1.1 本指南描述了用于电缆、变压器、液体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），以及对特定类型电气绝缘油的适用性。 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 , D2285 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 , D1807 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 浊度 16 D6181 粘度 17 D445 , D2161 电气测试: 介质击穿电压 18 D877 , D1816 , D3300 耗散因子和相对损耗- 介电常数（电介质 常数） 19 D924 放气特性 在热应力下 20 D7150 放气倾向 21 D2300 电阻率 22 D1169 电气条件下的稳定性 排出 23 D6180 化学测试: 酸度，近似值 24 D1534 碳型成分 25 D2140 与施工的兼容性- 离子材料 26 D3455 铜含量 27 D3635 感应式元件 耦合等离子体（ICP-AES） 28 D7151 呋喃化合物 电绝缘液体 29 D5837 溶解气体分析 30 D3612 电缆和电缆的气体含量 电容器油 31 D831 , D1827 , D2945 无机氯化物和 硫酸盐 32 D878 中和（酸和 基数）数字 33 D664页 , D974 抗氧化剂含量 34 D2668 , D4768 氧化稳定性 35 D1934 , D2112 , D2440 多氯联苯 内容（PCB） 36 D4059号 相对含量 溶解衰变 37 D6802 沉积物和可溶性污泥 38 D1698 硫，腐蚀性 39 D1275 含水量 40 D1533 规范: 矿物绝缘油 电气设备 41 D3487 高火力点电气 绝缘油 42 D5222 电气用硅油 隔热 43 D4652 天然（植物油）酯 电气设备中使用的液体 仪器 44 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 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 oils. 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 , D2285 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 , D1807 Relative Density (Specific Gravity) 13 D287 , D1217 , D1298 , D1481 , D4052 Specific Heat 14 D2766 Thermal Conductivity 15 D2717 Turbidity 16 D6181 Viscosity 17 D445 , D2161 Electrical Tests: Dielectric Breakdown Voltage 18 D877 , D1816 , D3300 Dissipation Factor and Rela- tive Permittivity (Dielectric Constant) 19 D924 Gassing Characteristic Under Thermal Stress 20 D7150 Gassing Tendency 21 D2300 Resistivity 22 D1169 Stability Under Electrical Discharge 23 D6180 Chemical Tests: Acidity, Approximate 24 D1534 Carbon-Type Composition 25 D2140 Compatibility with Construc- tion Material 26 D3455 Copper Content 27 D3635 Elements by Inductively Coupled Plasma (ICP-AES) 28 D7151 Furanic Compounds in Electrical Insulating Liquids 29 D5837 Dissolved Gas Analysis 30 D3612 Gas Content of Cable and Capacitor Oils 31 D831 , D1827 , D2945 Inorganic Chlorides and Sulfates 32 D878 Neutralization (Acid and Base) Numbers 33 D664 , D974 Oxidation Inhibitor Content 34 D2668 , D4768 Oxidation Stability 35 D1934 , D2112 , D2440 Polychlorinated Biphenyl Content (PCB) 36 D4059 Relative Content of Dissolved Decay 37 D6802 Sediment and Soluble Sludge 38 D1698 Sulfur, Corrosive 39 D1275 Water Content 40 D1533 Specification: Mineral Insulating Oil for Electrical Apparatus 41 D3487 High Firepoint Electrical Insulating Oils 42 D5222 Silicone Fluid used for Electrical Insulation 43 D4652 Natural (Vegetable Oil) Ester Fluids used in Electrical Apparatus 44 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.