A couple of years ago, an electrical testing firm conducted vibration testing on several large loads. These included the four 400-hp motors for the plant air system and several 100-hp motors in a key process area. They recommended corrective measures be taken on all but two of these, and another shop performed the work.
Electrical Troubleshooting Quiz - January 17, 2017
There is a methodology to assessing and correcting sources of vibration.