Conseil national de recherches du Canada. Science des mesures et étalons
AC current measurement; calibration; current comparator; current transformer; measurement uncertainty
A comparison of two systems based on different methods for calibration of current transformers at several different transformation ratios, burdens, and power frequencies of 60 Hz and 50 Hz is performed at the National Research Council of Canada. The obtained discrepancies in ratio and phase errors are within 5 μA/A and μrad, respectively, for small test currents and less for larger test currents.
Date de publication
IEEE Transactions on Instrumentation and Measurement66, nº 6 : 1628–1635.