1.1 This test method covers and is intended as a rapid method for the evaluation of the oxidation stability of new mineral insulating oils containing a synthetic oxidation inhibitor. This test is considered of value in checking the oxidation stability of new mineral insulating oils containing 2,6-ditertiary-butyl para-cresol or 2,6-ditertiary-butyl phenol, or both, in order to control the continuity of this property from shipment to shipment. The applicability of this procedure for use with inhibited mineral insulating oils of more than 12 cSt at 40°C (approximately 65 SUS at 100F) has not been established.

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. (See warning in 6.7.)Note 1

A modification of this test method, which uses the same procedure and apparatus but a higher (150°C) bath temperature, has been published as Test Method D 2272.

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

B1 Specification for Hard-Drawn Copper Wire

D2272 Test Method for Oxidation Stability of Steam Turbine Oils by Rotating Pressure Vessel

E1 Specification for ASTM Liquid-in-Glass Thermometers

Keywords

electrical; inhibitor; insulating oil; mineral oil; oxidation stability; pressure vessel; rotating vessel; transformer oil;

ICS Code

ICS Number Code 29.040.10 (Insulating oils)

Citing ASTM Standards

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