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公开(公告)号：US20190355533A1
公开(公告)日：2019-11-21
申请号：US16477107
申请日：2017-01-13
Applicant: ABB Schweiz AG
Inventor： Zichi Zhang , Stefan Valdemarsson
Abstract: A switchgear includes a circuit breaking section having a moveable contact bridging element and at least one first arc chutes adjacent the contact bridging element, each arc chute including a base plate for connecting to the contact bridging element and a group of splitter plates placed adjacent the base plate, where the splitter plates of the groups are separated from the base plate and each other via air gaps and resistors interconnect at least some of the plates in at least a first of the arc chutes for bypassing corresponding air gaps, wherein the resistors have values in the range 5 kΩ-1 MΩ, current ratings below 100 mA and power ratings below 1 W.
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公开(公告)号：US20210358701A1
公开(公告)日：2021-11-18
申请号：US17312491
申请日：2019-12-18
Applicant: ABB Schweiz AG
Inventor： Zichi Zhang , Stefan Valdemarsson
Abstract: An electrical switching device including: a main contact arrangement including a fixed contact and a movable contact, a plurality of splitter plates, each having a loop structure, the splitter plates being coaxially stacked with respect to their loop structure to form a stack of splitter plates, wherein one of the splitter plates of the stack of splitter plates is a first outermost splitter plate and another one of the splitter plates of the stack of splitter plates is a second outermost splitter plate, a first arc runner electrically connected to the second outermost splitter plate and a second arc runner electrically connected to the first outermost splitter plate, the first arc runner and the second arc runner being configured to direct a main arc from the main contact arrangement to the stack of splitter plates to thereby split the main arc into a plurality of secondary arcs between the splitter plates, and a first drive coil electrically connected to the second arc runner and to the movable contact or to the first arc runner and to the fixed contact, wherein the first drive coil has a first force increasing coil portion extending in parallel with the first arc runner in a direction towards the splitter plates such that the first force increasing coil portion is able to carry current in the same direction as and in parallel with a main current flow in the first arc runner to increase the magnetic field to thereby increase the Lorenz force applied to the main arc between the first arc runner and the second arc runner, when energised, is configured to create a blowing magnetic field in the stack of splitter plates, causing the secondary arcs to move circumferentially along the loops structures of the splitter plates.
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公开(公告)号：US11335524B2
公开(公告)日：2022-05-17
申请号：US17312491
申请日：2019-12-18
Applicant: ABB Schweiz AG
Inventor： Zichi Zhang , Stefan Valdemarsson
Abstract: An electrical switching device includes: a main contact arrangement including a fixed contact and a movable contact, a plurality of splitter plates, each having a loop structure, the splitter plates being coaxially stacked with respect to their loop structure to form a stack, wherein one splitter plate is a first outermost plate and another splitter plate is a second outermost plate, a first arc runner electrically connected to the second outermost plate and a second arc runner electrically connected to the first outermost plate, the first and second arc runners being configured to direct a main arc from the main contact arrangement to the stack to thereby split the main arc into a plurality of secondary arcs between the splitter plates, and a first drive coil electrically connected to the second arc runner and to the movable contact or to the first arc runner and to the fixed contact.
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Patent Agency Ranking
4.发明授权公开(公告)号：US10002722B2
公开(公告)日：2018-06-19
申请号：US15551807
申请日：2016-02-19
Applicant: ABB Schweiz AG
Inventor： Magnus Backman , Stefan Valdemarsson
CPC classification number: H01H9/542 , H01H9/30 , H01H33/04 , H01H33/596 , H01H2009/543 , H02H3/02 , H02H3/021 , H02H3/08 , H02H3/081 , H02H3/087
Abstract: A switching system for breaking a current, including a contact arrangement having a first and second terminals, a resonance circuit connectable across the contact arrangement, In the closed state the first switch enables current to flow through the resonance circuit in a first flow direction and into the contact arrangement in a direction opposite to a contact arrangement arc current flow direction. A second switch connected to the resonance circuit and to the second terminal. In the closed state the second switch enables current to flow through the resonance circuit in a second flow direction opposite to the first flow direction. A control system arranged to alternatingly set the first and second switches in the closed state and then in the open state upon a current breaking operation, until a current pulse, emanating from energy supplied by a contact arrangement arc current, flowing through the resonance circuit and into the contact arrangement reaches an amplitude which is equal to or greater than a magnitude of a contact arrangement arc current.
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公开(公告)号：US09805888B2
公开(公告)日：2017-10-31
申请号：US15308038
申请日：2014-05-19
Applicant: ABB Schweiz AG
Inventor： Marley Becerra , Stefan Valdemarsson , Maurizio Curnis , Alessio Bergamini , Henrik Breder
CPC classification number: H01H33/285 , H01H3/222 , H01H71/42 , H01H71/43
Abstract: An electrical switchgear for fast limitation and interruption of fault currents includes a fixed electrode, a movable electrode having a contact portion and a repelling portion, a plurality of contact fingers, and a coil. The coil is arranged adjacent to the repelling portion to induce eddy currents therein, the coil and the fixed electrode being arranged on the same side of the movable electrode, and the repelling portion being movable relative to the coil. The coil has a first dimension between two of its opposite lateral ends and defines an area which corresponds to a majority of a surface area of the repelling portion. The repelling portion provides a continuous current path, having a dimension corresponding to the first dimension, for eddy currents induced by the coil, whereby the movable electrode is pivotally thrown in a direction away from the coil and the fixed electrode, thus providing a circuit trip.
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公开(公告)号：US20170084410A1
公开(公告)日：2017-03-23
申请号：US15308038
申请日：2014-05-19
Applicant: ABB SCHWEIZ AG
Inventor： Marley Becerra , Stefan Valdemarsson , Maurizio Curnis , Alessio Bergamini , Henrik Breder
CPC classification number: H01H33/285 , H01H3/222 , H01H71/42 , H01H71/43
Abstract: An electrical switchgear for fast limitation and interruption of fault currents. The electrical switchgear which includes a plurality of contact fingers arranged to divide current flowing through the electrical switchgear.
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公开(公告)号：US11387633B2
公开(公告)日：2022-07-12
申请号：US17310202
申请日：2020-01-21
Applicant: ABB Schweiz AG
Inventor： James Mannekutla , Ola Jeppsson , Stefan Valdemarsson
Abstract: An electrical short-circuiting closing switch including an electrically insulating housing; a first electrode having a tapered first electrode opening; a second electrode having a tapered second electrode opening; a movable contact having a tapered profile, the movable contact being movable relative to the housing along a closing axis from an open position, in which the movable contact is electrically disconnected from the second electrode, to a closed position, in which the movable contact electrically connects the first electrode and the second electrode by engaging the tapered profile with the first electrode opening and the second electrode opening; and an actuator arranged to force the movable contact from the open position to the closed position; wherein at least one of the first electrode and the second electrode is flexibly attached to the housing. A switchgear including a closing switch is also provided.
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公开(公告)号：US10665404B2
公开(公告)日：2020-05-26
申请号：US16466955
申请日：2017-11-22
Applicant: ABB Schweiz AG
Inventor： Erik Johansson , Zichi Zhang , Stefan Valdemarsson
Abstract: An electrical DC switching system for extinguishing an electric arc, wherein the electrical DC switching system includes: a contact arrangement having a first contact and a second contact, a current injection circuit including a resonance circuit configured to be connected across the contact arrangement, and a first switch connected to the resonance circuit and to the first contact, wherein the first switch is configured to be switched between an open state and a closed state, wherein in the closed state the first switch is configured to enable an injection current to flow through the resonance circuit in a first flow direction and into the contact arrangement in a direction opposite to a flow direction of a contact arrangement arc current, and an arc chute assembly including a plurality of splitter plates configured to extinguish an electric arc across the first contact and the second contact, wherein each splitter plate of the plurality of splitter plates has a layered configuration including a magnetic layer and two non-magnetic layers.
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