Patent ID: 8014115
Filing Date: 2011-09-06
Classification: H02H

Abstract:
1. A method of operating a circuit breaker system comprising: defining a first user defined trip curve for a first circuit breaker, said first trip curve having an unrestrained short time threshold, an unrestrained I defining a second user defined trip curve for said first circuit breaker, said second trip curve having a restrained instantaneous threshold and a restrained I creating a third user defined trip curve for a second circuit breaker wherein said second circuit breaker is coupled to receive electrical power from said first circuit breaker, said third trip curve having an I modifying said second user defined trip curve restrained instantaneous threshold and said slope of said second user defined second trip curve restrained I receiving an interlock signal at said first circuit breaker from said second circuit breaker; and, changing a trip response of said first circuit breaker from said first trip curve to said second trip curve in response to receiving said interlock signal.