Three-position electric indicating device of drawout breaker

Abstract

The invention relates to a three-position electric indicating device of a drawout breaker, comprising an electric indicating device bracket; the electric indicating device bracket consists of a sliding plate, a small sliding plate and a big lateral plate through bolts; chutes are arranged on the small sliding plate and the big lateral plate; a semicylindrical sliding block is connected with the sliding plate through a screw; the semicylindrical sliding block can slide in the chutes arranged on the small sliding plate and the big lateral plate; three microswitches for indicating three position signals, namely 'connection', 'test' and 'separation' are arranged in the electric indicating device bracket; a roller, a driving connecting rod, a spring plate and a signal transmission connector are arranged on each microswitch; when the sliding plate is driven by external force, the semicylindrical sliding block can slide in the chutes; and when the semicylindrical sliding block slides to the roller of the microswitch at the corresponding indicating position, the roller can drive the driving connecting rods, so that the signal transmission connectors form a loop and send out electric signals; and therefore, the state of a position where the breaker is located can be mastered by a central control room in a long-distance way.

Description

Technical field: [0001] The invention relates to an electrical indicating device for three working positions of "connection", "test" and "separation" in a withdrawable low-voltage circuit breaker, belonging to the technical field of low-voltage electrical appliance manufacturing. Background technique: [0002] Withdrawable low-voltage circuit breakers usually have three working positions: "connection", "test", and "disconnection". When it is in the "connected" position, both the main circuit and the secondary circuit are connected, and the circuit breaker works normally to provide the user with instant information of the system; when it is in the "test" position, the main circuit is disconnected, only the secondary circuit is connected, and the user Some necessary tests and inspections can be carried out on the circuit breaker; when it is in the "separated" position, the main circuit and the secondary circuit are completely disconnected, and the user can operate and replace ...

AI Technical Summary

Problems solved by technology

[0003] At present, the indication of the three working positions of the traditional withdrawable low-voltage circuit breaker can only be realized by the rotation of the mechanical guide rod of the circuit breaker itself. The observation range is limited to the site, and the central control room cannot be remotely controlled. The state of the circuit breaker has greatly restricted the development trend of "networking" and "communication" of the circuit breaker

Images