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Raytech CT-T1 Current Transformer (CT) Tester





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The Raytech CT-T1 is a microprocessor-based Current Transformer Tester that measures CT excitation current, ratio, and winding polarity tests, all without having to switch the leads during testing.


This CT Tester is precision-made, fully automatic, portable, and built to stand up to the harsh environments of field testing.


Raytech CT-T1 Current Transformer (CT) Tester features:

  • Fully automatic knee point detection
  • Ratio range of 0.1to15,000
  • 5 low side tap connections
  • Performs CT excitation, ratio, and polarity tests on current transformers
  • Manual or automatic degauss and measurements
  • Easy, one-time hookup for up to 5 CT taps
  • Automatic test voltage range with changeable limits
  • Easy to use tap selector interface
  • Data storage of more than 10,000 measurements
  • Color 5.7″ LCD touch screen display for easy operation
  • 3″ graphic-capable printer





  • 2 USB interfaces and one RS-232serial port