Patents Assigned to IPC Resistors Inc.
  • Ground fault circuit having circuit failure sensor, and method
    Patent number: 6552885
    Abstract: A ground fault circuit for a poly-phase circuit is disclosed. The ground fault circuit provides a plurality of current limiting impedance paths from a neutral of the poly-phase circuit to ground. A sensing circuit monitors the paths and may indicate failure of one of the paths. The sensing circuit, may, for example sense the net impedance of the plurality of paths and note an alarm in the event of an increased or decreased impedance, indicative of an open or short circuit along either path.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: April 22, 2003
    Assignee: IPC Resistors Inc.
    Inventors: John S. Campbell, Sergio A. R. Panetta