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Transformer Ratiometers

State of the art and easy to use. These microprocessor-based instruments provide the results quickly with virtually no setup required.

Transformer Ratiometers

AEMC® portable digital transformer ratiometers are designed for on-site testing of power, potential, and current transformers. When connected to a non-energized transformer, they accurately measure primary to secondary turns ratio, while simultaneously displaying polarity, excitation current and % nameplate deviation. At each measurement, they automatically self-calibrate and check for open windings/connections/circuit breakers, short circuits (excess excitation current), incorrect test lead placement, and reverse polarity. Measurements are displayed quickly and accurately.
  • Digital Transformer Ratiometer DTR® Model 8510

    Cat. #2136.50
    Primary to secondary turns ratio, Polarity, Excitation current, Automatic self-calibration
    Digital transformer ratiometer for on-site testing of power, potential, and current transformers. Measures primary to secondary turns ratio, polarity, and excitation current. Automatically self-calibrates and checks for open windings/connections/circuit breakers, short circuits (excess excitation current), incorrect test lead placement, and reverse polarity.

  • Quick Tester Model 8505

    Cat. #2136.51
    Quick integrity tests on transformers/capacitors, Audible and visible indication
    Hand-held instrument for performing quick, basic integrity tests on transformers and capacitors. Verifies transformer winding continuity without requiring full transformer ratio test. Simple, single-button operation with built-in fuse protection.

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AEMC Transformer Ratiometers
TTR, turns ratio,, PT, CT, X1, X2, X3, H1, H2, H3, excitation current, excitation voltage, Nameplate voltage, % deviation
State-of-the-art transformer testing. AEMC portable digital transformer ratiometers detect open windings/connections/circuit breakers, short circuits, incorrect test lead placement, and reverse polarity.