The High Voltage PFT-503CM is a member of the series of 50/60 Hz Portable AC Hipot Testers which are applicable for a variety of Field and General Repair Shop HV testing applications. They are ideal for testing the integrity of a wide variety of items including insulating materials, isophase bus duct, switchgear, transformers, vacuum bottles and interrupters, vacuum switches, automatic circuit reclosers, bushings, fuses, arrestors, circuit breakers, transformers, capacitors and motor and generator windings. The PFT Series operate from a conventional electrical source and are applicable for testing to ANSI/IEEE C37.60. All models are fully adjustable and can be used up to their 3 kVA rating with ease. Each unit features a dual range kilovoltmeter, a triple range currentmeter, external safety interlock, zero start safety interlock, self resetting over current protection, guard/ground return modes, HV on/off and main power push buttons and ruggedized meters.