Three Phase Transformer Turns Ratio Tester

The transformer turns ratio group tester features an ingenious and unique circuit design, resulting in superior performance, comprehensive functions, small size, and light weight. Internally, it uses an electronic standard current transformer as the measurement reference, ensuring long-term stable and reliable measurement accuracy. The instrument boasts fully automatic measurement capabilities, automatically measuring the three-phase turns ratio, winding connection method, and group designation without requiring any parameter settings.

1. Fully automatic transformer ratio measurement function: It can automatically complete the measurement of three-phase transformer ratio, winding connection method and group number without setting any parameters. It is easy to operate and can be done with just one press.
2. It can automatically measure, continuously measure three-phase and single-phase transformer turns ratio, and calculate turns ratio error.
3. It can measure transformers with various connection groups such as Y/y, Y/d, D/y, D/d, ZN/y, and ZN/d.
4. It can measure the wiring configuration and group number of high and low voltage side windings, and is especially suitable for measuring transformers with unknown groups.
5. Comprehensive protection functions, including quantitative output overload protection and overvoltage protection.
6. When the excitation current is large, the output voltage can be automatically reduced to adapt to transformers with low rated voltage and large excitation current.
7. Automatically tracks and measures the on-load switch tap position, eliminating the need for repeated parameter input.
8. It can store 200 measurement data, which will not be lost when power is off.
9. Small size, light weight, accurate measurement, and fast speed.
10. The color touchscreen is intuitive and convenient to use.
11. It has Bluetooth transmission function.
12. The calendar and clock function simultaneously without power loss.

• On-site testing of three-phase transformation ratio, connection group, and group number of power transformers
• Rapid measurement of turns ratio and polarity of single-phase transformers and voltage transformers
• Unknown transformer group analysis and wiring method determination
• Automatic tracking of tap position and turns ratio error testing of on-load tap-changing transformers
• Factory/handover/preventive testing of substations, power plants, and transformers.
• Installation, maintenance, and acceptance testing of transformers in high and low voltage power distribution systems