Tap Changer Analyzer & Winding Ohmmeter RMO-TT

  • On-load tap changer dynamic resistance measurement
  • Three resistance measurement channels
  • Four temperature measurement channels
  • Vibration measurement
  • Automatic resistance/temperature measurement for the Heat Run test
  • Rapid automatic demagnetization
  • Tap changer motor current monitoring channel
  • Automatic discharge circuit
  • Three models: RMO40TT, RMO60TT, RMO100TT

The Tap Changer Analyzer & Winding Ohmmeter of the RMO-TT series is designed for winding resistance measurement of inductive objects, and for a tap changer analysis. The RMO-TT series is based on the state of the art technology, using the most advanced switch mode technology available today. The RMO-TT instruments are accurate (0,1%), powerful (up to 100 A) and still portable. The Instruments generate a true DC ripple free current with automatically regulated measurement and discharging circuit.
RMO-TT instruments can perform a simple, quick and reliable transformer on-load tap changer condition assessment. This series of instruments enable measurements of a winding resistance in every tap position, current ripple values (percentage of a current drop during a tap change) and transition times during the tap changes. Problems with a connection, contacts, and selector/diverter switch operation (tap change with interruption) can be detected with these measurements.


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