Three-station isolation switch

Abstract

The invention discloses a three-station isolation switch which comprises a three-station isolation switch body and an operating mechanism, and is characterized in that the three-station isolation switch body comprises a moving contact assembly, a static contact assembly, a grounding contact assembly, a moving contact and a moving contact driving mechanism, and the moving contact is hinged with themoving contact assembly; the moving contact driving mechanism is connected with the moving contact and used for driving the moving contact to rotate around the hinge point of the moving contact, thestatic contact assembly and the grounding contact assembly are both located on the motion trail of the moving contact, and the operating mechanism is connected with the moving contact driving mechanism and used for controlling the driving action of the moving contact driving mechanism. The isolation switch is provided with a stable main body framework, the position design of each contact assemblyis reasonable, the stable moving contact driving mechanism drives the moving contact to move to each contact assembly to finish the turn-on action, the turn-on in place is ensured, and stable protection is provided for a power supply system.

Description

technical field [0001] The invention relates to the field of isolating switch equipment, in particular to a three-position isolating switch. Background technique [0002] The isolating switch is mainly used in the power supply system in the field of rail transit. When the power supply system fails, it plays a better protective role. The three-position isolating switch includes the working position, the disconnecting position and the grounding position. Generally, the linkage mechanism drives the moving contact. The head moves between various positions to complete the opening, closing and grounding actions. The existing three-position isolating switch often has the situation that the moving contact does not move in place, resulting in a deviation in the closing position and insufficient protection for the power supply system. Contents of the invention [0003] The purpose of the present invention is to provide a three-position isolating switch to solve the problems raised i...

AI Technical Summary

Problems solved by technology

[0002] The isolating switch is mainly used in the power supply system in the field of rail transit. When the power supply system fails, it plays a better protective role. The three-position isolating switch includes the working position, the disconnecting position and the grounding position. Generally, the linkage mechanism drives the moving contact. The head moves between various positions to complete the opening, closing and grounding actions. The existing three-position isolating switch often has the situation that the moving contact does not move in place, resulting in a deviation in the closing position and insufficient protection for the power supply system.

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