| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 218140000 | Operating mechanism structure or arrangement | 49 |
| 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 |
| 20090045171 | CIRCUIT BREAKER WITH HIGH SPEED MECHANICALLY-INTERLOCKED GROUNDING SWITCH - A circuit breaker apparatus with an integrated grounding switch has a housing with first and second bushings extending outwardly of the housing. A first vacuum bottle is positioned in the housing and has a pair of contactors therein. A second vacuum bottle is positioned in the housing and has a pair of contactors therein. A mechanical linkage is movable between a first position and a second position. The first position electrically connects the first bushing to the second bushing. The second position electrically connects the first bushing to ground. The first vacuum bottle and the second vacuum bottle are longitudinally aligned. The mechanical linkage is interposed between the first and second vacuum bottles. | 02-19-2009 |
| 20090078681 | VACUUM CIRCUIT INTERRUPTER GROUNDING ASSEMBLY - A vacuum circuit interrupter having a pole unit structure and an operating mechanism structured to move the vacuum circuit interrupter contacts between a first, closed position, wherein a movable contact is coupled to, and in electrical communication with, a fixed contact, and a second, open position wherein the movable contact is spaced from, and not in electrical communication with, the fixed contact, as well as being structured to rotate a housing assembly rotatable portion between a first position, wherein a rotatable terminal is coupled to, and in electrical communication with, a line terminal, and a second position, wherein the rotatable terminal is coupled to, and in electrical communication with, a grounded terminal. | 03-26-2009 |
| 20090084762 | Adjustable switching mechanism for series coupled vacuum interrupters - An adjustable switching mechanism for adjusting the tolerance of electrical contacts of series coupled vacuum interrupters includes a primary drawbar coupled to a secondary drawbar via a pair of coupling pull rods. The primary and secondary drawbars are adjustably attached to the coupling pull rods by a plurality of adjustable compression assemblies. The primary drawbar also includes an attachment bore having threads of one dimension to threadably receive a double-threaded part therethrough. The double-threaded part also includes an internal bore having threads of another dimension in which to receive a coupling screw. As such, the tolerance between the electrical contacts of the vacuum interrupters may be changed through adjustment of the compression assemblies and the rotation of the double-threaded part. | 04-02-2009 |
| 20090145883 | Method for Producing Contact Makers for Vacuum Switching Chambers - The invention relates to a method for producing contact makers for vacuum switching chambers, which are used in low-voltage, medium-high voltage, and high-voltage engineering, during which the contact makers are provided with slots extending from the middle area of the contact to the edge. The invention also relates to the contact maker itself. In order to improve a method for producing contact makers in vacuum switching chambers as well as a contact maker of the type in question so that the production method is distinctly less complicated, and the contact maker is sufficient for the highest functional demands, the invention provides that the contact makers are produced in a powder metallurgical process in which they are provided with near final contours and near final dimensions. During this process, said slots are already made in the green compact and are fixed during a subsequent sintering. | 06-11-2009 |
| 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 |
| 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 |
| 20090218319 | Vacuum Circuit Breaker - An object is to provide a vacuum circuit breaker that has a lower electrical and thermal resistance at contacting portions between a movable electrode-rod and a movable-electrode-side connection-terminal so that a continuous current-carrying capacity is made larger without reinforcement and/or enhancement of an operating mechanism. The vacuum circuit breaker herein provided includes a vacuum interrupter held inside an insulation frame; a fixed electrode-rod mounted on one side of the vacuum interrupter; a movable electrode-rod mounted on the other side of the vacuum interrupter; a flexible conductor for electrically connecting the movable electrode-rod with a main-circuit conductor; and a movable-electrode-side connection-terminal fastened on the outer circumference of said movable electrode-rod; wherein the flexible conductor is gripped by a first face and a second face of the movable-electrode-side connection-terminal. | 09-03-2009 |
| 20090230090 | VACUUM SWITCH - The present invention relates to a switch for initiating or interrupting current flow between two or more terminals. Preferably, the switch provides for two breaks in the circuit when the switch is in the open position, more specifically, by providing a gap between fixed and movable contacts within one or more vacuum bottles. The switch can also include a ground vacuum bottle for connecting one or more of the terminals to ground. Preferably, a visual indicator for the state of the switch is also provided. | 09-17-2009 |
| 20090302006 | MECHANICALLY INTERLOCKED TRANSFER SWITCH - A transfer switch apparatus has first, second, and third electrical terminals extending outwardly from a housing. A first vacuum bottle is positioned in the housing and has a pair of contactors therein. A second vacuum bottle is positioned in the housing and has a pair of contactors therein. A mechanical linkage is movable between a first position and a second position. The first position electrically connects the first electrical terminal to the second electrical terminal. The second position electrically connects the third electrical terminal to the second electrical terminal. The first vacuum bottle and the second vacuum bottle are longitudinally aligned. The mechanical linkage is interposed between the first and second vacuum bottles. | 12-10-2009 |
| 20100000972 | Vacuum Circuit Breaker - The invention relates to a vacuum switch, especially a vacuum circuit breaker, for medium and high voltages, comprising a mobile switch unit arranged inside a vacuum switch compartment ( | 01-07-2010 |
| 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 |
| 20100059480 | VACUUM CIRCUIT BREAKER - There is provided a vacuum circuit breaker including a vacuum valve, a first main circuit conductor fixed to a fixed current-carrying rod end of the vacuum valve, a polygonal movable conductor connected to a movable current-carrying rod end of the vacuum valve, an operation movable rod connected to the movable conductor in an axial direction and connected to an operation mechanism, a second main circuit conductor, through which the operation movable rod is movably inserted, and at least one extendable flexible conductor, which connects side surfaces of the movable conductor and the second main circuit conductor. | 03-11-2010 |
| 20100102034 | Apparatus for Monitoring Vacuum - A leak sensor for monitoring a vacuum in a vacuum interrupter has a deformable separating wall, particularly in the form of a membrane or a bellows. The separating wall is connected to a vacuum chamber of a vacuum interrupter through a measuring opening. When the vacuum chamber of the vacuum interrupter is aerated or vented, the membrane or bellows is deformed. That deformation is detectable by a mechanical indicator device, an optical device or an electro-optical device. | 04-29-2010 |
| 20100102035 | POWER LINE CURRENT INTERRUPTER HAVING A VACUUM SWITCH CHAMBER - This interrupter device includes a parallel branch ( | 04-29-2010 |
| 20100122967 | VACUUM SWITCHGEAR - A vacuum switchgear comprising:
| 05-20-2010 |
| 20100140225 | TULIP CONTACTING DEVICE FOR VACUUM CIRCUIT BREAKER - Disclosed is a tulip contacting device for a vacuum circuit breaker employed to quickly break off an electric power system, in which contact fingers are bidirectionally rotatable in a state of being restricted at an outer diameter portion of a mover holder, such that the flexibility of the contact fingers can be increased, whereby it is possible, upon connecting the vacuum circuit breaker to a case, to flexibly deal with the variation of axial angles of terminals inserted in both sides of the tulip contacting device, and also springs may be coupled to the contact fingers, respectively, so as to effectively prevent separation and overall destroy of the contact fingers from the mover holder during installation. | 06-10-2010 |
| 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 |
| 20110000887 | CONTACT FOR A MEDIUM-VOLTAGE VACUUM CIRCUIT-BREAKER WITH REINFORCED STRUCTURE, AND AN ASSOCIATED CIRCUIT-BREAKER OR VACUUM CIRCUIT-BREAKER, SUCH AS AN AC GENERATOR DISCONNECTOR CIRCUIT-BREAKER - A vacuum circuit-breaker wherein at least in one of the contacts at least one stud is used as a spacer, and is disposed between the mechanical connection portion and the circular plate of the contact body in such a manner as to avoid the collapse thereof during a closing operation of the vacuum circuit-breaker, and in the closed position the contacts can withstand very high compression forces, typically greater than 700 kg-force or 2 t-force. | 01-06-2011 |
| 20110006041 | CONTACT FOR A MEDIUM-VOLTAGE VACUUM CIRCUIT-BREAKER WITH IMPROVED ARC EXTINCTION, AND AN ASSOCIATED CIRCUIT-BREAKER OR VACUUM CIRCUIT-BREAKER, SUCH AS AN AC GENERATOR DISCONNECTOR CIRCUIT-BREAKER - A vacuum circuit-breaker wherein one contact body is made with two windings implanted concentric with one another and connected electrically in parallel. The second winding is in the form of an solid part with an annular ring. The circuit-breaker increases the axial magnetic field (AMF) and distributes it uniformly over the contact surface so that arc extinction is improved for high short-circuit currents, typically greater than 63 kA. | 01-13-2011 |
| 20110036812 | VACUUM CIRCUIT BREAKER - Vacuum circuit breakers are to gain an extended lifetime by reducing contact face damage of moving and fixed electrodes with improved voltage withstand performance therebetween and enhanced interruption performance. Vacuum circuit breaker of the present invention has bulb | 02-17-2011 |
| 20110056917 | CIRCUIT BREAKER WITH HIGH-SPEED MECHANICALLY INTERLOCKED IMPEDANCE GROUNDING SWITCH - A circuit breaker and impedance grounding switch having a first electrical terminal, a second electrical terminal, a third electrical terminal, a first vacuum bottle with a pair of contactors therein, a second vacuum bottle with a pair of contactors therein, and a mechanically interlocked linkage being electrically interconnected to the second electrical terminal and being movable between a first stable position and a second stable position. One of the pair of contactors of the first vacuum bottle is connected to the first electrical terminal. One the pair of contractors of the second vacuum bottle is electrically interconnected to the third electrical terminal. The linkage has a temporary position between the first and second stable positions electrically connecting simultaneously the first electrical terminal to the second electrical terminal and a third electrical terminal to the second electrical terminal. | 03-10-2011 |
| 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 |
| 20110155696 | VACUUM CIRCUIT BREAKER - Disclosed is a vacuum circuit breaker. A rotation link provided between a rotation shaft which transfers a rotation force of a driving force, and a moveable link which performs a linear motion by a rotation force of the rotation shaft is configured to receive a tensile force to be pulled to a direction of the rotation shaft when a driving unit performs a closing operation. This may prevent the moveable link from being buckled during a closing operation, and thus prevent lowering of the reliability due to deformation of sliding levers. | 06-30-2011 |
| 20110155697 | VACUUM CIRCUIT BREAKER - Disclosed is a vacuum circuit breaker. As a plurality of components of main circuit units are integrally formed as one module by molding using epoxy, the main circuit units are easily fabricated, and assembly errors are prevented. Since the main circuit units are arranged to be symmetrical to each other based on a driving unit, an insulation distance between a switchgear and the main circuit units can be obtained without increasing a size of the switchgear. This may allow the main circuit units to be easily arranged at the right side or at the left side according to an installation state of the switchgear. | 06-30-2011 |
| 20110220613 | ELECTRODE STRUCTURE FOR VACUUM CIRCUIT BREAKER - Contact plate | 09-15-2011 |
| 20110226740 | VACUUM SWITCH HAVING FIXED RAIL TERMINALS ON BOTH SIDES - The vacuum switch is compact, requires little effort, and provides a reliable current path having a high current-carrying capacity between the terminals of the vacuum switch, particularly at high switch-on speeds. The vacuum switch has a vacuum chamber, in which a vacuum is present and in which a switching contact is arranged. The switching contact includes a fixed contact piece firmly connected to the vacuum chamber and in electrical contact with a fixed contact terminal, and a moving contact piece movably guided relative to the fixed contact piece. The moving contact piece is at a distance to the fixed contact piece in a disconnect position and contacts the latter in a contact position. A drive unit produces a drive movement. A switching mechanism is connected to the drive unit and the moving contact piece and includes a conductor section that is electrically conducting up to the moving contact piece. A connector connects a moving contact terminal electrically to the moving contact piece in the contact position. The connector has a clamping contact, which has an insertion clamping contact piece connected to the conductor section of the switching mechanism and a mating clamping contact piece firmly connected to the vacuum chamber and electrically connected to the moving contact terminal. The insertion clamping contact piece and the mating clamping contact piece are arranged relative to each other such that the insertion clamping contact piece is clamped with the mating clamping contact piece in an electrically conducting manner as a result of the drive movement. | 09-22-2011 |
| 20110278263 | GAS-INSULATED HIGH-VOLTAGE SWITCH - A high-voltage switch includes a contact arrangement having two arcing contacts, one of which is supported displaceably against the action of a pretensioned spring. When the contact arrangement is closed, the free ends of the two arcing contacts are supported on one another. When the contact arrangement is opened, the two arcing contacts separate and during this process an arcing zone, accommodating compressed arc gas, is produced which is limited axially by free ends of the two arcing contacts and radially by an insulating nozzle toward the outside. To prevent the displaceably supported arcing contact from returning against the action of the pretensioned spring when a large short-circuit current is interrupted, the switch includes a piston/cylinder system functioning as a restoring device, which communicates with the arcing zone and which, with increasing pressure of the compressed arc gas produced in the arcing zone, generates a restoring force supporting the repelling force of the pretensioned spring. | 11-17-2011 |
| 20110315662 | ARCING FAULT AND ARC FLASH PROTECTION SYSTEM HAVING A HIGH-SPEED SWITCH - A high-speed arc terminator for an electrical power distribution system includes a sealed, evacuated housing, and a controllable mechanical switch having first and second electrically conductive contacts enclosed within the housing and adapted to be coupled to the power distribution system outside the housing. A trigger conductor extends into the housing and has an exposed end near the gap between the contacts when the contacts are in the open position. At least one of the contacts is movable between an open position in which the contacts are separated by a gap, and a closed position in which the contacts engage each other, and an operating mechanism is provided for moving the at least one contact between the open and closed positions. A high voltage source is controllably coupled to the trigger conductor for supplying a high-voltage pulse to the trigger conductor in response to the detection of an arcing fault. The high-voltage pulse produces an arc within the gap between the contacts, to shunt fault current from the power distribution system across the gap, from one of the contacts to the other, before the contacts engage each other. | 12-29-2011 |
| 20110315663 | MAGNETIC ACTUATOR CIRCUIT FOR HIGH-VOLTAGE SWITCHGEAR - A magnetic actuator circuit for high-voltage switchgear for a vacuum circuit breaker, including at least one permanent magnet and at least one coil connected in series with a transistor switch, and an electromechanical switch connected in series with the transistor switch and the coil. The first electromechanical switch and the transistor switch have an open default state, such that the electromechanical switch closes at an instant that precedes an instant of closing of the transistor switch, and such that it is returned to the open state once the transistor switch has returned to the open state. Such a magnetic actuator circuit may find application for putting a medium and/or high voltage apparatus into and out of circuit. | 12-29-2011 |
| 20120138574 | TANK TYPE VACUUM CIRCUIT BREAKER - A tank type vacuum circuit breaker uses a columnar or cylindrical insulation rod at a connection portion between an operating mechanism unit and a vacuum valve. The insulation rod is connected to the operating mechanism unit and the vacuum valve by rod-shaped pins. To prevent the insulation rod itself from falling, connection is made by shifting phases of the pins 90 degrees, respectively, each pin being connected to the operating mechanism unit and the vacuum valve. Accordingly, the falling of the insulation rod, the use of an insulation support tube and an insulation support for ensuring mechanical strength, are avoided. Further fastening of those supports by bolts or the like is not needed. Increases in the number of components, the size of the shape of assembly members around the insulation rod, and weight due to such increases, are prevented. | 06-07-2012 |
| 20120160810 | DEAD TANK VACUUM CIRCUIT BREAKER - A dead tank vacuum circuit breaker of the invention has an object to obtain a dead tank vacuum circuit breaker in which an immovable end of a vacuum valve is supported on a tank immovable side via an insulating support member and a support frame or the immovable end of the vacuum valve is supported on a tank movable side via an insulating support rod, so that an insulating support member supporting a movable end of the vacuum valve is omitted, while an opening portion is provided to the movable side of the tank and a bushing center conductor has a slidable connection portion that is axially expandable and contractible, so that a de-assembly range can be minimized when the vacuum valve is replaced. | 06-28-2012 |
| 20120175347 | Vacuum Switch With Pre-Insertion Contact - A vacuum switching device with pre-insertion contact arrangement is disclosed. The vacuum switch includes first and second contact systems. The first contact system includes an annular stationary contact and an annular moving contact retained on a moving contact drive rod. A second contact system includes a moving contact retained on an end of the moving contact drive rod and a floating contact retained along the same axis as the second moving contact. Both contact systems are enclosed in a vacuum envelope. A mechanical adjustment system is provided for the floating contact, which allows it to be positioned so that the secondary moving contact and floating moving contact may engage at a set interval before the annular moving contact engages the annular stationary contact. A resistor or inductor is connected between the second contact system and a load to prevent a current in-rush into the load. | 07-12-2012 |
| 20120187090 | Medium-Voltage Switchgear Device Comprising a Vacuum Cartridge - This current breaking device comprises, as operating mechanism of a vacuum cartridge branch-connected on a main circuit to a main movable contact, a rocker arm intercepting the main movable contact during opening or closing of the apparatus and rotating to open the vacuum cartridge while establishing an electric connection. This rocker arm is unitary and rigid and can rotate around two articulation points, one of which is active during opening operations and the other during closing operations, to then enable the rocker arm, which being unitary is more robust, to be retracted. | 07-26-2012 |
| 20120217223 | INTERLOCK APPARATUS FOR VACUUM CIRCUIT BREAKER - An interlock apparatus for a vacuum circuit breaker includes a pair of hindering units configured to allow or prevent a motion of a breaker body to an connection position or a disconnection position; a pair of first interlock bars configured to change a width of the breaker body to be greater than the predetermined spacing distance of the hindering units in a first position where the first interlock bars are spaced from each other, or to change the width of the breaker body to be smaller than the predetermined spacing distance; and a second interlock bar vertically movable to an up position and a down position, the up position for moving the first interlock bars to the first position, and the down position for returning the first interlock bars to the second position by being separated from the interposed position between the first interlock bars. | 08-30-2012 |
| 20130075368 | VACUUM SWITCHING APPARATUS INCLUDING FIRST AND SECOND MOVABLE CONTACT ASSEMBLIES, AND VACUUM ELECTRICAL SWITCHING APPARATUS INCLUDING THE SAME - A vacuum switching apparatus includes a vacuum envelope; a fixed contact assembly partially within the vacuum envelope; a first movable contact assembly partially within the vacuum envelope; a second movable contact assembly partially within the vacuum envelope; a first bellows within the vacuum envelope and cooperating with the first movable contact assembly to maintain a partial vacuum within the vacuum envelope; and a second bellows within the vacuum envelope and cooperating with the first movable contact assembly and the second movable contact assembly to maintain a partial vacuum within the vacuum envelope. | 03-28-2013 |
| 20130075369 | VACUUM SWITCH AND HYBRID SWITCH ASSEMBLY THEREFOR - A hybrid switch assembly is provided for a vacuum switch, such as for example a vacuum interrupter. The vacuum interrupter includes a vacuum envelope, a fixed contact assembly partially within the vacuum envelope, and a movable contact assembly partially within the vacuum envelope and movable between a closed position in electrical contact with the fixed contact assembly and an open position spaced apart from the fixed contact assembly. The hybrid switch assembly includes at least one radial magnetic field generating mechanism, such as for example a spiral contact or cup member, and a number of axial magnetic field generating mechanisms each comprising a ferromagnetic or ferrimagnetic member, such as for example, a horseshoe plate assembly. Each axial magnetic field generating mechanism is disposed within the vacuum envelope proximate a corresponding radial magnetic field generating mechanism. | 03-28-2013 |
| 20130213939 | VACUUM INTERRUPTER FOR A CIRCUIT BREAKER ARRANGEMENT - An exemplary vacuum interrupter for a circuit breaker arrangement including a cylindrically shaped insulating part, within which a pair of electrical contact parts are coaxially arranged and surrounded concentrically by the insulating part. The electrical contact parts can be configured to initiate a disconnection arc only between corresponding inner contact elements after starting a disconnection process, and corresponding outer contact elements can be configured to commutate the arc from the inner contact elements to the outer contact elements until the disconnection process is completed, wherein each inner electrical contact element is designed as a TMF-like contact element for generating mainly a transverse magnetic field, and each outer electrical contact element is designed as an AMF-like contact element for generating mainly an axial magnetic field. | 08-22-2013 |
| 20130264312 | METHOD OF MANUFACTURING A PUSH ROD OF A VACUUM INTERRUPTER - A method is disclosed of manufacturing a push rod for switching a vacuum interrupter by moulding the push rod with a plastic material. The push rod can include a core component configured for receiving a spring element. The push rod can also include a rod component which may include another second material, wherein a core component is embedded in the rod component to form the push rod. | 10-10-2013 |
| 20130284704 | VACUUM INTERRUPTER ARRANGEMENT FOR A CIRCUIT BREAKER - A vacuum interrupter arrangement for a circuit breaker includes a first cylindrical shaped vacuum insert within which a pair of corresponding electrical contacts is coaxially arranged. The electrical contacts include a fixed electrical contact which is attached to the first vacuum insert and an axially movable electrical contact which is operated by a pushrod. A second cylindrical shaped vacuum insert is coaxially arranged to the first cylindrical shaped vacuum insert. Both vacuum inserts are coaxially surrounded by an outer vacuum container in order to form a double contact gap version. | 10-31-2013 |
| 20130306601 | VACUUM ARC EXTINGUISHING CHANGE-OVER SELECTOR - 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. | 11-21-2013 |
| 20140360983 | STEPPING SWITCH WITH VACUUM SWITCHING TUBES - The invention relates to a stepping switch with vacuum switching tubes ( | 12-11-2014 |
| 20150021298 | SWITCHGEAR - Switchgear comprising: an air-insulated earthing disconnecting switch switchable among the closing position, disconnecting position, and earthing position; a vacuum interrupter electrically connected to the air-insulated earthing disconnecting switch; an operating device of the air-insulated earthing disconnecting switch having a motor; and an operating-force transmission unit transmitting driving force from the motor to a movable electrode of the air-insulated earthing disconnecting switch, wherein the operating-force transmission unit includes an operation rod fixedly coupled to the movable electrode, a shaft rotatably driven by the motor, a lever fixed to the shaft and making an arc motion with the shaft rotatably driven, a coupling pin coupling the lever and the operation rod, and limit switches detecting that the air-insulated earthing disconnecting switch is in the closing position, disconnecting position, or earthing position by means of the coupling pin driven by the operation of the rod operating with an arc motion of the lever. | 01-22-2015 |
| 20150027989 | ON-LOAD TAP CHANGER - The invention relates to an on-load tap changer for switching among different winding taps of a step transformer without interruption according to the preamble of the first patent claim. The general inventive concept lies in actuating both the selector contact unit and the switching means for uninterrupted load switching by means of a common motor drive without an energy store being connected therebetween. | 01-29-2015 |
| 20150034598 | STRUCTURE FOR PREVENTING ECCENTRICITY OF MOVABLE CONTACT IN VACCUM CIRCUIT BREAKER - The present invention relates to a vacuum circuit breaker, and more particularly, to a structure for preventing the eccentricity of a movable contact in a vacuum circuit breaker, wherein the concentricity of a fixed contact and the movable contact is maintained by preventing the eccentricity of and maintaining the straightness of the movable contact when the vacuum circuit breaker opens/closes so as to improve sealing performance and to prevent the increase in temperature. The present invention provides the structure for preventing eccentricity of a movable contact in a vacuum circuit breaker, including a housing which comprises an upper terminal installed at an upper portion thereof, a lower terminal installed at a lower portion thereof, and a vacuum interrupter installed therein; a terminal part which comprises a fixed contact and the movable contact disposed in the vacuum interrupter to be contacted with and separated from each other; a rod part including a connecting rod which is connected to the movable contact to move the movable contact in the vacuum interrupter, and passed through the lower terminal to be connected with the movable contact; and a stretchable terminal which is contacted and electrically connected with the lower terminal and the connecting rod, and contacted with the connecting rod to enclose a side surface of the connecting rod. | 02-05-2015 |
| 20150114933 | PUSHROD ASSEMBLY FOR A MEDIUM VOLTAGE VACUUM CIRCUIT BREAKER - A pushrod assembly for a medium voltage vacuum circuit breaker and vacuum circuit breaker are disclosed. The pushrod assembly can include a pushrod with an insulating body, whereby an electrical conducting terminal is arranged on a first abutting face of the insulating body and a guiding means is arranged on an opposing side of the electrical conducting terminal on a second abutting face of the insulating body for mechanically connecting the pushrod with an electromagnetic actuator. The pushrod can be integrated in the electromagnetic actuator and thus can be part of the electromagnetic actuator. | 04-30-2015 |
| 20150303010 | A VACUUM INTERRUPTER AND A VACUUM CIRCUIT BREAKER HAVING THE SAME - In the present invention a vacuum interrupter is provided, comprising: a housing; a fixed contact received in the housing; a movable contact received in the housing and configured to be movable to engage with or disengage from the fixed contact; a conductive seat fixedly mounted in the housing and configured to maintain an electrical connection with the movable contact; a flexible electrical connection feature received in the housing for connecting the movable contact with the conductive seat; and an operating mechanism for actuating the movement of the movable contact. In the present invention a vacuum circuit breaker having the above-mentioned vacuum interrupter is also provided. | 10-22-2015 |
| 20150311009 | TRIP LATCH ASSEMBLIES FOR CIRCUIT BREAKERS AND RELATED CIRCUIT BREAKERS - Circuit breakers that include and/or a trip latch assembly that is configured to maintain open and closed energy status of the breaker. The trip latch assembly can include: a first stop cam held on a cam shaft; a second stop cam held on the cam shaft axially spaced apart from the first stop cam; a drive cam held on the cam shaft; a trip-open latch held on a trip latch shaft, (typically above) in cooperating alignment with the first stop cam; a trip-close latch held on the trip latch shaft above and in cooperating alignment with the second stop cam; a follower residing below and in communication with the drive cam; and a linkage attached to the follower and to a main shaft to open and close the breaker responsive to the position of the drive cam. | 10-29-2015 |
| 20170236663 | BYPASS SWITCH | 08-17-2017 |
