| ASTM D3251 Standard Test Method for Thermal Endurance Characteristics of Electrical Insulating Varnishes Applied Over Film-Insulated Magnet Wire
ASTM D3251 与绝缘能力和应用相关的复合绝缘涂层的标准分类
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.
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. Scope
1.1 This test method covers the determination of the thermal endurance characteristics of electrical insulating varnishes and film-insulated magnet wire in combination.
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 and health practices and determine the applicability of regulatory limitations prior to use.
Note 1—This test method is equivalent to IEC 60172.
2. Referenced Documents (purchase separately
ASTM Standards
ASTM D115 Test Methods for Testing Solvent Containing Varnishes Used for Electrical Insulation
ASTM D1711 Terminology Relating to Electrical Insulation
ASTM D2307 Test Method for Thermal Endurance of Film-Insulated Round Magnet Wire
IEC Standard
IEC60172 Test Procedure for the determination of the temperature index of enameled winding wires
Index Terms
magnet wire; thermal endurance; twisted pair; varnish; Electrical insulating varnishes; Magnet wire--film-insulated; Thermal analysis (TA); Thermal endurance--electrical insulating materials; Twisted pair
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