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GB/T 7000.220-2023: Luminaires - Part 2-20: Particular requirements - Lighting chains
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Luminaires - Part 2-20: Particular requirements - Lighting chains
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Basic data
Standard ID: GB/T 7000.220-2023 (GB/T7000.220-2023)
Description (Translated English): Luminaires - Part 2-20: Particular requirements - Lighting chains
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K72
Classification of International Standard: 29.140
Word Count Estimation: 22,273
Date of Issue: 2023-12-28
Date of Implementation: 2026-01-01
Older Standard (superseded by this standard): GB 7000.9-2008
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
GB/T 7000.220-2023: Luminaires - Part 2-20: Particular requirements - Lighting chains
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 29:140
CCSK72
National Standards of People's Republic of China
Replace GB 7000:9-2008
Luminaires Part 2-20: Special Requirements Light Strings
(IEC 60598-2-20:2022, MOD)
Published on 2023-12-28
Implemented on 2026-01-01
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
Preface III
Introduction V
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
4 General test requirements 4
5 Classification of lamps 4
5:1 General 4
5:2 Classification according to type of protection against electric shock 4
5:3 Classification by dustproof, solid foreign object and waterproof levels 4
6 mark 4
6:1 General 4
6:2 Markings on light strings 4
6:3 Marking on light strings and packaging 4
6:4 Markings on packaging or instructions 4
7 Structure 5
7:1 General 5
7:2 Lamp holder 5
7:3 Terminal block 6
7:4 Terminals and power connections 6
7:5 Seal 6
7:6 Mechanical strength 6
7:7 Lamp jumpers 6
7:8 Control units and control devices 6
7:9 Lamp rotation 6
7:10 Insertion and extraction force of lamp 7
7:11 Mechanical requirements for lamps 7
7:12 Temporary installation of protective light strings 7
8 Creepage distances and clearances 7
9 Grounding regulations 7
10 Terminal 7
11 External and internal wiring 7
11:1 General 7
11:2 Cables for string lights 7
11:3 Cord holder test 8
11:4 Plug and cable length 8
11:5 The maximum length of the Class II light string can be extended 8
12 Protection against electric shock 9
12:1 General 9
12:2 Detachable plug 9
12:3 Chargeability of decorative parts 9
12:4 Contact strips for plug-in lampholders 9
12:5 Blocking piece 10
13 Durability test and thermal test 10
13:1 General 10
13:2 Test voltage 10
13:3 Lamp jumpers 11
13:4 Short circuit test of rectifier 11
14 Protection against dust, solid foreign objects and water 11
15 Insulation resistance and electrical strength 11
16 Heat, fire and marking resistance11
Appendix A (Normative) Requirements for interconnect connectors for light strings 12
Reference 14
Foreword
This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"
Drafting:
This document is part 2-20 of GB (/T)7000: GB (/T)7000 has released the following parts:
---Lamps Part 1: General requirements and tests (GB/T 7000:1-2023);
---Lamps Part 2-1: Fixed universal lamps with special requirements (GB/T 7000:201-2023);
---Lamps Part 2-2: Special requirements for embedded lamps (GB/T 7000:202-2023);
---Lamps Part 2-3: Special requirements for road and street lighting fixtures (GB 7000:203-2013);
---Lamps Part 2-4: Movable general-purpose lamps with special requirements (GB/T 7000:204-2023);
---Lamps Part 2-5: Special requirements for floodlights (GB/T 7000:205-2023);
---Lamps Part 2-6: Special requirements for lamps with built-in tungsten filament lamp transformers or converters (GB 7000:6-2008);
---Lamps Part 2-8: Special requirements portable lamps (GB/T 7000:208-2023);
---Safety requirements for lighting fixtures for photography and film (non-professional use) (GB 7000:19-2005);
---Lamps Part 2-10: Special requirements for removable lamps for children (GB 7000:4-2007);
---Lamps Part 2-11: Special requirements for aquarium lamps (GB/T 7000:211-2023);
---Lamps Part 2-12: Night lights with special requirements for power socket installation (GB/T 7000:212-2023);
---Lamps Part 2-13: Special requirements for ground recessed lamps (GB/T 7000:213-2023);
---Lamps Part 2-14: Special requirements for lamps using cold cathode tubular discharge lamps (neon lamps) and similar equipment
(GB 7000:214-2015);
---Lamps Part 2-17: Special requirements for stage lighting, television, film and photography venues (indoor and outdoor)
(GB/T 7000:217-2023);
---Lamps Part 2-18: Special requirements for lamps for swimming pools and similar places (GB/T 7000:218-2023);
---Lamps Part 2-21: Special requirements for light strips (GB/T 7000:221-2023);
---Lamps Part 2-22: Special requirements for emergency lighting fixtures (GB/T 7000:222-2023);
---Lamps Part 2-23: Special requirements for extra-low voltage (ELV) lighting systems for light sources (GB/T 7000:223-
2023);
---Lamps Part 2-24: Special requirements for surface temperature lamps (GB/T 7000:224-2023);
---Lamps Part 2-25: Special requirements for lamps used in hospitals and rehabilitation building clinics (GB 7000:225-2008):
This document replaces GB 7000:9-2008 "Lamps - Part 2-20: Light strings with special requirements" and is consistent with GB 7000:9-2008
In addition to structural adjustments and editorial changes, the main technical changes are as follows:
a) Changed the scope (see Chapter 1, Chapter 1 of the:2008 edition);
b) Added four terms and their definitions including "connector with breaking capability" (see 3:3~3:6);
c) Changed the enclosure protection level of outdoor light strings (see 5:3, 4:2 of the:2008 edition);
d) The markings on the light strings and packaging have been changed (see Chapter 6, Chapter 5 of the:2008 edition);
e) Changed the temporary installation of protective light strings in the structure (see Chapter 7, Chapter 6 of the:2008 edition);
f) Changed the applicable scope of creepage distance and electrical clearance (see Chapter 8, Chapter 7 of the:2008 edition);
g) Changed the requirements for terminal blocks (see Chapter 10, Chapter 9 of the:2008 edition);
h) Changed the requirements for wire specifications and conductor cross-sectional area in external and internal wiring (see Chapter 11, Chapter 10 of the:2008 edition);
i) Added requirements for sealing parts (see 12:5);
j) Changed the test voltage of durability test and thermal test (see 13:2, 12:1 of the:2008 edition);
k) Added short-circuit test requirements for rectifiers (see 13:4);
l) Changed the test requirements for screw-type lampholders and bayonet-type lampholders in heat resistance, fire resistance and marking resistance (see Chapter 16,:2008 edition
Chapter 15);
m) Added the normative appendix "Requirements for interconnecting connectors for light strings" (see Appendix A):
This document is modified to adopt IEC 60598-2-20:2022 "Lamps Part 2-20: Special Requirements Light Strings":
The technical differences between this document and IEC 60598-2-20:2022 and their reasons are as follows:
---Replaced IEC 60598-1 with normatively quoted GB/T 7000:1 to facilitate the application of the series of standards:
The following editorial changes have been made to this document:
---Replaced IEC 60050-581:2008 with the informative reference GB/T 4210-2015;
---Replaced IEC 60598-2-24 with the informative reference GB/T 7000:204;
---Replaced IEC 60598-2-21 with the informative reference GB/T 7000:221:
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed by China Light Industry Federation:
This document is under the jurisdiction of the National Lighting Appliances Standardization Technical Committee (SAC/TC224):
This document was drafted by: Guangzhou Customs Technology Center, Shanghai Times Lighting Electrical Testing Co:, Ltd:, Huizhou NVC Optoelectronics Technology Co:, Ltd:
Co:, Ltd:, Longwei Group (Linhai) Co:, Ltd:, Taizhou Spark Lighting Co:, Ltd:, and Shanghai Quality Supervision and Inspection Technology Research Institute:
The main drafters of this document: Li Min, Lu Shiming, Xiao Qiuxia, Qu Longkui, Chen Yubin, Jiang Lili, Shi Xiaohong, Yu Zaidao, and Yang Yue:
The previous versions of this document and the documents it replaces are as follows:
---First published as GB 7000:9-1998 in:1998, first revised in:2008;
Introduction
GB (/T)7000 "Lamps" is intended to consist of the following parts:
---Part 1: General requirements and tests: The purpose is to specify the use of electric light sources and lamps with a power supply voltage not exceeding 1000V:
General requirements:
---Part 2-1: Special requirements for fixed general-purpose luminaires: The purpose is to stipulate that the power supply voltage does not exceed 1000V for electro-optical
Requirements for fixed general-purpose luminaires whose source is a light source:
---Part 2-2: Special requirements for recessed lighting fixtures: The purpose is to stipulate that electric light sources with power supply voltages not exceeding 1000V
Light source requirements for recessed lighting fixtures:
---Part 2-3: Special requirements for road and street lighting fixtures: The purpose is to stipulate that the power supply voltage of the electric light source does not exceed
Requirements for 1000V lighting fixtures for roads, street lighting and other outdoor public places, as well as tunnel lighting and normal ground lighting
Requirements for column-type synthetic luminaires with a minimum total height above the surface of 2:5m:
---Part 2-4: Removable general-purpose lamps with special requirements: Purpose is to provide for indoor and/or outdoor use other than portable lamps
Requirements for portable general-purpose lamps with power supply voltage not exceeding 250V and using electric light sources as light sources (such as for courtyard use):
---Part 2-5: Special requirements for floodlights: The purpose is to stipulate the use of electric light sources and power supply voltages not exceeding 1000V:
lighting requirements:
---Part 2-8: Special requirements for portable lamps: The purpose is to stipulate the use of portable electric light sources with a power supply voltage not exceeding 250V:
Requirements for lamps and similar portable luminaires:
---Part 2-10: Removable lamps for children with special requirements: The purpose is to stipulate the safety requirements for removable lamps for children:
Use tungsten lamps or single-ended fluorescent lamps with a power supply voltage not exceeding 250V:
---Part 2-11: Special requirements for aquarium lighting fixtures: The purpose is to stipulate the use of electric light sources with a power supply voltage not exceeding 1000V
Special requirements for home aquarium lighting fixtures:
---Part 2-12: Night lights with special requirements for power outlet installation: The purpose is to stipulate the use of electric light sources and power supply voltages not exceeding
Requirements for night lights installed in AC 250V50/60Hz power sockets:
---Part 2-13: Special requirements for ground recessed lighting fixtures: The purpose is to stipulate the use of electric light sources and power supply voltages not exceeding
1000V ground recessed lighting requirements:
---Part 2-14: Special requirements for the use of cold cathode tubular discharge lamps (neon lamps) and similar equipment: The purpose is to stipulate
The power supply voltage does not exceed 1000V and the no-load rated output voltage is greater than 1000V but not more than 10000V:
Requirements for the manufacture and use of cold cathode tubular discharge lamps and similar equipment:
---Part 2-17: Special requirements for stage lighting, television, film and photography venues (indoor and outdoor) lighting fixtures: The purpose is to provide for the
Electric light source, power supply voltage does not exceed 1000V, used in outdoor and indoor stage lighting, television, movie and photography venues
Requirements for luminaires (including spot and floodlight projections):
---Part 2-18: Special requirements for lighting fixtures in swimming pools and similar places: The purpose is to provide for use in water or contact with water
Safety requirements for fixed luminaires:
---Part 2-20: Special requirements for light strings: The purpose is to stipulate that the power supply voltage does not exceed 250V and is used for indoor or outdoor installations:
Safety requirements for light strings with light sources connected in series, parallel or a series/parallel combination:
---Part 2-21: Special requirements for light strips: The purpose is to stipulate that the power supply voltage does not exceed 250V and is used for indoor or outdoor installations:
There are safety requirements for light strips (sealed light strings) that are irreplaceable in series or parallel and combinations of series and parallel light sources:
---Part 2-22: Special requirements for emergency lighting fixtures: The purpose is to stipulate that the emergency power supply voltage does not exceed 1000V:
Light source requirements for emergency lighting fixtures:
---Part 2-23: Special requirements for extra-low voltage (ELV) light sources and extra-low voltage lighting systems: The purpose is to specify the supply voltage
Requirements for extra-low voltage lighting systems for extra-low voltage (ELV) light sources not exceeding 1000V for ordinary indoor use:
---Part 2-24: Special requirements limiting surface temperature lamps: The purpose is to stipulate that the power supply voltage of the electric light source does not exceed
1000V lamps used in places where the outer surface temperature of the lamp needs to be limited due to thermal effects, risk of material burning or deterioration
Require:
---Part 2-25: Special requirements for lamps used in hospitals and rehabilitation building clinics: The purpose is to regulate the use of tungsten lamps, fluorescent lamps and other
Other gas discharge lamps are used as light sources and the power supply voltage does not exceed 1000V for medical treatment and examination in clinics and in hospitals:
and safety requirements for lighting fixtures used in medical care in rehabilitation buildings:
When this document cites any clause of GB/T 7000:1, it stipulates the scope of application of the clause and the test sequence of each test, and stipulates
necessary additional requirements:
Luminaires Part 2-20: Special Requirements Light Strings
1 Scope
This document specifies the supply voltage not exceeding 250V, for indoor or outdoor use, equipped with series, parallel or series/parallel combination connection of light sources
Safety requirements for light strings:
For combined lamps containing light strips (also called sealed light strings), see GB/T 7000:221:
This document applies to light strings provided with fixed or removable decorative accessories:
For light strings equipped with plug-in lamp holders, the corresponding requirements of this document shall apply:
This document applies to the following light strings:
a) Permanently install string lights;
b) Temporarily install light strings;
c) Temporary installation of protective string lights (TPL):
Note 1: A festoon light string refers to a light string supported by cables or fixed on a lamp holder and permanently connected to fixed wiring: festoon light strings are mainly used for permanent installation
Indoor or outdoor lighting applications:
Note 2: Decorative light string refers to a light string supported by cables and temporarily connected to fixed wiring: Decorative string lights are mainly used for home, indoor or indoor/outdoor applications:
Installed lighting applications, see Figure 1 for examples:
Note 3: Temporarily installed protected light string (TPL) means that all lamp holders are fixed on the building or building, the light source is enclosed in a protective shell, and is connected to the fixed wiring:
string lights when connected: Temporary installation of protected light strings is primarily used in lighting applications in harsh conditions:
For light strings using non-standard lamps (e:g: plug-in lamps), the lamps are considered part of the string and are therefore included in the test:
Note 4: For light string products permanently fixed on the frame or pre-installed on the Christmas tree, the relevant provisions of GB/T 7000:204 also apply:
Note 5: In some countries, the word "chains" is replaced by "strings":
Note 6: Candlestick lamps are tested according to GB/T 7000:204:
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
GB/T 7000:1 Luminaires Part 1: General requirements and tests (GB/T 7000:1-2023, IEC 60598-1:2020, MOD)
ISO 4046-4:2016 Paper, paperboard, pulp and their terms Glossary Part 4: Paper and paperboard grades and processed products
products)
IEC 60227-5 Polyvinyl chloride insulated cables with rated voltage 450/750V and below Part 5: Flexible cables (flexible wires)
cables(cords)]
Note: GB/T 5023:5-2008 Polyvinyl chloride insulated cables with rated voltage 450/750V and below Part 5: Flexible cables (flexible wires) (IEC 60227-
5:2003,IDT)
IEC 60238:2016/AMD1:2017
IEC 60238:2016/AMD2:2020
Note: GB/T 17935-2023 Screw lamp holder (IEC 60238:2020, IDT)
......
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