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DC resistance detection of transformer winding?

time:2020/11/23   source:华天电力  reading:249 time

The transformer is one of the indispensable electrical equipment in the power system, and it is also an important part of the power system. In the power preventive test, the power worker checks whether the welding quality of the internal wires and leads of the transformer winding is intact. Whether the position contact is possible, whether the transformer winding or lead wire is broken, whether there is a broken wire in the winding formed by several parallel wires in the parallel line of the transformer, and whether there is a short circuit between the transformer layer and the turns, it is necessary Detect the DC resistance of the transformer winding. So how to detect the DC resistance of transformer windings?


Sweep Frequency Response Analyzer.png


To detect the DC resistance of transformer windings, we only need a transformer winding tester. The new power supply technology is adopted, which not only has fast measurement speed, but also has high measurement accuracy. It also has the characteristics of small size, light weight, and convenient operation.


The fast test speed of the transformer winding tester is reflected in: the output of the instrument is a constant current of 10A, which can effectively compensate the current inertia of large inductance equipment during the test process, accelerate the saturation of the iron core, and shorten the charging time and increase the measurement speed. The test speed is hundreds of times that of traditional test equipment.


The high accuracy of the transformer winding tester is reflected in the fact that the instrument adopts high-power and high-precision programmable constant voltage and constant current technology, with stable anti-inductance and strong anti-interference ability, so the measurement accuracy is guaranteed.


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