Patent ID: 6275366
Filing Date: 2001-08-14
Classification: H02H

Abstract:
An electrical power distribution system having a plurality of power substation circuits each connected to at least one corresponding fault isolating switch assembly for sectionalizing a feeder conductor in said system, said system comprising:means for monitoring during a normal operation mode for an occurrence of a fault condition at said feeder conductor electrically connected to said at least one corresponding fault isolating switch assembly;means for signaling the occurrence of said fault condition;means for determining if said signaled fault condition lasts longer than a predetermined fault duration time threshold;means for performing at least one switching function if said fault condition lasts longer than said predetermined fault duration time threshold to prevent current supplied by at least one of said plurality of power substation circuits from flowing beyond a predetermined point along said electrical power distribution system; andmeans for terminating the determination of said fault condition if said fault condition does not last longer than said predetermined fault duration time threshold.