'Yi' shape insulating embraced mast for on-load replacement of high pressure cascade fuse

Abstract

The invention discloses a 'yi' shape insulating embraced mast for on-load replacement of a high pressure cascade fuse, and relates to an insulating embraced mast. In the prior art, potential safety hazards are large when an operation of 10 kV on-load replacement of the pressure cascade fuse is conducted. The on-load 'yi' shape insulating embraced mast comprises an insulating bar, and wire locking devices which are arranged at the end part of the insulating bar, wherein the insulating bar comprises an upper bar and a lower bar, the middle part of the upper bar and the lower bar is connected through a connecting piece, and the connecting piece comprises a clamping piece used for fixing the insulating rod on a cross arm, a loosening-tightening component used for achieving the looseness and tightness operations of the clamping piece, and a limiting component used for preventing the separation of the upper rod and the lower rod when the clamping piece is loose, the wire locking devices are arranged at the upper end of the upper bar and the lower end of the lower bar. According to the technical scheme, on-load 'yi' shape insulating embraced mast makes it convenient for simultaneous locking of upper and lower leads respectively, and makes it convenient for the replacement of the high pressure cascade fuse; meanwhile, replacement speed and replacement efficiency of the cascade fuse are promoted, metal stress of operation personnel is lowered, and operation safety is improved.

Description

technical field [0001] The invention relates to an insulating holding rod, in particular to an insulating holding rod for replacing a high-voltage drop-out fuse with load. Background technique [0002] At present, there is no special tool for fixing the upper and lower drain wires of the fuse when replacing the high-voltage drop-out fuse on a 10kV line with load. In this case, the approximate steps are: [0003] a) Install insulated shunt lines and bypass short circuit; [0004] b) Remove the upper and lower drain wires of the fuse; [0005] c) Replace the drop-out fuse; [0006] d) Lap the upper and lower drain wires of the fuse; [0007] e) Remove the insulated shunt wire. [0008] There are roughly two security risks: [0009] 1. After installing the insulated shunt wire and bypassing the short circuit, it is necessary to tightly insulate the connection between the insulated shunt wire and the lower lead of the fuse, and temporarily fix it with an insulating rope. ...

AI Technical Summary

Problems solved by technology

In the process of replacing drop-out fuses, when the human body is at the ground potential and touches the connection or the insulation and shielding of the connection is not tight, a ground fault may occur and cause electric shock injury.

Due to factors such as the compact layout of the distribution line device and the small space, when the live lead wire is temporarily fixed with an insulating rope, it will swing, and there may be unsafe hazards such as phase-to-phase short circuit or grounding.

[0010] 2. In the traditional operation mode, tight insulation and shielding are required in the process of disassembling and installing the upper and lower drain wires of the fuse. Whether the insulation shielding is tight or not will directly affect the normal operation

Moreover, in this complex operation process, for the workers, the more shielding, the longer the psychological pressure on the workers, the greater the psychological pressure of the workers, and there will naturally be certain potential safety hazards.

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