Air-current Blowout Patents (Class 218/43)
  • Patent number: 11130093
    Abstract: An oxygen supplying apparatus includes: an oxygen enriching module including a plurality of oxygen enriching units; a pressure boosting module which receives the oxygen-enriched gas from the oxygen enriching module and boosts pressure of the oxygen-enriched gas; and a controller controlling operations of the oxygen enriching module and the pressure boosting module. The pressure boosting module includes: a low-pressure tank which receives and stores the oxygen-enriched gas from the oxygen enriching module; a pressure booster which boosts pressure of the oxygen-enriched gas discharged from the low-pressure tank; a high-pressure tank stores the oxygen-enriched gas pressure-boosted by the pressure booster; and at least one bypass valve which is provided to a bypass passage for bypassing a portion of the pressure-boosted oxygen-enriched gas stored in the high-pressure tank to the low-pressure tank to regulate bypassing of the oxygen-enriched gas from the high-pressure tank to the low-pressure tank.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: September 28, 2021
    Assignee: OXUS CO., LTD.
    Inventors: Hyeon Seong Kim, Seung Kwon Oh, Jee Soo Kwak, Kang Han Lee, Myeong Gu Kim
  • Patent number: 10910178
    Abstract: A particle extraction system for an electrical interrupter is disclosed in the present application. The particle extraction system includes a support bay configured to hold an electrical interrupter in position during a particle extraction event. An actuator system is operable for cycling the interrupter to dislodge and release foreign particles internal to the interrupter. A fluid source and pumping system is in fluid communication with at least one internal flowpath within the interrupter to entrain and transport the released particle from the interrupter. A vacuum slot is operable for receiving a fluid flow with entrained particles and transporting the particles to a particle capture device.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: February 2, 2021
    Assignee: ABB POWER GRIDS SWITZERLAND AG
    Inventors: Christian Daehler, Jeffrey H. Lange, Mark Licastro
  • Patent number: 10746311
    Abstract: To improve the reliability of gas space monitoring of a gas space (17) of an electrical system (40) filled with a harmful gas, the invention provides a multi-path valve device (44) for connecting a density monitor (20) to a system to be monitored for gas density, comprising a first gas connection (13) for connecting the valve device (44) to the system, a second gas connection (14) for connection to the density monitor (20), a third gas connection (15) for connection of a testing device (19) for testing the function of the density monitor (20), and switching device for selectively connecting the second gas connection (14) to the first gas connection (13) or the third gas connection (15).
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: August 18, 2020
    Assignee: Trafag AG
    Inventors: Remo Halbheer, Dieter Zeisel
  • Patent number: 10566159
    Abstract: The present application relates to an apparatus for the generation, transmission, distribution and/or usage of electrical energy, the apparatus including a housing enclosing an insulation space and an electrically conductive part arranged in the insulation space, wherein the insulating space contains a dielectric fluid including carbon dioxide and oxygen. In the apparatus an oxidation catalyst is arranged that includes noble metal particles coated onto or embedded into a carrier and serves for the catalytic oxidation of carbon monoxide to carbon dioxide.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: February 18, 2020
    Assignee: ABB Schweiz AG
    Inventors: Javier Mantilla, Max Claessens, Ryan-Gerald Anderson
  • Patent number: 10522981
    Abstract: The present invention relates to an electrical apparatus for generation, transmission, distribution and/or usage of electrical energy, comprising a housing enclosing an electrical apparatus interior space, at least a portion of which forms at least one insulation space having an electrical component and containing a surrounding insulation medium comprising an amount of carbon dioxide mco2. The insulation space is formed by at least one insulation space compartment, in which an adsorber for reducing or eliminating the amount of water mH2O and optionally further contaminants from the insulation medium is arranged. The amount of adsorber mads arranged in the at least one insulation space compartment complies with the formulae (I) and (II). m ads ? m H 2 ? O k ads , H 2 ? O ( I ) m ads ? 0.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: December 31, 2019
    Assignee: ABB Schweiz AG
    Inventors: Denis Tehlar, Navid Mahdizadeh, Thomas Alfred Paul
  • Patent number: 10256060
    Abstract: Realized is a shape of a grooved cam that maximizes break performance by appropriately setting an electrode operation, with a minimum weight increase.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: April 9, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Masanao Terada, Taichiro Yamashita, Hiroaki Hashimoto, Hajime Urai, Makoto Hirose
  • Patent number: 9899167
    Abstract: An electrical switching device is filled with a dielectric insulating medium comprising an organofluorine compound, in particular a fluoroether, a fluoroarnine, a fluoroketone or a fluoroolefin, and comprises at least an arcing contact arrangement with a first arcing contact and a mating second arcing contact. At least a first intermediate volume is provided downstream from the first arcing contact, and/or at least a second intermediate volume is provided downstream from the second arcing contact. The intermediate volumes are for intermediate pressure enhancement and exhaust gas jet formation for turbulent convective heat transfer to metal walls of the exhaust system. In embodiments, the first and/or second intermediate volume is delimited by at least one moveable wall arranged transversally to the longitudinal axis and shiftable parallel to it by an actuation device.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: February 20, 2018
    Assignee: ABB Schweiz AG
    Inventors: Javier Mantilla Florez, Xiangyang Ye, Mahesh Dhotre, Oliver Cossalter, Stephan Grob
  • Patent number: 9837230
    Abstract: Gas-insulated high voltage puffer breaker comprising a puffer unit with a movable piston running in a puffer cylinder and delimiting a puffer volume. A piston and a first contact member are attached to a piston stem. A piston and a first contact member are attached to a piston stem. An electric arc is extinguishable in an arcing zone when the first contact member moves from a first position to a second position. The puffer volume is fluidly connected to a gas nozzle by a gas channel such that the puffer volume comprises the gas channel as well as a portion of the puffer cylinder. The gas channel is provided radially outside of the puffer cylinder between a puffer cylinder wall delimiting the puffer cylinder and a wall structure of the puffer unit.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: December 5, 2017
    Assignee: ABB Schweiz AG
    Inventors: Markus Bujotzek, Angelos Garyfallos, Philipp Simka, Emmanouil Panousis, Nitesh Ranjan
  • Patent number: 9799472
    Abstract: A gas insulated high voltage electrical device comprising: at least one conductor for conducting a high voltage current; a longitudinal enclosure for enclosing the at least one conductor, the longitudinal enclosure comprising an interior wall extending along a longitudinal axis; a particle trap formed on the interior wall and extending along the longitudinal axis, the particle trap comprising a part of the interior wall and a longitudinal shielding cover extending along the longitudinal axis to delimit a dielectrically shielding area in the enclosure for trapping particles; the shielding cover being made of an electrically conducting material and comprising at least two electrical connections to the interior wall spaced from each other along the longitudinal axis, the shielding cover comprising a mechanical resonating frequency that makes the shielding cover longitudinally oscillate when the high voltage current passes through the conductor.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: October 24, 2017
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Victor F. Hermosillo, Justin M. Rebovich
  • Patent number: 9741514
    Abstract: A switching arrangement has a first contact set and a second contact set which can be moved with respect to the first contact set, and an insulating nozzle arrangement. The insulating nozzle arrangement is supported on the first contact set which includes a first arcing contact piece. The first arcing contact piece can be moved with respect to the insulating nozzle arrangement.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: August 22, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Radu-Marian Cernat, Martin Krehnke, Volker Lehmann, Friedrich Loebner, Andrzej Nowakowski
  • Patent number: 9673592
    Abstract: An x-ray tube includes a vacuum housing. A cathode and an anode are disposed in the vacuum housing and insulated by at least one insulation element. Upon application of a high voltage, the cathode emits electrons that strike the anode as an electron beam. A voltage arrester device with an insulation path has a field strength that is higher than a field strength at the insulation element. If a voltage flashover occurs, the voltage is discharged via the voltage arrester device.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: June 6, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ronald Dittrich, Thomas Ferger, Christian Hoffmann
  • Patent number: 9552942
    Abstract: A gas circuit breaker includes contact rings formed of an elastically deformable material, a movable contact that moves reciprocally along an axis line direction between a current supply position where the movable contact bridges the contact rings and a current cutoff position where the movable contact is separated from both the contact rings, holding tools formed in an annular shape and respectively attached to the contact rings, a covering member having electrically insulating property, slidably attached to a distal end portion of the holding tool in the axis line direction, and configured to be brought into contact with the contact ring, and a covering member having electrically insulating property, slidably attached to a distal end portion of the holding tool in the axis line direction, and configured to be brought into contact with the contact ring.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: January 24, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Toru Yamashita, Daisuke Yoshida, Hirokazu Otani
  • Patent number: 9377009
    Abstract: An electric assembly for electrically connecting at least one wind turbine being located off-shore with an electric subsea cable being connected to an on-shore power grid is provided. The electric assembly has (a) a transformer for transforming a first voltage level being provided by the at least one wind turbine to a second voltage level of the subsea cable, and (b) an external equipment being electrically and mechanically connected to the transformer for controlling an operation of at least the transformer. The transformer and the electric equipment are formed by a preinstalled package, which can be mechanically handled as a single piece. Further, a wind turbine having such an electric assembly, a wind turbine cluster having such a wind turbine, and a method for mounting such an electric assembly to a tower of a wind turbine are provided.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: June 28, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jesper Moeller, Henrik Stiesdal, Jan Thisted
  • Patent number: 9279858
    Abstract: The disclosure relates to a cubicle type gas insulated switchgear monitoring and diagnosis system that is able to remotely monitor and diagnose the state by measuring and analyzing in real time deterioration of a gas section and the operation state and the integrity assessment of a breaking unit in a cubicle gas insulated switchgear. The system includes the cubicle gas insulated switchgear, a Slave Data Acquisition System connected to the cubicle gas insulated switchgear, and a Master Data Acquisition System that determines deterioration of the cubicle type gas insulated switchgear and the operation state and the integrity assessment of the breaking unit by receiving and analyzing the sensing data from the S-DAS.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: March 8, 2016
    Assignee: HYUNDAI HEAVY INDUSTRIES CO., LTD.
    Inventors: Byoung Woon Min, Chang Sun Park, Hyung Ryun Park, Yong Geun Kim
  • Patent number: 9269514
    Abstract: A protection device for providing protection against the particles generated by an electric arc when a first electrically conductive part and a second electrically conductive part of an electrical connection unit are separated from each other, the protection device including at least one protection element disposed in the proximity of the place at which the first part and the second part separate in order to form a shield against the particles.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: February 23, 2016
    Assignee: Alstom Technology Ltd.
    Inventors: Didier Rodrigues, Denis Frigiere, Jean Marc Willieme, Frank Jacquier
  • Patent number: 9159488
    Abstract: [Task] The present invention aims to provide a vacuum capacitor instrument voltage transformer by which current and voltage can be much precisely measured. [Means for achieving task] The means is so made that a main capacitor portion 8 and a voltage dividing capacitor portion 10 are installed in a earthed vacuum vessel, a main ground circuit 30 is provided through which a leak current I2 flows from an outer surface of the primary line-path side vacuum vessel to the earth E, and a voltage dividing ground circuit 31 is provided through which a leak current I11 flows to the earth E through a voltage dividing insulating cylindrical member 11 that is disposed between an earthed portion and each of the main capacitor portion and the voltage dividing capacitor portion.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: October 13, 2015
    Assignees: MEIDENSHA CORPORATION, TC-TANIC, INCORPORATED
    Inventors: Toru Tanimizu, Toru Nishizawa, Toshimasa Fukai, Kaoru Kitakizaki, Takayoshi Tanimura
  • Patent number: 9147540
    Abstract: A 3-way switch for a gas-insulated apparatus includes a first connecting part and a second connecting part perpendicular to the first connecting part, a support conductor having a first guide hole perpendicular to the direction of the first connecting part and a second guide hole in parallel to the direction of the second connecting part, a disconnecting switch (DS) operating part slidably coupled to the first guide hole, an earthing switch (ES) operating part slidably coupled to the second guide hole such that the ES operating part is perpendicular to the disconnecting switch operating part, and a main lever, one end of which is rotatably coupled to the support conductor and the other end of which is eccentrically rotated and rotatably connected to the DS operating part and the ES operating part for linear sliding of the DS operating part and the ES operating part.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: September 29, 2015
    Assignee: HYUNDAI HEAVY INDUSTRIES CO., LTD.
    Inventor: Chul-Ho Lee
  • Patent number: 9058947
    Abstract: A puffer-type gas circuit-breaker having improved interruption performance and dielectric performance, comprising: a partition wall provided in a stationary cylinder on the moving side of the circuit-breaker to form an intra-stationary cylinder space, a mechanical puffer chamber provided adjacent to one flange of the partition wall and a hot gas exhaust chamber provided on the same side as another flange of the partition wall, wherein the stationary cylinder has gas inlet holes communicated with the intra-stationary cylinder space and formed on one side relative to a virtual plane that bisects the stationary cylinder in a radial direction, gas outlet holes communicated with the intra-stationary cylinder space, and hot gas exhaust openings communicated with the hot gas exhaust chamber, further communicated with the puffer shaft flow hole after an arc is generated and formed in radial directions of the stationary cylinder and on the other side relative to the virtual plane.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: June 16, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Noriyuki Yaginuma, Masanori Tsukushi, Makoto Hirose
  • Patent number: 9035211
    Abstract: A gas-insulated circuit interrupter is disclosed, the interrupter having an improved design for quenching electrical arcs. The interrupter includes a first contact and a second contact configured to alternatively connect to and disconnect from the first contact. One or both of the contacts are at least partially contained in an arcing chamber. The arcing chamber includes the point at which the contacts connect during current-carrying operation of the interrupter. The arcing chamber is at least partially surrounded by a heating chamber for accommodating a quenching gas. A channel connects the heating chamber and the arcing chamber and is positioned to direct the quenching gas toward the first contact and the second contact arcing area. One or more valves direct gas from the arcing chamber to the heating chamber when the interrupter is operated to interrupt a current.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: May 19, 2015
    Assignee: Pennsylvania Breaker, LLC
    Inventor: Daniel C. Schiffbauer
  • Patent number: 9029726
    Abstract: A circuit breaker includes a first contact and a second contact. An electric arc zone is disposed between the contacts. A feed channel opens into the electric arc zone, connecting the electric arc zone to a hot gas reservoir volume. The hot gas reservoir volume, in turn, is connected to a compression volume. An outflow opening is disposed in a wall of the compression volume. The outflow opening is permanently open, at least in a contacting state of the contacts.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: May 12, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventor: Radu-Marian Cernat
  • Patent number: 9018558
    Abstract: The disclosure relates to a gas circuit breaker switch (5) which can be integrated inside a switching device insulated in a dielectric gas, said switch (5) comprising an arc chute (1) inside which a fixed contact (3) and a moving contact (4) are arranged. The integration of the contacts (3, 4) inside at least one casing (19, 20) corresponding to the arc chute (1) allows reducing distances between phases, in addition to preventing any incident in one phase from affecting the remaining phases, and finally more compact electrical equipment is obtained. The switch (5) also comprises at least one generation means (6) for generating at least one gas, at least one blowout/intake means (7) for at least one extinguishing gas and at least one generation means (2) for generating a magnetic field, such that the electric arc generated between the contacts (3, 4) of the switch (5) can be extinguished by combining said means (6, 7, 2).
    Type: Grant
    Filed: May 31, 2010
    Date of Patent: April 28, 2015
    Assignee: Ormazabal Y CIA, S.L.
    Inventors: Norberto Sainz de la Maza Escobal, Juan María Casado Cartón, José Manuel Inchausti Sancho, José María Torres Novalbos
  • Patent number: 8957341
    Abstract: A gas circuit breaker comprising: a sealed tank; two breaking sections disposed in the sealed tank; a bracket to support movable parts of the breaking sections while enabling switching operation of the movable parts; an insulation cylinder to support the bracket through an electric field relaxation shield; an insulated operating rod disposed in the insulation cylinder movably in the axial direction and an end thereof is connected to an actuator; and a link mechanism connected to other end of the insulated rod and transmits drive force from the actuator to the movable parts of the breaking sections, wherein the electric field relaxation shield is provided with out-side groove and in-side groove on the insulation cylinder respectively, and the out-side groove and in-side groove are formed openings at the link mechanism side respectively, and end of the in-side groove is extended to near the outer surrounding of the insulated operating rod.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: February 17, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Wei Zhang, Masanori Tsukushi, Tomoyuki Ando, Michiru Onodera
  • Patent number: 8859924
    Abstract: Provided is a gas circuit breaker. The gas circuit breaker includes a fixed part, a movable part, a piston, and a double compression mechanism. The fixed part includes a fixed arc contact and a first fixed contact maker. The movable part includes a movable arc contact selectively making contact with the fixed arc contact, a cylinder in which the movable arc contact is disposed, and a second fixed contact maker guiding a movement of the cylinder. The piston is disposed in the second fixed contact maker. The double compression mechanism is configured to move the piston in a direction opposite to a moving direction of the movable part when the movable part is moved to separate the fixed arc contact and the movable arc contact for interrupting a fault current.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: October 14, 2014
    Assignee: LSIS Co., Ltd.
    Inventors: Je Uk Yeon, Seok Weon Park, Jong Ung Choi
  • Publication number: 20140291291
    Abstract: A circuit breaker including an ejection device including an arc-extinction medium for improved extinction of an arc formed during a breaker operation and an exhaust-cooling medium for improved cooling of exhaust gases in the circuit breaker. Thereby, the arc-extinction liquid includes an organofluorine compound having a boiling point Tb at 1 bar higher than ?60° C. and being selected from the group of: a fluoroether; a fluoroamine; a fluoroketone; and mixtures thereof.
    Type: Application
    Filed: June 12, 2014
    Publication date: October 2, 2014
    Inventors: Francesco Pisu, Francia Galindo-Lozano, Javier Mantilla, Mathias-Dominic Buergler, Nicola Gariboldi, Oliver Cossalter, Patrick Stoller, Stephan Grob, Sami Kotilainen
  • Patent number: 8779318
    Abstract: A switching device for electric power distribution, electrically connectable to an electrical conductor, the switching device including a breaker electrically connectable to the electrical conductor, and an electrically conductive housing to which the breaker is mounted, the switching device providing a current path between the breaker and the electrical conductor, and the housing houses a guiding member for operating the breaker, the guiding member being movable in relation to the housing, the housing having an outer surface, wherein the housing has a smooth outer shape to distribute the electric field generated by the voltage of the current through the switching device. A switchgear including such a switching device.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: July 15, 2014
    Assignee: ABB Technology AB
    Inventors: Robert Espeseth, Jan-Arild Zinke, Havard Hadland
  • Patent number: 8748770
    Abstract: A power switching apparatus includes: a pressure tank having tube-like openings in a shank portion and having an insulating gas sealed therein; a vacuum valve housed in the pressure tank and connected to the pressure tank at one end; bushing conductors penetrating through the openings of the pressure tank and electrically connected to the vacuum valve; and current transformers provided on an outside of the pressure tank and measuring a current flowing through the bushing conductors. Tube-like current transformer installation portions on which to install the current transformers are provided above the openings of the pressure tank and an outside diameter of the openings of the pressure tank is made larger than an outside diameter of the current transformer installation portions.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: June 10, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuta Nakayama, Masahiro Arioka, Tomotaka Yano, Kyoichi Otsuka, Satoru Yoshida, Koji Sano
  • Patent number: 8735760
    Abstract: A gas insulated switchgear includes stationary contacts, movable contacts contactable with or uncontactable from the stationary contacts, an insulation case housing the stationary contacts and the movable contacts so as to support the same, the insulation case having a shape of a pipe, flanges disposed at an inner circumferential surface of the insulation case in a circumferential direction, each of the flanges having an annular shape, and a collection groove portion formed at the flanges and collecting metal particles generated during contact or separation operation between the stationary contactors and the movable contactors. Under this configuration, the metal particles can be collected and laid in the collection groove portion provided at the flanges, accordingly, the metal particles cannot be stuck on an insulation member or other components of the insulation case, resulting in obviating occurrence of insulation breakdown within the switchgear and improving reliability of a product.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: May 27, 2014
    Assignee: LS Industrial Systems Co., Ltd.
    Inventor: Sang Yong Jin
  • Patent number: 8723069
    Abstract: A high-voltage arrangement has at least one switching device, a housing and a drive for the switching device. The housing is formed with a first housing opening and a second housing opening. Both the first and second housing openings are suitable for the selective fitting of a viewing window or a ground contact connection.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: May 13, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Mario Jecke, Andreas Kleinschmidt
  • Patent number: 8546716
    Abstract: A gas-blast circuit breaker is disclosed which includes a first contact and a second contact which can move relative to one another along a longitudinal axis. A blowout volume is arranged around the first contact. The blowout volume can be connected via a gas channel to an arc zone, in order to blow out an arc which is struck when the first contact is disconnected from the second contact. The blowout volume can be bounded radially on an outside by a separating element which separates the blowout volume from a low-pressure area. A flow opening, which allows a gas exchange, can lead in a radial direction from the low-pressure area into the blowout volume.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: October 1, 2013
    Assignee: ABB Technology AG
    Inventors: Juerg Nufer, Martin Kriegel, Olaf Hunger, Marialuisa Perela
  • Patent number: 8492672
    Abstract: An arc flash arrester includes a fixed contact; a movable contact; an actuator mechanism structured to close the movable and fixed contacts; and insulation disposed between the fixed and movable contacts in an open position of the arc flash arrester. The insulation is selected from the group consisting of liquid insulation; SF6; a gas, other than SF6 or air, at a pressure of at least about one atmospheric pressure; and solid insulation.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: July 23, 2013
    Assignee: Eaton Corporation
    Inventor: John J. Shea
  • Patent number: 8487203
    Abstract: Operating shaft 4 allows disconnecting switch-side and earthing switch-side moving contacts 7a and 7b to linearly reciprocate with the rotation of operating shaft 4. Operating shaft 4 has two-hole lever 5 allow an arc motion. Each one end of two curved links 6a and 6b is connected to two-hole lever 5 and the other end of two curved links 6a and 6b is respectively connected to the disconnecting switch-side moving contact or the earthing switch-side moving contact. When the two connecting points are axisymmetric with respect to the bisector, both the disconnecting switch and the earthing switch are in an open state; when two-hole lever 5 moves at a predetermined angle to the disconnecting switch-side, the disconnecting switch is in a closed state; and when two-hole lever 5 moves at a predetermined angle to the earthing switch-side, the earthing switch is in a closed state.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: July 16, 2013
    Assignee: Japan AE Power Systems Corporation
    Inventors: Taeyong Shin, Kyuji Yaginuma
  • Patent number: 8399791
    Abstract: The invention relates to an interrupter arrangement (1) having a switching tube (3) comprising a switch gas outlet opening (5). The switching tube (3) is connected to a coupling section (9) of a drive rod (10) in the region of the switch gas outlet opening (5). The coupling section (9) is protected from switch gasses emitted from the switch gas outlet opening (5) by means of a shield (15).
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: March 19, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventors: Joachim Gericke, Ronald Puls
  • Patent number: 8168909
    Abstract: A vacuum switchgear comprising a vacuum container, two fixed contacts and two movable contacts for being in contact with and out of contact with the fixed contacts which are disposed in the vacuum container, and two operation rods linked to the each movable contact, respectively, characterized that a connection conductor having a current collector for making electrical sliding contact with the external surface of the each operation rod, which is fixed to outlet parts of the vacuum containers, from which extend the operation rod outwardly.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: May 1, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Masato Kobayashi, Kenji Tsuchiya, Daisuke Sugai
  • Patent number: 8148660
    Abstract: A high-voltage circuit breaker includes two arcing contacts, which are capable of moving relative to one another along an axis, an insulating nozzle, a heating volume for accommodating quenching gas, a heating channel, and an overpressure valve. The pressure of the quenching gas is based on the energy of a switching arc, which is formed when the breaker opens and generates arcing gas, and the heating channel opens out, with axial alignment, into the heating volume. The heating channel connects an arc zone, and the overpressure valve limits the pressure of the quenching gas by opening a relief duct, which opens out into an expansion space. In high-current switching, the pressure of the arcing gases in the arc zone is limited, and the quality of the quenching gas stored in the heating volume is improved, due to the relief duct having an outflow section extending in the radial direction.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: April 3, 2012
    Assignee: ABB Research Ltd
    Inventors: Martin Seeger, Lutz Niemeyer, Arthouros Iordanidis, Christian Franck
  • Patent number: 8044318
    Abstract: A current interrupting chamber comprising a moving assembly movable axially between a start position and an end position of an operation of opening the circuit-breaker. The current interrupting chamber includes a first compression chamber; a hollow drive tube having ports for bringing the interior of the drive tube into communication with the outside of the current interrupting chamber; a second compression chamber; and a structure for obstructing the ports of the drive tube from the start position of an operation of opening the circuit-breaker and up to an intermediate position which is reached between the position of separation of two arcing contacts from each other and the end position of an operation of opening the circuit-breaker.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: October 25, 2011
    Assignee: Areva T&D SA
    Inventors: Denis Dufournet, Dan Penache, Michel Tresy, Michel Perret
  • Patent number: 8000087
    Abstract: Each integral unit is structured by arranging partial units (I), (II), and (Ill) side by side, while line-side devices are branched from positions between the partial units adjacent to each other. Each of the partial units is structured by connecting a current transformer and a disconnector in sequence to each of upper and lower outlets horizontally drawn out from a lateral face of a vertical-type circuit breaker in the same direction. Any two partial units positioned adjacent to each other are connected in series by connecting the disconnectors included therein with a connection bus. The line-side devices are positioned to oppose the circuit breakers while the disconnectors are interposed therebetween. The switchgear includes a plurality of integral units. Two ends of each of the integral units are respectively connected to two main buses that are provided in an upper position and a lower position while the disconnectors are interposed therebetween.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: August 16, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Daisuke Fujita, Takuya Otsuka, Hitoshi Sadakuni
  • Publication number: 20110062116
    Abstract: A self-blowout circuit breaker is disclosed which includes contacts for connecting or disconnecting a circuit, a heating volume, a compression volume and an exhaust volume. The compression volume can be connected to the heating volume by at least one first valve, which heating volume is in turn connected to an arc zone. Upon the disconnection of the circuit, while a first arcing contact is being disconnected from an associated second arcing contact, an arc is produced between the two arcing contacts in the arc zone. The compression volume is separated from the exhaust volume by a combined filling and overpressure valve which is formed as at least one plate, and has at least one tab which is formed in the plate.
    Type: Application
    Filed: September 14, 2010
    Publication date: March 17, 2011
    Applicant: ABB TECHNOLOGY AG
    Inventors: Martin Kriegel, Daniel Ohlsson, Juerg Nufer, Navid Mahdizadeh, Olaf Hunger, Timo Kehr
  • Patent number: 7902478
    Abstract: The switching chamber is intended for a gas-insulated high-voltage switch. It contains a housing filled with insulating gas and a contact arrangement held in the housing. The contact arrangement has, in a coaxial arrangement, the following components: two switching pieces, which are capable of being moved relative to one another along an axis, with in each case one arcing contact and in each case one tubular conductor containing a rated current contact, an insulating nozzle, and a compression apparatus with a fixed piston and a cylinder. A moveable tubular conductor of the two tubular conductors forms the wall of the cylinder, is electrically conductively and rigidly connected to one of the two arcing contacts via a base of the cylinder and bears the insulating nozzle.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: March 8, 2011
    Assignee: ABB Technology AG
    Inventors: Martin Kriegel, Markus Vestner, Olaf Hunger
  • Patent number: 7875822
    Abstract: A multiphase current interrupter is provided for interrupting a phase current between two contacts in an electrical phase. The current interrupter includes a first ablative chamber disposed around contacts for a first electrical phase. The first chamber has an ablative material thereon that causes a shock wave when an electrical arc is generated in an arc zone for the first electrical phase during a separation of the contacts therein. The current interrupter further includes at least a second ablative chamber disposed around contacts for at least a second electrical phase. The second chamber has an ablative material thereon that causes a shock wave when an electrical arc is generated in an arc zone for the second electrical phase during a separation of the contacts therein. An interconnecting structure provides fluid communication between the first ablative chamber and the second ablative chamber. The interconnecting structure is adapted to dissipate a shock wave generated in any of the ablative chambers.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: January 25, 2011
    Assignee: General Electric Company
    Inventors: Thangavelu Asokan, Sunil Srinivasa Murthy, Kunal Ravindra Goray, Nimish Kumar, Adnan Kutubuddin Bohori
  • Patent number: 7848084
    Abstract: A gas-insulated equipment such as a gas-insulated switchgear provided according to the invention can efficiently improve dielectric strength of an entire electrode system considering electric field distribution of the electrodes and conductors and improving insulation coordination so that miniaturization of the entire device can be achieved. The gas-insulated switchgear includes insulating gas sealed within an earth metal container and an insulating spacer insulating and supporting high-voltage receiving portions. Surfaces of shielding electrodes having a larger diameter than that of high-voltage conductors are covered with thick dielectric coatings, and surfaces of the high-voltage conductors are covered with thin dielectric coatings.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: December 7, 2010
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroyuki Hama, Hitoshi Sadakuni, Takuya Otsuka, Kiyoshi Inami, Eiichi Nagao
  • Patent number: 7816618
    Abstract: The invention secures superior performance by restraining carbon generation also when using as an arc extinguishing medium a gas comprising the element C and having a global warming potential lower than that of SF6 gas. A fixed contact section and a movable contact section are arranged opposite each other inside a sealed container filled with an insulating gas. A fixed arc contact and a movable arc contact are provided in the fixed contact section and the movable contact section. The insulating gas is a mixed gas of a gas comprising the element C, as the main constituent, and other gases. The presence of O2 gas in the mixed gas has the effect of restraining the amount of carbon generated. Adding H2 to the mixed gas has the effect of enhancing arc extinguishing performance, compensating for the diminished performance derived from not using actively the thermal energy of the arc.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: October 19, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Toshiyuki Uchii
  • Patent number: 7813109
    Abstract: Switchgear having a vacuum-insulated switchgear 2 comprising switches having at least breaking and disconnecting functions, each placed in a unit, and solid-insulated bus bars 12 for electrically connecting the switches in each unit; an air-insulated switchgear 1 comprising switches having at least breaking and disconnecting functions, each placed in a unit, and air-insulated bus bars for electrically connecting the switches in each unit; and_the vacuum-insulated switchgear 2 and the air-insulated switchgear 1 are installed side-by-side, wherein the vacuum-insulated switchgear 2 and the air-insulated switchgear 1 are electrically connected through flexible conductors 17 which are provided between the solid-insulated bus bars 12 and the air-insulated bus bars.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: October 12, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Shuichi Kikukawa, Kenji Tsuchiya, Yuko Kajiyama
  • Patent number: 7764486
    Abstract: A gas-insulated power apparatus comprising a vertically arranged gas-insulated circuit breaker included in a vertically arranged gas-insulated main tank, a first gas-insulated branch pipe connected to one side of an upper portion of the gas-insulated main tank substantially orthogonal to a direction of extending the gas-insulated main tank and leading out a feeder from a movable side of the gas-insulated circuit breaker, and a second and a third gas-insulated branch pipes which are respectively connected to both sides in a peripheral direction of a lower portion of the gas-insulated main tank substantially orthogonal to the direction of extending the gas-insulated main tank, one of which connects a fixed side of the gas-insulated circuit breaker to one gas-insulated Y bus of gas-insulated double buses and other of which connects the fixed side of the gas-insulated circuit breaker to other gas-insulated X bus of the gas-insulated double buses, respectively, by which a gas-insulated power apparatus having a str
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: July 27, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takuya Otsuka, Hitoshi Sadakuni, Daisuke Fujita
  • Patent number: 7754991
    Abstract: This electrical switchgear has an interrupting chamber enclosing an interrupting gas (G) substantially devoid of SF6 and of CF4, and a first arcing contact (10) and a second arcing contact (18), the two arcing contacts moving causes an electric arc (26) to strike, while at least one irradiation wall (22) is provided that is suitable for being reached by the electric arc. At least two component materials that are part of at least one element selected from the interrupting gas, the first and second arcing contacts, and the or each irradiation wall, are suitable for decomposing under the effect of the electric arc, so as to form decomposed species (e1, e2) suitable for combining in the interrupting chamber, in order to form at least one new gaseous species (G1), before the electric arc is extinguished, the dielectric properties of said at least one new gaseous species being superior to the dielectric properties of said interrupting gas (G).
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: July 13, 2010
    Assignee: Areva T&D SA
    Inventors: Jean-Luc Bessede, Oana Aitken
  • Patent number: 7742283
    Abstract: A gas-insulated equipment such as a gas-insulated switchgear provided according to the invention can efficiently improve dielectric strength of an entire electrode system considering electric field distribution of the electrodes and conductors and improving insulation coordination so that miniaturization of the entire device can be achieved. The gas-insulated switchgear includes insulating gas sealed within an earth metal container and an insulating spacer insulating and supporting high-voltage receiving portions. Surfaces of shielding electrodes having a larger diameter than that of high-voltage conductors are covered with thick dielectric coatings, and surfaces of the high-voltage conductors are covered with thin dielectric coatings.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: June 22, 2010
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroyuki Hama, Hitoshi Sadakuni, Takuya Otsuka, Kiyoshi Inami, Eiichi Nagao
  • Patent number: 7732727
    Abstract: The heavy-duty circuit-breaker with arc blowing has an element which is sensitive to hot gas and/or to gas pressure and is protected by means of a seal against a hot-gas flow. The seal is advantageously a movable non-contacting seal. The seal has a channel entrance for production of a partial hot-gas flow of the hot-gas flow and, connected downstream from this, a channel in order to reduce the mass flow of the partial hot-gas flow, and an expansion chamber in order to expand the volume of the partial hot-gas flow. The expansion chamber is a pressure-relief area. The element may, for example, be a guide element, a contact-making element or a sealing element.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: June 8, 2010
    Assignee: ABB Technology AG
    Inventors: David Saxl, Stephan Grob, Markus Vestner
  • Patent number: 7692113
    Abstract: The invention relates to a switch assembly comprising an essentially tubular enclosed housing. The tubular axis of the enclosed housing deviates from the horizontal and the vertical. The switch assembly comprises an interrupter unit, to which three main leads are connected.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: April 6, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventor: Manfred Meinherz
  • Patent number: 7679022
    Abstract: A vacuum insulated switchgear comprising a case having a switch section, a bus-bar section and a cable section, each being partitioned by an earthed metal plate, a vacuum double break three point switch disposed in the switch section and having breaking and disconnecting function, an operator, a bus-bar disposed in the bus-bar section of the case, and a cable connection terminal connected to a cable in the cable section.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: March 16, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Kenji Tsuchiya, Shuichi Kikukawa
  • Patent number: 7595461
    Abstract: The heavy-duty circuit-breaker having an axis (A), and having an arcing contact piece, a current-carrying element and an erosion protection element, with the arcing contact piece having an opening in order to carry an essentially axial flow of a gas which has been heated by an arc, and together with the current-carrying element forms a flat contact (F) in order to carry a short-circuit current (I) which flows through the arcing contact piece and the current-carrying element, and with the erosion protection element essentially shielding the current-carrying element from the flow close to the flat contact (F), is characterized in that the current-carrying element has an axial area in which a radial internal dimension (d2) of the current-carrying element increases in steps or continuously as the distance from the flat contact (F), measured parallel to the axis (A), increases.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: September 29, 2009
    Assignee: ABB Technology AG
    Inventors: David Saxl, Markus Vestner, Thomas Nordstrom, Tomas Borg, Tomas Strom
  • Patent number: 7580247
    Abstract: A load center system includes a primary bus bar with primary stabs for receiving a first type of circuit breaker, the primary stab extending from a primary base portion of the primary bus bar. A secondary bus bar with a secondary base portion and secondary stabs is coupled to the primary bus bar in a generally overlapping position, for receiving a second type of circuit breaker. Both the primary and secondary bus bars can be formed from stamping. By utilizing bus bars with base portions, the primary and secondary bus bars together provide for ease of assembly, and structural integrity, while allowing either of the first type of circuit breaker and the second type of circuit breaker to be coupled to the load center.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: August 25, 2009
    Inventors: Dave Pearson, William J. Broghammer