For the power system, transformers are the core equipment in the system, so the long-term and reliable operation of transformers is related to the stability and reliability of the entire system.

The DC resistance test of transformer windings and transformer ratio group test are essential test items for transformers after handover, major repairs, and changes to tap changers. At present, the traditional testing method for the two experimental projects is split type testing, which requires equipping a direct resistance tester and a variable ratio tester. Because they are two independent instruments, each equipped with a testing line, it requires separate wiring and testing, which greatly reduces work efficiency.

Our company has innovatively developed a transformer DC resistance ratio tester. We only need one set of equipment to complete the testing of two projects, and there is no need to frequently disconnect test lines, greatly improving work efficiency and saving user costs.

1. One wiring can complete direct resistance testing and variable ratio testing.

2. The direct resistance testing function can be used to test Yn, Y, and △ windings using three-phase measurement method, and calculate the three-phase unbalance rate; The test power supply has a high output voltage of 28V and a high output current of 20A, meeting the testing requirements of the vast majority of transformers; The design of high-voltage and large capacity main transformers facilitates magnetic testing function, greatly accelerating the speed of direct resistance testing.

3. The ratio testing function can perform ratio, group, and polarity tests on three-phase transformers, single-phase transformers, PT transformers, and Z-type transformers.

4. The automatic protection function for power supply 380V misconnection and the alarm function for grounding wire unconnected ensure your use.

5. Industrial grade 10.1-inch large screen display, fresh and simple display style design, full touch operation, creating a comfortable and convenient human-machine interaction system for you.