Motor Transformer Test Meters

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The DTR ® is designed with operator safety in mind. Tests are performed at low voltage and, unlike other ratiometers, step-down excitation is employed. This method, in conjunction with an integral H/X reverse protection circuit, guards against the generation of hazardous test voltages normally associated with other transformer ratio measurement instruments.
The DTR ® is fully automatic and uses the IEEE C57.12-90 ™ -2006 test method. No user calibration, range selection, hand cranking or tedious balancing is required. At each measurement, the DTR ® automatically checks for open windings, connections, circuit breakers, short circuits (excess excitation current), incorrect test lead placement, and reverse polarity. Measurements are displayed quickly and accurately.
  • Measures power transformers, VT/PTs and current transformer CT turns ratios
  • Displays turn ratio, excitation current, winding polarity and % deviation from the nameplate values
  • Universal voltage (90-240V supply, 50-60Hz) via external smart/fast battery charger; complete charge in less than 4 hours
  • Internal NiMH battery packs provide up to 10 hours of continuous operation
  • Tests performed by exciting the primary and reading the secondary; provides safer conditions for the operator
  • Display warns of incorrect lead connection, reverse polarity, open and short circuits
  • Easy connection and test setup; no calibration or balancing required
  • Large dual display with adjustable contrast ensures clearer visibility in any lighting environment day or night

Constructed using only the highest quality electrical and mechanical components, the DTR ® sets the standard in advanced design, engineering and workmanship, and it will provide the user with years of accurate and reliable measurements and hassle free test report printouts

Need help to select the “right tool for the right job”?  Our Experienced, Friendly Staff is available to take your Call – 503-406-4373, or fill out the contact us form, and one of our Sales Engineers will call you back to discuss your application needs.