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Hydro-generator spinning

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wbd

Electrical
May 17, 2001
658
Hello,
I would like to know if there are any detrimental effects of the following scenario:
A 3 MW hydroturbine is left spinning at around 200-250 rpm (synch speed is 360 rpm)due to the inability at this time to bring it to a complete stop (spun wicket gates, possibility of ice blockages in vents and penstock). Breaker is open and field is off.
Thank you in advance.
 
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As lond as there is proper bearing lubrication you should be fine.
 
The bearings will last less.

You did not say the the hydro was loaded or not.

Make sure that the oiling is properly working.

What type of turbine you have a Banki ?.

Regards
Nando
 
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