Current sensor is an important element for on line PD monitor of electric power equipment and its transfer characteristic has a direct influence on PD measurement.
Using zero compensating line of two direct-current amplifiers as a reference line was suggested.
建议用两路直流放大器的零补偿线作为参考线。
3
Two Critical concepts involved in directcurrent ice-melting technique of high voltage over head line, the least ice-melting current and the Max allowed current was presented.