Intelligent circuit breaker is an automatic device that automatically reconnects the switch after tripping for some reason. Which line requires an intelligent circuit breaker? Today, let's take a look together!

Automatic reclosing circuit breaker, which includes the functions of residual current device and ordinary circuit breaker, has been shown in power system operation experience that the vast majority of faults in overhead lines are transient, with faults generally less than 10%. Therefore, after the short-circuit fault is cut off by the relay protection action, the arc will automatically extinguish, and in most cases, the insulation at the short-circuit can be automatically restored.

Intelligent circuit breaker

Therefore, automatic reclosing not only improves the safety and reliability of power supply, reduces power outage losses, but also enhances the transient stability level of the power system, increases the transmission capacity of the line, and can compensate for or reduce losses caused by incorrect tripping of switches or relay protection devices. Intelligent circuit breakers are important control components in power systems, and their intelligence is the foundation of intelligent devices and even smart grids. Therefore, overhead power lines generally require the use of intelligent circuit breakers.