Experimental Aspects in the Vibration-Based Condition Monitoring of Large Hydrogenerators

Figure 3

Shaft relative vibrations ((a) and (c)) and bearing absolute vibrations ((b) and (d)), in -direction and -direction, in time domain ((a) and (b)) and in frequency domain ((c) and (d)), measured at the UJB of a LHG operating with 617 MW (01.14.10).

(a)

(b)

(c)

(d)