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Last Updated: Dec 31, 2010
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ASTM D4872-99(2004)e1
Standard Test Method for Dielectric Testing of Wire and Cable Filling Compounds
Standard Test Method for Dielectric Testing of Wire and Cable Filling Compounds
D4872-99R04E01
ASTM|D4872-99R04E01|en-US
Standard Test Method for Dielectric Testing of Wire and Cable Filling Compounds
Standard
D4872 Standard Test Method for Dielectric Testing of Wire and Cable Filling Compounds>
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Significance and Use
Dissipation factor, permittivity and dc volume resistivity are properties of communication cable fillers and filler components that are controlled in order that the cable’electrical performance falls within its design limits. Relatively small amounts of contaminants, such as polar compounds, water or salts, degrade the cable’electrical properties. Limits on the dielectric properties of the cable filling compound are usually specified by the cable manufacturer, by industry standards or both.
Scope
1.1 This test method covers the determination of dissipation factor, permittivity (dielectric constant) and ac volume resistivity of wire and cable filling compounds and related materials that are solid at room temperature, but capable of being melted at elevated temperature.
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.
1.2 Whenever two sets of values are presented, in different units, the values in the first set are the standard, while those in parentheses are for information only.