ElectroTest ITS Integrated Test System with 1000A current module and 60kVdc Hipot. The Model ITS control unit by itself has been designed to conveniently and accurately calibrate and test simple over-current relays, voltage relays, and other protective devices. The test set is capable of supplying 20A for 2 minutes, and 50A momentarily, AC or DC. Output voltage is adjustable to 140 VAC and 124 VDC.