Abnormal noise in 2pole motor at less speed

Shiv2010 · Apr 25, 2016

This induction motor is working fine at 3000rpm, however giving abnormal noise in between 2000 and 2300 rpm. Can some one suggest why and solution ?

maripali · May 3, 2016

Suggest, that critical velocity of the rotor is between 2000 and 2300 rpm.
When bearings have a loose the rotor starts to vibrate and gives that noise.

Tmoose · May 5, 2016

I'd say much more information is required for a useful answer.
The nature of the noise, the history of the motor's service, and the history of the "noise", any troubleshooting of the VFD, pictures and drawings of the installation.

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Abnormal noise in 2pole motor at less speed

Shiv2010

Electrical

maripali

Mechanical

Tmoose

Mechanical

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