The Motwane IT-51B 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-51B has a large LCD pleasant amber backlit display. It is light weight, compact & has Robust ABS body with highly efficient rechargeable battery operation for self-carrying.

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  • Selectable test voltage 250V, 500V, 1000V, 2500V, 5000V.
  • Insulation Resistance measurement up to 1T Ohm
  • Short circuit current ≤ 1.4mA
  • Programmable timer from 0 Sec to 99 minutes.
  • AC/DC voltage measurement up to 600V.
  • Polarization Index measurement facility
  • Auto calibration at every start up.
  • Internal Memory storage of 1000 readings.
  • Safety - IP 54, CAT IV 600V and CE conformity.
  • Highly efficient rechargeable battery operated instrument.
  • USB for Communication with PC.


Standard Accessories
  • 3 X 3m Test leads with Crocodile Clip
  • Battery Charger
  • Instruction Manual
Optional Accessories
  • 3X10m Test leads with Crocodile Clip
  • Software CD
  • USB cable