Both disconnectors and circuit breakers are important devices in the power system, but there are some differences in their functions and functions.
First of all, the main role of the disconnector is to introduce or remove voltage in the circuit, while the main role of the circuit breaker is to control the current in the circuit. In the power system, when equipment or lines need to be disconnected from the system, disconnectors can be used for isolation. This ensures that the entire system is not affected when the equipment is serviced or replaced. When the circuit is faulty, the circuit breaker can quickly cut off the current to prevent the fault from expanding.
Secondly, disconnectors can usually only be operated without load, i.e. closed in the disconnected state or disconnected in the closed state. This is because the disconnector does not have an arc extinguishing device and cannot be operated with live electricity. Whereas, the circuit breaker can be operated under load because it has a powerful arc extinguishing device that can create a strong arc in the circuit and quickly extinguish it.
In addition, disconnectors usually have a simple mechanical structure and are relatively simple to operate. Circuit breakers, on the other hand, have a complex mechanical structure and electrical control system that can control the current in the circuit and monitor its status. Therefore, the operation of circuit breakers is more complex and requires professional personnel to operate and maintain.
In general, there are significant differences in the function and function of disconnectors and circuit breakers. Disconnectors are mainly used to isolate voltages, while circuit breakers are mainly used to control the current and monitor its status. In practice, the choice between a disconnector or a circuit breaker depends on the situation. At the same time, since the safety and stability of the power system is very important, it should be operated and maintained by professionals.