The Motwane IT-51 is a microprocessor based Digital Insulation tester designed for testing of all types electrical installation like transformers, switchgear, motors, generators and utility substation equipment’s. The instrument automatically performs Polarization index by selecting PI mode. IT-51 has a large LCD blue backlit display, it shows leakage current in scrolling form along with IR value and PI value. It is rechargeable battery operated and AC mains provision for battery charging.

Enquiry Brochure


  • Selectable test voltage 250V, 500V, 1000V, 2500V, 5000V.
  • Insulation Resistance measurement up to 1TΩ
  • Short circuit current ≤ 1.4mA
  • Mains & battery operation
  • Polarization Index measurement facility
  • AC/DC voltage measurement up to 600V.
  • Two Programmable timer from 0 Sec to 99 minutes.
  • Liquid Crystal Display with pleasant white backlight.
  • Internal rechargeable Battery.
  • Guard terminal to minimize the surface leakage
  • Safety - IP 54, CAT IV 600V and CE conformity


Standard Accessories
  • 3 x 3m Test lead with large alligator clip
  • Mains Cord
  • Instruction Manual
  • Calibration Certificate
  • Carry Case
Optional Accessories
  • 3 x 10m Test lead with large alligator clip