| ABB TECHNOLOGY AG Patent applications |
| Patent application number | Title | Published |
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| 20120131122 | DATA TRASMISSION DEVICE FOR REMOTE MONITORING AND REMOTE CONTROLLING IN A DISTRIBUTED PROCESS SYSTEM - A data transmission device remotely monitors and controls a distributed process system, which exchanges data with a superordinate communication unit via an interface and a communication connection in accordance with the IEC 61850 standard, and which is connected to a subordinate process via a further interface and a station bus. The data transmission device includes functional units integrated therein which are implemented as interfaces for connecting the process to at least one superordinate communication unit in accordance with the IEC 61850 standard. | 05-24-2012 |
| 20120125112 | PRESSURE TRANSMITTER - A pressure transmitter includes a sensor assembly having a hollow body housing a pressure sensor. The pressure transmitter also includes a support body which is made of a first material, and an interface body which is connected to the support body and which is made of a second material different from the first material. A first isolation diaphragm is fixed onto the interface body and is made of the same material of the interface body. The first isolation diaphragm is in fluid communication with the pressure sensor and is configured for interfacing with a process fluid. | 05-24-2012 |
| 20120120560 | METAL-ENCAPSULATED, POLYPHASE, GAS-INSULATED BUSBAR SWITCH DISCONNECTOR AND EARTHING SWITCH - Exemplary embodiments are directed to a metal-encapsulated, polyphase busbar switch disconnector and earthing switch, including a housing which, on each of opposite sides has three flanges that lie on a plane. Each flange being connected to one busbar and, on a third side, a flange is connected to a circuit breaker. The circuit breaker having conductor elements arranged in an interior of the housing. First conductor elements are connected to the busbars, and second conductor elements are connected to circuit breaker poles. The second conductor elements are aligned at right angles to the first conductor elements, which connect the busbars to one another, such that the first conductor elements are substantially U-shaped and are passed around the second conductor elements. A switch disconnector and earthing switch contact arrangement is provided between an inner housing wall and the first and second conductor elements. | 05-17-2012 |
| 20120119901 | ALARM MANAGEMENT SYSTEM - An exemplary alarm management system and method for the management of alarm messages of a technical installation or of a technical process are disclosed. A data processing system receives alarm messages. A plurality of display modules display the alarm messages. The data processing system includes a module for creating alarm channels for different ways of representing the pending alarm messages. Each alarm channel created by the module is associated with one of the display modules, and the display modules present the pending alarm messages as ate least one of lists, alarm clouds, and displays in conjunction with at least one of acoustic signals and alarm records. | 05-17-2012 |
| 20120119870 | METHOD FOR PRODUCING A DISK WINDING AND DISK WINDING - An method for producing a disk winding having disks arranged alongside one another, includes winding the disk winding and fitting intermediate insulation between adjacent disks simultaneously, and subdividing the insulation into two sub-areas with a connecting conductor that runs from an end of one disk to a start of an adjacent disk along a diagonal within the intermediate insulation. The sub-areas can include a first intermediate area with a triangular cross-section formed below this diagonal and a second intermediate area which has an opposite triangular cross-section and formed above this diagonal. | 05-17-2012 |
| 20120119856 | MULTI-PHASE MEDIUM VOLTAGE CONTACTOR - A multi-phase Medium Voltage Contactor ( | 05-17-2012 |
| 20120113568 | SWITCHGEAR ASSEMBLY MODULE AND SWITCHGEAR ASSEMBLY - A switchgear assembly module has a housing, which forms a common gas space for accommodating an insulating gas for the switchgear assembly module. The switchgear assembly module includes a busbar conductor arrangement having three busbar conductor sections, which are accommodated in the common gas space, an outgoing conductor connection group with three outgoing conductor openings and with three outgoing conductor sections, which extend from within the housing towards a respective one of the outgoing conductor openings, and three switch disconnectors, which each connect a respective one of the busbar conductor sections to a respective one of the outgoing conductor sections via a disconnection point. The disconnection point of a first one of the switch disconnectors is arranged on a first side of an outgoing normal plane and the disconnection point of a second one of the switch disconnectors is arranged on a second side of the outgoing normal plane. | 05-10-2012 |
| 20120107041 | MECHANICAL LATCHING UNIT FOR A MAIN DRIVE UNIT - A mechanical latching unit for a main drive unit includes a rolling mechanical switch within a housing, with a main roller, a counter roller, a carriage and a carriage trip/locking lever, with a first joint created between the main roller and the first end of the carriage, where by the load of the traction link of the main drive unit carried out to the main roller distributes a primary force component carried out to the counter roller and a secondary force component carried out in a direction to a second end of the carriage, where by the mechanical latching unit includes a force reduction mechanism having at least two force reduction stages, a carrier reset spring fastened to the housing which resets the carriage back to a neutral respectively blocking position, and a lever reset spring which resets the carriage trip/locking lever back to a neutral respectively blocking position. | 05-03-2012 |
| 20120106087 | BASE PLATE - The present disclosure relates to a base plate, for example, for a power module, including a matrix formed of metal, for example, aluminium, wherein at least two reinforcements are provided in the matrix next to each other, and wherein the reinforcements are spaced apart from each other. | 05-03-2012 |
| 20120103771 | MANUAL TRIPPING DEVICE FOR CIRCUIT BREAKER - A permanently installed manual trip mechanism is mounted internally to a circuit breaker with a user operated handle extending to the outside of the enclosure. The mechanism converts a relatively small operator input to larger spring charge. Upon triggering, the mechanism provides the required operating velocity of the circuit breaker during the opening stroke for load break operation. | 05-03-2012 |
| 20120099273 | COOLING OF ELECTRICAL COMPONENTS - The invention concerns a converter as well as a cooling device and a method for cooling at least a first and a second group of electrically interconnected electrical components (SWA | 04-26-2012 |
| 20120096302 | FIELD DEVICE HAVING A REAL TIME CLOCK - A field device includes a real time clock, and at least one communication interface for at least unidirectionally, receiving and transmitting data. The real time clock is detachably connected to the at least one receiving communication interface of the field device, and includes a power supply. | 04-19-2012 |
| 20120092118 | HOLDER FOR HIGH-VOLTAGE END LEADS IN OIL TRANSFORMERS - A holder is provided for high-voltage end leads in oil transformers. The holder includes a plate-like, elongated basic insulation module which has two planar outer sides and a connecting device at its first end and an accommodating device for a transversely running a screen tube in the region of its second end. The basic insulation module is angled between the first end and the second end, such that a shorter side edge and an opposite longer side edge is formed. A plurality of adjacent slots are provided transversely to the elongated extent of the basic insulation module, where the slots encircle the latter at its planar outer sides and at the shorter side edge in a respective plane. At least one U-shaped insulation plate is fitted into one of the slots in a positive-locking manner. | 04-19-2012 |
| 20120092113 | OIL TRANSFORMER INSULATION MODULE - An oil transformer insulation module includes a plurality of disc-like insulation elements of identical type which are arranged flush one above another along a line, connected to one another and have in each case at least a similar outline contour. An insulation element includes a first flat layer and a second layer adjacent and predominantly parallel thereto. The first and second layers are composed of a mechanically strong, planar first insulation material. The first and second layers of the first insulation material are connected to and spaced apart from a third, corrugated layer arranged between the first and second layers and composed of a mechanically strong, planar second insulation material. The third layer has lateral edges and is corrugated in such a way that all the cavities formed by the corrugated form can be completely flooded with a liquid via the lateral edges of the insulation element. | 04-19-2012 |
| 20120092110 | OIL TRANSFORMER INSULATION MODULE - An exemplary oil transformer insulation module includes at least a first flat layer and a second layer adjacent and substantially and parallel to the first layer. The first and second layers include planar first insulation material and are connected to and spaced apart from a third corrugated layer that is arranged between the first and second layers. The third layer includes planar second insulation material, has lateral edges, and is corrugated such that all the cavities formed by the corrugated form can be flooded with a liquid via the lateral edges. | 04-19-2012 |
| 20120092109 | TRANSFORMER COIL AND TRANSFORMER WITH PASSIVE COOLING - The disclosure relates to a transformer coil which can be cooled by a heat pipe and has a primary winding and a secondary winding and relates to a transformer which is formed from transformer coils which can be cooled in this way. The heat from the transformer coil is dissipated by the heat pipe. The evaporator of the heat pipe is arranged in the area of the windings and forms at least one extensive evaporator segment, which extends in the circumferential direction of the windings and along the winding axis of the transformer coil and in the process covers a multiplicity of the turns of the secondary winding. | 04-19-2012 |
| 20120092029 | SENSOR ARRANGEMENT FOR CONTACTLESS DETERMINATION OF THE INSTANTANEOUS ANGULAR POSITION OF A SHAFT - An exemplary sensor arrangement is disclosed for contactless determination of the instantaneous angular position of a shaft which has a transmitter, which is arranged thereon such that they rotate together and interacts with at least one pick-up, which is installed in a fixed position with respect thereto, for determining the angular position of the shaft. The fixed-position pick-up is formed by a first and a second circular disk, which are aligned plane-parallel with respect to one another and each have a central hole for guiding the shaft. The first disk is subdivided into four equal circular segments which are in the form of mutually isolated electrodes. The second disk is in the form of an opposing electrode with respect to the first disk. The transmitter is arranged as a solid dielectric, which is in the form of a disk, between the two disks and essentially has the form of a semicircle which is rigidly connected to the shaft. | 04-19-2012 |
| 20120092002 | SENSOR ARRANGEMENT FOR DETERMINING THE CURRENT ROTATION ANGLE POSITION OF A SHAFT - A sensor arrangement is provided for determining the current rotation angle position of a shaft with respect to a stationary reference point. In order to determine the rotation angle position without wear and tear and with little outlay on materials and little energy requirement during ongoing operation, the coil is arranged between the shaft and a stationary reference point in such a manner that at least one geometrical property of the coil can be changed over the range of rotation angle positions of the shaft. The changed geometrical property of the coil is used to determine the rotation angle position of the shaft. | 04-19-2012 |
| 20120091809 | FIELD DEVICE FOR A PROCESS AUTOMATION SYSTEM HAVING AN INTRINSICALLY SAFE POWER SUPPLY DEVICE - The disclosure relates to a field device of a process automation system, having at least one first intrinsically safe power supply unit, which provides locally stored electrical energy in an integrated storage element for supplying power to an electronics unit for process control. | 04-19-2012 |
| 20120090891 | SPHERICAL CAP FOR HIGH-VOLTAGE OUTGOING LINES IN OIL TRANSFORMERS - The disclosure relates to a spherical cap for a high-voltage outgoing line, including an electrically conductive element, which is arranged hollow-cylindrically about a rotational axis and which merges into a hemispherical form at its first axial end. A connection device has a passage opening for electrically and mechanically connecting the element, to an electrical screening pipe. At least two insulation barriers are spaced apart from one another and respectively adapted to the form of the hollow-cylindrical element and enclose the latter at a respective first and second distance. The insulation barriers respectively have a pipe attachment connector for leading through a screening pipe to the connection device. The first insulation barrier is spaced apart from the second insulation barrier by at least one insulation ring which is arranged about the rotational axis and which has a radially fashioned corrugated form. | 04-19-2012 |
| 20120090889 | SPHERICAL CAP FOR HIGH-VOLTAGE OUTGOING LINES IN OIL TRANSFORMERS - The disclosure relates to a spherical cap for a high-voltage outgoing line, including an electrically conductive element, which is arranged hollow-cylindrically about a rotational axis and which merges into a hemispherical form at its first axial end. A connection device has a passage opening for electrically and mechanically connecting the element, to an electrical screening pipe. At least two insulation barriers are spaced apart from one another and respectively adapted to the form of the hollow-cylindrical element and enclose the latter at a respective first and second distance. The insulation barriers respectively have a pipe attachment connector for leading through a screening pipe to the connection device. The connection device has a first part for connection to a screening pipe and a second part connected to the conductive element and a connection adjustable in a force-locking manner is provided between the first and second parts. | 04-19-2012 |
| 20120090772 | MOLD FOR PRODUCING HOLLOW-CYLINDER-LIKE MOLDED PARTS - Exemplary embodiments are directed to a mold for producing hollow-cylinder-type molded parts, having an external mold portion, that determines an inner cavity of a molded part to be manufactured. The external mold portion has a first cylindrical mold, which extends in a rotationally symmetrical manner about a first axis, and a hemispherical mold having a diameter equal to a diameter of the first cylindrical mold directly adjoins one of the two ends of the cylindrical mold along the first axis, wherein a second cylindrical mold adjoins the hemispherical mold in radial alignment. The hemispherical mold has a spherical cap, the second cylindrical mold is rotatable together with the spherical cap about a second axis which is arranged at an angle with respect to the first axis, and the second cylindrical mold is arranged concentrically with respect to the second rotational axis. | 04-19-2012 |
| 20120075047 | TRANSFORMER CORE - A transformer core for a power transformer, and a power transformer including such a transformer core are provided. The transformer core includes at least two transformer core laminations which are arranged in parallel and are at least approximately congruently adjacent to each other. The transformer core laminations have a similar outline. At least one through-hole is arranged in the outline in each case. The transformer core laminations are comprised of at least predominantly an amorphous ferromagnetic material. At least one cooling channel is arranged between the transformer core laminations. | 03-29-2012 |
| 20120074210 | SOLDERING PREFORM - A soldering preform for soldering in a reducing atmosphere is substantially disc-shaped and has two soldering surfaces each for being in contact with an object to be soldered, respectively, and with at least one recess on at least one soldering surfaces for constituting a channel open to a surface of the object. | 03-29-2012 |
| 20120071014 | PLUG-IN BUSHING AND HIGH-VOLTAGE INSTALLATION HAVING A BUSHING SUCH AS THIS - An exemplary plug-in high-voltage bushing connects an electrical conductor to a metal-encapsulated component, which is filled with insulating agent, of a high-voltage installation. The bushing is rotationally symmetrical with respect to an axis and has a centrally routed electrical conductor, a field control device and an insulator surrounds the electrical conductor. The bushing also includes a tapering section that dielectrically strengthens a joint after insertion of the bushing into a plug part, which forms a seal for the insulating agent. The joint is arranged between an insulating sleeve of the plug part and the tapering section of the insulator. The bushing has capacitor plates, which are electrically isolated from one another by an insulating film, are integrated into the insulator, and pass through the mounting flange into the tapering section of the insulator. | 03-22-2012 |
| 20120068800 | POWER TRANSFORMER WITH AMORPHOUS CORE - A transformer of dry design is disclosed having a core composed of amorphous material, which is sensitive to mechanical loads, having at least one winding former which surrounds the core and is in each case formed from at least one primary winding and secondary winding, and having at least one holding apparatus. A method for transformer production is also disclosed, wherein the holding apparatus is used to fix the at least one primary winding and secondary winding in each case and for this purpose it acts on each of the end faces of the at least one winding former. | 03-22-2012 |
| 20120068640 | FLUX OFFSET COMPENSATION FOR A ROTATING ELECTRICAL MACHINE - A method is provided for compensating the flux drift caused by measurement and/or calculation errors when controlling a rotating electrical machine. The flux drift of the estimated flux vector may be compensated for by comparing the length of the flux vector with a reference flux magnitude which already has been determined for controlling the inverter. Depending on the comparison, the length of the estimated flux vector may be lengthened or shortened. | 03-22-2012 |
| 20120057276 | RESTRAINT SYSTEM FOR SWITCHGEAR DRAWOUT BREAKERS - A switchgear system includes rail structure having a base coupled to an interior sidewall of a frame. A first member extends from the base and has an upwardly facing surface. The first member has a second surface extending generally transversely to the upwardly facing surface to oppose a surface of the base. A second member extends from the base and has a downwardly facing surface spaced from the upwardly facing surface so as to define a wheel receiving channel there-between. A circuit breaker tuck includes wheels on exterior sidewalls. The wheels are received in the wheel receiving channel to be slidable along the upwardly facing surface, with the upwardly and downwardly facing surfaces limiting movement of the circuit breaker truck about the horizontal axis and the surface of the base and the second surface of the first member limiting movement of the circuit breaker truck about the vertical axis. | 03-08-2012 |
| 20120056706 | WOUND TRANSFORMER CORE WITH SUPPORT STRUCTURE - A wound transformer core is provided with at least one core loop made of a magnetic material. The transformer core includes multiple thin amorphous band-like iron sheets which are concentrically stacked around at least one center axis. A lower yoke section, an upper yoke section, and at least two limb sections are formed. The transformer core includes a modular plate-like support structure which is affixed upright to the center axis on both face sides of the lower yoke section and on both face sides of each limb section such that neighbored iron sheets are affixed together at their outer edge. The modular plate-like support structure includes, for each face side of the corresponding core sections, at least two plate-like modules, which are each connected to each other by a first or second plug-in connection. | 03-08-2012 |
| 20120056700 | MECHANICAL OVERRIDE DEVICE - A mechanical override device which is suitable for an undervoltage coil of a switching unit, is comprised of a first portion suitable for urging a plunger of the undervoltage coil in a first position which is taken by the plunger when the undervoltage coil is energized, and a second portion suitable for receiving an external movement command for imposing an operating movement to the first portion. The override device further comprises movement control means for controlling one or more cinematic parameters of the first portion so as to make the operating movement independent from the external movement command. | 03-08-2012 |
| 20120045369 | CHEMICAL ANALYSIS APPARATUS - A chemical analysis apparatus is disclosed as having a liquid flow train assembly for creating a flowing liquid sample stream guided from a sample inlet through the apparatus in a capillary tubing arrangement at low liquid flow rates, the sample containing an analyte to be measured; a reagents dosing and injection device located downstream the sample inlet for introducing a series of chemical reagents into the sample stream; a reactor where the reagents react with the analyte for producing a colored chemical indicator in the fully reacted sample; and a detection for measuring the chemical indicator, located downstream of the reactor means and being configured to receive the fully reacted sample with the colored indicator from the reactor means. The flow train assembly can intermittently let the fully reacted sample pass through the detector when the measurement of the indicator is not made, and to bypass the detector when the measurement of the chemical indicator in the sample is made. | 02-23-2012 |
| 20120044048 | SYSTEM FOR CREATING, COLLECTING, STORING AND PROVIDING ACCESS TO DATA FROM AN ELECTRIC POWER DEVICE WHICH CONTAINS A COOLING OR OPERATING LIQUID - A system is provided for creating and/or collecting, storing and providing access to data from an electric power device which contains a cooling or operating liquid. A sensing device is mounted on the electric power device. The sensing device includes a microprocessor/microcontroller, a memory, a display panel, an input panel, and a tag read/write apparatus. A sampling container for holding a liquid sample to be taken from the electric power device has a container tag mounted thereon. The tag read/write apparatus uses a wireless communication link, when a sample has been taken, to transmit (i) administrative data denoting the electric power device, and (ii) diagnosis data denoting the sample taken to the container tag. The diagnosis data can be input directly using the input panel of the sensing device when a sample has been taken. | 02-23-2012 |
| 20120033928 | REPAIR BOX FOR OPTICAL FIBRE COMPOSITE ELECTRIC POWER CABLE - A cable joint for jointing two cable ends of an optical fiber cable of an optical fiber composite electric power cable including an electric power cable and an optical fiber cable. The cable joint includes a repair box arranged between the two cable ends of the optical fiber cable. The repair box is arranged within the optical fiber composite electric power cable and further includes storage for storing extra length needed for jointing optical fibers of the optical fiber cable. | 02-09-2012 |
| 20120032762 | HIGH VOLTAGE DIRECT CURRENT CIRCUIT BREAKER ARRANGEMENT AND METHOD - A DC circuit breaker arrangement for interrupting a current on a transmission line or in a HVDC circuit is provided. The DC circuit breaker arrangement comprises a first DC breaker and a second DC breaker, identical to the first DC breaker. The second DC breaker is connected in parallel with the first DC breaker on the transmission line or in the HVDC circuit and the current is divided between the first and the second DC breakers. By means of the invention, a DC circuit breaker arrangement is provided able to handle very high currents. The invention also relates to a corresponding method. | 02-09-2012 |
| 20120026760 | DC VOLTAGE COMPENSATION IN A MULTI-TERMINAL HVDC POWER TRANSMISSION NETWORK - In a multi-terminal HVDC power transmission network comprising at least three HVDC converter stations interconnected by at least two transmission lines, where at least one of the transmission lines is a long line, an active voltage source device is series connected to one of the transmission lines, which maintains the DC voltage of the transmission lines of the network to be within a predefined voltage range by injecting an additional DC voltage in series with the one transmission line. | 02-02-2012 |
| 20120014072 | ELECTRIC MODULE WITH A FASTENING DEVICE - A fastening device for an electric module is disclosed. The fastening device is adapted for fastening at least one electric conductor unit at an electric module and includes a screw nut compartment adapted to receive a screw nut. The screw nut compartment has an open first side for inserting at least one of the screw nut and a screw. A second side arranged opposite to the first side. The fastening device further includes a stiffening extension formed at the second side of the screw nut compartment, wherein the stiffening extension has a non-circular cross section. | 01-19-2012 |
| 20120014041 | MEDIUM VOLTAGE CIRCUIT-BREAKER FOR OUTDOOR USE - A medium voltage circuit-breaker for outdoor applications includes at least one pole part with inner electrical contacts, operated by actuator means via a jackshaft arrangement accommodated in an enclosed main housing having a mounting surface. The pole part is removably attached to the mounting surface and an elastomeric sealing ring is arranged between the end surface of the pole part and a corresponding mounting surface of the main housing. A section of the sealing ring includes a solid porosity material, for air exchange between the inside of the main housing and the environment. | 01-19-2012 |
| 20120014032 | TRIP CIRCUIT SUPERVISION RELAY FOR LOW AND MEDIUM VOLTAGE APPLICATIONS - A Trip Circuit Supervision (TCS) relay for Low and Medium Voltage applications operatively connectable to a trip circuit of a Low or Medium Voltage apparatus, said TCS relay comprising first means for detecting the current circulating in said trip circuit, second means for detecting the continuous component of the current circulating in said trip circuit, third means for detecting the presence of pulses in the current circulating in said trip circuit, first enabling means for enabling said third means for detecting the presence of pulses in the current circulating in said trip circuit, signal generating means connected in input to said second and third means for detecting, respectively, the continuous component of and the presence of pulses in the current circulating in said trip circuit, and connected in output to control means operatively connectable to alarm generating means. | 01-19-2012 |
| 20120014018 | POWER AND CONTROL UNIT FOR A LOW OR MEDIUM VOLTAGE APPARATUS - A power and control unit for low and medium voltage applications, operatively couplable to one or more functions of a low or medium voltage apparatus, comprising:
| 01-19-2012 |
| 20120006665 | GAS-INSULATED SWITCHGEAR ASSEMBLY - A gas-insulated switchgear assembly is provided. The gas-insulated switchgear assembly includes at least one busbar which defines an axial direction. The busbar includes encapsulation which surrounds at least one nominal conductor. The encapsulation includes at least one pair of axially adjacent modules which are connected to one another via a compensation unit. The pair of modules are attached by at least one tie rod, which extends in the axial direction and is attached to a first attachment point of the first module and to the second attachment point of the second module. A thermal change in the length in the axial direction of the at least one tie rod between the first attachment point and the second attachment point, a thermal change in the axial direction in the distance between the first attachment point of the first module and the first reference point, and a thermal change in the axial direction in the distance between the second attachment point of the second module and the second reference point are at least partially compensated for such that the module distance changes by less than a predetermined amount in the axial direction when the encapsulation is heated or cooled. | 01-12-2012 |
| 20120001645 | COMBINED ELECTRICAL VARIABLE DETECTION DEVICE - A combined electrical variable detection device comprises a plurality of single-phase current measuring modules ( | 01-05-2012 |
| 20120000628 | METHOD FOR FUNCTION MONITORING AND/OR CONTROL OF A COOLING SYSTEM, AND A CORRESPONDING COOLING SYSTEM - Exemplary embodiments relate to a system and method for monitoring functional operational reliability of a cooling system having at least one thermosyphon for transformers provided with at least one evaporator and with at least one condenser. The cooling system using a coolant which can be vaporized and a gaseous medium, as a heat carrier. | 01-05-2012 |
| 20110320058 | IMPLEMENTING SUBSTATION AUTOMATION LOAD TRANSFER FUNCTION - A process of implementing, or engineering, topology-dependent functions based on a formal description of the Substation Automation system, includes performing a topology analysis of the current single line state. A topology interpreting implementation replacing complex topology analysis logics can include the project specific static single line topology and the connection to the real process state data. All information can be delivered in an IEC 61850 conforming SCD file. The interface description for controlling and monitoring the load transfer application can be generated automatically from the SCD file. | 12-29-2011 |
| 20110310641 | METHOD OF UPGRADING A PLANT FOR TRANSMITTING ELECTRIC POWER AND SUCH A PLANT - A plant for transmitting electric power through HVDC includes two converter stations interconnected by a monopolar direct voltage network and each having an alternating voltage side for feeding electric power from one of said alternating voltage sides to the other. Each station has a line commutated converter. The plant is upgraded by making the direct voltage network bipolar, providing each station with a Voltage Source Converter and providing two switches for both line commutated converters or both Voltage Source Converters and a device configured to control said four switches. | 12-22-2011 |
| 20110310523 | ELECTRICAL APPARATUS WITH ELECTROSTATIC SHIELD - An electrical apparatus, which is preferrably operated at voltages above 1 kV, comprises an electrostatic shield to reduce the electrical field strength outside of the apparatus. Advantageoulsy, the electrostatic shield is at least in part formed by a dielectric enclosure containing water. | 12-22-2011 |
| 20110309939 | UNIT FOR MONITORING AND/OR SIGNALING OR VISUALIZING OPERATING PARAMETERS OF A GAS-INSULATED SWITCHGEAR SYSTEM - Exemplary embodiments are directed to a monitoring unit and method for monitoring and/or signaling or visualizing a plurality of operating parameters of a gas-insulated switchgear system, where a current and voltage supply unit are located in the housing of the monitoring unit. At least one measurement cell capturing the density or the pressure of a protective gas present in the gas chamber of the gas-insulated switchgear system is also included in the monitoring unit. A processing unit processing the parameters captured by the measurement cell. The monitoring unit also includes a unit for measuring partial discharge and/or a unit for capturing an arc fault arising in the gas chamber of the switchgear system, and an interface for transferring analog and/or digital values. | 12-22-2011 |
| 20110309902 | ELECTRIC TRANSFORMER WITH IMPROVED COOLING SYSTEM - An electric transformer comprising: a magnetic core; at least one coil assembly which is positioned around a portion of the magnetic core and comprises a plurality of windings; a structure adapted for applying a clamping force on the magnetic core and/or the windings; and a cooling circuit adapted for conveying cooling fluid directly inside the coil assembly. | 12-22-2011 |
| 20110298468 | METHOD AND APPARATUS FOR DETECTING A PHASE-TO-EARTH FAULT - A method and an apparatus for detecting a phase-to-earth fault on a three-phase electric line of an electric network, the apparatus determining a neutral admittance based on a ratio of a difference between zero sequence currents on the three-phase electric line and a difference between zero sequence voltages in the electric network before an earth fault and during the earth fault. The apparatus also compares the determined neutral admittance, to a predetermined operation characteristic to detect a phase-to-earth fault on the three-phase electric line. The predetermined operation characteristic, when presented on an admittance plane, defines a closed area such that the center of the closed area is offset from the origin of the admittance plane towards a negative susceptance direction and/or towards a negative conductance direction. | 12-08-2011 |
| 20110295529 | CONTROL OF PROTECTION RELAY - A protection relay and a method for controlling a protection relay are provided. An input parameter value is measured for the protection relay, and a calculation parameter value is determined based on an inverse definite minimum time curve defining a relationship between the input parameter value and a predetermined threshold value of the input parameter, wherein the calculation parameter values are divided into two or more zones and restricted with zone-specific dividers. The restricted calculation parameter value is added to a cumulative sum of the calculation parameter, where the cumulative sum of the calculation parameter is usable in a calculation equation for determining an operate and/or reset condition of the protection relay. | 12-01-2011 |
| 20110292575 | ELECTRIC SWITCHGEAR PANEL WITH IMPROVED ARC PROTECTION ASSEMBLY - A switchgear panel comprises an enclosure having an internal volume suitable to accommodate corresponding electrical or electronic equipment, and an arc protection assembly which is operatively associated to a wall of the enclosure. The arc assembly comprises at least a first barrier element having a first surface which is provided with one or more first through openings defining each a respective same first venting area, and a second barrier element which comprises a second surface provided with one or more second through openings defining each a respective same second venting area. The first venting area of each first through opening is different from the second venting area of the second through openings. | 12-01-2011 |
| 20110291791 | METHOD FOR PRODUCING WINDINGS FOR A DRY-TYPE TRANSFORMER - A method is provided for producing windings for a dry-type transformer with in each case one winding for the low voltage (LV winding) and one for the high voltage (HV winding). The LV and HV windings are each electrically insulated from one another and have layers which are electrically insulated from one another by virtue of, initially, the winding for the low voltage being produced from electrically conductive wire or tape material and an insulating layer including resin-impregnated fibre material. Prior to the application of the HV winding, the maximum insulating thickness for the layer insulation and the number of fibre rovings corresponding to this insulating thickness can be determined, and each winding layer and the associated insulating layer can be produced simultaneously with a physical offset with respect to one another. To produce the winding, fibre polymer layers can be applied, as layers of insulation, simultaneously with the winding conductor between the individual winding layers of the winding, and the finished winding is subjected to a curing operation. | 12-01-2011 |
| 20110290761 | ARC CHUTE, CIRCUIT BREAKER FOR A MEDIUM VOLTAGE CIRCUIT, AND USE OF A POLYMER PLATE - The disclosure relates to an arc chute for a medium voltage circuit breaker having a housing, at least one stack of a plurality of substantially parallel metal plates arranged in the housing, the at least one stack defining a first axis in parallel to a stacking direction; an arc space arranged in the housing, wherein the arc space is adapted to allow an arc to expand therein; and at least one arc quenching plate disposed in the housing, wherein the arc guiding plate has at least one surface which has a surface plane extending in parallel to the first axis. Further, the present disclosure relates to a circuit breaker having a switching unit with a first switch contact and a second switch contact, movable between a first position, wherein the first switch contact contacts the second switch contact, and a second position, wherein the first switch contact is separated from the second switch contact, and an arc chute. Additionally, the disclosure relates to a polymer plate selected of a group containing a flame retardant polymer, a flame retardant polymer having a flame retardant filler, and a polymer having a flame retardant filler as an arc quenching plate. | 12-01-2011 |
| 20110287650 | PLUG-IN UNIT ASSEMBLY - A plug-in unit assembly is disclosed which includes a case and a plug-in unit arranged to be removably connected to the case. The plug-in unit includes a unit body, a handle and an actuating member. The handle is pivotally connected to the unit body and operationally connected to the actuating member, the actuating member being movably connected to the unit body. The case includes a locking counterpart element and a releasing counterpart element, each of which is adapted to co-operate with the actuating member for moving the plug-in unit. The locking counterpart element is adapted to move the plug-in unit to a plugged-in position, and the releasing counterpart element is adapted to move the plug-in unit to an outer releasing position. | 11-24-2011 |
| 20110286350 | COMMUNICATION METHOD AND SYSTEM - Exemplary embodiments increase reliability of communication over a non-deterministic communication channel, in electric power systems. A communication channel is monitored based on regular network traffic, by evaluating messages or data packets carrying real-time operational data as a payload. A permanent determination of a channel quality, including appropriate alarming in case the channel quality is found insufficient, is based on an evaluation, at a receiving node, of data packets continually transmitted by a sending node. These continually or repeatedly transmitted data packets can include identical payloads reflecting current states rather than state changes as operational data. | 11-24-2011 |
| 20110286153 | HIGH-VOLTAGE SWITCHGEAR ASSEMBLY - The invention relates to a gas-insulated high-voltage switchgear, comprising at least one bus bar with three phase conductors, whereby each phase conductor is connected to the input of a respectively provided bus bar section. The phase conductor and the bus bar section are arranged in a three-phase bus bar module with three single-phase power switches, each arranged in a separate power switch housing and each bus bar section is connected at the output therefrom to a respectively provided power switch. | 11-24-2011 |
| 20110283787 | THERMAL MASS FLOWMETER WITH A METAL-ENCAPSULATED SENSOR SYSTEM - A thermal mass flowmeter with a metal-encapsulated sensor system is provided. The sensor system included at least one heating resistor having a platelet geometry, and a sensor cap surrounding the at least one heating resistor. At least one distal end area of the sensor cap is formed with a flat rectangular cross section corresponding to the platelet geometry of the heating resistor, such that the distal end area of the sensor cap surrounds the heating resistor closely with an accurate fit (e.g., with a predetermined gap therebetween). | 11-24-2011 |
| 20110279207 | LINE-POWERED INSTRUMENT TRANSFORMER - An instrument transformer for measuring properties of electricity in a power line is provided. The instrument transformer includes a cover section releasably secured to a base section. The cover section includes a first core segment encapsulated in a first encasement formed from a polymer resin. The base section includes a second core segment with a low voltage winding mounted thereto and a voltage transformer, all of which are encapsulated in a second encasement formed from a polymer resin. When the cover section and the base section are secured together, the first core segment adjoins the second core segment, thereby forming a current transformer having a core formed from the first and second core segments. A method for making the instrument transformer further comprises the connection of the cover section to the base section to form a passage through which a high voltage conductor may extend. | 11-17-2011 |
| 20110278694 | BIPOLAR PUNCH-THROUGH SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SUCH A SEMICONDUCTOR DEVICE - A bipolar punch-through semiconductor device has a semiconductor substrate, which includes at least a two-layer structure, a first main side with a first electrical contact, and a second main side with a second electrical contact. One of the layers in the two-layer structure is a base layer of the first conductivity type. A buffer layer of the first conductivity type is arranged on the base layer. A first layer includes alternating first regions of the first conductivity type and second regions of the second conductivity type. The first layer is arranged between the buffer layer and the second electrical contact. The second regions are activated regions with a depth of at maximum 2 μm and a doping profile, which drops from 90% to 10% of the maximum doping concentration within at most 1 μm. | 11-17-2011 |
| 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 |
| 20110273259 | DRY-TYPE TRANSFORMER - A dry-type transformer includes at least one high-voltage winding and one low-voltage winding. The windings are operatively connected to one another by an electromagnetic field, and each winding is constructed from winding conductors, wherein the high-voltage winding and the low-voltage winding have a defined distance from one another, and spacers are arranged between the windings and maintain the defined distance. | 11-10-2011 |
| 20110273256 | MODULAR RING-SHAPED CORE - The disclosure relates to a ring-shaped core for a power transformer. The ring-shaped core extends about an imaginary center axis in the form of a closed toroidal structure and is constituted of a plurality of adjacent layers of sheet metal. The ring-shaped core, along the length of the toroidal structure, is constituted of at least three core section modules that can be connected to and detached from each other, the core section modules being interconnected by an overlap of individual sheet layers and/or sheet layer sections. The disclosure also relates to the arrangement of ring-shaped cores having winding modules. The latter can be arranged in a common connecting structure and every ring core having winding modules arranged therein can be separately introduced into the connecting structure and removed therefrom in a non-destructive manner. | 11-10-2011 |
| 20110270455 | METHOD FOR PERFORMING SERVICE/MAINTENANCE ON A SWITCHGEAR PANEL, AND RELATED SWITCHGEAR PANEL - A switchgear panel and a method for servicing/maintaining a switchgear panel are disclosed which provide a Human Machine Interface that includes a first memory unit, and a first circuit breaker on board of which an Intelligent Electronic Device is placed. The Intelligent Electronic Device having an associated memory unit. The first memory unit and/or on the associated memory unit storing sets of data related to one or more of the switchgear panel, the first Intelligent Electronic Device, and the first circuit breaker. The Human Machine Interface is in operative communication with the first Intelligent Electronic Device, to transfer and save one or more of the sets of data stored on the associated memory unit onto the first memory unit or vice versa. | 11-03-2011 |
| 20110264282 | SYSTEM AND METHOD FOR OPTIMIZED DECISION-MAKING IN WATER SUPPLY NETWORKS AND/OR WATER SUPPLY OPERATIONS - A system and method are provided for optimized decision-making in water supply networks and/or water supply operations. The system includes at least one central data processing device and a control system having at least one integration device. The system also includes at least one functional unit for identifying and/or processing status information affecting the respective network or operation. The functionality of the at least one functional unit can be integrated and/or incorporated into the control system by means of the integration device such that the control system functionality is expanded by the functionality of the respective functional unit and/or control system, and the at least one function unit cooperates such that individual functions and/or the functionality of the respective functional unit can be called up and/or executed and/or utilized via the integration unit and/or the control system, and resulting additional status information can be obtained and provided for decision-making, for example, relating to a technical task or technical problem. | 10-27-2011 |
| 20110261598 | POWER CONVERTER WITH MULTI-LEVEL VOLTAGE OUTPUT AND HARMONICS FILTER - A device for converting a DC voltage into an AC voltage and vice versa comprises at least one phase leg with a first voltage source and a first inductor connected in series between a first DC terminal and a first AC terminal and with a second inductor and a second voltage source connected in series between the first AC terminal and a second DC terminal, where each of the voltage sources comprises at least a first and a second submodule in series-connection, each submodule comprising at least one power electronic switch connected in parallel with at least one capacitor. In the device, a passive electronic filter is arranged between the first and the second inductor as well as the first AC terminal for reducing harmonics in a circulating current. | 10-27-2011 |
| 20110261057 | METHOD AND DEVICE TO SUPERVISE A POWER NETWORK - A method and a device to supervise a power network are described, where data representing at least a part of the power network are processed and transformed into graphical data, the graphical data are displayed on a graphical display unit as a first visualization of the power network at a less detailed zoom level and a user request on how to modify the first visualization is processed, where the user request is received from a user input unit. In the first visualization, there is displayed at least one selectable element which is selectable via the user input unit and which is assigned to a predefined portion of the power network and to a more detailed zoom level. After a user request is received indicating that the selectable element was selected by a user, the predefined portion of the power network is displayed at the more detailed zoom level as a second visualization on top of the first visualization. | 10-27-2011 |
| 20110260545 | VOLTAGE IN A VOLTAGE SOURCE CONVERTER, A VOLTAGE SOURCE CONVERTER AND A METHOD FOR CONTROL THEREOF - A VSC converter includes in each valve one first semiconductor device of turn-off type with a voltage blocking capacity rating of a first, high level and connected in parallel therewith a series connection of a plurality of second semiconductor devices of turn-off type with a voltage blocking capacity rating of a second, lower level. A control arrangement of the converter is configured to switch a said valve into a conducting state starting from a forward biased blocking state of the valve by controlling the second semiconductor devices to be turned on and then the first semiconductor devices to be turned on with a delay, and at the end of the conducting state to turn off the first semiconductor device in advance of turning the second semiconductor devices off. | 10-27-2011 |
| 20110255318 | INSULATOR INTEGRATED POWER SUPPLY - A power scavenging device attaches to an overhead power cable and a support pole. The power scavenging device includes a non-conducting outer body and a first capacitor and a second capacitor that are connected in series forming a voltage divider. A voltage source converter is electrically connected to the output of the power scavenging device. The voltage source converter outputs a regulated power. | 10-20-2011 |
| 20110253676 | SWITCH UNIT AND CIRCUIT BREAKER FOR A MEDIUM VOLTAGE CIRCUIT - A switch unit | 10-20-2011 |
| 20110248808 | OUTDOOR DRY-TYPE TRANSFORMER - A three-phase dry distribution transformer adapted for mounting outdoors on a pad or to a utility pole. The distribution transformer includes one or more winding assemblies mounted to a ferromagnetic core. Each winding assembly includes a low voltage winding and a high voltage winding. In each winding assembly, an encasement comprised of an insulating resin encapsulates the low voltage and high voltage windings. The encasement includes a body and a pair of high voltage bushings and a pair of low voltage bushing. | 10-13-2011 |
| 20110247997 | 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. | 10-13-2011 |
| 20110227686 | TRANSFORMER ASSEMBLY - A transformer assembly is disclosed which includes a housing and an electrical transformer having a tank which is positioned inside the housing. A device for electrically connecting the transformer to an electrical article outside the housing includes a shaped body having a first face which is suitable to be connected to one of the walls of the tank, and a second face which is suitable to be connected to one of the walls of the housing. The shaped body can include a deformable portion which is adapted to adjust the positioning of the second face relative to the wall of the housing to which it is suitable to be connected. | 09-22-2011 |
| 20110227685 | TRANSFORMER ASSEMBLY - An exemplary transformer assembly as disclosed herein includes an electrical transformer having a transformer tank and a housing inside which the transformer tank is accommodated. The housing includes at least one side wall which has a minimum thickness (T) and is positioned at a minimum distance (D) from a corresponding facing side wall of the tank. The ratio between the thickness (T) and the distance (D) is between 0.0001 and 100. | 09-22-2011 |
| 20110227684 | TRANSFORMER ASSEMBLY - An exemplary transformer assembly as disclosed herein includes an electrical transformer having a transformer tank and a housing inside which the transformer tank is accommodated. The space between the transformer tank and the housing contains a gaseous atmosphere. The level of oxygen of the gaseous atmosphere inside the space is regulated below or equal to a first predefined threshold at a first status of the electrical transformer and equal to or above a second predefined threshold at a second status of the electrical transformer. | 09-22-2011 |
| 20110226369 | PRESSURE COMPENSATOR - A pressure compensator is configured to compensate for volume variations of an insulation medium or other liquid of a subsea installation. The pressure compensator includes a first bellows chamber having a first bellows part. The first bellows chamber is in flow connection with an insulation medium or liquid chamber of the subsea installation, and the walls of the first bellows chamber are configured to separate the insulating medium from surroundings. The first bellows chamber is surrounded by a second bellows chamber having an end wall, a side wall and a second bellows part formed by a diaphragm. The second bellows chamber is configured to form a closed intermediate space around the first bellows chamber. The walls of the second bellows chamber are configured to separate at least the bellows parts of the first bellows chamber from the surrounding water. The second bellows chamber is filled with an intermediate medium. | 09-22-2011 |
| 20110221556 | TRANSFORMER - A transformer is provided with at least one core leg on which three windings are arranged side by side, whose discharges are designed to be mutually insulated. Each winding is formed by a near-core low-voltage winding, which are each wound by an associated high-voltage winding, and the discharges of the low-voltage windings are axially designed, so that the lateral spacing of the windings to each other is minimized. | 09-15-2011 |
| 20110213574 | METHOD AND APPARATUS FOR CALCULATING THE MAXIMUM DISPLACEMENT OF A ROTATING SHAFT - A method is disclosed for monitoring the vibration of a rotating shaft including, measuring a current shaft position and determining a centroid of the shaft. The current shaft sector is then determined. The current distance between the centroid and the current shaft position may then be determined. The current distance is compared with a previously stored maximum distance for that sector, and if greater, the current shaft position and current distance is stored as the new maximum for that sector. After a predetermined period of time, the maximum displacement between the stored maximum positions is calculated, which represents the maximum shaft displacement peak to peak. This value may then be visually displayed or automatically monitored by shaft control computers. | 09-01-2011 |
| 20110204414 | REVERSE-CONDUCTING SEMICONDUCTOR DEVICE - A reverse-conducting semiconductor device includes a freewheeling diode and an insulated gate bipolar transistor (IGBT) on a common wafer. Part of the wafer forms a base layer with a base layer thickness. The IGBT includes a collector side and an emitter side arranged on opposite sides of the wafer. A first layer of a first conductivity type and a second layer of a second conductivity type are alternately arranged on the collector side. The first layer includes at least one first region with a first region width and at least one first pilot region with a first pilot region width. The second layer includes at least one second region with a second region width and at least one second pilot region with a second pilot region width. Each second region width is equal to or larger than the base layer thickness, whereas each first region width is smaller than the base layer thickness. Each second pilot region width is larger than each first pilot region width. Each first pilot region width is equal to or larger than two times the base layer thickness, and the sum of the areas of the second pilot regions is larger than the sum of the areas of the first pilot regions. | 08-25-2011 |
| 20110203379 | PRESSURE COMPENSATOR - A pressure compensator is configured to compensate for volume variations of an insulation medium of a subsea installation. The pressure compensator includes a first bellows chamber having walls and a first bellows part. The first bellows chamber is in flow connection with an insulation medium chamber of the subsea installation, and the walls of the first bellows chamber are configured to separate the insulating medium from surroundings. The first bellows chamber is surrounded by a second bellows chamber having walls and a second bellows part. The second bellows chamber is configured to form a closed intermediate space around the first bellows chamber. The walls of the second bellows chamber are configured to separate at least the bellows parts of the first bellows chamber from the surrounding sea water. The second bellows chamber is further filled with an intermediate medium. | 08-25-2011 |
| 20110189861 | Deposition Method for Passivation of Silicon Wafers - A substrate is mounted onto an elevated substrate support of a substrate carrier plate. The substrate carrier plate with the substrate is then placed in a plasma reactor. Due to the elevated substrate support, both opposite sides of the substrate are exposed to the plasma and are therefore coated with an electrical passivation layer. | 08-04-2011 |
| 20110180292 | HIGH-VOLTAGE ISOLATOR WITH FIELD CONTROL ELEMENT - A high-voltage isolator is disclosed which has a first electrical connecting piece and a second electrical connecting piece, between which an electrical isolating body extends. The end sections of the connecting pieces are connected to the isolating body, with a toroidal field control element being arranged on at least one of the end sections. A slot, which extends in the circumferential direction of the end section, is introduced on the end section which has the field control element. The field control element and the respectively associated end section are formed integrally. As a result of the slot, tension and compression forces which occur during longitudinal and lateral contractions of the isolating body and act at right angles to the longitudinal axis of the end section can be largely prevented, as can shear forces, while at the same time achieving a high level of uniformity in an area of the isolating gap, for electrical fields which occur during operation. | 07-28-2011 |
| 20110175695 | HOUSING FOR AN ELECTRIC MACHINE - The disclosure relates to a housing for an electric machine, for example, an electric power transformer, such as a dry-type transformer, with cooling channels being provided within the housing for a cooling medium. The electric machine and a cooling system can be arranged in the housing, with vertically arranged first and second channels for the cooling medium being provided. The medium can flow around the electric machine, with the housing accommodating the electric machine and the cooling system substantially forming a hermetic encapsulation. | 07-21-2011 |
| 20110175460 | DC CURRENT BREAKER - A device for breaking DC currents exceeding 2500 A has a resonance circuit connected in parallel with an interrupter and a surge arrester connected in parallel with the resonance circuit. The resonance circuit has a series connection of a capacitor and an inductance. The relationship of the capacitance in μF to the inductance in μH of the resonance circuit is ≧1. | 07-21-2011 |
| 20110168533 | CAM DISK AND SPRING EXCURSION SWITCH FOR A STORED-ENERGY SPRING MECHANISM AND STORED-ENERGY SPRING MECHANISM - The disclosure relates to a cam disc and to a spring deflection switch having a cam disc for a spring-loaded drive, wherein the cam disc includes a first, second and third circumferential region, each having at least one corresponding radial extension, for actuating a pushbutton including a switching hysteresis. The at least one second radial extension is larger than the at least one third radial extension, which in turn is larger than the at least one first radial extension. The pushbutton can interact with the cam disc in the spring deflection switch such that when the pushbutton is applied by the first circumferential region, the switching contact assumes a first switching position, and when the pushbutton is applied by the second circumferential region, the switching contact assumes a second switching position, and when the pushbutton is applied by the third circumferential region, the switching contact remains in the switching position assumed earlier. | 07-14-2011 |
| 20110167958 | ELECTRIC MOTOR ACTUATING DRIVE - Exemplary embodiments are directed to an actuating drive. The actuating drive includes an electric motor that is operatively connected to a fitting via a device unit and a transmission unit that is equipped with a manual device. The drive unit combines functional units of the manual drive, the brake, the manual drive and a displacement feedback of the brake in an attachable housing. | 07-14-2011 |
| 20110163070 | LOW-VOLTAGE, MEDIUM-VOLTAGE OR HIGH-VOLTAGE ASSEMBLY - The disclosure relates to a voltage assembly having at least one short circuiting device in which a moving contact piece can be closed onto a fixed contact piece. In order to prevent breakdown at least two separated vacuum zones are arranged along a moving path of the fixed contact piece. | 07-07-2011 |
| 20110162736 | AUTONOMOUS TEMPERATURE TRANSMITTER - The exemplary embodiments relate to an autonomous temperature transmitter for use in process installations. In order to feed an electronic component with energy, a thermoelectric transducer is arranged such that it is thermally operatively connected to at least one thermal conducting element between an internal thermal coupling element and an external thermal coupling element, the internal thermal coupling element being thermally coupled to the process medium and the ambient air flowing around the external thermal coupling element. | 07-07-2011 |
| 20110160923 | METHOD AND APPARATUS FOR MONITORING THE PERFORMANCE OF A POWER DELIVERY CONTROL SYSTEM - A power delivery control system and a method of monitoring the same are provided. The control system includes a plurality of computers. Initial data is collected based on the processes running on each computer. If the initial data meets threshold criteria, more detailed data is collected to facilitate root cause analysis. All data is collected using operating system kernel interfaces and is time stamped. On each computer, correlated collected data may be displayed in a GUI. | 06-30-2011 |
| 20110156695 | Magneto Optical Current Transducer with Improved Outage Performance - A MOCT metering system includes a cutoff module that ensures zero output when values from an optical module fall below a threshold value. The cutoff module includes an RMS to DC converter that drives a comparator. The comparator drives a switch that causes the cutoff module to pass through the measured signal unmodified if above a threshold value and to output a zero voltage signal if below a threshold value. | 06-30-2011 |
| 20110155555 | MEDIUM VOLTAGE CIRCUIT BREAKER - A Medium Voltage circuit breaker which comprises a pole assembly having, for each phase, a first fixed contact and a second movable contact reciprocally couplable/uncouplable between an open and close position. The circuit breaker further comprises an actuator to actuate the opening and closing operation of said circuit breaker, and a kinematic chain operatively connecting said actuator to said movable contact. The kinematic chain comprises a sliding element operatively connected to said actuator, said sliding element having a first sliding surface operatively coupled to said movable contact and being movable between a first, open, position and a second, closed, position. | 06-30-2011 |
| 20110155547 | MEDIUM VOLTAGE CIRCUIT BREAKER - A Medium Voltage circuit breaker which comprises a pole assembly having, for each phase, an interruption chamber housing a first fixed contact and a second movable contact reciprocally couplable/uncouplable between an open and close position; the Medium Voltage circuit breaker further comprises an actuator to actuate the opening and closing operation of said circuit breaker and an insulating base frame supporting said pole assembly and said actuator. | 06-30-2011 |
| 20110147880 | POWER SEMICONDUCTOR DEVICE WITH NEW GUARD RING TERMINATION DESIGN AND METHOD FOR PRODUCING SAME - A power semiconductor device, such as a power diode, and a method for producing such a device, are disclosed. The device includes a first layer of a first conductivity type, a second layer of a second conductivity type arranged in a central region on a first main side of the first layer, a third electrically conductive layer arranged on the second layer, and a fourth electrically conductive layer arranged on the first layer at a second main side opposite to the first main side. A junction termination region surrounds the second layer with self-contained sub-regions of the second conductivity type. A spacer region is arranged between the second layer and the junction termination region and includes a self-contained spacer sub-region of the second conductivity type which is electrically disconnected from the second layer. This spacer sub-region has a width for enabling a reliable alignment of a shadow mask during an ion implantation such that an implanted lifetime control region having carrier lifetime reducing defects may be restricted to a central area while no such defects are implanted into the junction termination region to improve electrical characteristics. | 06-23-2011 |
| 20110144776 | SYSTEM AND METHOD FOR THE SIMPLIFIED OPERATION AND MANIPULATION OF AN AUTOMATION AND/OR PROCESS CONTROL SYSTEM - A system and method are provided for the simplified operation of an automation system. The system and method link knowledge-based and/or empirical and historical data to real-time data, such as alarm messages and/or event messages, in cooperation with a control system, such as a process control system. Data and/or links or references to data and/or process states are acquired and stored by means of a first data processing device and can be made available to at least one second data processing device for further processing via at least one allocated communication link, such as a network or bus system. | 06-16-2011 |
| 20110136451 | TELECOMMUNICATION DEVICE HAVING A LOOP-SUPPLIED DEVICE AND METHOD FOR THE OPERATING VOLTAGE SUPPLY THEREOF - A telecommunication device has a power-supplying receiving device, and a transmitter device supplied by the receiving device via a current loop for the output of at least one variable measurement value. The measurement value is imprinted on the loop current. The telecommunication device also includes an additional appliance supplied from the current loop. The additional appliance includes a control device for adaptively adjusting its operating voltage relative to the loop current as a function of the current power requirement. The control device reduces the operating voltage up to a minimum operating voltage value upon increasing loop current in a reversed proportional manner to the loop current, and keeps the operating voltage constant in case of a further increase of the loop current in a loop current independent manner. | 06-09-2011 |
| 20110136300 | METHOD FOR PRODUCING A SEMICONDUCTOR DEVICE USING LASER ANNEALING FOR SELECTIVELY ACTIVATING IMPLANTED DOPANTS - A method for producing a semiconductor device such as a RC-IGBT or a BIGT having a patterned surface wherein partial regions doped with dopants of a first conductivity type and regions doped with dopants of a second conductivity type are on a same side of a semiconductor substrate is proposed. An exemplary method includes: (a) implanting dopants of the first conductivity type and implanting dopants of the second conductivity type into the surface to be patterned; (b) locally activating dopants of the first conductivity type by locally heating the partial region of the surface to be patterned to a first temperature (e.g., between 900 and 1000° C.) using a laser beam similar to those used in laser annealing; and (c) activating the dopants of the second conductivity type by heating the substrate to a second temperature lower than the first temperature (e.g., to a temperature below 600° C.). Boron is an exemplary dopant of the first conductivity type, and phosphorous is an exemplary dopant of the second conductivity type. Boron can be activated in the regions irradiated only with the laser beam, whereas phosphorus may be activated in a low temperature sintering step on the entire surface. | 06-09-2011 |
| 20110133754 | TEST ARRANGEMENT FOR IMPULSE VOLTAGE TESTING OF ELECTRICAL HIGH-VOLTAGE COMPONENTS - Exemplary embodiments are directed to a test arrangement for testing surge voltage in electrical high voltage components with a surge voltage generator and a voltage distributor. The surge voltage generator and voltage distributor have a tower-like structure with a first and a second structure end. A rectangular container is connected to the first and second structure and includes a first and a second container end. At least one of the surge voltage generator and the voltage distributor are movable between a first substantially horizontal position inside the container and a substantially vertical position relative to the container. Each movement between the two positions involves a pivot motion about a rotational axis perpendicular to the longitudinal direction of the surge voltage generator. | 06-09-2011 |
| 20110133749 | TEST ARRANGEMENT FOR AC TESTING OF ELECTRICAL HIGH VOLTAGE COMPONENTS - A test arrangement is provided for AC testing of electrical high voltage components including at least one inverter, at least one test transformer and at least one high-voltage inductor arranged as test components in a common cuboid container. The at least one high-voltage inductor is at least partly removable from the container through at least one opening on a boundary surface of the container by means of a movement apparatus. | 06-09-2011 |
| 20110132187 | HYDRAULIC STORED-ENERGY SPRING MECHANISM - Exemplary embodiments are directed to a hydraulic stored-energy spring mechanism for a high voltage circuit breaker. The spring mechanism includes a working cylinder situated in a working cylinder housing, at least one spring and at least one compression piston. The compression piston is slidably displaceable in a storage cylinder. The at least one storage spring pressurizes fluid located in the storage piston via the compression piston. The storage spring is held in a form-fitting manner by a support tube unit in the preloaded state. | 06-09-2011 |
| 20110128013 | TEST ARRANGEMENT FOR AC TESTING OF ELECTRICAL HIGH VOLTAGE COMPONENTS - A test arrangement is provided for AC testing of electrical high voltage components including at least one inverter, at least one test transformer and at least one high voltage inductor arranged as test components in a common cuboid container. The at least one high voltage inductor runs along an imaginary axis and may be at least partly removed from the container through at least one opening in a limit face of the container by means of a movement device. The at least one high voltage inductor includes has integrated surge protection. | 06-02-2011 |
| 20110122550 | PARTITIONING DEVICE FOR MV CUBICLES - A partitioning device for Medium Voltage cubicles which comprises at least a fixed partition wall and at least a movable partition shutter. The partition shutter is capable to be moved between a first, closed, position and a second, open, position. The partitioning device further comprises an actuating device which is operatively connected to said partition shutter and capable to be operatively interfaced to a Medium Voltage circuit breaker and further capable to be actuated by a movement of said Medium Voltage circuit breaker during an insertion/extraction operation of said circuit breaker. | 05-26-2011 |
| 20110121853 | TEST ARRANGEMENT FOR AC VOLTAGE TESTING OF ELECTRICAL HIGH VOLTAGE COMPONENTS - A test arrangement is provided for AC voltage testing of high voltage components including at least one inverter, at least one test transformer, at least one high-voltage inductor and at least one further high voltage component arranged as test components in a common cuboid container. The at least one high-voltage inductor is movable at least partially out of the container through at least one opening on a boundary surface of the container, by means of a movement apparatus. The at least one further high voltage component is movable within the cuboid container from a transport position to a working position. | 05-26-2011 |
| 20110121817 | METHOD FOR INCREASING THE AVAILABILITY OF DISPLACEMENT/POSITION MEASURING SYSTEMS ON THE BASIS OF POTENTIOMETERS WITH A SLIDER TAP (III) - A method for increasing the availability of displacement/position measuring systems using a potentiometer with a slider tap in a closed control loop. The controller of the potentiometer is formed by a microcontroller which is supplied with the position of the slider via an analog/digital converter. The operating range is shifted within the sensor range in a direction of one of two limits of the operating range at least by a distance between the other of two limits of the operating range and a defective slider position by temporarily interrupting an operative connection between the displacement pick-off on the actuator and the potentiometer shaft. | 05-26-2011 |
| 20110120976 | POLE PART OF A MEDIUM-VOLTAGE OR HIGH-VOLTAGE SWITCH GEAR ASSEMBLY, AND METHOD FOR ITS PRODUCTION - A pole part of a switchgear assembly having a vacuum interrupter chamber is provided. To ensure that heat is dissipated to the exterior for convection, a thermally conductive heat transmission element in the form of a cylindrical casing is provided between the vacuum interrupter chamber, a contact holder and an encapsulation casing. An inner surface of the heat transmission element rests on the vacuum interrupter chamber and the contact holder, and an outer surface of the heat transmission element rests on an inner surface of the encapsulation casing inner surface. The heat transmission element can be produced from a thermally conductive plastic using an injection-molding or molding-compound production process. The heat transmission element can be connected to the pole part through openings. The heat transmission element can be arranged before the encapsulation of with an encapsulation compound, and be cast in the encapsulation casing. | 05-26-2011 |
| 20110120975 | GAS-INSULATED HIGH-VOLTAGE SWITCH - A high-voltage switch contains two contact members, which can be moved relative to one another along an axis, a nozzle for blowing out a switching arc with quenching gas, and a stationary direction-changing transmission, which is connected to the nozzle and to the second contact member. The nozzle has a hollow insulating body, and a metallic annular body which is arranged at a blowing-out end of the nozzle, is connected in a formfitting manner to the insulating body, and supports an input or output drive element of the direction-changing transmission. This switch can be manufactured easily and at low cost, and provides good mechanical and electrical characteristics. The annular body has a concentrically arranged intermediate ring, which causes the form fit with the insulating body, and a ring, which is pushed onto the intermediate ring and is attached to the intermediate ring, for supporting the input-drive or output-drive element. | 05-26-2011 |
| 20110120264 | MANUAL DRIVE FOR AN ELECTRIC-MOTOR ACTUATING DRIVE - A manual drive is provided for an electric-motor actuating drive for controlling fittings for process automation. The manual drive includes a constraining transmission, whose output drive can be operatively connected for braking purposes to the motor shaft, such that force can be transmitted, via a detachable clutch which is operable electrically. | 05-26-2011 |
| 20110109319 | TEST CONFIGURATION FOR THE IMPULSE VOLTAGE TEST OF ELECTRIC HIGH-VOLTAGE COMPONENTS - The embodiments relate to a test configuration for an impulse voltage test of electric high-voltage components with a lightning generator. The lightning generator can be moved between a first horizontal position within a cuboid container, and a vertical position relative to the container. A movement between the two positions includes a pivoting movement about a rotational axis. The proofing movement is transverse to the longitudinal direction of the lightning generator. The container can be closed at the top by at least one moveable cover. | 05-12-2011 |
| 20110108953 | FAST RECOVERY DIODE - A fast recovery diode includes an n-doped base layer having a cathode side and an anode side opposite the cathode side. A p-doped anode layer is arranged on the anode side. The anode layer has a doping profile and includes at least two sublayers. A first one of the sublayers has a first maximum doping concentration, which is between 2*10 | 05-12-2011 |
| 20110108941 | FAST RECOVERY DIODE - A fast recovery diode includes a base layer of a first conductivity type. The base layer has a cathode side and an anode side opposite the cathode side. An anode buffer layer of a second conductivity type having a first depth and a first maximum doping concentration is arranged on the anode side. An anode contact layer of the second conductivity type having a second depth, which is lower than the first depth, and a second maximum doping concentration, which is higher than the first maximum doping concentration, is also arranged on the anode side. A space charge region of the anode junction at a breakdown voltage is located in a third depth between the first and second depths. A defect layer with a defect peak is arranged between the second and third depths. | 05-12-2011 |
| 20110103116 | PLANT FOR TRANSMITTING ELECTRIC POWER - A plant for transmitting electric power comprising a direct voltage network ( | 05-05-2011 |
| 20110103115 | VOLTAGE SOURCE CONVERTER - A Voltage Source Converter having at least one phase leg connected to opposite poles of a direct voltage side of the converter and comprising a series connection of switching cells has inductance means comprising a plurality of inductors ( | 05-05-2011 |
| 20110102368 | FIELD DEVICE - A field device includes a control device whose sensitive control surfaces are sampled capacitively. The control surfaces are arranged on an outside surface of a glass pane. The outside surface of the glass pane can be equipped with a hydrophobic nanocoating in front of the control surfaces of the field device, for protection against weather-dependent control errors, for example. | 05-05-2011 |
| 20110101999 | METHOD, CAPACITANCE METER, COMPUTER PROGRAM AND COMPUTER PROGRAM PRODUCT FOR IMPROVED CAPACITANCE MEASUREMENT - A method for measuring a capacitance using a capacitance meter. The capacitance meter includes an AC power source with a controllable frequency which is fed to a capacitor to measure its capacitance. A first measurement of the capacitance is performed by the capacitance meter using a first frequency. When the first measurement of the capacitance indicates the capacitance is below a threshold capacitance a lower capacitance measurement is performed in the capacitance meter, using a second measurement of the capacitance using a second frequency. When the first measurement of the capacitance indicates the capacitance is above a threshold capacitance, a higher capacitance measurement is performed in the capacitance meter, using a second measurement of the capacitance using a third frequency, the third frequency being lower than the second frequency. | 05-05-2011 |
| 20110096575 | PLANT FOR TRANSMITTING ELECTRIC POWER - A plant for transmitting electric power through HVDC comprises two converter stations interconnected by a bipolar direct voltage network and each connected to an alternating voltage network. Each converter station has a Voltage Source Converter with switching cells each including at least one energy storing capacitor. The Voltage Source Converters are configured to utilize a direct voltage having a higher magnitude for a first of the poles than for a second thereof with respect to ground. | 04-28-2011 |
| 20110089933 | COMBINED ELECTRICAL MEASUREMENT DEVICE - A combined measurement device for measuring current and/or voltage of an electrical conductor, comprising a supporting body, a current sensor housed inside the supporting body, and a voltage sensor located at least partially inside the supporting body. A shielding is positioned around the current sensor. The current sensor and the voltage sensor are mutually arranged so as the shielding shields at least partially both the current sensor and the voltage sensor against external electric field disturbances. | 04-21-2011 |
| 20110084048 | CIRCUIT BREAKER WITH PARALLEL RATED CURRENT PATHS - A circuit breaker is provided which can be filled with a quenching gas and which has two contact arrangements, which can be moved relative to one another and along a longitudinal axis of the circuit breaker. The contact arrangements form a arcing contact system and a rated current contact system connected electrically in parallel with it. One of the contact arrangements includes inner rated current contacts and outer rated current contacts of the rated current contact system, where the inner rated current contacts overhang the outer rated current contacts in the direction of the longitudinal axis, and the outer rated current contacts coaxially surround the inner rated current contacts. The circuit breaker has a high current carrying capability as well as a reliable switching-on and -off behavior, such as during and after the occurrence of a short-circuit current in the circuit breaker. | 04-14-2011 |
| 20110080758 | PLANT FOR TRANSMITTING ELECTRIC POWER - A plant for transmitting electric power comprises a direct voltage network for High Voltage Direct Current and at least one alternating voltage network connected thereto through a station. The station comprises at least one Voltage Source Converter adapted to convert direct voltage into alternating voltage and conversely. In the direct voltage network at least one parallel connection of at least one semiconductor device of turn-off type and a resistor is connected in series with a direct voltage line of the direct voltage network. | 04-07-2011 |
| 20110080679 | PROTECTING APPARATUS - An apparatus for protecting equipment connected to a high voltage direct current line comprises a current valve having at least one semiconductor device and a rectifying member connected in anti-parallel therewith. A surge arrester is configured to connect said current valve to said line, and a control unit is configured to control the current valve to conduct for draining current from the line to ground. | 04-07-2011 |
| 20110079755 | HIGH FIELD STRENGTH VARISTOR MATERIAL - The present invention relates to a varistor material for a surge arrester with target switching field strength ranging from 250 to 400 V/mm comprising ZnO forming a ZnO phase and Bi expressed as Bi | 04-07-2011 |
| 20110078357 | MEDIUM VOLTAGE SWITCH UNIT - A medium voltage switch unit comprising an interruption unit and a disconnection unit, wherein the interruption unit comprises a first and a second interruption contact and a first drive unit which moves one of said interruption contacts between a first position in which they are in electrical connection and a second position in which they are spaced apart. The disconnection unit comprises a first and a second fixed disconnection contacts couplable and uncouplable with respective first and second movable disconnection contacts mounted on the interruption unit and electrically connected to the first interruption contact. The interruption unit is mechanically supported by a first fixed conductor and the second interruption contact is electrically connected to said first fixed conductor. The disconnection unit comprises a second drive unit which moves the interruption unit, relative to said first conductor, between: a first disconnector position in which the first movable disconnection contact and the first fixed disconnection contact are coupled while the second movable disconnection contact is isolated from said second fixed disconnection contact; a second disconnector position in which the first and second movable disconnection contacts are isolated from the first and second fixed disconnection contacts; and a third disconnector position in which the second movable disconnection contact and the second fixed disconnection contact are coupled while the first movable disconnection contact is isolated from said first fixed disconnection contact. | 03-31-2011 |
| 20110069517 | ARRANGEMENT FOR VOLTAGE CONVERSION - An arrangement for converting direct voltage into alternating voltage and conversely has a Voltage Source Converter with at least one phase leg connected to opposite poles ( | 03-24-2011 |
| 20110068811 | CAPACITANCE METER, METHOD, COMPUTER PROGRAM AND COMPUTER PROGRAM PRODUCT FOR IMPROVED CAPACITANCE MEASUREMENT - A capacitance meter including an AC source providing a measurement voltage with a measurement frequency to a capacitor. A current sensor is arranged to measure a current going to or from the capacitance meter. A voltage sensor is arranged to measure a voltage over the capacitor. A capacitance calculation unit is arranged to calculate, using a controller, a capacitance of the capacitor using a measured current from the current sensor, a measured voltage from the voltage sensor and the measurement frequency. The capacitance meter is arranged to obtain measurements using the current sensor and the voltage sensor during a measurement duration. The measurement frequency and the measurement duration are selected such that the measurement duration equals a multiple of the period of the measurement frequency, and the measurement duration equals a multiple of the period of a mains electricity. | 03-24-2011 |
| 20110068635 | MEDIUM OR HIGH VOLTAGE SWITCHGEAR APPARATUS AND METHOD OF EARTHING - A method of earthing two current inlet/outlet systems in a medium or high voltage switchgear using one circuit breaker comprises the following steps: a) switching OFF the circuit breaker; b) connecting the circuit breaker to the first current inlet/outlet system as well as to the earthing; c) switching the circuit breaker ON; d) providing a direct connection between the first current inlet/outlet system and the earthing via a connecting element; e) switching the circuit breaker OFF; f) disconnecting the circuit breaker at least from the first current inlet/outlet system; g) connecting the circuit breaker to the second current inlet/outlet system and to the earthing; and h) switching the circuit breaker ON. A switchgear apparatus to be used for said method is described as well. | 03-24-2011 |
| 20110063062 | DISC WOUND TRANSFORMER WITH IMPROVED COOLING - A method of manufacturing a transformer that includes forming a disc-wound coil using a plurality of pre-formed cooling ducts. Each cooling duct may be supported by a support pipe secured between walls of the cooling duct, or by a removable insert. First and second conductor layers are formed, each of which include plurality of disc windings arranged in an axial direction of the disc-wound coil. A spacer layer is formed between the first and second conductor layers to form a plurality of axially-extending passages. The cooling ducts are slid into the axially-extending passages so as to be disposed between the first and second conductor layers. | 03-17-2011 |
| 20110062116 | SELF-BLOWOUT CIRCUIT BREAKER HAVING A FILLING AND OVERPRESSURE VALVE - 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. | 03-17-2011 |
| 20110056916 | Vaccum Switch Chamber with a Protective Sleeve that is Applied by Heat Shrinking - A resin-encapsulated pole piece is provided and includes a vacuum interrupter chamber having an outer surface. A protective sheath covers the outer surface of the vacuum interrupter chamber. The protective sheath is composed of a heat-shrinkable material. The protective sheath has been pulled over the vacuum interrupter chamber and then heat shrunk so as to be in firm contact with the outer surface of the vacuum interrupter. An outer casing encapsulates the vacuum chamber covered by the protective sheath. The outer casing is composed of a cast epoxy resin and is in contact with the protective sheath. | 03-10-2011 |
| 20110056819 | MODULAR TEST SWITCH - A modular test switch assembly includes a plurality of stackable features that may be arranged in a variety of configurations. Each module includes a test switch and includes features to engage adjoining modules in the assembly. The entire test switch assembly is secured together using a retaining rod that is inserted through aligned thru-holes in the assembly. | 03-10-2011 |
| 20110052187 | TIME DIVISION MULTIPLEXED DETECTOR FOR A MAGNETO-OPTICAL CURRENT TRANSDUCER - A system monitors alternating current and includes a magneto-optical current transducer (MOCT) adapted to modulate an optical signal corresponding to magnitude of the alternating current. Beam splitters are in communication with the MOCT which are in turn connected to respective channels. Each channel includes an LED that is powered by a constant current source. | 03-03-2011 |
| 20110047264 | ANALYZING A COMMUNICATION PERFORMANCE OF AN IED - A communication stack performance of an Intelligent Electronic Device (IED) is analyzed in a communication network of a Substation Automation (SA) system. The IED processes network messages that are transferred with, or belonging to, a specific configurable SA communication service. A plurality of application level scenarios corresponding to a high communication load is executed. Among all network messages captured or intercepted during the scenario, the network messages destined to the IED and sent by the IED in response are identified. A number of the identified messages, a number of specific communication protocol elements or data items related to a service-specific property, and a number of changed protocol elements, which are indicative of an SA event, for which the value of the data item has changed compared to the value of the same data item in a previous message, are determined. An IED-intrinsic processing time of the identified messages is likewise determined, based on which parameter values of a service specific processing time model are calculated. | 02-24-2011 |
| 20110037765 | METHOD FOR DISPLAYING CHANGES IN PARAMETER VALUES - The disclosure relates to a method and apparatus for displaying changes in parameter values on a display surface. Two successive sampled values (P | 02-17-2011 |
| 20110035173 | METHOD FOR INCREASING THE AVAILABILITY OF DISPLACEMENT/POSITION MEASURING SYSTEMS ON THE BASIS OF POTENTIOMETERS WITH A SLIDER TAP - The disclosure relates to a method for increasing the availability of displacement/position measuring systems on the basis of potentiometers with a slider tap in a closed control loop, the controller of which is formed by a microcontroller which is supplied with the position of the slider via an analog/digital converter. At least part of the sensor range of the potentiometer is scanned on request by presetting a sequence of manipulated variables and an available control loop variable which represents the position value at a high sampling rate outside process tasks is recorded, to determine the exact position of a defective slider position of the potentiometer by evaluating the variable. The reference variable of the control loop is overloaded in a defined manner within the process task such that the defective slider position is passed over during the displacement/position measurement and an intact slider position is reached. | 02-10-2011 |
| 20110032739 | METHOD AND DEVICE TO COMPENSATE FOR AN ASYMMETRICAL DC BIAS CURRENT IN A POWER TRANSFORMER CONNECTED TO A HIGH VOLTAGE CONVERTER - A method and a device to compensate for an asymmetrical DC bias current in a multi-phase transformer. The transformer is connected between an AC power system and an AC/DC or DC/AC high voltage converter. For each phase of the AC side of the transformer a current quantity is determined. The current quantity reflects the time dependent behaviour of the magnetizing current in the phase. Time intervals in the current quantity are determined during which the current quantity reaches a positive or a negative maximum, respectively. A DC magnetizing quantity is determined from a difference between the amplitude of the positive maximum and the amplitude of the negative maximum. An asymmetrical quantity is determined from a difference between the amplitudes of the positive and/or negative maxima of at least two of the phases and a control signal is generated from the asymmetrical quantity and provided to a control device of the converter in order to adjust the generation of the AC or DC voltage in the particular phase of the converter which corresponds to the phase of the AC side of the transformer. | 02-10-2011 |
| 20110032064 | METHOD FOR PRODUCTION OF A WINDING BLOCK FOR A COIL OF A TRANSFORMER AND WINDING BLOCK PRODUCED IN THIS WAY - A method is disclosed for production of a winding block for a coil of a transformer, having at least one winding composed of electrically conductive wire or strip material with a plurality of turns. An insulating layer is composed of electrically insulating fiber material with a specific number of windings of the insulating fiber material. The turns composed of electrical conductive material are fitted independently of the turns of the insulating material and, after a predetermined number of turns of electrically conductive material have been fitted, a smaller number of turns of electrically insulating material are fitted over the same section onto these turns of electrically conductive material, such that electrically insulating material which remains before reaching a number of turns of electrically conductive material is used as edge insulation. | 02-10-2011 |
| 20110031095 | MEDIUM VOLTAGE CIRCUIT BREAKER WITH INTEGRATED ELECTRONIC PROTECTION UNIT - A Medium Voltage Circuit Breaker (CB) comprising an electronic protection and control unit having: | 02-10-2011 |
| 20110030994 | HIGH-VOLTAGE INSULATOR - A high-voltage insulator includes a metal armature, an insulating tube joined to the metal armature, which is adhesively bonded to the metal armature at an end formed as a supporting ring, and an axially symmetrical adhesive-bonding joint disposed around the axis of the insulating tube. An annular grove, which is formed in the metal armature, is disposed around the axis of the insulating tube and receives an end portion of the supporting ring. Sealing surfaces are respectively formed in the groove and in the supporting ring. The sealing surfaces are arranged and formed in such a way that, when the insulating tube and the metal armature are joined, they slide on one another, thereby forming a seal, and the supporting ring acting as a displacement body presses adhesive that has been introduced into the groove before the joining into the adhesive-bonding joint. | 02-10-2011 |
| 20110029582 | METHOD AND DEVICE FOR STORING DATA BELONGING TO AN ALARM OR EVENT MESSAGE CONTAINING MULTIPLE ATTRIBUTES - The disclosure relates to a method and to a corresponding device for storing data belonging to an alarm or event message containing multiple attributes. A fixed table directly stores a first part of the attributes belonging to an alarm or event message in a standardized manner. Additionally, both the first part and a remaining second part of the attributes are stored as an availability dataset. | 02-03-2011 |
| 20110029149 | DETERMINING A BUS BAR VOLTAGE - A Substation Automation (SA) system in high or medium voltage power networks is provided for determining a bus bar voltage at a first node. The disclosure replaces a ‘real’ voltage transformer with an intelligent electronic device (IED) and/or a ‘virtual’ voltage transformer (VT), which determines the bus bar voltage at the first node from a first bay connected to the first node. The IED receives network message from a second IED of the SA system, indicating the bay voltage of the first bay connected to the first node. The IED also receives switch status of the switching device arranged between the first bay and the first node, from a third IED. Depending upon the switch status, the IED establishes the bay voltage as the bus bar voltage at the first node. | 02-03-2011 |
| 20110028031 | MODULAR TEST PLUG - A modular test plug assembly is disclosed having a design which may be arranged in a plurality of different configurations. The test plug assembly includes a plurality of modules, having blades for insertion into a test switch assembly. The modules are positioned in a stacked arrangement and are secured together by end plates and a rod extending therebetween. | 02-03-2011 |
| 20110025447 | HIGH VOLTAGE DRY-TYPE REACTOR FOR A VOLTAGE SOURCE CONVERTER - A high voltage dry-type reactor is series-connected via a first terminal to an AC supply voltage and via a second terminal to the AC phase terminal of a high voltage converter and includes a cylindrical coil of insulated wire. In order to protect the reactor from a damaging DC field, the reactor further includes a metallic or resistive electrostatic shield which is connected to a same DC potential as the converter. | 02-03-2011 |
| 20110025353 | METHOD FOR INCREASING THE AVAILABILITY OF DISPLACEMENT/POSITION MEASURING SYSTEMS ON THE BASIS OF POTENTIOMETERS WITH A SLIDER TAP - The disclosure relates to a method for increasing the availability of displacement/position measuring systems on the basis of potentiometers with a slider tap in a closed control loop, the controller of which is formed by a microcontroller which is supplied with the position of the slider via an analog/digital converter. The position of a defective slider position of the potentiometer is determined within the active process task by evaluating an available control loop variable, and the reference variable of the control loop is overloaded in a defined manner such that the defective slider position is passed over during the displacement/position measurement and an intact slider position is reached. | 02-03-2011 |
| 20110022894 | METHOD AND SYSTEM FOR DETERMINING AN INDIVIDUAL FAILURE RATE FOR THE EVALUATION OF AN INDIVIDUAL COMPLEX TECHNICAL OPERATING EQUIPMENT - A method and a system are disclosed for determining an individual failure rate for at least one individual technical operating equipment. For the calculation, a data processing unit receives not only the statistical data and characteristics specific for the type of the technical operating equipment, but also valid characteristic data for the individual technical operating equipment are used. Furthermore, additional characteristic values are used that are derived from information about influences by the site of use and the mode of operation of the individual technical operating equipment in an industrial plant. On the basis of the operating equipment type-specific data, an individualized average failure rate can be formed. Characteristic values associated with the individual operating equipment are used for forming a correcting factor. By linking the average failure rate to the correction factor, the individual failure rate is calculated. | 01-27-2011 |
| 20110015792 | METHOD FOR IDENTIFICATION OF PNEUMATIC DRIVES - The disclosure relates to a system and method for identification of pneumatic drives. The pneumatic actuating drive is controlled by an electro-pneumatic position regulator, which is equipped with a microcontroller, at least one electro-pneumatic transducer for controlling the pressure-medium flow to and from the drive, and a communication interface. After the position regulator has been started up with an initial setting, a nominal value profile and an actual value profile can be analyzed during operation and, if a control error exceeds a predeterminable minimum value, the manipulated variable from the position regulator can be temporarily replaced by a test signal during which operating parameters of the controlled system are recorded from which current regulator parameters are determined. | 01-20-2011 |
| 20110010475 | METHOD AND DEVICE FOR LOGGING PROCESS VARIABLES OF A DIGITAL FIELD DEVICE - A method and an electronic device are provided for logging process variables of a bus-controlled automation system in which process variables which are relevant to evaluation are buffered in at least one digital field device and are subsequently read, for the purpose of evaluation, by a central computer unit which is connected to the field device via a data bus. Process variable values which are relevant to evaluation are buffered in the field device in the form of a message, a plurality of equidistantly successive process variable values are recorded as messages, where the first process variable value is assigned a time stamp recorded for each message, and further process variable values are stored in further identical messages. | 01-13-2011 |
| 20110005809 | INSULATION SPACER FOR A GAS INSULATED DEVICE AND METHOD OF PRODUCING SAME - An insulation spacer for a gas insulated device includes an insulator disc and an armature extending around an outer periphery of the insulator disc and holding the same. The armature is ring-shaped defining a ring axis and includes two ring base surfaces extending substantially perpendicularly to the ring axis; and a ring inner surface being arranged between the two ring base surfaces and facing the ring axis. Further, the ring inner surface includes at least one protrusion directed radially inwardly towards the ring axis, the at least one protrusion being shaped such that it locks the insulator disc in the armature against movement in both directions parallel to the ring axis. | 01-13-2011 |
| 20110001600 | TWO- OR MULTIPHASE TRANSFORMER - The disclosure relates to a transformer having a yoke which has a crosspiece and at least two limbs, over which limbs a coil is placed in each case, and having at least one carrier on which the crosspiece is fixed and which has bearing faces for the coils. At least two supporting blocks for each coil are mounted on each bearing surface. The supporting blocks are fitted with elastic compensation elements on the coil-side carrying face and have, on their longitudinal side faces, which run perpendicular to a carrying surface, at least one strip which extends the creepage path and runs in the longitudinal direction and parallel to the carrying surface of the supporting block. | 01-06-2011 |
| 20110000771 | THREE-POSITIONS DISCONNECTOR FOR MEDIUM VOLTAGE PANELS - A three-positions disconnector comprising, for each phase an insulating casing which comprises a first and a second cavity separated by an insulated partition wall, a through hole being present in said partition wall between said first and second cavity. The first cavity houses: a first fixed contact electrically connected to a corresponding branch conductor (of a bus-bar system; at least a portion of a movable contact pivotally mounted on a support positioned in the first cavity and electrically connected to a first electrical terminal positioned in said second cavity. The disconnector further comprises, for each phase, a second fixed contact suitable for ground connection. Also, the disconnector comprises an operating mechanism and a kinematical chain linking the movable contact with the operating mechanism; the movable contact is movable between a first position in which it is coupled to the first fixed contact, a second position in which it is isolated from both the first and second fixed contacts, and a third position in which it coupled to the second fixed contact. | 01-06-2011 |
| 20110000769 | REVERSING AND A METHOD OF MODIFYING A TAP CHANGER TO USE THE SAME - A reversing switch for a tap changer of a transformer is provided. The reversing switch includes first and second contact structures for connection to a winding of the transformer and a mounting structure for connection to a neutral terminal of the transformer. A bus bar connects a third contact structure to the mounting structure. A movable contact arm is secured to a rotatable post. The contact arm includes a contact assembly mounted to an arm. The contact assembly has one or more outward contacts and one or more inward contacts. The one or more inward contacts engage the third contact structure and the one or more outward contacts selectively engage the first contact structure or the second contact structure. The first and second contact structures and the mounting structure are located at about the same radial distance from the post, while the third contact structure is located closer to the post. | 01-06-2011 |
| 20100328977 | METHOD FOR CONTROLLING A VOLTAGE SOURCE CONVERTER AND A VOLTAGE CONVERTING APPARATUS - In a method for controlling a Voltage Source Converter having at least one phase leg comprising a series connection of switching elements, in which each said element has at least two semiconductor devices of turn-off type, at least two free-wheeling diodes connected in parallel therewith and at least one energy storing capacitor, each said switching element is controlled according to a Pulse Width Modulation pattern so that each switching element is switched to change between applying a zero voltage and the voltage across its capacitor across its terminals each time a saw tooth voltage wave for that switching element crosses a reference alternating voltage belonging to that switching element. | 12-30-2010 |
| 20100328008 | DISC WINDING - A disc winding of a power transformer or a choke is provided. The disc winding includes a plurality of parallel single strand conductors. The working time for bending the strand conductors of cross-overs is reduced by sharing the winding axially in plurality of sections, and the cross-overs within a section are identical twin cross-overs. The the strand conductors are bent in two groups, and a standardized twin transposition cross-over is provided between the sections such that the strand conductors are being bent in two groups. The outermost strand conductor is in the first group, and the remaining strand conductors are in the other group. | 12-30-2010 |
| 20100328005 | DRY TYPE TRANSFORMER WITH IMPROVED COOLING - A distribution transformer having a coil assembly mounted to a ferromagnetic core. The coil assembly includes a resin-encapsulated low voltage coil mounted to the core, a resin-encapsulated first high voltage coil disposed around the low voltage coil, and a resin encapsulated second high voltage coil disposed around the first high voltage coil. The first high voltage coil is separated from the low voltage coil by an annular first space, and the second high voltage coil is separated from the first high voltage coil by an annular second space. The low voltage coil and the first and second high voltage coils are arranged concentrically. The low voltage coil and the first and second high voltage coils have different axial lengths. | 12-30-2010 |
| 20100325304 | INTER-BAY SUBSTATION AUTOMATION APPLICATION - The present disclosure is directed to an exemplary interface description or structure of an inter-bay Substation Automation (SA) application. The interface of the application to other elements of the SA system, for example to a bay controller, IED, OPC server, HMI, and/or gateway, is examined to fully automate the inter-bay SA application configuration and implementation. A formal description or structure of the base SA system as for example, including an IEC 61850 SCD file can be used to generate a formal description of the interfaces of the inter-bay SA application to be engineered. Logical nodes can be connected to the process single line diagram and integrated into the SCD file of the base SA system, thereby generating an enhanced SCD file. | 12-23-2010 |
| 20100319592 | System and Method for Full Combustion Optimization For Pulverized Coal-Fired Steam Boilers - A method and system for controlling a pulverized coal fired boiler wherein the flow of a coal/air mixture flowing to each burner is monitored and transmitted to a distributed control system. The distributed control system also monitors and controls the position of dampers in a splitter that feeds the coal/air mixture to the burners. The dampers are controlled in a closed loop fashion to achieve a optimal boiler performance. | 12-23-2010 |
| 20100309698 | VOLTAGE SOURCE CONVERTER FOR HIGH VOLTAGE DIRECT CURRENT POWER TRANSMISSION - A high voltage AC/DC or DC/AC power conversion system including a voltage source converter with at least two series-connected converter valve bridges, at least two reactors, where each of the reactors is connected to one of the AC phase terminals of the at least two bridges and at least one transformer connected to an AC supply voltage. In order to block a DC voltage from the at least one transformer, one of at least two capacitors is connected in series with each of the at least two reactors and is connected between the corresponding reactor and the at least one transformer. | 12-09-2010 |
| 20100309596 | CONTROL OF OPERATION OF PROTECTION RELAY - A method of controlling a protection relay, includes inputting an input characteristic quantity and determining a triggering condition for the protection relay using a calculation equation, the value of which increases when the input characteristic quantity exceeds a first threshold value, and decreases when the input characteristic quantity undershoots a second threshold value for an over-function measure, and the value of the calculation equation increases when the input characteristic quantity undershoots a first threshold value, and decreases when the input characteristic quantity exceeds a second threshold value for an under function measure, wherein the calculation equation includes a first measure and a second measure, and the triggering occurs when the first measure is greater than the second measure. | 12-09-2010 |
| 20100305874 | ELECTRONIC WEAR STATE DETERMINATION IN A VALVE ARRANGEMENT - A method is provided for determining the electronic wear state of a valve arrangement for controlling a process medium flow. A valve element is arranged to move axially within a valve housing, is reset by a spring, and is moved by application of control pressure via an I/P converter. The I/P converter ensures a constant opening cross section at least over a portion of the switching stroke, in the case of which the time at which various positions of the valve element along the ventilating and/or venting distance are reached is determined by means of a position sensor system, and this time is used to mathematically derive the speeds of the valve element prevailing at these positions by means of an evaluation unit. The change profile of the speeds represents a measure of the wear state of the valve mechanism. | 12-02-2010 |
| 20100301384 | DIODE - A diode for fast switching applications includes a base layer of a first conductivity type with a first main side and a second main side opposite the first main side, an anode layer of a second conductivity type, which is arranged on the second main side, a plurality of first zones of the first conductivity type with a higher doping concentration than the base layer, and a plurality of second zones of the second conductivity type. The first and second zones are arranged alternately on the first main side. A cathode electrode is arranged on top of the first and second zones on the side of the zones which lies opposite the base layer, and a anode electrode is arranged on top of the anode layer on the side of the anode layer which lies opposite the base layer. The base layer includes a first sublayer, which is formed by the second main sided part of the base layer, and a second sublayer, which is formed by the first main sided part of the base layer. A third layer of the first conductivity type is arranged between the first and second sublayers. The third layer has a higher doping concentration than the base layer and a lower doping concentration than the first zones. | 12-02-2010 |
| 20100300852 | LOW-VOLTAGE, MEDIUM-VOLTAGE OR HIGH-VOLTAGE SWITCHGEAR ASSEMBLY WITH AT LEAST ONE MOVEABLE CONTACT - An exemplary switchgear assembly is disclosed with at least one moveable contact piece, in which the moveable contact is connected to a connection piece electrically with a flexible connection means. A connection between the connector strip and the connection piece of the pole part is provided. The connection can have relatively low electrical and thermal resistance. A flexible connection means is connected to the connection piece directly or with an intermediate piece, which can be connected to the connection piece, cohesively or at least unreleasably. | 12-02-2010 |
| 20100296221 | PROTECTIVE RELAY AND HUMAN-MACHINE INTERFACE THEREFOR - A fully operational digital protective relay or Intelligent Electronic Device (IED) are provided for protecting electrical equipment of a power distribution system. The relay includes an input module, a processing module and an output module. Signals received from current transformers connected to the input module are evaluated by the processing module, and in reaction thereto, trip signals can be output to an actuator of a circuit breaker via the output module. A base Human Machine Interface (HMI) enables a user to enter operating parameters such as a delay time or nominal current to the processing module. Optionally, a further HMI may be attached to the protective relay and connected, via a suitable interface for data exchange, to the processing module for the purpose of displaying protection-related information to a user. This further HMI is both optional and detachable. For example, the further HMI can be repeatedly attached to and detached from the protection device. The detachable HMI provides for an increased flexibility in the use of the protective relay, as a user may adapt its interfacing capability by acquiring a detachable HMI of the type and at the time that best suits his evolving needs. | 11-25-2010 |
| 20100295093 | REVERSE-CONDUCTING SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SUCH A REVERSE-CONDUCTING SEMICONDUCTOR DEVICE - A method for manufacturing a reverse-conducting semiconductor device (RC-IGBT) with a seventh layer formed as a gate electrode and a first electrical contact on a emitter side and a second electrical contact on a collector side, which is opposite the emitter side, a wafer of a first conductivity type with a first side and a second side opposite the first side is provided. For the manufacturing of the RC-IGBT on the collector side, a first layer of the first conductivity type or of a second conductivity type is created on the second side. A mask with an opening is created on the first layer and those parts of the first layer, on which the opening of the mask is arranged, are removed. The remaining parts of the first layer form a third layer. Afterwards, for the manufacturing of a second layer of a different conductivity type than the third layer, ions are implanted into the wafer on the second side into those parts of the wafer, on which the at least one opening is arranged. Then the mask is removed and an annealing for the activation of the second layer is performed and a second electrical contact, which is in direct electrical contact to the second and third layer, is created on the second side. | 11-25-2010 |
| 20100294965 | POSITION REGULATOR - An exemplary position regulator is disclosed which includes a regulation unit and a travel measurement system for activating an actuating drive for adjusting a control fitting to a predetermined position. A signal shaper is provided for outputting a travel signal to a superordinate device. To provide an undisturbed output of the travel signal, the signal shaper is connected in series in a transmission path between the travel measurement system and the regulation unit, and is connected in parallel with the regulation unit so as to transmit signals. The signal shaper can have a switch which is controlled by an alarm signal of the regulation unit, by which, in a first (e.g., inoperative) position, the travel measurement system is fed from the regulation unit, and, in a second (e.g., operative) position, the travel measurement system is fed from the signal shaper. The signal shaper can be automatically calibrated when the position regulator is activated, by comparing an output signal from the travel measurement system with a travel signal which is received by the regulation unit. | 11-25-2010 |
| 20100294562 | ELECTRICAL CONDUCTOR FOR A HIGH-CURRENT BUSHING - An electrical conductor carries a rated current in a high-current bushing of a transformer. The electrical conductor includes a conductor piece which extends along an axis and has a cylindrical envelope surface, a first electrical connection, and a second electrical connection. The first electrical connection has two contact surfaces which are aligned parallel to one another. Electrical losses of the electrical conductor are kept low, with a compact design. This is achieved, in part, because the second electrical connection is connected without a joint to the conductor piece, and the first electrical connection is hollow and, at right angles to the axis, has an oval profile with two longitudinal faces which form the two contact surfaces. In addition, a hollow electrical conductor section is arranged between the first electrical connection and the conductor piece, connects the first electrical connection to the conductor piece, and forms a smooth transition from the two contact surfaces of the first electrical connection to the envelope surface of the conductor piece. | 11-25-2010 |
| 20100289638 | METHOD AND DEVICE FOR IDENTIFICATION OF CORRELATIONS BETWEEN ALARM MESSAGES OR BETWEEN ALARM MESSAGES AND OPERATOR ACTIONS - The disclosure relates to a method and device for identification of correlations between alarm messages in an alarm system of a technical installation or a technical process and/or correlations between such alarm messages and operator actions, using a data processing device which has access to recorded historical data which relates to alarm messages and operator actions. The data processing device can use market basket analysis methods to deal with and analyze historical data, which occurs at defined intervals, as a market basket. Quality characteristics can be formed from a relationship between respective operator actions before and after an occurrence of a respective alarm message, and/or from correlations between alarm messages and operator actions, via the data processing device, which has access to the recorded historical data which relates to alarm messages and operator actions. | 11-18-2010 |
| 20100289551 | INCREASED RELIABILITY IN THE PROCESSING OF DIGITAL SIGNALS - A method, device and computer program product for providing increased reliability in the processing of digital signals. The device includes a module for performing analog measurement of a received signal intended to occupy two logical states at various instances in time, a module for determining if there is a change in the analog signal level, a module for determining if the change fulfills at least one logical state change condition, wherein a first logical state change condition is based on the speed of change of the analog signal level, and a module for determining that there is a change from one logical state to the other if at least one logical state change condition is fulfilled. The invention provides secure detection of unreliable digital signals that may be generated in harsh environments that are polluted or moist. | 11-18-2010 |
| 20100282583 | SIGNALING DEVICE FOR CIRCUIT BREAKER AND ELECTRICAL APPARATUS COMPRISING THE SIGNALING DEVICE - A signaling device having an electrical switch configured to generate an electrical signal indicating a transition of an associated circuit breaker from a first state to a second state. A movable body is pivotally mounted around a first axis (101) so as to interact with the actuating mechanism. A return spring is operatively connected to the pivoting body (3) and is mounted around an axis substantially parallel to said first axis. | 11-11-2010 |
| 20100276727 | REVERSE-CONDUCTING SEMICONDUCTOR DEVICE - A reverse-conducting semiconductor device is disclosed with an electrically active region, which includes a freewheeling diode and an insulated gate bipolar transistor on a common wafer. Part of the wafer forms a base layer with a base layer thickness. A first layer of a first conductivity type with at least one first region and a second layer of a second conductivity type with at least one second and third region are alternately arranged on the collector side. Each region has a region area with a region width surrounded by a region border. The RC-IGBT can be configured such that the following exemplary geometrical rules are fulfilled: each third region area is an area, in which any two first regions have a distance bigger (i.e., larger) than two times the base layer thickness; the at least one second region is that part of the second layer, which is not the at least one third region; the at least one third region is arranged in the central part of the active region in such a way that there is a minimum distance between the third region border to the active region border of at least once the base layer thickness; the sum of the areas of the at least one third region is between 10 and 30% of the active region; and each first region width is smaller than the base layer thickness. | 11-04-2010 |
| 20100271794 | HARDWARE MODULE AND BACKPLANE BOARD FOR AN IED - The present disclosure provides a flexible and space-saving arrangement of hardware modules in an Intelligent Electronic Device (IED). A module for an IED is configured to engage a slot or socket of a backplane of the IED in order to communicate, in a point-to-point mode over a serial backplane bus system that encompasses the slot or socket, with two neighboring modules in the IED. The module includes a source selector configured to select, in a receiving mode, between reception of signals transmitted via a nearest neighbor slot, or via a next-nearest neighbor slot. The source selector evaluates signals directed towards a rear side of a circuit board of the module, with the rear side being substantially devoid of electronic components. | 10-28-2010 |
| 20100271166 | COIL BUS TRANSFORMER AND A METHOD OF MANUFACTURING THE SAME - A transformer having high and low voltage coils mounted to legs of a core is provided. Each low voltage coil includes conductor sheeting having opposing first and second ends and opposing first and second side edges. A pair of coil bus bars is provided for each low voltage coil. Each coil bus bar has first and second portions, wherein the first portion has a width that is more than one and a half times greater than a width of the second portion. Each coil bus bar is secured to the conductor sheeting of its low voltage coil such that the first portion of the coil bus bar is disposed at the first side edge of the conductor sheeting and the second portion of the coil bus bar is disposed at the second side edge of the conductor sheeting. | 10-28-2010 |
| 20100270587 | REVERSE-CONDUCTING SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SUCH A REVERSE-CONDUCTING SEMICONDUCTOR DEVICE - A reverse-conducting semiconductor device (RC-IGBT) including a freewheeling diode and an insulated gate bipolar transistor (IGBT), and a method for making the RC-IGBT are provided. A wafer has first and second sides emitter and collector sides of the IGBT, respectively. At least one layer of a first or second conductivity type is created on the second side before at least one layer of a different conductivity type is created on the second side. The at least one layer of the first or second conductivity type and the at least one layer of the different conductivity type are arranged alternately in the finalized RC-IGBT. A second electrical contact, which is in direct electrical contact with the layers of the first or second and different conductivity types, is created on the second side. A shadow mask is applied on the second side, and the layer of the first or second conductivity type is created through the shadow mask. Another layer of the first or second conductivity type can be created on the second side, and a shadow mask is applied on the other layer of the first or second conductivity type, and at least one electrically conductive island, which is part of a second electrical contact in the finalized RC-IGBT, is created through the shadow mask. The electrically conductive island is used as a mask for the creation of the layer of the different conductivity type, and those parts of the other layer of the first conductivity type which are covered by an electrically conductive island form the layer of the first or second conductivity type. | 10-28-2010 |
| 20100270585 | METHOD FOR MANUFACTURING A REVERSE-CONDUCTING INSULATED GATE BIPOLAR TRANSISTOR - A reverse-conducting insulated gate bipolar transistor includes a wafer of first conductivity type with a second layer of a second conductivity type and a third layer of the first conductivity type. A fifth electrically insulating layer partially covers these layers. An electrically conductive fourth layer is electrically insulated from the wafer by the fifth layer. The third through the fifth layers form a first opening above the second layer. A sixth layer of the second conductivity type and a seventh layer of the first conductivity type are arranged alternately in a plane on a second side of the wafer. A ninth layer is formed by implantation of ions through the first opening using the fourth and fifth layers as a first mask. | 10-28-2010 |
| 20100270056 | Breaker with Improved Shipping Configuration - A pole assembly for a three phase breaker includes a center pole and a pair of outer poles positioned on opposed sides of the center pole. A pair of brackets are positioned at opposed ends of the pole, and include a center groove and a pair of outer grooves. The center pole is positioned in the center groove. The outer poles are secured in the outer groove in a shipping configuration and an installed configuration. When in the shipping configuration the bushings of all the poles are parallel. When in the installed configuration the bushings of the outer poles are angled away from the bushings of the center pole. | 10-28-2010 |
| 20100248462 | METHOD FOR MANUFACTURING A POWER SEMICONDUCTOR DEVICE - An exemplary method is disclosed for manufacturing a power semiconductor device which has a first electrical contact on a first main side and a second electrical contact on a second main side opposite the first main side and at least a two-layer structure with layers of different conductivity types, and includes providing an n-doped wafer and creating a surface layer of palladium particles on the first main side. The wafer is irradiated on the first main side with ions. Afterwards, the palladium particles are diffused into the wafer at a temperature of not more than 750° C., by which diffusion a first p-doped layer is created. Then, the first and second electrical contacts are created. At least the irradiation with ions is performed through a mask. | 09-30-2010 |
| 20100246085 | HIGH-VOLTAGE DEVICE - A high-voltage device includes a conducting element for conducting a high-voltage current and at least one transient reducing unit for reducing voltage peaks of existing propagating very fast transients (VFTs) by the generation of arcing. The transient reducing unit has at least one arcing occurrence surface. The at least one arcing occurrence surface of the at least one transient reducing unit is positioned in the vicinity of the conducting element such that arcing occurs between the transient reducing unit and the conducting element when the potential difference between the transient reducing unit and the transient conducting element is above a threshold value, such as at the occurrence of a very fast transient. A method is also provided for equipping a high-voltage device with the transient reducing unit. | 09-30-2010 |
| 20100245017 | PRODUCTION METHOD FOR A MULTI-LAYER TRANSFORMER WINDING HAVING INSULATING LAYER - A method is disclosed for producing a multi-layer transformer winding. During or after the winding of a conductor layer around a winding body, a layer of electrically insulating material can be applied on the radially outer surface thereof. A dry fiber composite can be used as the insulating material. The fiber composite can be bonded into an insulating layer by heating the transformer winding to a composite temperature. | 09-30-2010 |
| 20100244865 | VOLTAGE MEASUREMENTS OF ELECTRICALLY CONDUCTING ELEMENTS IN SYSTEMS FOR CONTROLLING ELECTRICAL PROCESSES - A voltage measurement device for connection to a primary voltage dividing element provided between ground and an electrically conducting element in a system for controlling an electrical process and such a system. The device includes at least one first branch of secondary voltage dividing elements, where the branch is adapted to be connected in parallel with the primary voltage dividing element, and a first measuring unit connected to one of the secondary voltage dividing elements of the first branch and arranged to measure the voltage across this secondary voltage dividing element and provide a first voltage signal corresponding to a voltage of the electrically conducting element. | 09-30-2010 |
| 20100244093 | SEMICONDUCTOR MODULE - A controlled-punch-through semiconductor device with a four-layer structure is disclosed which includes layers of different conductivity types, a collector on a collector side, and an emitter on an emitter side which lies opposite the collector side. The semiconductor device can be produced by a method performed in the following order: producing layers on the emitter side of wafer of a first conductivity type; thinning the wafer on a second side; applying particles of the first conductivity type to the wafer on the collector side for forming a first buffer layer having a first peak doping concentration in a first depth, which is higher than doping of the wafer; applying particles of a second conductivity type to the wafer on the second side for forming a collector layer on the collector side; and forming a collector metallization on the second side. At any stage particles of the first conductivity type can be applied to the wafer on the second side for forming a second buffer layer with a second peak doping concentration lower than the first peak doping concentration of the first buffer layer, but higher than the doping of the wafer. A third buffer layer can be arranged between the first depth and the second depth with a doping concentration which is lower than the second peak doping concentration of the second buffer layer. Thermal treatment can be used for forming the first buffer layer, the second buffer layer and/or the collector layer. | 09-30-2010 |
| 20100243927 | VALVE ARRANGEMENT - A valve system for activating a piston of a piston-cylinder arrangement for a hydraulic or fluid device includes a pilot control valve including 3/2-way valve and a main valve arrangement having a first and a second main valve. The first and second main valves include 2/2-way valves, wherein in a first position the pilot-control valve is configured to move the first main valve into an open position so as to direct a path for a high pressure fluid to a space above the piston, and wherein in a second position the pilot-control valve is configured to connect the space to a low-pressure tank so as to relieve a pressure in the space above the piston via the second main valve, and wherein the pilot-control valve is configured to open the second main valve and configured to close the first main valve. | 09-30-2010 |
| 20100237856 | ARRANGEMENT FOR CONTACTLESSLY MEASURING A POSITION USING A MAGNETORESISTIVE SENSOR, AND METHOD FOR OPERATING THE ARRANGEMENT - The disclosure relates to an arrangement for contactlessly measuring a position using a magnetoresistive sensor, the displacement-proportional transfer characteristic of which has a plurality of ranges which are suitable for a position measurement and associated characteristic curve sections of which have both positive and negative gradients. The arrangement can be included in a position regulator which has control electronics which, with the aid of a microcontroller, receive one or more input signals and output actuating signals for controlling the actuating drive. A method is also disclosed for operating the arrangement. For example, to uniquely associate the direction of movement of the displacement pick-off shaft with the effective direction of the drive, at least one range sensor for detecting the characteristic curve range of the magnetoresistive measuring system, which is in the form of a magnetoresistor potentiometer, in which the position is measured, is proposed. The range sensor can be connected to the control electronics. The activity of each range sensor can be assigned a sign for the gradient of the characteristic curve section of the measuring system in which the position is measured, which sign can be used to infer the effective direction of the actuating drive. | 09-23-2010 |
| 20100236905 | ELECTRIC SWITCHGEAR - An electric switchgear comprising a casing having at least one compartment provided with a door, a plurality of electrical conductors suitable to be connected to a load, a multi-phase switching device which is mounted on a truck movable inside the compartment between a connected position wherein each phase of the switching device is electrically connected to a corresponding electrical conductor and a withdrawn position wherein each phase of the switching device is electrically separated from the corresponding electrical conductor, and a mechanism adapted for stopping the switching device in a position intermediate between the connected position and the withdrawn position. | 09-23-2010 |
| 20100236904 | ELECTRIC SWITCHGEAR - Electric switchgear comprising a casing having at least one compartment provided with a door, a plurality of electrical conductors suitable to be connected to a load, a multi-phase switching device which is mounted on a truck movable inside the compartment between a connected position wherein each phase of the switching device is electrically connected to a corresponding electrical conductor and a withdrawn position wherein each phase of the switching device is electrically separated from the corresponding electrical conductor, and an earthing switch comprising a plurality of contacts for connecting to earth the plurality of electrical conductors. The earthing switch is actuated to move between a first position wherein each contact is electrically connected to a corresponding electrical conductor and a second position wherein each contact is electrically separated from the corresponding electrical conductor by the movement of the truck between the connected position and the withdrawn position. | 09-23-2010 |
| 20100226111 | TEST SWITCH COVER ASSEMBLY - A cover assembly protects a test switch having a pair of forwardly extending, opposed posts. The cover assembly includes cover having a pair of holes on opposed sides of the front face. A thumbnut is secured within each hole. Each thumbnut includes a nut having internal threads to rotatably engage the posts extending from the cover. The nut is made of a magnetic material such that, when removed, the cover assembly may be secured to any metallic surface. | 09-09-2010 |
| 20100223033 | CONFIGURATION TOOL AND SYSTEM FOR AN INTELLIGENT ELECTRONIC DEVICE - The present disclosure provides a computing device being configured to execute a configuration software tool for providing a plurality of function blocks and connections between function blocks in a visual representation of configuration data of an intelligent electronic device, wherein each function block is for executing a function in the intelligent electronic device. The configuration tool comprises computer-executable instructions for retrieving hardware configuration data relating to external variables created by second configuration software, and for causing the computer to generate a visual representation having the plurality of function blocks and said hardware configuration data. The present disclosure also provides a configuration system of an intelligent electronic device for power transmission and distribution. | 09-02-2010 |
| 20100219163 | HIGH-VOLTAGE CIRCUIT BREAKER HAVING A SWITCH FOR CONNECTION OF A CLOSING RESISTOR - A high-voltage circuit breaker has an interrupter unit, a closing resistor and a switch which is connected in series with the closing resistor. The interrupter unit has a driven first interrupter contact which can move along an axis and interacts with a second interrupter contact, which is arranged on the axis in order to open and close the high-voltage circuit breaker. The switch has a switching contact which can rotate about a rotation shaft (D) and whose rotary movement is coupled by of a link control to the movement along the axis (A | 09-02-2010 |
| 20100219162 | LOW-VOLTAGE, MEDIUM-VOLTAGE OR HIGH-VOLTAGE SWITCHGEAR ASSEMBLY HAVING A SHORT-CIRCUITING SYSTEM - A switchgear assembly includes a vacuum interrupt chamber and a short-circuiting system arranged in the vacuum interrupt chamber. To enable rapid switching with physically simple means, a vacuum area of the vacuum interrupt chamber in which a fixed contact piece is placed is subdivided via a membrane, which is provided with a breaking line and which can be penetrated by a moving piston system to the contact piece during switching. The switchgear assembly can be utilized in a low-voltage, medium-voltage or high-voltage assembly. | 09-02-2010 |
| 20100208768 | TEMPERATURE MONITORING DEVICE FOR HIGH-VOLTAGE AND MEDIUM-VOLTAGE COMPONENTS - A temperature monitoring apparatus for high-voltage or medium-voltage components has a transducer which can produce a mechanical signal, which is dependent on the temperature of the component to be monitored. The mechanical signal is transmitted to an electrically isolating transmission element, for example in the form of a rod, and from the transmission element to a movement sensor. The transmission element can be arranged in an electrically isolating hollow body. This arrangement allows the movement sensor to be isolated from high voltages. The apparatus is composed of robust components, and can have a long life. | 08-19-2010 |
| 20100206848 | METHOD FOR PRODUCTION OF A POLE PART OF A MEDIUM-VOLTAGE SWITCHING DEVICE, AS WELL AS THE POLE PART ITSELF - A method for production of a pole part of a medium-voltage switching device, and a pole part are provided. To obviate costly pressure reinforcements at least on the switching contact side of the vacuum interrupt chamber in the area of the mold core, while also achieving an optimum injection-molded result, a compensation ring is positioned, before the encapsulation process, as a separate injection-molded seal on or close to the external circumferential line of a vacuum interrupt chamber cover, between the lower cover of the vacuum interrupt chamber and the mold core. The positioned compensation ring is also encapsulated so as to remain in the encapsulation, and the mold core is then removed. | 08-19-2010 |
| 20100205418 | CONFIGURING OF INTELLIGENT ELECTRONIC DEVICE - The present disclosure provides a method, apparatus and configuration arrangement for configuring an intelligent electronic device, in which a group of function blocks defining at least a part of a configuration of an intelligent electronic device is provided, connection lines between the function blocks are defined, a fixed function block having a fixed cycle time value is located in the group of function blocks, and setting a configuration setting for a function block that is connected to the fixed function block. | 08-12-2010 |
| 20100186988 | ELECTRIC POWER CABLE - An electric power sea cable including at least one cable core. The cable core includes an electric conductor, an electric insulation surrounding the conductor, and a protective sheath surrounding the electric insulation and acting as a water barrier. At least one outer layer surrounds the at least one cable core. The protective sheath is made of metal and the electrical power sea cable includes at least one friction reducing layer surrounding the at least one cable core and arranged inside of the at least one outer layer. | 07-29-2010 |
| 20100186075 | METHOD AND SYSTEM FOR ACCESSING DEVICES IN A SECURE MANNER - The present disclosure is concerned with a secure and trustable way of accessing devices in an embedded device environment with no network connectivity to outside service. This type of access to access-critical embedded devices by a user or service technician is controlled by way of a mobile memory or access-ticket storage i.e., such as a physical token. The token can, for example, be a smartcard or USB stick with appropriate memory for storing a user credential(s) or user identification such as a password or fingerprint. In an exemplary embodiment, a user can acquire an electronic access ticket with a suitable expiration period from a centralized ticket or access authorization server before travelling to the access-critical device, or to a location communicatively connected to the latter. The access ticket can contain access rights of the user with respect to one or several access-critical devices, and can be stored on the mobile memory. The access rights can be evaluated by the access-critical devices upon authentication of the identity of the user, based on the user credential(s), by an authenticating device to which the mobile memory can be coupled. | 07-22-2010 |
| 20100181513 | METHOD AND ELECTRONIC DEVICE FOR FINDING THE OPENING POINT FOR A REGULATED ELECTROPNEUMATIC VALVE OF A PNEUMATIC ACTUATING DRIVE - A method and an electronic device are disclosed, for finding an opening point for an electropneumatic valve, which method or electronic device can be used in a closed control loop for position regulation of a switching element of a pneumatic actuating drive for a fitting which can be operated thereby. An exemplary method can include: a) energizing the electropneumatic valve by a drive signal which corresponds to an estimated opening point; b) measuring control-loop characteristics for this drive signal by using sensors to detect movement of the switching element; c) if determined control-loop characteristics for a present opening point do not correspond to nominal presets, then varying the drive signal based on an evaluation result to produce a better-matched opening point, and the finding process then starts again with step a). | 07-22-2010 |
| 20100181512 | METHOD AND DEVICE FOR TESTING DRIVE PARAMETERS OF AN ELECTROPNEUMATIC VALVE FOR A PNEUMATIC ACTUATING DRIVE - A method and an electronic device are disclosed for testing drive parameters of an electropneumatic valve which is inserted into a closed control loop for position regulation of a switching element of a pneumatic actuating drive for a fitting which can be operated thereby. The electropneumatic valve can be driven by an alternating signal of a specific amplitude, such that the control loop will oscillate about a nominal position value to be regulated by alternate ventilation and venting of the valve, such that hysteresis present in the pneumatic actuating drive can be overcome. The trajectory of the position oscillation that is produced can, at the same time, be detected at the switching element using sensors, from which a characteristic of the control loop for the selected amplitude can be determined to confirm whether an opening point which is suitable for the control loop has been found. | 07-22-2010 |
| 20100181291 | POLE PART OF A MEDIUM-VOLTAGE SWITCHING DEVICE - The present disclosure provides a pole part of a low-voltage, medium-voltage and/or high-voltage switching device. The pole part includes a vacuum interrupter chamber having a fixed contact and a movable contact, which includes an electrical contact piece. The vacuum interrupt chamber is cast into an insulating material. The insulating material has opening at the bottom in at least one of a region of the movable contact and a drive rod driving that drives the movable contact. To reduce the heating of the pole part to enable production of a higher rated current carrying capacity, in the region of the movable contact and/or the articulation point of the drive rod, at least one ventilation opening is formed to pass through at least one of an exterior wall of the insulation, a boundary zone between the insulation and the electrical connection piece, and the electrical connection piece. | 07-22-2010 |
| 20100181182 | BREAKER WITH A GAS DRIVE FOR LOW-VOLTAGE, MEDIUM-VOLTAGE AND HIGH-VOLTAGE SWITCHING DEVICES - An exemplary breaker is disclosed with a gas drive for low-voltage, medium-voltage and high-voltage switching devices, in which disconnection can be generated via detonation capsules. To ensure that a low number of connection and disconnection operations in relation to the total operating duration of the circuit breaker is taken into consideration in design terms, without in the process reducing safety, exemplary embodiments include a piston/cylinder arrangement with a plurality of detonation capsules for generating a limited number of connection and disconnection operations in the cylinder in each of the two cylinder subareas which are separated by the piston. | 07-22-2010 |
| 20100179699 | METHOD AND ELECTRONIC DEVICE FOR COMPENSATION FOR THE DRIFT BEHAVIOR OF A PNEUMATIC ACTUATING ELEMENT DURING OPERATION - A method and an electronic device for compensation of the drift behavior during operation of a pneumatic actuating drive whose electropneumatic valve is operated in order to produce a control pressure in a closed control loop for position regulation of a switching element on the basis of a position regulator. A velocity profile v(t) of the switching element is recorded along the time axis during operation of the regulation, and at the same time, the opening cross-section profile A(t) of the fitting which is predetermined for the position regulator as a nominal value, is also recorded. The velocity profile v(t) and the corresponding opening cross-section profile A(t) are converted by elimination of the time to a velocity opening cross-section characteristic (v-A-characteristic). The v-A-characteristic is analyzed by pattern recognition for the presence of a braking profile which is characteristic of sealed closure, and before sealed closure, at least the last two measurement points in the braking profile are extrapolated to a point which is determined to be the opening point and is actually not zero. | 07-15-2010 |
| 20100179697 | METHOD FOR POSITION-DEPENDENT ELECTRONIC WEAR STATE DETERMINATION OF A VALVE MECHANISM, AND A PNEUMATIC VALVE - A method and a valve arrangement are provided for electronic wear state determination of the valve arrangement for controlling a process medium flow. A valve element, which is arranged so as to move axially within a valve housing, is moved via electrically drivable linear drive means on the basis of positioning regulation. The valve element has an essentially constant drive force applied to it, and a position speed profile over the switching travel of the valve element is determined by detecting the speed as a function of the current position of the valve element. A change profile is created by comparing the determined speed profile with previous position speed profiles, as a measure of the position-dependent wear state of the valve mechanism. | 07-15-2010 |
| 20100176320 | METHOD AND ELECTRONIC DEVICE FOR COMPENSATION OF THE HYSTERESIS OF PNEUMATICALLY DRIVEN FITTINGS - A method and an electronic device for compensation of the hysteresis of a pneumatically driven fitting having an electropneumatic valve. The electropneumatic valve is driven by a position regulator and is used in a closed control loop for position regulation of a switching element of an pneumatic actuating drive for operation of the fitting. Hysteresis of the pneumatically driven fitting is compensated for by the position regulator via at least one hysteresis correction factor. The control-engineering compensation for the hysteresis is carried out separately for a first basic case of starting or reversing a switching element and for a second basic case of continuous movement of the switching element, such that a dominant static friction is compensated for in the first basic case and the dominant sliding friction is compensated for in the second basic case, and the pneumatic actuating drive operates the switching element matched thereto. | 07-15-2010 |
| 20100172069 | HIGH-VOLTAGE SWITCHGEAR - A metal-encapsulated, gas-insulated high-voltage switchgear assembly includes a three-phase encapsulated busbar housing, at least one busbar disposed in the housing, and at least three single-phase-encapsulated circuit breakers disposed horizontally. The assembly further includes a busbar splitting module having at least one three-phase connecting flange configured to connect to the busbar housing and at least three single-phase connecting flanges pointing downward configured to connect to the at least three single-phase-encapsulated circuit breakers and an outgoer splitting module having at least one three-phase flange and at least three single-phase flanges pointing downward and configured to connect the at least three single-phase-encapsulated circuit breakers to a three-phase-encapsulated outgoer housing. | 07-08-2010 |
| 20100169272 | Concurrent Engineering Conflict Manager - A conflict manager according to the present invention is provided for managing concurrent engineering. A common work area is provided and accessible by engineers who also maintain local work areas. The conflict manager immediately notifies users when a drawing file on the common work area is modified. The conflict manager further includes locking, versioning and conflict functionalities. | 07-01-2010 |
| 20100162557 | METHOD OF FORMING A DISC-WOUND TRANSFORMER WITH IMPROVED COOLING AND IMPULSE VOLTAGE DISTRIBUTION - A method of manufacturing a transformer is provided. The method includes forming a disc-wound coil by forming a first conductor layer, a second conductor layer and a layer of cooling ducts between the first and second conductor layers. The first and second conductor layers each have a plurality of disc windings arranged in an axial direction of the disc-wound coil. Each of the disc windings includes a conductor wound into a plurality of concentric turns. | 07-01-2010 |
| 20100161279 | METHOD FOR DIAGNOSIS OF ACTUATORS - A method is disclosed for diagnosis of actuators which are operated with the aid of a positioning device as a function of a nominal value preset, which is emitted from a superordinate regulation device and is received via a communication interface. Diagnosis information can be determined from a time profile of the nominal value preset by investigating the profile of the nominal value for one or more known characteristics. | 06-24-2010 |
| 20100158073 | ARRANGEMENT OF SENSOR ELEMENTS FOR MEASURING THE TEMPERATURE - The present disclosure provides an arrangement of sensor elements for measuring the temperature in automation systems, for example. The sensor elements are integrated in a sensor head in such a manner so as to be coupled together with a medium to be measured. With the same electrical properties, the sensor elements differ in terms of at least one physical, non-electrical property. This can be achieved by means of structural measures on the sensor head and by means of a particular nature of the sensor element itself. This may involve different fillers in which the sensor elements are embedded. | 06-24-2010 |
| 20100158001 | REDUNDANT COMPUTERS AND COMPUTER COMMUNICATION NETWORKS IN A HIGH-VOLTAGE POWER TRANSMISSION SYSTEM - A method for sending signals from an active computer in a high-voltage power transmission system including active protection computers and active and standby control computers in a hierarchical structure having at least two hierarchical levels. A high-voltage power transmission system and a control station for at least a part of such a transmission system. In the system all computers on the various hierarchical levels are connected to at least two separate computer communication networks. An active computer sends signals that are to be received by at least one other computer at the same or another hierarchical level simultaneously on the two separate computer communication networks to which it is connected. | 06-24-2010 |
| 20100155371 | SHORT-CIRCUIT DEVICE FOR MEDIUM AND HIGH-VOLTAGE SWITCHING DEVICES - A short-circuit device is provided for medium and high-voltage switching devices, in which at least one moving contact is moved onto a fixed contact by means of a propelling charge. Two contact arrangements are provided in series to provide a higher dielectric strength. Each of the contact arrangements includes a fixed contact and a moving contact. A first fixed contact of a first one of the contact arrangements contains a mechanical ignition device for providing a propelling charge to a moving contact of the second one of the contact arrangements, such that when the moving contact reaches the fixed contact of the first contact arrangement, the propelling charge is mechanically ignited to cause the moving contact of the second contact arrangement to be propelled toward the fixed contact of the second contact arrangement. | 06-24-2010 |
