Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 451 - 500 out of 5,187

Document Document Title
WO/1990/014675A1
The oil reservoir (2) of a load-reversing switch suspended in the flange opening of a transformer tank (20) extends outside the transformer tank (20). A perforated separating plate (6) arranged below and parallel to the level of the oil ...  
WO/1990/006584A1
A high-voltage winding for core-form power transformers is disclosed that uses two different conductor configurations within a single coil to minimize eddy current losses. The winding (5) includes a first elongated conductor bundle (7) f...  
WO/1989/008948A1
A magnetic amplifier including a magnetic core (11) having a primary leg (15), a secondary leg (17), and a control leg (13). A primary winding (21) is wound about the primary leg (15) of the magnetic core for generating a non-saturating ...  
WO/1988/010502A1
An arrangement of an on-load change-over switch of a sequence switch for uninterrupted switching of the regulating coil of a transformer. On-load change-over switching is usually effected with mechanical switch elements, which entails un...  
WO/1988/005208A1
A system is disclosed for generating the gate trigger voltage of thyristors connected in antiparallel and arranged parallel to the latching contact of an on-load change-over switch. Until now, the energy for the gate trigger voltage nece...  
WO/1988/001791A1
A transformer apparatus including a magnetic core (2) and a main winding (N1) is characterized in that an auxiliary winding (N2) is added in operative relation to the magnetic core (2), whereby a predetermined amount of demagnetizing cur...  
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...  
JP2024507955A
- a first fixed contact 3 and a second fixed contact 4; - a changeover 1 for an on-load tap changer 30, comprising a movable contact 5 with a first suction element 6; - the movable contact 5 is movable from the first position 40 to the s...  
JP2024019783A
[Problem] To provide an automatic voltage regulator that can suppress product costs and correct voltage imbalance by controlling each phase. [Solution] Voltage adjustment transformers 9 and 10 are V-connected and inserted between three-p...  
JP7427512B2
To provide an electromagnetic apparatus that requires a small number of windings, is lightweight and has a simple structure, and enables significant change of an impedance (a reactance).An electromagnetic apparatus 10 includes: a first i...  
JP2023553714A
- one input 20 for receiving at least one position from the controller 6 of the on-load tap changer 1; - one output section 30 for outputting the position of the on-load tap changer 1 to a secondary device 50; - at least one resistor 22 ...  
JP2023169851A
To provide an electronic type tap changer control device of a tap-changing transformer which monitors short circuit current of a tap winding at real time, selectively controls a changing phase of an electronic type tap changer and stably...  
JP7387571B2
To provide a limit tap restricting device and an electric operating device for a load tap changer which can suppress production cost.A limit tap restricting device includes a main drive shaft engaging part, a slider and a base member. Th...  
JP2023167200A
To achieve downsizing and weight saving, cost reduction and enhance flexibility and possibility without requiring an additional coil constituting a LLC resonant circuit.The leakage inductance of a transformer T intersecting a primary win...  
JP7372879B2
To provide a load tap changer capable of dispersing switching loss and steady-state loss by using a plurality of semiconductor switches as changeover switches.A tap changer under load (3a) includes a plurality of changeover switches (ThX...  
JP7365700B2
To provide a variable transformer that can change and adjust an output voltage with high accuracy.A variable transformer 100 includes a first core portion 11, an iron core 1 having a second core portion 12 and a third core portion 13 fac...  
JP7362914B2
A charging mechanism for an on-load tap changer according to an embodiment comprises a drive arm, a toggle spring mechanism, and a Geneva mechanism. The drive arm is rotated by external force. The toggle spring mechanism is charged as an...  
JP7358641B2
A tap selector of an on-load tap changer according to an embodiment of the present invention has a stationary contact and a stationary plate. A plurality of the stationary contacts are provided. The stationary plate has a ring shape. The...  
JP2023141120A
To provide a voltage regulator with a small maximum effective value of an AC current flowing through a switching device.In a voltage regulator 1, two series transformers 3u and 3v each having a primary winding 31 and a secondary winding ...  
JP7355745B2
An on-load tap changer has: a first selector rod and a second selector rod; a load changeover-switch rod; a switch; and a transmission. The first selector rod, the second selector rod and the load changeover-switch rod are arranged colli...  
JP2023131795A
To provide a voltage controller capable of preventing magnetic saturation of an iron core of a series transformer, and a voltage control method.A voltage controller 10 which is connected to a single-phase three-wire distribution line, ch...  
JP2023539233A
-With 1 carrier 2, - one switching switch 20 with one vacuum valve 21 and one bridge switch 25; -1 selector 10, - with 1 pre-selector 40, - with one drive module 30, An on-load tap changer module 1 for an on-load tap changer 9 having: - ...  
JP2023122169A
To provide a tap switching mechanism for a tap selector capable of suppressing an increase in the number of components even when dealing with a variable number of tap points.A tap switching mechanism for a tap selector of an embodiment h...  
JP7332441B2
To provide an on-load tap changer capable of confirming that a tap is changed normal by a changeover switch, an on-load tap changing transformer and a voltage regulating device.An on-load tap changer (3) comprises: a plurality of changeo...  
JP7332510B2
To provide an on-load tap switcher capable of surely preventing changeover switches from being short-circuited with each other when outputting a three-phase AC voltage.An on-load tap switcher (3) configured to output a three-phase AC vol...  
JP7330289B2
An on-load tap changer according to an embodiment comprises a changeover switch and a container. The changeover switch performs a winding tap changing operation. The container contains the changeover switch. The container has a bottom po...  
JP2023114741A
To provide a voltage adjusting device that does not need to connect a series circuit including a serial switch and a resistor to a terminal of primary winding.A voltage adjusting device 1 adjusts an effective value of an AC voltage. A sw...  
JP2023112227A
To provide an on-load tap changer and a transformer capable of suppressing contact damage and overheating and surely suppressing a float voltage.An on-load tap changer disposed in a transformer having a main winding and a tap winding inc...  
JP2023534521A
A switching switch 40 for switching from the first fixed contact 11 to the second fixed contact 12 of the tap transformer 20, a selector 30 for preselecting the fixed contacts 11 and 12 in a non-current state, and a second A plurality of...  
JP7317461B2
To solve a problem in which there is possibility that a porcelain tap changer has low design freedom, high cost, and can be broken during assembly.A tap change base 1 used in oil filled static induction equipment includes a pedestal 2 ma...  
JP2023104564A
To provide an electric operation mechanism and a failure determination method that do not require a dedicated device and require no human determination.In the electric operation mechanism 1, an electric operation device 100 that controls...  
JP7312723B2
To provide a load-time tap switch and a voltage control device in which a switch can be protected with a compact and low-cost structure.A load-time tap switch (3a) includes a switch for switching and selecting a tap included in a seconda...  
JP7312682B2
To provide a tap-equipped transformer that can deal with by a smaller number of tap positions than P×S contained in a tap provided on the primary side for P voltages (P is an integer of 3 or more) on the primary side and S voltages (S i...  
JP7312099B2
To provide a loading state tap changer capable of reducing the number of electric power sources for turning on a switching switch of a tap.A loading state tap changer (3) comprises a plurality of switching switches (ThX_U:X=1, 2, 3, 4, A...  
JP7311877B2
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...  
JP7300942B2
To provide an electromagnetic device capable of increasing a magnetic flux density at a portion where a control magnetic flux is injected from a control core to a main core.A variable reactor 10 that is an electromagnetic device is confi...  
JP7291639B2
To provide an on-load tap changer capable of making diagnosis of whether a polarity of a voltage, switched by a changeover switch is normal.An on-load tap changer (3) comprises: a plurality of changeover switches (ThX_U:X=1, 2, 3, 4, A, ...  
JP2023525029A
[wrap up] A transformer (100, 200, 300, 500) includes a magnetic core (102) having multiple limbs (104-106). The transformer also includes a direct current (DC) bias winding (110) wrapped around one predetermined limb. The transformer fu...  
JP2023523184A
The present invention comprises a first sensor 3 for measuring the current in the first power line 4 of the on-load tap changer 2, a breaking element 5, a controller 6 and a current limiting element 7, said load It relates to an installa...  
JP7280861B2
To obtain a load tap switcher having a configuration that can easily confirm the soundness of a tap switcher using a torque sensor at a relatively low cost and in a short time.In a load tap switching device, in an actual operation mode, ...  
JP7279489B2
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...  
JP2023071405A
To provide an electrically-driven handling device of an on-load tap changer with excellent workability.An electrically-driven handling device of an on-load tap changer contains: a mechanism part; an outer door; an inner door; a substrate...  
JP7279264B2
A switching mechanism for a tap selector of an on-load tap changer according to one embodiment of the present invention comprises a fixed part, a movable part, a biasing member, and a guide. The fixed part has a fixed contact point. The ...  
JP3241817U
An object of the present invention is to provide an oil-filled electrical device that uses vegetable oil as an insulating oil and can suppress an increase in product price. Vegetable oil as insulating oil is filled in a tank of an oil-fi...  
JP7255848B2
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 ...  
JP2023511548A
[wrap up] A magnetic component includes a main magnetic core, a power winding coupled to the main magnetic core, and a variable reluctance magnetic core element disposed within the magnetic flux path of the main magnetic core. A variable...  
JP7242038B2
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...  
JP7240354B2
To provide a static guidance device capable of suppressing an increase of the dimension of at least the diameter direction of the connection between a tap wire and a high voltage conductor.In a connection part between a tap wire 25 and a...  
JP2023025140A
To provide a torque adjuster and a tap changer that can adjust the torque around a drive shaft.A torque adjuster and a tap changer include a drive shaft 4 that rotates about its axis, an adjustment cam 51 that fits on the outside of the ...  

Matches 451 - 500 out of 5,187