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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. The vector sum of these two currents represents the totalcurrent and the angle between the capacitance current vector and the resultant total current vector isdefined as the loss angle, d. The ratio of the imaginary to the real part of the permittivity is equal to tan d; tan d= e" / e'.
DISSIPATION FACTOR, POWER FACTOR, AND RELATIVE PERMITTIVITY (DIELECTRIC CONSTANT) By I.A.R. Gray Transformer Chemistry Services Background: There is a relationship between the dissipation factor, the power factor, and the permittivity or dielectric
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