The current in the inductor is measured, and, by applying {HEAD ~ an appropriate constant} of {TAIL ~ proportionality}, the exciting current of the current transformer is determined 
The current in the inductor is measured , and , by applying { HEAD ~ an appropriate constant } of { TAIL ~ proportionality } , the exciting current of the current transformer is determined
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH