1. Over all Vibration Levels in mm/s
Vibration levels in mm/sec taken on 160 KVA Alternator assembly
Location
Over all Vibration Levels in mm/s
Horizontal Direction
Sept 2006
Dec 2007
Dec 2008
Alternator DE
16.3
18.4
16.7
Alternator NDE
6.14
11.50
7.91

2. Vibration spectrum taken on Alternator DE in horizontal direction

3. Vibration spectrum taken on alternator DE in horizontal direction
Zoomed view
2250 rpm
3000 rpm
1500 rpm
750 rpm

4. Vibration spectrum taken on Alternator NDE in horizontal direction

5. Vibration spectrum taken on Alternator NDE in horizontal direction
Zoomed view
3000 rpm
6825 rpm
1500 rpm
750 rpm
2250 rpm

6. Vibration spectrum taken on alternator DE in horizontal direction
Zoomed view
3000 rpm
2250 rpm
5250 rpm
1500 rpm
750 rpm