1500KW induction motor/generator with vibration. 1800 rpm

Thanks guys, I found ISO 8528-9 which ISO covers 8528-9 Reciprocating internal combustion engine driven alternating current generating sets -- Part 9: Measurement and evaluation of mechanical vibrations.

I have done further investigations and it seems the vibrations is coming from 1800 rpm part of the gear.  ( 30hz )

The gear has now been opened at some level and it doesn´t look good but they haven´t yet found what was the couse of the vibration.  

ISO 10816 is now 20816 I am told.

I can put frequency marker on spectrum but it is quite limited software when it comes to analysis. ( no orders or bearing data )

Thanks a lot for you replies.

All best

Gisli

 

Gisli A. Gudm posted:

 

I have done further investigations and it seems the vibrations is coming from 1800 rpm part of the gear.  ( 30hz )

The gear has now been opened at some level and it doesn´t look good but they haven´t yet found what was the couse of the vibration. 

 

Can you elaborate more on what you found in the gear?  Perhaps some pictures?

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