Martin James Wittrock

US Patent:

53154991, May 24, 1994

Filed:

Jun 19, 1992

Appl. No.:

7/901058

Inventors:

Ron J. Bilas - Cedar Rapids IA
Drew A. Reid - Cedar Rapids IA
Martin J. Wittrock - Belle Plaine IA

Assignee:

Square D Company - Palatine IL

International Classification:

G06F 1556
G05B 902

US Classification:

364140

Abstract:

An energy management loadpanel arrangement includes a load panel enclosure having a plurality of circuit breakers, each of which opens and closes in response to a control signal so as to interrupt an associated current path. A microcomputer generates the control signals to control the position of the circuit breakers and their associated current paths, and a volatile memory circuit, for example, RAM, stores time-event data which is used to indicate when the control signals should be generated. A charged electronic double-layered capacitor is coupled to the volatile memory so that, in the event of a power outage, operating power is provided to the volatile memory for extended periods of time. In this manner, the time-event data is retained during the power outage so that the circuit breakers are timely controlled, despite the power outage, in response to said control signals. A real time clock circuit is used to track the time, and the charged electronic double-layered capacitor is coupled to the real time clock circuit so that it also continues to operate during a power outage.