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ASTM D1934-95(2012)

Historical Reaffirmation

Standard Test Method for Oxidative Aging of Electrical Insulating Liquids by Open-Beaker Method

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1.1 This test method covers two procedures for subjecting electrical insulating oils to oxidative aging:

1.1.1 Procedure A, without a metal catalyst, and

1.1.2 Procedure B, with a metal catalyst.

1.2 This test method is applicable to oils used as impregnating or pressure media in electrical power transmission cables if less than 10 % of the oil evaporates during the aging procedures. It applies and is generally useful primarily in the evaluation and quality control of unused oils, either inhibited or uninhibited.

1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

1.4 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.

Open-beaker oxidative aging methods have been used for many years in laboratories of oil companies, electrical equipment manufacturers, and electric utility companies interested in the stability of electrical insulating oils under oxidative conditions. They are particularly useful as a check on the continuity of production and shipment of insulating oils. They are also useful as process and product checks for applicable type oils.

Specification limits for oils subjected to open-beaker oxidative aging by this method are established by agreement between individual producers and consumers of applicable type oils. These properties of the oil involved in specification limits for aging stability may be measured after the oxidative aging (and sometimes before aging) by appropriate test methods such as Test Method D924, Test Method D1169, and Test Method D664.

SDO ASTM: ASTM International
Document Number D1934
Publication Date Feb. 1, 2012
Language en - English
Page Count 3
Revision Level 95(2012)
Supercedes
Committee D27.06
Publish Date Document Id Type View
Dec. 1, 2020 D1934-20 Revision
Feb. 1, 2012 D1934-95R12 Reaffirmation
Oct. 1, 2005 D1934-95R05 Reaffirmation
April 10, 2000 D1934-95R00 Reaffirmation