This item is a great condition used Megger TTR310 Three-Phase Transformer Turns Ratio Test Set. Calibrated to NIST Traceable Standards on May 7, 2026. Includes H lead set, X lead set, green ground lead with clamp, standard power cable, and a NIST traceable calibration certificate. All pictures are of the actual unit and accessories.
This item comes with a 180 day warranty. All functions are guaranteed to work or money will be refunded.
For customers in the USA, all purchases arrive cleared. ALL brokerage or customs fees are prepaid by us. Your item arrives FOB destination.
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Megger TTR310 Three-Phase TTR Test Set Transformer Turn Ratio NIST Calibrated
The TTR300 Series of three-phase transformer turns ratio test sets are designed to measure the turns ratio of power, instrument, and distribution transformers in a substation or manufacturing environment. A rugged and robust design makes these instruments well suited for use in a variety of harsh environments. Our leads are specially designed to provide the necessary flexibility needed in cold weather.
The TTR300 Series are ideal for use by power transformer manufacturers. Their unique testing procedures and storage capability allows an operator to set up and test difficult three-phase transformers (with multiple tap changers and bushing CTs) in a fraction of the time than it used to take with other TTRs. This test also includes a pass/fail limit of individual ratios.
- Stand-alone or remote-control operation
- Accurately measures ratio, phase deviation and excitation current
- Field upgradeable without compromise to calibration
- Built-in capability for storing and downloading test results in an XML format, via RS-232, Ethernet or USB ports (depending on model)
- Works in the presence of high interference/high voltage
- Highest ratio measurement (45,000:1); highest accuracy (0.1%)
- Displays % error vs. name plate with pass/fail limits
