ARC FAILURE DETECTOR

PROBLEM TO BE SOLVED: To provide an arc failure detector that responds to arc failure with a level that is equal to or less than the rated current of a circuit where the are failure occurs. SOLUTION: A detection current signal including a pulse, that is generated along with an arc, is integrated rep...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	STEVEN CHARLES SCHULTZ, ZUERCHER JOSEPH CHARLES
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLYOR DISTRIBUTION OF ELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS EMERGENCY PROTECTIVE DEVICES GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS RELAYS SELECTORS TESTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an arc failure detector that responds to arc failure with a level that is equal to or less than the rated current of a circuit where the are failure occurs. SOLUTION: A detection current signal including a pulse, that is generated along with an arc, is integrated repeatedly for each cycle of an AC current by a resettable integrator 35, an integration value is compared with the integral value of a cycle immediately before by a comparator 43, a change including increase and decrease in an integral value which is generated during specific number of cycles is counted, and an arc failure signal is generated according to the count.