The difference between current transformer and zero sequence current transformer

1. The application method of current transformer and zero-sequence current transformer is different. The zero-sequence current transformer is used to test the zero-sequence current. Generally, all the three live wires and zero wires are passed over the internal threads of the transformer, and the vector of the three-phase current is accurately measured. And, that is, the zero sequence current.

2. The characteristics of the zero-sequence current determine that under all normal conditions, the primary current of the zero-sequence current transformer is very small, but under abnormal conditions, the zero-sequence current will also be very large.

3. Because the zero-sequence current transformer generally has to cross the three live zero wires, the internal thread of the zero-sequence transformer is very large under the same current condition. "Internal thread diameter" is a key index value of zero sequence transformer.

4. The Huai Que level is relatively low. In our daily life, we don't see current transformers everywhere, but it covers many areas, and its existence is unavoidable. The current transformer is a unique transformer, and its principle is similar to that of transformers. The difference is that in the transformer core of the transformer, the alternating main magnetic flux is caused by the amount of alternating current applied on both sides of the primary winding. The alternating main magnetic flux in the transformer core magnetically induces a relative secondary induced electromotive force and secondary current in the secondary winding of the current transformer. Because the primary winding and the secondary winding of the current transformer are contained in the same transformer core, they are covered by the same alternating main magnetic flux. Therefore, the current amount of the primary winding and the secondary winding and the coil are on the scale. The turns product should be the same.