Gas insulated bus grounding device

Abstract

The invention discloses a gas insulated bus grounding device which comprises the components of an inflation chamber body which comprises an inflation chamber and a pressure releasing channel, wherein a pressure releasing device is arranged between the pressure releasing channel and the inflation chamber, and the inflation chamber is provided with a self-sealing valve; six bus sleeves which are mounted on a side plate of the inflation chamber, wherein two bus sleeves are in one phase and are arranged in a facing manner; three phase main buses which are arranged in the inflation chamber, wherein each phase main bus is arranged between the two bus sleeves of a corresponding phase, and each phase main bus is connected with the main bus of an external switchgear through the two bus sleeves of the phase; three phase grounding assemblies in the inflation chamber, wherein the upper end of each phase grounding assembly is connected with the main bus of the corresponding phase, and a guide rod lower supporting in each phase grounding assembly is connected with one side plate in the inflation chamber; and a driving mechanism which drives the three-phase grounding assembly for realizing grounding switching-on and grounding switching-off. The gas insulated bus grounding device realizes reliable grounding of the main bus of the gas insulated switchgear and furthermore has advantages of high on-and-off capability, small size and high safety.

Description

technical field [0001] The invention relates to the technical field of gas-insulated switch cabinets, in particular to a grounding device for gas-insulated busbars. Background technique [0002] The grounding switch is an important component of the switchgear. It is usually installed inside the switchgear. When the power supply line or equipment fails or is under normal maintenance, the grounding switch can be closed to realize the grounding of the main busbar or branch busbar. [0003] Gas-insulated switchgear is a high-tech product in the field of medium-voltage switches. The voltage level is generally 12-40.5kV, and the short-circuit current withstand capacity is generally below 40kA. It installs high-voltage components such as circuit breakers, disconnectors, and grounding switches in a sealed The metal cabinet is filled with low-pressure SF6 gas or other insulating gas as an insulating medium to achieve isolation from the external environment and improve the stability o...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention lies in that the current grounding switch has weak insulation ability and cannot meet the application of 40.5kV voltage level. The shortcomings of maintenance-free, provide a gas-insulated busbar quick grounding device that can be connected to the main busbar of the gas-insulated switchgear, and realize the reliable grounding function of the main busbar of the gas-insulated switchgear

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