1.1 本规范涵盖了用作变压器、电容器和电子组件的绝缘或冷却介质或两者的硅液体。 1.2 本规范涵盖的硅酮液体是标称粘度为50 mm的聚二甲基硅氧烷 2. /在25°C和340°C或更高的燃点下。本规范仅适用于新型硅树脂液体。有关在役维护测试的信息，请参阅相应的指南。 2. 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 silicone liquid for use in transformers, capacitors, and electronic assemblies as an insulating or cooling medium, or both. 1.2 Silicone liquid covered by this specification is polydimethylsiloxane having a nominal viscosity of 50 mm 2 /s at 25°C and a fire point of 340°C or greater. This specification applies only to new silicone liquid. Information on in-service maintenance testing is available in appropriate guides. 2 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.