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ASTM D902-06

(Test Method)

Standard Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical Insulation

Standard Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical Insulation

SIGNIFICANCE AND USE
The electrical properties of resin-coated glass fabrics are affected by their temperature and moisture content. For this reason it is necessary to control these properties for a specified time immediately prior to testing in order to attain reasonably good reproducibility of test values. The time of exposure to the conditioning atmosphere must be long enough to permit the test specimen to reach a relatively stable value. Usually the moisture content of these materials has little effect on the mechanical properties.
SCOPE
1.1 These test methods cover procedures for the testing of resin-coated glass fabrics and glass fabric tapes (Note 1) to be used as electrical insulation.
Note 1 - Methods of testing varnished cloths and tapes are given in Methods D 295.
1.2 The warp threads in fabrics are the threads that are parallel with the length dimension as manufactured.
1.3 The procedures appear as follows:
1.4 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are for information only.
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. Specific warning statement are given in 35.1.1 and 58.1.

General Information

Status
Historical
Publication Date
30-Sep-2006
ICS
29.035.30 - Glass and ceramic insulating materials
Technical Committee
D09 - Electrical and Electronic Insulating Materials
Drafting Committee
D09.07 - Electrical Insulating Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D902-00 - Standard Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical Insulation
Effective Date
01-Oct-2006
Replaced By
ASTM D902-12 - Standard Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical Insulation (Withdrawn 2020)
Effective Date
01-Apr-2012
Referred By
ASTM D4969-17(2022) - Standard Specification for Polytetrafluoroethylene–(PTFE) Coated Glass Fabric
Effective Date
01-Oct-2006

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ASTM D902-06 - Standard Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical InsulationASTM D902-06 - Standard Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical Insulation
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ASTM D902-06 - Standard Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical Insulation
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation:D902–06
Standard Test Methods for
Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes
1
Used for Electrical Insulation
This standard is issued under the fixed designation D902; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* 2. Referenced Documents
2
1.1 These test methods cover procedures for the testing of 2.1 ASTM Standards:
resin-coated glass fabrics and glass fabric tapes (Note 1)tobe D149 Test Method for Dielectric Breakdown Voltage and
used as electrical insulation. Dielectric Strength of Solid Electrical Insulating Materials
at Commercial Power Frequencies
NOTE 1—Methods of testing varnished cloths and tapes are given in
D150 Test Methods for AC Loss Characteristics and Per-
Methods D295.
mittivity (Dielectric Constant) of Solid Electrical Insula-
1.2 The warp threads in fabrics are the threads that are
tion
parallel with the length dimension as manufactured.
D295 Test Methods for Varnished Cotton Fabrics Used for
1.3 The procedures appear as follows:
Electrical Insulation
ASTM Test
D374 Test Methods for Thickness of Solid Electrical Insu-
Procedure Section Method Reference
lation
Breaking Strength 22-28 D828
Conditioning 6-8 .
D828 Test Method for Tensile Properties of Paper and
Dielectric Breakdown Voltage and Di- 29-38 D149, D295
Paperboard Using Constant-Rate-of-Elongation Appara-
electric Strength
3
tus
Dissipation Factor and Relative Permit- 52-60 D150, E104,
tivity D5032
D1711 Terminology Relating to Electrical Insulation
Effect of Elevated Temperature 39-45 D1830
D1830 Test Method for Thermal Endurance of Flexible
Resistance to Oil 46-51 D3487
Sheet Materials Used for Electrical Insulation by the
Sampling 3-5 .
Thermal Endurance 68 D1830
Curved Electrode Method
Thickness 16-21 D374
D3487 Specification for Mineral Insulating Oil Used in
Thread Count 12-15 .
Electrical Apparatus
Weight 9-11 .
Weight Loss at Elevated Temperature 61-67 D5423
D5032 Practice for Maintaining Constant Relative Humid-
ity by Means of Aqueous Glycerin Solutions
1.4 The values stated in inch-pound units are to be regarded
D5423 Specification for Forced-Convection Laboratory
as the standard. The values in parentheses are for information
Ovens for Evaluation of Electrical Insulation
only.
E104 Practice for Maintaining Constant Relative Humidity
1.5 This standard does not purport to address all of the
by Means of Aqueous Solutions
safety concerns, if any, associated with its use. It is the
2.2 IEEE Standard:
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. Specific warning
statement are given in 35.1.1 and 58.1.
1 2
These methods are under the jurisdiction of ASTM Committee D09 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Electrical and Electronic Insulating Materials, and are the direct responsibility of contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Subcommittee D09.07 on Flexible and Rigid Insulating Materials. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Oct. 1, 2006. Published October 2006. Originally the ASTM website.
3
approved in 1946. Last previous edition approved in 2000 as D902 – 00. DOI: Withdrawn. The last approved version of this historical standard is referenced
10.1520/D0902-06. on www.astm.org.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D902–06
IEEE No. 1 General Principles for Temperature Limits in Use the method described in 8.1.3 only if specifically agreed
4
the Rating of Electrical Equipment upon by the producer and consumer.
8.1.1 Condition the test specimen for 48 h in the Standard
SAMPLING
Laboratory Atmosphere (50 6 2 % relative humidity at a
temperature of 23 6 1 °C (73.4 6 1.8 °F)), and conduct the
3. Selecting Sample Rolls
tests in the Standard Laboratory Atmosphere.
3.1 Sampleshipmentsofresin-coatedglassfabricsandglass
8.1.2 Condition the test specimen for 48 h in the Standard
fabric tapes as specified in 3.2 and 3.3. Select the rolls or pads
Laboratory Atmosphere (50 6 2 % relative humidity at a
in such a manner as to be representative of the shipment.
temperature of 23 6 1 °C (73.4 6 1.8 °F)), and conduct
...

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