satisfied with its contentand submit it for approval and authorisation.

Sign Date

G Hammel Overhead Standards Engineer

6.2 Technical AssuranceI sign to confirm that I am satisfied with all aspects of the content and preparation of this document andsubmit it for approval and authorisation.

Sign Date

S Salkeld Standards Engineer

6.3 DBD AssuranceI sign to confirm that this document has been assured for issue on to the DBD system

Sign Date

R McHaddan DBD Administrator

6.4 ApprovalApproval is given for the content of this document

Sign Date

C HoldsworthStandards and AssessmentsManager

6.5 AuthorisationAuthorisation is granted for publication of this document

Sign Date

M Nicholson Head of System Strategy


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Appendix 1 Schedule of Requirements

Item Commodity Code Description

1 216123 ** 11/20kV 630A 12.5kA PMAR2 216130 33kV 800A 16kA PMAR

**Logistically Northern Powergrid has a preference to receive units capable of dual voltage operation at both 11and 20kV, but this does not preclude the offer of units for single voltage operation.


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Appendix 2 Schedule of Technical Parameters

The Technical parameters have been specified within the main body of this specification


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Document reference NPS/001/009Version:- 3.0 Date of Issue:- Oct 12 Page 17 of 29


Appendix 2a

DNP 3 Point Assignment

DNP CONTROLS

PointNo Tag Description Channel Type Count

On-Time

Off-Time Queue Clear

0 N1_DO_00 Open 0 Direct Operate 1 2000 500 No No

0 N1_DO_01 Closed 1 Direct Operate 1 2000 500 No No

1 N1_DO_02 Prot OFF (Switch Mode) 2 Direct Operate 1 2000 500 No No

1 N1_DO_03 Prot ON (Switch Mode) 3 Direct Operate 1 2000 500 No No

2 N1_DO_04EF Prot Off (GroundBlock) 4 Direct Operate 1 2000 500 No No

2 N1_DO_05EF Prot On (GroundUnblock) 5 Direct Operate 1 2000 500 No No

3 N1_DO_06 SEF Off (Block) 6 Direct Operate 1 2000 500 No No

3 N1_DO_07 SEF On (Unblocked) 7 Direct Operate 1 2000 500 No No

4 N1_DO_08 A/R Off (Block) 8 Direct Operate 1 2000 500 No No

4 N1_DO_09 A/R ON (Unblocked) 9 Direct Operate 1 2000 500 No No

6 N1_DO_DCB O DCB Open (UL01 Off) 11 Direct Operate 1 2000 500 No No

6 N1_DO_DCB C DCB Closed (UL01 On) 12 Direct Operate 1 2000 500 No No


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Appendix 2b

DNP CONTROLS

PointNo Tag Description Channel Type Count

On-Time

Off-Time Queue Clear Xcell

TBC N1_DO_S1 OSP 1 Open (UL02off) 13 Direct Operate 1 2000 500 No No Three

TBC N1_DO_S1 CSP 1 Closed (UL02on) 14 Direct Operate 1 2000 500 No No Three

TBC N1_DO_S2 OSP 2 Open (UL03On) 15 Direct Operate 1 2000 500 No No Three

TBC N1_DO_S2 CSP 2 Closed (UL03off) 16 Direct Operate 1 2000 500 No No Three

50 ViaRadius DO_50 Update OSTN 10 Direct Operate 1 2000 500 No No Three

KeyRequired by(Northeast)

Overall availability to Match(Yorkshire)


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Appendix 2 C

DNP DIGITAL INPUTS Nulec ABBPoint No Point Value

0 N1_DI_0 OPEN1 0

0 N1_DI_0 CLOSED0 1

1 N1_DI_1 PROTECTION OFF - Alarm 82 0 0

1 N1_DI_1 PROTECTION ON - Alarm 82 1 1

2 N1_DI_2 EF PROT DISABLED Not Used

2 N1_DI_2 EF PROT ENABLED Not Used

3 N1_DI_3 SEF PROT DISABLED0 1

3 N1_DI_3 SEF PROT ENABLED1 0

4 N1_DI_4 AUTO RECLOSE OFF 0 1

4 N1_DI_4 AUTO RECLOSE ON 1 0

5 N1_DI_5 DCB OPEN - Alarm 810 Not Known

5 N1_DI_5 DCB CLOSED - Alarm 811 Not Known

6 N1_DI_6 OVER CURRENT TRIPNot Used

7 N1_DI_7 EF TRIPNot Used

8 N1_DI_8 SEF TRIPNot Used

9 N1_DI_9 LOCKOUT OPERATED1 1

9 N1_DI_9 LOCKOUT CLEAR 0 0

10 N1_DI_10 LOCAL0 1

10 N1_DI_10 REMOTE1 0

11 N1_DI_11 AUX SUPPLY OFF0 0

11 N1_DI_11 AUX SUPPLY ON1 1

12 N1_DI_12 SWITCH GR FUNCTION OFF0 Not Known

12 N1_DI_12 SWITCH GR FUNCTION ON1 Not Known

50 Via Radius DI_50 COMMS FAIL

51 Via Radius DI_51 DEVICE RESTART

65 Via Radius DI_65 DIGMAP INPUT

66 Via Radius DI_66 DIGMAP INPUT

TBC X + 1 Spare

TBC X + 2 Spare


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Appendix 3 Logistical Requirements

1.0 Protection and Packaging

The equipment shall be suitably packaged and protected with each unit marked with the followinginformation:

(i) Manufacturers name.

(ii) Manufacturers product type and unique unit serial number.

(iii) Description of item.

(iv) Date of supply.

(v) Company order number.

(vi) Purchasing Companies Stock Catalogue Number.

(vii) Weight of each unit.

2.0 Test Certificates

All circuit breakers shall be supplied complete with a copy of the routine tests carried out on the equipmentduring its manufacture. The test cards shall be enclosed in a waterproof document holder and be tied to therecloser.


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Appendix 4 - Self Certification Conformance DeclarationPole Mounted Auto-reclose Circuit Breakers shall comply with the latest issues of the relevant ENA technical specificationsStandards.

This check sheet identifies the clauses in the aforementioned Standards relevant to Pole Mounted Auto-recloser Circuit BrYEDL distribution networks.The manufacturer shall declare conformance or otherwise, clause by clause, using the following levels of conformance dec

Conformance declaration codesN/A = Clause is not applicable/ appropriate to the productCs1 = The product conforms fully with the requirements of this clauseCs2 = The product conforms partially with the requirements of this clauseCs3 = The product does not conform to the requirements of this clause

Cs4 = The product does not currently conform to the requirements of this clause, but themanufacturer proposes to modify and test the product in order to conform.

Manufacturer:Product Reference:

Name: Signature: Date:

Instruction When Cs1 code is entered When any other code is entconformance shall be entere

Prefix each remark with theas appropriate


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Type Testing

Standard Clause/Sub-clause

Requirement ConformanceCode

Remarks

IEC 60694

IEC 62271-100

ENA TS 41-36

6.2

6.2

Table 1a

Dielectric

IEC 62271-200

ENA TS 41-18

6.2.9 Partial Discharge

IEC 60694

IEC 62271-100

IEC 62271-200

6.4

6.4

6.4

Measurement of Main CircuitResistance

IEC 60694

IEC 62271-100

IEC 62271-200

6.5

6.5

6.5

Temperature Rise

IEC 60694

IEC 62271-100

IEC 62271-200

6.6

6.6

6.6

Short-time and Peak WithstandCurrent


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Type Testing Continued

Standard Clause/Sub-clause Requirement ConformanceCode

Remarks

IEC 60694

BS EN 662271-100

BS EN 62271-200

IEC 60529

ENA TS 41-36

6.7

6.7

6.7

1.5.13

Verification of Protection -Minimum of IP34D MechanicalImpact

IEC 60694

BS EN 62271-100

BS EN 62271-200

6.8

6.8

6.8

Tightness Test

IEC 60694BS EN 62271-100

6.96.9

EMC Test

BS EN 62271-100

BS EN 62271-200

6.101.2.4

6.102

Mechanical Operations - class M2 10,000 Operating Cycles

BS EN 62271-100

BS EN 62271-200

BS EN 62271-102

6.102

6.102

6.105

Mechanical Strength kinematicchain between moveable contactsand position indicating device

BS EN 62271-100 6.101.3 Low and High Temperature TestsIEC 50056IEC 60129

6.101.56.103

High Temperature Test subject todesign

BS EN 62271-100

IEC 6271-102

6.101.5

6.103

Operation Under severe Iceconditions


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Type Testing Continued

Standard Clause/Sub-clause Requirement ConformanceCode

Remarks

ANSI /IEEEC37.60

Table 4 Short Circuit Making and BreakingTests

BS EN 62271-100 6.111 Cable Charging Current Break TestBS EN 62271-100 6.111 Line Charging Current Break testsBS EN 62271-200

ENA TS 41-36

6.106

1.5.101

Internal Arc

BS EN 62271-200 6.103 Gas Filled Compartment Pressurewithstand

ENA TS 98-1 - Finish

Protection Relay Type Testing Atmospheric Environment Requirements

Standard Test Requirement ConformanceCode

Remarks

IEC 60068-2-1 Temperature Cold Heat -25C, 96 hours , operate andstorage

IEC 60068-2-2 Temperature Dry Heat -70C, 96 hours, operate andstorage

IEC 60068-2-3 Relative HumidityIEC 60068-2-30

Relative HumidityAlternative

100% RH, 40C, 56 cycles of+25C to +55C

IEC 60529 Enclosure IP54


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Protection Relay Type Testing Continued Mechanical Environment Requirements


Remarks

IEC 60255-21-1 Vibration Response and Endurance Class 1IEC 60255-21-2 Shock Response and Endurance Class 1IEC 60255-21-2 Bump Class 1IEC 60255-21-3 Seismic Class 1Protection Relay Type Testing Continued Electrical Requirements


Remarks

IEC 60255-6 48 V DC SupplyVoltage

Table 1, 38.5 to 53 V with amaximum of > 60 V

IEC 60255-11 Voltage Dips, ShortInterruptions andVoltage ImmunityTest

10ms interruption, 12% AC ripple

DC Supply VoltageGeneral

Ramp up and down over 1 minuteor similar

ENA TS 48-4 Low Burden TripRelays

Captive discharge ENA 1

ENA TS 48-4 High Burden TripRelays

Captive discharge ENA 1

ENA TS 48 5 Thermal requirementof CT inputs

2.4 x In, continuous3.0A, 20 mins3.5A, 10 mins4.0A, 5 mins5.0A, 3 mins6.0A, 2 mins

ENA TS 48 5 Thermalrequirements of VTinputs

120% of Vn, continuous

ENA TS 48 - 5 Dielectric Test values selected according to


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insulation voltage. High Impedancecirculating current schemes, test at2.5kV. Circuits connected toinstrument transformers orbatteries, rated insulation not below250V, test at 2.0kV. Open outputrelay contacts 1kV.

IEC 60255 - 5 Impulse Voltage Test at 5kV, 0.5J

Electromagnetic Compatibility (EMC) Requirements


Remarks

IEC 60255 Oscillatory waves

immunity test (HighFrequencyDisturbance)

Class III, 1MHz 2.5kV common, 1

kV diff. Applied to all ports, exceptdiff on comms at the discretion ofthe approving panel

IEC 60255 ElectrostaticDischarge ImmunityTests

Class III. 6kV, contact, 8kV air.Applied to the enclosure

IEC 60255 Radiatedelectromagnetic FieldDisturbance test(RFI)

10V/m, 1kHz, 80 to 1000MHzsweep and 80, 160, 450, 900 Mhzspot frequencies. Applied to theenclosure

IEC 60255 Radiatedelectromagnetic fieldfrom digital radiotelephones immunity

test

10V/m, 900 and 1890Mhz. Appliedto the enclosure

IEC 60255 Electrical fasttransient/burstimmunity

Level IV, 4kV. Applied to all ports

Surge immunity Level III, 2kV common, 1kV diff.(Level 4, 4kV, 2kV preferred for CTand VT inputs) Applied to all ports


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IEC 60255 Conductedelectromagnetic fielddisturbance tests

10Vrms, 80% mod, 1kHz. 0.15 to80MHz sweep and 27 and 68 MHzspot frequencies. Applied to allports

EN 61000-4-8(IEC 61000-4-8)

Power frequencymagnetic fieldimmunity test

1000 A/m for 1 sec and 100 A/m for1 min. Applied to all ports

EN 61000-4-9(IEC 61000-4-9)

Pulse magnetic fieldimmunity test

6.4/16 s magnetic pulse, 1000A/m. Applied to enclosure. Notcurrently mandatory


Remarks

EN 61000-4-10(IEC 61000-4-10)

Damped oscillatorymagnetic field

immunity test

0.1 and 1.0 MHz, 100A/m. Appliedto the enclosure. Not currently

mandatoryIEC 60255-22-7&EATS 48-5

Power Frequency Level 4, 300V for 1 s at 50Hz,common mode. Appendix A, EATS48-5 for differential, at discretion ofpanel

IEC 60834-1 &IEC 60834-2

Communicationchannel Noiseimmunity

IEC 60255-25 Conducted andradiated Emission

Class A, conducted, power supply:0.15 to 0.5 MHz, 79dB(V) quasipeak, 66dB (V) average,0.5 to 30 MHz, 71dB(V) quasipeak, 60dB (V) average.Radiated, enclosure at 10M:

30 to 230 MHz, 40dB(V) quasipeak,230 to 1000 MHz, 47dB(V) quasipeak,


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Appendix 5 - Pre-commission testing, Routine Inspection andMaintenance requirements

Suppliers shall provide details of the recommended pre-commission testing and inspection required. They shallalso provide information regarding periodic inspection and maintenance requirements to be undertaken duringthe lifetime of their product.

Detailed inspection and maintenance instructions shall be also be provided.


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Appendix 6 - Technical Information Check List

The following information shall be provided by the supplier for review by Northern Powergrid. Additionalinformation shall be provided if requested.

RequirementProvided

(Y/N)

Full product descriptions and part number/reference

Complete set of drawings for each item

Appendix 2 - Proposed DNP3 map proposals to mimic the existing Northern Powergrid DNP3 map

Appendix 3 Logistical requirements , protection and packaging, test certificates

Appendix 4 completed self-certification conformance declaration

Appendix 5 Pre-commissioning testing, routine Inspection and maintenance requirements

Type test evidence

Manufacturing routine test plan

Instructions/Manuals for transportation & handling, installation, maintenance and disposal

Spares availability list

ISO:9001, ISO:14001 and ISO:18001 certificates

Documents

Technical Specification for 11kV, 20kV and 33kV Pole Mounted Auto-Reclose Circuit Breakers NPS001_009