How to avoid the speed drop of DC motor?

The DC motor's long-term continuous operation will result in aberrant rotation speed, such as excessively high or low rotation speed, which would lower the equipment's working efficiency. What should we do to prevent the DC motor from running at an irregular speed?

1. Broken cage rotor bar: If the cage rotor is broken, the stator ammeter's pointer will swivel back and forth while the motor is running, and occasionally sparks will fly out of the explosion-proof motor while it is operating and make a buzzing sound. Use an iron powder test or a broken bar detector to determine Take the necessary corrective action in response to the broken bar's fault.

2. Low power supply voltage: After determining that the power supply voltage is too low, check the voltage at the input terminal of the explosion-proof DC motor.

3. Improper wiring of an explosion-proof motor's stator winding: If, during normal operation, the stator winding's D-shaped connection accidentally becomes a Y-shaped connection, it needs to be checked and fixed.

4. Overload: This indicates that the explosion-proof motor's low beginning torque is insufficient to pull rotating mechanical equipment and slow it down, therefore try to lighten the load.

The answer to the DC motor's very high speed is provided above. Please keep reading our articles to learn more about the DC motor.