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JP6909462B2 |
To provide a three-phase electromagnetic apparatus in which the magnetic circuit structure and the winding structure of a winding are simple, the number of windings is small, assembly is simple, space factor of the winding is large, and ...
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JP2021517354A |
The present invention relates to a system 1, a method and a computer program product for monitoring components of a tapped transformer 3. The recording area 15 is at least one sensor 7 collected in the measuring device 2.1,72,73,...,7NIt...
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JP2021090032A |
To change the impedance without changing a voltage of a grid even when a power source of renewable energy is connected to a grid unexpectedly than when the grid is planned.A static induction electric device according to the present inven...
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JP6881083B2 |
To provide a coil device capable of varying the magnetic characteristics.A coil device 1 includes a ferrite part 8 including a ferrite core 12 having a predetermined thickness. The ferrite part 8 includes a frame 11 provided adjacently t...
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JP2021082618A |
To provide a tap-switching device that can perform tap-switching at high speed and quietly while effectively suppressing an arc current generated between contacts during tap-switching, and a tap-switching pole-mounted transformer at load...
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JP6856707B2 |
To provide a three-phase transformer in which three phases are balanced, a leakage flux is small, and efficiency is high.A three-phase transformer includes: a first plate-like iron core and a second plate-like iron core disposed to face ...
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JP6850176B2 |
To provide stationary induction equipment with improved reliability and maintainability.The stationary induction equipment comprises: a stationary induction equipment tank that houses a stationary induction equipment body and is filled w...
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JP2020205367A |
To provide a variable transformer and a using method thereof which can reduce the installation space and form various circuits.A variable transformer 100 includes an iron core 1 having a first core portion 11 and a second core portion 12...
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JP6803387B2 |
High frequency electrical heating system is provided for heating electrically conductive parts as they are advanced, either for annealing or welding processes, and in which the electrical heating current is supplied by a solid state DC t...
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JP2020202212A |
To provide a transformer capable of safely and quickly cutting a sheath to achieve an electrical connection when a lead wire is covered by a thick sheath.A transformer includes an iron core, a coil wound around the iron core, a lead wire...
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JP6802468B2 |
To provide a power supply device which is compact and lightweight and is capable of supplying a large current to a magnetizing coil.A power supply device 1 includes a power supply circuit 10 configured to output a primary power supply in...
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JP6795413B2 |
To provide an indirect switching type automatic voltage regulator capable of surely performing a protection operation for protecting a circuit on a tap changer side from an abnormal overvoltage generated when a primary terminal of a seri...
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JP2020188620A |
To allow through operation work to be performed properly and safely.An automatic voltage regulator 2 and a mobile terminal 3 are communicatively connected. The mobile terminal 3 stores a work procedure relating to through operation work ...
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JP6773591B2 |
To solve the problem that the life of a tap switching device using a mechanical relay is short, and the tap switching device is vulnerable to vibration and mechanical shock.The tap switching device comprises: a motor 11 for tap switching...
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JP6771024B2 |
A switch includes a diverter contact; a primary fixed contact; and a secondary fixed contact. The switch additionally includes a primary movable contact configured to be pivoted, relative to the diverter contact and the primary fixed con...
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JP2020155656A |
To provide a method capable of estimating an abrade amount of a contact in a diverter switch without improving an existing vacuum valve type load-time tap changer.In a vacuum valve type on-load tap changer, a tap of a tap selector is cha...
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JP2020136565A |
To provide a tap selector of a loading state tap changer, which prevents a short circuit between adjacent small-sized contact points.A tap selector 32 of a loading state tap changer, comprises: a plurality of tap terminals connected to a...
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JP2020136443A |
To provide a method enabling an estimation of a consumption amount of each contact point in a changeover switch without improving an existing vacuum valve type on-load tap switching device.In a vacuum valve type on-load tap switching dev...
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JP2020119946A |
To provide a loading state tap switching device capable of estimating a consumption amount of a contact point of a vacuum valve used for a switch changer structuring the loading state tap switching device.In a switch changer of a loading...
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JP6734328B2 |
A reactor configured in such a way that a wiring board with a main winding formed thereon and a wiring board with a control winding formed thereon are incorporated in layers into a planer core, in which a density of a magnetic flux gener...
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JP6727834B2 |
To enhance work efficiency.A method of manufacturing a transformer of an embodiment includes the steps of: assembling between a transformer body and a tap changer; drying the transformer body and the tap changer in a drying furnace in a ...
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JP6723257B2 |
An energy accumulator (15) for or in an on-load tap changer (10) comprising a motor (11) with an output shaft (12) as well as a load transfer switch (13) with an input shaft (14) comprises - an elastic accumulation element (17), and - a ...
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JP6676776B2 |
Ring-shaped moving holes (2a to 2d) are formed on a first supporting member (2), and holes (4a to 4d) are formed on a second supporting member (4). A first coil (1) is rotated along the moving holes (2a to 2d) in a state where supports (...
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JP6675260B2 |
A transformer includes: a rotary shaft configured to rotate about a central axis of the rotary shaft as a rotational axis; a primary-side first coil configured to extend around a first axis perpendicular to the central axis; a secondary-...
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JP2020027913A |
To provide a tap changer under load with a tap indicator that facilitates replacement work during maintenance.A tap indicator 107 is separated from a control unit 6 of an electric operation mechanism B, and is attached to an upper positi...
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JP6640651B2 |
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JP2019212821A |
To provide a torque adjusting device and a tap switching device capable of adjusting torque around a drive shaft.The torque adjusting device includes: a drive shaft 4 for rotating about an axis; an adjustment cam 51 for adjusting torque ...
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JP6611791B2 |
The invention relates to a switch assembly (1), in particular a preselector, for a variable transformer (4) having a first winding (2) and a second winding (3) with a first and a second tap (3.3, 3.4), said switch assembly comprising: a ...
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JP6611792B2 |
A switching arrangement (1), in particular a polarity switching means, for a control transformer (10) which comprises a first winding (2) for a phase of an AC power supply system, which phase is to be controlled, comprises —a first con...
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JP6586461B2 |
A switching arrangement (15) for an electric system (10) that includes a first and a second tapped winding (11, 13) comprises: - a first on-load tap changer (16) that includes a first discharge terminal (161) and three first switching te...
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JP6580071B2 |
The invention relates to a switching arrangement for a tap-changing transformer with an on-load tap changer, wherein said switching arrangement comprises - a main winding with a first main connection terminal, - a coarse winding with a f...
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JP6577545B2 |
A three-phase transformer according to an embodiment includes a first plate iron core and a second plate iron core disposed opposite each other; a plurality of columnar iron cores disposed between the first plate iron core and the second...
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JP2019145720A |
To provide a protection device of oil-filled electric equipment, capable of maintaining an insulation performance of vegetable oil filled as insulation oil in open type oil-filled electric equipment.An on-load tap changer fills a palm co...
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JP6566951B2 |
The invention relates to an electrical installation (1) for a three-phase alternating current network, comprising, for each phase (U, V, W) of the alternating current network, a transformer (20U, 20V, 20W) having a primary side (30U, 30V...
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JP6563000B2 |
A motor drive for actuation of an on- or off-load tap changer the drive has a drive motor, a load transmission having a first drive shaft carrying a first drive wheel and connected with the drive motor and a second drive shaft carrying a...
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JP6557668B2 |
An on-load tap changer has a housing, a switching module inside the housing and having a switch and a cooling conduit, an insulating liquid that surrounds the switching module inside the housing, and a cooling circuit comprising a pump, ...
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JP2019114587A |
To provide a maintaining method for insulation performance of insulating oil, which prevents deterioration of the insulation performance of the insulating oil due to gas generated at the time of tap switching operation of a switch while ...
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JP6542484B2 |
An on-load tap changing apparatus which suppresses an arc at the time of switching, reduces deterioration of a switching unit, and has an excellent durability is provided. This on-load tap changing apparatus includes a first switching un...
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JP6538451B2 |
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JP6539265B2 |
A load selector has a load changeover switch insert with a switching tube rotatable about an axis, at least one switching segment fastened to the switching tube, and at least two vacuum interrupters in the at least one switching segment....
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JP2019102706A |
To provide an on-load tap changeover device capable of realizing compaction of current-limit resistor and high-speed consecutive changeover, by shortening the electrification time of the current-limit resistor while restraining cost incr...
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JP6523099B2 |
To provide a load-time tap switching device capable of making compatible space saving and assembly easiness.For each phase, a load-time tap switching device comprises: a breaking contact part 26 including a plurality of vacuum valves; a ...
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JP6522637B2 |
The invention relates to a switching device, in particular an on-load tap changer, having a housing and at least one exchangeable switching module. The switching device (1), in particular on-load tap changer, comprises a housing (2); an ...
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JP6508861B1 |
To adjust a voltage of six-phase alternating current with one device. A reactor is wound on three legs made of a ferromagnetic material, one is wound on each leg, and a three-phase direct current flows through the first main winding, and...
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JP2019068009A |
To provide a maintenance control method for preventing insulation performance of insulating oil and sealing performance of a diaphragm from being adversely affected by a gas generated from a switch in a sealed on-load tap changer with a ...
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JP2019067989A |
To provide a diagnostic system capable of highly accurate diagnosis of the degree of deterioration of insulation oil, with relatively simple device configuration, in the on-load tap changeover device of transformer.A diagnostic system of...
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JP6505496B2 |
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JP6504766B2 |
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JP6501769B2 |
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JP6499030B2 |
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