What does the circle of Split Core Current Transformers mean

1. In electrical system diagrams, a small circle is often used to represent a winding, and a circle to represent a winding. If there are two circles in series, it means that the switching current transformer has two windings. If you have three circles connected in series, that means you have three windings.

2. The higher the voltage level, the more the number of turns; low-voltage 380V switching current transformers are usually windings; if there is no special requirement for medium voltage 10kV, there are generally two windings. If there are special requirements, windings can be installed. 110kV high voltage generally has four windings;

3. Split Core Current Transformers have two windings, one with 0, 5 level measurement accuracy, the other with P level protection accuracy; three-winding transformer, generally one winding has a measurement accuracy of 0, 2 or 0, 2S, and one winding has a measurement accuracy of 0, 2 or 0, 2S. The measurement accuracy is 0, 5, and the protection accuracy of one winding is P; there may also be a winding with an accuracy of 0, 2 or 0, 2 s for measurement, and two windings with an accuracy of P for protection. The number of windings and the choice of accuracy depend on the actual situation.