1.1 本规范涵盖了2至35 kV电线和电缆的热塑性护套化合物，其厚度至少为0.030英寸。（0.76 mm）标称厚度，主要由着色聚乙烯组成。 1.2 在许多情况下，除非护套材料在导体或电缆周围形成，否则无法对其进行测试。因此，本规范中对护套导线和电缆进行的测试仅用于确定护套材料的相关特性，而不是测试护套导线或完整电缆。 1.3 每当以不同单位呈现两组值时，第一组中的值为标准值，而括号中的值仅供参考。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers a thermoplastic jacketing compound for 2 to 35 kV wire and cable, of at least 0.030 in. (0.76 mm) nominal thickness, consisting substantially of pigmented polyethylene. 1.2 In many instances the jacket material cannot be tested unless it has been formed around a conductor or cable. Therefore, tests done on jacketed wire and cable in this specification are solely to determine the relevant property of the jacket material and not to test the jacketed conductor or completed cable. 1.3 Whenever two sets of values are presented, in different units, the values in the first set are the standard, while those in parentheses are for information only. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.