DMI 551 - Digital Universal Measuring Instrument

Additional Product Information

Features & Benefits


  • AC voltage measurement by capturing rms, peak and peak/√2 values
  • DC voltage measurement and evaluation of mean value and ripple factor.
  • Impulse voltage measurement by capturing peak values of lightning or switching impulses.
  • Impulse current measurement by acquiring the voltage across a current shunt.
  • Triggering of generator and chopping gaps and any other measuring device.
  • Flash detection of AC and DC flashovers. The generator can automatically be stopped from recharging.
  • Remote control to operate the unit from a computer or a laptop.
  • Plotter output for recording of AC and DC voltages on an external X-Y graph recorder.


  • Easy to operate:  Large LCD screen, case sensitive softkeys and special function keys reduce setup time and ensure intuitive and safe handling.
  • Simple to upgrade: Software codes are used for activating the individual measuring modes. Uninstallation, transportation, and reinstallation gets therefore superfluous.
  • Manual re-evaluation tool for all impulse parameters.
  • Accurate and reliable: Well established hardware and extensively tested software allows meaningful and credible measurements.
  • Customized solution: Due to the flexibility of the DMI 551 many HV measuring applications can be covered with this single device. Cost effective investments are therefore guaranteed.

High Voltage Measurements during

  • Transformer Testing
  • Switchgear Testing
  • Surge Arrester Testing
  • Research & Development
  • IEC 60060-2