Electric arc detector

Details Electric arc detector Electric arc detector

G - Physics

01

R

G01R 31/00 (2006.01) G01R 31/02 (2006.01) G01R 31/04 (2006.01) G01R 31/12 (2006.01) H02H 1/00 (2006.01) H02H 1/04 (2006.01)

Patent

CA 2125026

An arc detector for detecting potentially hazardous arcing in electrical connections comprises detection and signal processing circuitry (82, 69-72) for monitoring high-frequency noise on the power line characteristic of arcing and distinguishable from other sources of high-frequency noise. If high-frequency noise is present and exhibits a gap occurring every half-cycle of the power frequency, arcing is determined to be present, and an alarm (80) is given.

Un détecteur d'arc pour détecter la formation d'arcs portentiellement dangereux dans des raccords électriques comprend des circuits de détection et de traitement des signaux (82, 69-72) pour contrôler les bruits haute fréquence sur la ligne de puissance qui sont caractéristiques de la formation d'arc et qui peuvent se distinguer d'autres sources de bruit haute-fréquence. Si un bruit haute fréquence se manifeste et présente un creux survenant à chaque demi-cycle de la fréquence de puissance, il est présumé y avoir formation d'arc et l'alarme (80) est donnée.

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