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

2022-02-21: Common mods to this prEN IEC are included in prAA - PR=75763

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

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

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SLOVENSKI STANDARD
oSIST prEN IEC 62368-1:2022
01-april-2022
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: prEN IEC 62368-1:2022
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
oSIST prEN IEC 62368-1:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 62368-1:2022
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oSIST prEN IEC 62368-1:2022
108/767/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62368-1 ED4
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2022-02-11 2022-05-06
SUPERSEDES DOCUMENTS:
108/755/CD, 108/766/CC

IEC TC 108 : SAFETY OF ELECTRONIC EQUIPMENT WITHIN THE FIELD OF AUDIO/VIDEO, INFORMATION TECHNOLOGY AND

COMMUNICATION TECHNOLOGY
SECRETARIAT: SECRETARY:
United States of America Ms Valara Davis
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 23,TC 34,TC 61,TC 62,TC 100
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY

SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING

Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes.

Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of

which they are aware and to provide supporting documentation.
TITLE:
Audio/video, information and communication technology equipment - Part 1: Safety
requirements
PROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:

Copyright © 2021 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this

electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.

You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without

permission in writing from IEC.
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oSIST prEN IEC 62368-1:2022
IEC CDV 62368-1 ED4 © IEC 2022 – 2 – 108/767/CDV
1 CONTENTS

2 CONTENTS ............................................................................................................................ 2

3 FOREWORD ......................................................................................................................... 19

4 INTRODUCTION ................................................................................................................... 21

5 0 Principles of this product safety standard ...................................................................... 21

6 0.1 Objective .............................................................................................................. 21

7 0.2 Persons ................................................................................................................ 21

8 0.2.1 General ......................................................................................................... 21

9 0.2.2 Ordinary person ............................................................................................. 21

10 0.2.3 Instructed person ........................................................................................... 21

11 0.2.4 Skilled person ................................................................................................ 21

12 0.3 Model for pain and injury ....................................................................................... 22

13 0.4 Energy sources ..................................................................................................... 22

14 0.5 Safeguards ........................................................................................................... 23

15 0.5.1 General ......................................................................................................... 23

16 0.5.2 Equipment safeguard ..................................................................................... 24

17 0.5.3 Installation safeguard .................................................................................... 24

18 0.5.4 Personal safeguard........................................................................................ 24

19 0.5.5 Behavioural safeguards ................................................................................. 25

20 0.5.6 Safeguards during ordinary or instructed person service conditions ............... 26

21 0.5.7 Equipment safeguards during skilled person service conditions ..................... 26

22 0.5.8 Examples of safeguard characteristics ........................................................... 26

23 0.6 Electrically-caused pain or injury (electric shock) .................................................. 27

24 0.6.1 Models for electrically-caused pain or injury .................................................. 27

25 0.6.2 Models for protection against electrically-caused pain or injury ...................... 28

26 0.7 Electrically-caused fire .......................................................................................... 29

27 0.7.1 Models for electrically-caused fire .................................................................. 29

28 0.7.2 Models for protection against electrically-caused fire ..................................... 29

29 0.8 Injury caused by hazardous substances ................................................................ 30

30 0.9 Mechanically-caused injury ................................................................................... 30

31 0.10 Thermally-caused injury (skin burn) ...................................................................... 31

32 0.10.1 Models for thermally-caused injury ................................................................ 31

33 0.10.2 Models for protection against thermally-caused pain or injury ........................ 32

34 0.11 Radiation-caused injury ........................................................................................ 33

35 1 Scope ............................................................................................................................ 34

36 2 Normative references .................................................................................................... 35

37 3 Terms, definitions and abbreviated terms ...................................................................... 42

38 3.1 Energy source abbreviations ................................................................................. 42

39 3.2 Other abbreviations .............................................................................................. 43

40 3.3 Terms and definitions ............................................................................................ 44

41 3.3.1 Circuit terms .................................................................................................. 47

42 3.3.2 Enclosure terms ............................................................................................. 48

43 3.3.3 Equipment terms ........................................................................................... 48

44 3.3.4 Flammability terms ........................................................................................ 50

45 3.3.5 Electrical insulation........................................................................................ 51

46 3.3.6 Miscellaneous ................................................................................................ 52

47 3.3.7 Operating and fault conditions ....................................................................... 55

48 3.3.8 Persons ......................................................................................................... 56

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49 3.3.9 Potential ignition sources ............................................................................... 56

50 3.3.10 Ratings .......................................................................................................... 57

51 3.3.11 Safeguards .................................................................................................... 57

52 3.3.12 Spacings ....................................................................................................... 59

53 3.3.13 Temperature controls ..................................................................................... 59

54 3.3.14 Voltages and currents .................................................................................... 59

55 3.3.15 Classes of equipment with respect to protection from electric shock .............. 60

56 3.3.16 Chemical terms .............................................................................................. 61

57 3.3.17 Batteries ........................................................................................................ 61

58 3.3.18 FIW terms ...................................................................................................... 62

59 3.3.19 Sound exposure ............................................................................................ 62

60 4 General requirements .................................................................................................... 63

61 4.1 General ................................................................................................................. 63

62 4.1.1 Application of requirements and acceptance of materials, components

63 and subassemblies ........................................................................................ 63

64 4.1.2 Use of components ........................................................................................ 64

65 4.1.3 Equipment design and construction ............................................................... 64

66 4.1.4 Equipment installation ................................................................................... 65

67 4.1.5 Constructions and components not specifically covered ................................. 65

68 4.1.6 Orientation during transport and use .............................................................. 65

69 4.1.7 Choice of criteria ........................................................................................... 65

70 4.1.8 Liquids, refrigerants and liquid filled components (LFC´s) .............................. 65

71 4.1.9 Electrical measuring instruments ................................................................... 66

72 4.1.10 Temperature measurements .......................................................................... 66

73 4.1.11 Steady state conditions .................................................................................. 66

74 4.1.12 Hierarchy of safeguards ................................................................................. 66

75 4.1.13 Examples mentioned in this document ........................................................... 66

76 4.1.14 Tests on parts or samples separate from the end-product .............................. 66

77 4.1.15 Markings and instructions .............................................................................. 67

78 4.2 Energy source classifications ................................................................................ 67

79 4.2.1 Class 1 energy source ................................................................................... 67

80 4.2.2 Class 2 energy source ................................................................................... 67

81 4.2.3 Class 3 energy source ................................................................................... 67

82 4.2.4 Energy source classification by declaration .................................................... 67

83 4.3 Protection against energy sources ........................................................................ 67

84 4.3.1 General ......................................................................................................... 67

85 4.3.2 Safeguards for protection of an ordinary person ............................................ 67

86 4.3.3 Safeguards for protection of an instructed person .......................................... 69

87 4.3.4 Safeguards for protection of a skilled person ................................................. 70

88 4.3.5 Safeguards in a restricted access area .......................................................... 71

89 4.4 Safeguards ........................................................................................................... 71

90 4.4.1 Equivalent materials or components .............................................................. 71

91 4.4.2 Composition of a safeguard ........................................................................... 71

92 4.4.3 Safeguard robustness .................................................................................... 71

93 4.4.4 Displacement of a safeguard by an insulating liquid ....................................... 74

94 4.4.5 Safety interlocks ............................................................................................ 74

95 4.5 Explosion .............................................................................................................. 74

96 4.5.1 General ......................................................................................................... 74

97 4.5.2 Requirements ................................................................................................ 74

98 4.6 Fixing of conductors and conductive parts............................................................. 75

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99 4.6.1 Requirements ................................................................................................ 75

100 4.6.2 Compliance criteria ........................................................................................ 75

101 4.7 Equipment for direct insertion into mains socket-outlets ........................................ 75

102 4.7.1 General ......................................................................................................... 75

103 4.7.2 Requirements ................................................................................................ 75

104 4.7.3 Compliance criteria ........................................................................................ 75

105 4.8 Equipment containing coin / button cell batteries ................................................... 76

106 4.8.1 General ......................................................................................................... 76

107 4.8.2 Instructional safeguard .................................................................................. 76

108 4.8.3 Construction .................................................................................................. 76

109 4.8.4 Tests ............................................................................................................. 77

110 4.8.5 Compliance criteria ........................................................................................ 77

111 4.9 Likelihood of fire or shock due to entry of conductive objects ................................ 78

112 4.10 Components requirements .................................................................................... 78

113 4.10.1 Disconnect device ......................................................................................... 78

114 4.10.2 Switches and relays ....................................................................................... 78

115 4.10.3 Power supply cords ....................................................................................... 78

116 4.10.4 Batteries and their protection circuits ............................................................. 79

117 5 Electrically-caused injury ............................................................................................... 79

118 5.1 General ................................................................................................................. 79

119 5.2 Classification and limits of electrical energy sources ............................................. 79

120 5.2.1 Electrical energy source classifications .......................................................... 79

121 5.2.2 Electrical energy source ES1 and ES2 limits .................................................. 79

122 5.3 Protection against electrical energy sources ......................................................... 85

123 5.3.1 General ......................................................................................................... 85

124 5.3.2 Accessibility to electrical energy sources and safeguards .............................. 85

125 5.4 Insulation materials and requirements ................................................................... 88

126 5.4.1 General ......................................................................................................... 88

127 5.4.2 Clearances .................................................................................................... 93

128 5.4.3 Creepage distances ..................................................................................... 103

129 5.4.4 Solid insulation ............................................................................................ 107

130 5.4.5 Antenna terminal insulation.......................................................................... 116

131 5.4.6 Insulation of internal wire as a part of a supplementary safeguard ............... 116

132 5.4.7 Tests for semiconductor components and for cemented joints ..................... 117

133 5.4.8 Humidity conditioning .................................................................................. 117

134 5.4.9 Electric strength test .................................................................................... 118

135 5.4.10 Safeguards against transient voltages from external circuits ........................ 121

136 5.4.11 Separation between external circuits and earth ............................................ 122

137 5.4.12 Insulating liquid ........................................................................................... 124

138 5.5 Components as safeguards ................................................................................. 125

139 5.5.1 General ....................................................................................................... 125

140 5.5.2 Capacitors and RC units .............................................................................. 125

141 5.5.3 Transformers ............................................................................................... 126

142 5.5.4 Optocouplers ............................................................................................... 126

143 5.5.5 Relays ......................................................................................................... 126

144 5.5.6 Resistors ..................................................................................................... 126

145 5.5.7 Surge suppressors ....................................................................................... 127

146 5.5.8 Insulation between the mains and an external circuit consisting of a

147 coaxial cable ............................................................................................... 128

148 5.5.9 Safeguards for socket-outlets in outdoor equipment ..................................... 128

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149 5.6 Protective conductor ........................................................................................... 128

150 5.6.1 General ....................................................................................................... 128

151 5.6.2 Requirements for protective conductors ....................................................... 128

152 5.6.3 Requirements for protective earthing conductors ......................................... 129

153 5.6.4 Requirements for protective bonding conductors ......................................... 130

154 5.6.5 Terminals for protective conductors ............................................................. 132

155 5.6.6 Resistance of the protective bonding system ............................................... 133

156 5.6.7 Reliable connection of a protective earthing conductor ................................ 135

157 5.6.8 Functional earthing ...................................................................................... 135

158 5.7 Prospective touch voltage, touch current and protective conductor current.......... 136

159 5.7.1 General ....................................................................................................... 136

160 5.7.2 Measuring devices and networks ................................................................. 136

161 5.7.3 Equipment set-up, supply connections and earth connections ...................... 136

162 5.7.4 Unearthed accessible parts ......................................................................... 136

163 5.7.5 Earthed accessible conductive parts ............................................................ 137

164 5.7.6 Requirements when touch current exceeds ES2 limits ................................. 137

165 5.7.7 Prospective touch voltage and touch current associated with external

166 circuits ......................................................................................................... 137

167 5.7.8 Summation of touch currents from external circuits ...................................... 139

168 5.8 Backfeed safeguard in battery backed up supplies .............................................. 141

169 6 Electrically-caused fire ................................................................................................ 141

170 6.1 General ............................................................................................................... 141

171 6.2 Classification of power sources (PS) and potential ignition sources (PIS) ........... 141

172 6.2.1 General ....................................................................................................... 141

173 6.2.2 Power source circuit classifications ............................................................. 142

174 6.2.3 Classification of potential ignition sources ................................................... 145

175 6.3 Safeguards against fire under normal operating conditions and abnormal

176 operating conditions ............................................................................................ 146

177 6.3.1 Requirements .............................................................................................. 146

178 6.3.2 Compliance criteria ...................................................................................... 147

179 6.4 Safeguards against fire under single fault conditions........................................... 147

180 6.4.1 General ....................................................................................................... 147

181 6.4.2 Reduction of the likelihood of ignition under single fault conditions in

182 PS1 circuits ................................................................................................. 147

183 6.4.3 Reduction of the likelihood of ignition under single fault conditions in

184 PS2 circuits and PS3 circuits ....................................................................... 147

185 6.4.4 Control of fire spread in PS1 circuits ............................................................ 149

186 6.4.5 Control of fire spread in PS2 circuits ............................................................ 149

187 6.4.6 Control of fire spread in a PS3 circuit .......................................................... 149

188 6.4.7 Separation of combustible materials from a PIS ........................................... 150

189 6.4.8 Fire enclosures and fire barriers .................................................................. 152

190 6.4.9 Flammability of an insulating liquid .............................................................. 159

191 6.5 Internal and external wiring ................................................................................. 159

192 6.5.1 General requirements .................................................................................. 159

193 6.5.2 Requirements for interconnection to building wiring ..................................... 160

194 6.5.3 Internal wiring for socket-outlets .................................................................. 160

195 6.6 Safeguards against fire due to the connection of additional equipment................ 160

196 7 Injury caused by hazardous substances....................................................................... 161

197 7.1 General ............................................................................................................... 161

198 7.2 Reduction of exposure to hazardous substances................................................. 161

199 7.3 Ozone exposure .................................................................................................. 161

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200 7.4 Use of personal safeguards or personal protective equipment (PPE) .................. 161

201 7.5 Use of instructional safeguards and instructions ................................................. 161

202 8 Mechanically-caused injury .......................................................................................... 162

203 8.1 General ............................................................................................................... 162

204 8.2 Mechanical energy source classifications ............................................................ 162

205 8.2.1 General classification .................................................................................. 162

206 8.2.2 MS1 ............................................................................................................. 164

207 8.2.3 MS2 ............................................................................................................. 164

208 8.2.4 MS3 ............................................................................................................. 164

209 8.3 Safeguards against mechanical energy sources .................................................. 164

210 8.4 Safeguards against parts with sharp edges and corners ..................................... 164

211 8.4.1 Requirements .............................................................................................. 164

212 8.4.2 Compliance criteria ...................................................................................... 165

213 8.5 Safeguards against moving parts ........................................................................ 165

214 8.5.1 Requirements .............................................................................................. 165

215 8.5.2 Instructional safeguard requirements ........................................................... 166

216 8.5.3 Compliance criteria ...................................................................................... 166

217 8.5.4 Special categories of equipment containing moving parts ............................ 166

218 8.5.5 High pressure lamps .................................................................................... 171

219 8.6 Stability of equipment ......................................................................................... 172

220 8.6.1 Requirements .............................................................................................. 172

221 8.6.2 Static stability .............................................................................................. 173

222 8.6.3 Relocation stability ...................................................................................... 174

223 8.6.4 Glass slide test ............................................................................................ 175

224 8.6.5 Horizontal force test and compliance criteria................................................ 175

225 8.7 Equipment mounted to a wall, ceiling or other structure ...................................... 175

226 8.7.1 Requirements .....
...

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