A manual opening and closing device of a permanent magnet operating mechanism

Abstract

The invention discloses a manual opening and closing device of a permanent magnet operating mechanism, comprising an energy storage device (1), a capacitor charging circuit (2) sequentially connected to the output end of the energy storage device (1), and a manual discharge circuit (4) and a control circuit (3) connected to the capacitor charging circuit (2) for controlling its on-off, and the control circuit (3) is powered by the energy storage device (1). The invention can realize the manual opening and closing of the permanent magnet operating mechanism without external power supply, the device is simple and reliable, the technology is mature, and the market competitiveness of the permanent magnet mechanism circuit breaker is greatly improved.

Description

technical field [0001] The invention relates to a manual opening and closing device, in particular to a manual opening and closing device of a permanent magnet operating mechanism. Background technique [0002] With the introduction of the smart grid, people pay more and more attention to the intelligence of equipment, and the intelligence of circuit breakers has been extensively studied. [0003] The operating mechanism of the circuit breaker mainly uses a spring mechanism and a permanent magnet mechanism. Compared with the spring mechanism, the permanent magnet operating mechanism has fewer parts, less failure, and higher reliability, so it is widely used. However, the permanent magnet operating mechanism has a significant shortcoming. We know that the permanent magnet mechanism needs to be equipped with a control box to provide the operating voltage for the mechanism coil. When the power fails or the control box fails to work, the permanent magnet mechanism cannot be clo...

AI Technical Summary

Problems solved by technology

However, the permanent magnet operating mechanism has an obvious shortcoming. We know that the permanent magnet mechanism needs to be equipped with a control box to provide the operating voltage for the mechanism coil. When the power fails or the control box fails to work, the permanent magnet mechanism cannot be closed manually. This shortcoming This has seriously affected the competitiveness of the permanent magnet mechanism circuit breaker in the industry. Solving the problem of manual closing of the permanent magnet mechanism is an important way to improve the reliability of the permanent magnet mechanism circuit breaker and occupy the distribution network switch market

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