Three-phase transformer turns ratio test set

• 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

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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.

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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.

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