1.1 本指南描述了用于电缆、变压器、充液断路器和其他电气设备的电绝缘液体的测试方法和规范，其中液体用作绝缘介质或传热介质，或两者兼有。 1.2 本指南旨在概述可用测试方法的适用性。如果有多个可用于测量给定特性，则描述了它们的相对优势，以及实验室便利性、精度（95）的指示 % 置信限），以及对特定类型电绝缘液体的适用性。 1.3 本指南分为以下几类:抽样实践、物理测试、电气测试、化学测试和规范。 在每个测试类别中，测试方法按测量的性能按字母顺序列出。标准清单如下: 类别 部分 ASTM标准 采样: 3. D923 物理测试: 苯胺点 4. D611 热膨胀系数- 潘森 5. D1903 颜色 6. D1500 检查:视觉红外 7. D1524 , D2144 , D2129 闪点和燃点 8. D92 界面张力 9 D971 石油倾点 产品 10 D97 , D5949 , D5950 矿物中的颗粒数 绝缘油 11 D6786 折射率和比 光学色散 12 D1218 相对密度（比 重力） 13 D287 , D1217 , D1298号 , D1481 , D4052号 比热 14 D2766 导热系数 15 D2717 粘度 16 D445 , D2161 , D7042 电气测试: 介质击穿电压 17 D877 , D1816 , D3300 耗散因子和相对损耗- 介电常数（电介质 常数） 18 D924 放气特性 在热应力下 19 D7150 放气倾向 20 D2300 电阻率 21 D1169 化学测试: 酸度，近似值 22 D1534 碳型成分 23 D2140 与施工的兼容性- 离子材料 24 D3455 铜含量 25 D3635 感应式元件 耦合等离子体（ICP-AES） 26 D7151 呋喃化合物 电绝缘液体 27 D5837 溶解气体分析 28 D3612 电缆和电缆的气体含量 电容器液体 29 D831 , D1827 , D2945 中和（酸和 基数）数字 30 D664页 , D974 抗氧化剂含量 31 D2668 , D4768 氧化稳定性 32 D1934 , D2112 , D2440 多氯联苯 内容（PCB） 33 D4059号 硫，腐蚀性 34 D1275 含水量 35 D1533 规范: 矿物绝缘液 电气设备 36 D3487 易燃性较低的电气设备 绝缘液体 37 D5222 电气用硅油 隔热 38 D4652 天然（植物油）酯 电气设备中使用的液体 仪器 39 D6871 1.4 以国际单位制表示的数值应视为标准值。括号中的数值仅供参考。 1.5 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。 1.6 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 guide describes methods of testing and specifications for electrical insulating liquids intended for use in electrical cables, transformers, liquid-filled circuit breakers, and other electrical apparatus where the liquids are used as insulating, or heat transfer media, or both. 1.2 The purpose of this guide is to outline the applicability of the available test methods. Where more than one is available for measuring a given property, their relative advantages are described, along with an indication of laboratory convenience, precision, (95 % confidence limits), and applicability to specific types of electrical insulating liquids. 1.3 This guide is classified into the following categories: Sampling Practices, Physical Tests, Electrical Tests, Chemical Tests, and Specifications. Within each test category, the test methods are listed alphabetically by property measured. A list of standards follows: Category Section ASTM Standard Sampling: 3 D923 Physical Tests: Aniline Point 4 D611 Coefficient of Thermal Ex- pansion 5 D1903 Color 6 D1500 Examination: Visual Infrared 7 D1524 , D2144 , D2129 Flash and Fire Point 8 D92 Interfacial Tension 9 D971 Pour Point of Petroleum Products 10 D97 , D5949 , D5950 Particle Count in Mineral Insulating Oil 11 D6786 Refractive Index and Specific Optical Dispersion 12 D1218 Relative Density (Specific Gravity) 13 D287 , D1217 , D1298 , D1481 , D4052 Specific Heat 14 D2766 Thermal Conductivity 15 D2717 Viscosity 16 D445 , D2161 , D7042 Electrical Tests: Dielectric Breakdown Voltage 17 D877 , D1816 , D3300 Dissipation Factor and Rela- tive Permittivity (Dielectric Constant) 18 D924 Gassing Characteristic Under Thermal Stress 19 D7150 Gassing Tendency 20 D2300 Resistivity 21 D1169 Chemical Tests: Acidity, Approximate 22 D1534 Carbon-Type Composition 23 D2140 Compatibility with Construc- tion Material 24 D3455 Copper Content 25 D3635 Elements by Inductively Coupled Plasma (ICP-AES) 26 D7151 Furanic Compounds in Electrical Insulating Liquids 27 D5837 Dissolved Gas Analysis 28 D3612 Gas Content of Cable and Capacitor Liquids 29 D831 , D1827 , D2945 Neutralization (Acid and Base) Numbers 30 D664 , D974 Oxidation Inhibitor Content 31 D2668 , D4768 Oxidation Stability 32 D1934 , D2112 , D2440 Polychlorinated Biphenyl Content (PCB) 33 D4059 Sulfur, Corrosive 34 D1275 Water Content 35 D1533 Specification: Mineral Insulating Liquid for Electrical Apparatus 36 D3487 Less Flammable Electrical Insulating Liquids 37 D5222 Silicone Fluid used for Electrical Insulation 38 D4652 Natural (Vegetable Oil) Ester Fluids used in Electrical Apparatus 39 D6871 1.4 The values stated in SI units are to be regarded as standard. The values stated in parentheses are provided for information only. 1.5 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. 1.6 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.