Zero sequence mini current transformer

The difference between common current transformers and zero sequence current transformers？

The use of miniature current transformer for circuit breaker is briefly described
What is a circuit breaker?A circuit breaker is usually used to distribute electrical energy and provide some protection for power lines.When the circuit is overloaded, it can be cut off automatically.Therefore, it can be considered as a current switching device capable of closing, carrying and disconnecting circuits under certain conditions.Generally, there are two types of circuit breakers: high voltage and low voltage.Among them, the low voltage circuit breaker use range is very wide, the difference between high voltage and low voltage is 3kV.In addition, if the circuit breaker is required to operate normally, the following conditions must be met: rated voltage, rated current, current range for overload protection and rated short-circuit breaker current.Only if the above conditions are met, can they be effectively avoided.There was an electrical accident.
What is a high voltage circuit breaker?The main function of hV circuit breakers is to control and protect hV circuit breakers.It can cut off or close the high-voltage circuit in the no-load current or load current, and in the event of circuit fault, but also through the relay protection circuit equipment, because it has a perfect arc extinguishing structure and the ability to break through the current.By this protection, the circuit problem can be prevented from spreading, and the fault parts can be removed from the whole circuit system, and the fault free parts can still work normally.From the point of view of structure, hV circuit breaker can be divided into diversion part, arc suppression part, insulation part and operation part.From the point of view of arc extinguishing medium, it can be divided into oil circuit breaker, air circuit breaker, vacuum circuit breaker, magnetic circuit breaker and so on.From the operation nature, it can be divided into electric mechanism, pneumatic mechanism, hydraulic mechanism, spring energy storage mechanism and manual mechanism.