Audio, video and information technology equipment - Routine electrical safety testing in production

IEC 62911:2016 defines routine electrical safety test procedures for use during or after manufacturing of complete equipment, sub-assemblies or components, complying with IEC 60065, IEC 60950-1 or IEC 62368-1 and powered by an a.c. mains supply or d.c. mains supply, to detect manufacturing failures and unacceptable tolerances in manufacturing and materials. All the tests defined in this standard do not necessarily have to be performed at the end product manufacturing location. The optimal location for the routine electrical safety tests can be defined by the equipment manufacturer and reviewed under the conformity assessment scheme. Key words: Audio, Video Electrical Safety Test

Appareils audio, vidéo et matériel de traitement de l'information - Essais individuels de série, en production, pour la vérification de la sécurité électrique

L'IEC 62911:2016 définit des procédures d'essais individuels de série pour la vérification de la sécurité électrique destinées à être utilisées pendant ou après la fabrication d'appareils complets, de sous-ensembles ou de composants, conformes à l'IEC 60065, l'IEC 60950-1 ou l'IEC 62368-1 et alimentés par un réseau d'alimentation en courant continu ou par un réseau d'alimentation en courant alternatif, afin de détecter des défaillances de fabrication et des tolérances inacceptables dans les matériaux et la fabrication. Il n'est pas nécessaire de réaliser tous les essais définis dans la présente norme sur le site de fabrication du produit fini. Le lieu optimal pour réaliser les essais individuels de série pour la vérification de la sécurité électrique peut être déterminé par le fabricant d'appareils et révisé par le système d'évaluation de la conformité. Mots-clés: audio, video, vérification de la sécurité électrique

General Information

Status
Published
Publication Date
05-Jan-2016
Current Stage
PPUB - Publication issued
Start Date
06-Jan-2016
Completion Date
06-Jan-2016
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IEC 62911
Edition 1.0 2016-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Audio, video and information technology equipment – Routine electrical safety
testing in production
Appareils audio, vidéo et matériel de traitement de l'information – Essais

individuels de série, en production, pour la vérification de la sécurité électrique

IEC 62911:2016-01(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62911
Edition 1.0 2016-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Audio, video and information technology equipment – Routine electrical safety
testing in production
Appareils audio, vidéo et matériel de traitement de l'information – Essais

individuels de série, en production, pour la vérification de la sécurité électrique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.160, 35.020 ISBN 978-2-8322-3094-7

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62911:2016 © IEC 2016
CONTENTS

FOREWORD ........................................................................................................................... 3

1 Scope .............................................................................................................................. 5

2 Normative references ...................................................................................................... 5

3 Terms and definitions ...................................................................................................... 5

4 Conformance ................................................................................................................... 5

5 Routine electrical safety tests .......................................................................................... 6

5.1 Resistance of protective bonding system ................................................................ 6

5.2 Electric strength test ............................................................................................... 6

6 Records of tests .............................................................................................................. 9

Table 1 – Test voltage for equipment with a.c. mains .............................................................. 7

Table 2 – Test voltage for equipment with d.c. mains .............................................................. 7

Table 3 – DC test voltages ...................................................................................................... 8

---------------------- Page: 4 ----------------------
IEC 62911:2016 © IEC 2016 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUDIO, VIDEO AND INFORMATION TECHNOLOGY EQUIPMENT –
ROUTINE ELECTRICAL SAFETY TESTING IN PRODUCTION
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

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Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62911 has been prepared by TC108: Safety of electronic

equipment within the field of audio/video, information technology and communication

technology
The text of this standard is based on the following documents:
FDIS Report on voting
108/616/FDIS 108/635/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

In this standard, the following print types or formats are used:
– requirements proper and normative annexes: in roman type;
---------------------- Page: 5 ----------------------
– 4 – IEC 62911:2016 © IEC 2016
– compliance statements and test specifications: in italic type;
– notes/explanatory matter: in smaller roman type;
– normative conditions within tables: in smaller roman type;
– terms that are defined in Clause 3: bold.

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 6 ----------------------
IEC 62911:2016 © IEC 2016 – 5 –
AUDIO, VIDEO AND INFORMATION TECHNOLOGY EQUIPMENT –
ROUTINE ELECTRICAL SAFETY TESTING IN PRODUCTION
1 Scope

This International Standard defines routine electrical safety test procedures for use during

or after manufacturing of complete equipment, sub-assemblies or components, complying with

IEC 60065, IEC 60950-1 or IEC 62368-1 and powered by an a.c. mains supply or d.c. mains

supply, to detect manufacturing failures and unacceptable tolerances in manufacturing and

materials.

NOTE All the tests defined in this standard do not necessarily have to be performed at the end product

manufacturing location. The optimal location for the routine electrical safety tests can be defined by the

equipment manufacturer and reviewed under the conformity assessment scheme.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and

are indispensable for its application. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60065, Audio, video and similar electronic apparatus – Safety requirements

IEC 60950-1, Information technology equipment – Safety – Part 1: General requirements

IEC 62368-1, Audio/video, information and communication technology equipment – Part 1:

Safety requirements
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60065, IEC 60950-1

and IEC 62368-1, as well as the following apply.
3.1
routine electrical safety test

electrical safety test to which each individual equipment is subjected during or at the end of

manufacture
4 Conformance

Equipment shall pass the routine electrical safety tests of Clause 5 where applicable and

the results of these tests shall be recorded according to Clause 6 prior to shipment from the

manufacturing site.

NOTE Practical measures can be used to conduct the test, such as finding an appropriate way to make the

connections necessary to perform the relevant test.
---------------------- Page: 7 ----------------------
– 6 – IEC 62911:2016 © IEC 2016
5 Routine electrical safety tests
5.1 Resistance of protective bonding system

For class I equipment, the continuity of the protective bonding system shall be checked

between the protective earth contact of the mains plug or appliance inlet, or the protective

earthing terminal in case of a permanently connected equipment, and

– the accessible conductive parts that need to be connected to the protective earthing

terminal for compliance with the requirements of the standard, and

– the protective earth contact of the socket-outlets respectively, if provided to deliver mains

power to other equipment.

NOTE 1 Functional earth is not considered a part of the protective bonding system and as a consequence, it does

not need to be tested.

The minimum test current is 150 % of the rating of the overcurrent device protecting the

protective bonding conductor (the protective current rating), but not less than 10 A and

not more than 25 A (a.c. or d.c.), applied for any duration between 1 s and 4 s. The source

shall have a no-load voltage not exceeding 12 V.
The resistance, calculated from the voltage drop, shall not exceed 0,1 Ω.

It is permitted to include the power cord (if any) in the resistance measurement and, if the

result exceeds 0,1 Ω, to subtract the resistance of the protective earthing conductor of the

power cord.

NOTE 2 Ensure that the contact resistance between the tip of the measuring probe and the conductive part under

test does not influence the test result.
5.2 Electric strength test

Routine tests for electric strength shall be carried out between circuits connected to the

mains (primary circuits) and accessible conductive parts. For accessible circuits not

connected to the mains (secondary circuits), it is permitted to test separately, before final

assembly, subassemblies and components, such as transformers, if the relevant insulation

cannot be tested in the complete equipment, provided that the complete equipment complies

with IEC 60065, IEC 60950-1 or IEC 62368-1 as appropriate.
The insulation of the equipment shall be checked by the following test:

– for equipment supplied by an a.c. mains, an a.c. test voltage of substantially sine-wave

form, having mains frequency, or a d.c. test voltage or a combination of both with a peak

value as specified in Table 1 is applied;

– for equipment supplied by a d.c. mains, a d.c. voltage according to Table 2 is applied;

– for equipment supplied by either an a.c. mains or a d.c. mains, the test can be applied at

either a.c. or d.c., making sure that the test voltage is the equivalent of the highest of the

two required test voltages as given in the above two dashes.

The test voltages given are the minimum test voltages to be applied. Higher voltages are

allowed at the discretion of the manufacturer provided the insulation is not damaged due to

overstress by the voltage applied.

NOTE 1 Applying an electrical strength test voltage that is too high can result in deterioration or partial damage of

the insulation.
The test voltage is applied between the supply terminals connected together and
– terminals regarded as accessible, and
– accessible conductive parts respectively,
---------------------- Page: 8 ----------------------
IEC 62911:2016 © IEC 2016 – 7 –

that may become hazardous live (ES3) in the event of an insulation fault as a result of

incorrect assembly.

NOTE 2 Terminals regarded as accessible and accessible conductive parts can be connected together during

the electric strength test.
Table 1 – Test voltage for equipment with a.c. mains
Test voltage
V (peak) a.c or d.c.
Application of test voltage
Rated mains voltage Rated mains voltage
≤ 150 > 150
1 130 2 120
Accessible parts connected to protective earth
(800 r.m.s.) (1 500 r.m.s.)
2 120 3 540
Accessible parts not connected to protective earth
(1 500 r.m.s.) (2 500 r.m.s.)

Functional earth is not considered to be protective earth. Accessible parts connected to functional earth have to

be tested as not being connected to protective earth.
Table 2 – Test voltage for equipment with d.c. mains
Test voltage
V d.c.
Application of test voltage
Up to and including Over 60 V up to and
60 V including 10 kV
Accessible parts connected to protective earth No test see V in Table 3
Accessible parts not connected to protective earth No test see V in Table 3

Functional earth is not considered to be protective earth. Accessible parts connected to functional earth have to

be tested as not being connected to protective earth.
---------------------- Page: 9 ----------------------
– 8 – IEC 62911:2016 © IEC 2016
Table 3 – DC test voltages
DC mains supply voltage V d.c. V d.c.
a b
> 60 921 1 472
62 935 1 495
64 947 1 517
66 962 1 538
68 976 1 560
70 988 1 581
72 1 001 1 602
74 1 014 1 622
76 1 027 1 643
78 1 039 1 663
80 1 052 1 683
85 1 082 1 731
90 1 110 1 777
95 1 138 1 821
100 1 167 1 865
105 1 193 1 909
110 1 219 1 950
115 1 244 1 991
120 1 268 2 031
125 1 294 2 069
130 1 316 2 107
135 1 340 2 145
140 1 363 2 180
145 1 386 2 217
150 1 407 2 253
152 1 414 2 262
155 1 414 2 286
160 1 414 2 320
165 1 414 2 353
170 1 414 2 387
175 1 414 2 419
180 1 414 2 450
184 1 414 2 476
185 1 551 2 482
190 1 571 2 513
200 1 608 2 573
210 1 644 2 631
220 1 681 2 689
230 1 717 2 746
240 1 751 2 800
250 1 783 2 853
260 1 817 2 906
270 1 848 2 958
280 1 881 3 008
290 1 910 3 057
300 1 941 3 105
310 1 971 3 153
320 1 999 3 200
330 2 029 3 247
340 2 057 3 292
350 2 084 3 336
---------------------- Page: 10 ----------------------
IEC 62911:2016 © IEC 2016 – 9 –
DC mains supply voltage V d.c. V d.c.
a b
360 2 113 3 379
380 2 166 3 466
400 2 219 3 549
420 2 269 3 630
440 2 319 3 709
460 2 367 3 787
480 2 414 3 862
500 2 460 3 937
520 2 506 4 009
540 2 549 4 079
560 2 593 4 149
580 2 636 4 217
588 2 651 4 242
600 2 677 4 242
Linear interpolation is permitted between the nearest two points.
a 0,463 8

At these voltages, the values of V are determined by the general curve V = 155,86 U and are not

b b
1,6 V .

Before the test voltage is applied, contact shall be made between the equipment and the

connection devices.

The voltage applied to the insulation under test may be gradually raised from zero to the

prescribed voltage and maintained at that value for 1 s to 4 s.

During the test, mains switches and functional switches conductively connected to the mains,

if any, shall be in the on-position and it shall be ensured by suitable means that the test

voltage is effectively connected to the equipment.

No flash-over or breakdown shall occur during the test. The test voltage source shall be

provided with a current sensing (over-current) device which, when activat
...

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