Update on IEC 62368-1, AV/ITE Legacy Standards & Related Topics · 2018-02-08 · such as...

UL AND THE UL LOGO ARE TRADEMARKS OF UL LLC © 2013. ALL RIGHTS RESERVED

Update on IEC 62368-1, AV/ITE Legacy Standards

& Related Topics

Thomas Burke,Principal Engineer –ICT/High TechUL LLC

Introduction

UL AND THE UL LOGO ARE TRADEMARKS OF UL LLC © 2013. ALL RIGHTS RESERVED.

Topics

Introduction IEC 62368-1: Refresher A few things about 62368-1 you may not know… Status: IEC 62368-1, IEC 60950-1, IEC 60065 &

National/Regional Versions What’s New? IEC 62368-1, IEC 60950-1 Likely Publication/Adoption Scenarios What’s Next? Q&A

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IEC 62368-1: Refresher


What is it?

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

• IEC TC108 started project in year 2002, using ECMA 287 (Safety of Electronic Equipment) as seed document.

• Ed. No. 1 published January 2010 eight years later…

New Safety Standard for

• Audio/Video Equipment, including consumer electronics, professional equipment, and musical instruments,

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

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Why?

Less distinction today, in the recent past, and in the future among high-tech products:

• Similar technology,

• Similar marketing/distribution channels,

• Similar use environments,

• Similar users.

Therefore, need 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!

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What is it?

A hazard-based standard. A performance-oriented standard.

Covers Scopes of previous (legacy) standards:

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

• IEC 60950-1, Information Technology Equipment – Safety

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HBSE Application Process

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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…


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!

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What is it not?

Not a Risk-based Standard!

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

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

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

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A few things about 62368-1 you may not know yet… but first, let’s look at its structure.


Structure of IEC 60950-10 Principles

1 General, incl. Scope, Terms, Components, etc.

2 Protection from hazards

3 Wiring, connections and supply

4 Physical requirements

5 Electrical requirements and simulated abnormal conditions

6 Connection to telecommunication networks

7 Connection to cable distribution systems

Annexes (partial listing)

A – Tests for resistance to heat and fire

B – Motor tests

C – Transformers

D – Measuring instruments for touch-current

F – Measurement of clearances and creepage distances

G – Alternative method for determining minimum clearances

Q – Voltage dependent resistors

T – Guidance on protection against ingress of water

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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 listing)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

T – Mechanical strength tests

V – Determination of accessible parts

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Clause 0 – Principles of this product safety standard

• Clause 0 serves as an excellent primer on both HBSE and the approach IEC TC108 took with the Standard!

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Clause 1 – Scope

• The examples of products covered by the Standard are not in Clause 1, but Annex A.

• Annex A in Ed. Nos. 1 & 2 of IEC 62368-1 has the exact same scope examples as in IEC 60065 & IEC 60950-1 as to not cause any confusion during transition!

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Clause 2 – Normative references

Unlike IEC 60950-1, Normative references in IEC 62368-1 are included in Clause 2, the structure more typically found in IEC Standards.

• In IEC 60950-1, normative references are in Annex P…

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Clause 3 – Terms, definitions and abbreviations

Many familiar terms used in IEC 60950-1 are no longer in IEC 62368-1!

Examples:• SELV -> ES1• Telecommunication Network -> External Circuit• TNV -> ES1 or ES2, depending on transient ID No.• User (or Operator) -> Ordinary Person• Service Personnel -> Skilled Person• (RAL knowledgeable) -> Instructed Person

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Also, remember - Annex W, Comparison of terms used in this standard

Compares terms used in IEC 62368-1 with terms used in:• IEC 60664-1: Insulation coordination• IEC 61140: Protection against electric shock• IEC 60950-1: Information technology equipment• IEC 60728-11: Cable networks• IEC 62151: Equipment connected to telecommunications

networks• IEC 60065: A/V equipment

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Clause 4 – General requirements

IEC 62368-1 accommodates legacy components!

4.1.1 - Components & subassemblies that comply with IEC 60950-1 or IEC 60065 are acceptable as part of equipment covered by [62368-1] without further evaluation other than to give consideration to the appropriate use of the component or subassembly in the end-product !

Backwards compatibility statements now also added to IEC 60065 & IEC 60950-1!

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Clause 5 – Electrically-caused Injury

Clearance calculations at face value appear more complicated, but they also should allow for more design freedom/flexibility!

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Clause 6 – Electrically-caused fire

Two Safeguards are required to prevent electrically-caused fire

• Basic Safeguard – Use of suitably rated (thermal) materials under Normal & Abnormal operating conditions.

• Supplementary Safeguard – Additional safeguard(s) provided for Single Fault considerations

For the Supplementary Safeguard (for PS2 & PS3),two alternative paths:

a. Prevention of ignition b. Control of fire spread

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Clause 6 – Electrically-caused fire (cont.)

Prevent ignition (aka single fault conditions) ≈ IEC 60950-1 Method 2 (4.7.1)

• 4000W limitation (250 V x16 A)

Control fire spread (aka fire enclosure) ≈ IEC 60950-1 Method 1 (4.7.1)

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V-1 5V60950-1 ≤ 18 kg > 18 kg62368-1 ≤ 4000 W > 4000 W


Clause 7 – Chemically-caused injury (Ed 2 – Cl. 7 - Injury caused by hazardous substances)

Only hazard clause (Cl. 5 – 10) in IEC 62368-1 that does not classify sources of potential injury by Class !

• Not practical to try to do since various forms and quantities of chemicals/hazardous substances used in equipment covered under scope.

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Clause 8 – Mechanically-caused injury

• The ‘K Factor’ concepts for classification of moving fan blades as MS1, MS2 or MS3 came from the UL Standard for Electric Fans, UL 507.

• In Edition No. 2, further distinction will be made between plastic blades and blades made of non-plastic materials….

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MS1 MS2 MS3


Clause 9 – Thermal burn injury

Touch temperature limits in IEC 62368-1 are in some cases lower than IEC 60950-1.• Based on IEC Guide 117, Electrotechnical

equipment –Temperatures of touchable hot surfaces.

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Clause 10 - Radiation

Ed. No. 2 of IEC 62368-1 has Acoustic Radiation requirements for Personal Music Players closer aligned with the existing requirements in Europe.

• EN 50332-1, -2 Sound system equipment. Headphones and earphones associated with portable audio equipment. Maximum sound pressure level measurement methodology and limit considerations.

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Annex F - Equipment markings, instructions, and instructional safeguards

Annex F outlines standardized approach for markings & related instructional safeguards.

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Also, don’t forget IEC/TR 62368-2 & ECMA TR/106!

IEC/TR 62368-2: Audio/video, information & communication technology equipment – Part 2: Explanatory information related to IEC 62368-1• Essential accompaniment to 62368-1.• Ed. 2 TR 62368-2 will be further improved.

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ECMA TR/106

ECMA TR/106, Guidance and Comparison between 60950-1 & 62368-1

• http://www.ecma-international.org/publications/techreports/E-TR-106.htm

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Status: IEC 62368-1, IEC 60950-1, IEC 60065 & National/Regional Versions


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, or optional safety standards …

• Europe (CENELEC) – Ed No. 1 was not supported.• Wanted further refinement of requirements before adoption….

• Asia – under close & ongoing study by multiple countries

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IEC 62368-1, Edition No. 1

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

• TRF available – UL originator

• Multiple CBTLs – incl. UL offices globally

• IECEE CTL activity started, including development of test equipment list, available on CTL website…

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Why CB Scheme activation important?

Courtesy of IECEE

OFF & TRON 54% CB Scheme!


CAN-CSA C22.2 No 62368-1/ANSI-UL 62368-1, Edition No. 1

Canadian/U.S. Bi-national Standard• Published - February 2012• 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.

• Optional standard – No formal Effective Date established for mandatory use of Ed. No. 1 in the U.S. & Canada…

• Gives NA running start on development & adoption of Ed. No. 2 of CSA/UL 62368-1 !

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What’s New? IEC 62368-1, IEC 60950-1


IEC 62368-1 (Ed. 2 (new) vs. Ed. 1)

Clause 1 (Scope)• Statement added so scope explicitly covers power suppliesClause 4 (General requirements)• Button Cell batteries – new requirements• Revised requirements for glass, incl. Annex T.Clause 5 (Electrically-caused injury)• Extensive revisions to Insulation Coordination requirements, especially

Clearances• Further refinement of SPD/VDR/TVSS requirements, including Annex G.8Clause 8 (Mechanically-caused injury)• Further refinement of fan blade requirements (two K-factor formulas). • Removed rotating solid media requirements• Reference added to IEC 60950-23 for large data storage equipmentClause 9 (Thermal burn injury)• Further refinement of Touch Temperatures

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IEC 62368-1 (Ed. 2, cont.)

Clause 10 (Radiation)• Further refinement of laser & LED limits/requirements• New acoustic limit requirements for listening devicesAnnex F (Markings, instructions and instructional safeguards)• Clarification of Functional Earthing Marking Annex M (Batteries and their protection circuits)• New IEC 62133 requirement for battery packsAnnex W (Comparison of terms)• New IEC 60065 section

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What about the Legacy Standards?

New IEC 60950-1 (Ed 2 Am 2) -- > published May 2013

New IEC 60065 (Ed 8) --> Q1 2014

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IEC 60950-1 (Am. 2 vs. Am. 1)

Clause 1 (General, incl. Scope)• Permits for backwards compatibility of IEC 62368-1 components in

IEC 60950-1 (and 60065).• Clarification of VDR requirements, incl. Annex Q.Clause 2 (Protection from hazards)• Further refinement of how to consider pulsed signals, aka ‘hiccup’

mode• Allows LPS output limited by PTC device to be measured at 60s.• No longer need to section printed boards as part of special PD1

and solid insulation investigations (rely on ES & visual).Clause 4 (Physical requirements)• Requires IEC 62133 for battery packs

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See UL 60950-1 Certification Impact Analysis for more details!

Likely Publication/Adoption Scenarios, including Ed. No. 2 status…


Edition No. 2 of IEC 62368-1?

IEC TC108 has reached a consensus ‘Yes’ position to move the 108/495/CDV document forward to FDIS!

In Europe, CENELEC CLC/TC 108X reached a consensus ‘Yes’ position to move the FprEN 62368-1:2012 and FprEN 62368-1:2012/FprAA:2012 (regional differences)documents forward!

Next Steps: FDIS --> IEC Standard FDIS will be issued shortly with two (2) month voting

period.IEC target publication date --> Q4 2013 or Q1 2014!

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EN 62368-1?

Assuming Ed No. 2 of IEC 62368-1 published in Q4 2013 or early 2014: Reasonable expectation -> Europe will adopt Ed. 2 as

EN 62368-1, Ed. No. 2 • Reasonable expectation since the IEC Standard has been

further refined since Ed. No. 1 and most of the previously expressed, significant concerns have been addressed.

• If adopted, it likely will have 4+ year effective date (DOW), likely ≈ April 2018…

Since Europe & NA are two major markets, Ed. No. 2 likely will result in more universal adoption and global transition from legacy standards ….

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Edition No. 2 of CSA/UL 62368-1?

Technical Harmonization Committee (THC) work beginning.

Ed. No. 2 development expected to be streamlined since National Differences (NDs) already developed and published. Edition No. 2 activity will be mostly fine-tuning NDs, update

standard & Code references, etc.

Target publication date --> Q3 2014 ! UL likely will establish an Effective Date for transition

similar to EU…

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

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Likely Transition Scenario… Latest IEC 60950-1 (Ed 2 Am 2) -- > published May 2013 Latest IEC 60065 (Ed 8) --> Q1 2014

Therefore,• Europe: Final versions EN 60950-1 published in 2013, and

EN 60065 published 2014.• Likely 2-3 year effective date (DOW), possibly ≈ April 2016…

• CAN/US: Final versions of CSA & UL 60065 & 60950-1 published in 2014

• UL 60950-1 Effective Date likely to be aligned with Europe…

So, for new certifications of A/V & ICT Equipment in EU & NA, IEC 62368-1 likely to be the required standard around year 2018…

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Likely Transition Scenario…

Today ≈ 2013/2014 ≈ 2018 & beyond

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, and later…


Possible EU/NA Transition (subject to change) :Legacy AV/ICT Standards 62368-1 ???

Year 2012 2013 2014 2015 2016 2017 2018 2019 ++

IEC IEC 60065, Ed 7, Am 2 (2010)

IEC 60065, Ed 8 (2013?)

IEC 60950-1, Ed 2, Am 1 (2009)

IEC 60950-1, Ed 2, Am 2 (2013?)

IEC 62368-1, Ed 1 (2010-01)

IEC 62368-1, Ed 2 (2013?)EU EN 60065, Ed 7, Am2

EN 60065, Ed 8 (2013?)

EN 60950-1, Ed 2, Am 1

EN 60950-1, Ed 2, Am 2 (2013?)

EN 62368-1, Ed 2 (2013?) CAN/US

UL 60065, Ed 7

UL 60065, Ed 8 (2014?)

CSA/UL 60950-1, Ed 2

CSA/UL 60950-1, Ed 2, Am1 (2011)

CSA/UL 60950-1, Ed 2, Am2 (2014?)

CSA/UL 62368-1, Ed 1 (2012)

CSA/UL 62368-1, Ed 2 (2014?) 47


UL.com Effective Date Information

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What’s Next?


Codes & Regulations

ANSI/NFPA 70, National Electrical Code (NEC)

• US Electrical Installation Code - numerous references to UL 60950-1 need updating.

• NFPA 70-2014 in final stage of adoption.• UL proposed multiple updates to include UL 62368-1.• Key references updated to now include UL 62368-1.

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Other Stakeholders

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 AAMI 60601-1 Third Edition since Risk Management notpart of application of UL 62368-1...

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What UL can provide to industry today!

Evaluations of Products to 62368-1• Options include,

- Concurrent with current active project- With previously certified product (to 60065 or 60950)- Independent of previous certifications

• Deliverables- Gap Report - no additional testing beyond current project testing- Gap Report + TRF - no additional testing beyond current project testing- Gap report + TRF with additional testing for 62368-1- Certification to 62368-1

Training to 62368-1• Existing on-line courses and materials• Private/custom training


Why Consider 62368-1?

Cost savings:• Alternative design/construction methods allowed by new standard =

manufacturing cost savings!• Early planning during the transition cycle - minimize costs during the formal

transition period

Manufacturer/OEM Marketing Opportunities:• Early Adopter claiming rights

Ability to introduce new technology to market more quickly:• Reduced need to wait for changes to standards since fewer prescriptive

requirements• Fewer interpretations needed since more performance-based requirements• Generic HBSE provision allowed for ‘constructions not specifically covered…”

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Why UL?

• Amplifier

• Desktop Computer

• LCD Monitor

• Notebook computer

• Power Distribution Unit (PDU)

• Power Supply (SMPS)

• Printers

• Projector

• Scanner

• Server

• TV

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UL LLC has experience applying Edition No. 1 of IEC 62368-1 & CSA/UL 62368-1 to the following products:


Why UL?

UL LLC has already provided certifications (UL, CB, etc.) and customized projects (e.g., gap analyses) in AP, EU & NA for:

• ODMs/OEMs

• Component manufacturers

• Brand owners

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Knowledge Exchange & Training Opportunities

www.ul.com/62368

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

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IEEE PSES Local Chapters & ISPCE…

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IEEE Symposium on Product Compliance Engineering (ISPCE)

2013, October – Austin Texas

2014, May – Silicon Valley, CA• Call for Papers: Q4 2013• Topic/Abstract Proposals Due: January 2014

• Need Papers & Presentations, and Ideas!• Will Need Local Volunteers!

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Q&A

Thank you!

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