H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 71/12 (2006.01) H01H 71/46 (2006.01) H01H 71/48 (2006.01) H02H 3/02 (2006.01) H01H 71/16 (2006.01)
Patent
CA 2364989
The high transient current sustained by arcing during opening of the main contacts of a miniature circuit breaker is commutated out of the bimetal by deflection of the bimetal in response to the overcurrent to close secondary contacts on the free end of the bimetal and on a low resistance by-pass conductor shunting the bimetal. The by-pass conductor can be extended toward the movable contact arm carrying the movable main contact to commutate some of the overcurrent into the bypass conductor earlier in the opening sequence to reduce the energy input to the bimetal and reduce the force closing the secondary contacts.
Le courant transitoire élevé soutenu par l'arc électrique pendant l'ouverture des contacts principaux d'un disjoncteur miniature est commuté en dehors du bilame au moyen de la déflexion du bilame en réaction à la surintensité pour fermer les contacts secondaires sur l'extrémité libre du bilame et sur un conducteur de dérivation à faible résistance qui dérive le bilame. Le conducteur de dérivation peut se prolonger vers le bras de contact mobile portant le contact principal mobile pour commuter une partie de la surintensité dans le conducteur de dérivation plus tôt dans la séquence d'ouverture pour diminuer la sortie d'énergie au bilame et diminuer la force fermant les contacts secondaires.
Erb Michael Joseph
Lias Edward Ethber
Mrenna Stephen Albert
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Corporation Eaton
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