... cables,transformer Very Low Frequency Tester for High Voltage Cable 80KVProduct DescriptionAC testing of cables and electrical apparatus is ... additional protective resistor connected outside.Technical parameters:1. Output voltage ratings: 30KV, 40KV, 50KV, 60KV, 70KV, 80kV (peak)2. ... is now possible for utilities etc to test at site cable etc with AC voltage using a small, lightweight, economical ...