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Matches 451 - 500 out of 6,691

Document Document Title
WO/1987/001505A1
An inductive component for universal use in any electrical/electronic circuits, whose coefficient of self-induction (L) is independent of the signal, is constant, electrically controllable and can be varied significantly. The component (...  
WO/1983/002194A1
The transformer comprises a magnetic circuit (8) as well as, for each phase, a high voltage electric circuit (17) and a low voltage electric circuit (18), both wound about at least one section of the magnetic circuit (8). The electric ci...  
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...  
JP2021082618A
To provide a tap changer capable of high-speed and quiet tap changer while effectively suppressing an arc current generated between contacts at the time of tap changer, and a load-time tap changer pole transformer using this tap changer....  
JP2021082795A
To cover a voltage of P way (P is an integer of 3 or more) on the primary side and a voltage of S way (S is an integer of 2 or more) on the secondary side, and P × S included in a tap provided on the primary side. Provide tapped transfo...  
JP2021082667A
To provide a tap changer under load, a tap changer under load, and a voltage adjusting device capable of confirming that taps are normally switched by a changeover switch. A tap changer (3) under load includes a plurality of changeover s...  
JP2021513222A
The switching element used in the tap changer includes a vacuum interrupter (V), an operating device, and a guide device (F). The vacuum interrupter (V) has a movable contact (K1), a rod (ST) coupled to the movable contact (K1), and a ho...  
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 ...  
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...  
JP2021044341A
To provide an electromagnetic device capable of increasing the magnetic flux density of a portion where a control magnetic flux is injected from a control core to a main core. A variable reactor 10 as an electromagnetic device includes a...  
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...  
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...  
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...  
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...  
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...  
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 ...  
JP2020176888A
To provide a measurement device and a measurement method for an electric power transformer, with which it is possible to shorten the power outage work time for frequency response analysis.The measurement device comprises: a variable indu...  
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...  
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...  
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...  
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...  
JP2020136564A
To provide a compact changeover switch and a transformation device including an on-load tap switcher with the changeover switch.A changeover switch 31 comprises: multiple switches 31U1-31U3, 31V1-31V3 and 31W1-31W3 each of which includes...  
JP2020136562A
To provide a transformation device which simplifies configurations of a transformer and a tap switcher and comprises the tap switcher for facilitating connection work between a coil-side tap terminal and a switcher-side tap terminal.A tr...  
JP2020136563A
To provide a power accumulation mechanism which performs a switching operation of a changeover switch with relatively small drive power, and a transformation device with the power accumulation mechanism.A power accumulation mechanism 40 ...  
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...  
JP2020120014A
To provide a transformer capable of adjusting leakage inductance easily.A transformer includes a primary winding 14, a secondary winding 15, a main magnetic core 11 through which main magnetic flux, linking with the primary winding 14 an...  
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...  
JP6734328B2
A reactor in which a wiring board having formed a main winding and a wiring board having formed a control winding are assembled in layers in a planar core, wherein a magnetic flux density formed by a control current through the control w...  
JP2020113581A
To provide an energy accumulation device capable of quickly performing a switch in a small size.An energy accumulation device of an embodiment is provided to a load tap switch changer for switching a power transformer at a loading. The e...  
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 ...  
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 ...  
JP2020061394A
To provide an autotransformer with a phase adjuster, capable of adjusting a phase angle over a wider adjustment range.An autotransformer with a phase adjuster of an embodiment has a serial winding, a shunt winding, a phase adjustment tap...  
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 (...  
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-...  
JP2020027869A
To provide a manufacturing method of power transformer capable of shortening operation time at a high place while improving safety when assembling the power transformer, and to provide an assembly template used when assembling the power ...  
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...  
JP2020027867A
To provide a protective covering for a tap switcher, capable of confirming a tap position without detachment.A protective covering 1 includes a main body part 1a covering all of a handle 8. The main body part 1a is provided with a window...  
JP2020027868A
To provide a manufacturing method of power transformer capable of shortening operation time at a high place while improving safety when assembling the power transformer, and to provide an assembly template used when assembling the power ...  
JP2020024997A
To equalize the magnetic flux density formed by a control current of a control winding, and set the inductance of the reactor by the control current of the control winding in a reactor in which a wiring board on which a main winding is f...  
JP6640651B2  
JP2020500392A
The present invention relates to the method of controlling the change module based on the solid state switch element made from a thyristor. This change module comprises the first Roll style cell and the second Roll style cell which were ...  
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 ...  
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 ...  
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...  
JP2019533305A
In a method for switching tap changer 11 at the time of load, tap changer 11 is at the time of load, -Having one fine-tuning selection machine 20, a -1 One introduction selection machine 40, and -1 One change switch 60, fine-tuning selec...  
JP2019179929A
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 ...  
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...  
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...  
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...  
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...  

Matches 451 - 500 out of 6,691