1.1本试验方法包括测定石油来源的电绝缘液体和askarels的热膨胀系数，用于电缆、变压器、油断路器、电容器和类似设备作为绝缘或冷却介质，或同时用于电缆、变压器、油断路器、电容器或类似设备。 1.2以可接受的公制单位给出的值应视为标准。 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。 ====意义和用途====== 了解液体的热膨胀系数对于计算容器的所需尺寸至关重要，以在其将承受的整个温度范围内容纳液体体积。它还用于计算在液体冷却到较低温度后填充液体的非弹性装置中存在的空隙体积。

1.1 This test method covers the determination of the coefficient of thermal expansion of electrical insulating liquids of petroleum origin, and askarels, for use in cables, transformers, oil circuit breakers, capacitors, and similar apparatus as an insulating or cooling medium, or both, in cables, transformers, oil circuit breakers, capacitors, or similar apparatus. 1.2 The values given in acceptable metric units are to be regarded as the 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== Knowledge of the coefficient of thermal expansion of a liquid is essential to compute the required size of a container to accommodate a volume of liquid over the full temperature range to which it will be subjected. It is also used to compute the volume of void space that would exist in an inelastic device filled with the liquid after the liquid has cooled to a lower temperature.