Three-work-station dual-ground-connection load switch

Abstract

The invention discloses a three-work-station dual-ground-connection load switch which comprises a support and an insulating spindle. The insulating spindle is driven by a driving mechanism, a plurality of contact cutters extending in the radial direction are arranged on the insulating spindle, the contact cutters can rotate to the switch-on position along the insulating spindle to switch on an upper static touch seat and a square conductor, the upper static contact seat is connected with an input cable, a high-voltage fuse is in serial connection between the square conductor and the output cable, two output lines are arranged at the output end of the high-voltage fuse, one output line is connected with the output cable, and the other output line is connected with an auxiliary ground connection contact seat. When the contact cutters rotate to the switch-off position along the insulating spindle, circuital current is cut off. When the contact cutters rotate to the ground connection position along the insulating spindle, the auxiliary ground connection contact seat and the square conductor are connected with a main ground connection seat which is always connected with the ground. The load switch can simultaneously achieve operation of three work stations and dual ground connection of the high-voltage fuse. Furthermore, the load switch is convenient to install and maintain, improves overhauling and replacing work efficiency and improves operation safety.

Description

technical field [0001] The invention relates to the technical field of electrical switches, in particular to a three-position double-ground load switch. Background technique [0002] When a fault such as current overload or short circuit occurs in the circuit, the fuse will blow itself to protect the load line from damage. In the process of repairing and replacing fuses, especially in high-voltage circuits, in order to fully protect the personal safety of maintenance personnel, it is first necessary to ground both ends of the high-voltage fuse. The traditional three-position load switch can only ground one end of the high-voltage fuse, while the other end of the high-voltage fuse needs to be realized through other matching grounding switches, that is, more than two switches are required to be used together to achieve high-voltage fusing. Double grounding at both ends of the high-voltage fuse, if you want to achieve simultaneous grounding at both ends of the high-voltage fus...

AI Technical Summary

Problems solved by technology

Although the grounding switch can ground both ends of the high-voltage fuse at the same time, since the switch and the high-voltage fuse are connected in parallel on the main line, if the main line is to conduct current, it must be used in conjunction with other load switches. , so this grounding switch does not reduce the workload of overhauling and replacing high-voltage fuses

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