ASTM-D3955 › Standard Specification for Electrical Insulating Varnishes
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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 DA—Air-dry
Grade DO—Organic solvent containing, baking,
Grade DM—Reactive diluent containing,
Grade DS—Silicone,
Grade DW—Water containing, and
Grade DT—Thixotropic.
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.
Keywords
varnish, air-dry; varnish, electrical; varnish, silicone; varnish, solvent containing; varnish, thixotropic; varnish, water containing
To find similar documents by ASTM Volume:
10.02 (Electrical Insulation (II): D2518 - latest)
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Document Number
ASTM-D3955-13
Revision Level
2013 EDITION
Status
Current
Modification Type
Revision
Publication Date
April 15, 2013
Document Type
Specification
Page Count
4 pages
Committee Number
D09.01