SIST EN IEC 62368-1:2024

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

IEC 62368-1:2023 is available as IEC 62368-1:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 62368-1:2023 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. The objective of the introduction is to help designers to understand the underlying principles of safety in order to design safe equipment. These principles are informative and not an alternative to the detailed requirements of this document.

Einrichtungen für Audio/Video-, Informations- und Kommunikationstechnik – Teil 1: Sicherheitsanforderungen

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

IEC 62368-1:2023 est disponible sous forme de IEC 62368-1:2023 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.

L'IEC 62368-1:2023 est une norme de sécurité des produits qui classe les sources d’énergie, prescrit des mesures de protection contre ces sources d’énergie et fournit des lignes directrices sur l’application et les exigences de ces garanties. Les mesures de protection prescrites visent à réduire la probabilité de douleur, de blessure et, en cas d’incendie, de dommages matériels. L’objectif de l’introduction est d’aider les concepteurs à comprendre les principes sous-jacents de la sécurité afin de concevoir des équipements sûrs. Ces principes sont instructifs et ne constituent pas une alternative aux exigences détaillées du présent document.

Oprema za avdio/video, informacijsko in komunikacijsko tehnologijo - 1. del: Varnostne zahteve

Ta del standarda IEC 62368 je standard o varnosti izdelkov, ki razvršča vire energije, predpisuje
ukrepe za zaščito pred temi viri energije ter podaja smernice glede uporabe teh ukrepov in zahteve zanje.
Predpisani zaščitni ukrepi so namenjeni zmanjševanju tveganja za bolečine, poškodbe in – v primeru požara – materialne škode.
Cilj uvoda je pomagati načrtovalcem pri razumevanju temeljnih načel varnosti, da bodo lahko načrtovali opremo, ki je varna. Ta načela so informativna in ne nadomeščajo podrobnih zahtev tega dokumenta.

General Information

• Status: Published
• Public Enquiry End Date: 29-Apr-2022
• Publication Date: 13-Aug-2024
• ICS: 33.160.01 - Audio, video and audiovisual systems in general
• ICS: 35.020 - Information technology (IT) in general
• Technical Committee: MOV - Measuring equipment for electromagnetic quantities
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 24-Apr-2024
• Due Date: 29-Jun-2024
• Completion Date: 14-Aug-2024
• Directive: 2001/95/EC - Directive 2001/95/EC of the European Parliament and of the Council of 3 December 2001 on general product safety
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Directive: 2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Mandate: M/452 - Standardisation mandate to CEN, CENELEC and ETSI in the field of Directives 1999/5/EC, 2006/95/EC and 2001/95/EC for health and safety aspects of personal music players and mobile phones with a music playing function
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Mandate: M/536 - [C(2015)536] Standardisation request as regards radio equipment in support of Directive 2014/53/EU
• Ref Project: EN IEC 62368-1:2024 - Audio/video, information and communication technology equipment - Part 1: Safety requirements

Relations

• Amended By: SIST EN IEC 62368-1:2024/A11:2024 - Audio/video, information and communication technology equipment - Part 1: Safety requirements
• Effective Date: 01-Mar-2022
• Revised: SIST EN IEC 62368-1:2020/A11:2020 - Audio/video, information and communication technology equipment - Part 1: Safety requirements
• Effective Date: 26-Jul-2021
• Revised: SIST EN IEC 62368-1:2020/AC:2020 - Audio/video, information and communication technology equipment - Part 1: Safety requirements (IEC 62368-1:2018/COR1:2020)
• Effective Date: 26-Jul-2021
• Revised: SIST EN IEC 62368-1:2020 - Audio/video, information and communication technology equipment - Part 1: Safety requirements
• Effective Date: 26-Jul-2021

Overview - What SIST EN IEC 62368-1:2024 covers

SIST EN IEC 62368-1:2024 adopts IEC 62368-1:2023 as the European/Slovenian safety standard for audio/video, information and communication technology equipment. It is a product safety standard that:

• Classifies energy sources present in equipment,
• Prescribes safeguards to reduce the likelihood of pain, injury or fire damage,
• Provides informative principles to help designers understand safety concepts (not a substitute for the detailed requirements).

The standard is published as EN IEC 62368-1:2024 (CENELEC approval) and corresponds with IEC 62368-1:2023 (see IEC webstore: https://webstore.iec.ch/publication/85813 for the RLV version showing changes from the previous edition).

Key topics and technical requirements

SIST EN IEC 62368-1:2024 organizes requirements around practical safety principles and testing. Major technical topics include:

• Energy source classification (Class 1 / 2 / 3) and declaration procedures.
• Models for pain and injury, including electrically-caused shock, thermally-caused burns, mechanical and radiation hazards.
• Hierarchy and types of safeguards: equipment, installation, personal and behavioural safeguards; robustness and composition of safeguards; safety interlocks.
• Protection mechanisms for ordinary, instructed and skilled persons (different expectations and safeguards per user class).
• Electrical safety: classification of electrical energy sources, insulation and spacing, wiring fixation, switches, relays and disconnect devices.
• Fire protection and flammability: ignition models, material considerations and tests.
• Batteries and coin/button cells: construction, instructional safeguards and test requirements.
• Markings, instructions and testing: requirements for labelling, user information and compliance testing procedures.
• Specific sections cover liquids, refrigerants, LFCs, thermal tests, and equipment intended for direct insertion into mains sockets.

All topics are documented with normative references, terms and test criteria to support consistent compliance assessment.

Practical applications - who uses this standard

SIST EN IEC 62368-1:2024 is used by:

• Product designers and R&D teams building AV, IT and communication equipment,
• Compliance and safety engineers preparing conformity documentation,
• Test laboratories and certification bodies conducting safety testing,
• Manufacturers aiming for CE marking and market access in Europe,
• Regulatory authorities and procurement teams requiring safety assurance.

By applying this standard, organizations reduce safety risks (electric shock, fire, burns) and align products with international and European safety expectations.

Related standards

• IEC 62368-1:2023 (international edition; RLV available)
• EN IEC 62368-1:2020 (superseded by the 2024 edition)

Keywords: SIST EN IEC 62368-1:2024, audio/video equipment safety, information and communication technology equipment safety, energy source classification, electrical safety, product safety standard.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2024
Oprema za avdio/video, informacijsko in komunikacijsko tehnologijo - 1. del:
Varnostne zahteve
Audio/video, information and communication technology equipment - Part 1: Safety
requirements
Einrichtungen für Audio/Video-, Informations- und Kommunikationstechnik – Teil 1:
Sicherheitsanforderungen
Équipements des technologies de l'audio/vidéo, de l'information et de la communication -
Partie 1: Exigences de sécurité
Ta slovenski standard je istoveten z: EN IEC 62368-1:2024
ICS:
33.160.01 Avdio, video in avdiovizualni Audio, video and audiovisual
sistemi na splošno systems in general
35.020 Informacijska tehnika in Information technology (IT) in
tehnologija na splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62368-1

NORME EUROPÉENNE
EUROPÄISCHE NORM April 2024
ICS 33.160.01; 35.020 Supersedes EN IEC 62368-1:2020; EN IEC 62368-
1:2020/A11:2020; EN IEC 62368-1:2020/AC:2020-05
English Version
Audio/video, information and communication technology
equipment - Part 1: Safety requirements
(IEC 62368-1:2023)
Equipements des technologies de l'audio/vidéo, de Einrichtungen für Audio/Video-, Informations- und
l'information et de la communication - Partie 1: Exigences Kommunikationstechnik - Teil 1: Sicherheitsanforderungen
de sécurité (IEC 62368-1:2023)
(IEC 62368-1:2023)
This European Standard was approved by CENELEC on 2024-02-15. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62368-1:2024 E

European foreword
The text of document 108/800/FDIS, future edition 4 of IEC 62368-1, prepared by IEC/TC 108 "Safety
of electronic equipment within the field of audio/video, information technology and communication
technology" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2025-02-15
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2027-02-15
document have to be withdrawn
This document supersedes EN IEC 62368-1:2020 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a standardization request addressed to CENELEC by the
European Commission. The Standing Committee of the EFTA States subsequently approves these
requests for its Member States.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62368-1:2023 was approved by CENELEC as a European
Standard without any modification.

IEC 62368-1 ®
Edition 4.0 2023-05
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 978-2-8322-7019-6

– 2 – IEC 62368-1:2023 © IEC 2023
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. 27
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 abbreviated terms . 44
3.2 Other abbreviated terms . 46
3.3 Terms and definitions . 47
3.3.1 Circuit terms . 50
3.3.2 Enclosure terms . 51
3.3.3 Equipment terms . 51
3.3.4 Flammability terms . 53
3.3.5 Electrical insulation. 54
3.3.6 Miscellaneous . 55
3.3.7 Operating and fault conditions . 58
3.3.8 Persons . 59
3.3.9 Potential ignition sources . 60

IEC 62368-1:2023 © IEC 2023 – 3 –
3.3.10 Ratings . 60
3.3.11 Safeguards . 61
3.3.12 Spacings . 63
3.3.13 Temperature controls . 63
3.3.14 Voltages and currents . 63
3.3.15 Classes of equipment with respect to protection from electric shock . 64
3.3.16 Chemical terms . 65
3.3.17 Batteries . 65
3.3.18 FIW terms . 66
3.3.19 Sound exposure . 66
4 General requirements . 67
4.1 General . 67
4.1.1 Application of requirements and acceptance of materials, components
and subassemblies . 67
4.1.2 Use of components . 68
4.1.3 Equipment design and construction . 68
4.1.4 Equipment installation . 69
4.1.5 Constructions and components not specifically covered . 69
4.1.6 Orientation during transport and use . 69
4.1.7 Choice of criteria . 69
4.1.8 Liquids, refrigerants and liquid filled components (LFCs) . 69
4.1.9 Electrical measuring instruments . 70
4.1.10 Temperature measurements . 70
4.1.11 Steady state conditions . 70
4.1.12 Hierarchy of safeguards . 70
4.1.13 Examples mentioned in this document . 70
4.1.14 Tests on parts or samples separate from the end-product . 71
4.1.15 Markings and instructions . 71
4.2 Energy source classifications . 71
4.2.1 Class 1 energy source . 71
4.2.2 Class 2 energy source . 71
4.2.3 Class 3 energy source . 71
4.2.4 Energy source classification by declaration . 71
4.3 Protection against energy sources . 71
4.3.1 General . 71
4.3.2 Safeguards for protection of an ordinary person . 72
4.3.3 Safeguards for protection of an instructed person . 73
4.3.4 Safeguards for protection of a skilled person . 74
4.3.5 Safeguards in a restricted access area . 75
4.4 Safeguards . 75
4.4.1 Equivalent materials or components . 75
4.4.2 Composition of a safeguard . 75
4.4.3 Safeguard robustness . 75
4.4.4 Displacement of a safeguard by an insulating liquid . 78
4.4.5 Safety interlocks . 78
4.5 Explosion . 78
4.5.1 General . 78
4.5.2 Requirements . 79
4.6 Fixing of conductors and conductive parts. 79

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4.6.1 Requirements . 79
4.6.2 Compliance criteria . 79
4.7 Equipment for direct insertion into mains socket-outlets . 79
4.7.1 General . 79
4.7.2 Requirements . 80
4.7.3 Compliance criteria . 80
4.8 Equipment containing coin or button cell batteries . 80
4.8.1 General . 80
4.8.2 Instructional safeguard . 80
4.8.3 Construction . 81
4.8.4 Tests . 81
4.8.5 Compliance criteria . 82
4.9 Likelihood of fire or shock due to entry of conductive objects . 83
4.10 Components requirements . 83
4.10.1 Disconnect device . 83
4.10.2 Switches and relays . 83
4.10.3 Mains power supply cords. 83
4.10.4 Batteries and their protection circuits . 84
5 Electrically-caused injury . 84
5.1 General . 84
5.2 Classification and limits of electrical energy sources . 84
5.2.1 Electrical energy source classifications . 84
5.2.2 Electrical energy source ES1 and ES2 limits . 84
5.3 Protection against electrical energy sources . 90
5.3.1 General . 90
5.3.2 Accessibility to electrical energy sources and safeguards . 90
5.4 Insulation materials and requirements . 93
5.4.1 General . 93
5.4.2 Clearances . 98
5.4.3 Creepage distances . 109
5.4.4 Solid insulation . 113
5.4.5 Antenna terminal insulation. 123
5.4.6 Insulation of internal wire as a part of a supplementary safeguard . 123
5.4.7 Tests for semiconductor components and for cemented joints . 124
5.4.8 Humidity conditioning . 124
5.4.9 Electric strength test . 125
5.4.10 Safeguards against transient voltages from external circuits . 128
5.4.11 Separation between external circuits and earth . 130
5.4.12 Insulating liquid . 131
5.5 Components as safeguards . 132
5.5.1 General . 132
5.5.2 Capacitors and RC units . 132
5.5.3 Transformers . 133
5.5.4 Optocouplers . 134
5.5.5 Relays . 134
5.5.6 Resistors . 134
5.5.7 Surge suppressors . 134
5.5.8 Insulation between the mains and an external circuit consisting of a
coaxial cable . 135

IEC 62368-1:2023 © IEC 2023 – 5 –
5.5.9 Safeguards for socket-outlets in outdoor equipment . 136
5.6 Protective conductor . 136
5.6.1 General . 136
5.6.2 Requirements for protective conductors . 136
5.6.3 Requirements for protective earthing conductors . 137
5.6.4 Requirements for protective bonding conductors . 138
5.6.5 Terminals for protective conductors . 140
5.6.6 Resistance of the protective bonding system . 142
5.6.7 Reliable connection of a protective earthing conductor . 143
5.6.8 Functional earthing . 143
5.7 Prospective touch voltage, touch current and protective conductor current. 144
5.7.1 General . 144
5.7.2 Measuring devices and networks . 144
5.7.3 Equipment set-up, supply connections and earth connections . 144
5.7.4 Unearthed accessible parts . 145
5.7.5 Earthed accessible conductive parts . 145
5.7.6 Requirements when touch current exceeds ES2 limits . 145
5.7.7 Prospective touch voltage and touch current associated with external
circuits . 146
5.7.8 Summation of touch currents from external circuits . 147
5.8 Backfeed safeguard in battery backed up supplies . 149
6 Electrically-caused fire . 149
6.1 General . 149
6.2 Classification of power sources and potential ignition sources . 149
6.2.1 General . 149
6.2.2 Power source circuit classifications . 150
6.2.3 Classification of potential ignition sources . 153
6.3 Safeguards against fire under normal operating conditions and abnormal
operating conditions . 154
6.3.1 Requirements . 154
6.3.2 Compliance criteria . 155
6.4 Safeguards against fire under single fault conditions. 155
6.4.1 General . 155
6.4.2 Reduction of the likelihood of ignition under single fault conditions in
PS1 circuits . 155
6.4.3 Reduction of the likelihood of ignition under single fault conditions in
PS2 circuits and PS3 circuits . 156
6.4.4 Control of fire spread in PS1 circuits . 157
6.4.5 Control of fire spread in PS2 circuits . 157
6.4.6 Control of fire spread in a PS3 circuit . 158
6.4.7 Separation of combustible materials from a PIS . 159
6.4.8 Fire enclosures and fire barriers . 161
6.4.9 Flammability of an insulating liquid . 169
6.5 Internal and external wiring . 169
6.5.1 General requirements . 169
6.5.2 Requirements for interconnection to building wiring . 169
6.5.3 Internal wiring for socket-outlets . 170
6.6 Safeguards against fire due to the connection of additional equipment. 170
7 Injury caused by hazardous substances. 170
7.1 General . 170

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7.2 Reduction of exposure to hazardous substances. 170
7.3 Ozone exposure . 170
7.4 Use of personal safeguards or personal protective equipment (PPE) . 171
7.5 Use of instructional safeguards and instructions . 171
8 Mechanically-caused injury . 171
8.1 General . 171
8.2 Mechanical energy source classifications . 171
8.2.1 General classification . 171
8.2.2 MS1 . 174
8.2.3 MS2 . 174
8.2.4 MS3 . 174
8.3 Safeguards against mechanical energy sources . 174
8.4 Safeguards against parts with sharp edges and corners . 174
8.4.1 Requirements . 174
8.4.2 Compliance criteria . 175
8.5 Safeguards against moving parts . 175
8.5.1 Requirements . 175
8.5.2 Instructional safeguard requirements . 176
8.5.3 Compliance criteria . 176
8.5.4 Special categories of equipment containing moving parts . 176
8.5.5 High pressure lamps . 181
8.6 Stability of equipment . 182
8.6.1 Requirements . 182
8.6.2 Static stability . 184
8.6.3 Relocation stability . 185
8.6.4 Glass slide test . 186
8.6.5 Horizontal force test and compliance criteria. 186
8.7 Equipment mounted to a wall, ceiling or other structure . 186
8.7.1 Requirements . 186
8.7.2 Test methods . 186
8.7.3 Compliance criteria . 188
8.8 Handle strength . 188
8.8.1 General . 188
8.8.2 Test method . 188
8.9 Wheels or casters attachment requirements . 189
8.9.1 General . 189
8.9.2 Test method . 189
8.10 Carts, stands, and similar carriers . 189
8.10.1 General . 189
8.10.2 Marking and instructions . 189
8.10.3 Cart, stand or carrier loading test and compliance criteria . 190
8.10.4 Cart, stand or carrier impact test. 191
8.10.5 Mechanical stability . 191
8.10.6 Thermoplastic temperature stability . 191
8.11 Mounting means for slide-rail mounted equipment (SRME) . 191
8.11.1 General . 191
8.11.2 Requirements . 192
8.11.3 Mechanical strength test . 192
8.11.4 Compliance criteria . 193

IEC 62368-1:2023 © IEC 2023 – 7 –
8.12 Telescoping or rod antennas . 193
9 Thermal burn injury. 194
9.1 General . 194
9.2 Thermal energy source classifications . 194
9.2.1 TS1 . 194
9.2.2 TS2 . 194
9.2.3 TS3 . 194
9.3 Touch temperature limits . 194
9.3.1 Requirements . 194
9.3.2 Test method and compliance criteria . 194
9.4 Safeguards against thermal energy sources . 197
9.5 Requirements for safeguards . 197
9.5.1 Equipment safeguard . 197
9.5.2 Instructional safeguard . 197
9.6 Requirements for wireless power transmitters . 198
9.6.1 General . 198
9.6.2 Specification of the foreign objects . 198
9.6.3 Test method and compliance criteria . 200
10 Radiation . 201
10.1 General . 201
10.2 Radiation energy source classifications . 201
10.2.1 General classification . 201
10.2.2 RS1 . 203
10.2.3 RS2 . 203
10.2.4 RS3 . 204
10.3 Safeguards against laser radiation . 204
10.4 Safeguards against optical radiation from lamps and lamp systems
(including LED types) . 204
10.4.1 General requirements . 204
10.4.2 Requirements for equipment safeguards . 205
10.4.3 Instructional safeguard . 205
10.4.4 Compliance criteria . 207
10.5 Safeguards against X-radiation . 208
10.5.1 Requirements . 208
10.5.2 Compliance criteria . 208
10.5.3 Test method . 208
10.6 Safeguards against acoustic energy sources . 208
10.6.1 General . 208
10.6.2 Classification . 209
10.6.3 Requirements for dose-based systems . 210
10.6.4 Measurement methods . 211
10.6.5 Protection of persons . 211
10.6.6 Requirements for listening devices (headphones, earphones, etc.) . 212
Annex A (informative) Examples of equipment within the scope of this document . 213
Annex B (normative) Normal operating condition tests, abnormal operating condition
tests and single fault condition tests . 214
B.1 General . 214
B.1.1 Test applicability . 214
B.1.2 Type of test . 214

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B.1.3 Test samples . 214
B.1.4 Compliance by inspection of relevant data . 214
B.1.5 Temperature measurement conditions . 214
B.1.6 Specific output conditions . 215
B.2 Normal operating conditions . 215
B.2.1 General . 215
B.2.2 Supply frequency . 215
B.2.3 Supply voltage . 216
B.2.4 Normal operating voltages . 216
B.2.5 Input test . 216
B.2.6 Operating temperature measurement conditions . 217
B.2.7 Battery charging and discharging under normal operating conditions . 218
B.3 Simulated abnormal operating conditions . 218
B.3.1 General . 218
B.3.2 Covering of ventilation openings . 218
B.3.3 DC mains polarity test . 219
B.3.4 Setting of voltage selector . 219
B.3.5 Maximum load at output terminals . 219
B.3.6 Reverse battery polarity . 219
B.3.7 Audio amplifier abnormal operating conditions . 219
B.3.8 Compliance criteria during and after abnormal operating conditions . 219
B.4 Simulated single fault conditions . 220
B.4.1 General . 220
B.4.2 Temperature controlling device . 220
B.4.3 Motor tests . 220
B.4.4 Functional insulation . 221
B.4.5 Short-circuit and interruption of electrodes in tubes and semiconductors . 221
B.4.6 Short-circuit or disconnection of passive components . 221
B.4.7 Continuous operation of components . 222
B.4.8 Compliance criteria during and after single fault conditions . 222
B.4.9 Battery charging and discharging under single fault conditions . 222
Annex C (normative) UV radiation . 223
C.1 Protection of materials in equipment from UV radiation . 223
C.1.1 General . 223
C.1.2 Requirements . 223
C.1.3 Test method and compliance criteria . 223
C.2 UV light conditioning test . 224
C.2.1 Test apparatus . 224
C.2.2 Mounting of test samples . 224
C.2.3 Carbon-arc light-exposure test . 224
C.2.4 Xenon-arc light-exposure test . 224
Annex D (normative) Test generators . 225
D.1 Impulse test generators .
...