Wall-mounted three-station Internet-surfing isolation switch and power supply system

Abstract

The invention discloses a wall-mounted three-station Internet-surfing isolation switch and a power supply system. The isolation switch comprises a first insulating support column, a second insulating supporting column and a third insulating supporting column, wherein the first insulating supporting column is provided with a first incoming line plate and an isolation moving contact assembly connected with the first incoming line plate; a second incoming line plate and an isolation static contact assembly connected with the second incoming line plate are arranged on the second insulating support column; the third insulating supporting column is arranged opposite to the second insulating supporting column, and a third wire inlet plate and a grounding static contact assembly connected with the third wire inlet plate are arranged on the third insulating supporting column; the isolation moving contact assembly can rotate between the isolation static contact assembly and the grounding static contact assembly, and one of the isolation moving contact assembly and the grounding static contact assembly is selected to be connected with the isolation static contact assembly and the grounding static contact assembly. According to the system, the size of the switch is reduced, so the switch is more suitable for being installed in a rail-mounted area, no on-grid isolation and grounding locking wiring are needed, and on-grid isolation switching-on mistaken power transmission is avoided when the grounding switch is switched on; and a high-definition camera and an electric operating device are adopted, so an action state of the isolating switch can be monitored in real time and remote operation can be performed.

Description

technical field [0001] The invention belongs to the technical field of rail transit power supply, and more specifically relates to a wall-mounted three-station on-line isolating switch and a power supply system. Background technique [0002] The isolating switch is widely used in the subway power supply system, and it is the main stop power transmission device connecting the power supply system of the traction substation and the catenary system. The three-position isolating switch mainly includes isolating static contacts, isolating moving contacts and grounding static contacts, etc. The moving contacts are driven by the linkage mechanism to complete the opening, closing and grounding actions. [0003] The existing rail transit three-position isolating switch has a relatively complex structure and a large volume, and the cable enters and exits from the lower part of the isolating switch, so it is difficult to install it safely and reasonably in the track area; usually it can...

AI Technical Summary

Problems solved by technology

[0003] The existing rail transit three-position isolating switch has a relatively complex structure and a large volume, and the cable enters and exits from the lower part of the isolating switch, so it is difficult to install it safely and reasonably in the track area; usually it can only be installed in a specially set isolating switch in the station The cabinet room increases the project investment; the action position of the isolating switch cannot be observed during the maintenance work of the operating unit, which has certain safety risks and is difficult to meet the needs of operation and maintenance; the accuracy and reliability of the switch action are poor, and the operation is troublesome

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