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| Number | Title | Issue Date |
| 8181334 | 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 w... | 05/22/2012 |
| D660253 | Pole part | 05/22/2012 |
| 8172048 | Braking device for a robot drive and method of detecting a braking state Method of detecting a braking state of a braking device of a robot drive, having a frame device which, if required, applies braking forces to a rotating component of the robot drive by means of a first movable frame element. As a result, the braking device is shifte... | 05/08/2012 |
| D659109 | Switchgear breaker compartment door | 05/08/2012 |
| D658589 | Switch | 05/01/2012 |
| D658133 | Switch | 04/24/2012 |
| D657742 | Earthing switch | 04/17/2012 |
| 8155934 | Passivity enforcement by modal perturbation Residue perturbation is used for enforcing passivity of a linear response model of an electrical component having n>1 ports. According to an exemplary embodiment, a modal perturbation approach can be used, which allows weighted perturbation of the individual modes b... | 04/10/2012 |
| 8154835 | Power and control unit for a low or medium voltage apparatus A power and control unit for low or medium voltage applications operatively coupable to a low or medium voltage apparatus and to a protection relay having a trip circuit supervision. The power and control unit for low or medium voltage applications according to the ... | 04/10/2012 |
| 8154297 | System and method for predictive maintenance of a battery assembly using temporal signal processing A technique of monitoring a battery assembly may include monitoring a parameter associated with the battery assembly to obtain a number of monitored parameter samples. A temporal sequence of monotonically increasing values may be generated from the monitored paramet... | 04/10/2012 |
| 8148654 | Medium-voltage or high-voltage switching or control device, in particular a switchgear assembly A switchgear assembly is disclosed wherein to combine individual functions to form a standardized unit, without deviating from known technology, electrical cabling between the electrical functional components of the switchgear assembly can be replaced by a wiring in... | 04/03/2012 |
| D656460 | Electrical transformer | 03/27/2012 |
| 8134819 | Single coil actuator for low and medium voltage applications A single coil actuator for low and medium voltage applications which comprises a single coil electromagnet and a power and control unit operatively connected to said single coil electromagnet. The power and control unit comprises: a first control unit a... | 03/13/2012 |
| 8134810 | Protective circuit arrangement A protective circuit arrangement is disclosed for electrical equipment supplied, for example, from a conductor loop in surroundings subject to explosion hazards in process engineering installations. To suppress current flow from an energy store of the electrical equ... | 03/13/2012 |
| 8131485 | Method for fault location in electric power lines A method for locating faults in three-terminal and multi-terminal power lines, applicable in electric power systems for overhead and underground cable transmission and distribution lines. The inventive method is characterized in that it measures current for fault an... | 03/06/2012 |
| 8125751 | Method for sectioning with a section switch a medium-voltage electric power distribution line exhibiting a disturbance, section switch for medium-voltage electric power distribution line applicable thereon and electronic circuit for detecting a fault current and comprised by said section switch A method for sectioning a medium-voltage distribution electric line evidencing a disturbance using a section switch. The steps are: (a) detecting a current having an amplitude and a wave form profile in the medium-voltage line; (b) analyzing the wave form profile to... | 02/28/2012 |
| 8116070 | Control and switchgear cabinet The disclosure relates to a control and switchgear for a medium or high-voltage substation. In order to improve a generic control and switchgear by means of a given number of prefabricated wiring elements, the function-related wiring is combined in a uniform control... | 02/14/2012 |
| 8111123 | 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 ... | 02/07/2012 |
| 8106316 | Locking and operating system for generator circuit breakers A control unit for an electrical switching device comprises: a control shaft which is rotatable about a control axis for operating a moveable contact of the electrical switching device, a first blocking mechanism for the control shaft, which can be activated to bloc... | 01/31/2012 |
| D651982 | Switchgear enclosure with a plenum | 01/10/2012 |
| 8084891 | Method and apparatus for optimizing synchronous switching operations in power systems A method and an apparatus for optimizing switching operations executed by a switching device coupled to an AC power line, wherein signals related to the waveform of the electrical phases of the power line are acquired. When a command for executing a switching operat... | 12/27/2011 |
| 8082500 | Method and apparatus for communicating with an intelligent electronic device associated to a switching device in power systems A method and apparatus for communicating with an intelligent electronic device coupled to a switching device used in a power system, wherein a user-interface software program operates on a computing device which is operatively connected to the intelligent electronic... | 12/20/2011 |
| 8081464 | High-voltage switch with cooling An exemplary encapsulated high-voltage switch is disclosed which contains a heat-generating current conductor, a metal encapsulation surrounding the current conductor, and a cooling element. A cooler of the cooling element is fixed on a part of the encapsulation tha... | 12/20/2011 |
| 8081002 | Apparatus and method for determining location of phase-to-phase fault or three-phase fault A method and apparatus for determining a distance of a phase-to-phase fault or a three-phase fault on a three-phase electric line, the apparatus (40) being configured to determine a first estimate value for a distance between the measuring point (40) a... | 12/20/2011 |
| 8080746 | High-voltage circuit breaker and switch arrangement The disclosure relates to an electrical switching device, e.g., a high-voltage switch, with a mantle-side electrical connection. According to the disclosure, an encapsulated angle disconnector is fitted between the mantle-side electrical connection and the outdoor b... | 12/20/2011 |
| 8051048 | System and method for automated transfer and evaluation of the quality of mass data of a technical process or a technical project The invention relates to a system and a method for automated transfer and subsequent evaluation of the quality of mass data of a technical process or a technical project in a standardized environment (70) of one or more data processing devices with an assignm... | 11/01/2011 |
| 8045307 | Faulted phase decision method between current and voltage based delta phase selectors A method of identifying fault conditions in a three phase power system includes monitoring the changes of both the current and voltage properties on a three phase power network. A maximum phase change value of both the current and voltage is determined. Either the v... | 10/25/2011 |
| 8044666 | Method for determining location of phase-to earth fault A method and apparatus for determining a location of a phase-to-earth fault on a three-phase electric line (30) of an electric network, comprising determining an equivalent load distance curve of the electric line (30) representing a voltage drop along... | 10/25/2011 |
| 8040665 | Modular compact secondary substation An electricity transformer station having a foundation and a housing on top of the foundation, the housing comprising walls and a roof. The housing comprises a plurality of identical modules assembled in a row along a longitudinal axis of the housing, each of the mo... | 10/18/2011 |
| 8035329 | Apparatus for actuating an electrical switching device The invention relates to a device for actuating an electrical switchgear comprising at least one mobile contact point driven by a rotary shaft. According to the invention, an electric motor comprising a rotating drive shaft can be coupled to the rotary shaft by mean... | 10/11/2011 |
| 8027152 | 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 sect... | 09/27/2011 |
| 8022709 | Method and apparatus for determining circular characteristic A method and a system for determining a circular characteristic for distance protection of a three-phase electric line, the system comprising means for detecting a fault on the electric line, means for identifying a faulted phase or phases of the electric line, mean... | 09/20/2011 |
| 8018317 | Fuse arrangement The invention relates to a fuse system for a switchgear assembly, especially for a medium voltage switchgear assembly. The fuse system comprises a plurality of fuses which correspond to the number of phases, every fuse having a tripping bar that projects from the fa... | 09/13/2011 |
| 8013435 | Semiconductor module A semiconductor module includes a base plate, at least one semiconductor chip mounted on the base plate, a case fixed to the base plate and surrounding the at least one semiconductor chip, an electrically insulating gel layer covering the at least one semiconductor ... | 09/06/2011 |
| D644605 | Transformer | 09/06/2011 |
| 8007312 | 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... | 08/30/2011 |
| 8000933 | Method and apparatus for showing data representative of the accuracy of operations of a high-voltage switchgear A method and an apparatus for showing data representative of the accuracy of switching operations executed by a high-voltage switchgear which is operatively coupled to a power line and to a synchronous switching device. Data related to switching operations executed ... | 08/16/2011 |
| 7999557 | Method for determining location of phase-to-earth fault A method and apparatus for determining a location of a phase-to-earth fault on a three-phase electric line of an electric network, comprising determining, when the ratio of a fault current and load current has a first value, a first fault distance line which indicat... | 08/16/2011 |
| 7994442 | Rack gear for electrical circuit breaker The disclosure relates to an electrical breaker device with double movement of its contact systems. An auxiliary gear is designed for driving the second contact systems such that the holding means for holding the rack and pinion gear and the guiding means for slide ... | 08/09/2011 |
| 7992451 | Magnetoinductive flow meter having an electromagnet unit which includes combined magnetic flux-concentrating means A magnetoinductive flow meter has an electromagnet unit which is mounted on an outside periphery of a measuring tube. The electromagnet unit can include magnetic flux-concentrating device and electric coils for generating a magnetic field which is oriented substanti... | 08/09/2011 |
