Hi guys, i,ve a problem with 4Poles Generator 8Mgw in Turbocompressor Solar Mars (Turbine-gearBox-Generator), High Level Vibration Axial NDE 2x (2x1800=3600cpm), 0.26 in/seg(pk).
The Last test were with change Load level (decrement from 8Mgw to 0.5 Mgw),
Decrease in amplitude is observed due to the change load level:
8Mgw, Level vibration @2x= 0.26 in/seg(pk), the last level (0.5Mgw)= 0.08 in/seg(pk). View Anex.
Phases: NDE Axial
1x= In fase (4 axial points, 12,3,6,9)
2x= OutFase 90degres (12,3,6,9)
Observed sidebands 525cpm in 1x and 2x