An absolute method for determining the dissipation factor of capacitors at voltages up to 1 kV

摘要

An absolute method for determining the dissipation factor (DF) of a capacitor connected to a series resistor without the use of a reference capacitor with a known DF is described. The principle of the absolute measurement is based on the “elimination” of DF value of a reference capacitor by subtracting reading values from two successive measurements. This method was applied to the calibration of DF within a range of 1 × 10-5 to 1 × 10-2 at voltages up to 1 kV The verification of this method was confirmed by comparing the obtained values of DF with that measured by a known calibrated multi-frequency capacitance meter.