Electronic trip unit

An electronic trip unit with an auxiliary battery power supply 3 has a microprocessor 1 which periodically provides a pulsed load to the battery 3 to prolong battery operational life. The trip unit may include ROM and RAM memory and current transformers for sensing overcurrents and supplying power t...

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Bibliographische Detailangaben
Hauptverfasser:	DONALD MCGRATH, ESTEBAN SANTOS, HANNS P SAILER
Format:	Patent
Sprache:	eng
Schlagworte:	CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	An electronic trip unit with an auxiliary battery power supply 3 has a microprocessor 1 which periodically provides a pulsed load to the battery 3 to prolong battery operational life. The trip unit may include ROM and RAM memory and current transformers for sensing overcurrents and supplying power to the microprocessor.