High-voltage isolating switch

Abstract

A high-voltage isolating switch comprises a supporting structure, an isolating mechanism, a transmission mechanism and an operating mechanism, wherein the isolating mechanism, the transmission mechanism and the operating mechanism are arranged on the supporting structure, and the transmission mechanism is in linkage connection with the isolating mechanism and the operating mechanism; and the isolation mechanism comprises at least one phase of main loop which is synchronously controlled, each phase of main loop comprises an isolation contact structure and a grounding contact structure, the transmission mechanism is driven by the operating mechanism to drive an isolation moving contact of the isolation contact structure and a grounding moving contact of the grounding contact structure to perform linear reciprocating motion so as to complete switching-on and switching-off actions, when the isolation contact structure is switched on, the grounding contact structure is switched off synchronously, and when the isolation contact structure is switched off, the grounding contact structure is switched on synchronously. The switching-on and switching-off of the isolation contact structure and the grounding contact structure of the isolation mechanism are both driven by the transmission mechanism, and the switching-on and switching-off actions are both linear reciprocating motions, so that excessive space is prevented from being occupied.

Description

technical field [0001] The invention relates to the field of isolating switches, in particular to a high-voltage isolating switch. Background technique [0002] The high-voltage isolating switch is an important switching device in the electrical system of power plants and substations. The high-voltage isolating switch ensures the safety of high-voltage electrical appliances and devices during maintenance work, and plays the role of isolating voltage. In the existing high-voltage isolating switch, the isolation and grounding are two independent systems. The cost of the two independent systems is high and the coordination is poor. In addition, a reliable interlock mechanism needs to be installed between the two independent systems to avoid misoperation. In addition, The isolating switch realizes the opening and closing action through the rotation of the main circuit. The main circuit is equipped with terminals and insulators. At least one of the insulators participates in the ...

AI Technical Summary

Problems solved by technology

In the existing high-voltage isolating switch, the isolation and grounding are two independent systems. The cost of the two independent systems is high and the coordination is poor. In addition, a reliable interlock mechanism needs to be installed between the two independent systems to avoid misoperation. In addition, The isolating switch realizes the opening and closing action through the rotation of the main circuit. The main circuit is equipped with terminals and insulators. At least one of the insulators participates in the rotation and will be affected by torque or bending moment. There are at least two insulators in the main circuit of each phase. Due to the need to meet the insulation distance requirements, too much space is occupied in the interphase or upper space, making the overall structure too large and complex, and it is easy to reduce the installation quality due to poor matching of the supporting structure.

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