Patent ID: 7254001
Filing Date: 2007-08-07
Classification: G06F,H01H,H02H,H02J,H04J,H04L,Y02B,Y02D,Y02P,Y04S

Abstract:
1. A method of protecting a circuit having a first circuit breaker and a second circuit breaker downstream of said first circuit breaker, the method comprising: detecting a fault in said circuit, said fault being downstream of said second circuit breaker; determining a dynamic delay time for opening said first circuit breaker; and opening said first circuit breaker after said dynamic delay time has elapsed, wherein determining said dynamic delay time comprises monitoring electrical parameters of said circuit and communicating said electrical parameters over a network to a microprocessor, said microprocessor being configured to operate said first and second circuit breakers, wherein said dynamic delay time is based at least in part on a clearing time of said second circuit breaker.