Five instruments in one: AC Hipot, DC Hipot, Insulation Resistance, Ground Bond and Leakage Current (Option) Twin-PortTM function (Patent) Programmable output voltage to 5kV AC and 6kV DC Trip current programmable to 40mA AC and 12mA DC Insulation resistance to 50GΩ/1000V DC Ground bond up to 30A (Option up to 40A / 60A) Open/Short check(OSC) (New!!) ARC detection (Hashover)