1.1 本试验方法包括测定涂有绝缘清漆的矩形和方形纤维缠绕或薄膜包裹磁铁线的耐热性。 1.2 以国际单位制给出的数值是标准值。括号中给出的值仅供参考。 1.3 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。 第节给出了具体的预防说明 5. . 注1: 没有类似或等效的IEC标准。 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。 ====意义和用途====== 4.1 当暴露在高温下时，将单个清漆涂覆到相同的纤维或薄膜包裹的磁铁线上时，其表现不同。同样，清漆在应用于不同类型的纤维或薄膜包裹的磁铁导线以及暴露于高温时，表现并不总是相同的。 图1 金属丝成型夹具

1.1 This test method covers the determination of thermal endurance of rectangular and square fibrous- or film-wrapped magnet wire coated with an insulating varnish. 1.2 The values given in SI units are the standard. The values given in parentheses are for information only. 1.3 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. A specific precautionary statement is given in Section 5 . Note 1: There is no similar or equivalent IEC 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. ====== Significance And Use ====== 4.1 Individual varnishes behave differently when applied to the same fibrous- or film-wrapped magnet wire when exposed to elevated temperatures. Likewise, a varnish does not always behave the same when applied to different types of fibrous or film-wrapped magnet wires and when exposed to elevated temperatures. FIG. 1 Jig for Forming Wire