Induction Motor Mechanical Looseness
High vibrations in the radial directions on the RH side of a 2000 KW Induction Motor at 990 RPM were observed. After correcting mechanical looseness, the vibration level decreased to 1.4mm/s.
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2000 KW Induction Motor
990 RPM
As far as overall vibration is concerned, we noted high vibrations in the radial directions on the RH side.
1- 2x speed higher than 1x
2-harmonic with synchronous speed for 6x
3- small peak with 2LF
4- 2 peak in single revolution with TWF
mechanical looseness symtom
weak in structural , bolt lose ,crack foundation
They noticed that one of the bolt in rare feet is broken after correcting these tasks, the vibration level decreases to 1.4mm/s.
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Category:
Vibration Case Study
Language:
English
Reading Time:
1 min
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Original Authors
Junayd Al Bayati
Source:
https://www.lin...