(H) GW1 outdoor AC high-voltage disconnector

Isolating switch [1] is a switching device which is mainly used for "isolating power supply, switching operation, connecting and cutting off small current circuit" and has no arc extinguishing function. When the disconnector is in the off position, the contact shall be provided with insulation distance meeting the specified requirements and obvious disconnection marks; When in the closed position, the switchgear can carry the current under normal circuit conditions and abnormal conditions (such as short circuit) within a specified time. Generally, it is used as high-voltage disconnector, that is, the disconnector with rated voltage above 1kV. Its working principle and structure are relatively simple. However, due to its large usage and high requirements for working reliability, it has a great impact on the design, establishment and safe operation of substations and power plants. The main feature of the disconnector is that it has no arc extinguishing capacity and can only open and close the circuit without load current. The entry introduces the functions, characteristics, types, applications, error prevention improvement, maintenance, common problems, etc. of disconnectors.