Electrical safety testing, and Hipots in particular, are essential to maintaining proper insulation performance. AC Hipot testing employs a voltage source that is continually changing its voltage in order to test the efficiency of insulation. A high voltage is applied to the test conductor, and the resulting leakage current is measured to determine insulation resistance. AC current flows easily through the capacitator, meaning the test voltage applied to the test conductor is lower relative to DC Hipot testing. However, more power is required to conduct an AC Hipot test, because at 60 Hz, the capacitive reactance is low. Advanced Test Equipment Rentals carries AC Hipot testers from manufacturers like Chroma, Associated Research, Vitrek, and more.