High voltage vacuum circuit breaker

Abstract

The invention provides a high-pressure vacuum breaker which comprises a switching tube assembly box, a switching-on / off control box, a linking bar, three connecting rods, a driving steering engine, a switching-on / off handle, a tension spring and three vacuum switching tubes. The vacuum switching tubes of the high-pressure vacuum breaker can be used for controlling switching-on and off of a fixed contact and a movable contact by adopting a rotary driving mechanism, and the vacuum air pressure state inside the vacuum switching tubes cannot be influenced in the switching-on and off processes. The high-pressure vacuum breaker has better application prospects.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a high-voltage vacuum circuit breaker. Background technique [0002] At present, outdoor high-voltage vacuum circuit breakers are mainly used for breaking and closing load currents, overload currents and short-circuit currents in power systems; they are suitable for power systems (including power plants, substations, power transmission and distribution lines, and industrial and mining enterprises) The control and protection of high-voltage vacuum circuit breakers are most widely used in urban distribution networks and rural power grids. The development trend of high-voltage vacuum circuit breaker equipment in recent years is to increase energy conservation and environmental protection, strengthen miniaturization, high reliability and less (free) maintenance switchgear research and development; The safe and reliable operation of the core part of the vacuum switch tube is of great significance ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the plug-in opening and closing switch adopted by the existing vacuum switch tube will change the state of vacuum pressure and easily cause wear and air leakage

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