Isolating and grounding switch mechanism and gas-insulated metal-enclosed switchgear

Abstract

The invention relates to an isolating and grounding switch mechanism and a gas-insulated metal-enclosed switchgear. The isolating and grounding switch mechanism comprises a housing, an isolating switch and a grounding switch. The isolating switch comprises an isolating switch movable contact and an isolating switch static contact, wherein the isolating switch movable contact and the isolating switch static contact are axially arranged in parallel. The grounding switch comprises a grounding switch movable contact and a grounding switch static contact. A transformer connection terminal, an external connection terminal used for accessing a main loop to a conductive structure, a guide contact holder and a connection contact holder are arranged inside the housing, wherein the guide contact holder and the connection contact holder are horizontally arranged side by side along the axial direction. The transformer connection terminal is arranged on the guide contact holder. The isolating switch static contact is arranged on the connection contact holder and is oriented towards the guide contact holder. The external connection terminal is arranged on the connection contact holder and is used for axially accessing the main loop to the conductive structure. The isolating switch movable contact is axially guided to pass through the guide contact holder and is provided with a closing station in contact cooperation with the connection contact holder. In this way, the problem in the prior art that an existing isolating and grounding switch mechanism is large in occupation space in the vertical direction and poor in part durability can be solved.

Description

technical field [0001] The invention relates to the field of high-voltage switchgear, in particular to an isolation grounding switch mechanism and a gas-insulated metal-enclosed switchgear. Background technique [0002] At present, the current transformer connection position and the busbar connection position of the isolation grounding switch mechanism of the gas-insulated metal-enclosed switchgear with 3 / 2 connection (hereinafter referred to as GIS) are generally arranged on the left and right, such as figure 1 As shown, the isolating grounding switch mechanism 101 can only be installed in a straight line with the current transformer 102, the bus bar 104, and the circuit breaker 103 during use, which results in a long 3 / 2 wiring interval, resulting in the current 3 / 2 Wiring the problem of large GIS footprint. In order to solve the problem that GIS occupies a large area, the existing technology has used L-shaped main conductive loops to reduce the footprint of GIS electrica...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an isolating and grounding switch mechanism to solve the problems that the current isolating and grounding switch mechanism takes up a large space in the vertical direction and the durability of parts is poor; in addition, the purpose of the present invention is to provide a Gas-insulated metal-enclosed switchgear for isolating and earthing switchgear

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