Generator rotor winding ground detection

Details Generator rotor winding ground detection Generator rotor winding ground detection

1991-01-22

1992-06-30

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324545, G01R 3102

Patent

active

051266580

ABSTRACT:
A device for detecting a ground fault in a winding mounted to rotate with the rotor of a machine, in which an electric potential is present across the winding during machine operation, the rotor is grounded and the winding is normally insulated from ground, the device including: a current responsive light emitting element mounted to rotate with the rotor and electrically connected between the winding and the rotor; and a light responsive detector fixed in a position relative to the machine and having a field of view which is traversed by the light emitting element during a portion of each revolution of the rotor.

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patent: 4812751 (1989-03-01), Roberts et al.
patent: 4864242 (1989-09-01), Hurley

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