The 727/103.3 High Voltage AC Insulation Tester is a general purpose unit that is programmed via the RS-232-C Interface with needed parameters such as voltage, current, test time, and rate of rise. The controller initiates the test and when completed, the tester responds via a service request with the test results. The unit is GPIB/IEEE-488 compatible, has arc detection and zero crossing high voltage control. " AC Voltage: 100 to 3000 Vac " AC Current: 0 to 5.00 mA