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Significance and Use
5.1 Different combinations of varnishes and film-insulated magnet wire behave differently when exposed to elevated temperatures. This includes different varnishes tested with the same film-insulated magnet wire and a single varnish tested with different film-insulated magnet wire.
5.2 This test method is used to determine the effect on the electrical properties of a varnish applied to film-insulated magnet wire when the combination is exposed to prescribed elevated temperatures.
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.
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
D2307 Test Method for Thermal Endurance of Film-Insulated Round Magnet Wire
IEC StandardIEC 60172 Test Procedure for the determination of the temperature index of enameled winding wires Available from American National Standards Association, 25 W. 43rd St., 4th Floor, New York, NY 10036.
ICS Number Code 29.035.60 (Varnished fabrics)
UNSPSC Code 26121509(Magnet wire)
ASTM D3251-04(2013), Standard Test Method for Thermal Endurance Characteristics of Electrical Insulating Varnishes Applied Over Film-Insulated Magnet Wire, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top