Megger (Norristown, PA) now offers a rugged, handheld, battery-operated TTR tester (transformer turns ratio). The TTR20, a complement to the world-renowned hand-cranked TTR, measures turns ratio, polarity and excitation current in single-phase and three-phase transformers, current and potential transformers as well as voltage regulators. Features include:

  • Allows users to perform tests in less than five seconds after hook up to the transformer. 
  • Easy operation by simply pushing a button and runs on replaceable ‘AA’ batteries.
  • Multiple voltages to keep current low and won’t saturate cores. 
  • Easy to handle leads available in four lengths.
  • Large backlit LCD screen that is easy to read. 

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