Motor operation overheating causes and treatment - News - Global IC Trade Starts Here Free Join

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

MOS power IC full range

KKST patch plug-in active passive crystal oscillator hot sale 24.576000MHZ

When the motor is overheated during operation, the operation of the motor may be unstable or even cause it to be inoperable. There are many reasons why the temperature of the motor is too high. We can handle it according to the corresponding method and try to avoid its impact on production.

1. When the instantaneous voltage of the motor exceeds 10% of the rated voltage, or the instantaneous voltage of the motor is lower than 5% of the rated voltage, the motor will generate heat and temperature rise under the rated load. In this case, the voltage should be checked and adjusted.

2. The imbalance of the three-phase power supply voltage of the motor will also cause the motor to heat up. This is because when the three-phase power supply voltage imbalance exceeds 5%, the three-phase current imbalance will be caused. The solution is to check and adjust the voltage.

3. The contact problem of the power switch of the motor and the disconnection of the fuse of one phase will cause phase loss operation, which will cause the temperature of the motor to rise. The solution is to repair or replace the damaged component.

4. There is an error in the winding connection of the motor, which causes the motor running under the rated load to overheat. The solution is to correct the wiring error of the winding wire.

5. The stator winding of the motor is short-circuited or grounded between turns, which causes the current of the motor to increase and the temperature rises. The solution is to add insulation to the center or directly replace the winding.

6. The cage rotor broken wire of the motor or the wound rotor coil joint is loose, which will cause the current of the maintenance net to increase and heat up. The countermeasure is to weld or replace the rotor.

7. When the bearing of the motor is seriously worn, it will generate a large amount of rubbing and generate heat. The solution is to check whether the bearing is loose or not, and whether the stator and the rotor have poor matching.

8, the motor load is too large is also the cause of overheating, reduce the load or replace the high-power motor can solve the overheating problem.

9, motor start too frequent, the use of ambient temperature is too high, poor ventilation, etc. will also lead to excessive motor temperature, reduce the number of starts, reduce the ambient temperature, ensure the smooth flow of the air, eliminate dust and oil, keep the fan running well Can help solve similar overheating problems.