A low-voltage side grounding wire hanging device

Abstract

The invention discloses a low-voltage side grounding wire hanging device, which relates to the field of grounding wire hanging tools. 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 here is not firm; the grounding wire needs to be hung every time there is a power failure, and the hanging operation is frequent , time-consuming, low efficiency, small space margin on the outlet side of the low-voltage circuit breaker, and many safety hazards in the installation of grounding wires. The invention comprises a ground rod, a ground wire lap plate, a replaceable bolt connection part, and a pluggable insulated operating handle. Fix the hanging end of the grounding wire to the bolt of the low-voltage outlet terminal through the bolt connection part, and the grounding wire is lapped on the lapping plate of the grounding wire. The insulated and pluggable operating handle is convenient for repeated use, simple in structure, convenient in operation, and high in safety. It avoids the shortcoming of insufficient space on the outlet side of the low-voltage circuit breaker, increases the safety distance for grounding wire lapping, and makes the lapping of grounding wires stable and reliable, with fast lapping speed and high 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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