Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1980-04-15
1982-05-25
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
H02H 304
Patent
active
043319980
ABSTRACT:
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 interpreted 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.
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patent: 4107778 (1978-08-01), Nii et al.
"Results of Field Experiments of Digital Relays Utilizing Minicomputer and Microprocessor"-Suzuki et al., IFAC Conference on Automatic Control and Protection of Electrical Power Systems, 2/1977.
"Motor Protective Relay 1C305 MLTA", Descriptive Bulletin, General Electric, 12/1978.
"Micro VersaTrip Programmer . . . ", Eckart, Industrial Power Systems, 6/1979.
"Operating and Instruction Guide", Matco Energy Monitor.
Engel Joseph C.
Lange Emroy W.
Matsko Joseph J.
Mercier Bernard J.
Converse, Jr. Robert E.
Moose Jr. Harry E.
Westinghouse Electric Corp.
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