1.1 这些测试方法包括筛选电气设备中使用的建筑材料与硅流体的兼容性。 1.2 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。 1.3 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、健康和环境实践，并确定监管限制的适用性。 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====== 3.1 硅酮流体电性能的变化幅度对于确定试样对流体的污染至关重要。 3.2 流体中的物理和化学变化，如颜色和酸度，也表明试样对流体的溶解度或其他不利影响。 3.3 试样的物理变化，如硬度、膨胀和变色，显示了流体对试样的影响，并用于确定材料在硅酮流体中的适用性。 3.4 符合推荐标准的材料不一定表示适用于电气设备。 还必须考虑其他特性。此外，某些含有添加剂的材料可能满足这些试验方法的要求，但在进行长期评估时仍不符合要求。 3.5 这些试验方法可作为测试硅流体（50 cSt聚二甲基硅氧烷流体除外）材料兼容性的指南，但可能需要不同的判断标准。

1.1 These test methods cover screening for the compatibility of construction materials with silicone fluid for use in electrical equipment. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 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 ====== 3.1 The magnitude of the changes in the electrical properties of the silicone fluid is of importance in determining the contamination of the fluid by the test specimen. 3.2 Physical and chemical changes in the fluid, such as color and acidity, also indicate solubility or other adverse effects of the test specimen on the fluid. 3.3 Physical changes of the test specimen, such as hardness, swelling, and discoloration, show the effect of the fluid on the test specimen and are used to determine the suitability of the material for use in silicone fluid. 3.4 A material meeting the criteria recommended does not necessarily indicate suitability for use in electrical equipment. Other properties must also be considered. Additionally, certain materials containing additives may meet the requirements of these test methods yet be unsatisfactory when subjected to longer-term evaluations. 3.5 These test methods may be used as a guide for testing the compatibility of materials for silicone fluids other than 50 cSt poly-dimethyl siloxane fluid, but different criteria for judgment may be necessary.