Compared with low-voltage motors, are high-voltage motors more prone to vibration problems? 
low-voltage motors, high-voltage motors, especially high-voltage asynchronous motors, are mostly based on cage rotor structures. During the manufacturing and operation of the motor, due to improper matching of mechanical structural parts, it may cause severe vibration of the motor. It may be radial vibration or axial vibration.
The air gap between the stator and the rotor is not uniform, which is a key factor for motor vibration. In the process of production and processing, when the motor base, stator core, and rotor are in different axes, it will directly cause the unevenness of the motor air gap. After the motor is energized, it will cause electromagnetic vibration of the motor due to unilateral magnetic tension. In addition to mechanical vibration, the resulting vibration is also accompanied by low-frequency electromagnetic sound.
 
 
For a motor in operation, especially a repaired motor, due to long-term operation, there may be some dimensional deviations in the diameter of the motor bearings, bearing chambers, and bearing positions, resulting in an unreasonable coordination relationship between each other and causing motor vibration problems. For the matching parts of the inner and outer rings of the bearing, when there is a serious loosening problem, the fatal quality failure of the bearing heating and burning will occur in a short time due to the bearing running circle.
For the rotor part of the motor, the rotor body loses balance due to the deformation of the rotor bar during the operation of the motor and the failure of the original balance state. This is a common cause of failure in the operation of high and low voltage motors.
 
For high-voltage motors, especially motors that use sliding bearings, the misalignment of the magnetic centerline is the fundamental cause of the motor's axial vibration. This is the key to the high-voltage motors that must be well controlled during installation and use.
 
In order to prevent the occurrence of similar problems, for cage high-voltage motors, starting process control is particularly important. It is necessary to prevent the difficulty of starting the motor due to insufficient power supply capacity.
In the analysis and inspection of motor vibration problems, necessary item inspections should be passed to find out the root cause of vibration. Some motor repair units are more inclined to replace bearings. Objectively speaking, non-conforming bearings can cause motor vibration problems, but bearing conformance may not necessarily solve the motor vibration problems. Therefore, in-depth comprehensive analysis is more conducive to the solution of the problem. .
 
For electromagnetic reasons, the asymmetry of the winding and the electrical quality failure of the winding will cause the uneven magnetic field of the motor, and also cause the electromagnetic vibration of the motor. This vibration is more manifested as severe jitter and severe dull sound. There is still a difference from mechanical vibration, which can be clearly distinguished during the analysis process.