Patent application number | Description | Published |
20080274003 | Electrode, electrical contact and method of manufacturing the same - An electrical contact comprising a matrix of an alloy of a high electro-conductive metal and a low melting point metal and particles of a refractory metal dispersed in the matrix. The electrical contact comprises the alloy containing a low melting point metal of at least one of Sn, Te and Be, and the refractory metal is Cr. The alloy comprising the low melting point metal in an amount of 0.5 to 3% by weight and the balance being Cu. | 11-06-2008 |
20080308531 | VACUUM INSULATED SWITCHGEAR - A vacuum insulated switchgear comprising a vacuum container accommodating at least a pair of movable contacts and a pair of fixed contacts, wherein the movable contacts are capable of taking three positions, the switchgear being a double-break three-position type switch having breaking and disconnecting functions. | 12-18-2008 |
20080308532 | Vacuum insulated switchgear - A vacuum insulated switchgear comprising a vacuum container accommodating at least a pair of movable contacts and a pair of fixed contacts, wherein the movable contacts are capable of taking three positions, the switchgear being a double-break three-position type switch having breaking and disconnecting functions. | 12-18-2008 |
20090020507 | VACUUM INSULATED SWITCHGEAR - A vacuum insulated switchgear has a busbar compartment, in which phase-segregated double-break, three-position vacuum circuit breakers are disposed; and feeder compartments disposed at both sides of the busbar compartment respectively, in each of which phase-segregated double-break, three-position vacuum circuit breakers are disposed. The busbar compartment and the feeder compartments are aligned in a row, and a second-phase insulated busbar is provided to connect one of the fixed contacts of a second-phase breaker in the busbar compartment to a fixed contact of a second-phase breaker in one of the feeder compartments A first-phase insulated busbar is provided to connect one of the fixed contacts of a first-phase breaker in the busbar compartment to a fixed contact of a first-phase breaker in one of the feeder compartments adjacent to the busbar compartment, and the second-phase insulated busbar and the first-phase insulated busbar are disposed in different positions in height. | 01-22-2009 |
20090032500 | VACUUM INSULATED SWITCH AND VACUUM INSULATED SWITCHGEAR - The vacuum insulated switch includes a vacuum container; two stationary contacts contained in the vacuum container; two movable contacts contained in the vacuum container, each capable of contacting and separating from a corresponding one of the stationary contacts; a vacuum insulated actuating rod connected to the two movable contacts; an operating rod connected to the vacuum insulated actuating rod via a metal bellows; and a guide for guiding the operating rod. The vacuum insulated switch has an off-axis displacement allowing structure which is provided between the guide and the operating rod for allowing the off-axis displacement of the operating rod. | 02-05-2009 |
20090159568 | VACUUM INSULATED SWITCHGEAR - A vacuum insulated switchgear having a vacuum container, a fixed contact disposed in the vacuum container, a movable contact disposed in the vacuum container capable of being in contact with or out of contact with the fixed contact, a driving mechanism for driving the movable contact in directions to contact with and out of contact with the fixed contact, a resin portion molded around the vacuum container, an insulative bushing for covering a pulled-out portion of a conductor connected to the fixed contact and for extending from the molded resin portion, and a cable head insulating member for covering a conductor of a cable head connected to the conductor at the pulled-out portion and an outer surface of the cable head insulating member being earthed, characterized in that:
| 06-25-2009 |
20090159569 | SWITCHGEAR - A switchgear case is partitioned into a high voltage bus bar chamber, which contains bus bars and cable heads, a high voltage device chamber containing circuit breakers and operation mechanisms and a low voltage control chamber containing a relay and measurement devices, etc., A rear wall of the case has a first suction port disposed at a lower part thereof, wherein the high voltage bus bar chamber, high voltage device chamber and the low voltage control chamber are communicated and air passing through the chambers is discharged from a first discharging port of the casing. The bus bars electrically connecting the high voltage devices in the high voltage device chamber and connecting bars connecting the adjoining bus bars and the cable heads are covered with solid insulators for solid-insulation. | 06-25-2009 |
20090173719 | VACUUM SWITCHGEAR - 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,
| 07-09-2009 |
20090237869 | SWITCHGEAR - Switchgear having a vacuum-insulated switchgear | 09-24-2009 |
20100000973 | VACUUM SWITCH AND VACUUM SWITCHGEAR - A vacuum switch having a fixed electrode, a movable electrode facing the fixed electrode, an insulating cylinder, end plates covering both axial ends of the insulating cylinder, a vacuum chamber internally accommodating the fixed electrode and the movable electrode, and a solid isolation resin molded on the outside of the vacuum chamber, characterized in that,
| 01-07-2010 |
20100002363 | SOLID INSULATED BUS SWITCHGEAR - A solid insulated bus switchgear, comprising: a cabinet having unit rooms defined by a ground metal plate on a front side thereof and a bus room defined by a ground metal plate on a rear side thereof; a first switching unit and a second switching unit, each of which has a circuit breaker, a current transformer, a zero-phase sequence current transformer, and an instrument voltage transformer, the first switching unit and the second switching unit being vertically stacked in the cabinet; main buses, which are solid-insulated, placed in the bus room in the cabinet in the width direction of the cabinet; a communication bus, which is solid-insulated, linked to the main buses, and connected to one end of the first switching unit at one end and to one end of the second switching unit at another end; and a first leader bus and a second leader bus, which are solid-insulated, the first leader bus being connected to another end of the first switching unit, the second leader bus being connected to another end of the second switching unit; wherein each of the first switching unit and the second switching unit has a movable cart, the circuit breaker mounted on the cart, and a frame assembly, to which the current transformer, the zero-phase sequence current transformer, and the instrument voltage transformer are attached, and standing on the cart to cover the outer circumferences of three planes (front and both sides) of the circuit breaker; and two terminals are vertically disposed upside or downside on the back of the circuit breaker, one being connected to a fixed electrode of the circuit breaker and the other being connected to a movable electrode of the circuit breaker, the two terminals being connected to the communication bus and to the first leader bus or second leader bus through air bushings provided on the cabinet so as to move away from and toward the communication bus and the first leader bus or the second leader bus. | 01-07-2010 |
20100025376 | VACUUM INSULATED SWITCH-GEAR AND ITS HEIGHT ADJUSTING METHOD - The vacuum insulated switch-gear is configured to be capable of being lifted up with a jack-up bolt to adjust a seated height of the vacuum insulated switch-gear. The switch-gear comprises a nut fixed on a base plate forming a bottom of the vacuum insulated switch-gear. The nut is used as a mating component with the jack-up bolt. | 02-04-2010 |
20100038343 | VACUUM SWITCH - A vacuum switch means a unit switch section comprising a pair of vacuum main circuit switches, an earth switch, operating rods for operating movable conductors of the main circuit vacuum switch and earth switch, and a molding case covering the main circuit switch, earth switch and the operating rods, wherein the operating rods are connectable with an operating mechanism, and the fixed conductors of the main circuit switch and earth switch are connected with bushing conductors. The main circuit vacuum switches are disposed in separate vacuum chambers. The movable conductors of the main circuit switches and electrically connected to each other via a transition conductor, and the movable conductors are operated synchronously by means of a transition rod connected to the transition conductor. | 02-18-2010 |
20100122967 | VACUUM SWITCHGEAR - A vacuum switchgear comprising:
| 05-20-2010 |
20100147112 | ELECTRODE, ELECTRICAL CONTACT AND METHOD OF MANUFACTURING THE SAME - An electrical contact comprising a matrix of an alloy of a high electro-conductive metal and a low melting point metal and particles of a refractory metal dispersed in the matrix. The electrical contact comprises the alloy containing a low melting point metal of at least one of Sn, Te and Be, and the refractory metal is Cr. The alloy comprising the low melting point metal in an amount of 0.5 to 3% by weight and the balance being Cu. | 06-17-2010 |
20100170874 | VACUUM INSULATED SWITCHGEAR - A vacuum insulated switchgear comprising a vacuum container accommodating at least a pair of movable contacts and a pair of fixed contacts, wherein the movable contacts are capable of taking three positions, the switchgear being a double-break three-position type switch having breaking and disconnecting functions. | 07-08-2010 |
20100195273 | VACUUM INSULATED SWITCHGEAR - A vacuum insulated switchgear is arranged as a panel for a power substation with the other or the others in parallel rows. the vacuum insulated switchgear comprises a housing with a switch section, a bus section, a cable section, and a control section which are partitioned by earthed metal plates respectively. The vacuum insulated switchgear comprises: a connection member provided in each bus connecting part in the bus section of the each panel and enabling each bus to be connected and disconnected; and a bus recovery member which is detachably connected between the connection members of faultless panels adjacent to a faulty panel when the faulty panel occurred. | 08-05-2010 |
20100208416 | EARTHING EQUIPMENT FOR SWITCHGEAR - Arthing equipment for a switchgear is comprised of a movable carrying cart, a switch portion, a manipulating portion, and a voltage detecting device. The earthing equipment is provided with: an upper conductor connected to any one of the movable electrode and the stationary electrode; a lower conductor connected to the other of the movable electrode and the stationary electrode, an earthing wire connecting the lower conductor to a terminal used for earthing of the switchgear; and an adaptor conductor being selectively connected to either a disconnection portion at a bus bar side or a disconnection portion at a cable side of the switchgear and is permitted to be selectively replaced on either upper or lower face of the upper conductor. | 08-19-2010 |
20100243611 | VACUUM INSULATING SWITCH GEAR - A vacuum insulating switch gear formed by integrally molding with epoxy resin of a vacuum double-break three-position type switch including a movable contact, a fixed contact, and a vacuum container composed of an insulating cylinder for covering the movable contact and the fixed contact, a lower lid for closing a lower part of the insulating cylinder, and an upper lid for closing an upper part of the insulating cylinder and an operation rod side of the movable contact, and an earthing switch with a vacuum closed container, comprising
| 09-30-2010 |
20100314357 | RESIN-MOLDED VACUUM VALVE - A resin-molded vacuum valve has an internally hermetically sealed vacuum vessel, a fixed axis having a fixed electrode at one end thereof, and a movable axis having a movable electrode at one end thereof and facing the fixed axis in the vacuum vessel. The fixed and movable electrodes are fixedly and movably attached, respectively, to respective ends of the vacuum vessel with a contact therebetween. Further, a conductor connected to the fixed axis extends from a pull-out opening. First, second, and third electric field concentration alleviating shields are disposed near the fixed axis, near the movable axis, and near the pull-out opening, respectively. Buffer layers cover the outer peripheries of the vacuum valve and the conductor, and a resin insulator allows the movable axis to be movable, and buries and fixes the fixed axis, the vacuum vessel, the conductor, the buffer layers, and the electric field concentration alleviating shields. | 12-16-2010 |
20110036811 | Switchgear and Method for Operating Switchgear - A switchgear includes an earthing and disconnecting switch which linearly moves and is switchable to a disconnecting and an earthing positions, a vacuum valve which performs closing and breaking of a current in a vacuum container producing vacuum inside, and a solid insulator with which the earthing and disconnecting switch and the vacuum valve are covered, therein the earthing and disconnecting switch and the vacuum valve are electrically connected, and closing and breaking of a current is performed in the vacuum valve. | 02-17-2011 |
20110058311 | VACUUM INSULATED SWITCHGEAR - The vacuum insulated switchgear includes a housing enclosing a control compartment, a switch compartment, and a busbar compartment, each of the three compartments being partitioned by a metallic earthing plate; a first busbar and second busbar extended from an adjacent panel, in the busbar compartment; and a first busbar-connecting bushing and second busbar-connecting bushing making the first and second busbars connectible/disconnectible; a double-breaking three position vacuum switch, two sets of earthing switches, the first busbar-connecting bushing, and the second busbar-connecting bushing being integrally molded to form a switch provided on an electrical phase-by phase basis independently, wherein the switches for three phases are arranged in order side by side in the housing. | 03-10-2011 |
20110062117 | VACUUM INSULATED SWITCHGEAR - A vacuum insulated switchgear comprising a vacuum container accommodating at least a pair of movable contacts and a pair of fixed contacts, wherein the movable contacts are capable of taking three positions, the switchgear being a double-break three-position type switch having breaking and disconnecting functions. | 03-17-2011 |
20110073567 | Electrode for Switch and Vacuum Switch, and Method of Manufacturing Electrode for Switch or Vacuum Switch - An object of the invention is to provide a vacuum switch which can achieve a reduction of an electric loss and an improvement of a heat transmission performance by preventing an air gap portion from being generated between an electrode and a conductor rod and preventing the electrode and the conductor rod from generating any positional displacement. An electrode for a switch in accordance with the invention is provided with the conductor rod, a contact point electrode inserted to the conductor rod, and a coupling plate fixing both the elements to an outer side in a diametrical direction of the conductor rod and the contact point electrode, thereby fixing both the elements. | 03-31-2011 |
20120044616 | SWITCHGEAR - A switchgear includes a chassis which is partitioned by metal earthed plates and includes a bus bar section located at a central portion, a switch section located below the bus bar section, a cable section located at a rear surface side, and a control section located at a front surface side; an air-insulated earthed disconnecting switch provided in the switch section; and a manipulating device. The switch section is separable from the chassis, and is configured as a case having a semi-closed structure which allows air to pass therethrough but prevents particles of oil and water from passing therethrough. | 02-23-2012 |
20120132622 | SWITCH UNIT AND SWITCHGEAR EQUIPPED THEREWITH - In order to improve cooling performance of a switch unit or switchgear equipped with the switch unit, the switch unit includes a switch having a movable electrode and a fixed electrode and is casted as one body with a resin, the resin is provided with resin fins, and the thickness of the resin fin is changed so that the resin fin has a thickness sloped in the longitudinal direction of the resin fin. | 05-31-2012 |
20120152716 | SWITCHGEAR - It is an object to provide a switchgear capable of alleviating burden to a manager. In order to solve the aforementioned problem, the switchgear according to the present invention includes a plurality of compatible switch units each provided in a housing and closing/interrupting/ground functions so that the plurality of switch units are connected to supply power to the load side. | 06-21-2012 |
20120276755 | Grease for Electrical Contact and Slide Electricity Structure, Power Switch, Vacuum Circuit Breaker, Vacuum-Insulated Switchgear, and Vacuum-Insulated Switchgear Assembling Method - A slide electricity structure according to the present invention uses grease for electrical contacts wherein contact resistance does not gradually increase even when exposed to sliding and lifetime is long, and has a silver-plated spring contact that contacts or separates by way of sliding and grease for electrical contacts that has been applied to the spring contact and contains perfluoropolyether oil having an average molecular weight between 2600 and 12500 as a base oil and PTFE having a primary particle diameter of 1 μm or less as a thickener. | 11-01-2012 |
20130001200 | Vacuum Valve and Switchgear Equipped with Said Vacuum Valve - The object of the present invention is to provide a vacuum valve with strength against buckling deformation and without pressure leakage. | 01-03-2013 |