Automatic Turns Ratio Instrument

Automatic Turns Ratio Instrument


Uma Electronics Enterprises, an ISO 9001: 2008 certified company, offers Automatic Turns Ratio Instrument, Model ATRI-3. Uma Electronics Enterprises, incorporated in 2008, is a leading manufacturer of three phase VAF meters, single phase ammeters, digital voltmeters, VIW meters, digital wattmeters, digital power factor meters, digital frequency meters, single phase meters, double voltage frequency meters, automatic motor testing systems, transformer testing benches, automatic pump testing systems, smart transformer testing benches, etc. The company has highly qualified and experienced engineers, who work in the versatile domain of analog circuits, electrical systems, instrumentation and automation, embedded systems and software which enables them to convert an idea into implementation on time, and according to market requirements.

  • Fully automated measurement of turns ratio, excitation current, HT and LT voltages, polarity and percentage deviation
  • Three phase connection enables simpler and faster testing
  • Accuracy – DSP based measurement with high resolution 24-bit ADC ensures class 0.1 accuracy
  • Test voltage is provided through on/off switch, thus ensuring safety of personnel and instrument
  • Fuse protection – fuse is provided to take care in case of shorted winding
  • Saving data – data can be saved with date, time and serial number in SD memory card

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