1.1 本性能规范确定了用于制造电气工人防护服的纺织品和组件的最低阻燃性、结构、耐久性和标签要求，以防止暴露于瞬时电弧闪光和相关热危害。 1.1.1 本性能规范不涉及电弧危险环境中常用于雨衣应用的涂层或层压织物。 1.2 本性能规范定义了最低服装制造和标签要求，允许用户选择具有适当电弧额定值的服装，以保护其免受确定的电弧闪光危险环境的影响。 1.2.1 为了选择合适的防护服，需要事先确定电弧闪光危险环境。该事先确定不在本规范范围内。 1.2.2 电弧闪光防护服的护理和维护要求不在本标准范围内。 1.3 本标准应用于评估和描述受控实验室条件下材料、产品或组件对热和火焰的响应特性。 它不应用于描述或评估实际火灾条件下材料、产品或组件的火灾危险或火灾风险。 1.3.1 该评估结果可作为火灾风险评估的要素，该评估考虑了与特定最终用途火灾危险评估相关的所有因素。 1.4 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.5 以下预防性警告仅适用于试验方法部分第节 7. ，本性能规范: 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。

1.1 This performance specification identifies minimum flame resistance, construction, durability, and labeling requirements of textiles and subassemblies used in the manufacture of protective clothing worn by electrical workers to protect against exposure to momentary electric arc flash and related thermal hazards. 1.1.1 This performance specification does not address coated or laminated fabrics commonly used for rainwear applications in an arc hazard environment. 1.2 This performance specification defines minimum garment manufacturing and labeling requirements to allow users to select garments with appropriate electric arc ratings for protection from their determined electric arc flash hazard environment. 1.2.1 A prior determination of the electric arc flash hazard environment is required in order to select appropriate protective garments. This prior determination is outside the scope of this specification. 1.2.2 The care and maintenance requirements for electric arc flash protective garments are outside the scope of this standard. 1.3 This standard should be used to evaluate and describe the properties of materials, products, or assemblies in response to heat and flame under controlled laboratory conditions. It should not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. 1.3.1 The results of this evaluation may be used as elements of a fire-risk assessment that takes into account all of the factors that are pertinent to an assessment of the fire hazard of a particular end use. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.5 The following precautionary caveat pertains only to the test methods portion, Section 7 , of this performance specification: 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.