What are the differences 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 check the zero-sequence current. Generally, all 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 the primary current of the zero-sequence current transformer is very small under normal conditions, but under abnormal conditions, the zero-sequence current will also be very large.

3. Because the zero-sequence current transformer generally crosses 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. As a unique transformer, the current transformer is similar in principle to the transformer. 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 and the coil of the primary winding and the secondary winding on the standard value The turns product should be the same.