Standard Historical Last Updated: Apr 24, 2013 Track Document
ASTM D3955-04(2009)

Standard Specification for Electrical Insulating Varnishes

Standard Specification for Electrical Insulating Varnishes D3955-04R09 ASTM|D3955-04R09|en-US Standard Specification for Electrical Insulating Varnishes Standard new BOS Vol. 10.02 Committee D09
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Abstract

This specification covers the tests and values for electrical insulating varnishes, as supplied, which are suitable for the impregnation and treatment of electrical coils and windings applied by dip process. The varnishes are classified according to grades: Grade DA; Grade DO; Grade DM; Grade DS; Grade DW; and Grade DT. This specification covers both flexible and rigid, solvent and solventless insulating varnishes. The insulating varnishes are classified according to thermal classes: Class 130; Class 155; Class 180; Class 200; and Class 220. Quality conformance tests shall be performed to conform to the specified requirements.

Scope

1.1 This specification covers the tests and values for electrical insulating varnishes, as supplied, which are suitable for the impregnation and treatment of electrical coils and windings applied by dip process.

1.2 Varnishes, flexible or rigid, included in this specification are:

Grade DAAir-dry

Grade DOOrganic solvent containing, baking,

Grade DMReactive diluent containing,

Grade DSSilicone,

Grade DWWater containing, and

Grade DTThixotropic.

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

Note 1—This specification resembles IEC 60455 in title only. The content is significantly different.

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Details
Book of Standards Volume: 10.02
Developed by Subcommittee: D09.01
Pages: 4
DOI: 10.1520/D3955-04R09
ICS Code: 29.035.60