Current overload protection for inverter of uninterruptible power supply system

Current overload protection is provided for an inverter of an uninterruptible power supply system; a shutdown circuit responds when a current overload is present, and a plurality of at least three comparators having different input threshold and different time delays at their respective outputs oper...

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Bibliographische Detailangaben
Hauptverfasser:	DANG, GURCHARN S
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	Current overload protection is provided for an inverter of an uninterruptible power supply system; a shutdown circuit responds when a current overload is present, and a plurality of at least three comparators having different input threshold and different time delays at their respective outputs operate such that when an extreme overload occurs, the inverter will be shut down immediately, whereas it will be shut down after predetermined longer periods with correspondingly lesser amounts of current overload present.