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Conducting a Stress Test on Insulators with the PFT-301 AC Hipot

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An AC hipot test determines bad spots in insulations of electrical components by injecting a voltage higher than the rating of the device and holds it for a certain duration. A good insulator will hold a test voltage 2-3 times higher than its rating while a bad insulator will cause a rise in leakage current and cause the insulation to breakdown.


The High Voltage PFT-301CM AC hipot is a compact and reliable tester that has a variable output voltage of up to 30 kilo Volts. It features an external safety interlock, zero start safety interlock, guard return mode, high voltage on/off button, main power buttons and a meter with a glass window to prevent the build up of static electricity. . It has a built-in Kilo Voltmeter ranging from 0-30 kilo Volts and a current meter with a range of 0-40 milli amperes AC. This tester is ideal for testing overhead devices, interrupters, vacuum bottles, motorized vacuum bottles, motors and other electrical components

If you are interested in renting the High Voltage PFT-301CM AC hipot, consider Protec Equipment Resources. We offer hipot testers and other high voltage test equipment. Give us a call and get a quote on test equipment rental.