Vacuum Patents (Class 218/118)
  • Patent number: 11152178
    Abstract: Disconnect switches include a housing, a fixed main contact in the housing, a movable main contact in the housing in cooperating alignment with the fixed main contact, a first actuator coupled to the movable main contact, and a second actuator coupled to the housing. The second actuator is configured to apply a motive force to the housing that is in a direction opposing a motive force applied by the first actuator to the movable main contact.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: October 19, 2021
    Assignee: Eaton Intelligent Power Limited
    Inventors: Steven Zhenghong Chen, Mark A. Juds, Paul R. Rakus, Michael Slepian
  • Patent number: 11152174
    Abstract: A vacuum interrupter including a first movable contact and electrode contained within a vacuum chamber, a second movable contact and electrode contained within the vacuum chamber, a first actuator operably coupled to the first movable contact, and a second actuator operably coupled to the second movable contact. The vacuum interrupter also includes a first bellows and first bellows plate operably coupled to the first movable electrode, as well as a second bellows and second bellows plate operably coupled to the second movable electrode. Additionally, the vacuum interrupter includes a first pressure chamber located between the first actuator and the vacuum chamber, and a second pressure chamber located between the second actuator and the vacuum chamber.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: October 19, 2021
    Assignee: Eaton Intelligent Power Limited
    Inventors: Brad Robert Leccia, Steven Zhenghong Chen, Tyler Holp
  • Patent number: 11056299
    Abstract: A vacuum circuit breaker 10 comprising a vacuum interrupter 12 coupled between upper 18 and lower 20 terminals and being operable to make or break an electrical connection between the upper and lower terminals. The circuit breaker has a body 22 formed from electrically insulating material, the vacuum interrupter being located in an internal chamber of the body. The lower terminal 20 comprises a hollow body 26 that forms part of the internal chamber and which is shaped and dimensioned to allow the vacuum interrupter 12 to pass through it. An electrical connector device 50 has a movable part 52 that is connected to the movable contact and an annular fixed part 54 that is connected to the lower terminal 20. The movable part 52 is connected to the first part 54 by flexible connectors 56, and has a socket (58) for engaging an electrical connector 60 of the vacuum interrupter 12. A pulling rod 16 is coupled to the movable contact via the electrical connector 60.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: July 6, 2021
    Assignee: TAVRIDA ELECTRIC HOLDING AG
    Inventors: Sergey Ivanovich Malakhovskiy, Vladimir Sergeevich Minaev
  • Patent number: 10910179
    Abstract: A vacuum circuit breaker comprising a vacuum interrupter (12) coupled between upper (18) and lower (20) terminals and being operable to make or break an electrical connection between the upper and lower terminals. The circuit breaker has a body 22 formed from electrically insulating material, the vacuum interrupter being located in an internal chamber of the body. The circuit breaker body is arranged to provide an isosceles triangle between the upper (C) and lower (A) terminal connection interfaces. This allows the same design of both upper and lower external connectors 80, 82. A pulling rod (16) coupled to the vacuum interrupter comprises a core (70) of heat-resistant plastic co-moulded with a shell (72) formed from impact resistant plastic.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: February 2, 2021
    Assignee: TAVRIDA ELECTRIC HOLDING AG
    Inventors: Sergey Ivanovich Malakhovskiy, Vladimir Sergeevich Minaev
  • Patent number: 10879024
    Abstract: A system for actuating a vacuum bottle of an electrical device, the vacuum bottle comprising a fixed electrode and a moving electrode that is mobile along a longitudinal axis between a closed position and an open position. The actuating system comprises an adjusting nut that is rotatably mobile about the longitudinal axis and driven by a drive device to perform an opening movement of the moving electrode, and an adjusting screw engaging with the adjusting nut in order to vary the moment when the drive device drives the moving electrode. The moving electrode is constrained to translate along the longitudinal axis with the adjusting screw, but is free to rotate relative to the adjusting screw, and the rotation of the adjusting screw is limited by blocking means.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: December 29, 2020
    Assignee: Schneider Electric Industries SAS
    Inventors: François Famy, Emmanuel Kuentz, Pierre Newinger, Denis Milan
  • Patent number: 10840043
    Abstract: An electric terminal for an electric pole unit of a switching device, the electric terminal being adapted to be electrically connected to a current breaking unit of the electric pole unit and to an external conductor and being adapted to be inserted in a corresponding shaped port of an insulating housing of the electric pole unit. The electric terminal comprises one or more first coupling surfaces mating with one or more second coupling surfaces of the insulating housing, the first coupling surfaces abutting against the second coupling surfaces when the electric terminal is inserted in the corresponding shaped port of the insulating housing in such a way to obtain a mechanical coupling by friction between the electric terminal and the insulating housing.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: November 17, 2020
    Assignee: ABB Schweiz AG
    Inventors: Andrea Delpozzo, Emanuele Morelli, Osvaldo Prestini
  • Patent number: 10784659
    Abstract: An apparatus includes a housing having a gas-insulated compartment and a non-gas-insulated receptacle therein. The receptacle is disposed adjacent to the gas-insulated compartment and configured for removable insertion of a circuit interrupter assembly therein. A bus is disposed in the gas-insulated compartment, and a contact is disposed in the receptacle, electrically coupled to the bus in the gas-insulated compartment and configured to mate with a terminal of the circuit interrupter assembly when the circuit interrupter assembly is installed in the receptacle. The receptacle may be configured for insertion of an insulation-encapsulated circuit interrupter pole unit and the apparatus may include at least one flexible insulation member attached to a side wall of the receptacle and configured to engage a sidewall of the pole unit.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: September 22, 2020
    Assignee: Eaton Intelligent Power Limited
    Inventors: Robert Yanniello, Eddie Wilkie
  • Patent number: 10748702
    Abstract: A transformer system includes a transformer and a transformer tank. The transformer tank houses the transformer in a bath of a dielectric fluid. The transformer system also includes a controller, and a fiber optic pressure sensor communicatively coupled to the controller. The fiber optic sensor is disposed in the dielectric fluid and operative to provide an output that varies with the pressure of the dielectric fluid. The controller is operative to determine the pressure of the dielectric fluid based on the output of the fiber optic pressure sensor.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: August 18, 2020
    Assignee: ABB Power Grids Switzerland AG
    Inventor: Luiz V. Cheim
  • Patent number: 10600593
    Abstract: An alternating current vacuum switching device for switching an electrical circuit under load and no load conditions, and optionally short-circuit conditions is disclosed. The switching device comprises: a vacuum evacuated housing; first and second electrodes within the housing; and an actuator for moving the first electrode relative to the second electrode to mechanically engage and disengage the electrodes to perform a switching function, wherein the first electrode is wholly located within the vacuum evacuated housing such that movement of the switching function occurs solely within the housing. By having movement of the switching function solely within the housing, the reliability of the vacuum switching device is improved.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: March 24, 2020
    Assignee: S&C Electric Company
    Inventor: Leslie Thomas Falkingham
  • Patent number: 10573472
    Abstract: In order to optimize the production of electrical switching contacts, particularly for vacuum tubes, a Field Assisted Sintering Technology process is proposed in which an electrical or electromagnetic field supports and/or produces a sintering process for producing semifinished contact elements for electrical switching contacts, contact elements for electrical switching contacts and/or electrical switching contacts, particularly for vacuum tubes. According to an embodiment, the contact material prior to the sintering process is present in such a form that the material composition of the contact material and/or at least one property of the contact material varies in at least one body direction of the finished contact element.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: February 25, 2020
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Dirk Pohle, Wolfgang Rossner, Klaus Schachtschneider, Carsten Schuh
  • Patent number: 10468214
    Abstract: Various embodiments may include a coupling element for an electrical switching device comprising: a first switching contact at a first end of a winding body; a second switching contact; and a rotating body through which the winding body extends. The rotating body rotates on the winding body and the winding body translates along its longitudinal axis. A cord is arranged on each of the two sides of the rotating body between the rotating body and the winding body so that winding and unwinding of the cord is caused by opposite rotational movements of the rotating body driving a translational movement of the winding body. The rotating body is coupled to two springs so that a spring force always acts on the rotating body in both directions of rotation. A lock blocks the rotating body in at least two extreme positions of the translational movement of the winding body.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: November 5, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Gerit Ebelsberger, Georg Bachmaier, Matthias Gerlich, Sylvio Kosse, Wolfgang Zöls
  • Patent number: 10418192
    Abstract: A vacuum interrupter is provided for use in a low voltage residential circuit breaker. The vacuum interrupter comprises a sealed vacuum tube. The sealed vacuum tube is being closed at a first end with an end plate and closed at a second end with an end spring. The vacuum interrupter comprises a first contact terminal passing through the end plate and having a fixed contact near a distal end of the first contact terminal. The vacuum interrupter comprises a second contact terminal having a free end. The second contact terminal passing through the end spring and having a movable contact being configured to contact the fixed contact of the first contact terminal. The end spring is configured to receive a force on the free end of the second contact terminal to provide open or close operations of the vacuum interrupter.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: September 17, 2019
    Assignee: SIEMENS INDUSTRY, INC.
    Inventor: Guang Yang
  • Patent number: 10276318
    Abstract: In accordance with certain embodiments, an improved switching mechanism and related components are provided.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: April 30, 2019
    Assignee: Innovative Switchgear IP, LLC
    Inventor: Roger L. Schafer
  • Patent number: 9825390
    Abstract: An improved connection apparatus that meets these and other needs includes, in one embodiment, an approximately J-shaped flexible conductor having at its end an opening that receives therethrough a portion of the shank for mechanical and electrical connection therebetween. The conductor further includes a hole formed therein at approximately its midpoint that receives therein, in a movable and non-contacting fashion, another portion of the elongated shank. In another pair of embodiments, another connection apparatus includes a flexible conductor that is co-formed with a rigid conductor to form a single piece unitary element. The free end of the flexible conductor is connected with the movable shank, and the rigid conductor is connectable with the primary conductor of the circuit. By providing the flexible conductor and the rigid conductor as a co-formed unit, a detachable fastener need not be employed to provide a connection therebetween, which reduces heat generation.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: November 21, 2017
    Assignee: EATON CORPORATION
    Inventors: Qing Qi Chen, Li Hua Bao, Yi Feng Wang, Yudong Tian
  • Patent number: 9766641
    Abstract: An on-load tap-changer for dry transformers, having an electric insulating hollow casing extending around a virtual axis, wherein several electric contact sections are foreseen along a path on the inner surface of the hollow casing, which are electrically joined through the wall of the hollow casing and a selector contact in the inner of the cylinder which is moveable along the path and that's outer end is selectively connectable with one of the contact sections by a respective movement. Respective cables are foreseen to electrically connect the contact sections from the radial outer side of the hollow casing, wherein at least some of the cables have a respective surrounding outer insulation at least at their respective connected end.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: September 19, 2017
    Assignee: ABB SCHWEIZ AG
    Inventors: Martin Carlen, Jens Tepper, Benjamin Weber
  • Patent number: 9646778
    Abstract: An operating device for a disconnector includes a drive unit, a Geneva mechanism, and a wire. The drive unit includes a forwardly and reversely rotatable motor serving as a drive source for driving a movable contactor of the disconnector, a power source supplying power to the motor, and a first pulley connected to a rotary shaft of the motor, and is disposed apart from the disconnector. The Geneva mechanism includes a second pulley that rotates in the same direction as the first pulley with the rotation of the first pulley, and a driven wheel that is intermittently driven while the second pulley rotates and that is provided with a rotary shaft connected to the movable contactor, and is attached to the disconnector apart from the drive unit. Further, as a flexible rotational force transmission member, a wire is stretched between the second pulley and the first pulley.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: May 9, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shogo Kobayashi, Yosuke Kuruma, Tsuyoshi Mori, Osamu Kisanuki
  • Patent number: 9431195
    Abstract: A circuit interruption device includes at least one constriction zone. The constriction zone provides for interference with arcing of an electrical signal. The device may include at least one expansion zone. The device may include at least one movable component to assist in creation of the at least one constriction zone. A method of fabrication is provided.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: August 30, 2016
    Assignee: Sensata Technologies, Inc.
    Inventors: Michael Lavado, Eric Morrison, William Bentley, Peter Berg, Keith Kawate, Thomas Gasper, Keith Singer, Keith Washburn, Joseph L. Medeiros, Chistian Pellon
  • Patent number: 9407083
    Abstract: A system and method for suppressing a subtransient current and an overvoltage in a power system. A subtransient current is identified at a location in the power system. The subtransient current at the location in the power system is directed to ground for a time delay in response to identifying the subtransient current at the location in the power system. Directing the subtransient current at the location in the power system to ground is ceased in response to identifying an end of the time delay. An overvoltage is identified at the location in the power system. The overvoltage at the location in the power system is suppressed in response to identifying the overvoltage at the location in the power system.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: August 2, 2016
    Assignee: THE BOEING COMPANY
    Inventors: Robert D. Holley, Thomas F. Currier, Eugene V. Solodovnik, Farhad Nozari
  • Patent number: 9330867
    Abstract: An electrode extension assembly is for a vacuum switching apparatus, such as a vacuum interrupter, including a vacuum envelope and separable contact assemblies. Each contact assembly includes a contact disposed in the interior of the vacuum envelope, and an electrode stem extending outwardly from the contact to the exterior of the vacuum envelope. The electrode extension assembly includes a number of extension members each being be joined to the electrode stem of a corresponding one of the contact assemblies on the exterior of the vacuum envelope by a welded joint formed by electron beam welding or plasma welding.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: May 3, 2016
    Assignee: EATON CORPORATION
    Inventors: Martin B.J. Leusenkamp, Yucheng Li, Xuefei Chen, Lihua Bao, Louis G. Campbell
  • Patent number: 9324520
    Abstract: The disclosure relates to a vacuum chamber including at least one ceramic isolating cylinder with two face ends. At least one of the two face ends of the ceramic isolating cylinder is closed by a metallic cover including an outer and an inner part. A distal end of the outer part of the metallic cover is thinner relative to the remainder of the outer part of the metallic cover and forms a metallic lid. The metallic lid is connected to at least one of the two face ends of the ceramic isolating cylinder in a vacuum tight manner. The metallic cover can be formed in one piece and fits with the inner part of the metallic cover at an inner girthed area of the ceramic isolating cylinder to realize a self-centering of the metallic lid to at least one of the two face ends of the ceramic isolating cylinder.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: April 26, 2016
    Assignee: ABB TECHNOLOGY AG
    Inventor: Dietmar Gentsch
  • Patent number: 9263874
    Abstract: A gas-insulated substation having an enclosure filled with dielectric gas under pressure, comprising one electrical conductor (1) designed to be live that is of longitudinal axis (X) and placed inside the enclosure (6), and two grading shields (10, 12) surrounding in part the conductor (1), at least one of the grading shields (10) comprising a hollow electrically conductive body (14) of longitudinal axis that is substantially coaxial with the axis of the casing (6), said body (14) comprising an annular depression (22) in its outer surface and orifices (26) passing through said body (14) made in a bottom of said annular depression. Said orifices (26) ensure that the dielectric gas flows between an inside zone and a zone that is outside the grading shield (10) by convection exchange.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: February 16, 2016
    Assignee: ALSTOM TECHNOLOGY LTD.
    Inventors: Chakib Fnineche, Jean-Alain Rodriguez
  • Patent number: 9127751
    Abstract: A gearbox for a tap changer. The gearbox has an input drive shaft arranged to be connected to a motor. The gearbox also has a diverter switch drive output with a diverter shaft. The diverter switch drive output is arranged to be connected for actuation of breakers in a diverter switch of the tap changer. The gearbox further has first and second selector arm drive outputs arranged for actuation of a tap selector of the tap changer. It also has reduction gear means connecting the input drive shaft to the diverter switch drive output and to each of the selector arm drive outputs. Further the gearbox has timing connection means arranged to connect the reduction gear means to each of the selector arm drive outputs. The invention also relates to a tap changer having such a gearbox and to a transformer provided with such a tap changer.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: September 8, 2015
    Assignee: ABB Research Ltd.
    Inventor: Jean Mathae
  • Patent number: 9082573
    Abstract: Disclosed is a change-over selector with a vacuum arc extinguishing circuit, including a central shaft, a moving contact driven by the central shaft to rotate, and a first static contact and a second static contact circularly arranged on insulation laths of a cage body of the change-over selector, where the moving contact is driven by the central shaft to rotate to switch between the first static contact and the second static contact, the moving contact and the first and second static contacts form a change-over selection main-circuit, a vacuum arc extinguishing sub-circuit including a vacuum tube is connected in parallel to the change-over selection main-circuit, the vacuum tube is opened after the moving contact is separated from the first static contact, and the vacuum tube is closed before the moving contact is electrically connected to the second static contact.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: July 14, 2015
    Assignee: SHANGHAI HUAMING POWER EQUIPMENT CO. LTD
    Inventors: Qiang Zhu, Yiming Yu, Chengbao Wang
  • Publication number: 20150144597
    Abstract: A vacuum circuit breaker includes a frame and a vacuum interrupter supported by the frame. A control wiring harness exits from an opening in a top face of a housing portion of the frame and a terminal block is disposed on the top face of the housing portion and includes first terminals connected to wires of the control wiring harness and second terminals configured to be connected to external wires.
    Type: Application
    Filed: November 22, 2013
    Publication date: May 28, 2015
    Applicant: Eaton Corporation
    Inventors: James Jeffery Benke, Daniel Evan Palmieri, Zachary Ryan Jenkins, Matthew Eugene Siegfried
  • Patent number: 9006600
    Abstract: An electrode assembly for a circuit breaker is provided. The electrode assembly includes a conductive assembly and a heat transfer assembly. The conductive assembly includes a stem portion and a contact portion. The heat transfer assembly includes a number of elongated bodies, a first heat transfer surface, and a second heat transfer surface. The first heat transfer surface is disposed on the conductive assembly. Each heat transfer assembly body includes a second heat transfer surface. Each heat transfer assembly body is coupled to the conductive assembly with the first heat transfer surface coupled to a number of second heat transfer surfaces.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: April 14, 2015
    Assignee: Eaton Corporation
    Inventors: Martin Leusenkamp, Li Yu
  • Patent number: 8975551
    Abstract: An arc chamber for a circuit breaker has first and second mounting bodies. The mounting bodies are disposed at the ends of an electrically insulating insulation section of the arc chamber. The insulation section is formed of at least two shell-shaped partial sections. The partial sections are curved concavely relative to a longitudinal axis of the arc chamber. A gap is formed between the edges of the bodies of the partial sections.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: March 10, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Guenter Kaulfuss, Volker Lehmann, Karl Mascher, Peter Milewski
  • Publication number: 20150060409
    Abstract: An object is to obtain a vacuum switch that can achieve higher insulation properties to improve reliability. In a vacuum switch for interrupting a single-phase alternating current, three vacuum valves (VI) for a three-phase alternating current are coupled together in series. Specifically, the three vacuum valves for a three-phase alternating current are coupled together in such a manner that the current flows through adjacent vacuum valves in the same direction or in such a manner that the current flows through adjacent vacuum valves in different directions.
    Type: Application
    Filed: January 21, 2013
    Publication date: March 5, 2015
    Inventors: Shinsuke Iitsuka, Kenji Tsuchiya, Ayumu Morita, Hiroyuki Shirai
  • Patent number: 8941022
    Abstract: A switching apparatus includes: a vacuum valve which houses a fixed side electrode fixed to a fixed current-carrying shaft and a movable side electrode fixed to a movable current-carrying shaft coaxially arranged with the fixed current-carrying shaft in face-to-face relation to the fixed side electrode; and a buffering mechanism which is coaxially disposed with the fixed current-carrying shaft on the fixed side of the vacuum valve and reduces a collision load at the time when the movable side electrode is close contact with the fixed side electrode.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: January 27, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Taehyun Kim, Haruhiko Shimoji
  • Patent number: 8937262
    Abstract: The invention relates to a medium voltage switchgear assembly which comprises at least one disconnector and whose drive unit is disposed inside or outside a gas chamber according to the generic part of claim 1. In order to further develop a switchgear assembly of the generic type so as to render the same more compact and more functional, the disconnector is embodied as a three-position vacuum chamber switch.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: January 20, 2015
    Assignee: ABB Technology AG
    Inventors: Dietmar Gentsch, Maik Hyrenbach, Harald Fink
  • Patent number: 8933357
    Abstract: The present disclosure relates to a vacuum interrupter capable of easily installing a central arc shielding plate in alignment without biasing in a radial direction. The vacuum interrupter includes a protruding guide unit protruding from a stationary electrode seal cup in a perpendicular direction to guide the installation of the central arc shielding plate such that the central arc shielding plate can be aligned in a radial direction.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: January 13, 2015
    Assignee: LSIS Co., Ltd.
    Inventors: Byung Chul Kim, Sung Tae Kim
  • Patent number: 8896988
    Abstract: A system having electrical equipment integrated on a structure is provided. The system includes at least one electrical equipment located at a spaced apart relationship and mounted on at least one structure. A method is provided for isolation of electrical equipment. The method includes opening and closing a contact by engaging or disengaging one or more terminals of the electrical equipment correspondingly with a supply line or a distribution line by a mechanism for isolation. The mechanism can be a handle or a moving mechanism which is associated with a movement in a vertical direction or horizontal direction or with a movement that provides isolation.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: November 25, 2014
    Assignee: ABB Technology AG
    Inventors: Dukkaiappan Subbaiahthever, Ramesh Viswanathan, Balachandra Narayan Varade, Maheswaran Chandrasekaran, Satish Baburao Bhalerao, Kishor Bhikaji Wadhe
  • Patent number: 8895883
    Abstract: A circuit breaker is disclosed. The circuit breaker includes a first current path section and a second current path section. At least one of the first and second current path section includes a first current path section member and at least one second current path section member. The at least one second current path section member is arranged in spaced relation to a surface of the first current path section member. The at least one second current path section member is electrically coupled with the first current path section member via at least a first coupling surface portion of the surface of the first current path section member.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: November 25, 2014
    Assignee: ABB Technology AG
    Inventor: Ulf Akesson
  • Patent number: 8869393
    Abstract: A contact piece for a vacuum interrupter chamber includes at least two layers and soldering foil interposed between the at least two layers and directly contacting the closest of the at least two layers. The at least two layers are soldered to one another in a soldering furnace with the interposed soldering foil. The at least two layers are present, prior to the soldering operation, as powder-metallurgical pressed green compacts, which are sintered at the same time as the soldering operation.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: October 28, 2014
    Assignee: ABB Technology AG
    Inventors: Dietmar Gentsch, Günter Pilsinger
  • Patent number: 8822869
    Abstract: A switching mechanism for a gas insulated switchgear includes: a stationary contactor having a stationary arc contactor portion and a stationary main contactor portion; a movable arc contactor which is linearly movable; a movable main contactor which is linearly movable; a cylinder rod which provides driving power for linear motion to the movable main contactor and the movable arc contactor; a connecting rod which is connected to the cylinder rod; a stationary cylinder having a hollow guide tube portion for guiding the linear motion of the cylinder rod and the connecting rod; and a spring which charges elastic energy when the movable main contactor and the movable arc contactor move to the contacting position and discharge the elastic energy when the movable main contactor and the movable arc contactor move to the separating position.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: September 2, 2014
    Assignee: LSIS Co., Ltd.
    Inventor: Man Seung Yeon
  • Patent number: 8822870
    Abstract: A dielectric insulation medium including a fluoroketone containing 5 carbon atoms, in a mixture with a dielectric insulation gas component different from the fluoroketone, in particular air or an air component, the dielectric insulation medium, in particular the dielectric insulation gas, having a non-linearly increased dielectric strength that is larger than a sum of dielectric strengths of the gas components of the dielectric insulation medium.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: September 2, 2014
    Assignee: ABB Technology Ltd.
    Inventors: Javier Mantilla, Max-Steffen Claessens, Nicola Gariboldi, Stephan Grob, Per Skarby, Thomas Alfred Paul, Navid Mahdizadeh
  • Patent number: 8779317
    Abstract: The contact assembly for a vacuum interrupter, comprises: a fixed contact; a fixed electrode coupled to the fixed contact; a movable contact movable to a first position at which the movable contact comes into contact with the fixed contact and a second position at which the movable contact is separated from the fixed contact; a movable electrode coupled to the movable contact and movable with the movable contact; and a contact support member installed to be in contact with the movable contact on the circumference of the movable electrode and increase a contact area contacting the movable contact together with the movable electrode in order to reduce stress applied to the movable contact and the movable electrode when the movable contact moves to the first position.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: July 15, 2014
    Assignee: LSIS Co., Ltd.
    Inventor: Sung Tae Kim
  • Patent number: 8779319
    Abstract: Terminals for a vacuum circuit breaker include: a first terminal having a plurality of supporting rings, a plurality of finger contactors, and ring-shaped springs installed to contact an outer circumferential surface of the finger contactors so as to provide an elastic force to the finger contactors toward the center; a second terminal having an outer diameter larger than an inner diameter of the first terminal formed by an inner circumferential surface of the finger contactors of the first terminal, and configured by a bushing-type electric conductor; and an insulation guide member detachably fixed to a leading end of the second terminal such that an electric insulating property of the second terminal increases when the first and second terminals are disconnected from each other, having an electric insulating property, and tapered so as to have a decreased outer diameter as a distance from the second terminal becomes long.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: July 15, 2014
    Assignee: LSIS Co., Ltd.
    Inventors: Seung Pil Yang, Hyun Jae Kim
  • Patent number: 8754346
    Abstract: A fixed electrode 10 and a movable electrode have coil electrodes formed of plural coil portions installed at both contacts and on a rear surface side in a divided manner in a circumferential direction along peripheries of the contacts such that a longitudinal field is generated in a direction in which the fixed contact and the movable contact come close to and move apart from each other. Protruding portions joined to the contacts are provided to tip ends of the respective coil portions to form joint portions to the respective contacts. A current to be flowed is controlled by changing resistance values between the contacts and the coil electrodes for each joint portion.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: June 17, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takakazu Harada, Takayuki Itotani
  • Patent number: 8729417
    Abstract: The present disclosure provides a method of manufacturing a current terminal for an embedded pole part, in which a vacuum interrupter is molded by an isolating coverage in a hot and pressure injection process, and such a pole part. At the position of the upper electric terminal at the fixed contact side of the vacuum interrupter, a pressure protecting element is placed into the mold, at least close to the upper part the fixed contact side of the vacuum interrupter and/or together with it, and the protecting element, the terminal and the vacuum interrupter are embedded by injection molding.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: May 20, 2014
    Assignee: ABB Technology AG
    Inventors: Christof Humpert, Wenkai Shang
  • Patent number: 8729416
    Abstract: A circuit breaker module (which may also be termed an interrupter) including circuit breaker contacts which are opened and closed by an electrically-activated magnetic actuator and capable of interrupting fault currents. The magnetic actuator is stable in either a breaker-closed state or a breaker-open state without requiring electrical current flow through the magnetic actuator. An externally-connectable mechanical drive is linked to the magnetic actuator in a manner such that movement of the externally-connectable mechanical drive can destabilize the breaker-closed state to open the circuit breaker contacts. An external actuator activated by an external condition is connected to said externally-connectable mechanical drive so as to cause said circuit breaker contacts to open upon occurrence of the external condition.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: May 20, 2014
    Assignee: Electro-Mechanical Corporation
    Inventors: Scott A. Bullock, Garry F. Raines
  • Patent number: 8723070
    Abstract: A power switchgear according to the present invention includes a pass-through hole which is formed in a fixed side contact case that is supported by a fixed side insulation supporter to fix and retain the fixed side of a vacuum valve and has a larger inner diameter than an outer diameter of the vacuum valve so that the vacuum valve is capable of horizontally passing through and the fixed side end portion of the vacuum valve is placed by passing through; and a fixed side connection conductor attached to the fixed side contact case and connected to the fixed side end portion of the vacuum valve.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: May 13, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Satoru Yoshida, Tomotaka Yano, Masahiro Arioka, Koji Sano
  • Patent number: 8677609
    Abstract: Exemplary embodiments of the present disclosure are directed to a method for producing a circuit-breaker pole part by molding an external insulating sleeve with insulation material, mounting a vacuum interrupter insert inside the insulating sleeve, electrically connecting the vacuum interrupter insert with an upper electrical terminal and a lower electrical terminal arranged in the wall section of the insulating sleeve The method also includes molding the external insulating sleeve, wherein only the upper electrical terminal is embedded in the insulation material, coating the vacuum interrupter insert with an extra layer made of insulation material for thermo extension compensation, mounting the coated vacuum interrupter insert by screwing on a threaded bolt onto the upper electrical terminal.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: March 25, 2014
    Assignee: ABB Technology AG
    Inventor: Wenkai Shang
  • Patent number: 8680421
    Abstract: An encapsulated switchgear that includes a housing defining, an insulating space, and an electrical active part arranged in the insulating space, the insulating space with an insulation medium. The switchgear is characterized in that the insulation medium with a dielectric compound having a boiling point of above ?25° C.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: March 25, 2014
    Assignee: ABB Technology AG
    Inventors: Maik Hyrenbach, Ole Granhaug, Max-Steffen Claessens, Per Skarby
  • Publication number: 20140054270
    Abstract: In an electrical distribution system having an arc management system for removal of arcing voltage from feeder circuits triggered at least in part by light signals, a secondary optical detector monitors a downstream branch circuit breaker in the feeder circuit compartment to produce an optical signal for arc detection more accurately reflecting the possibility of an arcing fault.
    Type: Application
    Filed: August 24, 2012
    Publication date: February 27, 2014
    Applicant: SCHNEIDER ELECTRIC USA, INC.
    Inventor: Timothy B. Phillips
  • Patent number: 8653398
    Abstract: An electrical circuit-breaker device includes at least one pole part with a respective housing arrangement for encapsulating an interrupter insert having two corresponding electrical contacts, and an adjacent actuator part for mechanically moving one of the electrical contacts via an intermediate operating mechanism. A method of producing the device includes molding a multi-chamber housing by injection molding of plastic material with a first chamber and at least one further chamber, assembling the actuator part in the first chamber and the at least one respective interrupter insert in its own further chamber, and assembling the intermediate operating mechanism through an assembly opening in a common side wall between the first chamber and the at least one further chamber.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: February 18, 2014
    Assignee: ABB Technology AG
    Inventor: Dietmar Gentsch
  • Publication number: 20140027408
    Abstract: A circuit breaker according to the present disclosure includes a cradle having an accommodation space therein, the cradle having a plurality of terminals and a breaker main body having a plurality of terminal connectors contactable with the terminals, respectively, and a plurality of vacuum interrupters connected to the terminal connectors, respectively, the breaker main body being installed within the cradle to be movable between a connected position where the terminal connectors are connected to the terminals and a disconnected position where the terminal connectors are separated from the terminals. Each of the terminal connectors to includes a plurality of segment conductors each having one end connected to the vacuum interrupter and the other end facing the terminal. According to the configuration, an amount of heat radiated may increase without an increase in an amount of copper used, thereby facilitating for cooling the terminal connectors.
    Type: Application
    Filed: June 17, 2013
    Publication date: January 30, 2014
    Inventors: Seung Pil YANG, Hong Ik YANG
  • Patent number: 8549734
    Abstract: A method for manufacturing a sealed contact point is performed by injecting an arc extinguishing gas into an air-tight space of an electromagnetic switching device and sealing it. The method for manufacturing a sealed contactor, including: forming a driving body and coupling a housing and a plate; air-tightly fixing a detachable chamber and forming the interior of the chamber under an insulating gas atmosphere; tightly attaching the cylinder to the plate by a tight-attachment inducing member within the chamber under the insulating gas atmosphere to form a sealing structure; exhausting the chamber; disassembling the chamber from the plate; and sealing the tightly attached plate and the cylinder.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: October 8, 2013
    Assignee: LSIS Co., Ltd.
    Inventor: Young Myoung Yeon
  • Patent number: 8519812
    Abstract: The present invention relates to a vacuum interrupter in a vacuum circuit breaker. According to the present invention, there is provided an attraction member made of a ferromagnetic body for surrounding between the stationary electrode and movable electrode to attract a radial magnetic field generated in a radial direction between the stationary electrode and movable electrode by means of the attraction member, and through this a component of the radial magnetic field may be increased in an overall horizontal direction between the stationary electrode and movable electrode, and as a result the radial magnetic field may be further enhanced between both electrodes, thereby strengthening an arc driving force.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: August 27, 2013
    Assignee: LSIS Co., Ltd.
    Inventor: Byung Chul Kim
  • Patent number: 8507822
    Abstract: A contact is for a vacuum interrupter. The contact includes a contact member having a generally planar mating surface with a planar contact plane and a plurality of purposely introduced undulations therein. The undulations are structured to contact a plurality of purposely introduced undulations of another contact member. The undulations are in a dimension perpendicular to the planar contact plane. The planar contact plane has a diameter. The undulations have a depth substantially smaller than the diameter of the planar contact plane.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: August 13, 2013
    Assignee: Eaton Corporation
    Inventor: Wangpei Li
  • Patent number: 8497446
    Abstract: An encapsulated vacuum interrupter with grounded end cup and drive rod is disclosed. The double break vacuum interrupter includes a first contact system including an annular stationary contact which is engaged by a primary moving contact with the moving contact drive rod extending through the primary moving contact and through the opening of the annular stationary contact. A second contact system includes a secondary moving contact placed on the end of the moving contact rod, which engages and operates a floating contact, which moves along the same axis. A mechanical adjustment system is provided for the floating contact. A coaxial moving contact drive rod system is provided. With the encapsulated vacuum interrupter, the lower portion of the vacuum envelope is insulated from the current path, which allows for the elimination of the long internal cavity in the encapsulation as the lower end cup of the vacuum envelope may be grounded.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: July 30, 2013
    Inventor: Michael David Glaser