How the Multi Core Current Transformer works

The basic principle of zero sequence current protection is based on Kirchhoff's current law: the algebraic sum of the complex current flowing into any node in the circuit is equal to zero. When the circuit and electrical equipment are normal, the vector sum of each phase current is equal to zero. Therefore, the secondary winding of the Multi Core Current Transformer has no signal output, and the actuator does not operate. When a ground fault occurs, the vector sum of each phase current is not zero. The fault current causes magnetic flux to be generated in the toroidal core of the zero-sequence current transformer, and the induced voltage on the secondary side of the Multi Core Current Transformer causes the actuator to act and drive off. Buckle device, switch the power supply network, to achieve the purpose of ground fault protection.