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GB/T 39943-2021Performance requirements for LED lighting chains (English PDF)

LED灯串性能要求

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 9, 2021

Implementation date

October 1, 2021

Scope

GB/T 39943-2021 is the English-translated version of LED灯串性能要求.

GB/T 39943-2021 sets the performance requirements and test methods for decorative light strings that use LED light sources and run on a supply voltage of no more than 250 V. It covers strings for indoor and outdoor use, whether connected in series, in parallel or in series-parallel.

Products are classified by the LED modules used in the string and by purpose, and after the general requirements and the general test conditions the technical requirements deal with marking, light colour, input power and lifetime, each with a matching test method.

The standard defines decorative lighting chains, unicolour and monochromatic light, and refers to GB 7000.9 for string lights, GB/T 24823-2017 for LED modules and GB/T 33721-2017 for LED lamp reliability tests. It was issued on 9 March 2021 and has applied since 1 October 2021.

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Document preview — GB/T 39943-2021

National Standard of the People's Republic of China

ICS: 29.140.40
Classification: K 72

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Product Category
4.1 Classification according to the LED modules used in the light string
4.2 Classification by purpose
5 General requirements
6 General test requirements and conditions
7 Technical requirements
7.1 Mark
7.2 The color of light
7.3 Input power
7.4 Lifetime
8 Test method
8.1 Mark
8.2 The color of light
8.3 Input power
8.4 Lifetime

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the performance requirements and test methods for light strings with a power supply voltage not exceeding 250V and using LED light sources.

This standard applies to decorative light strings that are used indoors and outdoors, connected in series or parallel, and connected in series and parallel.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 2423.18-2012 Environmental test Part 2: Test method Test Kb. Salt spray, alternating (sodium chloride solution)

GB 7000.1 Lamps Part 1: General requirements and tests

GB 7000.9 Lamps Part 2-20.Special requirements string lights

GB 17625.1 EMC limit harmonic current emission limit (equipment input current per phase<=16A)

GB/T 17625.2 The limit of electromagnetic compatibility is for equipment with rated current <= 16A per phase and unconditionally connected in public low-voltage power supply Limitations of voltage changes, voltage fluctuations and flicker generated in the system

GB/T 17743 Limits and measurement methods of radio disturbance characteristics of electrical lighting and similar equipment

GB/T 18595 General lighting equipment electromagnetic compatibility immunity requirements

GB 19510 (all parts) light control device

GB/T 24823-2017 LED module performance requirements for general lighting

GB/T 31897.201-2016 Lamp Performance Part 2-1.Special Requirements for LED Lamps

GB/T 33721-2017 LED lamps reliability test method

3 Terms and definitions

The following terms and definitions defined in GB 7000.1, GB/T 31897.201-2016 and GB 7000.9 apply to this document.

3.1 Decorative lighting chains

The main function of luminescence is to attract attention, not to illuminate the surrounding environment.

3.2 Unicolour

Only one light color is presented, but the light color is not necessarily a spectrum of a single frequency (or wavelength).

Note: Examples of single light colors, such as white light, red light, etc.

3.3 Monochromatic light

Light of a single frequency (or wavelength).

4 Product Classification

4.1 Classification according to the LED modules used in the light string

LED light strings are divided into LED modules used in the light string. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB 7000.9 · GB 19510

Similar standards

GB/T 24460-2025|GB/T 45818-2025|GB/T 46906-2025|GB 43472-2023|GB/T 42219-2022|GB/T 9473-2022

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