1. Scope

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:

1.5 This standard does not purport to address all of the safety problems, 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D92 Test Method for Flash and Fire Points by Cleveland Open Cup Tester

D97 Test Method for Pour Point of Petroleum Products

D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

D877 Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes

D923 Practices for Sampling Electrical Insulating Liquids

D924 Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids

D974 Test Method for Acid and Base Number by Color-Indicator Titration

D1169 Test Method for Specific Resistance (Resistivity) of Electrical Insulating Liquids

D1298 Test Method for Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method

D1481 Test Method for Density and Relative Density (Specific Gravity) of Viscous Materials by Lipkin Bicapillary Pycnometer

D1533 Test Method for Water in Insulating Liquids by Coulometric Karl Fischer Titration

D1807 Test Methods for Refractive Index and Specific Optical Dispersion of Electrical Insulating Liquids

D1816 Test Method for Dielectric Breakdown Voltage of Insulating Oils of Petroleum Origin Using VDE Electrodes

D2129 Test Method for Color of Clear ElectricalInsulating Liquids (Platinum-Cobalt Scale)

D2161 Practice for Conversion of Kinematic Viscosity to Saybolt Universal Viscosity or to Saybolt Furol Viscosity

D2864 Terminology Relating to Electrical Insulating Liquids and Gases

D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter

D4059 Test Method for Analysis of Polychlorinated Biphenyls in Insulating Liquids by Gas Chromatography

D4559 Test Method for Volatile Matter in Silicone Fluid

D4652 Specification for Silicone Fluid Used for Electrical Insulation

D5282 Test Methods for Compatibility of Construction Material with Silicone Fluid Used for Electrical Insulation

Keywords

electrical insulating fluid; silicone fluid ;

ICS Code

ICS Number Code 29.040.10 (Insulating oils)

DOI: 10.1520/D2225-04

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