PDIC TR 300

The TR 300 offers selectable test voltages of 5, 50, and 100V. Optionally, a 250V test voltage is available for testing in electrically noisy environments. The higher test voltages increase the measurement accuracy, especially at high turns ratios.
In addition, the test frequency of the voltage is 55 Hz so power frequency interferences of the substation do not affect the turns ratio measurement. Higher test voltages, coupled with off frequency measurement, make the TR 300 an ideal instrument for high accuracy testing.
To prevent an accidental wrong test lead hookup, such as when the operator reverses H and X leads, the TR 300 outputs a low-level test voltage to verify the hookup condition before applying the full test voltage to the transformer. Higher test voltages allow the TR 300 to test CT’s and PT’s, as well as power transformers.
Product Details
Outstanding Features:
• Off power frequency test voltages for high accuracy in electrically noisy high voltage sub stations
• Optional battery backup for up to 3 hours of testing
• Wide Ratio range: 0.8 - 50,000: 1, covers all types of transformers
• Capable of detecting all types of 3-phase transformers defined by ANSI, IEC, and Australian standards
• 4 available voltages: 5Vac, 50Vac, 100Vac, and 250 Vac (optional)
• Phase angle and excitation current measurement covers all types of transformers including phase shifting transformers
• Bluetooth and USB PC interfaces
• Optional built-in 3.5-inch wide thermal printer for quick field analysis of test results

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