ASTM D4881-05
Standard Test Method for Thermal Endurance of Varnished Fibrous- or Film-Wrapped Magnet Wire

Standard No.

ASTM D4881-05

Release Date

2005

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D4881-05(2012)

Latest

ASTM D4881-05(2017)

Scope

Individual varnishes behave differently when applied to the same fibrous- or film-wrapped magnet wire when exposed to elevated temperatures. Likewise, a varnish does not always behave the same when applied to different types of fibrous or film-wrapped magnet wires and when exposed to elevated temperatures.

FIG. 1 Jig for Forming Wire

1.1 This test method covers the determination of thermal endurance of rectangular and square fibrous- or film-wrapped magnet wire coated with an insulating varnish.

1.2 The values given in SI units are the standard. The values given in parentheses are for information only.

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. A specific precautionary statement is given in Section 5.

Note 18212;There is no similar or equivalent IEC Standard.

ASTM D4881-05 history

• 2017 ASTM D4881-05(2017) Standard Test Method for Thermal Endurance of Varnished Fibrous- or Film-Wrapped Magnet Wire
• 2005 ASTM D4881-05(2012) Standard Test Method for Thermal Endurance of Varnished Fibrous- or Film-Wrapped Magnet Wire
• 2005 ASTM D4881-05 Standard Test Method for Thermal Endurance of Varnished Fibrous- or Film-Wrapped Magnet Wire
• 2001 ASTM D4881-01 Standard Test Method for Thermal Endurance of Varnished Fibrous- or Film-Wrapped Magnet Wire
• 2001 ASTM D4881-97 Standard Test Method for Thermal Endurance of Varnished Fibrous- or Film-Wrapped Magnet Wire