Wiring device of low-pressure high-power motor

Abstract

The invention relates to a wiring device of a low-pressure high-power motor, comprising a wiring box cover, a box seat, insulation wiring boards, a connecting piece, a wire outlet cover board and stuffing boxes, wherein the wiring box cover and the box seat are assembled at a junction position. The wiring device of a low-pressure high-power motor is characterized in that the upper row of insulation wiring boards and the lower row of insulation wiring boards are combined and arranged on fixed racks in a wiring box by the connecting piece; the wiring device of a low-pressure high-power motor also comprises three phases of winding output wire connection sheets, wherein the number of each phase of winding output wire connection sheets is 1 to 4, and all the winding output wire connection sheets are designed as n shape; each n-shaped winding output wire connection sheet is arranged on the insulation wiring boards through one side edge on each n-shaped winding output wire connection sheet by the connecting piece, the other side edge of each n-shaped winding output wire connection sheet is connected with a power supply connection sheet or / and a flow equalization connection sheet by the connecting piece, and the back of each n-shaped winding output wire connection sheet is provided with two wiring terminals; the wiring terminals are arranged on the power supply connection sheet; and the number of the stuffing boxes is six. The invention can meet the wiring requirements of each phase of winding output wires from 2 to 8 and each phase of power supply wiring wires from 1 to 4 in the motor and can adapt to the requirement of the star-angle conversion starting of the motor. The invention has reasonable design and convenient wiring and is safe and reliable.

Description

technical field [0001] The invention relates to other accessories of a motor casing, in particular to a wiring device suitable for winding outgoing wires and power supply wiring of a low-voltage high-power motor with a voltage below 690V and a current within 3000A. Background technique [0002] As the development and production of low-voltage high-power motors in my country gradually mature, they are widely used in petroleum, chemical, metallurgy, cement, papermaking and other industries to drive various mechanical equipment. The wiring device is an important accessory of the motor, which mainly includes the wiring terminals arranged in the junction box, and the wiring terminals lead out the motor windings and other wirings that are matched with the motor. With the continuous increase of motor power and current, the existing motor junction box structure can not meet the technical requirements of large conduction current, so the majority of technical personnel are devoted to ...

AI Technical Summary

Problems solved by technology

However, in the row-type junction box structure disclosed in the above-mentioned public documents, the cooperation between each vertical wiring copper bar and the terminal post can only connect 4 outgoing wires at most. When the motor power is large and the windings have many outgoing wires, this junction box structure is not applicable. ; The vertical wiring copper bar is fixed and can only be used for delta connection, which cannot meet the needs of star-to-diagonal switching and starting of the motor; there are only 3 stuffing boxes at the outlet of the junction box, which cannot adapt to the situation where there are many power connections

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