0.1HZ Digital Very-low-Frequency High Voltage Tester 1,Small volume, light weight, easily ... Frequency High Voltage TesterThe new generation of AC withstand tester, replacing harmonic withstand tester, is widely used in AC withstand test ... the load-bearing capability.Technical parameters:1. Output voltage ratings: 30KV, 40KV,50KV,60KV,70KV, 80kV, ... Digital Very-low-Frequency High Voltage Tester