ASTM D 117 : 2022
Current
The latest, up-to-date edition.
Standard Guide for Sampling, Test Methods, and Specifications for Electrical Insulating Liquids
Hardcopy , PDF
English
13-06-2022
1.1This 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.
1.2The 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.
1.3This 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- | 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 | 10 | D97, D5949, D5950 |
Particle Count in Mineral | 11 | D6786 |
Refractive Index and Specific | 12 | D1218 |
Relative Density (Specific | 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- | 18 | D924 |
Gassing Characteristic | 19 | D7150 |
Gassing Tendency | 20 | D2300 |
Resistivity | 21 | D1169 |
Chemical Tests: | ||
Acidity, Approximate | 22 | D1534 |
Carbon-Type Composition | 23 | D2140 |
Compatibility with Construc- | 24 | D3455 |
Copper Content | 25 | D3635 |
Elements by Inductively | 26 | D7151 |
Furanic Compounds in | 27 | D5837 |
Dissolved Gas Analysis | 28 | D3612 |
Gas Content of Cable and | 29 | D831, D1827, D2945 |
Neutralization (Acid and | 30 | D664, D974 |
Oxidation Inhibitor Content | 31 | D2668, D4768 |
Oxidation Stability | 32 | D1934, D2112, D2440 |
Polychlorinated Biphenyl | 33 | D4059 |
Sulfur, Corrosive | 34 | D1275 |
Water Content | 35 | D1533 |
Specification: | ||
Mineral Insulating Liquid for | 36 | D3487 |
Less Flammable Electrical | 37 | D5222 |
Silicone Fluid used for Electrical | 38 | D4652 |
Natural (Vegetable Oil) Ester | 39 | D6871 |
1.4The values stated in SI units are to be regarded as standard. The values stated in parentheses are provided for information only.
1.5This 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.
1.6This 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.
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