ASTM D374-99(2004)
Standard Test Methods for Thickness of Solid Electrical Insulation

Standard No.

ASTM D374-99(2004)

Release Date

1999

Published By

American Society for Testing and Materials (ASTM)

Status

Withdraw 2013-01

Replace By

ASTM D374/D374M-16

Latest

ASTM D374/D374M-23

Scope

Some electrical properties, such as dielectric strength, vary with the thickness of the material. Determination of certain properties, such as relative permittivity (dielectric constant) and volume resistivity, usually require a knowledge of the thickness. Design and construction of electrical machinery require that the thickness of insulation be known.

1.1 These test methods cover the determination of the thickness of several types of solid electrical insulating materials employing recommended techniques. Use these test methods except as otherwise required by a material specification.

1.2 The values stated in inch-pound 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.

ASTM D374-99(2004) history

• 2023 ASTM D374/D374M-23 Standard Test Methods for Thickness of Solid Electrical Insulation
• 2016 ASTM D374/D374M-16 Standard Test Methods for Thickness of Solid Electrical Insulation
• 1999 ASTM D374-99(2004) Standard Test Methods for Thickness of Solid Electrical Insulation
• 1999 ASTM D374-99 Standard Test Methods for Thickness of Solid Electrical Insulation