Standard Test Methods for Solventless Electrical Insulating Varnishes

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-11-2017

Publisher

American Society for Testing and Materials

1.1These test methods cover solventless varnishes used primarily as electrical, mechanical, and environmental protection for electrical equipment.

1.2These test methods are used on solventless varnishes that are applied by dipping (at atmospheric pressure conditions or under vacuum or other certain pressure), spraying, or brushing for the purpose of impregnating or sealing electrical equipment. The following test methods are included:

Property Tests (Uncured):	Section
Density	7
Flash Point	8
Gel Time	9
Monomer Content	10
Rheological Properties (Non-Newtonian)	11
Rotational Viscosity	12
Performance Property Tests (cured):
Bond Strength	13
Coating Thickness	14
Dielectric Strength	15
Dielectric Strength-Using Metal Panels	16
Permittivity and Dissipation Factor	17
Build	18

1.3The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are for information only.

1.4This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in 8.3, 15.5.1, and 15.5.2.

Note 1:This test method is related to IEC 60455. Since both methods contain multiple test procedures, many procedures are technically equivalent while others differ significantly.

1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Committee	D 09
DocumentType	Test Method
Pages	6
PublisherName	American Society for Testing and Materials
Status	Current
Supersedes	ASTM D 4733 : 2013

ASTM D 6053 : 2014 : R2018	Standard Test Method for Determination of Volatile Organic Compound (VOC) Content of Electrical Insulating Varnishes
ASTM D 3955 : 2013	Standard Specification for Electrical Insulating Varnishes

ASTM D 3278 : 2020	Standard Test Methods for Flash Point of Liquids by Small Scale Closed-Cup Apparatus
ASTM D 3056 : 2023	Standard Test Method for Gel Time of Solventless Varnishes
ASTM D 150 : 2022	Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
ASTM D 923 : 2015 : R2023	Standard Practices for Sampling Electrical Insulating Liquids
ASTM D 3636 : 2000	Standard Practice for Sampling and Judging Quality of Solid Electrical Insulating Materials
ASTM D 3487 : 2016	Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus
ASTM D 115 : 2017 : R2024	Standard Test Methods for Testing Solvent Containing Varnishes Used for Electrical Insulation
ASTM D 93 : 2019	Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
ASTM D 1711 : 2011	Standard Terminology Relating to Electrical Insulation
ASTM E 176 : 2021 : REV A : EDT 1	Standard Terminology of Fire Standards
ASTM E 176 : 2018 : REV A : EDT 1	Standard Terminology of Fire Standards
ASTM D 923 : 2015	Standard Practices for Sampling Electrical Insulating Liquids
ASTM D 6054 : 1997	Standard Practice for Conditioning Electrical Insulating Materials for Testing
ASTM D 93 : 1990 : EDT 1	Standard Test Methods for Flash Point by Pensky-Martens Closed Tester
ASTM E 176 : 2024	Standard Terminology of Fire Standards
ASTM D 3278 : 1982 : EDT 1	Standard Test Methods for Flash Point of Liquids by Setaflash Closed-Cup Apparatus
ASTM D 3312 : 2000	Standard Test Method for Percent Reactive Monomer in Solventless Varnishes
ASTM D 3278 : 2021	Standard Test Methods for Flash Point of Liquids by Small Scale Closed-Cup Apparatus
ASTM D 3312 : 2018	Standard Test Method for Percent Reactive Monomer in Solventless Varnishes
ASTM D 115 : 1998	Standard Test Methods for Testing Solvent Containing Varnishes Used for Electrical Insulation
ASTM D 3056 : 2014 : R2018	Standard Test Method for Gel Time of Solventless Varnishes
ASTM D 1475 : 1960 : R1968	Standard Method Of Test For Density Of Paint, Varnish, Lacquer, And Related Products
ASTM D 2196 : 2018	Standard Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational Viscountess
ASTM D 1711 : 1999	Standard Terminology Relating to Electrical Insulation
ASTM D 2519 : 2019	Standard Test Method for Bond Strength of Electrical Insulating Varnishes by the Helical Coil Test
ASTM E 176 : 2021	Standard Terminology of Fire Standards
ASTM D 3056 : 2000	Standard Test Method for Gel Time of Solventless Varnishes
ASTM D 115 : 2017	Standard Test Methods for Testing Solvent Containing Varnishes Used for Electrical Insulation
ASTM D 3636 : 2019	Standard Practice for Sampling and Judging Quality of Solid Electrical Insulating Materials
ASTM D 1711 : 2014 : REV A	Standard Terminology Relating to Electrical Insulation
ASTM E 176 : 2018 : REV A : EDT 2	Standard Terminology of Fire Standards
ASTM D 1711 : 2015	Standard Terminology Relating to Electrical Insulation
ASTM D 1711 : 2024	Standard Terminology Relating to Electrical Insulation
ASTM D 93 : 2000	Standard Test Methods for Flash-Point by Pensky-Martens Closed Cup Tester
ASTM D 1711 : 2022	Standard Terminology Relating to Electrical Insulation
ASTM D 3487 : 1988 : R1993	Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus
ASTM D 93 : 1985	Standard Test Method for Flash Point by Pensky-Martens Closed Tester
ASTM D 2519 : 2019 : REV A	Standard Test Method for Bond Strength of Electrical Insulating Varnishes by the Helical Coil Test
ASTM D 3487 : 2016 : EDT 1	Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus
ASTM D 1711 : 2020	Standard Terminology Relating to Electrical Insulation
ASTM D 2519 : 2018	Standard Test Method for Bond Strength of Electrical Insulating Varnishes by the Helical Coil Test
ASTM D 150 : 2018	Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
ASTM D 3056 : 2014	Standard Test Method for Gel Time of Solventless Varnishes
ASTM D 2519 : 1996	Standard Test Method for Bond Strength of Electrical Insulating Varnishes by the Helical Coil Test
ASTM D 6054 : 1997 : R2004	Standard Practice for Conditioning Electrical Insulating Materials for Testing (Withdrawn 2012)
ASTM D 2196 : 1999	Standard Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational (Brookfield type) Viscometer
ASTM D 93 : 1997	Standard Test Methods for Flash-Point by Pensky-Martens Closed Cup Tester
ASTM E 176 : 2021 : REV A	Standard Terminology of Fire Standards
ASTM D 93 : 2018	Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester