... , suitable for 10 kV / 20 kV overhead powe PGS-ASS user boundary load switch load switch by using segmentation is horizontal ... kV / 20 kV overhead power distribution lines, branch lines and user terminal line, with the over current, over voltage, under voltage ... .4 V, precision steady at 1.0%. Serial numbersignalPGS-A user boundary load switch1Telemetry signals.Current (A, B, and C is ...