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公开(公告)号：US20220359138A1
公开(公告)日：2022-11-10
申请号：US17764944
申请日：2020-09-22
IPC分类号： H01H33/56 , H02B13/055 , H02B13/045
摘要： A medium or high voltage electrical device and method of maintaining the composition of an insulating gas mixture in a medium or high voltage electrical device, where the device comprises a sealed chamber, said sealed chamber comprising electrical components; a gas mixture ensuring electrical insulation and/or extinguishing of electrical arcs produced in this chamber, wherein the gas mixture comprises at least one insulating gas and at least one dilution gas; and a receptacle, said receptacle comprising an opening, at least one wall, wherein at least one wall is a heatable wall, and wherein said receptacle is positioned to receive liquefied gas; the device further comprising a heating element for heating the heatable receptacle wall; and a dielectrically and thermally insulating layer located between the heatable receptacle wall and the chamber.
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公开(公告)号：US20210398762A1
公开(公告)日：2021-12-23
申请号：US17274074
申请日：2018-09-07
发明人： Yannick KIEFFEL , François BIQUEZ
IPC分类号： H01H33/70
摘要： The invention relates to an electric arc-blast nozzle (5) for a circuit breaker comprising a middle portion (7) forming a throat defining internally an axial passage (13) for interrupting an electric arc, and two end portions (9, 11) extending on either side of the middle portion (7) and being designed to receive respective arcing contacts (1) and (3) that are movable axially relative to each other.
The middle portion (7) and the two end portions (9, 11) are made of a same dielectric material obtained from a composition comprising a fluorocarbon polymer matrix, at least one inorganic filler and micro-capsules of liquid heptafluoro-iso-butyronitrile.
The invention also relates to a circuit breaker including such a nozzle (5).-
公开(公告)号：US20170352509A1
公开(公告)日：2017-12-07
申请号：US15534672
申请日：2015-12-09
发明人： François BIQUEZ
摘要： A self-blast electric interrupter device, such as a circuit breaker or a disconnector, the device comprising: a first contact and a second contact that are movable between a closed position in which they press against each other, and an open position in which they are spaced apart from each other; and an arc-control chamber surrounding the two contacts in order to define a space that is closed in the closed position. At least one of the contacts includes a central channel opening out towards the other contact in order to enable gas coming from the arc-control chamber during an opening stage to be discharged. According to the invention, the other contact carries an insulating member that ablates under the effect of an electric arc forming in the arc-control chamber in order to give rise to a large and fast increase of pressure within the chamber.
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