Hi-pot Tester for Miniature Motors

Hi-pot tester is a stand-alone insulation testing system that performs AC Hi–pot, DC Hi-pot, and insulation test on various miniature motors like permanent magnet DC (PMDC) motors, brushless DC (BLDC) motors, unipolar stepper motors, bipolar stepper motors, and AC synchronous motors.
The speciality of this tester is that the hi-pot and insulation tests can be performed while the motor is in running condition. This helps in identifying the polar insulation defects.


  • Test voltage – from 200 V to 5 kV
  • Frame sizes – from size 15 to size 45
  • Speed control – from 5 RPM to 400 RPM
  • Test settings – voltage AC/DC and insulation


  • Leakage current
  • Insulation resistance
  • Polarization index
  • Absorption index


  • PLC and HMI based system

Test Fixture

  • Custom designed test fixture that is suitable for motors of various shapes and sizes.


  • Type-4 safety curtain and other interlocks
  • Rejection bin poka-yoke

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