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ASTM D1458-01

(Test Method)

Standard Test Methods for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation

Standard Test Methods for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation

SCOPE
1.1 These test methods cover procedures for testing fully cured silicone rubber-coated glass fabric and tapes to be used for electrical insulation.
1.2 The procedures appear in the following order:ProcedureSectionsASTM ReferencesBreaking Strength7 D 828 Breaking Strength After Creasing8...Conditioning5 ...Dielectric Breakdown Voltage9D 149, D 295,D 6054Dielectric Proof-Voltage10D 1389 Dissipation Factor and Relative Permittivity11D 150Sampling4 ...Thermal Endurance15 D 1830 Thickness6 D 374 Thread Count14 ...Volume Resistivity12 D 257Weight13 ...
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 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. See 9.5.1 for a specific warning statement.

General Information

Status
Historical
Publication Date
09-Sep-2001
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 D1458-96 - Standard Test Methods for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation
Effective Date
10-Sep-2001
Replaced By
ASTM D1458-01(2007) - Standard Test Methods for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation
Effective Date
01-May-2007
Referred By
ASTM D6343-14(2018) - Standard Test Methods for Thin Thermally Conductive Solid Materials for Electrical Insulation and Dielectric Applications
Effective Date
10-Sep-2001
Referred By
ASTM D2148-22 - Standard Test Methods for Bondable Silicone Rubber Tapes Used for Electrical Insulation
Effective Date
10-Sep-2001

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ASTM D1458-01 - Standard Test Methods for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical InsulationASTM D1458-01 - Standard Test Methods for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation
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ASTM D1458-01 - Standard Test Methods for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes 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:D1458–01
Standard Test Methods for
Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes
1
for Electrical Insulation
This standard is issued under the fixed designation D 1458; 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 (e) 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 D 202 Test Methods for Sampling and Testing Untreated
2
Paper Used for Electrical Insulation
1.1 These test methods cover procedures for testing fully
D 257 Test Methods for D-C Resistance or Conductance of
cured silicone rubber-coated glass fabric and tapes to be used
2
Insulating Materials
for electrical insulation.
D 295 Test Methods for Varnished Cotton Fabrics Used for
1.2 The procedures appear in the following order:
2
Electrical Insulation
ASTM
D 374 Test Methods for Thickness of Solid Electrical Insu-
Procedure Sections References
2
lation
Breaking Strength 7 D 828
D 828 Test Method for Tensile Properties of Paper and
Breaking Strength After Creasing 8 .
Paperboard Using Constant-Rate-of-Elongation Appara-
Conditioning 5 .
3
Dielectric Breakdown Voltage 9 D 149, D 295,
tus
D 6054
D 1389 Test Method for Proof-Voltage Testing of Thin
Dielectric Proof-Voltage 10 D 1389
2
Dissipation Factor and Relative Permittivity 11 D 150 Solid Electrical Insulating Materials
2
Sampling 4 .
D 1711 Terminology Relating to Electrical Insulation
Thermal Endurance 15 D 1830
D 1830 Test Method for Thermal Endurance of Flexible
Thickness 6 D 374
Thread Count 14 . Sheet Materials Used for Electrical Insulation by the
2
Volume Resistivity 12 D 257
Curved Electrode Method
Weight 13 .
D 5032 Practice for Maintaining Constant Relative Humid-
4
1.3 The values stated in inch-pound units are to be regarded
ity by Means of Aqueous Glycerin Solutions
as the standard. The values given in parentheses are for
D 6054 Practice for Conditioning Electrical Insulating Ma-
4
information only.
terials for Testing
1.4 This standard does not purport to address all of the
E 104 Practice for Maintaining Constant Relative Humidity
5
safety concerns, if any, associated with its use. It is the
by Means of Aqueous Solutions
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. See 9.5.1 for a 3.1 Definitions—For definitions of terms used in these test
specific warning statement.
methods, see Terminology D 1711.
2. Referenced Documents 4. Sampling
2.1 ASTM Standards:
4.1 Sample shipments of material as specified below, and
D 149 Test Method for Dielectric Breakdown Voltage and where possible take only one sample from any package.
Dielectric Strength of Solid Electrical Insulating Materials
4.1.1 Fabric—Over 3 in. (75 mm) in width.
2
at Commercial Power Frequencies
4.1.1.1 Rolls—Select one roll from each ten rolls or fraction
D 150 Test Methods for AC Loss Characteristics and Per-
thereof in a shipment of full-width fabric. Cut off not less than
mittivity (Dielectric Constant) of Solid Electrical Insulat-
two turns of fabric from each roll selected from sampling, and
2
ing Materials
1
These test methods are under the jurisdiction of ASTM Committee D09 on
Electrical and Electronic Insulating Materials and are the direct responsibility of
Subcommittee D09.07 on Flexible and Rigid Insulating Materials.
3
Current edition approved Sept. 10, 2001. Published November 2001. Originally Annual Book of ASTM Standards, Vol 15.09.
4
published as D 1458 – 57 T. Last previous edition D 1458 – 96. Annual Book of ASTM Standards, Vol 10.02.
2 5
Annual Book of ASTM Standards, Vol 10.01. Annual Book of ASTM Standards, Vol 11.03.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D1458
select sample material for the preparation of test specimens 6.2 Test Specimens—Cut specimens prepared from fabric
from the remaining layers of the roll. samples 1 in. (25 mm) wide across the entire width of the
fabric, while specimens prepared from tape and strip samples
4.1.1.2 Sheets—Select one sheet from each 50 sheets or
fraction thereof in a shipment of sheeted fabric. Remove not shall be the width of the sample and 36 in. (910 mm) long.
Where the specimen is 36 in. or longer (full-width fabric 36 in.
less than six sheets from the outer layers of each package of
sheets selected from sampling, and then select sample material or more in width, or where the length
...

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