GB/T 5169.11-2017 PDF in English
GB/T 5169.11-2017 (GB/T5169.11-2017, GBT 5169.11-2017, GBT5169.11-2017)
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Fire hazard testing for electric and electronic products -- Part 11: Glowing/hot-wire based test methods -- Glow-wire flammability test method for end-products (GWEPT)
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| GB/T 5169.11-2006 | English | 105 |
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Fire hazard testing for electric and electronic products -- Part 11: Glowing/hot-wire based test methods -- Glow-wire flammability test method for end-products
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Fire hazard testing for electric and electronic products. Test methods. Glow-wire end-product test and guidance
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Standards related to (historical): GB/T 5169.11-2017
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GB/T 5169.11-2017: PDF in English (GBT 5169.11-2017) GB/T 5169.11-2017
Fire hazard testing for electric and electronic products--Part 11. Glowing/hot-wire based test methods--Glow-wire flammability test method for end-products (GWEPT)
ICS 13.220.40; 29.020
K04
National Standards of People's Republic of China
Replace GB/T 5169.11-2006
Electrical and electronic products fire hazard test
Part 11. Basic test methods for glow wire/hot wire
Glow wire flammability test method (GWEPT)
Part 11. Glowing/hot-wirebasedtestmethods-
[IEC 60695-2-11.2014, Firehazardtesting-
Part 2-11. Glowing/hot-wirebasedtestmethods-
Glow-wireflammabilitytestmethodforend-products(GWEPT), IDT]
2017-12-29 released.2018-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Administration issued
Content
Foreword I
Introduction III
1 range 1
2 Normative references 1
3 Terms and Definitions 1
4 sample 3
5 test device 4
6 Temperature measurement system calibration 4
7 status adjustment 5
8 Test procedure 5
9 Observations and Measurements 6
10 test results evaluation 6
11 Test report 6
12 Information to be given in the relevant product standards 6
Appendix A (informative) GWEPT temperature recommendation 8
Reference 9
Foreword
GB/T 5169 "Electrical and Electronic Products Fire Hazard Test" consists of the following parts.
--- Part 1. Terminology for ignition test;
--- Part 2. General guidelines for the assessment of fire hazard;
---Part 5. Test flame test method, test method and guide;
--- Part 9. General rules for pre-selection test procedures for fire hazard assessment guidelines;
--- 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 (GWEPT);
--- Part 12. Glow wire/hot wire basic test method Glow wire flammability index (GWFI) test method;
--- Part 13. Glow wire/hot wire basic test method Glow wire light-off temperature (GWIT) test method for materials;
---Part 14. Test flame 1kW nominal premixed flame device, validation test method and guidelines;
---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 principles of toxicity of combustion streams;
---Part 19. Unnormal thermal compression stress release deformation test;
--- Part 20. Summary and correlation of test methods for flame surface spread;
--- Part 21. Unusual hot ball pressure test method;
--- Part 22. Test flame 50W flame device and confirmation test method;
--- Part 23. Test flame tube-shaped polymeric material 500W vertical flame test method;
--- Part 24. Fire hazard assessment guidelines for insulating liquids;
--- Part 25. General rules for smoke blur;
--- Part 26. Summary and correlation of smoke fuzzing test methods;
--- Part 27. Smoke fuzzy small-scale static test method instrument description;
--- Part 28. Smoke fuzzy small-scale static test method materials;
---Part 29. General rules for heat release;
--- Part 30. Summary and correlation of heat release test methods;
--- Part 31. General rules for the spread of flame surfaces;
--- Part 32. Heat release of heat release insulating liquids;
--- Part 33. Fire hazard assessment guidelines for general ignitability;
--- Part 34. Fire hazard assessment guidelines Summary and correlation of ignitability test methods;
--- Part 35. General rules for corrosion hazards of combustion streams;
--- Part 36. Summary and correlation of test methods for corrosion hazards of combustion flows;
--- Part 38. Summary and correlation of toxicity test methods for combustion streams;
--- Part 39. Use and description of the toxicity test results of the combustion stream;
--- Part 40. Toxic toxicological assessment devices and test methods for combustion streams;
--- Part 41. Calculation and description of test results for toxic toxicity assessment of combustion streams;
--- Part 42. Test flame confirmation test guidelines;
--- Part 44. Fire hazard assessment guidelines for fire hazard assessment.
This part is the 11th part of GB/T 5169.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 5169.11-2006 "Electrical and Electronic Products Fire Hazard Test Part 11. Glow Wire/Hot Wire Basic Test
The test method for the glow ignitability of finished products is compared with GB/T 5169.11-2006. The main technical changes are as follows.
--- Increased the role and purpose of the test method (see Chapter 1, Chapter 1 of the.2006 edition);
--- Added "small parts" and "ignorable quality samples" without the explicit provisions of this test (see 4.1);
--- Increased the requirement for the distance between the bottom layer and the sample under unknown conditions (see Chapter 5, Chapter 5 of the.2006 edition);
--- Increased the provisions of the test conditions (see 7.2, 7.3,.2006 edition of Chapter 8);
--- Move the "severe rating" as the test temperature requirement to the chapter of the test procedure (see 8.2, Chapter 6 of the.2006 edition);
--- Removed the "initial measurement" of the visual inspection of the sample (Chapter 9 of the.2006 edition);
--- Added provisions for the format of test reports (see Chapter 11);
--- Amend Appendix A "Glow Wire Test Guidelines" to "GWEPT Temperature Recommendations" guide, improve the method of selecting test temperature
(See Appendix A, Appendix A of the.2006 edition).
This section uses the translation method equivalent to IEC 60695-2-11.2014 "Fire hazard test Part 2-11. Glow wire/hot wire base
Glow wire flammability test method (GWEPT) of the finished test method.
The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows.
--- GB/T 5169.10-2017 Electrical and electronic products - Fire hazard testing - Part 10. Glowing wire/hot wire basic test method
Glow wire device and general test method (IEC 60695-2-10.2013, IDT)
---GB/T 16499-2008 Preparation of safety publications and application of basic safety publications and multi-disciplinary shared safety publications
Guidelines (neq IEC Guide 104..1997)
---GB/T 20002.4-2015 Drafting of specific content in the standard Part 4. Content related to safety in the standard (ISO /
IEC Guide 51..2014, MOD)
This section has made the following editorial changes.
--- In line with the existing standard series, change the standard name to "Electrical and Electronic Products Fire Hazard Test Part 11. Glow Wire /
Hot wire basic test method Glow wire flammability test method (GWEPT).
This part was proposed by China Electrical Equipment Industry Association.
This part is under the jurisdiction of the National Standardization Technical Committee for Fire and Hazard Testing of Electrical and Electronic Products (SAC/TC300).
This section is responsible for drafting unit. China Electric Apparatus Research Institute Co., Ltd.
Participated in the drafting of this section. Zhuhai Gree Electric Co., Ltd., Zhongjiayuan (Beijing) Testing and Certification Co., Ltd., Weikai Testing Technology
Technology Co., Ltd., Guangdong Entry-Exit Inspection and Quarantine Bureau Inspection and Quarantine Technology Center, Guangdong Yuanrong New Materials Co., Ltd., Yuehua Holding Group Co., Ltd.
The Fifth Institute of Electronics of the Ministry of Industry, Industry and Information Technology, Beijing Tairuite Testing Technology Service Co., Ltd., Wuxi Sunan Test Equipment
Company, Shenzhen Institute of Metrology and Quality Inspection, China Electronics Technology Standardization Research Institute, Dongguan Yuehao Electronic Technology Co., Ltd., China
Quality Certification Center.
The main drafters of this section. Huang Kaiyun, Fan Lingyun, Wan Cheng, Liu Yan, Wu Zheng, Wu Qian, Chen Xin, Wang Chaosheng, Zhang Yuanqin, Gao Lingsong, Ni Yunan,
Wang Yinan, Li Yuxi, Li Guangbin, Wang Ruifeng, Li Bowen.
The previous versions of the standards replaced by this section are.
---GB/T 5169.11-1997, GB/T 5169.11-2006.
introduction
This introduction provides a background for presenting and developing this section and how to determine the scope of this section.
All electrical and electronic products must be designed with fire risk and potential fire hazard in mind. Design of components, circuits and products, and
The purpose of the screening of materials is to understand potential fires under normal operating conditions and in the case of reasonably foreseeable abnormal use, failure and failure.
The risk is reduced to an acceptable level. IEC 60695-1-10 and IEC 60695-1-11 developed by IEC /TC89, how to achieve
This purpose provides guidance.
The primary purpose of IEC 60695-1-10 and IEC 60695-1-11 is to provide guidance for the following actions.
a) prevent the ignition of live parts;
b) If ignition occurs, the fire is confined to the electrical and electronic product enclosure.
The secondary purpose is to minimize the extent to which the flame spreads outside the product, as well as to the combustion stream such as heat, smoke, toxicity and/or corrosive
Harmful effects are minimized.
Fires involving electrical and electronic products may also be caused by non-electric external sources of ignition. This factor should be considered in the overall risk assessment.
In electrical equipment, superheated metal parts can be used as an ignition source. In the glow wire test, it is simulated with a hot glow wire.
Source.
IEC 60695-2-10 describes a glow wire test device and a general test method, IEC 60695-2-12 describes the glow wire of the material.
The flammability index (GWFI) test method, IEC 60695-2-13, describes the glow wire light-off temperature (GWIT) test method for materials.
This section is used to assess the response of a finished product to heat when it is in contact with a heating wire under controlled laboratory conditions. This facilitates exposure to overheating stress
Evaluation of finished products in (eg, fault current through wires, overload of components, and/or poor contact). This section cannot be used alone for description or review.
Estimate the risk of fire or fire of a product or component under actual fire conditions. However, the results of this test can be taken into account for all factors
The element of the fire risk assessment, which is related to the ignition risk assessment for a particular end use.
This section may involve hazardous materials, operations, and equipment. Its purpose is not to solve all the security issues related to it.
question. Users of this section should take appropriate safety and health measures and determine their applicability and limitations before using this section.
Electrical and electronic products fire hazard test
Part 11. Basic test methods for glow wire/hot wire
Glow wire flammability test method (GWEPT)
1 Scope
This part of GB/T 5169 specifies a test method for finished products. It simulates thermal stress through an electric heat source to represent the fire hazard.
This test method is used to check. the ignition resistance of the finished product exposed to the electric heat source or the fire resistance after the ignition under the specified test conditions.
Flame spread ability. However, this section does not currently contain an analysis of the hazard of fire in the field of flammability and the spread of flames to other products.
This section is intended for the product committee to prepare in accordance with the principles set out in IEC Guide 104.2010 and ISO /IEC Guide 51.1999.
standard.
One of the tasks of the Product Standards Committee is to use this series of standards wherever applicable. Unless relevant
Special mention or list, otherwise the requirements, test methods or test conditions of this section will not apply.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
IEC 60695-2-10 Fire hazard testing - Part 2-10. Glowing wire/hot wire basic test method Glowing wire device and general test
Method (Firehazardtesting-Part 2-10. Glowing/hot-wirebasedtestmethods-Glow-wireapparatus
Andcommontestprocedure)
IEC Guide 104 Preparation of safety publications and application guidelines for basic safety publications and multi-disciplinary shared safety publications (The
Preparationofsafetypublicationsandtheuseofbasicsafetypublicationsandgroupsafetypublica-
Tions)
ISO /IEC Guide 51 Guidelines for safety aspects in safety aspects (Safetyaspects-Guidelinesfortheir
Inclusioninstandards)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Burning (intransitiveverb) burn(intransitiveverb)
The material undergoes an exothermic reaction with an oxidant.
[ISO 13943.2008, definition 4.28]
3.2
Flammability (adjective) combustible(adjective)
Can start to burn and burn.
[ISO 13943.2008, definition 4.43]
3.3
Combustion combustion
An exothermic reaction of a substance with an oxidant.
Note. Combustion usually emits a stream of combustion accompanied by flames and/or heat.
[ISO 13943.2008, definition 4.46]
3.4
Shell enclosure
< Electrical and Electronic Engineering> Covers for electrical and mechanical parts of protective equipment.
Note. Except for cables.
[ISO 13943.2008, definition 4.78]
3.5
Finished product endproduct
A product that can be used without modification.
Note. A finished product can be another finished component.
[IEC 60695-4.2012, definition 3.2.7]
3.6
Fire danger firehazard
An undesired potential substance or condition caused by a fire.
[ISO 13943.2008, definition 4.112]
3.7
Fire hazard assessment firehazardassessment
Assessment of the cause of the fire, the likelihood and type of subsequent fire development, and the likely consequences of the fire.
[IEC 60695-4.2012, definition 3.2.10]
3.8
Fire risk firerisk
The possibility of quantifying the measurement with the consequences of the fire.
Note. It is usually evaluated by the product of the probability of occurrence of fire and the consequences of fire.
[ISO 13943.2008, definition 4.124]
3.9
Flame flame
In a gaseous medium, rapid, spontaneous, and subsonic propagating combustion is usually accompanied by luminescence.
[ISO 13943.2008, definition 4.133]
3.10
Flame spread flamespread
The spread of the flame front.
[ISO 13943.2008, definition 4.142]
3.11
Flammability
Under the specified conditions, the material or product is accompanied by the ability to burn flames.
[ISO 13943.2008, definition 4.151]
3.12
Searing (adjective) glowing (adjective)
The solid phase material burns without flame.
3.13
Ignition ignition
(Not recommended) Long-lasting light-off.
< Normal> The beginning of burning.
[ISO 13943.2008, definition 4.187]
3.14
Negligible quality insignificantmass
The quality of combustible materials that are not sufficient to cause a fire hazard.
Note. The default value is generally 2g, but the product standard committee can also specify other suitable values according to the type and size of the product.
[IEC 60695-4.2012, definition 3.2.16]
3.15
Widget smalpart
Parts that are smaller than the minimum size specified in the relevant test method.
[IEC 60695-4.2012, definition 3.2.25]
4 sample
4.1 General
Negative quality finished or finished parts are not required for this test. In addition, this test method does not apply to small parts (see 4.4)
test.
4.2 Complete finished product
The specimen should be a complete finished product rather than a finished part (see 4.3). The choice of sample should consider shape, ventilation, thermal stress
The effects of burning or burning particles, which ultimately drip from the sample, ensure that these test conditions are not significantly different from those in normal use.
4.3 Finished parts (optional)
If the test does not use a complete finished product, the following methods can be selected unless otherwise specified in the relevant product standard.
a) cut a piece from the part of the finished or assembled product that needs to be inspected;
b) opening a small hole in the finished product to allow the glow wire to pass through; or
c) Remove the parts to be inspected from the finished product and conduct separate tests.
The product standardization committee shall specify in which the relevant product standard can be tested. Whenever possible, these product standards should be exhausted
It is possible to reproduce the actual use environment and conditions.
4.4 Test Considerations and Limitations Related to Specimen Shape
During the opening process, if the hole is too small, the test knot may be affected by the light-off of the surrounding object and/or the temperature of the top of the glow wire.
fruit. Therefore, the holes should be large enough to have sufficient air supply for combustion.
During the test, if any part of the equipment containing the sample is ignited by heat other than the glow wire, which affects the heating condition of the sample,
This test is invalid.
The glow flammability test method for finished products should not be used to test small parts. This is because small parts are not effective in avoiding heat loss (see
IEC 60695-2-10) also does not meet the requirements for glow wire penetration.
The following parts are considered widgets.
a) each surface can be covered by a circle of 15mm diameter; or
b) even if there are surfaces of a certain size (length, width, height) greater than 15 mm, these surfaces cannot cover the diameter at the same time.
8mm round.
see picture 1.
When checking a surface.
a) ignore the protruding part of the surface;
b) Ignore any holes or depressions up to 2 mm in size.
Figure 1 widget
5 test device
The test device is described in IEC 60695-2-10.
In order to assess the possibility of flame spread, such as the possibility of flame spread due to burning or burning particles falling from the sample,
The underlay specified in IEC 60695-2-10 is placed under the specimen, or the material or component normally placed around or under the specimen is placed in the test.
Below the sample. The distance between the specimen and the layup representing the surrounding material or component should be equal to the actual distance at the end of use. If a group
If the material and material around the specimen are not known, the packaging paper/woodboard according to IEC 60695-2-10 shall be laid.
The layer was placed.200 mm ± 5 mm below the contact point of the glow wire and the sample.
If the specimen is a complete stand-alone unit, it should be placed in the underlying layer of IEC 60695-2-10 in the normal position of use.
Above, the bottom layer extends at least 100 mm around the bottom of the device.
If the specimen is a complete wall-mounted device, it shall be fixed to the underlay as specified in IEC 60695-2-10 in the normal position of use.
200mm ± 5mm above.
6 Calibration of the temperature measurement system
The calibration method for temperature measurement systems is detailed in IEC 60695-2-10.
7 state adjustment
7.1 Condition adjustment of the sample
Unless otherwise specified in the relevant product standards, the sample shall be placed in an atmosphere of 15 ° C to 35 ° C and a relative humidity of 45% to 75%.
At least 24h.
7.2 Condition adjustment of the bottom layer
If the bottom layer of the packaging/paper is used, the condition adjustment shall be in accordance with IEC 60695-2-10. If it is used
Where materials or components are normally placed around or under the specimen, the material or component shall be subjected to the same conditioning method as the specimen (see 7.1).
7.3 Test conditions
The sample shall be tested in a laboratory environment with a temperature of 15 ° C to 35 ° C and a relative humidity of ≤ 75%. And the test should be in the sample from 7.1
Completed within 30 minutes of removal under the conditions described.
8 test procedure
8.1 General
Except for the general test procedures specified in IEC 60695-2-10, the specimen shall be installed with the top of the glow wire if not otherwise specified.
Applied to the surface portion of the specimen that may be subjected to thermal stress during normal use. If possible, the glow wire should be as level as possible.
When multi-point testing is required on the same specimen, it should be noted that the deterioration caused by the previous test does not affect the results of the subsequent tests.
When there is no detailed specification of the area where the equipment is subjected to thermal stress during normal use, the top of the glow wire should be applied to the thinnest part of the specimen.
Moreover, it is preferably not less than 15 mm from the upper edge of the sample.
During the test, the specimen was fixed to the test device, but no additional mechanical stress should be applied to it.
8.2 Test temperature
The test temperature of the glow wire is specified in the relevant product standard. The test temperature should be selected from Table 1.
Table 1 Test temperature
Test temperature
Tolerance
550 ±10
600 ±10
650 ± 10
700 ±10
750 ±10
800 ± 15
850 ±15
900 ± 15
960 ±15
When selecting the test temperature, the product standard committee should consider the procedure for recommending the glow wire finished test (GWEPT) temperature, as shown in Figure A.1.
Shown.
8.3 Number of samples
Unless otherwise specified in the relevant product standard, the test shall be carried out on one sample.
9 Observation and measurement
During the application of glow wire tA (30s ± 1s) and within 30s afterwards, the specimen, the components around the specimen and the paving below the specimen shall be applied.
The bottom layer is observed and recorded as follows.
a) whether it is light-off; if light-off occurs, from the top of the glow wire to the beginning of the specimen, to the specimen or to the bottom of the specimen below the specimen
The duration of the light-off ti (repaired to 0.5s);
b) from the top of the glow wire to the sample, to the duration of all flames extinguished tE (repaired to 0.5s), the flame may be extinguished
During or after application;
c) whether the burning of the sample is extinguished by removing most of the burning material by removing the hot ribbon;
d) whether the sample is completely burned out;
e) Whether the specified underlay located below the specimen is ignited.
10 Test results evaluation
If the sample satisfies the following conditions at the test temperature T ° C, it is considered to have passed the T ° C glow wire finished test (GWEPT).
a) does not light up; or
b) A light-off has occurred while meeting all of the following.
● If the flame or heat of the sample is extinguished within 30 s after removing the glow wire, ie tE ≤ tA 30s;
● The underlay located below the specimen does not ignite.
11 test report
The test report should include the following.
a) a reference to this section;
b) a description of the sample material, including the type and manufacturer (see Chapter 4);
c) description of the preparation method of the sample (see Chapter 4);
d) condition adjustment of the sample (see Chapter 7);
e) the number of samples to be tested (see 8.3);
f) the test surface and the glow wire application point (see 8.1);
g) the specified layup for assessing the effects of combustion particles and their vertical distance from the top of the glow wire application (see Chapter 5);
h) test temperature (see 8.2);
i) all useful observations and measurements obtained in accordance with Chapter 9;
j) GWEPT measured according to Chapter 10 is reported in the following manner, for example, at 850 ° C.
GWEPT. 850
12 Information to be given in relevant product standards
When referring to this method, the technical committee shall indicate the following.
a) the type and description of the specimen (see Chapter 4);
b) preparation method of the sample (see Chapter 4);
c) all state adjustments of the specimen (see Chapter 7);
d) the number of samples (see 8.3);
e) the point of application and the point of application of the glow wire (see 8.1);
f) the underlying layer used to assess the effects of combustion particles (see Chapter 5);
g) GWEPT (see Chapter 10) and test temperature (see 8.2), for example. “GWEPT at 850 °C according to GB/T 5169.11”;
h) the part or area of the product (s) where the test is performed on the same specimen (see 8.1);
i) whether the specified standards meet safety requirements or whether other standards should be used (see Chapter 9);
j) Whether there is a need to avoid subsequent testing of residual risks and, if necessary, specify test methods and requirements.
Note. See additional indirect test guidelines in IEC 60695-1-11.
Appendix A
(informative appendix)
GWEPT temperature recommendation
Figure A.1 shows the recommended GWEPT temperature.
Description.
I --- rated current;
A --- Ampere;
GWEPT --- Glow wire finished product test.
Note 1. The different fire hazard assessments (FHA) used in the relevant product standards will specify the appropriate GWEPT temperature.
Note 2. The phrase “small energy” and “adjacent” should be defined by the product standard committee. It depends on many factors (for example. the severity of the hazard).
Note 3. Examples of installed equipment include sockets, circuit protection devices, and low voltage electrical devices.
Note 4. The right side of the flow chart (Installation Equipment---No) is intended to represent a restrictive application of GWEPT in the current IEC 60335-1. Other considerations
Please refer to this file.
Figure A.1 GWEPT temperature recommendation
references
[1] IEC 60695-1-10 Firehazardtesting-Part 1-10. Guidance forassessingthefirehazardof
electrotechnicalproducts-Generalguidelines
[2] IEC 60695-1-11 Firehazardtesting-Part 1-11. Guidance forassessingthefirehazardof
electrotechnicalproducts-Firehazardassessment
[3] IEC 60695-2-12 Firehazardtesting-Part 2-12. Glowing/hot-wirebasedtestmethods-
Glow-wireflammabilityindex(GWFI)testmethodformaterials
[4] IEC 60695-2-13 Firehazardtesting-Part 2-13. Glowing/hot-wirebasedtestmethods-
Glow-wireignitiontemperature(GWIT)testmethodformaterials
[5] IEC 60335-1 Householdandsimilarelectricalappliances-Safety-Part 1.Generalrequire-
Mess
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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