Electrified miniature bus cutter

Abstract

The invention discloses an electrified miniature bus cutter. The cutter comprises a handle, a supporting frame, a fixed blade and a movable blade, wherein the top surface of the supporting frame is fixed on the handle to be connected with the handle to form an L shape, the top surface of the fixed blade is fixedly arranged at one end of the bottom surface of the supporting frame, the top surface of the movable blade is movably arranged at the other end of the bottom surface of the supporting frame in the horizontal direction, the left side surface of the movable blade and the right side surface of the fixed blade form a cutting opening, the outer surface of the handle and the outer surface of the supporting frame are coated with a first insulation shell, the left side surface, the bottom surface, the front surface and the back surface of the fixed blade are coated with a second insulating shell, and the right side surface, the bottom surface, the front surface and the back surface of the movable blade are coated with a third insulation shell. The cutter has the advantages that the insulation performance is good, risk points existing in secondary miniature bus cut-off work in the replacement process of a protective screen are reduced, electric power accidents are reduced, and meanwhile, the working efficiency is improved.

Description

[0001] This application is a divisional application submitted on November 9, 2015 with the title of the invention "Live Small Busbar Cutter" and the application number 201510757227.5. technical field [0002] The invention relates to a power maintenance tool, in particular to a live small busbar cutter. Background technique [0003] At present, for the protective screens with a voltage level of 10kV and above produced by domestic relay protection device manufacturers, the AC and DC power supplies and the secondary AC voltage required by the device must be connected from the small busbar on the top of each installation screen. The small busbars are mostly made of solid pure copper due to the requirements of the regulations, and the small busbars in the secondary installation project of the new substation are laid in the way of the whole connection, that is, although a row of protective screens are installed separately, the small busbars on the top of the screen But it is a wh...

AI Technical Summary

Problems solved by technology

However, it is very dangerous to use cable cutters, because the jaws of the cable cutters are all made of metal materials. Opening the jaws can easily cause a short circuit between two adjacent small busbars or cause the small busbars to be grounded due to accidental contact with the top of the protective screen during cutting. Waiting for an accident

Relay protection personnel often use insulating tape to insulate the jaws before use. The single insulating tape often falls off due to excessive force of the cable clamp during the cutting process or breaks when it touches a sharp object. This requires personnel to cut off a The small busbar needs to be inspected once. If the insulation is damaged, it needs to be insulated again. The operation is cumbersome and the safety factor is low.

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