Genrator Rotor Shaft to ground voltage
Genrator Rotor Shaft to ground voltage
(OP)
I am looking for typical Generator Rotor Shaft to Ground voltage for a 50MW 3000rpm 11kV Generator to establish if an earthing brush on the alternator rotor shaft will prevent and current flowing through the coupling and down to earth via the prime mover bearings.
Are there any other precautions that need to be taken to protect the prime mover bearings from this problem.
Are there any other precautions that need to be taken to protect the prime mover bearings from this problem.






RE: Genrator Rotor Shaft to ground voltage
http://www.abb.com/GLOBAL/seapr/SEAPR035.NSF/viewUNID/67BD0B8B45590059412568890037BD7D
http://www.sohreturbo.com/damage.htm
http://www.compsys.com/drknow/aplpapr.nsf/06b6f5a4de2eae6285256a3f004d9758/2f085b6fad75d290852566aa0062720e!OpenDocument
http://www.sohreturbo.com/table.htm
RE: Genrator Rotor Shaft to ground voltage
Siemens has a model of the causes of this problem.