Breaker electric operating device

Abstract

The invention discloses a breaker electric operating device which comprises a shifting block and an electric operating device body. The electric operating device body comprises a stator and a coil rotor. The stator comprises a magnet yoke and permanent magnets which are symmetrically arranged on the two end faces in the magnet yoke in a Halbach array. The coil rotor is arranged in the stator. The coil rotor and the stator form a sliding pair. The coil rotor is limited at the two ends of the stator in the sliding direction. The end, extending out of the stator, of the coil rotor can shift the shifting block in the sliding direction of the coil rotor. Coils are arranged in the coil rotor at intervals. Three or three-multiple coils form coil windings. The coil windings are connected in parallel. Hall sensors are arranged at continuous coil gaps in the coil rotor. According to the breaker electric operating device, on the condition that the original structure of a molded case circuit breaker is not changed, the breaker electric operating device can achieve remote control over the breaker, is simple in structure, reliable in operation, quick in response, large in driving force and low in impact, does not produce extra pushing resistance when an electric operating mechanism does not work, and reserves the manual operation function.

Description

technical field [0001] The invention belongs to the technical field of circuit breaker structure design, in particular to an electric operating device for a circuit breaker. Background technique [0002] In the molded case circuit breaker, the electric operating device can be used to automatically open and reclose the circuit breaker at a long distance, so as to realize the remote control of the circuit breaker, which is of great significance for the automation and intelligence of the low-voltage power distribution system. [0003] The currently used circuit breaker electric operating devices can be mainly divided into two types: electromagnet drive and motor drive. [0004] The electromagnet operating mechanism controls the opening and closing of the circuit breaker through the attraction and release of the coil to the armature. Limited by the working principle and characteristics of the electromagnet, the electromagnet operating mechanism has a large volume, relatively sma...

AI Technical Summary

Problems solved by technology

However, due to the complex transmission mechanism of this type of operating mechanism, the gears are easy to wear and tear, which reduces the reliability of the mechanism; and the entire mechanism is rigidly connected, resulting in the automatic opening and closing of the circuit breaker. The speed is low, and it is also limited in the application of molded case circuit breakers.

[0006] To sum up, the electromagnet operating mechanism and the permanent magnet operating mechanism directly drive the handle of the circuit breaker through the linear reciprocating motion of the armature or permanent magnet. Large; the motor operating mechanism is small in size and relatively stable in operation, but the response is slow, the transmission mechanism is complicated, and the reliability of the system is low

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