Sample applied voltage: AC1KV~120KV setting requirements, automatic adjustable test transformer: 50KVA sample short circuit, open circuit, stop supplying fire and cut off voltage, and there is a fault prompt. Supply time: 0-999Min. Adjustable leakage current detection device: Real time monitoring of leakage current. Control and adjustment of gas source: Air flow rate is mass flow meter 0-200L/Min, adjustable propane flow rate is mass flow meter 1-20L/Min, adjustable.