True 3-phase High Precision TTR Meter Three Phase Digital Transformer Turn Ratio Tester for Current Voltage Transformer

In the semi-finished products, finished products in the production process of power transformer, the transformer operation before the installation of the new transformer operation and power system according to the preventive test rules of the State Ministry of electric power, requirements for the transformer turns ratio or regular voltage ratio test. The traditional variable ratio bridge operation is tedious, the reading number is not intuitive, and the necessary conversion is required. The test results are only the data of a phase change ratio. The variable ratio tester overcomes the shortcomings of the traditional variable ratio bridge test. The screen uses a three phase variable ratio test at once, and the test speed is fast and the accuracy is high. The field test time is greatly saved, which brings high efficiency for the customer's test.

The transformer turns ratio test, or TTR test, confirms that the transformer has the correct ratio of primary turns to secondary turns. Using this test correctly can help to identify tap changer performance, shorted turns, open windings, incorrect winding connections and other faults inside transformers. Sansion's range of TTR testers are robust to withstand the harsh conditions that some transformer testing in. The range includes varying features to simplify and speed up testing as well as 3 phase TTR testers and PT and CT TTR testers.

The SXBB 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.

1. Suitable for test turns ratio and phase difference of special transformer.
2. Particularly suitable for measuring rectifier transformer with phase shift, intuitively display angle of phase shift.
3. Automatically generate stable amplitude, phase constant three-phase (120 °) or two phase (90 °) power supply.
4. Not restricted by the internal wiring mode of the transformer, directly measure voltage ratio and phase angle difference of HV and LV side.
5. Simultaneous 3-phase measurement.
6. Disposable set test parameters, test directly after converting tapping switch, automatically determine tap position and standard ratio.
7. Fast speed, test time 8 seconds.
8. Test results are not affected by power-frequency power frequency and amplitude fluctuations.
9. Internal protection function with over-current protection, high and low voltage reverse connection protection.