Patent ID: 6188203
Filing Date: 2001-02-13
Classification: F02N,H02H,H02P

Abstract:
Apparatus for detecting a ground fault in a generator circuit a load is connected to the generator by a first conductor, being a feeder line and having a feeder current, and a second conductor, being a return line having a return current, comprising:a sensing means coupled to each conductor for detecting instantaneous changes in feeder current and return current, where said sensing means producing a first output that corresponds to instantaneous changes in feeder current, and a second output that corresponds to instantaneous changes in return current;a differential circuit for differentially combining said first and second outputs and producing a third output for indicating when the ground fault is detected based on a difference between said first and second outputs, and;a control means for monitoring said third output and de-energizing the generator when the ground fault is detected.