One or all phases recloser control

H - Electricity – 02 – H

Patent

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Details

H02H 7/26 (2006.01) H02H 3/06 (2006.01)

Patent

CA 2376911

A recloser trips on one phase for single-phase only fault conditions, or all phases for multi-phase fault conditions. During power delivery, the recloser monitors the three phases of a power line (e.g., phases A, B, and C). If a fault is detected on one phase, then a timer is started and subsequently decremented. If the timer finishes counting down while the fault is still present, then it is determined if any of the other two phases are timing a fault. If so, then all three phases are tripped; otherwise, only the faulted phase is tripped.

Un relais de réenclenchement se déclenche sur seule phase en cas d'anomalies monophasées seulement, ou en toutes les phases en cas d'anomalies multiphasées. Pendant l'alimentation en courant, le relais de réenclenchement surveille les trois phases d'une ligne électrique (p. ex., phases A, B et C). Si une anomalie est détectée en une phase, une minuterie débute ensuite un compte à rebours. Si la minuterie termine le compte à rebours alors que l'anomalie se manifeste toujours, le dispositif détermine si l'une des deux autres phases chronomètre une anomalie. Si c'est le cas, alors les trois phases sont déclenchées, sinon, seule la phase présentant l'anomalie est déclenchée.

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