H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 33/04 (2006.01) H01H 77/10 (2006.01) H01H 9/34 (2006.01)
Patent
CA 2238705
An electrical circuit interrupter comprising a housing with an operating mechanism disposed therein and including first and second separable main contacts disposed within the housing is taught. There is an electrically conducting first contact support which has a shape which substantially doubles back upon itself and which has parallel, spaced apart first and second legs forming a central region. An electrically insulating support member is supplied which is disposed in the central region and has a substantial portion outboard of the central region in a disposition to shield a portion of the contact support member. It also has a portion which captures the first contact support member. In addition, magnetic plates are disposed within the central region for cooperating with other closed loop magnetic plates outside of the support member for providing a slot motor action for the movable contact. An arc runner is provided which is trapped between the support member and the contact support conductor. All of this is disposed upon a protrusion in the housing of the circuit breaker and held in place by way of a securing device. Lastly, a mandrel is provided for supporting the aforementioned external magnetic plates. The mandrel is gas evolving so that under the influence of the heat of an electrical arc it evolves gas which helps to push the arc out and away from the opening contacts. The aforementioned gas propels the formed arc outwardly away from the contacts in an effort to cool and interrupt the arc.
Cette invention concerne un rupteur électrique constitué par un boîtier renfermant un mécanisme de manoeuvre et deux contacts principaux séparables. Le support conducteur du premier contact présente la forme générale d'une épingle à cheveux, avec deux bras parallèles et écartés définissant entre eux un espace central. Un support isolant, placé dans cet espace central, comporte une partie qui saisit le support conducteur du premier contact, et une autre partie disposée en saillie de manière à protéger une partie du support conducteur. Des plaques magnétiques sont placées dans l'espace central pour réagir avec d'autres plaques magnétiques en boucle fermée placées à l'extérieur de l'espace central, de manière à assurer le mouvement de va-et-vient du contact mobile. Une spire conductrice est insérée entre le support isolant et le support conducteur du premier contact. Tous ces éléments sont montés sur un bossage dans le boîtier du rupteur et maintenus en place par un dispositif de verrouillage. Un mandrin sert de support aux plaques magnétiques placées à l'extérieur de l'espace susmentionné. Sous l'effet de la chaleur produite par un arc électrique, ce mandrin dégage un gaz qui agit sur l'arc en le repoussant loin du contact mobile, et a pour effet de refroidir et d'éteindre l'arc.
Changle Joseph F.
Gula Lance
Juds Mark A.
Mading James E.
Malingowski Richard P.
Bereskin & Parr
Corporation Eaton
LandOfFree
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