What is the function of the vacuum circuit breaker?
1、 Circuit breakers are mainly used for opening and closing circuits in power systems. When short-circuit fault occurs in the circuit, the short-circuit current can be cut off by closing the circuit breaker quickly, and the accident scope can be prevented from expanding.
2、 The circuit breaker can also be used to control and protect the motor and transformer, thereby playing the role of protecting the motor and transformer. In addition, it can be used as a fault signal display device, so it can be used for remote control, centralized monitoring, monitoring the operation of equipment, and can also be used as short-circuit protection in the event of line failure.
3、 The circuit breaker can quickly cut off the load current without power cut off. When the circuit fails, the load current can be transferred from the failure point to a safer place, thus reducing the time of power failure and avoiding the economic loss caused by power failure.
4、 The circuit breaker can also be used for motor short circuit protection, and the motor shall not be damaged due to faults.
5、 The circuit breaker can be controlled by three-phase electricity, which can provide different voltage values in different time periods.
6、 The vacuum circuit breaker has the characteristics of small volume, light weight, high reliability and so on because of adopting the arc extinguishing structure of high vacuum degree and low insulation resistance. Vacuum circuit breaker has become one of the most widely used electrical appliances in AC circuit, which is called “the last line of defense” in power system. At present, vacuum circuit breakers are widely used in distribution network and play an important role.
7、 At present, the vacuum circuit breakers commonly used can be divided into three categories: gas insulation switch (GIS), arc extinguishing medium is vacuum and air insulation mode: arc extinguishing chamber is metal oxide structure.
Post time: Feb-23-2023