1.1 本规范涵盖电线电缆用交联和热塑性挤压半导体、导体和绝缘屏蔽材料。 1.2 在许多情况下，屏蔽材料的电气性能在很大程度上取决于加工条件。因此，在本规范中，材料取自电缆。因此，本标准中对屏蔽线进行的测试仅用于确定屏蔽材料的相关性能，而不是测试导体或完整电缆。 1.3 以国际单位制表示的数值应视为标准值。 本标准不包括其他计量单位。 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 crosslinked and thermoplastic extruded semi-conducting, conductor, and insulation shielding materials for electrical wires and cables. 1.2 In many instances, the electrical properties of the shielding material are strongly dependent on processing conditions. For this reason, in this specification the material is sampled from cable. Therefore, tests are done on shielded wire in this standard solely to determine the relevant property of the shielding material and not to test the conductor or completed cable. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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.