Circuit interrupter apparatus with a battery backup and reset circuit

A circuit interrupter includes a circuit arrangement [Fig. 12 (79,82)] for sampling a conditioned current value and determining operating characteristics [Fig. 3 (100)] related to the current flow through an electrical circuit [Fig. 3 (71)]. Also included is a circuit arrangement for comparing [Fig....

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Bibliographic Details
Main Authors MATSKO, JOSEPH JACOB, SALETTA, GARY FRANCIS
Format Patent
LanguageEnglish
French
German
Published 21.09.1994
Edition5
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
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Summary:A circuit interrupter includes a circuit arrangement [Fig. 12 (79,82)] for sampling a conditioned current value and determining operating characteristics [Fig. 3 (100)] related to the current flow through an electrical circuit [Fig. 3 (71)]. Also included is a circuit arrangement for comparing [Fig. 16 (F200)] the operating characteristics to preselectable tripping parameters and for initiating a trip condition [Fig. 16 (F400)] when an operating characteristic exceeds a corresponding tripping parameter. Additionally, a fault indicating circuit arrangement [Fig. 3 (88)] energized by a backup energy source [Fig. 3 (89)] following interruption is also included as well as a circuit arrangement for preventing interference [Fig. 8 (Q204)] to the display and operating circuits during power-up and power-down conditions.
Bibliography:Application Number: EP19880301431