HV Equipment

5478 TΩ Meter


The 5478 TΩ Meter is a digital multipurpose tester intended for testing, analyzing, inspecting, and maintaining high voltage insulation. The instrument offers a complete set of functions to measure and detect effectively all parts of current in an insulation system. The instrument can supply an output power of 5 W and a test voltage of up to 5000 V and therefore is capable of resistance measuring up to 5 TΩ.


  • Measuring range up to 5 TΩ
  • Programmable test voltages 250 V to 5 kV
  • Capacitance measurement up to 50 µF
  • Programmable timer 1 s to 30 min.
  • 5 test voltage steps automatically set within selected test voltage range
  • High resolution voltage ramp (20 V per step)
  • Leakage current measurement
  • Programmable threshold current 1 µA to 1.4 mA 
  • Voltage and frequency measurement up to 600 V AC/DC, 45 - 65 Hz
  • Diagnostic measurements of discharge current, voltage, and capacitance
  • Calculation of polarization index and dielectric discharge ratio

DATA SHEET:     5478 TΩ Meter

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