The main function of the isolating switch is to isolate the live parts and the parts that do not need to be live in the high-voltage power distribution device. Simply put, it is to disconnect the no-load current circuit, which makes the power supply and the electrical equipment that need to be overhauled more obvious The disconnection point. Allows workers to perform maintenance under the premise of ensuring safety.
But it should be noted that since the isolating switch does not have a special arc extinguishing device, it cannot disconnect the load current and the short-circuit current. In this case, it is necessary to check whether the circuit breaker has opened the circuit. Only when the circuit breaker has opened the circuit, can the isolating switch be operated normally. Otherwise, under the action of high voltage, the disconnection point will produce a strong arc, and it can hardly extinguish by itself, and may even cause arcing, which will cause the equipment to be burned and accidents. In addition, the isolation switch can also be used to connect or disconnect small current circuits.