IEEE SCV PSES 62368-1 June 26 2012 · PDF fileStructure of IEC 62368-1 0 Principles 1 Scope 2 Normative references 3 Terms, definitions and abbreviations 4 General requirements 5 Electrically-caused

UL and the UL logo are trademarks of UL LLC © 2012

IEC 62368-1

The Path Forward Towards Full Global

Implementation…

Thomas BurkePrincipal Engineer – ITE/High Tech

UL LLCJune 26, 2012

Outline

IntroductionRecap: IEC 62368-1Status: IEC 62368-1 & National/Regional VersionsLikely Publication/Adoption ScenariosRelated Considerations/ChallengesQ&A

2

Introduction

Objectives

• Help facilitate knowledge-sharing on the Standard and related considerations

• Help alleviate high tech manufacturers’ and stakeholders’ concerns with the new Standard.

• Concentrate on associated implementation considerations as we move closer towards global implementation.

• But, not a detailed technical review of 62368-1…

Questions, perspectives & feedback are encouraged!

4

Recap: IEC 62368-1

Copyright © 2012 UL LLC All Rights Reserved. Do Not Reproduce without Permission.

What is it?

IEC 62368-1, Audio/Video, Information Technology and Communication Technology Equipment – Safety –Requirements

• Published: January 2010

New Safety Standard for

• Audio/Video Equipment, including professional, and musical instruments,

• Consumer Electronics,• Information Technology Equipment, • Office Appliances, and• Communication Technology (Telecom) Equipment

6


What is it?

IEC 62368-1 covers Scopes of previous (legacy) standards:

• IEC 60065, Audio, Video & Similar Electronic Apparatus –Safety

• IEC 60950-1, Information Technology Equipment – Safety

7


What is it not?

Not a simple merger of IEC 60065 & 60950-1!

• Although many common elements…

Not a generic (free form) HBSE Standard!

• Standard is only applicable to products falling under its Scope, w/examples in Annex A

• Annex A examples are same found in scopes of 60065 & 60950-1

• Standard has both requirements and compliance criteria, either performance-based or prescribed constructions.

• Standard is fully compatible with a TRF & IECEE CB Scheme, and 3rd Party Mark Certification Programs!

8


What is it not?

Not a Risk-based Standard!

• Risk Analysis not required (aka, IEC 60601-1) during application & certification.

• Decision on application of requirements does not involve risk considerations...

• Some Risk Analysis was used by IEC TC108 to develop the actual requirements, e.g., levels/limits associated with Class 1, 2 & 3…

9


Why?

Less distinction today, in the recent past, and in the future between product categories:

• Similar technology,

• Similar marketing/distribution channels,

• Similar use environments,

• Similar users.

10


Why?

Therefore, desire for a single safety standard that

• Applies to a broad range of HT products• Both is technology independent, and allows for introduction of

new technology easier• Allows for more design freedom• Minimizes need for national/regional differences• Preserves information on the rationale for requirements• Stable, understandable & user friendly; and• Ultimately leads to design and manufacture of safe products!

11


Origin

12

13


Resulting objectives of IEC TC108 circa year 2002, through today…

Clearly identify the hazard being addressed; Clearly state principles upon which hazard is addressed; Performance-based (but allow prescribed construction

options when they have a proven track record); Type test standard, useful to designers, but also suitable

to assess conformance by third parties;Preserve basis of requirements (via rationale document,

IEC/TR 62368-2); and Meet above in a ‘user friendly’ manner...

14

How?

Developed by IEC TC108’s Hazard Based Standard Development Team (HBSDT) using

• Hazard Based Safety Engineering (HBSE),

• IEC Horizontal, Basic Safety & Group Safety Standards (e.g., IEC 60664-1, 60085, etc.),

• Research, and

• Field Data.

Individual Hazard Sub-Teams:Electric Shock

• Fire

• Mechanical

• Radiation

• Burn

• Chemical

• Integration & Editing

15


Hazard-based Safety Engineering

HBSE = Safety science discipline formalized over the last 15 - 20 years.

Key tools: • 3 Block Models• HBSE Application Process

16


Three Block Model for Injury (or Harm)

17


Three Block Model for Safety

18


HBSE Application Process

19

e.g., via measurements to determine energy levels, Class 1, 2 or 3...

e.g., via performance tests, or use of allowed prescribed constructions, including safety critical components…

e.g., via test compliance criteria, or confirmation of compliance w/requirements for prescribed constructions…

e.g., via initial review of product & schematics….

Application Practice of 62368-1during 3rd party certification…

e.g., via detailed product review and analysis of design, construction & circuits, including identification of safeguards, such as insulation & critical components…

App

licat

ion

by P

rodu

ct D

esig

ners

/ En

gine

ers,

aka

Man

ufac

ture

rs, O

DM

s,

etc…

Structure of IEC 62368-10 Principles

1 Scope

2 Normative references

3 Terms, definitions and abbreviations

4 General requirements

5 Electrically-caused injury

6 Electrically-caused fire

7 Chemically-caused injury

8 Mechanically-caused injury

9 Thermal-burn injury

10 Radiation

Annexes (partial)

A – Examples of equipment within scope

B – Normal operating condition, abnormal operating condition, and single fault condition tests

F – Equipment markings, instructions and instructional safeguards

G – Components

M – Batteries and fuel cells

Q – Interconnection with building wiring

V – Determination of accessible parts

20


Added Benefit: More emphasis on Performance Requirements, i.e., Compliance determined by Test

Standard via performance-based approach allows for more design options (design freedom) than prescriptive (construction) requirements.

Example - Bottom Enclosure Openings• Performance Option: Hot Flaming Oil Test

• Construction Options (w/ proven track record in legacy standards):

• 2x2 mm mesh, • perforated panels, • openings 1mm in length regardless of length, etc.

21


Added Benefit: Consideration of Innovative Designs

Ongoing Challenge:

Even in performance-oriented standards there remain situations when an innovative technology, material or method of construction falls on the edge or outside the scope or objectives of the Standard.

Additional engineering & scientific thought is required before sound determination can be made a product complies with the overall principles of the Standard and meets a minimum level of safety consistent with the Standard.

Fortunately, IEC 62368-1 has a provision that helps facilitate this process of determining compliance!

22


Sub-clause 4.1.5, Constructions Not Specifically Covered

IEC 62368-1, Sub-clause 4.1.5:

“Where the equipment involves technologies and materials or methods of construction not specifically covered in this standard, the equipment shall provide safeguards not less than that generally afforded by this standard and the principles of safety contained herein. ”

23

Fundamental Investigative ToolsFor Innovative Products

24

Status: IEC 62368-1 & National/Regional Versions

820317082

4,20030,000

$ 2,000,000

years

plenary meetings

P-members

experts

sub-team meetings

man-days

man-hours

USDAs of Jan 2010

Estimated Development Cost…


IEC 62368-1, Edition No. 1 & National/Regional Versions

Published as IEC Standard in January 2010

• Canada, Denmark, Netherlands, South Africa & United States adopted national versions as allowed alternative standards…

• Europe (CENELEC) – not supported.• Wanted further refinement of requirements….

• Asia – under study by multiple countries

27


IEC 62368-1, Edition No. 1

IECEE CB Scheme for IEC 62368-1 activated under OFF/TRON

• TRF available – UL is originator

• Multiple UL offices established as CBTLs

• IECEE CTL activity beginning, including development of test equipment list…

UL can investigate to IEC 62368-1 and provide IECEE CB Reports & Certificates!

UL has issued the world’s first IECEE CB Test Certificate & Test Report for 62368-1!

28

OFF48%

TRON14%

HOUS21%

LITE4%

MED3%

INST2%

MISC2%

TOOL2%

MEAS1% EMC

3%

Top 10 Product Categories in 2010

OFF = IEC 60950‐1TRON = IEC 60065


CAN-CSA C22.2 No 62368-1/ANSI-UL 62368-1, Edition No. 1Canadian/U.S. Bi-national Standard• February 2012 publication• SCC & ANSI Approved in Canada & U.S.! • Follows IEC TC108 recommendation for countries to adopt

Edition No. 1 to gain real experience using the standard to allow for further improvement/refinement in Edition No. 2.

• Gives us head start on development of Edition No. 2 of CSA/UL 62368-1!

National Difference (ND) content developed by Technical Harmonization Committee (THC) of SDOs & Manufacturers from related industry sectors…

30

THC MembersKevin Ravo - THC ChairBarbara Davis - THC Secretary

Canon USATom Keber

CSAMichael Tang

Eng Yap

DellLal Bahra

HPRich Pescatore

IBMBob Griffin

IntelLeo Heiland

LittelfusePhillip Havens

Sony ElectronicsJulio Posse

Toshiba AmericaJeff Howell

ULTom Burke

Craig Sato

31


62368-1 THC Meetings & Related Milestones• March 3, 2009: Kickoff Teleconference• November 18-20, 2009: Kickoff Meeting (San Jose, CA) – Establishment/refinement

goals/objectives, initial review of potential NDs, and Task Teams established.• January 2010: IEC 62368-1, Edition No. 1 published• February 23-25, 2010: Meeting (San Jose, CA) – Continued work on draft standard and

review of task team work to date.• May 14, 2010: Teleconference• August 24-26, 2010: Meeting (San Jose, CA) – Continued work on draft standard and

review/refinement of task team work to date.• Sept. 2010- Feb. 2011: National Differences refined & proposed by task teams to THC• March 1-3, 2011: Meeting (Chandler, AZ) – THC review of draft standard.• April 28, 2011: Draft standard posted on UL CSDS for preliminary (public) review &

circulated to CSA TSC• June 13, 2011: Preliminary (public) review comment deadline• July 12-13, 2011: Meeting to discuss & respond to preliminary (public) review comments

(San Jose, CA)• September 23, 2011: Draft standard circulated for STP vote.• November 17, 2011: THC Closing Teleconference• December 12, 2011: STP voting deadline - Standard passed!• February 17, 2012: CSA/UL 62368-1 Edition No. 1 published !

32


CSA/UL 62368-1, Edition No. 1

CSA/UL Content = IEC Requirements + National Differences (NDs)

DR – Based on the national regulatory requirements.D1 – Based on basic safety principles & requirements, elimination of which would compromise safety for consumers & users of products.D2 – Differences from IEC requirements based on existing safety practices that reflect national safety practices.DC – Based on the component standards and will not be deleted until a particular component standard is harmonized with the IEC component standard.DE – Based on editorial comments or correction.

33


National Differences in CSA/UL 62368-1

Examples:

• National Regulations, e.g., National Electrical Code (Annex DVA)• Permanently Connected Equipment (Annex DVH)• Power Distribution Equipment (Scope)• Electrically-caused fire due to overvoltage from power line

crosses (Annex DVI)• Acoustics associated with communication technology (telecom)

equipment (Annex DVJ)• Components (Annexes DVE –> DVG)

• DVE ≈ Annex P.1 (Mandatory) of UL 60950-1

• DVF ≈ Annex P.2 (Alternative to IEC components)

• DVG ≈ Annex P.2 (Alternative, general)

34

Good News –> Most NDs are similar in content/impact as UL 60065 & UL 60950-1!

35

UL has certified the world’s first product to CSA/UL 62368-1!

UL now can offer both Listing & Recognition for Canada & U.S. to CSA/UL 62368-1 !

UL now can offer both Listing & Recognition for Canada & U.S. to CSA/UL 62368-1 !

Likely Publication/Adoption Scenarios


Edition No. 2

Edition No. 2 of IEC 62368-1 • Currently at CDV stage (108/479/CDV)

• First CDV did not pass TC108 vote successfully…• May vote & June meeting

• Concern with External Ignition (Candle Flame), some SPD applications, etc…

• Second CDV to be issued as a result of further refinement accomplished at June TC108 Meeting…• CDV2 = Oct 2012

• Second Vote = January 2013 --> FDIS --> IS

• Target publication date --> remains (H2) 2013 !

37


Edition No. 2

Assuming Ed No. 2 of IEC 62368-1 published in 2013:

• Expectation -> Europe will adopt Ed. 2 as EN 62368-1 • Now that standard is further refined and most of the

previously expressed concerns have been addressed.

• EN would be published in the EU Official Journal• Manufacturer who uses a LV harmonized standard in the design & production

of electrical equipment is presumed to be in conformity with the essential requirements of the LV Directive…

• Ed No. 2 will result in more universal adoption & implementation of full global transition plan from legacy standards since Europe & NA two key markets….

38


Transition (subject to change) :Legacy AV/CE/ITE Standards IEC 62368-1

Likely Transition Scenario…

Next versions of IEC 60065 (Ed 8), IEC 60950-1 (Ed 2, Am 2) & IEC 62368-1 (Ed 2) will be published in 2013…

• Europe: Next versions of EN 60065, 60950-1 & 62368-1 published in 2013…

• CAN/US: Next versions of CSA & UL 60065, 60950-1 & 62368-1 published in 2014 or 2015…

All new certifications of A/V, IT & CT Equipment likelyto be required to comply with an IEC 62368-1 based Standard beginning in 2018….

39

40

41

Disclaimer goes here

Likely Transition Scenario…

Today ≈ 2013/2014 ≈ 2018 & beyond

42

60065 6095062368-1 Ed 1

60065 (incl Ed 8)60950 (incl Ed 2, Am 2)

62368-1 Ed 162368-1 Ed 2

62368-1 Ed 2

UL.com Effective Date Information

43

Related Considerations/Challenges

Components & Supply Chain

Concern:

End product manufacturers adopting IEC 62368-1 early will not have enough component suppliers with components investigated/certified to IEC 62368-1.

45

Components & Supply Chain

IEC 62368-1:

4.1.1 Application of requirements and acceptance of materials, components and subassemblies

Components and subassemblies that comply with IEC 60950-1 or IEC 60065 are acceptable as part of equipment covered by this standard without further evaluation other than to give consideration to the appropriate use of the component or subassembly in the end-product.

Existing provision should ease both transition & implementation !

46

Components & Supply Chain (cont’)

IEC 60065 & 60950 (preliminarily supported by TC108, June 2012!) :

3.4 Components and subassemblies that comply with IEC 62368-1, Ed No. 2 and later are acceptable as part of equipment covered by this standard without further evaluation other than to give consideration to the appropriate use of the component or subassembly in the end-product.

Would allow for backwards compatibility!Further ease transition & implementation!

47

Codes & Regulations

NFPA 70-2011, National Electrical Code (NEC)

• Numerous references to UL 60950-1

• Currently in Year 2014 Review Cycle

• Comments on initial Report on Proposal (ROP) due October 17, 2012

• UL will be submitting Comments to update references in NEC (and eventually NFPA 75…)

48

Codes & Regulations

OSHA NRTL Program

• UL 62368-1 being added to Scope of UL NRTL

• NRTL system inherently accommodates updated & new standards

• Do not anticipate the same issues as with 60601-1 Third Edition since Risk Analysis not part of application of UL 62368-1.

49

Interpretations & Interpretation Systems

New Standard = New Interpretations

However, being more performance-oriented, the need for so many interpretations should (may) be minimized…

Also, IEC TR 62368-2 exists now …

50


IEC TR 62368-2 – Rationale Document• Explains origin and/or background of requirements…• Will contain more detail in Edition 2 !

51

Disclaimer goes here


52

ANSI/UL/IEC Standard = IEC 62368-1 + TR 62368-2 + NDs

IEC TC108 Interpretations(shows intent of IEC TC)

IECEE CTL Decisions (applied in IECEE CB Scheme)

Regional & National Interpretations/Decisions(Required locally/regionally, e.g., CENELEC OSM, or formal

ANSI Interpretations by SDO…)

Individual Certification Org Interpretations/Decisions(e.g., UL Technical Guidance Documents,

Certification Requirement Decisions, CSA TILs…)

New UL Category Structure for 62368-1 *

Main Guide (“Title Only”) Category (new):• Audio/Video, Information & Communication Technology

Equipment (AZOA)

Level 1 (Sub) Categories (new):• Audio/Video Equipment (AZOE)• Information Technology Equipment (AZOT)• Communication Technology Equipment (AZOJ)

53* Corresponding cUL (CCN7/8) categories for Canada also established.

New UL Category Structure for 62368-1 (cont’)

Component Recognition (CCN2/8) only:• High Technology Components – Component (AZOP2)

54* Corresponding cUL (CCN7/8) categories for Canada also established.

All HT components, except power supplies, placed in AZOP2…

UL Category Structure

Level 1 (Sub) Categories (new):• Power Supplies, Audio/Video, Information &

Communication Technology Equipment (QQJQ)

• Power Supplies for use in Audio/Video, Information & Communication Technology Equipment – Component (QQJQ2)

55

Knowledge Exchange & Training Opportunities

IEC TR 62368-2 – Rationale Document• Explains origin and/or background of requirements…

56

Knowledge Exchange & Training OpportunitiesUL.com -> Home > Industries > High Tech > Computing and Peripherals > New Hazard Based Standard: IEC 62368-1

57


UL.com -> Home > Industries > High Tech > Computing and Peripherals > New Hazard Based Standard: IEC 62368-1

• White Paper

• Instructor & On-line Training

• Comparison Matrixes (62368-1 vs. 60065/60950-1)

• 30 + Technical Briefs on variety of 62368-1 Topics

58


59

LinkedIn HBSE Group: Ongoing 62368-1 Updates. Please join !

60

More Information

www.ul.com -> High Tech

61

Q&A

THANK YOU!