Circuit interrupter with solid state digital trip unit and positive power-up feature

A circuit interrupter includes a microcomputer controlled trip unit having a front panel numeric display and a plurality of LED displays for providing post tripping indication of cause-of-trip and trip current value. Reliable operation is provided during power up conditions. Means are also provided...

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Bibliographic Details
Main Authors ELMS; ROBERT T, SALETTA; GARY F, MERCIER; BERNARD J
Format Patent
LanguageEnglish
Published 22.03.1983
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
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Summary:A circuit interrupter includes a microcomputer controlled trip unit having a front panel numeric display and a plurality of LED displays for providing post tripping indication of cause-of-trip and trip current value. Reliable operation is provided during power up conditions. Means are also provided for accurate performance of long delay and ground fault tripping operation.
Bibliography:Application Number: US19800140632