|Maximum Test Voltage||430 V AC||170 V AC||250 V AC||125 V AC||100 V AC||100 V AC|
|Test Voltage Source||Both single-phase & true three-phase||Both single-phase & true three-phase||Both single-phase & true three-phase||Both single-phase & true three-phase||Both single-phase & true three-phase||Single-phase|
|Display||7″ graphical touch screen||7″ graphical touch screen||LCD||LCD||LCD||LCD|
The TRT is a true three-phase, fully automatic test set, specially designed for a turns ratio, a phase shift, and an excitation current measurement of power, distribution, and instrument transformers. The TRT determines the transformer turns ratio by accurately measuring voltages across the unloaded transformer windings. As a test result it displays the ratio of these voltages. This ratio of voltages can also be automatically rescaled to match the physical ratio of a number of turns on a transformer high and low voltage side.
The TRT cables are interchangeable with TWA cables.
By using DV-Win software, it is possible to create test plans and to prepare test settings in advance. All test results are displayed both numerically and graphically for easier analysis.
All TRT devices are equipped with a USB flash drive feature for easy transfer of test results to USB flash drive.
All TRT devices have built-in tap changer control unit that allows remote tap change and also automatic turns ratio measurement of tap changers.
Built-in 112 mm thermal printer is an option.
TRTC Verification Calibrator
The TRTC Verification Calibrator is optional accessory that can be used as a reference transformer for the verification of the accuracy of the Three-phase Transformer Turns Ratio Tester TRT. The TRTC Verification Calibrator is available for both single-phase and three-phase test, with ranges up to 4800 and test voltages from 1 V to 250√3 V.
Extension Transformer CVT40
CVT40 is an extension transformer which is used together with DV Power TRT4x series to test capacitive voltage transformers. With this extension, the TRT4x series output voltage is increased 40 times, up to 5 kV AC.
TWA-TRT Safety Switchbox
The TWA-TRT Safety Switchbox is an optional accessory for TWA series of Tap Changer & Winding Analyzers and TRT series of Transformer Turns Ratio Tester, which share the common test leads. It ensures the safety of the operator during the change of test leads from one instrument to the other by safely grounding the test leads during the change of instruments.