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GB/T 5169.20-2021: Fire hazard testing for electric and electronic products - Part 20: Surface spread of flame. Summary and relevance of test methods
Status: Valid GB/T 5169.20: Evolution and historical versions
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| GB/T 5169.20-2021 | English | 454 |
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Fire hazard testing for electric and electronic products - Part 20: Surface spread of flame. Summary and relevance of test methods
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GB/T 5169.20-2021
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| GB/T 5169.20-2013 | English | 959 |
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Fire hazard testing for electric and electronic products -- Part 20: Surface spread of flame -- Summary and relevance of test methods
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| GB/T 5169.20-2006 | English | 599 |
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Fire hazard testing for electric and electronic products -- Part 20: Surface spread of flame -- Summary and relevance of test methods
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Basic data | Standard ID | GB/T 5169.20-2021 (GB/T5169.20-2021) | | Description (Translated English) | Fire hazard testing for electric and electronic products - Part 20: Surface spread of flame. Summary and relevance of test methods | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K04 | | Word Count Estimation | 26,286 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 5169.20-2021: Fire hazard testing for electric and electronic products - Part 20: Surface spread of flame. Summary and relevance of test methods
---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.
Fire hazard testing for electric and electronic products - Part 20.Surface spread of flame.Summary and relevance of test methods
ICS 13.220.40;29.020
CCSK04
National Standards of People's Republic of China
Replace GB/T 5169.20-2013
Fire hazard test of electric and electronic products Part 20.
Summary and relevance of flame surface spread test methods
(IEC 60695-9-2.2014,Firehazardtesting-Part 9-2.Surfacespreadof
Released on 2021-10-11
2022-05-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅰ
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Summary of the test method 5
4.1 Small-scale and medium-scale combustion test 5
4.2 Large-scale combustion test 10
Appendix A (informative) ISO 5658-2 repeatability and reproducibility data 16
Appendix B (informative) ISO 5658-4 repeatability and reproducibility data 17
Appendix C (informative) NFPA262 repeatability and reproducibility data 18
Reference 19
Table 1 Summary and comparison of various vertical steel ladder test methods of IEC 60332 [21] 11
Table 2 Summary and comparison of non-IEC vertical steel ladder test methods 12
Table A.1 Inter-laboratory test data regarding ISO 5658-2 16
Table B.1 About the repeatability and reproducibility of ISO 5658-4 data 17
Table C.1 Regarding the repeatability and reproducibility of NFPA262 data 18
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document is part 20 of GB/T 5169 "Fire Hazard Test for Electrical and Electronic Products". GB/T 5169 has released the following
part.
---Part 1.Terminology of fire test;
---Part 2.General rules for fire hazard assessment guidelines;
---Part 5.Test flame needle flame test method device, confirmation test method and guidance;
---Part 9.Guidelines for Fire Hazard Assessment, General Rules for Pre-selection Test Procedures;
---Part 10.Glow wire/hot wire basic test method Glow wire device and general test method;
---Part 11.Glow wire/hot wire basic test method Glow wire flammability test method of finished product (GWEPT);
---Part 12.Glow-wire/hot-wire basic test methods. Glow-wire flammability index (GWFI) test method for materials;
---Part 13.Glow Wire/Glow Wire Basic Test Method Material Glow Wire Ignition Temperature (GWIT) test method;
---Part 14.Test flame 1kW nominal pre-mixed flame device, confirmation test method and guide;
---Part 15.Test flame 500W flame device and confirmation test method;
---Part 16.Test flame 50W horizontal and vertical flame test method;
---Part 17.Test flame 500W flame test method;
---Part 18.General rules for the toxicity of combustion streams;
---Part 19.Abnormal hot mold compression stress release deformation test;
---Part 20.Summary and correlation of flame surface spread test methods;
---Part 21.Abnormal hot ball pressure test method;
---Part 22.Test flame 50W flame device and confirmation test method;
---Part 23.Test flame 500W vertical flame test method for tubular polymeric materials;
---Part 24.Guidelines for Fire Hazard Assessment Insulating Liquids;
---Part 25.General Rules for Smoke Blur;
---Part 26.Summary and relevance of smoke fuzzy test methods;
---Part 29.General rules for heat release;
---Part 30.Summary and relevance of heat release test methods;
---Part 31.General rules for the spread of flames on the surface;
---Part 32.Heat release of heat release of insulating liquid;
---Part 33.Guideline for Fire Hazard Assessment, General Rules for Ignitability;
---Part 34.Summary and correlation of ignitability test methods for fire hazard assessment guidelines;
---Part 35.General rules for the corrosion hazards of combustion streams;
---Part 36.Summary and correlation of the corrosion hazard test methods of the combustion stream;
---Part 38.Summary and correlation of the toxicity test method of the combustion stream;
---Part 39.Use and explanation of the results of the toxicity test of the combustion stream;
---Part 40.Toxicity evaluation device and test method of combustion stream;
---Part 41.Calculation and explanation of the results of the toxicity evaluation test of the combustion stream;
---Part 42.Test flame confirmation test guidelines;
---Part 44.Guidelines for Fire Hazard Assessment, Fire Hazard Assessment;
---Part 45.Fire hazard assessment guidelines for fire safety engineering;
--- Part 46.Determination of the characteristic heat flux during ignition of the non-contact flame source of the test flame.
This document replaces GB/T 5169.20-2013 "Fire hazard test of electrical and electronic products-Part 20.Flame surface spread test
``Method Summary and Relevance'', compared with GB/T 5169.20-2013, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) Updated normative reference documents (see Chapter 2, Chapter 2 of the.2013 edition);
b) updated terms and definitions (see Chapter 3, Chapter 3 of the.2013 edition);
c) The measurement parameters "burnout length" and "flame surface spread rate" in 4.1.1 test method are changed to "linear burning rate (HB points)
Class)" and "Vertical Spread of Flame (V Class)" (see 4.1.1.4, 4.1.1.3 of the.2013 edition);
d) The range of non-applicable products for which the test method is changed (see 4.1.2.1, 4.1.2.1 of the.2013 edition);
e) The requirements for test flames have been added (see 4.1.3.1);
f) The requirements for sample size are changed (see 4.1.3.1, 4.1.3.1 of the.2013 edition);
g) The scope of application of the test method is changed (see 4.1.4.1, 4.1.4.1 of the.2013 edition);
h) The use conditions and scope of the test method have been changed (see 4.1.4.5, 4.1.4.5 of the.2013 edition);
i) The "flame spread meter" test method has been added (see 4.1.6);
j) Added the description of some other parameters that can be measured during the experiment (see 4.2.2.2, 4.2.2.4 and 4.2.2.6);
k) Added description of repeatability and reproducibility test (see 4.2.2.5);
l) Table 1 is changed, the length of the steel ladder in the table is changed from the original "4m" to "3.5m", and Note 2 is changed (see Table 1, Table 1 of the.2013 edition);
m) Table 2 is changed, the comparison of vertical steel ladder test methods in EN50399 is added in the last column, and the footnote of the chart is added
j and k (see Table 2,.2013 edition of Table 2).
The translation method used in this document is equivalent to IEC 60695-9-2.2014, Fire Hazard Test Part 9-2.Flame Surface Spread Test
Summary and relevance of test methods.
The Chinese documents that have consistent correspondence with the normatively cited international documents in this document are as follows.
---GB/T 5169.1-2015 Fire hazard test for electric and electronic products Part 1.Fire test terminology (IEC 60695-4.
2012, IDT);
---GB/T 16499-2017 Preparation of electrical and electronic safety publications and basic safety publications and multi-disciplinary shared safety publications
Guidelines for the application of objects (IEC Guide104.2010, NEQ);
---GB/T 20002.4-2015 Drafting of specific content in the standard Part 4.Safety related content in the standard (ISO /IEC
Guide51.2014, MOD).
The following editorial changes have been made to this document.
---In order to be consistent with the existing standard series, the name of this document is changed to "Fire Hazard Test of Electrical and Electronic Products Part 20.Flame Table
Summary and relevance of surface spread test methods.
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed by the China Electrical Equipment Industry Association.
This document is under the jurisdiction of the National Standardization Technical Committee for Fire Hazard Testing of Electrical and Electronic Products (SAC/TC300).
Drafting organizations of this document. China National Electrical Equipment Research Institute Co., Ltd., Shenzhen Institute of Inspection and Quarantine, China Quality Certification
Center, Guangdong Midea Refrigeration Equipment Co., Ltd., the Fifth Institute of Electronics of the Ministry of Industry and Information Technology, Sichuan Fire Research Institute of the Ministry of Emergency Management, Weikai
Testing Technology Co., Ltd., Shenzhen Customs Industrial Products Testing Technology Center, Guangzhou Customs Technology Center, Hunan Disaster Prevention Technology Co., Ltd., Shenzhen
Metrology Quality Inspection Research Institute, Dongguan Yuehua Electronic Technology Co., Ltd.
The main drafters of this document. Liu Xiuzhen, Xu Beibei, Kang Wei, Zhang Hanping, Zhang Yuanqin, Deng Xiaobing, Liu Yan, Ma Jingjing, Li Hao, Li Bo, Zhuang Hui,
Li Guangbin and Chen Baohui.
The previous releases of this document and the documents it replaced are as follows.
--- First published in.2006 as GB/T 5169.20-2006, first revised in.2013;
---This is the second revision.
Introduction
All circuits must consider the risk of fire. The purpose of component, circuit and equipment design and material screening is to reduce the possibility of fire
This is true even in the event of foreseeable abnormal usage, malfunctions and failures. GB/T 5169 "Fire hazard test for electrical and electronic products
The purpose of the “inspection” is to save lives and protect property by reducing the number of fires or reducing the severity of fires. It can be passed.
---Try to prevent live parts from triggering ignition. If ignition occurs, limit the scope of the fire to the enclosure of electrical and electronic products;
--- Attempt to minimize the spread of the flame to the product shell, and to reduce combustion products including heat, smoke, toxic or corrosive gases, etc.
The harmful effects of materials are minimized.
GB/T 5169 is now composed of 33 parts, divided into three sub-fields.
--- Fire hazard test evaluation guidelines and terminology standards, including 1 term and 5 evaluation guidelines, aimed at the professional field
Provide guidelines and reference procedures for fire hazard assessment;
---Small-scale fire test standards, including 4 glow wire/hot wire basic test methods, 8 flame test methods, and 2 abnormal resistance
The thermal capacity test method is intended to introduce the methods applicable to electrical and electronic equipment manufacturers and testing institutions, based on specific heat source models.
A small-scale test method for the heat source that is intended to cause a fire;
---The hazard assessment standard of combustion flow, including 2 corrosiveness, 2 smoke blur, 5 toxicity, 2 heat release, 2 flame surface
Spread, the purpose is to provide measurement of the combustion flow toxicity, corrosivity, smoke blur and heat release of electrical and electronic products and their materials
The guidelines and current technical status of test methods.
The electrical and electronic products that were originally victims of the fire may also contribute to the fire. The fire hazard increases with the increase of the fire area.
In some cases, flashover and complete fire were caused. This is a typical fire situation in a building. Therefore, the speed and range of measuring the spread of the flame surface is
useful. The flame surface spread test aims to provide guidance for product committees who wish to incorporate the flame surface spread test method into product standards.
guide. It consists of two parts.
--- Part 31.General rules for the spread of flame surface. The purpose is to give an assessment of the spread of flame on the surface of electrical and electronic products and materials used
General guidelines.
--- Part 20.Summary and correlation of flame surface spread test methods. The purpose is to give an evaluation of electrical and electronic products or their
Use the general test method for the spread of flame on the surface of the material.
This revision of GB/T 5169.20 is conducive to improving the quality of my country's electrical and electronic products, and better promoting trade, communication and technology.
Technical cooperation.
Fire hazard test of electric and electronic products Part 20.
Summary and relevance of flame surface spread test methods
1 Scope
This document describes an overview of various test methods used to determine the spread of flame on the surface of electrical and electronic products or the materials used in them.
The test methods given in this document represent the current state of the art, and where appropriate, the relevance and use of these test methods are explained.
Special Instructions.
This document cannot replace those standards that have been published and serve as the only valid reference documents.
This document is intended for product committees to prepare standards based on the principles specified in IEC Guide104 and ISO /IEC Guide51.
use.
One of the tasks of the Product Committee is to use this series of standards wherever applicable when compiling standards in this field. Unless relevant
The standard specifically mentions or lists not applicable, otherwise the requirements, test methods or test conditions of this document will apply.
2 Normative references
The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
ISO 13943.2008 Firesafety-Vocabulary
IEC 60695-4 Fire hazard test Part 4.Terminology for fire test of electrical products (Firehazardtesting-Part 4.
Terminologyconcerningfiretestsforelectrotechnicalproducts)
The compilation of IEC Guide104 safety publications and the application guidelines for basic safety publications and multi-professional public safety publications (The
preparationofsafetypublicationsandtheuseofbasicsafetypublicationsandgroupsafetypublica-
tions)
ISO /IEC Guide51 Safety aspects-Guidelinesfortheir
inclusioninstandards)
3 Terms and definitions
The following terms and definitions defined by ISO 13943.2008 and IEC 60695-4 apply to this document.
3.1
Burnedlength
The maximum length of the overfire area in a specific direction.
Note. Its representative unit is meter (m).
Reference. Damaged length (3.6)
[Source. ISO 13943.2008,4.31]
3.2
Char (noun) char (noun)
Carbon residue formed by pyrolysis (3.26) or incomplete combustion (3.5).
[Source. ISO 13943.2008, 4.38]
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