... ,Unlike DC test, 0.1HZ Digital Very-low-Frequency High Voltage TesterThe new generation of AC withstand tester, ... equipments such as generator, cable, insulator, power capacitor, large transformer etc. Not only can it be ... strengthen the load-bearing capability.Technical parameters:1. Output voltage ratings: 30KV, 40KV,50KV,60KV,70KV, 80kV, ... +4512A 0.1HZ Digital Very-low-Frequency High Voltage Tester