EOCR Motor Protector Failure Cause 1Overload: When the motor is subjected to work that exceeds the rated load, it will cause the current to be too high and the temperature to be too high, causing the protector to trip. 2.Short circuit: A short circuit in the internal windings of the motor causes the protector to trip. 3.Overheating: The motor temperature is too high due to long-term high-speed operation or poor heat dissipation, and the protector protection is triggered. 4.Phase-to-phase short circuit: A short circuit between two phases occurs when the motor is working, which can cause the motor to burn out. 5.Unexpected failures: Failure of other components of the motor, such as damaged bearings, unbalanced drivetrains, etc., can lead to protector failure. 
The protector is an electrical device used to protect the motor, and its main function is to monitor the status of the motor and protect the motor from further damage when there is an abnormal situation in the motor.
Take the following steps to resolve the issue:1Overload: The load should be reduced or a more powerful motor should be replaced. 2.Short circuit: The cause of the short circuit should be investigated and repaired in time. 3.Overheating: Heat exchange measures can be taken, such as adding radiators, fans, etc. 4.Other reasons: Actions should be taken on a case-by-case basis.
The application of intelligent motor protector enhances the centralized control of the motor in industrial production, effectively protects the motor, and has a very sensitive protective effect in the process of starting and running, such as phase failure, overload, short circuit, and stalled rotor, which can protect the motor in a timely, effective and reliable manner, improve the protection level of equipment, reduce the probability of burning the motor in time because of fault discovery, and provide a guarantee for the safety of production.
In the daily use of machine tools, overload and phase loss are common faults of motors in various parts of machine tools. EOCR-SE2 has overload, phase loss and locked-rotor protection, it detects the running current of the motor to determine whether it is operating normally, when a fault occurs, EOCR-SE2 will stop the motor running, and give a fault prompt, so as to avoid damage to the motor.