... Voltage Tester 1,Small volume, light weight, easily to operate. 2,Unlike DC test, 0.1HZ Digital Very-low-Frequency High Voltage TesterThe new ... generation of AC withstand tester, replacing harmonic withstand tester, is widely ... load-bearing capability.Technical parameters:1. Output voltage ratings: 30KV, 40KV,50KV,60KV,70KV, ... -low-Frequency High Voltage Tester