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High Voltage (HVI) PFT-503CM: AC Portable Hipot Tester


The High Voltage (HVI) PFT-503CM Portable AC Hipot Tester is ideal for a variety of Field and General Repair Shop HV testing applications, such as transformers, vacuum bottles and interrupters, switchgear, motorized vacuum switches, automatic circuit reclosers, bushings, fuses and arrestors.

SKU: hvi-pft-503cm Categories: , , ,

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The High Voltage PFT-503CM Portable AC Hipot Tester is ideal for a variety of Field and General Repair Shop HV testing applications

The PFT Series operates from a standard 120V source and incorporates capacitve compensation which allows a 3kVA test load to be tested with only 1kVA of input power.

These hipots provide continuously adjustable AC voltage used for a pass/fail, AC over-voltage withstand test on high voltage apparatus, like switchgear, circuit breakers, reclosers, vacuum bottles, hot sticks, bus duct, and any other apparatus needing an AC test voltage. The PFT Series offers the most field portable, affordable, and easiest to operate AC hipots at this voltage and power. A gapped core transformer for up to 3 kVA of output power with the draw of only 1.5 kVA so the hipot can be powered by a standard 120Vac or 230Vac input. Equipped with a two-range voltmeter, three-range current meter and guard circuit for precise leakage current measurements. For bench-top requirements see the ABT Series. Testing loads that require higher power, see our ALT, FPA, HPA and PAR lines of AC dielectric test sets.

  • Convenient one-piece field portable design
  • Secondary connected 2 Range Voltmeter: 0 – 25 / 50 kV AC
  • 3 Range Current Meter: 0 – 1 mA AC with x1, x10, and x100 multipliers
  • Fixed overload set to 120% of variable transformer rated output current
  • Transit protected meters prevent meter damage between test sites
  • Guard/Ground circuit for accurate leakage current measurement
  • 20 ft shielded output and return cables
  • Gapped core transformer design for capacitive load compensation
  • Zero Start and External safety Interlock provisions


Model PFT-503CM / PFT-503CMF
Input: (PFT-503CM) 120 V, 60 Hz, 15 A
(PFT-503CMF) 230 V, 50/60 Hz, 8 A
Output: 0-50 kV AC, 1 kVA resistive load
3 kVA capacitive load, up to 60 mA current
Output current is reduced at lower voltages
Duty: 3 kVA: ½ hour ON, 2 hours OFF
2 kVA: 1 hour ON, 1 hour OFF
1 kVA: continuous
Voltmeter: 3.5”, scaled 0-25/50 kV AC, ±2% F.S.
Current Meter: 3.5”, scaled 0-1 mA, ±2% F.S. with range multipliers of x1, x10, x100
Distortion: Less than 5%
Size & Weight
(W x D x H)
21 x 11.25 x 15.25 in., 75 lb.
534 x 286 x 387 mm, 34 kg
Output Termination 20 ft. (6 m) shielded output cable with alligator clamp
Scope of Supply 20ft black ground lead, 20ft shielded return cable, external
interlock plug, operations manual, calibration certificate


Equipment Specifications

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