Arc extinguishing chamber actuator applied to isolation load switch

Abstract

The invention relates to an arc extinguishing chamber actuator applied to an isolation load switch. The actuator comprises a base, an insulator group, a moving contact busbar, a moving contact finger,a static contact busbar, a static contact, an arc extinguishing chamber and an operating mechanism. A conductive wheel is arranged on the moving contact finger. A conductive rod is fixedly arranged on one side, which is adjacent to the moving contact finger, of the conductive wheel. A main drive shaft is arranged in the arc extinguishing chamber. A conductive shifting fork is connected with the upper side end of the arc extinguishing chamber. The conductive shifting fork cooperates with the conductive wheel to drive the main drive shaft to move up and down. The actuator provided by the invention has the advantages that when the moving contact finger performs closing operation under the driving of the operating mechanism, the conductive wheel and the conductive shifting fork first contactthe rotation of the conductive shifting fork; the conductive shifting fork drives the conductive wheel to roll, and drives the conductive rod to rotate to the upper side of the moving contact finger to realize contact conductivity; the rotation of the conductive shifting fork drives the main drive shaft to descend to trigger a mechanism in an arc extinguishing unit, so that the arc extinguishing chamber carries out closing quickly before the closing of the moving contact finger and the static contact.

Description

technical field [0001] The invention relates to an isolating switch, in particular to an interrupter actuator for an isolating load switch. Background technique [0002] The load isolation switch is a device that isolates the power-off part from the live part and creates an obvious disconnection point to isolate the faulty equipment or perform power-off maintenance. Load disconnectors are widely used in power distribution systems and automation systems in construction, electric power, petrochemical and other industries. Modular design structure, with flexible and diverse combinations, the shell is made of glass fiber reinforced unsaturated polyester resin, which has high dielectric performance, protection ability and reliable operation safety. The operating mechanism is an acceleration mechanism with spring energy storage and instantaneous release, and a double-break point contact structure for instant on and off. It has nothing to do with the speed of the operating handle...

AI Technical Summary

Problems solved by technology

In the above-mentioned closing action process, it needs to wait until the fast operating mechanism drives the moving arc contact to perform the closing operation before the entire circuit is in the closed state, that is, the current can be turned on, and the current closing speed is still relatively slow.

Images