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I have 1010 KVA Generator when i run the DG set for 5 to 6
hours the couplling (couplling joint in between engine &
alternator) bolts are getting loose what is the reason &
what is the remedy over this??????????
- 7 Answers
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Answer / cs reddy
Bolts are getting loose due to Vibration.
Vibrations may be due to :
a) Misallignment.
b) Improper foundation.
c) Improper Mass Balancing.
| Is This Answer Correct ? | 10 Yes | 1 No |
Answer / manoj saah
Coupling Misalligment may be major reason.
So do allignment by using Dial Gauge and clearance should
0.05 mm.
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / girish
Vibration is a main reason
1. Reduce vibration using vibration isolating mounts
2. use flexble coupling with lock nuts
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / rakshit
dumb people .... they have specified 1010 KVA ... which is
very high capacity.... high shear force exists if proper
rated engine is not coupled to generator ,,,, due to high
shear force.. wear in coupling.. wear in coupling... loose
studs... .. also greater vibrations is the cause
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / faisalabad
you may use self locking nut as well as suitable grate lock tight according bolts specfication
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / pavan
Use lock nuts. Because vibrations are unavoidable (but can
only be minimized), using lock nuts is always safe.
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / nagarajan
I Think u can make use of pins in the nuts at specified
tight point of bolt.
| Is This Answer Correct ? | 0 Yes | 1 No |
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