Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1982-06-02
1984-01-24
Salce, Patrick R.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
361 62, 361 97, 324424, 364483, 364492, H02H 3093
Patent
active
044280220
ABSTRACT:
A circuit interrupter includes a microprocessor based trip unit having a plurality of output control lines and a power supply for providing operating power to said trip unit. Interlock means are provided to maintain the output control lines in a predetermined inactive status for a predetermined time period following energization of the power supply to allow time for operating power to rise to a level sufficient to enable the microcomputer to assert positive control over the status of the control lines. An automatic reset circuit is provided to reset the microcomputer program counter to an initialization routine unless a pulse pattern produced by proper execution of the microcomputer instructions is received by the automatic reset circuitry.
REFERENCES:
patent: 3818275 (1974-06-01), Shimp
patent: 3842249 (1974-10-01), Geyer et al.
patent: 3956670 (1976-05-01), Shimp
patent: 3964020 (1976-06-01), Dickerson
patent: 4077061 (1978-02-01), Johnston et al.
patent: 4161027 (1979-07-01), Russell
patent: 4219858 (1980-08-01), Du Puy et al.
patent: 4245318 (1981-01-01), Eckart et al.
Operation and Installation Guide to the "Matco Energy Monitor", (no date given).
"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 Minicomputer and Microprocessor", Suzuki et al., IFAC Conference on Automatic Control and Protection of Electrical Power Systems, Feb. 1977.
Engel Joseph C.
Mercier Bernard J.
Salce Patrick R.
Westinghouse Electric Corp.
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