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Significance and Use
4.1 Permittivity and dissipation factor are sensitive to changes in chemical composition, impurities, and homogeneity. Measurement of these properties is, therefore, useful for quality control and for determining the effect of environments such as moisture, heat, or radiation.
1.1 This test method covers the determination of the relative permittivity (dielectric constant) and dissipation factor of solid dielectrics from 50 Hz to 10 MHz over a range of temperatures from −80 to 500 °C., Two procedures are included as follows:
1.1.1 Procedure A—Using Micrometer Electrode.
1.1.2 Procedure B—Using Precision Capacitor.
Note 1: In common usage the word “relative” is frequently dropped.
1.2 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.
1.3 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
D1711 Terminology Relating to Electrical Insulation
E197 Specification for Enclosures and Servicing Units for Tests Above and Below Room Temperature
ICS Number Code 29.035.30 (Glass and ceramic insulating materials)
UNSPSC Code 32121500(Capacitors)
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ASTM D2149-13(2021), Standard Test Method for Permittivity (Dielectric Constant) and Dissipation Factor of Solid Dielectrics at Frequencies to 10 MHz and Temperatures to 500 °C, ASTM International, West Conshohocken, PA, 2021, www.astm.orgBack to Top