GB 4943.1-2022Audio/video,information and communication technology equipment—Part 1: Safety requirements (English PDF)

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

3.1 Energy source abbreviations

The following abbreviations apply to this document.

4.1 General

4.1.1 Application of requirements and acceptance of materials, components and

subassemblies

Requirements are specified in the relevant clauses and, where referenced in those

clauses, in the relevant annexes.

Where compliance of materials, components or subassemblies is demonstrated by

inspection, such compliance may be by review of published data or previous test results.

4.1.2 Use of components

Where the component, or a characteristic of a component, is a safeguard or a part of a

safeguard, components shall comply with the requirements of this document or, where

specified in a requirements clause, with the safety aspects of the relevant national,

industry or IEC component standards.

The use of components shall meet the requirements of the corresponding altitude of the

equipment.

4.11 Overcurrent protective device

Protective devices for overcurrent, short-circuit and earth fault protection of the primary

circuit shall be included in the equipment as part of the equipment, unless all

requirements under fault conditions are met.

If pluggable equipment type B or permanently connected equipment relies on external

protective devices for protection, it shall be stated in the installation instructions of the

equipment. It shall also propose requirements for short-circuit protection or overcurrent

protection, or both if necessary.

5.1 General

To reduce the likelihood of painful effects and injury due to electric current passing

through the human body, equipment shall be provided with the safeguards specified in

Clause 5.

5.2 Classification and limits of electrical energy sources

5.2.1 Electrical energy source classifications

5.2.1.1 ES1

ES1 is a class 1 electrical energy source with current or voltage levels.

- not exceeding ES1 limits under

 normal operating conditions, and

 abnormal operating conditions, and

 single fault conditions of a component, device or insulation not serving as a

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