Protective relaying system

Details Protective relaying system Protective relaying system

1981-02-20

1983-12-13

Ruggiero, Joseph F.

Boots, shoes, and leggings

361 79, 364186, 364483, G06F 1520

Patent

active

044208057

ABSTRACT:
A protective relaying system is disclosed which includes a selection circuit for receiving a plurality of input signals from a power system and for selecting one of the input signals to provide a selected input signal. The system also includes a comparison circuit connected to the selection circuit for receiving the selected input signal, comparing the selected input signal with a predetermined reference signal, and producing a decision signal according to the result of the comparison. The system further includes a processing unit connected to the comparison circuit for receiving the decision signal and processing the decision signal to produce a relay output signal.

REFERENCES:
patent: 4219858 (1980-08-01), DePuy et al.
patent: 4272816 (1981-06-01), Matsumoto
patent: 4276605 (1981-06-01), Okamoto et al.
patent: 4291355 (1981-09-01), Dinger
patent: 4300182 (1981-11-01), Schweitzer
patent: 4321647 (1982-03-01), Fordham
patent: 4333151 (1982-06-01), Matsushima
patent: 4335437 (1982-06-01), Wilson et al.
patent: 4344143 (1982-08-01), Kurosawa et al.

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