Power supply connection box of high-voltage motor

Abstract

The invention discloses a power supply connecting box of a high-voltage motor, which comprises involutedly connected connection box covers, a box base, a stator lead cable, a power supply cable and a fixedly connecting assembly, wherein the power supply cable is fixed with the box base through the fixedly connecting assembly and extends into the box base through a lead inlet on the wall of the box base. The power supply connection box is characterized in that the bottom of the connection box base is provided with an insulation lead board, the lead board is provided with a plurality of lead outlets, the stator lead cable extends into the box base through the lead outlets, the lead board is assembled with a fixed lead clamp, the top of a clamp body is provided with a clamp block, the fixed lead clamp body and the clamp block are provided with clamp grooves, the stator lead cable is clamped and fixed into the clamp grooves, and after the power supply cable and a connection lug which is connected to the end part of the stator lead cable are connected by adopting a connecting piece, the exposed electrified bodies are covered by an insulating piece. The least electric clearance and the creepage distance of the electrified bodies are ensured because positions among connection cables are fixed and the electrified bodies are insulated; and the invention has the advantages of reasonable design, simple structure and low product cost.

Description

technical field [0001] The invention relates to a casing accessory of a motor, in particular to a power supply wiring device of a high-voltage motor capable of ensuring the electrical clearance and creepage distance of a bare electrified body. Background technique [0002] The voltage level of the high-voltage motor is very high, usually 6000 volts and 10000 volts, so the insulation method of the motor power wiring device is very important. The wiring cable of the motor is divided into two parts, one part is the stator outlet cable of the motor, and the other part is the power supply cable that provides power for the motor to run. The national standard GB 14711-2006 "Safety Requirements for Small and Medium-sized Rotating Electric Machines" stipulates that for a motor with a rated voltage of 6000 volts, the minimum electrical clearance of different live parts in the junction box is 50mm, and the minimum creepage distance is 80mm; for a motor with a rated voltage of 10000 vol...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies in the prior art that tend to be skewed when the wiring terminal is fixedly connected to the wiring cable, the minimum electrical clearance and the minimum creepage distance of the exposed charged body cannot be guaranteed, and the product cost is high, the present invention provides a power supply wiring device for high-voltage motors , the power wiring device is not only reasonable in design, simple in structure, low in cost, but also reliable in insulation, which can ensure the minimum electrical clearance and minimum creepage distance of live cables

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