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ASTM D1903-08(2017)

Historical Reaffirmation

Standard Test Method for Coefficient of Thermal Expansion of Electrical Insulating Liquids of Petroleum Origin, and Askarels

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1.1 This practice covers the determination of the coef-ficient of thermal expansion of electrical insulating liquids of petroleum origin, and askarels, containing PCBs (polychlorinated biphenyls), when used as an insulating or cooling medium, or both, in cables, transformers, oil circuit breakers, capacitors, or similar apparatus.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 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.


4.1 Knowledge of the coefficient of thermal expansion of a liquid is essential to compute the required size of a container to accommodate a volume of liquid over the full temperature range to which it will be subjected. It is also used to compute the volume of void space that would exist in an inelastic device filled with the liquid after the liquid has cooled to a lower temperature.

SDO ASTM: ASTM International
Document Number D1903
Publication Date Jan. 1, 2017
Language en - English
Page Count 2
Revision Level 08(2017)
Supercedes
Committee D27.07
Publish Date Document Id Type View
Nov. 1, 2008 D1903-08 Revision
March 10, 2003 D1903-03 Revision
Jan. 1, 1996 D1903-96 Revision
Jan. 1, 2017 D1903-08R17 Reaffirmation