Three-channel Transformer DC resistance tester (hereinafter referred to as direct resistance meter) is the latest generation product of transformer DC resistance measurement, used for measuring large-capacity transformer three-phase winding DC resistance. Three-phase transformer winding DC resistance can be tested simultaneously . For loaded tap changer, it’s no need to discharge, just to regulate the tap directly. The measuring time is one-third of traditional single-phase measuring time, can reduce the working hours and labor intensity greatly Direct resistance tester using a large-screen LCD display, full graphical interface, clear and intuitive, is very simple to operate. And equipped with a large-capacity printer panel and a nonvolatile memory, can storage and print easily. The testing data is stable, fast and reproducible, is the best choice for on-site transformer DC resistance measuring.
2 Display, print all the tested data of transformer high voltage winding, and automatical calculates the three-phase unbalanced ratio;
3 With perfect counter emf protective function;
4 With automatic discharge and discharge indicator function, to reduce the misuse, ensure the equipment and personnel safety;
5 The instrument can store 500 groups of tested data permanently, also can use USB flash drives to store data;
6 The instrument uses 5.7 -inch large LCD, can print the test results at any time;
7 The instrument can suitable for wide range of temperature, with high precision, shock-proof and anti-jamming function, is portable and convenient.
| Output Current | Three-phase：2 × 10A, 2 × 5A, 2 × 2A |
| Single phase：20A, 10A, 2A | |
| Test range | 2 × 10A: 500μΩ ~ 500mΩ |
| 2 × 5A: 1mΩ ~ 1Ω | |
| 2 × 2A: 2.5mΩ ~ 2.5Ω | |
| 20A: 250μΩ ~ 1Ω | |
| 10A: 500μΩ ~ 2Ω | |
| 2A: 2.5mΩ ~ 10Ω | |
| Resolution | 0.1μΩ |
| Accuracy | ± 0.2% |
| Dimension | 420mm × 250mm × 340mm |
| Weight | 15kg |
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