General Electric Canada, Inc.

Raymond David Findlay

James H Dymond

Raymond K J Ong

James Victor Kay

Rogowski coil method of determination of bearing lubrication in dynamoelectric machines

Some dynamoelectric machines develop shaft E.M.F.'s during operation which lead to circulation currents in the shaft of the machine. The shaft current will attempt to flow through the bearings of the machine, unless some action is taken to prevent or limit said current flow. This invention minimizes the circulation of rotor shaft currents by providing a return path for the shaft current through an insulated conductor located in the center of the shaft of the machine. The insulated conductor is electrically attached to the shaft at the ends of the conductor. The conductor may extend the length of the shaft.

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Ancaster, Canada

Raymond David Findlay