A protective device for high-power frequency conversion motor

Abstract

The invention discloses a protection device of a high power frequency conversion motor. The protection device comprises a motor protection device body, wherein a protection upper cover is arranged atthe top of the motor protection device body, the bottom of the protection upper cover is provided with a protection base, the top of the protection upper cover is provided with a handle, the handle and the protection upper cover are connected and fixed by screwing a nut, concave rails are arranged at the bottom at two sides of the protection upper cover, convex columns are arranged at positions, corresponding to the concave rails, of the top at two sides of the protection base. Due to arrangement of the protection upper cover and the protection base, the motor protection device has a better protection effect when in use; due to the concave rails and the convex columns, the protection device is easy and fast to disassemble and assemble, is highly stable, takes less time to install, is easyto maintain and dismount, uses fewer tools, lowers the working difficulty, saves time, prolongs the service life of the motor, and protects the motor from damage.

Description

technical field [0001] The invention belongs to the technical field of motor protection devices, and in particular relates to a protection device for high-power variable frequency motors. Background technique [0002] With the rapid development of power electronics technology and new semiconductor devices, AC speed regulation technology has been continuously improved and improved, and gradually improved frequency converters have been widely used in AC motors due to their good output waveforms and excellent performance-price ratio. [0003] There are certain problems in the use of existing motor protection devices. The installation and disassembly of the motor protection device is troublesome. It usually takes a long time to install and fix it, and many tools are required, which leads to the instability of the protection device. Sexuality, time-consuming and labor-intensive, wasting a lot of time. The existing motor protection device has poor shockproof effect when it is used...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a protection device for a high-power variable frequency motor, to solve the problems in the use of the existing motor protection device proposed in the above-mentioned background technology. It takes a long time to be installed and fixed, and many tools are needed, which leads to the lack of stability of the protection device, which is time-consuming and labor-intensive, and wastes a lot of time. The existing motor protection device has a shockproof The effect is not good. When the motor uses the protection device, the collision will cause great damage to the motor. This is not only difficult to repair and disassemble, but also wastes a lot of time and energy, reducing the service life of the motor. The existing The heat dissipation performance of the motor protection device is poor when it is in use. Because the motor protection device will wrap most of the components of the motor when it is used for protection, this reduces the heat dissipation performance of the motor. After the motor is used for a long time, the temperature If it is too high, it will cause damage to internal devices, reduce the service life, increase the difficulty of work, and reduce economic benefits, etc.

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