The sound of the motor when it is operating normally
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A 15KW three-phase motor. During operation, there is a periodic buzzing sound that varies in intensity; the volume of this sound is not very high, which rules out issues such as missing phases or operating beyond the rated capacity. Is this the sound of uneven air gaps? Can it run for a long time?
It might be that the bearing clearance of the motor is too large.
We have one too, operating at nearly full current, with a periodic buzzing sound; I’m not sure what the problem is
Vibration, temperature: normal; it should be able to operate. Replace it during maintenance
What was said on the 2nd floor is correct; it could be caused by a bent shaft or excessive bearing clearance. If the noise is low, it’s not a problem; wait until the noise becomes louder and then try replacing the bearings.
Is this situation electromagnetic noise?