Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1980-04-15
1982-07-06
Salce, Patrick R.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
361 68, 364492, 364481, H02H 3093
Patent
active
043386474
ABSTRACT:
A circuit breaker includes a microprocessor-based trip unit having an optically coupled data input/output system. A pulse transformer receives input pulses generated by the execution of instructions in said microcomputer and supplies these pulses to a plurality of optical isolators, thereby reducing the power requirements of the optically isolated interface system to a value sufficient to allow complete operating power to be supplied to the trip unit and the data input/output system from the sensing current transformers within the circuit breaker housing.
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"Motor Protective Relay IC305 MLTA", Descriptive Bulletin, General Electric, Dec. 1978.
"Micro Versatrip Programmer", by G. C. Eckart, Industrial Power Systems, Jun. 1979.
"A Microprocessor Oriented Data Acquisition and Control System for Power System Control", by Mulder et al., 3rd Annual Symposium on Computer Architecture, Jan. 1976.
"Results of Field Experiments of Digital Relays Utilizing Mini Computer and Microprocessor, Suzuki et al., IFAC Conference on Automatic Control and Protection of Electrical Power Systems, Feb. 1977.
"Operating and Instruction Guide", Matco Energy Monitor.
Elms Robert T.
Engel Joseph C.
Wafer John A.
Wilson John T.
Converse, Jr. Robert E.
Salce Patrick R.
Westinghouse Electric Corp.
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