Circuit interrupter with digital trip unit and style...

Details Circuit interrupter with digital trip unit and style... Circuit interrupter with digital trip unit and style...

H - Electricity

02

H

348/26

H02H 3/08 (2006.01) G05B 19/08 (2006.01) H02H 3/00 (2006.01)

Patent

CA 1149921

49,004 ABSTRACT OF THE DISCLOSURE A circuit breaker includes a microprocessor- based trip unit and a designator circuit including a plurality of jumper positions. Each jumper position corresponds to one digit of a four digit style number specifying which of a plurality of optional functions and features are incorporated in the specific trip unit. Each jumper position is a multitap voltage divider. Selection of one tap on each of the jumper positions causes a set of four analog voltages to be supplied to the trip unit. An analog-to-digital converter converts the analog voltages to a series of digital representations which are inter- preted by the microcomputer as a style number used to command execution of a discrete set of instruction groups, with each instruction group corresponding to one of the optional functions and features.

374735

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