Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Reexamination Certificate
2011-05-03
2011-05-03
Jackson, Stephen W (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Ground fault protection
Reexamination Certificate
active
07936542
ABSTRACT:
A ground detection apparatus for use in a power generating system including an excitation circuit and a driven rotatable shaft. A ground detector ring is disposed on the rotatable shaft of the power generating system. A ground detection transmitter is mounted on the ground detector ring and in electrical communication with the excitation circuit of the power generating system. The ground detection transmitter is utilized to detect ground faults in the excitation circuit of the power generating system and to send a signal associated with ground faults detected by the ground detection transmitter. A ground detection receiver is associated with a stationary portion of the power generation system and is in communication with the ground detection transmitter for receiving the signal associated with ground faults detected and sent by the ground detection transmitter.
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Jackson Stephen W
Mai Tien
Siemens Energy Inc.
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