Test & Measurement
Megger TTR20 tester measures turns ratio and excitation current
By Alyssa Dalton
December 17, 2013 – Megger now offers a handheld, battery-operated TTR tester (transformer turns ratio), which will measure turns ratio, polarity and excitation current in single-phase and three-phase transformers, current and potential transformers as well as voltage regulators.
The TTR20 is capable of measuring high turns ratio of 10,000:1 with the lowest excitation voltage and excitation current up to 100 mA, adds Megger. According to the company, it is an ideal utility tool for performing QA on incoming transformers, transformer-manufacturing environments and meter shops, and wind and solar applications.