During 2008 in hidropower plant , rotor of 2,5 MW generator has been replaced ,with repared one. Actually , it is same rotor , but its windings and poles are replaced with new one , while shaft and solid magnetic iron core stay same .
Also , all windings in stator are replaced .
Rejuvinated hidro generator now has 30% more power .
This power plant is in Serbia , on river Zapadna Morava near city Čačak .
It has two generators , 2,5 MW and 4MW , each .
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