... frequency resonance type√ Test both cable and GIS with different inductor connections√ Creative design, High Voltage Tester not only one instrument ... Power Supply, 60kW/380V,1 piece, about 150Kg√ High Voltage Inductor,320KVA/160KV,4 PCS, about 500Kg one piece√ High Voltage ... ,60 minutes, Over Voltage 110% 60 seconds( For single HV inductor,over voltage 120% 60 second, for whole set, over voltage ...