GB 4943.1-2022 PDF English (GB 4943.1-2011: Older version)

GB4943.1-2022: PDF in English

-- Overview: GB 4943.1-2022 "Audio/video, information and communication technology equipment - Part 1: Safety requirements" is a Chinese national standard issued in July 2022. It is mandatorily enforced for new products, from August 2023, for the safety of audio/video, information and communication technology equipment. It collectively replaces the previous standards GB 8898-2011 and GB 4943.1-2011. This standard is technically similar to IEC 62368-1:2018. -- Product continuity and transition: If a product was type-approved under GB 8898-2011 and/or GB 4943.1-2011, before July 2022, then, such products are still allowed to continue to market, manufacture and sales after August 2023 until end of life (so called "continuity"). However, after August 2022, if there is "technically-significant" change of the previously type-approved product, then, such change / product shall be subjected to re-type approval/certification (GB 4943.1-2022). -- Objective This standard specifies the product safety that classifies energy sources, prescribes safeguards against those energy sources, and provides guidance on the application of, and requirements for, those safeguards. -- General safety requirements: It includes safety requirements such as materials and components, safeguards, explosion, fire, and overcurrent protection. -- Other safety requirements: It includes safety requirements such as electrically-caused injury or fire, hazardous substances, mechanically-caused injury, thermal burn injury, and radiation. -- Full copy of English version of GB 4943.1-2022: It has been translated by www.ChineseStandard.net and the PDF will be auto-delivered/downloaded in 9 seconds (Click "Add to Cart" as above). Excerpt from the full-PDF copy of GB 4943.1-2022_English is as follows. 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 equipm.......
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