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ASTM D2440 : 13(2021)

Standard Test Method for Oxidation Stability of Mineral Insulating Oil

Standard Details

1.1 This test method determines the resistance of mineral transformer oils to oxidation under prescribed accelerated aging conditions. Oxidation stability is measured by the propensity of oils to form sludge and acid products during oxidation. This test method is applicable to new oils, both uninhibited and inhibited, but is not well defined for used or reclaimed oils.

Note 1: A shorter duration oxidation test for evaluation of inhibited oils is available in Test Method D2112.

Note 2: For those interested in the measurement of volatile acidity, reference is made to IEC Method 61125. 2

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

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International StandardDetails, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status : ACTIVE
Standard Type: Main
Document No: ASTM D2440 : 13(2021)
Document Year: 2013
Pages: 5
  • Section Volume:
  • 10.03 Volume 10.03 Electrical Insulating Liquids and Gases; Electrical Protective Equipment

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