Audio/video, information and communication technology equipment - Part 1: Safety requirements

IEC 62368-1:2018 is applicable to the safety of electrical and electronic equipment within the field of audio, video, information and communication technology, and business and office machines with a rated voltage not exceeding 600 V. This document does not include requirements for performance or functional characteristics of equipment.
This is a product safety standard that classifies energy sources, prescribes safeguards against those energy sources, and provides guidance on the application of, and requirements for, those safeguards.
The prescribed safeguards are intended to reduce the likelihood of pain, injury and, in the case of fire, property damage.
This third edition cancels and replaces the second edition published in 2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
– addition of requirements for outdoor equipment;
– new requirements for optical radiation;
– addition of requirements for insulating liquids;
– addition of requirements for work cells;
– addition of requirements for wireless power transmitters;
– addition of requirements for fully insulated winding wire (FIW);
– alternative method for determination of top, bottom and side openings for fire enclosures;
– alternative requirements for sound pressure.
This group safety publication is primarily intended to be used as a product safety standard for the products mentioned in the scope, but shall also be used by technical committees in the preparation of standards for products similar to those mentioned in the scope of this standard, in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51.
The contents of the corrigendum of April 2020 have been included in this copy.
Key words: Audio, Video, Communication, Safety

Équipements des technologies de l'audio/vidéo, de l'information et de la communication - Partie 1: Exigences de sécurité

IEC 62368-1:2018 est disponible sous forme de IEC 62368-1:2018 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L'IEC 62368-1:2018 s'applique à la sécurité de l'équipement électrique et électronique dans le domaine des technologies audio, vidéo, d'information et de communication, et des machines commerciales ou de bureau dont la tension assignée est inférieure ou égale à 600 V. La présente norme ne contient ni les exigences de performances ni les caractéristiques fonctionnelles de l'équipement. Elle est une norme relative à la sécurité des produits qui classifie les sources d’énergie, spécifie des protections contre ces sources d’énergie, et fournit des recommandations concernant leur application et leurs exigences. Les protections spécifiées sont prévues pour réduire la probabilité de douleur, blessure et, en cas d'incendie, de dommage matériel. Cette troisième édition annule et remplace la deuxième édition parue en 2014. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
– ajout des exigences relatives au matériel pour installation extérieure;
– nouvelles exigences relatives au rayonnement optique;
– ajout des exigences relatives à l'isolant liquide;
– ajout des exigences relatives aux cellules de travail;
– ajout d'exigences relatives aux émetteurs de puissance sans fil;
– ajout d'exigences relatives aux fils de bobinage totalement isolés (FIW, fully insulated winding wire);
– méthode alternative de détermination des ouvertures supérieures, inférieures et latérales des enveloppes ignifuges;
– autres exigences relatives à la pression acoustique.
La présente publication groupée de sécurité est avant tout destinée à être utilisée en tant que norme en matière de sécurité des produits pour les produits cités dans le domaine d’application, mais elle doit également être utilisée par les comités d’études dans le cadre de l’élaboration de normes pour des produits similaires à ceux cités dans le domaine d’application de la présente norme, conformément aux principes établis dans le Guide IEC 104 et le Guide ISO/IEC 51.
Le contenu du corrigendum d'avril 2020 a été pris en considération dans cet exemplaire.
Mots-clés: Audio, Vidéo, Communication, Sécurité

General Information

Status
Published
Publication Date
03-Oct-2018
Current Stage
PPUB - Publication issued
Completion Date
04-Oct-2018
Ref Project

Buy Standard

Standard
IEC 62368-1:2018 - Audio/video, information and communication technology equipment - Part 1: Safety requirements
English and French language
775 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (sample)

IEC 62368-1
Edition 3.0 2018-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Audio/video, information and communication technology equipment –
Part 1: Safety requirements
Équipements des technologies de l'audio/vidéo, de l'information et de la
communication –
Partie 1: Exigences de sécurité
IEC 62368-1:2018-10(en-fr)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2018 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from

either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC

copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or

your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite

ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie

et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des

questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez

les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC

The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes

International Standards for all electrical, electronic and related technologies.
About IEC publications

The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the

latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org

The stand-alone application for consulting the entire The world's leading online dictionary of electronic and

bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in

Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional

documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical

iPad. Vocabulary (IEV) online.

IEC publications search - webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary

The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and

variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of

committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been

and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
IEC Just Published - webstore.iec.ch/justpublished

Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc

details all new publications released. Available online and If you wish to give us your feedback on this publication or

also once a month by email. need further assistance, please contact the Customer Service

Centre: sales@iec.ch.
A propos de l'IEC

La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des

Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC

Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la

plus récente, un corrigendum ou amendement peut avoir été publié.
Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient 21 000 termes et définitions en anglais
Spécifications techniques, Rapports techniques et autres
et en français, ainsi que les termes équivalents dans 16
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.
Recherche de publications IEC -
Glossaire IEC - std.iec.ch/glossary
webstore.iec.ch/advsearchform
67 000 entrées terminologiques électrotechniques, en anglais

La recherche avancée permet de trouver des publications IEC et en français, extraites des articles Termes et Définitions des

en utilisant différents critères (numéro de référence, texte, publications IEC parues depuis 2002. Plus certaines entrées

comité d’études,…). Elle donne aussi des informations sur les antérieures extraites des publications des CE 37, 77, 86 et

projets et les publications remplacées ou retirées. CISPR de l'IEC.

IEC Just Published - webstore.iec.ch/justpublished Service Clients - webstore.iec.ch/csc

Restez informé sur les nouvelles publications IEC. Just Si vous désirez nous donner des commentaires sur cette

Published détaille les nouvelles publications parues. publication ou si vous avez des questions contactez-nous:

Disponible en ligne et aussi une fois par mois par email. sales@iec.ch.
---------------------- Page: 2 ----------------------
IEC 62368-1
Edition 3.0 2018-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Audio/video, information and communication technology equipment –
Part 1: Safety requirements
Équipements des technologies de l'audio/vidéo, de l'information et de la
communication –
Partie 1: Exigences de sécurité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.160.01; 35.020 ISBN 978-2-8322-5977-1

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 62368-1:2018 © IEC 2018
CONTENTS

FOREWORD ....................................................................................................................... 20

INTRODUCTION ................................................................................................................. 23

0 Principles of this product safety standard ..................................................................... 23

0.1 Objective ............................................................................................................ 23

0.2 Persons .............................................................................................................. 23

0.2.1 General ....................................................................................................... 23

0.2.2 Ordinary person ........................................................................................... 23

0.2.3 Instructed person ......................................................................................... 23

0.2.4 Skilled person .............................................................................................. 23

0.3 Model for pain and injury ..................................................................................... 24

0.4 Energy sources ................................................................................................... 24

0.5 Safeguards ......................................................................................................... 25

0.5.1 General ....................................................................................................... 25

0.5.2 Equipment safeguard ................................................................................... 26

0.5.3 Installation safeguard ................................................................................... 26

0.5.4 Personal safeguard ...................................................................................... 26

0.5.5 Behavioural safeguards ................................................................................ 27

0.5.6 Safeguards during ordinary or instructed person service conditions ............... 28

0.5.7 Equipment safeguards during skilled person service conditions ..................... 28

0.5.8 Examples of safeguard characteristics .......................................................... 28

0.6 Electrically-caused pain or injury (electric shock) ................................................. 29

0.6.1 Models for electrically-caused pain or injury .................................................. 29

0.6.2 Models for protection against electrically-caused pain or injury ..................... 30

0.7 Electrically-caused fire ........................................................................................ 31

0.7.1 Models for electrically-caused fire ................................................................ 31

0.7.2 Models for protection against electrically-caused fire .................................... 31

0.8 Injury caused by hazardous substances ............................................................... 32

0.9 Mechanically-caused injury .................................................................................. 32

0.10 Thermally-caused injury (skin burn) ..................................................................... 33

0.10.1 Models for thermally-caused injury ............................................................... 33

0.10.2 Models for protection against thermally-caused pain or injury ........................ 34

0.11 Radiation-caused injury ....................................................................................... 35

1 Scope .......................................................................................................................... 36

2 Normative references................................................................................................... 37

3 Terms, definitions and abbreviated terms ..................................................................... 44

3.1 Energy source abbreviations ............................................................................... 44

3.2 Other abbreviations ............................................................................................. 45

3.3 Terms and definitions .......................................................................................... 46

3.3.1 Circuit terms ................................................................................................ 49

3.3.2 Enclosure terms ........................................................................................... 49

3.3.3 Equipment terms .......................................................................................... 50

3.3.4 Flammability terms ....................................................................................... 51

3.3.5 Electrical insulation ...................................................................................... 53

3.3.6 Miscellaneous .............................................................................................. 53

3.3.7 Operating and fault conditions ...................................................................... 55

3.3.8 Persons ....................................................................................................... 56

---------------------- Page: 4 ----------------------
IEC 62368-1:2018 © IEC 2018 – 3 –

3.3.9 Potential ignition sources ............................................................................. 57

3.3.10 Ratings ........................................................................................................ 57

3.3.11 Safeguards .................................................................................................. 58

3.3.12 Spacings ...................................................................................................... 60

3.3.13 Temperature controls ................................................................................... 60

3.3.14 Voltages and currents .................................................................................. 60

3.3.15 Classes of equipment with respect to protection from electric shock .............. 61

3.3.16 Chemical terms ............................................................................................ 62

3.3.17 Batteries ...................................................................................................... 62

3.3.18 FIW terms .................................................................................................... 63

3.3.19 Sound exposure ........................................................................................... 63

4 General requirements .................................................................................................. 64

4.1 General ............................................................................................................... 64

4.1.1 Application of requirements and acceptance of materials, components

and subassemblies ...................................................................................... 64

4.1.2 Use of components ...................................................................................... 65

4.1.3 Equipment design and construction .............................................................. 65

4.1.4 Equipment installation .................................................................................. 65

4.1.5 Constructions and components not specifically covered ................................ 66

4.1.6 Orientation during transport and use ............................................................. 66

4.1.7 Choice of criteria .......................................................................................... 66

4.1.8 Liquids and liquid filled components (LFC) .................................................... 66

4.1.9 Electrical measuring instruments .................................................................. 67

4.1.10 Temperature measurements ......................................................................... 67

4.1.11 Steady state conditions ................................................................................ 67

4.1.12 Hierarchy of safeguards ............................................................................... 67

4.1.13 Examples mentioned in this document .......................................................... 67

4.1.14 Tests on parts or samples separate from the end-product ............................. 67

4.1.15 Markings and instructions ............................................................................. 67

4.2 Energy source classifications .............................................................................. 68

4.2.1 Class 1 energy source .................................................................................. 68

4.2.2 Class 2 energy source .................................................................................. 68

4.2.3 Class 3 energy source .................................................................................. 68

4.2.4 Energy source classification by declaration ................................................... 68

4.3 Protection against energy sources ....................................................................... 68

4.3.1 General ....................................................................................................... 68

4.3.2 Safeguards for protection of an ordinary person ............................................ 68

4.3.3 Safeguards for protection of an instructed person ......................................... 70

4.3.4 Safeguards for protection of a skilled person ................................................ 71

4.3.5 Safeguards in a restricted access area ......................................................... 72

4.4 Safeguards ......................................................................................................... 72

4.4.1 Equivalent materials or components ............................................................. 72

4.4.2 Composition of a safeguard .......................................................................... 72

4.4.3 Safeguard robustness .................................................................................. 72

4.4.4 Displacement of a safeguard by an insulating liquid ...................................... 74

4.4.5 Safety interlocks .......................................................................................... 75

4.5 Explosion ............................................................................................................ 75

4.5.1 General ....................................................................................................... 75

4.5.2 Requirements .............................................................................................. 75

---------------------- Page: 5 ----------------------
– 4 – IEC 62368-1:2018 © IEC 2018

4.6 Fixing of conductors ............................................................................................ 76

4.6.1 Requirements .............................................................................................. 76

4.6.2 Compliance criteria ...................................................................................... 76

4.7 Equipment for direct insertion into mains socket-outlets ....................................... 76

4.7.1 General ....................................................................................................... 76

4.7.2 Requirements .............................................................................................. 76

4.7.3 Compliance criteria ...................................................................................... 76

4.8 Equipment containing coin / button cell batteries .................................................. 77

4.8.1 General ....................................................................................................... 77

4.8.2 Instructional safeguard ................................................................................. 77

4.8.3 Construction ................................................................................................ 77

4.8.4 Tests ........................................................................................................... 77

4.8.5 Compliance criteria ...................................................................................... 78

4.9 Likelihood of fire or shock due to entry of conductive objects ............................... 79

4.10 Components requirements ................................................................................... 79

4.10.1 Disconnect device ........................................................................................ 79

4.10.2 Switches and relays ..................................................................................... 79

5 Electrically-caused injury ............................................................................................. 79

5.1 General ............................................................................................................... 79

5.2 Classification and limits of electrical energy sources ............................................ 80

5.2.1 Electrical energy source classifications ......................................................... 80

5.2.2 Electrical energy source ES1 and ES2 limits ................................................. 80

5.3 Protection against electrical energy sources ........................................................ 86

5.3.1 General ....................................................................................................... 86

5.3.2 Accessibility to electrical energy sources and safeguards ............................. 86

5.4 Insulation materials and requirements.................................................................. 89

5.4.1 General ....................................................................................................... 89

5.4.2 Clearances .................................................................................................. 94

5.4.3 Creepage distances ................................................................................... 104

5.4.4 Solid insulation .......................................................................................... 108

5.4.5 Antenna terminal insulation ........................................................................ 117

5.4.6 Insulation of internal wire as a part of a supplementary safeguard ............... 117

5.4.7 Tests for semiconductor components and for cemented joints ..................... 118

5.4.8 Humidity conditioning ................................................................................. 118

5.4.9 Electric strength test .................................................................................. 119

5.4.10 Safeguards against transient voltages from external circuits ....................... 122

5.4.11 Separation between external circuits and earth ........................................... 124

5.4.12 Insulating liquid .......................................................................................... 125

5.5 Components as safeguards ............................................................................... 126

5.5.1 General ..................................................................................................... 126

5.5.2 Capacitors and RC units............................................................................. 126

5.5.3 Transformers ............................................................................................. 127

5.5.4 Optocouplers ............................................................................................. 127

5.5.5 Relays ....................................................................................................... 127

5.5.6 Resistors ................................................................................................... 128

5.5.7 SPDs ......................................................................................................... 128

5.5.8 Insulation between the mains and an external circuit consisting of a

coaxial cable .............................................................................................. 129

5.5.9 Safeguards for socket-outlets in outdoor equipment .................................... 129

---------------------- Page: 6 ----------------------
IEC 62368-1:2018 © IEC 2018 – 5 –

5.6 Protective conductor ......................................................................................... 130

5.6.1 General ..................................................................................................... 130

5.6.2 Requirements for protective conductors ...................................................... 130

5.6.3 Requirements for protective earthing conductors ........................................ 131

5.6.4 Requirements for protective bonding conductors ......................................... 131

5.6.5 Terminals for protective conductors ............................................................ 134

5.6.6 Resistance of the protective bonding system .............................................. 135

5.6.7 Reliable connection of a protective earthing conductor ................................ 137

5.6.8 Functional earthing .................................................................................... 137

5.7 Prospective touch voltage, touch current and protective conductor current ......... 137

5.7.1 General ..................................................................................................... 137

5.7.2 Measuring devices and networks ................................................................ 138

5.7.3 Equipment set-up, supply connections and earth connections ..................... 138

5.7.4 Unearthed accessible parts ........................................................................ 138

5.7.5 Earthed accessible conductive parts ........................................................... 139

5.7.6 Requirements when touch current exceeds ES2 limits ................................. 139

5.7.7 Prospective touch voltage and touch current associated with external

circuits ....................................................................................................... 139

5.7.8 Summation of touch currents from external circuits ..................................... 141

5.8 Backfeed safeguard in battery backed up supplies ............................................. 143

6 Electrically-caused fire ............................................................................................... 143

6.1 General ............................................................................................................. 143

6.2 Classification of power sources (PS) and potential ignition sources (PIS) ........... 143

6.2.1 General ..................................................................................................... 143

6.2.2 Power source circuit classifications ............................................................ 144

6.2.3 Classification of potential ignition sources .................................................. 147

6.3 Safeguards against fire under normal operating conditions and abnormal

operating conditions .......................................................................................... 148

6.3.1 Requirements ............................................................................................ 148

6.3.2 Compliance criteria .................................................................................... 149

6.4 Safeguards against fire under single fault conditions .......................................... 149

6.4.1 General ..................................................................................................... 149

6.4.2 Reduction of the likelihood of ignition under single fault conditions in

PS1 circuits ............................................................................................... 149

6.4.3 Reduction of the likelihood of ignition under single fault conditions in

PS2 circuits and PS3 circuits ...................................................................... 149

6.4.4 Control of fire spread in PS1 circuits ........................................................... 151

6.4.5 Control of fire spread in PS2 circuits ........................................................... 151

6.4.6 Control of fire spread in a PS3 circuit ......................................................... 152

6.4.7 Separation of combustible materials from a PIS .......................................... 152

6.4.8 Fire enclosures and fire barriers ................................................................. 155

6.4.9 Flammability of an insulating liquid ............................................................. 160

6.5 Internal and external wiring ............................................................................... 161

6.5.1 General requirements ................................................................................. 161

6.5.2 Requirements for interconnection to building wiring. ................................... 161

6.5.3 Internal wiring for socket-outlets ................................................................. 161

6.6 Safeguards against fire due to the connection of additional equipment ............... 162

7 Injury caused by hazardous substances ..................................................................... 162

7.1 General ............................................................................................................. 162

7.2 Reduction of exposure to hazardous substances ................................................ 162

---------------------- Page: 7 ----------------------
– 6 – IEC 62368-1:2018 © IEC 2018

7.3 Ozone exposure ................................................................................................ 162

7.4 Use of personal safeguards or personal protective equipment (PPE) .................. 162

7.5 Use of instructional safeguards and instructions ................................................. 163

7.6 Batteries and their protection circuits ................................................................. 163

8 Mechanically-caused injury ........................................................................................ 163

8.1 General ............................................................................................................. 163

8.2 Mechanical energy source classifications ........................................................... 163

8.2.1 General classification ................................................................................. 163

8.2.2 MS1 ..............
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.