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WO/2012/016202 |
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...
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WO/2012/013237 |
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...
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WO/2011/160743 |
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 ...
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WO/2011/157317 |
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 ...
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WO/2011/157318 |
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...
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WO/2011/157316 |
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...
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WO/2011/152753 |
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...
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WO/2011/141081 |
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 ...
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WO/2011/141076 |
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...
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WO/2011/141080 |
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...
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WO/2011/134528 |
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...
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WO/2011/129717 |
The invention relates to electrical engineering and may be utilized in an electrical circuit for reactive power compensation, voltage stabilization, etc. The reactor comprises three upper and three lower vertical rods. Two-section windin...
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WO/2011/110951 |
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...
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WO/2011/110951 |
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...
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WO/2011/091256 |
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 ...
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WO/2011/082528 |
A moving contact for an oil-immersed load switch comprises an upper contact plate (202), a lower contact plate (204), an upper leaf spring (302) and a lower leaf spring (304). The upper contact plate is opposite to the lower contact plat...
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WO/2011/076309 |
The invention relates to a step switch provided with a preselector and a polarity circuit, a separate polarisation resistance being respectively provided at the beginning and the end of the stepped winding. Optionally, the two polarisati...
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WO/2011/072460 |
An alternating-current stepped controllable paralleling single/three-phase reactor comprises a main reactor (1), a stepped reactor (2), a detection unit (3) and a central controller (4). The main reactor (1) is a single-phase or three-ph...
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WO/2011/073771 |
A polyphase transformer (1 ) comprising at least a first leg (2, 51 ) and a second leg (3, 52) of a magnetic material is described. The transformer comprises a single core with legs (2-4, 51-53) and yokes (27, 28, 54, 55). A primary wind...
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WO/2011/068044 |
A voltage transformer comprises: a primary winding (3) that receives an AC voltage; a plurality of secondary windings (4a, 4b) that have mutually different numbers of turns; and a voltage converter circuit (5) for converting AC voltages ...
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WO/2011/060779 |
The invention relates to a continuously adjustable transformer (200), comprising a transformer core (100), a primary winding (7), a one-layer contactable adjustment winding (30), an adjustment contact (22) that can be moved along the adj...
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WO/2011/042070 |
The invention relates to a tap changer which has two load arms which each have vacuum interrupters. According to the invention, an additional mechanical switching element is provided between the load arms and the common load discharge li...
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WO/2011/035394 |
A three phase fault current limiter (FCL 6) has three spaced apart input terminals (7) for electrically connecting to respective terminals (5) of a transformer (2). Three output terminals (8) electrically connect FCL (6) with a load circ...
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WO/2011/029251 |
A non-excitation cage-shaped voltage-regulation tap changer for a transformer. Each phase of the tap changer has two cage bodies. One of the cage bodies has annular fixed contacts (7-1) linked with main winding taps (K) and annular fixed...
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WO/2011/024180 |
A current limiting device (30, 40, 50, 60) comprising for each phase of an AC supply a closed magnetic core (31) of reduced volume and mass having first and second pairs of opposing limbs (32a, 32b; 33a, 33b), and at least one AC coil (3...
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WO/2011/024179 |
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...
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WO/2011/022906 |
A cage-style tap-changer without excitation for transformer includes up and down brackets (2, 3) and insulating poles (4) connected between them along peripheral direction. There are interval annular fixed contacts (7) on the axes of the...
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WO/2011/024179 |
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...
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WO/2011/002829 |
An ignition apparatus includes a core, primary and secondary windings and a loop-shaped magnetic return path structure. The structure includes layers of wound strip steel or wound ferritic wire stacked in an outward fashion. The core is ...
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WO/2010/127759 |
The present invention relates to a method for quantitatively analyzing gases as a monitor for on-load tap changers. The general inventive concept lies in selecting particular characteristic gases allowing an indirect subsequent associati...
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WO/2010/122422 |
The present invention relates to providing electrical contact in a tap changer of a transformer. A tap changer with contacts is provided, which contacts contributes to a compensation of tolerances and wear. The tap changer comprises a cy...
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WO/2010/115485 |
The invention relates to an on-load tap changer comprising semiconductor switching elements for uninterrupted switching between fixed tap changer contacts which are electrically connected to winding taps of a tapped transformer. Each of ...
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WO/2010/094993 |
The invention relates to converter equipment for electric power generation by means of converting constant magnetic field into alternating current without mechanical moving parts. The technical result is the increase of efficiency- outpu...
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WO/2010/072623 |
The invention relates to a tapping switch for medium-/low-voltage transformers that is based on one or more mechanical switches. During switchover, the current is conducted over semiconductor switches in order to ensure freedom from inte...
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WO/2010/067649 |
A variable inductor (10) is provided with: a first coil (1); a second coil (2) which generates a magnetic flux in the direction which cancels a magnetic flux generated by the first coil (1); a movable core (5) which is positioned between...
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WO/2010/056122 |
A current limiter, wherein the limiter is designed to limit three-phase alternating current, having a nominal current intensity of 100 A or more, wherein the limiter is at least provided with: -a first, second and third current conductor...
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WO/2010/043546 |
High frequency resonance based ignition system comprising a generator, a resonance structure, and a heat release interface, the resonance structure having a high frequency coil, characterized in that it further comprises a tuning element...
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WO/2010/033759 |
A voltage regulator is provided that includes a plurality of buck-boost transformers each having primary and secondary windings. The secondary windings of the transformers are electrically disposed in series between a source and a load. ...
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WO/2010/022751 |
The invention relates to a method for switching without any interruption between two winding taps (tap n, tap n+1) of a tap-changing transformer, wherein each of the two winding taps is connected to the common load output line via in eac...
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WO/2010/022750 |
The invention relates to a tap switch for uninterrupted changeover between two winding taps (tap n, tap n+1) of a tapped transformer, wherein each of the two winding taps is connected to the common outgoing load line via in each case a m...
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WO/2009/152662 |
A self power-acquiring quickly responsive controllable electric reactor is provided. The coil of the main body portion (1) of the controllable electric reactor contains a net-side winding (5) and a control winding (6). The coil of the ma...
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WO/2009/146579 |
A magnetic filter includes three iron stud cores (2), an upper yoke (11), a lower yoke (12) and three coil assemblies (3) separately around three iron stud cores, the iron stud cores are placed symmetrically to each other in 120-degree b...
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WO/2009/137908 |
A tap-switching autotransformer for regulating the voltage supplied to a facility includes an electronics sub-assembly for controlling switching of the taps. The electronics sub-assembly and the windings are contained in a housing from w...
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WO/2009/136879 |
The invention pertains to the execution of the turns of a coil of a transformer or the like. The invention presents a solution for linearly varying, with a small resolution interval, the number of turns of a coil. The invention applies f...
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WO/2009/121143 |
A fault current limiter (FCL) includes a series of high permeability posts (1) for collectively define a core for the FCL. A DC coil (2), for the purposes of saturating a portion of the high permeability posts (1), surrounds the complete...
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WO/2009/107130 |
A method for providing an operating voltage to an air conditioner, including: measuring an input line voltage; comparing the measured input line voltage to an desired operating voltage of the air conditioner; and transforming the input l...
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WO/2009/105932 |
An external-hanging type combined on-load tap-changer comprises a housing(200), a tap-chooser(600), a change-over switch assembly(700), a transmission means and an electric operating mechanism. Terminals(220) are provided at a sidewall o...
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WO/2009/105931 |
A movable contact of a tap changer comprises a mounting plate assembly (200) of the movable contact revolving with a main shaft of the changer and a clip-on movable contact (300) provided on the mounting plate assembly (200) of the movab...
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WO/2009/096816 |
The inventive device comprises a closed magnetic circuit, a central rod disposed inside the closed magnetic circuit, a control winding arranged on the central rod, a power winding and a control unit. The device also comprises a cylindric...
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WO/2009/094541 |
An electromagnetic actuator with flux feedback control includes two poles located on opposite sides of a soft-magnetic target. A bias flux is introduced that flows into both poles. Magnetic circuitry may be designed so that the total bia...
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