Balance characteristics of residual current transformers

- Mar 28, 2021-

The deviation of the conductor in the magnetic core and the angle of the head and tail of the spiral core are the two main factors that affect the balance characteristics of the current transformer. Analytical calculation combined with numerical simulation is used to analyze its influence on the balance characteristics of the transformer, and the correctness of the theoretical analysis is verified through experiments. The results show that the magnetic core of the transformer has a good balance characteristic under the condition that the head and tail angles of the transformer core are at 0° and the wires passing through the transformer are evenly distributed in the center of the magnetic core and the magnetic core is equipped with a magnetic shield. Misoperation may occur.