A live installation method of a low-voltage arrester

Abstract

The invention discloses an electrified installation method for a low-voltage lightning arrester, and belongs to the field of lightning arresters. A hollow double-head operating rod is arranged; a first concave hole is formed in the upper end of the double-head operating rod; a second concave hole is formed in the lower end of the double-head operating rod; the upper end and the lower end of the double-head operating rod are connected into a whole through an insulating rod; and a corresponding installation open hole is formed in the corresponding bottom edge of a binding post at the lower end of an operating knife switch in a field cabinet to serve as a channel for a low-voltage lightning arrester body and the double-head operating rod to enter the field cabinet. An original transverse working mode of installing the lightning arrester from the front side of the field cabinet is changed into a vertical working mode of conveying the low-voltage lightning arrester into the cabinet from thebottom of an installation cabinet and performing installation, so that the electrified installation of the low-voltage lightning arrester is realized, and great convenience is provided for maintenance personnel to quickly maintain and replace the low-voltage lightning arrester on the scene of a power supply line. The method can be widely applied to the field of field operation maintenance or replacement work of the low-voltage lightning arrester with a working voltage lower than 1-0.5kV.

Description

technical field [0001] The invention belongs to the field of lightning arresters, in particular to a lightning arrester used for overvoltage protection of a low-voltage power system. Background technique [0002] Surge arrester is an electrical device used to protect electrical equipment from transient overvoltage (lightning strike, operation, steep wave) and quickly cut off power frequency continuous current. It is usually connected in parallel with the protected line or equipment. [0003] Its internal main components are non-linear resistors (such as zinc oxide resistors), which are in a high-resistance state under normal power frequency voltage due to their good non-linearity, and the arrester will not operate. When the overvoltage occurs, the action resistance sheet of the arrester is turned on, and the overvoltage shock current absorbs part of the energy through the resistance sheet and then leaks into the ground, thereby reducing the amplitude of the overvoltage, redu...

AI Technical Summary

Problems solved by technology

[0008] Due to the limited internal space of the existing installation cabinet, and the existing screw installation holes are all set horizontally, during the installation work of the low-voltage arrester using the existing wrench, the metal wrench is very easy to touch the surrounding live parts, which is very difficult. It is not conducive to the safe operation of live equipment and the personal safety of operators

Therefore, under the existing conditions, the work of replacing the low-voltage arrester usually needs to be carried out in a power outage state, which is not convenient for a single person to operate in a live state, which affects the continuous operation rate of the power supply equipment and brings power consumption to the power receiving user. Inconvenience

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