• ASTM D2225-04(2012)

ASTM D2225-04(2012)

Standard Test Methods for Silicone Fluids Used for Electrical Insulation

ASTM International, 05/01/2012

Publisher: ASTM

File Format: PDF

$27.00$54.00


Published:01/05/2012

Pages:4

File Size:1 file , 85 KB

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1.1 These test methods cover the testing of silicone fluids for use in transformers, capacitors, and electronic assemblies as an insulating or cooling medium, or both. These methods are generally suitable for specification acceptance, factory control, referee testing, and research.

1.2 Although some of the test methods listed here apply primarily to petroleum-based fluids, they are, with minor revisions, equally applicable to silicone fluids.

1.3 Silicone fluids are used for electrical insulating purposes because of their stable properties at high and low temperatures and their relative environmental inertness.

1.4 A list of the properties and standards are as follows:

Property Measured Section ASTM Test Method
Physical:
Color 6 D2129
Flash point 7 D92
Fire point 7 D92
Polychlorinated biphenyl
content
8 D4059
Pour point 9 D97
Refractive index 10 D1807
Specific gravity 11 D1298, D1481, D4052
Volatility 12 D4559
Viscosity 13 D445, D2161
Chemical:
Neutralization number 14 D974
Water content 15 D1533
Electrical:
Relative permittivity 16 D924
Dielectric breakdown
voltage
17 D877
Dissipation factor 18 D924
Specific resistance 19 D1169
Compatibility 20 D5282

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 and health practices and determine the applicability of regulatory limitations prior to use.

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