Turns Ratio Tester TRT400

Rated 2.70 out of 5 based on 76 customer ratings
(103 customer reviews)
  • Fast Shipping

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  • Test voltages from 1 V AC up to 430 V AC
  • Ratio range 0,8 – 50 000
  • The best ratio accuracy of 0,03%
  • Built-in tap changer control unit
  • Built-in USB flash drive
  • True three-phase and single-phase test voltages
  • Automatic vector group detection
  • Detailed analysis of test results
  • Pre-programming test templates
  • Lightweight – only 9 kg


TRT400 is the most accurate turns ratio tester on the market. True three-phase test voltage allows testing any type of transformer, including special transformers like phase shifting, arc furnace, rectifier transformers, etc.

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