ASTM D1531-01e1

Standard Test Methods for Relative Permittivity (Dielectric Constant) and Dissipation Factor by Fluid Displacement Procedures

SCOPE
1.1 These test methods provide techniques for the determination of the relative (Note 0) permittivity and the dissipation factor of solid insulating materials by fluid (Note 0) displacement. In common usage, the word "relative" is frequently dropped.
Note 0
The word "fluid" is a commonly used synonym for "liquid'' and yet a gas is also a fluid. In these test methods the words fluid and liquid appear as synonyms, but the word fluid is also used to show that liquid is not all that is meant.
1.2 Test Method A is especially suited to the precise measurements on polyethylene sheeting at 23C and at frequencies between 1 kHz and 1 MHz. It may also be used at other frequencies and temperatures to make measurements on other materials in sheet form.
1.3 Test Method B is limited to the frequency range of available guarded bridges. It is especially suited to measurements on very thin films since it does not require determination of the thickness of the specimen. The test method provides an estimate of the thickness of thin films which is more accurate and precise than thickness measurements obtained by other means.
1.4 Test Method B is also useful for measurements of polymer sheeting up to 2 mm thickness.
1.5 These test methods permit calculation of the dissipation factor of the specimens tested.
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. For a specific precautionary statement, see .
1.6 The values stated in SI units are to be regarded as the standard.

General Information

• Status: Historical
• Publication Date: 09-Mar-2001
• ICS: 83.080.20 - Thermoplastic materials
• Technical Committee: D09 - Electrical and Electronic Insulating Materials
• Drafting Committee: D09.12 - Electrical Tests

Relations

• Replaces: ASTM D1531-01 - Standard Test Methods for Relative Permittivity (Dielectric Constant) and Dissipation Factor by Fluid Displacement Procedures
• Effective Date: 10-Mar-2001
• Replaced By: ASTM D1531-06 - Standard Test Methods for Relative Permittivity (Dielectric Constant) and Dissipation Factor by Fluid Displacement Procedures (Withdrawn 2012)
• Effective Date: 01-Oct-2006
• Referred By: ASTM D150-22 - Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
• Effective Date: 10-Mar-2001
• Referred By: ASTM D4101-17e1 - Standard Classification System and Basis for Specification for Polypropylene Injection and Extrusion Materials
• Effective Date: 10-Mar-2001
• Referred By: ASTM D1248-16 - Standard Specification for Polyethylene Plastics Extrusion Materials for Wire and Cable
• Effective Date: 10-Mar-2001
• Referred By: ASTM D2305-18 - Standard Test Methods for Polymeric Films Used for Electrical Insulation
• Effective Date: 10-Mar-2001
• Referred By: ASTM D4976-12a(2020) - Standard Specification for Polyethylene Plastics Molding and Extrusion Materials
• Effective Date: 10-Mar-2001

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
e1
Designation:D1531–01
Standard Test Methods for
Relative Permittivity (Dielectric Constant) and Dissipation
1
Factor by Fluid Displacement Procedures
This standard is issued under the fixed designation D1531; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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
e NOTE—Adjunct references were corrected editorially in April 2006.
1. Scope priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For a specific
1.1 These test methods provide techniques for the determi-
precautionary statement, see 7.2.
nation of the relative (Note 1) permittivity and the dissipation
1.7 The values stated in SI units are to be regarded as the
factor of solid insulating materials by fluid (Note 2) displace-
standard.
ment.
NOTE 1—In common usage, the word “relative” is frequently dropped. 2. Referenced Documents
NOTE 2—The word “fluid” is a commonly used synonym for “liquid’’
3
2.1 ASTM Standards:
and yet a gas is also a fluid. In these test methods the words fluid and
D150 Test Methods for AC Loss Characteristics and Per-
liquid appear as synonyms, but the word fluid is also used to show that
mittivity (Dielectric Constant) of Solid Electrical Insula-
liquid is not all that is meant.
tion
1.2 Test Method A is especially suited to the precise
D374 Test Methods for Thickness of Solid Electrical Insu-
measurements on polyethylene sheeting at 23°C and at fre-
lation
quencies between 1 kHz and 1 MHz. It may also be used at
D6054 Practice for Conditioning Electrical Insulating Ma-
2
other frequencies and temperatures to make measurements on
terials for Testing
other materials in sheet form.
D831 Test Method for Gas Content of Cable and Capacitor
1.3 Test Method B is limited to the frequency range of
Oils
available guarded bridges. It is especially suited to measure-
D924 TestMethodforDissipationFactor(orPowerFactor)
mentsonverythinfilmssinceitdoesnotrequiredetermination
and Relative Permittivity (Dielectric Constant) of Electri-
of the thickness of the specimen. The test method provides an
cal Insulating Liquids
estimate of the thickness of thin films which is more accurate
D1711 Terminology Relating to Electrical Insulation
and precise than thickness measurements obtained by other
E1 Specification forASTM Liquid-in-GlassThermometers
means.
2.2 ASTM Adjuncts:
1.4 Test Method B is also useful for measurements of
4
Measuring cell (three drawings)
polymer sheeting up to 2 mm thickness.
1.5 These test methods permit calculation of the dissipation
3. Terminology
factor of the specimens tested.
3.1 Definitions—Definitions are in accordance with Termi-
1.6 This standard does not purport to address all of the
nology D1711.
safety concerns, if any, associated with its use. It is the
3.2 Description of a Term Specific to This Standard:
responsibility of the user of this standard to establish appro-
3.2.1 compatibility, n—A fluid is considered compatible
with a test specimen if, during the time required to complete a
1
These test methods are under the jurisdiction of ASTM Committee D09 on
Electrical and Electronic Insulating Materials and are the direct responsibility of
3
Subcommittee D09.12 on Electrical Tests. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 10, 2001. Published May 2001. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1958. Last previous edition approved in 1995 as D1531–95. Standards volume information, refer to the standard’s Document Summary page on
2
Coutlee, K. G., “Liquid Displacement Test Cell for Dielectric Constant and the ASTM website.
4
Dissipation Factor up to 100 Mc,” 1959 Annual Report, Conference on Electrical Available from ASTM International Headquarters. Order Adjunct No.
Insulation, National Research Council, Publication 756, Washington, DC. ADJD1531. Original adjunct produced in 1961.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D1531–01
testofthespecimeninthefluidatthespecifiedtemperatureand polyethylene compound in order to meet precise requirements
frequency, the calculated permittivity of the specimen does not of high capacitance-uniformity and capacitance-stability in
change by more than 0.1%, and the dissipation factor change electronic apparatus. It also serves as a means to detect
is less than 0.0001. impurities,
...