An Outdoor Load Switch with Visible Isolation Fracture

Abstract

The invention relates to an outdoor load switch possessing a visible isolation fracture. The switch comprises a load switch operating handle and an isolated large shaft operating handle. An isolated large shaft is fixed to a load switch through an isolation chassis and is connected to an isolation touch knife through an insulation pull bar. Through rotating the isolated large shaft operating handle, the isolation touch knife and an isolation knife holder can be closed or disconnected. The isolation knife holder is fixed to the isolation chassis through an insulation pillar. The load switch isprovided with an opening and closing indication linkage plate and is connected to one end of an interlocking rod through a connection plate. The other end of the interlocking rod is connected to a linkage slide bar through a small connection plate. The upper end of the linkage slide bar is placed in a slideway. When the load switch is in an opening state, the linkage slide bar is not located at the rotation path of a limiting stop block. When the load switch is in a closing state, the linkage slide bar is located at the rotation path of the limiting stop block. When the isolated large shaft isrotated, the limiting stop block and the linkage slide bar generate interference and the interference is generated before the isolation touch knife is in opening or closing transition.

Description

technical field [0001] The invention relates to an outdoor load switch with a visible isolation fracture, belonging to the technical field of electrical switches. Background technique [0002] At present, outdoor load switches used in 10kV high-voltage distribution and transmission lines mostly adopt built-in isolation forms, such as figure 1 shown. The load switch 5 has built-in isolation shaft 1 and opening and closing shaft 4. One end of the isolation shaft 1 is connected to the switch outlet through a soft connection 7, and the other end is provided with an isolation knife 3. Both the isolation shaft 1 and the opening and closing shaft 4 are connected to the mechanism of the load switch. When switching on, by operating the operating handle 8 corresponding to the load switch, the isolation shaft 1 rotates at a certain angle, so that the isolation knife 3 is in contact with the isolation tool holder 2. At this time, the opening and closing shaft 4 also rotates at a certai...

AI Technical Summary

Problems solved by technology

In this process, the breaking of the isolating switch and the breaking of the load switch are carried out almost at the same time. In order to better achieve the purpose of arc extinguishing in actual work, it is often necessary to close the isolating switch first and then close the load switch when closing. When opening the gate, first divide the load switch and then the isolation switch; in addition, because the isolation switch is placed inside the load switch, the isolation fracture cannot be seen when the gate is opened, so it is impossible to ensure that the isolation is in place, and it is not convenient for later maintenance, and the internal space of the load switch is limited. limit, the distance between the blades of the isolating switch after opening is small

Images