KEW3128 12KV (High Current) Insulation Tester

Product Information


  • Microprocessor controlled high voltage insulation resistance tester with Diagnostic functions.
  • Suitable for analyzing the insulation characteristics of cables, transformers, motors, generators, high-pressure switches, insulators, wiring installations, etc.
  • High current for fast testing even with large capacitive circuits. 5mA short circuit test current.
  • Measures insulation resistance up to 35TΩ and has large graphic display
  • Memory and logging functions comes with dedicated application software
  • Filter function and capacitance and leakage measurements
  • Polarisation Index, Dielectric discharge, Dielectric Absorption, Step voltage measurement


  • 6 ranges: 500V, 1000V, 2500V, 5000V, 10000V, 12000V. Fine adjustment of voltage setting at each range is also possible.
  • Graphic representation of the insulation resistance and leakage current versus time on large display with bar graph and backlight.
  • Can be operated from built-in rechargeable battery or from AC line.
  • Automatic discharge after test with monitoring of the discharge voltage.
  • Internal memory can store about 40,000 data (max).
  • Robust design for field use with IP64 rating (with lid closed). 


  • 7226 (Line probe)
  • 7227 (Line probe with alligator clip)
  • 7224 (Earth cord)
  • 7225 (Guard cord)
  • 7170 (Main cord)
  • 8029 (Extension prod)
  • 8212-USB-W (USB adaptor with KEW Windows(Software))
  • Instruction manual
  • Calibration Certificate


  • Weight: 9kg approx. (including battery)*
  • Dimmensions: 330(L) × 410(W) × 180(D)mm* 

*Instrument and hard case