Three cases where the three-phase motor current is too high
4-ventilation cooling problem
1. The ambient temperature is too high, so the inlet air temperature is high.
2. There are debris in the air inlet to block the air, which makes the air intake small.
3. Excessive dust inside the motor affects heat dissipation.
4. The fan is damaged or reversed, resulting in no wind or small air volume.
5, no windshield or motor end cover is not equipped with windshield, resulting in no motor wind path.
5-Rework motor problem
The motor starting current of the repaired motor reaches 66% or more, and the motor operates frequently, which also causes high current and overheating of the motor.
6-series resistance problem
Wire-wound motors and series resistors do not match, and the motor operates frequently, which also causes high currents and overheating of the motor.
7-motor vibration problem
Excessive motor vibration may also cause high motor current, reasons and treatment methods:
1. Rotor imbalance - leveling balance
2, pulley imbalance or shaft extension bending - check and correct
3. The motor is not aligned with the load axis - check the axis of the unit
4, the motor is not properly installed - check the installation and foot screws
5, the load suddenly overweight - reduce the load
