Three-Phase Asynchronous Motor to Check Whether the Lubrication is Normal

Three-phase asynchronous motor maintenance Check whether the appearance of the motor has cracks, whether the fastening screws and parts are complete, and whether the memory is good. Pull the motor shaft to check whether the rotor of the motor can rotate freely and whether there is any noise when rotating. According to said data, such as power, voltage, connection, frequency and speed, etc., is it related to load, power supply, etc.? Check whether the work of the motor drive organization is reliable.

High-voltage motor maintenance needs to check the ventilation status of the motor and whether the bearing lubrication condition of the motor is normal. Check that the motor grounding device operates reliably. Check whether the brush assembly of the motor is flexible, whether the handle position can operate normally, etc.

Depending on where it is used and how it is used, there may be problems such as high temperature, corrosion, and even the entry of foreign objects, which will cause certain damage to the motor. If the motor itself is overloaded, the pressure is too large, the pressure is too small, it will cause the failure of the motor winding. This will not only affect the efficiency of the motor, but also pose a certain threat to our personal safety. At this time, the maintenance of the motor is particularly important.

Due to the instantaneous change of power supply voltage or single-phase operation, mechanical collision and other reasons during use, the insulating sheath of the winding surface is damaged, and a short circuit will occur between the windings and between the winding ramps. At this time, the ion magnetic field is unevenly distributed due to the short circuit, and the imbalance of the three-phase current will cause the running motor to vibrate and increase the noise during operation.

When the short-circuit problem is serious, the motor cannot start normally, and even a huge short-circuit current is instantaneously generated in the short-circuit coil. Yes, the coil heats up and burns out in a very short period of time. Therefore, whether it is a household motor or a motor used in the production industry, it is necessary to continuously check and maintain this step during use.