What is the difference between zero sequence current transformer and ordinary current transformer?

1. The two are only different in the usage method. Sequence current transformer is generally used for the detection of sequence current. Pass three live wires through the inner hole of the transformer, and by detecting the vector sum of the three-phase current, the detection result can be obtained.
2. "Inner hole diameter" is one of the very important characteristics of sequence current transformer. If the primary current is the same, the inner hole of sequence transformer is larger than that of ordinary current transformer. Users can compare it when purchasing. .

3. Under normal circumstances, the primary current of the sequence current transformer is very small, unless under abnormal circumstances, it will cause a large current. Therefore, its measurement range is quite wide, and it allows a large multiple of overload.

4. The accuracy level of sequence current transformer is low.

5. Ordinary current transformer is a special kind of "transformer". Its working principle is similar to that of a transformer. Its purpose is to convert the large current in the primary equipment into a small current according to the corresponding ratio, so that the secondary equipment can used in.