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GB/T 5169.34-2023 English PDF

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GB/T 5169.34-2023: Fire hazard testing for electric and electronic products - Part 34: Guidance for assessing the fire hazard - Ignitability - Summary and relevance of test methods
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GB/T 5169.34-2023English599 Add to Cart 5 days [Need to translate] Fire hazard testing for electric and electronic products - Part 34: Guidance for assessing the fire hazard - Ignitability - Summary and relevance of test methods Valid GB/T 5169.34-2023

Standard similar to GB/T 5169.34-2023

GB/T 5169.33   GB/T 5169.31   GB/T 5169.30   

Basic data

Standard ID GB/T 5169.34-2023 (GB/T5169.34-2023)
Description (Translated English) Fire hazard testing for electric and electronic products - Part 34: Guidance for assessing the fire hazard - Ignitability - Summary and relevance of test methods
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard k04
Classification of International Standard 13.220.40, 29.020
Word Count Estimation 30,371
Date of Issue 2023-09-07
Date of Implementation 2024-04-01
Older Standard (superseded by this standard) GB/Z 5169.34-2014
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 5169.34-2023: Fire hazard testing for electric and electronic products - Part 34: Guidance for assessing the fire hazard - Ignitability - Summary and relevance of test methods


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ICS 13.220.40;29.020 CCSK04 National Standards of People's Republic of China Replace GB /Z 5169.34-2014 Fire hazard test for electrical and electronic products Part 34.Guidelines for fire hazard assessment Ignitability Summary and relevance of test methods (IEC 60695-1-21.2016,Firehazardtesting-Part 1-21.Guidancefor Released on 2023-09-07 Implemented on 2024-04-01 State Administration for Market Regulation Released by the National Standardization Administration Committee

Table of contents

Preface III Introduction IV 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 Summary of published test methods 4 4.1 General 4 4.2 Tests using hot air or electric heating 5 4.3 Tests using radiant heat 6 4.4 Oxygen index test 9 4.5 Basic test methods for glow wire/hot wire 10 4.6 Flame test 13 4.7 Arc test 15 Appendix A (informative) Applicability of test methods 19 Appendix NA (Informative) Published Part 21 of "Fire Hazard Test of Electrical and Electronic Products" Reference 23 Table 1 Main differences between IEC 60112 and ASTMD363816 Table A.1 Applicability of test methods19

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 34 of "Fire Hazard Test of Electrical and Electronic Products". "Fire Hazard Test of Electrical and Electronic Products" has been released See Appendix NA for some. This document replaces GB /Z 5169.34-2014 "Fire Hazard Test of Electrical and Electronic Products - Part 34.Guidelines for Fire Hazard Assessment" "Overview and Relevance of Ignition Test Methods", compared with GB /Z 5169.34-2014, in addition to structural adjustments and editorial changes, the main technical The technical changes are as follows. a) The standard attribute is changed from a guidance document to a recommended standard; b) Added instructions on the withdrawal of IEC 60695-2-20 (see 4.5.2); c) Added a description of the tracking index test in ASTM D3638 for comparison with IEC 60112 (see 4.7.1 and Table 1). This document is equivalent to IEC 60695-1-21.2016 "Fire Hazard Test Part 1-21.Guidelines for Assessment of Fire Hazard of Electrical Products Summary and Relevance of Ignition Test Methods". This document has made the following minimal editorial changes. ---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 34.Fire Hazard Summary and Relevance of Ignition Test Methods in Risk Assessment Guidelines; --- Move some of the informative citations in the normative citations in Chapter 2 to the references; ---Added informative appendix NA to list the published parts of the "Fire Hazard Test of Electrical and Electronic Products". 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 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). This document was drafted by. China Electrical Equipment Research Institute Co., Ltd., Shenzhen Customs Industrial Product Inspection Technology Center, China Institute of Technology (Beijing) Beijing) Testing and Certification Co., Ltd., Shandong Product Quality Inspection Research Institute, Weikai Testing Technology Co., Ltd., Guangdong Midea Refrigeration Equipment Co., Ltd. Division, Beijing Tai Ruite Testing Technology Service Co., Ltd., Shenzhen Institute of Metrology and Quality Inspection, Zhejiang Yuehua Telecommunications Co., Ltd., China Household Appliances Research Institute, Fifth Research Institute of Electronics of the Ministry of Industry and Information Technology, State Grid Sichuan Electric Power Company Electric Power Research Institute, Tianjin Jinhangji Institute of Computing Technology. The main drafters of this document. Liu Xiuzhen, Zhao Xingfang, Wan Cheng, Zhang Jing, Liu Xin, Zhang Hanping, Liu Yan, Gao Lingsong, Zhuang Hui, Wang Sheng, Peng Qiang, Zhang Yuanqin, Zhang Chenmeng, Zhang Tuqiang. The previous versions of this document and the documents it replaces are as follows. ---First released in.2014 as GB /Z 5169.34-2014; ---This is the first revision.

Introduction

The design of all electrical and electronic products needs to take into account fire risks and potential fire hazards. Design of components, circuits and parts and materials are screened to reduce the potential risk of fire to a tolerable level even in the event of foreseeable misuse, malfunction and failure. within the range. The purpose of the "Fire Hazard Test for Electrical and Electronic Products" is to save lives by reducing the number of fires or reducing the severity of fires. lives and protect property. It can be passed. ---Prevent ignition caused by live parts as much as possible. If ignition occurs, limit the ignition range to the housing of electrical and electronic products; --- Minimize the spread of flames outside the product shell and the harmful effects of combustion products including heat, smoke, toxic or corrosive gases Harmful effects are minimized. "Fire Hazard Test of Electrical and Electronic Products" now consists of 38 parts, divided into three major sub-fields. ---Fire hazard test assessment guidelines and terminology standards, including 1 terminology and 8 assessment guidelines, are intended to provide guidance in this professional field Provides guidance and reference procedures for fire hazard assessment; ---Small-scale fire test standards, including 4 basic glow wire/hot wire test methods, 9 flame test methods, 2 abnormal resistance The purpose of the thermal capacity test method is to introduce specific heat source models suitable for use by electrical and electronic equipment manufacturers and testing institutions. Methods for small-scale testing of heat sources intended to cause fires; ---Hazard assessment standards for combustion streams, including 2 corrosiveness, 2 smoke, 5 toxicity, 3 heat release, and 2 flame surface Spread, the purpose is to provide measurement of combustion flow toxicity, corrosiveness, smoke blur and heat release of electrical and electronic products and their materials. guidelines and the technical status of current test methods. Fires can cause harm to life and property by producing heat (thermal hazards) and toxic combustion streams, corrosive combustion streams, and smoke (non-thermal hazards). create a threat. Fires begin with ignition and in some cases may progress to flashover and complete ignition. Therefore, ignition resistance plays an important role in the evaluation of fire hazard. Defining aspects are considered one of the most important properties of materials. If there is no ignition, there is no fire. For most materials (except metals and some other elements), ignition occurs in the gaseous state. Combustible when mixed with air Ignition begins when the vapor temperature is so high that the exothermic oxidation reaction spreads rapidly. The ease of ignition depends on the chemical properties of the vapor, the ignition Material/air ratio and temperature are closely related. For liquids, flammable vapors result from the evaporation of the liquid, and the evaporation process depends on the temperature and chemical composition of the liquid. For solids, flammable vapors result from pyrolysis when the temperature of the solid is high enough. The evaporation process depends on the temperature and chemical composition of the solid, also Depends on the thickness, density, specific heat capacity and thermal conductivity of the solid. The ease with which a specimen ignites depends on many variables. Factors to consider when assessing ignition properties include. a) The geometry of the specimen, including thickness, and the presence of edges, corners or joints; b) any anisotropy; c) surface orientation; d) Air flow speed and direction; e) The nature and location of the ignition source; f) The magnitude and location of external heat flux; g) Whether the combustible material is a liquid or a solid. For these reasons, a variety of tests are used to evaluate the ignitability of electrical and electronic products and their constituent materials. This document describes the rating of electricians Test methods for ignitability of electronic products or materials used therein. This document also includes test methods with ignition resistance as an important quantitative indicator. this time The revision is conducive to keeping the technology in this field consistent with international standards, thereby improving the quality of my country's electrical and electronic products and promoting trade and exchanges. flow and technical cooperation. Fire hazard test for electrical and electronic products Part 34.Guidelines for fire hazard assessment Ignitability Summary and relevance of test methods

1 Scope

This document provides an overview of test methods for determining the ignition properties of electrical and electronic products and their materials, including taking ignition properties as important quantitative indicators test methods. This document presents test methods that represent the current state of the art and, where appropriate, the relevance and use of these test methods. Special instructions were given. This document is applicable to the assessment of the ignitability of electrical and electronic products and the materials used in them and their correlation with fire hazards. This document is intended to be used by technical committees when preparing standards based on the principles set out in IEC Guide104 and ISO /IEC Guide51 use. One of the tasks of the technical committee is to use this series of standards wherever applicable when writing standards in this field. unless relevant Standards are specifically mentioned or listed, otherwise the requirements, test methods or test conditions of this document will not apply.

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 5169.1-2015 Fire hazard test for electrical and electronic products Part 1.Fire test terminology (IEC 60695-4. 2012,IDT) ISO 13943.2017 Firesafety-Vocabulary

3 Terms and definitions

The following terms and definitions as defined in ISO 13943.2017 and GB/T 5169.1-2015 apply to this document. 3.1 burning combustion The exothermic reaction of a substance with an oxidizing agent. Note. Combustion usually emits a combustion stream, accompanied by flame (3.10) and/or glowing heat. [Source. ISO 13943.2017,3.55] 3.2 Finished productendproduct Products that can be used without modification. Note. A finished product can be a component of another finished product. [Source. GB/T 5169.1-2015,3.2.7] 3.3 fire fire (Usually) A combustion (3.1) process characterized by exhaust heat and combustion flow, often accompanied by smoke, flame (3.10), glowing heat, or a combination thereof.

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