in the EPTTR-C ?
General Information:
Turns ratio test is very important in order to find out the transformer has the right ratio corresponding on its rated voltage in primary and secondary. EPTTR-C is three phase, automatically test set specially designed for turns ratio, group test, PT and CT polarity measurements of power, distribution and instrument transformer.

  • ♦ High speed and high accuracy because the total output is three-phase sine inverter, output voltage could adjust automatically, and soft start or soft stop function is equipped.
  • ♦ Include three-phase transformer, single-phase transformer, PT, Z-type transformer turn ratio, group and polarity checking test function.
  • ♦ Blind test function, which is testing transformers turns ratio or group without knowing high or low voltage connection methods.
  • ♦ Angle differences test included in single-phase test.
  • ♦ The maximum testable position of tap position is 197.
  • ♦ The widest test range up to 10000.
  • ♦ High and low voltage reverse connection protection function.
  • ♦ Output short-circuit protection function.
  • ♦ Clock and date display without power consumption; data storage methods consist of native storage and USB flash disk storage. Native storage could store 500 data which can be transfer and restore in USB flash disk; the data of USB flash disk is Word format, which can be edited and printed on the computer.
  • ♦ The function of thermal printer, fast and noiseless.
  • ♦ Small size and light weight.
Range 0.9~10000
Accuracy ±(Reading×0.1%+2 words)(≤500)
±(Reading×0.2%+2 words)(>500≤3000)
±(Reading×0.3%+2 words)(>3000)
Resolution ration 0.9~9.9999(0.0001)
10000 and above(1)
Working power supply AC220V±10%, 50Hz (Built-in battery is at option)
Instrument weight 3.5 kg
Instrument dimension 325 mm(L)×225 mm(W)×145 mm(H)
Use of temperature -10℃~50℃
Relative humidity ≤90%,No dew