MAJ K3125

SKU: MAJ K3125

BRAND: Major Tech

Digital Insulation Testers • 500V-5000V Voltage Ranges • 2 Built-In Timers • Auto Discharge • Polarization Index


 The K3125 is microprocessor controlled and is capable of performing tests from 500V up to 5000V, and will automatically discharge the circuit after the test has been completed. The meter is a battery powered instrument and operates on a simple and clear basis. The K3125 has the capabilities of being a diagnostic tool and is intended for testing insulation on Rotating Machines, Transformers, Cables, High Voltage Generators, Electrical Circuits and Surge Arresters. These readings are displayed on the large LCD display with a bargraph together with the actual output voltage thus making it easy for the user to read the results. Once the meter test is completed it will automatically discharge the apparatus under test and indicate the discharge voltage on the display while the meter is still on.



  • Measures DC Voltage in 500V, 1000V, 2500V and 5000V
  • Large LCD Display with bargraph and backlight
  • Polarization index measurement (PI)
  • Indication of output voltage and discharge voltage
  • Insulation resistance up to 1000GΩ
  • Withstand Voltage test up to 5320V
  • Auto discharge function and voltage output warning
  • Measuring time up to 10 Hours
  • Live circuit warning symbols plus audible warning
  • 2 Built-In Timers
  • Auto power off and battery check