T&D World Magazine
Transformer Tester Designed for CT Testing

Transformer Tester Designed for CT Testing

The EZCT-2000B is Vanguard's third generation microprocessor-based current transformer test set. Designed specifically for CT testing, the EZCT-2000B has the following outstanding features that can greatly increase productivity and save time during the commissioning stage of circuit breakers and transformers:

  • Performs CT excitation, current-ratio, polarity, and phase angle tests
  • Measures insulation resistance and winding resistance of the CT secondary windings
  • Measures the CT's secondary burden
The EZCT-2000B test leads can be connected to all of the CT output terminals, and the complete CT test can be performed automatically without operator intervention.

The CT saturation test is performed using the ANSI/IEEE C57.13.1 test method. The output voltage ranges from 50Vac to 2000Vac, and the current ranges from 1A to 10Amps.

The EZCT-2000B has a programmable current source (0-20A, 0-15Vac) which can be used to verify CT loads. The on-time timer and output current are displayed on the LCD screen.

This unit stores up to 140 test records (10 tests per record) and 128 CT test plans. Test records and test plans can be transferred to a PC using the RS-232 port, USB port, and USB Flash Drive port.

Duke Energy and Southern California Edison discovered that the EZCT-2000B is more reliable and accurate because it can output up to 10 amps for saturation and knee-point readings
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