ASTM D117-22 PDF

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.

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Number of Pages :	16
Published :	05/01/2022