ASTM D1677-02

Standard Methods for Sampling and Testing Untreated Mica Paper Used for Electrical Insulation

SCOPE
1.1 These methods cover procedures for sampling and testing untreated mica paper to be used as an electrical insulator or as a constituent of a composite material used for electrical insulating purposes.
1.2 The procedures appear in the following order:ASTMMethodProceduresSectionsReferencesApparent Density12 ...Aqueous Extract Conductivity32 and 33D 202Conditioning4 D 685Dielectric Strength16-19D 149Impregnation Time20-24D 202Moisture Content26-28D 644Roll Quality25 ...Sampling3 ...Tensile Strength13-15D 828Thickness6-10D 374Weight11D 646Weight Variability29-31...
1.3 The values stated in inch-pound units are to be regarded as the standard.
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 whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Mar-2002
• ICS: 29.035.50 - Mica based materials
• Technical Committee: D09 - Electrical and Electronic Insulating Materials

Relations

• Replaces: ASTM D1677-86(1993)e1 - Standard Methods for Sampling and Testing Untreated Mica Paper Used for Electrical Insulation
• Effective Date: 10-Mar-2002
• Replaced By: ASTM D1677-02(2007) - Standard Methods for Sampling and Testing Untreated Mica Paper Used for Electrical Insulation
• Effective Date: 01-Oct-2007

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D1677–02
Standard Methods for
Sampling and Testing Untreated Mica Paper Used for
1
Electrical Insulation
This standard is issued under the fixed designation D 1677; 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.
1. Scope D 374 Test Methods for Thickness of Solid Electrical Insu-
3
lation
1.1 These methods cover procedures for sampling and
D 644 Test Method for Moisture Content of Paper and
testing untreated mica paper to be used as an electrical
4
Paperboard by Oven Drying
insulator or as a constituent of a composite material used for
D 646 Test Method for Grammage of Paper and Paperboard
electrical insulating purposes.
4
2 (Weight Per Unit Area)
1.2 The procedures appear in the following order:
D 685 Practice for Conditioning Paper and Paper Products
ASTM
4
for Testing
Method
Procedures Sections References
D 828 Test Method for Tensile Breaking Strength of Paper
Apparent Density 12 .
4
and Paperboard
Aqueous Extract Conductivity 32 and 33 D 202
3
D 1711 Terminology Relating to Electrical Insulation
Conditioning 4 D 685
Dielectric Strength 16-19 D 149
Impregnation Time 20-24 D 202
3. Sampling
Moisture Content 26-28 D 644
3.1 Sample in accordance with the requirements set forth in
Roll Quality 25 .
Sampling 3 .
Test Methods D 202.
Tensile Strength 13-15 D 828
3.2 Make the tests for physical properties on each sample
Thickness 6-10 D 374
insofar as the specimens are of sufficient width.
Weight 11 D 646
Weight Variability 29-31 .
3.3 Untreated mica papers are, in general, quite fragile and
friable. At all times during the operations of sampling, condi-
1.3 The values stated in inch-pound units are to be regarded
tioning, specimen preparation, and testing, great care must be
as the standard.
taken to prevent flexing and tearing, and to minimize abrasion
1.4 This standard does not purport to address all of the
of particles from the surfaces. The test values may be signifi-
safety concerns, if any, associated with its use. It is the
cantly and adversely affected if these precautions are not taken.
responsibility of whoever uses this standard to consult and
establish appropriate safety and health practices and deter-
4. Conditioning
mine the applicability of regulatory limitations prior to use.
4.1 Condition samples in accordance with Practice D 685,
2. Referenced Documents exceptthatsamplesshouldremainintheconditionedairfornot
less than 16 h prior to the tests.
2.1 ASTM Standards:
4.2 The following physical tests shall be made in the
D 149 Test Methods for Dielectric Breakdown Voltage and
conditioned atmosphere: thickness, weight, tensile strength,
Dielectric Strength of Solid Electrical Insulating Materials
3
dielectric strength, and impregnation.
at Commercial Power Frequencies
D 202 Test Methods for Sampling and Testing Untreated
5. Precision and Bias
3
Paper Used for Electrical Insulation
5.1 Due to the range of types and grades, and nonuniform
nature of commercially available mica papers, no statement
1
can be made about the precision of these methods when used
These methods are under the jurisdiction of ASTM Committee D09 on
Electrical and Electronic Insulating Materials and are the direct responsibility of
on these materials. Neither can a statement about bias be made
Subcommittee D09.19 on Dielectric Sheet and Roll Products.
because of the unavailability of standard reference materials.
Current edition approved March 10, 2002. Published June 2002. Originally
e1
Nevertheless, these methods serve to distinguish basic, relative
published as D 1677 – 59 T. Last previous edition D 1677 – 86(93) .
2
The test methods for other properties will be added in accordance with standard
ASTM procedures as their need becomes generally desirable.
3 4
Annual Book of ASTM Standards, Vol 10.01. Annual Book of ASTM Standards, Vol 15.09.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D1677–02
differences in properties, and variations in quality among mica
where:
2
papers used in electrical insulation.
A = basis weight, kg/m ,
B = thickness, µm, and
3
THICKNESS AND THICKNESS VARIATION
D = apparent density, g/cm .
6. Terminology Definition
TENSILE STRENGTH
6.1 thickness, n—of an electrical insulating material, the
perpendicular distance between the two surfaces of interest,
13. Significance and Use
determined in accordance with a standard method.
13.1 The results of the test are suitable for acceptance and
product control.They are also a means of
...