1.1本目视检查试验方法适用于已在变压器、油断路器或其他电气设备中用作绝缘或冷却介质或两者中使用的石油来源矿物油。 1.2以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 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====== 通过使用该测试方法，可以在现场检查期间估计油试样的颜色和状态，从而有助于决定是否应将样品送至中央实验室进行全面评估。可能检测到混浊、绝缘颗粒、金属腐蚀产物或其他不需要的悬浮物，以及任何异常的颜色变化。为了在实验室中精确测定颜色，试验方法 应使用。

1.1 This test method for visual examination is applicable to mineral oils of petroleum origin that have been used in transformers, oil circuit breakers, or other electrical apparatus as insulating or cooling media, or both. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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 ====== By use of this test method the color and condition of a test specimen of oil may be estimated during a field inspection, thus assisting in the decision as to whether or not the sample should be sent to a central laboratory for full evaluation. Cloudiness, particles of insulation, products of metal corrosion, or other undesirable suspended materials, as well as any unusual change in color may be detected. For precise determination of color in the laboratory, Test Method should be used.