GB/T 5169.17-2002 Fire hazard tests for electrical and electronic products Part 17: 500W flame test method
Some standard content:
ICS29.020
National Standard of the People's Republic of China
B/1 5169.17—2002/1EC 60695-11-20:1999 replaces GB/T1102·1S5
Fire hazard testing for electrie and electronic products --Part 1:500 W flame test methods(IEC 60695-11-20:1999 Fire hazard testingPart ll.20:Test flames-500 W flame test methds,IpT)2002 - 10-08 Issued by
People's Republic of China
General Administration of Quality Supervision, Inspection and Quarantine
2003·04-01 Implementation
Specification document
Technical background and definition
Test document
Test sample
Test acceptance method
Website A (informative requirement) Test force method precision reference document
Diagram Formed sample multiplication vertical combustion test
Horizontal combustion test of plate test sample
Blowtorch installation inclined pad||tt| |Figure 1 Test sample
Table 1 Combustion category
Table A.1 Precision data of fire start time, residual burning time, CB/T5169.17—2002/1EC60695-11-20:1999
Table A.2 Precision data of fire start time, residual burning time, and/or afterglow time, GA/T5169.17—2002/TEC606951120:1999 Foreword
CB/T516 Fire hazard test for electrical and electronic products> The parts that have been issued and implemented recently are: G/T S169.1-1997
Fire hazard tests for electric and electronic products Part 4: Fire test procedures 2 Core 1 also includes product fire hazard tests
GB7T 5169.2-2002
GB/T 5169.3—1985
GB/T 51G9. -1997
Fire hazard test for electric and electronic products
Guidelines for the formulation
Fire hazard test for electric and electronic products
GB/T5169.6-1985
Fire hazard test for electric and electronic products
Part 2: Guidelines for fire hazard assessment General principles
Technical requirements and test specifications for fire hazard assessment of electronic components Part 2: Test methods Part 2: Flame test Test method for poor connection of heaters
GB/T5169.7—2001
Fire hazard test for electric and electronic products
Test method Diffusion type and premixed type fire test method GH/T 5169.8-1185
Review on fire hazard test and test methods for electronic products
Evaluation test procedures and test results interpretation GB/T51S9.91993T. Fire hazard test for electronic products-Technical requirements for fire hazard assessment-Guidelines for the formulation of test specifications-Pre-selection procedures-Test methods
GE5/T5139.1199? 1 Fire hazard test for electrical products General test methods GB/T 5159.11—1987 Fire hazard test for electric and electronic products Test methods Test and guidance for finished products CBT5169.12—199S Fire hazard test for electric and electronic products Test methods for materials Hot wire ignition resistance test GB/T 5159.13—1995 Fire hazard test for electric and electronic products Test methods Glow-wire ignition resistance test for materials GR/T i119.14—2001
Fire hazard test of good engineering electronic products
CB/Z5169.15—20C1 Fire hazard test of electrical and electronic products 1W standard test fire test method 500W standard test flame and test method R/T516916--2012 General fire hazard test for electrical and electronic products Part 1e 5W water single and heavy vertical fire screening test method GB/T5119.17—2002 Fire hazard test for electrical and electronic products Part 17: 51;W flame test method GK/15169.17 GB/T515 3 Part 17 of the fire hazard test standard for electrical and electronic products This part is equivalent to 1EC6065-11-20, 1999% book Fire hazard test Part 11-20: Test fire 500W flame test method (English version), old version G/T20.2-20) 1 standard non-chemical 1 guide Part 2, adopts the provisions of 4.2b) and 5.2 of the international standard for minor or systematic modification. This part replaces GB/T110201S89: Test method for determining the specific energy of combustion of electrical pipe materials after exposure to ignition source E. Appendix 4 of this part is informative. This part is proposed by the China Electrical Equipment Industry Association: This part is drafted by the National Electric Industry Association. This part was drafted by Huang from the Shanxi Electric Science Research Institute. The main contributors to this part are Xie Bianhua and Chen Ling. 1
GB/T5169.17—2002/IEC6069511-20:1995 Introduction
When considering using this test method, it is important to distinguish between "finished product test" and "pre-test". Finished product test is a fire hazard assessment test on a complete product, component, element or assembly; pre-test is a test on the burning characteristics of materials (parts, components or assemblies). Pre-test of materials usually uses standard shape test samples, such as rectangular test samples or long shaped test panels. Standard production methods are required:
It is emphasized that the data of the flow test given in this part should be carefully considered to ensure suitability for the intended application and to avoid errors and misunderstandings. The actual ignition performance of a part or a product is affected by its use environment, design parameters, shape and size, manufacturing process, heat transfer effect, type of non-combustible source and its contact time. It should be remembered that these properties may also be affected by the foreseen use, incorrect use and environmental exposure. The advantages of the pre-selection method are as follows:
a) When making standard specimens for testing, the materials with good reaction properties will have better reaction properties when they are made into product parts, but the synergistic effect that may occur should be avoided.
b) The data related to the combustion characteristics can be used to select particles, components and assemblies in the design stage. <) Compared with the test of the production or product, the accuracy of the pre-selection test is generally higher and the microscopic accuracy can also be accounted for. Pre-selection tests can be used in place of the current "dust" method to reduce the fire hazard to a minimum: when the fire hazard assessment is applied, the number of finished product tests can be reduced, thereby reducing the total test work. When the fire hazard requirements need to be increased, this requirement can be achieved by first considering the requirements of the fire test and then improving the finished product testing method. The classification and grading obtained from the pre-selection test station can be used to specify the minimum basic performance of the materials used in the product specification. It should be noted that when pre-selection tests are used to replace certain product or finished product tests, safety factors should be increased and efforts should be made to ensure that the finished product has satisfactory performance. Product testing can prevent the pre-selection method from limiting innovation and limiting the selection of more economical materials. Therefore, after the pre-selection test, it is necessary to conduct a value analysis of the finished product: no performance requirements are made on the product except for the absolutely necessary performance, GR/T5 16S.2 points out that electrical products are subject to fire hazards such as electrical parts storage. For such hazards, the design of the circuit components and the selection of materials should be based on the possibility of fire when foreseeable abnormal use, friction or failure has occurred. In practice, the fire should be prevented from igniting. In the event of ignition or fire of parts, the fire should be controlled, preferably within the circuit or outside the product.
The most reliable method to inspect electrical products for fire hazards is to accurately reproduce the conditions of actual fire.But in most cases this is impossible. In the end, the best way to approximate the actual effect is to follow the actual reasons. BT516S, 9 is mature, and it is expected that the test can be carried out in the specified test using the necessary fire resistance specifications and relevant combustion characteristics. This standard also briefly describes the relationship between the material performance and the product function, and explains the significance and limitations of this selection method.
1K1840 summarizes the special issues related to the fire test of plastics: it can be used to help when evaluating and interpreting the test results.
1 Scope
GB/T5169.17-2002/1EC:60695-11-20:1999 Differential fire hazard test for electrical and electronic products
Part: 500 load flame test method
The wood part of GB/T5169 specifies the small test room screening method for the relative combustion characteristics and burn-through resistance of plastic and other non-metallic material samples. The ignition source of the comparative test is a flame fusion source with a nominal power of 5W. This method is applicable to solid materials and foamed plastics with an apparent density of 10 or more kg/m\ (determined by the method specified in ISO845). For thin materials that do not shrink but do not expand when exposed to fire, [S)73 should be used. This test method is used to describe material properties, such as for quality control purposes, but is not suitable for evaluating the fire resistance of building materials and building appliances. This test method can be used to obtain clear results with dry materials, but the thickness of the material during the test must be equal to the actual application thickness. Although these results provide certain characteristics of the plastic used, they cannot alone guarantee safety during use. In the past, the test results had an impact on the material classification and material properties, such as the direction of anisotropy and molecular diameter, by removing colorants, fillers and flammable agents. The material classification specified in this test method (see 8.3.7) can be used for product quality assurance or pre-selection of materials for product components. 2 Normative references || tt || The clauses in the following documents become clauses of this standard through reference in this part of GB/T 1. For any dated referenced document, its subsequent amendment (excluding errata) or revision is not applicable to this part. However, parties that have reached an agreement based on this part are encouraged to study whether the latest version of this document can be used as soon as possible. For any undated referenced document, its latest version shall apply to this part, GB/T 5169.5-1997.1 Fire hazard test of electrical products Part 2: Test methods Part 2 Needle flame test (i) TFC:606S5-2-2:1$911
GB/T 5169.16-2002 Electrical and Electronic Engineering Product fire hazard test Part 16: 50W horizontal and vertical flame test code (60655-11101990)
ES0291: 1997 Standard atmosphere for pretreatment and testing of plastics TS () 293: 196 Plastics thermoplastics test specimens Compression molding 15 Core 294 (relevant parts) Plastics thermoplastics test specimens Injection molding 1529, 19!1 Cover material thermosetting plastic post-test specimen compression molding S45;1 Determination of the surface quality of foam plastics and foam explosion rubber IS0/IFC. Guide 51: 1990 Standard safety Internal Guide TECTS50695-11-3:2000 Fire hazard testing Part 13: Test flame 51W flame test method and verification method
C Guide 114:1997 Safety standards and basic safety publications and use of safety publications 3 Terms and definitions
The following terms and definitions apply to other parts of GB/51. 3.1
Residual flame
The state in which a flame remains after the ignition source is removed under specified test conditions. GB/I 5169.172002/IEC60695-11-20:19993.2
Afterflame timefzfterflametimetThe period of time during which the afterflame remains.
Afterburn
The state of the material continuing to burn after the flame has ceased under the specified test conditions (if there is no flame, after the ignition source has been removed). 3.4
Afterburn timet,antergtowlinet
The period of time during which the afterburn remains.
Burning time thruog
The test fire generates a hole in the test sample. 4 Principlewww.bzxz.net
This method requires the use of two test samples of different shapes to characterize the properties of the material. The rectangular test sample (see 8.2) is used to evaluate the material's maximum ignition temperature and burning time, and the rectangular test sample (see 8.3) is used to evaluate the material's ability to withstand stress. 5 Significance of the test
5.1 The test of material samples under specified conditions is of great value in comparing the relative burning resistance of different materials, controlling production processes or evaluating changes in plate burning characteristics. The test results obtained by this test method are related to the shape of the test sample, the arrangement of the test sample and the ambient pressure environment, and are related to the combustion conditions.
Note: The results obtained by this test method are different from those obtained by the water combustion (HB) test and the direct burning (VB) test specified in K/T5165.16. 5.2 The results obtained in this section should not be used alone to describe the fire hazard presented by a specific material or shape under actual fire conditions: The fire hazard assessment requires consideration of such factors as the composition of the fuel, the degree of combustion (heat release), the combustion products and various environmental factors including the intensity of the combustion source, the orientation of the exposed material and ventilation conditions: 5.3 The combustion characteristics determined by this test method are affected by factors such as the density of the material, its non-combustibility and the thickness of the test specimen. 5.4 Some materials may evade fire or deform during fire and not burn. In this case, additional test specimens are required to obtain valid test results:
5-5 The properties of some plastics may change with time; therefore, a reasonable approach is to carry out several tests before and after aging using an appropriate method. The preferred aging treatment method is to test in an oven at 70°C for 2 days. Other aging times and aging degrees may also be determined according to the opinions of the parties concerned, but they should be noted in the test report. 6 Test device
The test device shall consist of the following test parts. 6.1 The test chamber should have a minimum internal temperature of (.75 rms). The test chamber should be airtight. There should be no forced air system. However, during the combustion period, normal heat circulation of the test sample should be allowed to pass over the test sample. The inner surface of the chamber should be color-resistant. When a light meter is placed in the position of the test sample and the light receiving part of the receiver is toward the rear of the chamber, the pressure displayed on the instrument should be less than 0. For safety reasons, this test chamber (which can be completely closed) needs to be equipped with a self-exhausting device such as an exhaust fan to remove the potentially toxic combustion products. The exhaust device should be closed during the test and should be able to remove the combustion products immediately after the test. It may be necessary to close the damper. Note: It is generally believed that the fire behind the test sample is useful in the test chamber. 6-2 Laboratory Blowtorch CB/T 5169.17—2002/IEC60695-11-20:1999 Laboratory blowtorches shall comply with the requirements of flame A, B, C or I in IEC/TS60695-113. The flame limit of 10903 is specified as P/PF2 and P/PF (500W) lamps. 6.3 Ring stand
The rack shall have a fixture or similar device that can be used to position the sample. 6.4 Timing device
The timing device group seat shall be at least 0.5%. 6. 5 Measuring ruler
The scale of the product ruler should be in mn. 6.6 Pretreatment box
The temperature of the pretreatment chamber should be able to be maintained at 23 (2. The relative humidity supply group should be maintained at 50% ± 5%. 6. The resolution of the micrometer
should be at least U.0m
6.8 The drying box should be filled with anhydrous calcium chloride or its drying agent. 6.9 Air ring drying oven
The air ring drying oven should be able to dry the oven to 2000 ℃, unless otherwise specified in the relevant specifications, and the air should be changed no less than 100% per hour. 6.10 Cotton pads should be made of 100% defatted cotton (see Figure 1), and the cotton wool should be flat. 6.11 Lamp installation inclined plate The blowtorch installation inclined plate or tool should be installed with a blowtorch so that the angle between the vertical axis and the vertical axis is 20° ± 2\ (see Figure 3). 7 Test samples 7.1 The test samples should be cut from representative molded parts of the product; if this cannot be done, they should be made using the same process as the parts of the finished product. If this is still not possible.The necessary shape shall be manufactured by appropriate methods of S(>, such as the molding method and proof molding method of IS(24), compression molding or transfer molding of IS(293 or [SA295]. If it is not possible to prepare the test sample by any of the above methods, the type test shall be carried out by the needle test of GB/5169.5:
After the scratching is completed, the cut shall be carefully polished with fine paper to eliminate local dust and particles from the surface of the sample. 7.2 The size of the strip test sample shall be layer length (125mm=5mm). Width (13mm+0.5mm), the thickness shall be the commonly used minimum thickness and shall not be greater than 13mm. The half angle shall not be greater than 1.mm. In addition, other thicknesses may be used based on the consensus of the parties concerned. If so, it shall be reported in the domain report. Note (see Figure 4). 7.3 The size of the test sample should be (15Dmm5mm)×(150mm=5mm), the thickness should be the minimum required thickness for the passband, and should not be greater than 13mm. The thickness can be used according to the consensus of the relevant parties. Otherwise, it should be noted in the test report (see Figure 4).
7.4 The test results obtained by using different thicknesses, different densities, different distributions, different inhomogeneities, and different types of test samples, that is, test samples with different additives, different fillers, and different enhancers may be different. 7.5 At least 24 strip test samples and 12 test pieces should be prepared. If the situation mentioned in 5.4 or 2.5 is encountered, at least one supplementary whole sample should be used. 3
GB/T 5169.17—2002/[EC 60695-11-20:19998 Test Methods
8.1 Preconditioning
Unless otherwise specified in the relevant specification, the following requirements shall apply. 8.1.1 Five strip test pieces and three plate test pieces shall be aged for at least 48 h at 23°C and RH = 5%. Once the test pieces have been removed from the preconditioning chamber (see 6.5), they shall be tested within 1 h (see 1S0291).
81.2 Each of the five strip test pieces and the three plate test pieces shall be aged for 168 h in a circulating air oven (see 5.9) at a temperature of 70°C ± 2°C. Then, they shall be aged in a drying oven (see 6. 8) Cool for at least 4 h: Once the test sample is removed from the test cabinet, it should be tested within 30 min (see ISO 29).
81.3 All test samples should be tested in a laboratory atmosphere with an air temperature of 15℃ to 35℃ and a relative humidity of 45% to 75%.
82 Test strip test samples
82. Use a ring support (see 6.3) to support the longitudinal axis of the test sample. The strip test sample is 6m above the upper part of the test sample and its lower end is horizontally retracted (see 6.10). The 300mm ± 10mm structure is approximately 50mm × 50mm. The thickness of the bottom is approximately 6mm and the maximum mass is 0.08g (see Figure 1). 8.2.2 Place the blowtorch away from the sample in the test chamber, with the center line of the lamp vertical, and then make the lamp (see Figure 2) produce a pulsed standard flame of 300W in accordance with the flame AB, C to D in IEC60695-11-3, and wait for at least 10 minutes until the blowtorch reaches a stable state. Then fix the blowtorch on the installation inclined pad (see 6.11). Make the axis of the lamp tube form an angle of 20*5 with the vertical half plane (Figure 1). If there is a competitive instrument, use type A flame as the reference test flame.
8.2.3 Make the edge of the shaped test sample face the blowtorch, and make the blowtorch flame at 2 + 5° to the vertical plane. Apply it to the front lower corner of the test sample so that the top of the blue rectangular core can touch the strip test (see Figure 1). Apply flame 310.55, then flame 50.5 and repeat this process until the strip test sample is punctured 5 times to form a test flame network. If the strip test sample drips more during the test period and the curling becomes elongated, adjust the position of the blowtorch so that the top of the blue rectangular core can touch the remaining part of the strip test instead of melting the cast effect of the molten material. After each application of the flame, the blowtorch should be removed immediately to ensure that it has no effect on the sample. 1. You must use any blowtorch and material block 4 to do this. 2. After each machine fire starts, bring the blowtorch 150mm above the sample to meet this requirement. B.2.4 After the fifth application of flame to the strip test sample, immediately move the blowtorch away from the test sample so that there is no impact on the sample. At the same time, use the timing device (see 6.4) to start measuring and record the afterflame time and afterburning time! . and t:, accurate to seconds, and also record whether there are burning particles from the upper and lower parts of the strip test sample. If there are burning particles, record whether they ignite the cotton pad (see 610)
Note: If the remaining time is not measured, the remaining time between the test (ten) is not determined again. This is used in recording multiple teaching methods.
Note 2: During the measurement period, the light from the strip test sample is 160.: It is considered that the adjustment is sufficient. 8-2.5 This procedure directly judges that all 5 system test samples in accordance with 8.1.1 and 8.1.2 have been tested. 8.2.6 If only one of the test specimens of the initial normalized five-piece pictographic test specimen or two-piece plate test specimen does not meet all the international standards for the same type, test the other set of five-piece polymorphic test specimens that have undergone the same treatment in a group of three test specimens. All of the second set of test specimens shall meet all the specifications specified for this type of material. 8.3 Test Procedure...Frame Test Specimens
8.3.1 Using the tool on the ring stand (see 6.3), support the test specimen in a horizontal position (see Figure 2). 83.2 Hold the blowtorch in the same manner as described in 8.2.2.
|3.3 Apply the flame of the wide lamp to the center of the bottom surface of the plate test specimen: the blowtorch should be 20\ + 5° from the vertical so that the top of the flame can easily touch the surface of the specimen.
GB/T 5169.1/-2002/IEC 60695-11-20,19998.3.4 After applying the flame for 10.5s, alternately open the flame for 5-10.5s: Repeat this operation to make the test sample ignite the test flame 5 times. After each application of the flame, immediately separate the flame from the test sample completely to prevent the sample from being affected. Note: It may be necessary to use the safety lamp and the installation to achieve this purpose. Note 2: After the first application of the flame, make the lamp 150 catties higher than the test sample. 8.3.5 After the fifth application of the flame, immediately separate the lamp from the sample to prevent it from affecting the test sample. Observe and record whether the flame burns the sample. ||tt ||Note: It is considered that the step lamp is in compliance with the requirements of the test sample by opening 1mm. 8.3.6 Repeat this procedure until all three samples treated according to 8.1.1 and all three samples treated according to 8.1.2 are tested. 8.3.7 Classification and grading
According to the performance of the strip test specimens and the plate test rods, the test materials should be divided into 5V4 and 5VH categories (5 vertical burning) according to the indicators given in Table 1. For the factory to evaluate the burning to the selected category, the materials classified as 5VA or 5VB still meet the indicators of VU, V1 or V2 materials described in CB/T 616!.17. 5 Combustion category
For each individual test product, after the flame is increased for the first time, the residual flame time of each test product is the burning time, that is, the residual flame time of each test product.
The test material is granular or liquid. 5.11> The test sample has no complete development of
The fire condition is sufficient to burn through the total number of products in the sample. Note: If the test results do not meet the specified indicators, the material cannot be classified by another test method. 8.4 Test report
The test report should include the following parts:
a part of GB/16S;
Necessary information on the tested product, such as the name of the manufacturer, production number or agent and product color: the thickness of the test sample, the exact specifications C.1 mmr
d) nominal surface density (only applicable to frozen plastics), e
direction of anisotropy related to the size of the test sample, pretreatment;
treatment before testing, excluding cutting, roughening and tapering; the afterburning time of each strip test sample after the first application of fire, the afterburning time and (j) the record of the amount of pre-granular material on the relevant strip test sample and whether it has ignited; the record of whether the relevant strip test sample has been burned through; determine what type (see 8.3.7)
GB/T5169.17—2002/IEC60695-11-20:1999 Horizontal
Hengyang Dangerous Goods
300=10
Test Standard Products
Environmental "Anhui block
Vertical combustion test of strip specimens
Type vertical room
Except for the horizontal combustion test of plate-shaped test specimens in Figure 2, the unit is mm
Select product thickness.
Standard product thickness.
GB/T5169.17—2002/1EC 606951120:1999Unit is year
Light adjustment center
National 3 lamp installation material pad-
136±6
n strip test sample
b shape test sample
Figure 4 test sample
Unit is semi
GB/T5169.17—2002/1EC606951120:1999 Appendix A
(Appendix: Precision of the test method Experimental test A set of box density data was determined based on an actual test conducted in 2018. The test involved 10 laboratories, 6 materials, and 3 identical test samples. The data for each material was the average of 3 numerical points. All tests were conducted with samples of appropriate thickness of ?m. The test results were analyzed and summarized in accordance with I5)5725-2. The data are summarized in Table A.1 and Table A.2. A.1 Precision data of residual flame time after the fifth application of fire
Reproducibility
PBE (1)
Note: For the meaning of the symbols, see ISO [045-1FE2
Precision data of residual flame time t after the fifth application of fire, and/or residual burning time t 2A.2
Reproducibility
Note: For the symbol, see ISO 1043-1. PBT (2) || tt || single busy is second || tt || unit is second || tt || Note: A-2 and A-3 are only used to estimate the goodness of this test method. Strictly speaking, the method of improving the sterility of the materials received must be based on the period of acceptance. These teaching instruments must be used for the cumulative test of the laboratory, and cannot represent the batches, parts, thickness, and other materials in the laboratory.
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