Dielectric Constant and Dispersion Factor Test

Material Testing

Dielectric Constant and Dispersion Factor Test

Dielectric Constant (DC) and Dispersion Factor (DF)

ASTM D150, IEC 60250

The Dielectric Constant is used to determine the ability of an insulator to store electrical energy. The dielectric constant is the ratio of the capacitance induced by two metallic plates with an insulator between them, to the capacitance of the same plates by air or vacuum between them.

Dielectric Constant and Dispersion Factor Test

The propagation factor is defined reciprocally the ratio to the resistance of the insulation materials at a certain frequency between capacitive reactance. It measures the inefficiency of an insulating material. If a material is strictly to be used for insulation, it will be better to have a lower dielectric constant.

Dielectric Constant and Propagation Factor - Relative dielectric constant; For practical purposes, it is the ratio of the capacitance of the two electrode assemblies, separated by the insulation material of a plastic, to the capacitance when the electrodes are separated by air (ASTM D150-59T).

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