Self-calibration of the current comparator with common ground

Abstract

A method to measure the phase angle errors and amplitude errors of the current comparators with ratio of 2:1, 5:1 and 10:1 has been described. The method is based on the use of the differential current transformer to determine the current relationship of the current comparator. The measurements have been done at frequencies from 10 kHz to 100 kHz, and the results are presented.