R. Sasdelli et al., A DIGITAL INSTRUMENT FOR THE CALIBRATION OF CURRENT-TO-VOLTAGE TRANSDUCERS, IEEE transactions on instrumentation and measurement, 47(1), 1998, pp. 189-194
Modern instrumentation for the monitoring of electrical power systems
is based on digital signal processing (DSP) techniques. If suitable de
sign choices are made, the overall accuracy of this kind of instrument
ation basically depends on the signal conditioning circuits. They have
outputs proportional to the input to drive the A/D converters and are
very often based on instrument transformers to ensure the isolation b
etween the instrumentation and the monitored power system. This paper
presents a lab prototype of a digital instrument for the calibration o
f current-to-voltage transducers (CVT's) and discusses its performance
, The results of calibration tests performed on some commercial active
and passive CVT's are also reported.