Intelligent motor protector system

Abstract

The invention provides an intelligent motor protector system comprising a control monitor and a monitoring device, wherein the detection device and the control monitor are connected through wires, a single chip microcomputer (SCM) and a protection relay are arranged in the interior of the control monitor, an output end of the detection device is connected with an input end of the SCM, and an output end of the SCM is connected with is connected with an input end of the protection relay. A button and a display screen are arranged on the outer end face of the control monitor, an output end of the button is connected with an input end of the SCM, and the output end of the SCM is connected with an input end of the display screen. The intelligent motor protector system can measure a three-phase voltage, three-phase current and leakage current in real time, and the faults including a default phase, a short circuit, a locked-rotor, overload, phase unbalance, current leakage, an over-voltage, an under voltage, under-load and the like when an electromotor is ran can be detected and protected.

Description

technical field [0001] The invention relates to a protection device for a motor, in particular to an intelligent motor protector system. [0002] Background technique [0003] Due to the continuous development of electric power technology, it is required to increase the power and reduce the volume in the design of the motor, so that the heat capacity of the motor is getting smaller and smaller, and the overload capacity is getting weaker and weaker. In addition, due to the improvement of production automation, the motor is often required to operate in various motion modes such as frequent starting, braking, forward and reverse, and load change, so higher requirements are put forward for the protection device of the motor. [0004] Because the motor often works in extremely harsh environments such as humidity, high temperature, dust, corrosion, etc., and there are irregularities in the design of the motor and omissions in equipment management, the motor is more likely to be ...

AI Technical Summary

Problems solved by technology

[0004] Because the motor often works in extremely harsh environments such as humidity, high temperature, dust, corrosion, etc., and there are irregularities in the design of the motor and omissions in equipment management, the motor is more likely to be damaged, especially in the absence of phase , short circuit, locked rotor, overload, three-phase unbalance, leakage, overvoltage, undervoltage, light load and other faults occur more and more frequently

Images