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Significance and Use
Weight loss is useful for indicating:
A form of degradation at elevated temperatures in air, and
Evolution of volatiles that have the potential to affect other components.
1.1 This test method covers the measurement of the loss in weight of cured electrical insulating varnishes on exposure to elevated temperature in air.
1.2 The values stated in SI units are the 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. For specific precaution statements, see Section 7.
Note 1—IEC 60216 Part 2 is technically equivalent to this standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D115 Test Methods for Testing Solvent Containing Varnishes Used for Electrical Insulation
D1711 Terminology Relating to Electrical Insulation
D1932 Test Method for Thermal Endurance of Flexible Electrical Insulating Varnishes
D2518 Specification for Woven Glass Fabrics for Electrical Insulation
D5423 Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation
ICS Number Code 29.035.60 (Varnished fabrics)
UNSPSC Code 31211707(Varnishes)
ASTM D2756-07(2012), Standard Test Method for Weight Loss of Electrical Insulating Varnishes, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top