The ZZS-20A three circuit transformer DC resistance tester (hereinafter referred to as the DC resistance tester) is the latest generation product for measuring the DC resistance of transformers. It is optimized for measuring the DC resistance of three-phase windings of large capacity transformers. Simultaneously test the DC resistance of the three-phase winding of the transformer. For on load tap changers, there is no need for discharge, and the tap changer can be directly adjusted. The measurement time is one-third of traditional single-phase measurement, which can greatly shorten the working time and labor intensity. The direct resistance meter adopts a large screen LCD display with a fully Chinese graphical interface, which is clear and intuitive, and the operation is very simple. And equipped with a panel printer and large capacity non-volatile memory, it can conveniently store and print measurement results. The test data is stable, fast, and has good repeatability, making it the best choice for on-site measurement of transformer DC resistance.The transformer DC resistance tester is a new generation of fast tester that integrates magnetic assisted testing, three-phase testing, and demagnetization functions. It is an ideal equipment for measuring the DC resistance of large power transformers.

Product nickname: Three channel transformer DC resistance tester, DC resistance speed tester, transformer DC resistance tester, transformer winding DC resistance tester, transformer DC resistance speed tester, transformer DC resistance fast tester, inductive load DC resistance speed tester, inductive load DC resistance fast tester, inductive load DC resistance tester, three circuit transformer DC resistance tester, three circuit transformer tester, three-phase DC resistance tester.

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1. Connect all the high and low voltage current and potential test lines to the transformer at once, and there is no need to reverse the test lines during the testing process;

2. For the winding testing of star connection method, the instrument can adopt a three-phase simultaneous testing method to test the resistance of A0, B0, and C0 phases, saving testing time;

3. When testing the low voltage of a transformer with a three-phase five column low voltage internal corner connection, the instrument uses an automatic magnetization method internally, which is faster than directly testing with high current;

4. Display and print all test data of the high, medium, and low voltage windings of the transformer, automatically calculate the three-phase imbalance, and also print the resistance converted to rated temperature;

5. During three-phase testing, A0 data is tested first, followed by simultaneous testing of all three phases. This solves the problem of not being able to test the neutral point lead out resistance during simultaneous testing of all three phases, and the test data is closer to the single-phase test value;

6. Equipped with comprehensive back electromotive force protection function;

7. The instrument can permanently store 200 pieces of test data internally (expandable), and can also use a USB drive to store data for users to import and process on a computer;

8. The instrument has the characteristics of wide temperature range, high accuracy, shock resistance, anti-interference, and easy portability;