Insulation Tester
Fluke 1537

Perform quick and accurate insulation resistance testing with advanced features including linear voltage, polarization index, dielectric absorption ratio, and insulation breakdown testing.

  • Automatically calculate polarization index (PI) and dielectric absorption ratio (DAR)
  • Conduct digital insulation testing with analog bar graph display
  • Automatically calculate insulation breakdown (DD)


  • Combiner boxes
  • Inverter boxes