An arc-extinguishing chamber actuator for isolating load switch

Abstract

The invention relates to an interrupter actuator for an isolated load switch, comprising a base, an insulator group, a moving contact busbar, a moving contact finger, a static contact busbar, a static contact, an arcextinguishing chamber and an operating mechanism. A conductive wheel is installed on the movable contact finger, and a conductive rod is fixedly installed on the side adjacent to the movable contact finger. There is a main transmission shaft in the arc extinguishing chamber, and a conductive dial is connected to the upper end of the arc extinguishing chamber. The conductive fork cooperates with the conductive wheel and drives the main transmission shaft to move up and down. The advantage of the present invention is that: when the moving contact finger is driven by the operating mechanism to perform closing operation, the conductive wheel and the conductive shift fork will first contact to drive the rotation of the conductive shift fork, and the conductive wheel will roll under the drive of the conductive shift fork , and drive the conductive rod to rotate to the upper side of the movable contact finger to contact the conductive, and at the same time, the rotation of the conductive fork will drive the main drive shaft to go down, triggering the mechanism in the arc extinguishing unit, so that the arc extinguishing chamber is connected between the movable contact finger and the static contact. Before closing, perform fast closing.

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.

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