ASTM D1830-17
(Test Method)Standard Test Method for Thermal Endurance of Flexible Sheet Materials Used for Electrical Insulation by the Curved Electrode Method
Standard Test Method for Thermal Endurance of Flexible Sheet Materials Used for Electrical Insulation by the Curved Electrode Method
SIGNIFICANCE AND USE
5.1 A major factor affecting the life of insulating materials is thermal degradation. Other factors, such as moisture and vibration, are able to cause failures after the material has been weakened by thermal degradation.
5.2 Electrical insulation is effective in electrical equipment only as long as it retains its physical and electrical integrity. Thermal degradation is able to be characterized by weight change, porosity, crazing, and generally a reduction in flexibility, and is usually accompanied by an ultimate reduction in dielectric breakdown voltage.
SCOPE
1.1 This test method provides a procedure for evaluating thermal endurance of flexible sheet materials by determining dielectric breakdown voltage at room temperature after aging in air at selected elevated temperatures. Thermal endurance is expressed in terms of a temperature index.
1.2 This test method is applicable to such solid electrical insulating materials as coated fabrics, dielectric films, composite laminates, and other materials where retention of flexibility after heat aging is of major importance (see Note 4).
1.3 This test method is not intended for the evaluation of rigid laminate materials nor for the determination of thermal endurance of those materials which are not expected or required to retain flexibility in actual service.
1.4 The values stated in acceptable metric units are to be regarded as the standard. The values in parentheses are for information only.
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see 10.1.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D1830 − 17
Standard Test Method for
Thermal Endurance of Flexible Sheet Materials Used for
1
Electrical Insulation by the Curved Electrode Method
This standard is issued under the fixed designation D1830; 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 U.S. Department of Defense.
1. Scope 2. Referenced Documents
2
1.1 This test method provides a procedure for evaluating 2.1 ASTM Standards:
thermal endurance of flexible sheet materials by determining D149 Test Method for Dielectric Breakdown Voltage and
dielectric breakdown voltage at room temperature after aging DielectricStrengthofSolidElectricalInsulatingMaterials
in air at selected elevated temperatures. Thermal endurance is at Commercial Power Frequencies
expressed in terms of a temperature index. D374 Test Methods for Thickness of Solid Electrical Insu-
lation (Metric) D0374_D0374M
1.2 This test method is applicable to such solid electrical
D5423 Specification for Forced-Convection Laboratory Ov-
insulating materials as coated fabrics, dielectric films, compos-
ens for Evaluation of Electrical Insulation
ite laminates, and other materials where retention of flexibility
2.2 Institute of Electrical and Electronics Engineers Publi-
after heat aging is of major importance (see Note 4).
3
cations:
1.3 This test method is not intended for the evaluation of
IEEENo.1 GeneralPrinciplesforTemperatureLimitsinthe
rigid laminate materials nor for the determination of thermal
Rating of Electrical Equipment
endurance of those materials which are not expected or
IEEE No. 101A Guide for the Statistical Analysis of Ther-
required to retain flexibility in actual service.
mal Life Test Data (including Appendix A)
1.4 The values stated in acceptable metric units are to be
2.3 IEC Publications:
regarded as the standard. The values in parentheses are for
IEC 216 Guide for the Determination of Thermal Endurance
information only.
Properties of Electrical Insulating Materials (Parts 1 and
4
2)
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
3.1 Definitions:
mine the applicability of regulatory limitations prior to use.
3.1.1 temperature index, n—a number which permits com-
For a specific hazard statement, see 10.1.
parison of the temperature/time characteristics of an electrical
1.6 This international standard was developed in accor-
insulatingmaterial,orasimplecombinationofmaterials,based
dance with internationally recognized principles on standard-
on the temperature in degrees Celsius which is obtained by
ization established in the Decision on Principles for the
extrapolating theArrhenius plot of life versus temperature to a
Development of International Standards, Guides and Recom-
specified time, usually 20 000 h.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
1
This test method is under the jurisdiction of ASTM Committee D09 on Standards volume information, refer to the standard’s Document Summary page on
Electrical and Electronic Insulating Materials and is the direct responsibility of the ASTM website.
3
Subcommittee D09.01 on Electrical Insulating Products Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE),
Current edition approved Nov. 1, 2017. Published December 2017. Originally 445 Hoes Ln., P.O. Box 1331, Piscataway, NJ 08854-1331.
4
approved in 1961. Last previous edition approved in 2012 as D1830 – 99 (2012). Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
DOI: 10.1520/D1830-17. 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D1830 − 17
3.1.2 thermal life, n—the time necessary for a specific vibration, are able to cause failures after the material has been
property of a material, or simple combination of materials, to weakened by thermal degradation.
degrade to a defined end point when aged at a specific
5.2 Electrical insulation is
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D1830 − 99 (Reapproved 2012) D1830 − 17
Standard Test Method for
Thermal Endurance of Flexible Sheet Materials Used for
1
Electrical Insulation by the Curved Electrode Method
This standard is issued under the fixed designation D1830; 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 U.S. Department of Defense.
1. Scope
1.1 This test method provides a procedure for evaluating thermal endurance of flexible sheet materials by determining dielectric
breakdown voltage at room temperature after aging in air at selected elevated temperatures. Thermal endurance is expressed in
terms of a temperature index.
1.2 This test method is applicable to such solid electrical insulating materials as coated fabrics, dielectric films, composite
laminates, and other materials where retention of flexibility after heat aging is of major importance (see Note 4).
1.3 This test method is not intended for the evaluation of rigid laminate materials nor for the determination of thermal endurance
of those materials which are not expected or required to retain flexibility in actual service.
1.4 The values stated in acceptable metric units are to be regarded as the standard. The values in parentheses are for information
only.
1.5 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use. For a specific hazard statement, see 10.1.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at
Commercial Power Frequencies
D374 Test Methods for Thickness of Solid Electrical Insulation (Metric) D0374_D0374M
D5423 Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation
3
2.2 Institute of Electrical and Electronics Engineers Publications:
IEEE No. 1 General Principles for Temperature Limits in the Rating of Electrical Equipment
IEEE No. 101A Guide for the Statistical Analysis of Thermal Life Test Data (including Appendix A)
2.3 IEC Publications:
4
IEC 216 Guide for the Determination of Thermal Endurance Properties of Electrical Insulating Materials (Parts 1 and 2)
3. Terminology
3.1 Definitions:
1
This test method is under the jurisdiction of ASTM Committee D09 on Electrical and Electronic Insulating Materials and is the direct responsibility of Subcommittee
D09.01 on Electrical Insulating Products
Current edition approved Jan. 1, 2012Nov. 1, 2017. Published January 2012December 2017. Originally approved in 1961. Last previous edition approved in 20052012
as D1830 – 99 (2005).(2012). DOI: 10.1520/D1830-99R12.10.1520/D1830-17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE), 445 Hoes Ln., P.O. Box 1331, Piscataway, NJ 08854-1331.
4
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D1830 − 17
3.1.1 temperature index, n—a number which permits comparison of the temperature/time characteristics of an electrical
insulating material, or a simple combination of materials, based on the temperature in degrees Celsius which is obtained by
extrapolating the Arrhenius plot of life versus temperature to a specified time, usually 20 000 h.
3.1.2 thermal life, n—the time necessary for a specific property of a material
...
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
Designation: D1830 − 17
Standard Test Method for
Thermal Endurance of Flexible Sheet Materials Used for
1
Electrical Insulation by the Curved Electrode Method
This standard is issued under the fixed designation D1830; 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 U.S. Department of Defense.
1. Scope 2. Referenced Documents
2
1.1 This test method provides a procedure for evaluating 2.1 ASTM Standards:
thermal endurance of flexible sheet materials by determining D149 Test Method for Dielectric Breakdown Voltage and
dielectric breakdown voltage at room temperature after aging Dielectric Strength of Solid Electrical Insulating Materials
in air at selected elevated temperatures. Thermal endurance is at Commercial Power Frequencies
expressed in terms of a temperature index. D374 Test Methods for Thickness of Solid Electrical Insu-
lation (Metric) D0374_D0374M
1.2 This test method is applicable to such solid electrical
D5423 Specification for Forced-Convection Laboratory Ov-
insulating materials as coated fabrics, dielectric films, compos-
ens for Evaluation of Electrical Insulation
ite laminates, and other materials where retention of flexibility
2.2 Institute of Electrical and Electronics Engineers Publi-
after heat aging is of major importance (see Note 4).
3
cations:
1.3 This test method is not intended for the evaluation of
IEEE No. 1 General Principles for Temperature Limits in the
rigid laminate materials nor for the determination of thermal
Rating of Electrical Equipment
endurance of those materials which are not expected or
IEEE No. 101A Guide for the Statistical Analysis of Ther-
required to retain flexibility in actual service.
mal Life Test Data (including Appendix A)
1.4 The values stated in acceptable metric units are to be
2.3 IEC Publications:
regarded as the standard. The values in parentheses are for IEC 216 Guide for the Determination of Thermal Endurance
information only.
Properties of Electrical Insulating Materials (Parts 1 and
4
2)
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
3.1 Definitions:
priate safety, health, and environmental practices and deter-
3.1.1 temperature index, n—a number which permits com-
mine the applicability of regulatory limitations prior to use.
parison of the temperature/time characteristics of an electrical
For a specific hazard statement, see 10.1.
insulating material, or a simple combination of materials, based
1.6 This international standard was developed in accor-
on the temperature in degrees Celsius which is obtained by
dance with internationally recognized principles on standard-
extrapolating the Arrhenius plot of life versus temperature to a
ization established in the Decision on Principles for the
specified time, usually 20 000 h.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
1
This test method is under the jurisdiction of ASTM Committee D09 on Standards volume information, refer to the standard’s Document Summary page on
Electrical and Electronic Insulating Materials and is the direct responsibility of the ASTM website.
3
Subcommittee D09.01 on Electrical Insulating Products Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE),
Current edition approved Nov. 1, 2017. Published December 2017. Originally 445 Hoes Ln., P.O. Box 1331, Piscataway, NJ 08854-1331.
4
approved in 1961. Last previous edition approved in 2012 as D1830 – 99 (2012). Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
DOI: 10.1520/D1830-17. 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D1830 − 17
3.1.2 thermal life, n—the time necessary for a specific vibration, are able to cause failures after the material has been
property of a material, or simple combination of materials, to weakened by thermal degradation.
degrade to a defined end point when aged at a specific
5.2 Electrical insulation is effective in electrical equipment
temperature.
only as long as it retains its physical and electrical integrity.
3.1.3 t
...
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