1.1本试验方法旨在初步区分材料的耐燃性，因为它们靠近电热丝和其他热源。 2. 1.2本试验方法适用于厚度在0.25至6.4 mm（0.010至0.25 in.）之间的模制或片状材料。 1.3本试验方法适用于在正常室温下具有刚性的材料。也就是说，它适用于试样在制备过程中不会变形的材料，尤其是在中所述的绕丝步骤中 10.1 . 导致本试验方法不适用的变形示例包括: 1.3.1在绕丝步骤中，试样在横向或纵向弯曲，或扭转至肉眼可见的程度。 1.3.2缠绕钢丝在试样中的可见压痕。 1.4以国际单位制表示的数值应视为标准。 括号中的英寸-磅单位仅供参考。（详见SI10。） 1.5本试验方法测量并描述了材料、产品或组件在受控条件下对热量和火焰的响应，但其本身并不包括在实际火灾条件下对材料、产品或组件进行火灾危险或火灾风险评估所需的所有因素。 1.6 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 1.7 防火测试本身就很危险。在进行这些测试时，应采取适当的人员和财产保护措施。 注1 — 尽管本试验方法和IEC 60695-2-20在方法和细节上有所不同，但使用其中任何一种方法获得的数据在技术上是等效的。 ====意义和用途====== 5.1在电气设备（包括电线、电阻器和其他导体）的操作过程中，在某些操作条件下或发生故障时，可能会发生过热。发生这种情况时，可能导致绝缘材料着火。 5.2本试验方法通过热线源的影响评估电绝缘材料的相对点火电阻。 5.3本试验方法确定了材料试样在规定试验条件下点燃所需的平均时间（秒）。 5.4该方法适用于表征材料，受预期精度±15的适当限制 %, 对材料进行分类。 5.5在本程序中，试样经受一组或多组特定的实验室条件。如果替换了不同的试验条件或改变了最终使用条件，则通过本试验或从本试验中预测火灾的变化并不总是可能的- 测量的测试响应特性。因此，结果仅适用于本程序中描述的火灾试验暴露条件。

1.1 This test method is intended to differentiate, in a preliminary fashion, among materials with respect to their resistance to ignition because of their proximity to electrically-heated wires and other heat sources. 2 1.2 This test method applies to molded or sheet materials available in thicknesses ranging from 0.25 to 6.4 mm (0.010 to 0.25 in.). 1.3 This test method applies to materials that are rigid at normal room temperatures. That is, it applies to materials for which the specimen does not deform during preparation, especially during the wire-wrapping step described in 10.1 . Examples of deformation that render this test method inapplicable include: 1.3.1 Bowing, in either a transverse or a longitudinal direction, or twisting of the specimen, during the wire-wrapping step, to a degree visible to the eye. 1.3.2 Visible indentation of the wrapped wire into the specimen. 1.4 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only. (See SI10 for further details.) 1.5 This test method measures and describes the response or materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.7 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. Note 1 — Although this test method and IEC 60695-2-20, differ in approach and in detail, data obtained using either are technically equivalent. ====== Significance And Use ====== 5.1 During operation of electrical equipment, including wires, resistors, and other conductors, it is possible for overheating to occur, under certain conditions of operation, or when malfunctions occur. When this happens, a possible result is ignition of the insulation material. 5.2 This test method assesses the relative resistance of electrical insulating materials to ignition by the effect of hot wire sources. 5.3 This test method determines the average time, in seconds, required for material specimens to ignite under the specified conditions of test. 5.4 This method is suitable to characterize materials, subject to the appropriate limitations of an expected precision of ±15 %, to categorize materials. 5.5 In this procedure the specimens are subjected to one or more specific sets of laboratory conditions. If different test conditions are substituted or the end-use conditions are changed, it is not always possible by or from this test to predict changes in the fire-test-response characteristics measured. Therefore, the results are valid only for the fire test exposure conditions described in this procedure.