Motor Transformer Test Meters

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.
 
Features:

• 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