Overhaul the power box

Abstract

The invention discloses an overhauling power box which comprises a box body. The box body is internally divided into a power supply chamber, a switch chamber, a power terminal chamber and a socket terminal chamber. Cable connectors on the left side and the right side of the power supply chamber are connected with a wire-feeding cable and a wire-discharging cable respectively. The front face of the switch chamber is provided with a switch chamber door, and the switch chamber door is further provided with a turning waterproof glass door. An air switch QF1, an electric leakage protector LJ1, a PE wire overcurrent protector PEB, an electric leakage protector LJ2 and an air switch QF2 are sequentially arranged behind the waterproof glass door in the switch chamber from left to right. The front face of the power terminal chamber is provided with a power terminal chamber door. The power terminal chamber is internally provided with a plurality of quick-wiring terminals. The front face of the socket terminal chamber is provided with a socket terminal chamber door. Cable wire-feeding openings are formed below the power terminal chamber and the socket terminal chamber and are provided with cable holders. The overhauling power box has the advantages that the problems that it is difficult to conduct wiring on the power box, and a safety interlock is lacked and earth screen shunt on two sides of an electric welding machine burns a protective earthing conductor are solved, the wiring is convenient and fast to conduct, and safety performance is high.

Description

technical field [0001] The invention relates to a maintenance power box. Background technique [0002] The maintenance power supply box is a small distribution box (cabinet, column) widely used in industrial and mining enterprises and in the society, and has two types: fixed type and mobile type. The main purpose of the maintenance power supply box is to catch the fire of the electric welding machine, followed by temporary lighting and single-phase electric tools, and sometimes it is used for power supply of electric heating equipment or motor test run. Its general structure is composed of distribution box shell, several low-voltage air switches, control transformers, electrical terminals, plugs and sockets and other components. At present, the common problems in overhauling the power box are as follows: [0003] 1. The bus-type power supply structure makes it difficult to connect incoming cables. Bus-type power supply refers to the connection of multiple power boxes on o...

AI Technical Summary

Problems solved by technology

[0009] The present invention is to avoid the disadvantages in the above-mentioned prior art, and provides a maintenance power box to solve the problems of difficult wiring of the power box and lack of safety interlock, and improve wiring efficiency and safety

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