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Motor protector applied to three-speed motor

A technology of electric motors and protectors, which is applied in the direction of motor generator testing, emergency protection circuit devices, instruments, etc., and can solve the problems of large product occupation, large customer investment, and increased maintenance

Pending Publication Date: 2021-03-02
沈阳碧成机电设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing motor protectors cannot directly meet the control and protection requirements of the three-speed motor and require multiple joint control, which will result in large customer investment, large product space, cumbersome control, complicated wiring, and increased maintenance.

Method used

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  • Motor protector applied to three-speed motor
  • Motor protector applied to three-speed motor
  • Motor protector applied to three-speed motor

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] see Figure 1-3 , a motor protector applied to a three-speed motor, comprising a control panel 1, a display screen 2 is arranged on one side of the control panel 1, a display button 3 and a start-stop button 4 are respectively installed on both sides of the display screen 2, and the display button 3 includes Low-speed display button 31, medium-speed display button 32, high-speed display button 33, stop display button 34 and fault display button 35, star...

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Abstract

The invention discloses a motor protector applied to a three-speed motor. The motor protector comprises a control panel, wherein a display screen is arranged on one side of the control panel, a display key and a start-stop key are installed on the two sides of the display screen respectively, a power supply module, a CPU module, an analog quantity input module, an analog quantity output module, aswitching value input module, a switching value output module, a control panel module and a communication module are arranged in the control panel. According to the motor protector applied to the three-speed motor, overload protection, open-phase protection, unbalance protection, locked-rotor protection, starting timeout, underload protection, underpower protection and the like are achieved through the switching value output module, the CPU module sends signals to a control center through the switching value output module, the analog quantity output module or the control panel module, and therefore, the implementation monitoring of the motor is realized, the investment cost of customers is saved, the equipment installation space is saved, and the protection pertinence is stronger.

Description

technical field [0001] The invention relates to the technical field of motor control and protection, in particular to a motor protector applied to a three-speed motor. Background technique [0002] With the wide application of power electronics technology in the field of transmission, the emergence of motor protectors has changed the old-fashioned control and protection methods and provided a simple, efficient and intelligent control and protection method. However, the existing motor protectors cannot directly meet the control and protection requirements of the three-speed motor and require multiple units to be jointly controlled, which will result in large customer investment, large product space, cumbersome control, complicated wiring, and increased maintenance. [0003] In view of these defects, it is necessary to design a motor protector applied to three-speed motors. Contents of the invention [0004] The purpose of the present invention is to provide a motor protect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/08H02H7/085H02H7/09G01R31/34
CPCG01R31/343H02H7/0822H02H7/0827H02H7/085H02H7/09
Inventor 韩宾陈涤菲
Owner 沈阳碧成机电设备有限公司
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