1. The power supply voltage of the permanent magnet motor is too high, so that the magnetic flux density of the core is oversaturated, and the temperature rise of the motor is too high. If the power supply voltage exceeds the standard, it should be contacted with the power supply department, and then a solution is given.
2, the power supply voltage is too low, the motor temperature rise is too high under the rated load: If the voltage drop of the power line is too large, it is recommended to replace the thicker power line; if the power supply voltage is too low, you can contact the power supply department And then increase the power supply voltage.
3. When the wire is burned, the iron core is burned, which increases the iron loss: Then we can do the iron core inspection test and repair the iron core to eliminate the fault.
4. Fixed rotor core rubbing: first check the cause of the fault. If the gap between the bearings exceeds the limit, the new bearing should be replaced. If the shaft is bent, it needs to be investigated and treated. When the core is loose or deformed, the core should be treated. Eliminate the fault.
5. The surface of the winding is full of dust or foreign matter, which affects the heat dissipation of the permanent magnet motor: it is recommended to clean or clean the motor and keep the motor ventilated and communicated smoothly.
