Low-voltage side grounding wire hanging device

Abstract

The invention discloses a low-voltage side ground wire hanging device, and relates to the field of ground wire hanging tools. The lower end of the outgoing line of a 0.4 kV circuit breaker is not provided with a special ground wire hanging end, only a ground wire is hung at a lap joint cable bolt, and the ground wire is hung infirmly at the lap joint cable bolt; the ground wire needs to be hung ineach power failure, hanging operation is frequent, consumed time is long, efficiency is low, the space allowance of the wire outlet side of the low-voltage circuit breaker is small, and many potential safety hazards exist in ground wire erection. The device comprises a grounding rod, a grounding wire lapping plate, a replaceable bolt connecting part and a pluggable insulating operating handle. The ground wire hanging end is fixed on the low-voltage wire outlet end bolt through the bolt connecting part, the ground wire is lapped on the ground wire lapping plate, the insulated pluggable operating handle is convenient to repeatedly share, the structure is simple, the operation is convenient, the safety is high, the defect of insufficient space of the wire outlet side of the low-voltage circuit breaker is avoided, the lapping safety distance of the ground wire is increased, grounding wires are stable and reliable in lap joint, high in lap joint speed and high in efficiency.

Description

technical field [0001] The invention relates to the field of grounding wire hanging tools, in particular to a low-voltage side grounding wire hanging device. Background technique [0002] The types of 0.4kV low-voltage outlets include: low-voltage outlets in power distribution rooms, low-voltage outlets in box-type transformers, outlets in low-voltage cable branch boxes, and 0.4kV outlets in column-mounted transformers. At present, there is no dedicated grounding wire hanging end at the lower end of the 0.4kV circuit breaker outlet, resulting in the following problems: [0003] 1. There is no special grounding wire hanging end at the lower end of the outlet of the 0.4kV circuit breaker, only the grounding wire is hung at the lap cable bolt, and the grounding wire hanging here often falls off and is not firm. [0004] 2. The grounding wire needs to be installed every time there is a power outage. Operators frequently install the grounding wire, and the longest time spent in ...

AI Technical Summary

Problems solved by technology

[0003] 1. There is no special grounding wire hanging end at the lower end of the 0.4kV circuit breaker outlet, only the grounding wire is hung at the lap cable bolt, and the grounding wire often falls off here and is not firm

[0004] 2. The grounding wire needs to be installed every time there is a power outage, and the operator frequently installs the grounding wire, and the longest time spent in each link of the switching operation is the installation of the grounding wire, accounting for 45.5%

It takes a long time to hang the ground wire, and the efficiency of switching operation is low

[0005] 3. When the low-voltage outgoing line of the box-type substation needs to add a circuit, since the low-voltage outgoing line side in the box-type substation cannot be connected to the grounding wire, it is necessary to hang the grounding wire at the lower branch box at the interval of each outgoing line. The work efficiency is low and the time is long.

[0006] 4. The cable spacing on the outlet side of the low-voltage circuit breaker is greater than the 20mm required by the specification, and the margin between phases and phases is not particularly large. If a special copper plate for hanging the grounding wire is directly installed on the equipment, the safety distance will be unreliable and increase the redundancy. The exposed conductor area increases the potential safety hazard

[0007] Due to the large number of low-voltage circuit breakers in power distribution rooms and box-type transformers and increasing year by year, the number of grounding wires hanging on the 0.4kV low-voltage side is also increasing, the operation is frequent, and the time is long. The overall installation efficiency is low and safety hazards are high. Therefore, , requires a special grounding wire hanging end to improve the efficiency and reliability of the grounding wire hanging

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