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Matches 151 - 200 out of 6,621

Document Document Title
WO/2013/018107A1
An electrical energy transformation assembly (1 ) supplied by a power source (A) for appropriately supplying power to a load (L) that comprises a primary winding (2) connected to the power source (A) and electromagnetically coupled to a ...  
WO/2013/018108A1
An energy-saving device (1) inserted between a three-phase power supply (A) and a three-phase load (L), comprising a three-phase electrical transformer (10), each phase of which includes a transformation assembly (1 1) with a primary win...  
WO/2011/141081A3
The invention relates to an on-load tap changer for step transformers, which has one main current branch and one auxiliary current branch for each of the two winding taps to be switched. In each main current branch and auxiliary current ...  
WO/2013/018072A2
An impedance emulator device (5-8, 15) which is variable in a controlled manner comprises an inductor (L) connected between a first and a second terminal (2, T), an ordered array (5) of solid-state electronic switches (Ql, Q2), connected...  
WO/2011/141076A3
The invention relates to an on-load tap changer for switching among winding taps of a step transformer without interruption. According to the invention, in each auxiliary current branch of the on-load tap changer, which operates with vac...  
WO/2013/010699A1
The invention relates to a method for load transfer and to a corresponding load transfer switch for a stepping switch. The invention is based on the concept of resolving the previously complex switching sequence during load transfer and ...  
WO/2013/000608A1
The present invention relates to a tap changer comprising a diverter switch which has at least two branches, wherein each branch comprises: a series connection of a main interrupter and a transition interrupter; and a transition resistor...  
WO/2012/175141A1
A three-phase on-load tap changer (40) comprises a selector (42) which has first, second, and third pairs of contact sets. Each pair of contact sets corresponds to a respective phase. One contact set within a given pair is to carry a loa...  
WO/2012/113641A3
The invention relates to a tap changer for voltage regulation, comprising semiconductor switch units (S1.1,..., S1.6; S2.1,..., S2.6) on a variable transformer having a regulating winding, wherein two parallel load branches (1, 2) are pr...  
WO/2012/171791A1
The invention relates to a gearbox for a tap changer. The gearbox has an input drive shaft (1) arranged to be connected to a motor. The gearbox also has a diverter switch drive output (3) with a diverter shaft (31). The diverter switch d...  
WO/2012/167330A1
A saturated core fault current limiter including: at least one AC coil wrapped around a high magnetic permeability core; an high magnetic permeability core having an elongated form; a series of permanent magnets adjacent the high magneti...  
WO/2012/167329A1
A fault current limiter disposed within an external casing, and of the type having a core biased magnetically towards saturation during normal operation and an AC current carrying coil around the core, wherein the core is electrically is...  
WO/2012/167331A1
A fault current limiter of the type having at least one elongated core biased magnetically towards saturation by means of a surrounding magnetic field, and an AC coil surrounding the core, the fault current limiter including: an elongate...  
WO/2012/159691A1
The invention relates to a supplementary transformer winding (10, 60), comprising a first (12, 72), second (14, 74) and third (16, 64) winding module, each having at least one winding segment (18, 20, 22) that has at least one first (18)...  
WO/2012/139167A1
A three phase fault current Iimiter (FCL 6) has three spaced apart input terminals (10) for electrically connecting to respective terminals (5) of a transformer (2). Three output terminals (1 1 ) electrically connect FCL (6) with a load ...  
WO/2012/139187A1
The present invention relates to a dry distribution transformer comprising a housing (1'), a coil (200), a sealed compartment (100) and a taps panel (1 10) associated to the coil (200). The taps panel (110) has an electrostatic shield (1...  
WO/2012/136423A1
The invention relates to a tap changer for the interruption-free switchover between winding taps of a tap-changing transformer. Furthermore, the present invention relates to a novel vacuum interrupter which is particularly suitable for s...  
WO/2012/136302A1
The invention is related to a fluid insulated high voltage coil (12, 14, 16, 66), comprising a closed tank (22) for an insulation fluid (30) and a high voltage coil arranged therein with at least two taps (18, 54). An insulation tube (24...  
WO/2012/133535A1
Provided is an energy-storing mechanism with a forcing mechanism which is inexpensive and simple and in which load torque is suppressed and stable operation is possible. Also provided is an on-load tap changing device provided with same....  
WO/2012/126886A1
The invention relates to a current limiter (10) adapted to be connected in series between an AC current source (S) and a load (C). The limiter comprises a magnetic circuit (2) including a core (20) and at least one inductive coil (S) wou...  
WO/2012/116946A1
An inductor apparatus (2) includes an inductor winding (3), a core (4) defining a magnetic circuit (1) for a magnetic flux generated by a current flowing through the inductor winding (3), at least one permanent magnet (5) magnetically bi...  
WO/2012/103587A1
In a fault current limiter (FCL) of a saturated core type having at least one coil wound around a high permeability material, a method of suppressing the time derivative of the fault current at the zero current point, the method includin...  
WO/2012/089717A1
The invention relates to a transformer comprising at least one secondary (5) having windings (5.1, 5.2, 5.3), a pair of wound magnetic transducers (6.1, 6.4), one of the transducers (6.1) including one or more first conductive bars (10.1...  
WO/2012/072181A1
The invention relates to a tap changer for switching over between winding taps of a tap transformer without interruption, wherein two load branches are provided for each phase which is to be switched and each load branch has a vacuum swi...  
WO/2012/070761A1
The present invention relates to a tap position indicator, and more particularly, to a tap position indictor for directly receiving the specifications of an on-load tap changer (OLTC) from a worker working in the field, and for setting t...  
WO/2012/062408A1
The invention relates to an on-load tap changer for the uninterrupted changeover between two winding taps of a tap-changing transformer, wherein two load branches are provided such that the one load branch is electrically connected to th...  
WO/2012/016202A3
Fault Current Limiters (FCL) provide protection for upstream and/or downstream devices in electric power grids. Conventional FCL require the use of expensive conductors and liquid or gas cryogen handling. Disclosed embodiments describe F...  
WO/2012/055502A1
The invention relates to a tap changer for low-power switching between different winding taps of a step transformer. The general inventive concept consists in using a planetary stepping gear system that is further developed for use in a ...  
WO/2011/024179A8
A three-phase current limiter (30) for an alternating current system includes an AC magnetic circuit having at least one AC coil (35Rl, 35Sl, 35Tl) for each phase of a 3- phase AC supply wound on a saturable ferromagnetic core and config...  
WO/2012/041367A1
The invention relates to an arrangement for reducing the unidirectional flux fraction in the core of a transformer, comprising: - a compensation winding (3) that is magnetically coupled to the core (4) of the transformer, - a DC generato...  
WO/2012/038030A1
The invention relates to an energy store for an on-load tap changer. The general inventive concept consists in specifying an energy store for an on-load tap changer, in which a first gearwheel (2), which is in the form of a sun wheel, is...  
WO/2012/034653A1
The invention relates to a tap changer for switching among winding taps of a step transformer without interruption, wherein two load branches are provided for each phase to be switched and each load branch has a vacuum switching contact ...  
WO/2012/030428A1
A switch comprising a plurality of transformers and a path comprising a number of wires. Each of the plurality of transformers comprises a core and a control winding. The path is configured to connect the plurality of transformers to eac...  
WO/2012/022397A1
The invention relates to a tap changer for switching among winding taps of a step transformer without interruption, said step transformer having an oil-filled transformer tank, wherein the tap changer does not have a separate housing or ...  
WO/2012/022396A1
The invention relates to an on-load tap changer for switching among different winding taps of a step transformer without interruption. The general inventive concept lies in eliminating the previously static design of the on-load tap chan...  
WO/2012/019514A1
A high voltage direct current (HVDC) converter transformer and method for on-load tap change (OLTC) switch connection thereof, wherein said HVDC converter transformer comprises DC and AC sides; the AC side comprises an AC side main coil,...  
WO/2012/019663A1
The invention relates to a coil arrangement, in particular an alternating-current transformer, comprising two windings, which are wound around a leg, in particular around a middle leg, of a coil core, wherein outer legs of the coil core ...  
WO/2012/013237A1
A current limiter (10) comprising at least one core element (12), the or each core element (12) including a hard magnetic material, and at least one electrically conductive wire being wound around a portion of the respective core element...  
WO/2012/016202A2
Fault Current Limiters (FCL) provide protection for upstream and/or downstream devices in electric power grids. Conventional FCL require the use of expensive conductors and liquid or gas cryogen handling. Disclosed embodiments describe F...  
WO/2011/160743A1
The invention relates to a tap changer (10) for switching among at least two winding taps (12, 14) of a step transformer (16) without interruption, wherein a load branch having a path (18) comprising a series arrangement of at least one ...  
WO/2011/157316A1
The present invention relates to an on-load tap changer for switching among winding taps of a step transformer without interruption. The general inventive concept lies in connecting a first winding tap of a first main current branch to a...  
WO/2011/157317A1
The invention relates to a tap changer (10) for switching among at least two winding taps (12, 14) of a step transformer (16) without interruption. The tap changer (10) has a load branch having at least two parallel paths (18, 20), each ...  
WO/2011/157318A1
The invention relates to a tap changer (10) for switching among at least two winding taps (12, 14) of a step transformer (16) without interruption, comprising at least one mechanical switching element (MTF, TTF, 32) and at least one vacu...  
WO/2011/110951A3
An electromagnetic system consists of an electric circuit comprising two solenoids wired in series, one mounted either side and proximate to a toroid. Voltage is applied across the toroid and the solenoids in a specific sequence which al...  
WO/2011/152753A1
The invention relates to electrical engineering and can be used in reactors controlled by magnetization which are installed, for example, in an electrical circuit for reactive power compensation, for voltage stabilization, for parallel o...  
WO/2011/091256A3
A superconducting fault current-limiter is provided, including a superconducting element configured to resistively or inductively limit a fault current, and one or more variable-impedance shunts electrically coupled in parallel with the ...  
WO/2011/141081A2
The invention relates to an on-load tap changer for step transformers, which has one main current branch and one auxiliary current branch for each of the two winding taps to be switched. In each main current branch and auxiliary current ...  
WO/2011/141080A1
The invention relates to a switching arrangement for a tap changer, comprising a plurality of contact rods (3), which are arranged parallel to each other, at a distance from each other, and in a circular shape around a central longitudin...  
WO/2011/141076A2
The invention relates to an on-load tap changer for switching among winding taps of a step transformer without interruption. According to the invention, in each auxiliary current branch of the on-load tap changer, which operates with vac...  
WO/2011/134528A1
A selector switch arrangement (1) for a high voltage device comprising a cylindrical current collector (2) made of electrically conductive material and having a first (3) and a second end (4), a movable contact (5) arranged movable along...  

Matches 151 - 200 out of 6,621