A low-voltage circuit breaker with a capability of tripping...

H - Electricity – 01 – H

Patent

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Details

H01H 71/00 (2006.01) H01H 33/82 (2006.01) H01H 71/24 (2006.01) H01H 73/00 (2006.01)

Patent

CA 2496171

This invention discloses a low-voltage circuit breaker with a capability of tripping quickly. Its main feature is that at least one of the side faces of the contact device provides an open flange which has an internal through hole, and the bottom of a rotating shaft disposed on the bottom part provides a stressed member. The stressed member receives the over-pressure airflow escaping from the open flange of the contact device to generate a force. The force is passed to the activating member by the rotating shaft and is magnified, then hits the latch quickly and makes a trip. An intermediate step is bypassed due to the force produced earlier, the force which is produced by the electromagnetism part in the heat energy and electromagnetic system, so that the low-voltage breaker can open quickly and reduces opening time greatly and improve the breaking capability.

L'invention se rapporte à un rupteur basse tension pouvant interrompre rapidement le courant. Ce rupteur se caractérise principalement en ce qu'au moins une des faces latérales du contacteur est dotée d'un bord qui est traversant et situé sur la partie inférieure de l'arbre rotatif, lequel est doté sur sa base inférieure d'un élément forcé associé. Cet élément forcé reçoit le flux d'air de surtension qui s'écoule à partir du bord du contacteur. Le flux d'air passe vers l'élément forcé par l'intermédiaire de l'arbre rotatif et est amplifié, puis frappe le verrou rapidement et provoque un déclenchement. L'étape intermédiaire est supprimée du fait de la force produite préalablement, ladite force étant produite par la partie électromagnétique dans le système à énergie calorifique et électromagnétisme, ceci permettant une ouverture rapide du rupteur basse tension ainsi qu'une réduction considérable du délai d'ouverture, ce qui améliore la capacité de fonctionnement de ce rupteur.

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