GB/T 5169.46-2020Fire hazard testing for electric and electronic products - Part 46: Test flames - Determination of the characteristic heat flux for ignition from a non-contacting flame source (English PDF)

Foreword

GB/T 5169 "Fire Hazard Test for Electrical and Electronic Products" consists of the following parts:

---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 Preselected 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 method: Glow-wire flammability index (GWFI) test method for materials;

---Part 13: Glow wire/hot wire basic test method Glow wire ignition temperature (GWIT) test method of materials;

---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 thermal 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 correlation of smoke fuzzy test methods;

---Part 29: General rules for heat release;

---Part 30: Summary and correlation of heat release test methods;

---Part 31: General rules for flame surface spread;

---Part 32: Heat release of heat release of insulating liquid;

--- Part 33: Guideline for Fire Hazard Assessment, General Principles of Ignitability;

---Part 34: Guidelines for Fire Hazard Assessment Guidelines for ignitability test methods and correlation;

---Part 35: General rules for corrosion hazards of combustion streams;

---Part 36: Summary and correlation of the corrosion hazard test methods of combustion flow;

---Part 38: Summary and correlation of the toxicity test methods of combustion streams;

---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 guidelines for confirmation of test flames;

---Part 44: Guidelines for Fire Hazard Assessment, Fire Hazard Assessment;

---Part 45: Fire hazard assessment guidelines for fire safety engineering;

--- Part 46: Determination of characteristic heat flux during ignition in a non-contact flame source of the test flame:

This part is Part 46 of GB/T 5169:

This section was drafted in accordance with the rules given in GB/T 1:1-2009:

The translation method used in this part is equivalent to the IEC TS60695-11-11:2016 "Fire Hazard Test Part 11-11: Test Flame

Determination of characteristic heat flux during ignition in a non-contact flame source":

The Chinese documents that have a consistent correspondence with the international documents cited in this section are as follows:

---GB/T 5169:22-2015 Fire hazard test of electric and electronic products Part 22: Test flame 50W flame equipment

Set and confirm test method (IEC 60695-11-4:2011, IDT)

---GB/T 2918-2018 Standard environment for condition adjustment and testing of plastic specimens (ISO 291:2008, MOD)

---GB/T 9352-2008 Compression molding of plastic thermoplastic material samples (ISO 293:2004, IDT)

---GB/T 17037 (all parts) Preparation of plastic thermoplastic materials injection moulded samples [ISO 294 (all parts)]

---GB/T 5471-2008 Compression molding of plastic thermosetting plastic samples (ISO 295:2004, IDT)

---GB/T 16499-2017 Compilation 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)

This section has made the following editorial changes:

---In order to be consistent with the existing standard series, the name of this part is changed to "Fire Hazard Test of Electrical and Electronic Products Part 46: Test Fire

Determination of characteristic heat flux during ignition in a non-contact flame source:"

This part was proposed by China Electrical Equipment Industry Association:

This part 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 section: China Electrical Equipment Research Institute Co:, Ltd:, Guangdong Midea Refrigeration Equipment Co:, Ltd:, Dongguan Yuehua Electric

Technology Co:, Ltd:, Guangzhou Customs Technology Center, Jiangsu Topmilo Environmental Testing Equipment Co:, Ltd:, the Fifth Research Institute of Electronics of the Ministry of Industry and Information Technology

Research Institute, Weikai Testing Technology Co:, Ltd:, China Household Electrical Appliances Research Institute, Shandong Product Quality Inspection Institute, Shenzhen Metrology Quality Inspection

Research Institute, China Quality Certification Center, Beijing Tairuite Testing Technology Service Co:, Ltd:, Wuxi Sunan Testing Equipment Co:, Ltd:, Schneider

German Electric (China) Co:, Ltd: Shanghai Branch, Ningbo Ouzhi Electrical Technology Co:, Ltd:, Dongguan Customs Comprehensive Technology Center:

Introduction

The design of all electrical and electronic products needs to consider fire risk and potential fire hazards: Component, circuit and equipment design and materials

The purpose of material screening in this regard is to reduce the potential risk of fire accidents to an acceptable level, even if foreseeable abnormal use occurs:

The same is true for conditions such as use, failure and failure: IEC 60695-1-10 and IEC 60695-1-11 together provide information on how to achieve this

guide:

Fires involving electrical and electronic products may also be caused by non-electric external ignition sources: The overall risk assessment should consider this factor:

The purpose of the IEC 60695 series of standards is to protect life and property by reducing the number of fires or reducing the consequences of fires: it

able to pass:

---Try to prevent ignition of live parts: If ignition occurs, limit the fire to the enclosure of electrical and electronic products:

--- Attempt to minimize the spread of the flame to the outside of the product, and to include heat, smoke, toxic or corrosive combustion products

The harm impact is minimized:

This section applies to the measurement and description of the non-contact flame source heat of materials used for electrical products and their components under controlled laboratory conditions:

It is not suitable for describing or evaluating the fire hazard or fire risk of materials, products or components under actual fire conditions: Of course

However, its test results can be used as elements of fire hazard assessment, which takes into account all relevant aspects of assessing the fire hazard of a specific end use:

factor: Samples cut from finished products or components can be tested in this way:

This section may involve hazardous materials, operations and equipment: It cannot solve all security issues related to its use: User is responsible

Establish appropriate safety and health practices and determine the applicability of regulatory restrictions before use:

Test methods for determining flammability through flame contact have been developed and standardized, such as IEC 60695-11-10[1] and IEC 60695-

11-20[2] and ISO 4589-2[3]:

This method is the first to measure the characteristic heat flux (CHFI) of ignition in non-contact flame sources of electrical and electronic products and their component materials

experiment method: CHFI investigates the ignition characteristics from the perspective of incident heat flux: This test method simulates materials used in electrical and electronic products

The burning behavior of the material when the flame source is close to but not in contact with it: For example, candle flames are close to electrical and electronic products:

Fire hazard test for electric and electronic products

Part 46: Test flame in non-contact flame source

Determination of characteristic heat flux during light-off

1 Scope

This part of GB/T 5169 gives the materials used to determine when electrical and electronic products and their components ignite in a non-contact flame source:

The characteristic heat flux (CHFI) test method gives the relationship between light-off time and incident heat flux: Samples used in this test method

Taken from finished products or components:

This part is intended for product committees to compile standards based on the principles specified in IEC Guide104 and ISO /IEC Guide51:

One of the tasks of the product committee is to use this series of standards wherever applicable when writing its own standards: Unless relevant

Standard specifically mentioned or listed does not apply, otherwise the requirements, test methods or test conditions of this section are applicable:

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 article

Pieces: For undated references, the latest version (including all amendments) applies to this document:

ISO 291 Plastics-Standardatmospheresforconditioning

andtesting)

ISO 293 Plastics-Compression molding of test specimens (Plastics-Compression molding of test specimens)

ofthermoplasticmaterials)

ISO 294 (all parts) Preparation of injection molding test specimens of plastic thermoplastic materials (Plastics-Injection molding of

testspecimensofthermoplasticmaterials)

ISO 295 Plastics-Compression molding of test specimens of plastic thermosetting plastics (Plastics-Compression molding of test specimens of

thermosettingmaterials)

ISO 13943:2008 Firesafety-Vocabulary

ISO 14934-4:2014 Calibration of heat flux meters in fire tests Part 4: Guidelines for the use of heat flux meters in fire tests

(Firetests-Calibrationofheatfluxmeters-Part 4: Guidanceontheuseofheatfluxmetersinfire

tests)

ISO /IEC Guide51:1999 Safety aspects-Guidelinesfor

theirinclusioninstandards)

IEC 60695-11-4 Fire hazard test Part 11-4: Test flame 50W flame device and confirmation test method

(Firehazardtesting-Part 11-4:Testflames-50Wflame-Apparatusandconfirmationaltestmeth-

od)

The compilation of IEC Guide104 safety publications and the application guidelines for basic safety publications and multi-professional public safety publications (The

preparationofsafetypublicationsandtheuseofbasicsafetypublicationsandgroupsafetypublica-

tions)

3 Terms and definitions

The terms and definitions defined in ISO 13943:2008 and the following apply to this document: For ease of use, the following is repeated