The Megger TTR310 turns ratio test set is designed to measure the turns ratio of power, instrument, and distribution transformers in a substation or manufacturing environment.
The Megger TTR100 is an automatic handheld, battery operated transformer turns ratio test set used to measure the turns ratio, excitation current, phase displacement, dc resistance and polarity of windings in single- and three-phase distribution transformers (tested phase by phase), potential & current transformers, and tapped transformers.