What is the purpose of shaft earthing and bearing insulation?

What is the purpose of shaft earthing and bearing insulation?
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1 Answer

Answer :

The voltage generated in the shaft due to the leakage fluxes can circulate current through the shaft. If shaft earthing is not done the leakage current will flow through the bearings to ground and pitting of bearings will result. Hence bearing foundation and pipelines are insulated. 
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