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DISSIPATION FACTOR, POWER FACTOR, AND …
DISSIPATION FACTOR, POWER FACTOR, ANDRELATIVE PERMITTIVITY (DIELECTRIC CONSTANT)By GrayTransformer Chemistry ServicesBackground:There is a relationship between the DISSIPATION factor, the POWER factor, and the permittivity or dielectricconstant. They all relate to the dielectric losses in an insulating fluid when used in an alternating electricfield. The permittivity is represented as a complex quantity in the following manner: e* = e'- j e" ; wheree* is the complex permittivity, e' is the real or measured permittivity, and e" is the imaginary the presence of an alternating field there is created a capacitance current and a resistive current that are90o out of phase with respect to each other.
Testing In Service Transformer Oil (R outine Monitoring Tests) When insulating fluid is subjected to an AC current, there are dielectric losses, which cause two effects.
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