GB 4943.1-2022 PDF English
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Audio/video, information and communication technology equipment - Part 1: Safety requirements
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[Replaced by GB 4943.1-2022] Information technology equipment -- Safety -- Part 1: General requirements
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Safety of information technology equipment
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Safety of information technology equipment including electrical business equipment
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GB 4943.1-2022: PDF in English GB 4943.1-2022
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 35.020
CCS L 09
Replacing GB 4943.1-2011, GB 8898-2011
Audio/video, information and communication technology
equipment - Part 1: Safety requirements
(IEC 62368-1:2018, MOD)
ISSUED ON: JULY 19, 2022
IMPLEMENTED ON: AUGUST 01, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 17
Introduction ... 24
0.1 Objective ... 24
0.2 Persons ... 24
0.2.1 General ... 24
0.2.2 Ordinary person ... 24
0.2.3 Instructed person ... 24
0.2.4 Skilled person ... 25
0.3 Model for pain and injury ... 25
0.4 Energy sources ... 26
0.5 Safeguards ... 27
0.5.1 General ... 27
0.5.2 Equipment safeguard ... 28
0.5.3 Installation safeguard ... 28
0.5.4 Personal safeguard ... 29
0.5.5 Behavioural safeguards ... 29
0.5.6 Safeguards during ordinary or instructed person service conditions ... 30
0.5.7 Equipment safeguards during skilled person service conditions ... 30
0.5.8 Examples of safeguard characteristics ... 31
0.6 Electrically-caused pain or injury (electric shock) ... 31
0.6.1 Models for electrically-caused pain or injury ... 31
0.6.2 Models for protection against electrically-caused pain or injury ... 32
0.7 Electrically-caused fire ... 33
0.7.1 Models for electrically-caused fire ... 33
0.7.2 Models for protection against electrically-caused fire ... 34
0.8 Injury caused by hazardous substances ... 35
0.9 Mechanically-caused injury ... 36
0.10 Thermally-caused injury (skin burn) ... 37
0.10.1 Models for thermally-caused injury ... 37
0.10.2 Models for protection against thermally-caused pain or injury ... 38
0.11 Radiation-caused injury ... 39
0.12 Description of relevant information ... 40
1 Scope ... 41
2 Normative references ... 43
3 Terms, definitions and abbreviated terms ... 54
3.1 Energy source abbreviations ... 54
3.2 Other abbreviations ... 55
3.3 Terms and definitions ... 56
3.3.1 Circuit terms ... 60
3.3.2 Enclosure terms ... 60
3.3.3 Equipment terms ... 61
3.3.4 Flammability terms ... 64
3.3.5 Electrical insulation ... 66
3.3.6 Miscellaneous ... 67
3.3.7 Operating and fault conditions ... 70
3.3.8 Persons ... 72
3.3.9 Potential ignition sources ... 72
3.3.10 Ratings ... 73
3.3.11 Safeguards ... 74
3.3.12 Spacings ... 77
3.3.13 Temperature controls ... 77
3.3.14 Voltages and currents ... 78
3.3.15 Classes of equipment with respect to protection from electric shock ... 79
3.3.16 Chemical terms ... 80
3.3.17 Batteries ... 81
3.3.18 FIW terms ... 82
3.3.19 Sound exposure ... 83
4 General requirements ... 84
4.1 General ... 84
4.1.1 Application of requirements and acceptance of materials, components and
subassemblies ... 84
4.1.2 Use of components ... 84
4.1.3 Equipment design and construction ... 85
4.1.4 Equipment installation ... 85
4.1.5 Constructions and components not specifically covered ... 86
4.1.6 Orientation during transport and use ... 86
4.1.7 Choice of criteria ... 86
4.1.8 Liquids and liquid filled components (LFC) ... 86
4.1.9 Electrical measuring instruments ... 87
4.1.10 Temperature measurements ... 87
4.1.11 Steady state conditions ... 87
4.1.12 Hierarchy of safeguards ... 87
4.1.13 Examples mentioned in this document ... 88
4.1.14 Tests on parts or samples separate from the end-product ... 88
4.1.15 Markings and instructions ... 88
4.2 Energy source classifications ... 88
4.2.1 Class 1 energy source ... 88
4.2.2 Class 2 energy source ... 89
4.2.3 Class 3 energy source ... 89
4.2.4 Energy source classification by declaration ... 89
4.3 Protection against energy sources ... 89
4.3.1 General ... 89
4.3.2 Safeguards for protection of an ordinary person ... 89
4.3.3 Safeguards for protection of an instructed person ... 91
Foreword
This document is drafted in accordance with GB/T 1.1-2020 "Directives for
standardization - Part 1: Rules for the structure and drafting of standardizing
documents".
This document is Part 1 of GB 4943. GB 4943 has issued the following part:
- Part 1: Safety requirements.
This document replaces GB 4943.1-2011 "Information technology equipment - Safety
- Part 1: General requirements" and GB 8898-2011 "Audio, video and similar electronic
apparatus - Safety requirements". Compared with GB 4943.1-2011 and GB 8898-2011,
in addition to structural adjustment and editorial changes, the main technical changes
are as follows:
- Add energy source classification tests; specify different limits and safeguard
requirements (see 5.2, 6.2, 8.2, 9.2, 10.2);
- Delete the definition of TNV circuit (see 1.2.8.11 of GB 4943.1-2011 and Annex
B of GB 8898-2011);
- Add the definition and requirements of insulating liquid (see 3.3.5.4, 4.4.4, 5.4.12,
6.4.9);
- Add and change the requirements for equipment containing liquid (see 4.1.8, B.3.1,
F.4, G.15, and P.3; 4.3.10, 4.3.11, and 4.3.12 of GB 4943.1-2011);
- Add requirements for equipment containing coin / button cell batteries (see 4.8);
- Change the test requirements or limits of some safety requirements (see Table 4,
5.4.2, 5.4.9, 5.5.2.2, and Table 38, etc.; 5.1, 2.10.3, 5.2, 2.1.1.7, and Table 4C, etc.
of GB 4943.1-2011; 9.1.1.1, 13.3, 10.3, 9.1.6, and Table 3, etc. of GB 8898-2011);
- Add requirements for backfeed (see 5.8);
- Add test requirements for power source circuits (see 6.2);
- Change the requirements and test methods for combustible materials (see 6.4 and
Annex S; 4.7 and Annex A of GB 4943.1-2011; Clause 20 and Annex G of GB
8898-2011);
- Change the requirements for enclosure openings (see 6.4.8.3 and P.2; 4.6 of GB
4943.1-2011; 9.1.3 of GB 8898-2011);
- Add requirements for large equipment (see 8.5.4);
- Change the test method for equipment mounted to a wall or ceiling (see 8.7; 4.2.10
of GB 4943.1-2011; 19.6 of GB 8898-2011);
- Add requirements for slide-rail mounted equipment (see 8.11);
- Add requirements for wireless transmitters (see 9.6);
- Change the requirements for optical radiation (see Table 39, 10.3, and 10.4;
4.3.13.5 of GB 4943.1-2011; 6.2 of GB 8898-2011);
- Add requirements for acoustic radiation (see 10.6);
- Add requirements for the input signal of the display (see B.2.5);
- Add new identification symbols for Class II equipment with a functional earthing
connection (see F.3.6.2);
- Add requirements for transformers using fully insulated winding wire (see G.5.3.4);
- Add requirements for liquid filled components (see G.15);
- Add requirements for integrated circuits and integrated circuits with X-capacitor
function (see G.16);
- Add and change the requirements for equipment containing batteries and their
protection circuits (see Annex M);
- Add the limited short-circuit test (see Annex R);
- Delete the spring impact hammer test (see 12.1.3 of GB 8898-2011);
- Add the children test probe and wedge probe (see Annex V);
- Add requirements for outdoor equipment (see Annex Y).
This document modifies and adopts IEC 62368-1:2018 "Audio/video, information and
communication technology equipment - Part 1: Safety requirements".
Compared with IEC 62368-1:2018, this document has technical differences, which are
marked with a vertical single line (|) in the outer margin of the clauses involved. These
technical differences and their reasons are as follows:
a) Scope of application
IEC 62368-1:2018 applies to equipment intended to be used at an altitude of 2000
m and below. Due to the particularity of China's geographical conditions and the
distribution characteristics of ethnic minority populations, after the revision of
some clauses of IEC 62368-1:2018, this document is applicable to equipment
Audio/video, information and communication technology
equipment - Part 1: Safety requirements
1 Scope
This document specifies the safety requirements of electrical and electronic equipment
within the field of audio, video, information and communication technology, and
business and office machines. It does not include requirements for performance or
functional characteristics of equipment.
This document is applicable to the above electrical and electronic equipment with a
rated voltage not exceeding 600 V.
Note 1: Examples of equipment within the scope of this document are given in Annex A.
Note 2: A rated voltage of 600 V is considered to include equipment rated 400/690 V.
This document is also applicable to:
- components and subassemblies intended for incorporation in this equipment. Such
components and subassemblies need not comply with every requirement of this
document, provided that the complete equipment, incorporating such components
and subassemblies, does comply;
- external power supply units intended to supply other equipment within the scope
of this document;
- accessories intended to be used with equipment within the scope of this document;
- large equipment installed in restricted access areas. For equipment having large
machinery aspects, additional requirements may apply; and
- equipment to be used in tropical regions.
This document also includes requirements for audio/video, information and
communication technology equipment intended to be installed in an outdoor location.
The requirements for outdoor equipment also apply, where relevant, to outdoor
enclosures suitable for direct installation in the field and supplied for housing
audio/video, information and communication technology equipment to be installed in
an outdoor location. See Annex Y for specific construction requirements.
Each installation may have particular requirements. In addition, requirements for
protection of the outdoor equipment against the effects of direct lightning strikes are
not covered by this document.
Note 3: For information on this subject, see GB/T 21714.1.
This document assumes a maximum altitude of 5000 m unless otherwise specified by
the manufacturer.
Additional requirements for equipment having the capability to supply DC power over
commonly used communication cables, such as USB or Ethernet (PoE), are given in
IEC 62368-3. IEC 62368-3 does not apply to:
- equipment supplying power using proprietary connectors; or
- equipment using a proprietary protocol for power selection.
This document specifies safeguards for ordinary persons, instructed persons, and skilled
persons. Additional requirements may apply for equipment that is clearly designed or
intended for use by children or specifically attractive to children.
Note 4: In Australia, the work conducted by an instructed person or a skilled person may require
formal licensing from regulatory authorities.
Note 5: In Germany, in many cases a person may only be regarded as an instructed person or a
skilled person if certain legal requirements are fulfilled.
This document does not apply to:
- equipment with non-self-contained hazardous moving parts, such as robotic
equipment; and
Note 6: For requirements related to robotic equipment in an industrial environment, see GB/T
5226.1, GB 5226.3, GB 11291.1 and GB 11291.2.
- personal care robots, including mobile servant robots, physical assistant robots, and
person carrier robots; and
Note 7: For requirements related to personal care robots, see GB/T 36530.
- power supply systems that are not an integral part of the equipment, such as motor-
generator sets, battery backup systems and distribution transformers.
This document does not address:
- manufacturing processes except for routine tests;
- injurious effects of gases released by thermal decomposition or combustion;
- disposal processes;
- effects of transport (other than as specified in this document);
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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