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Document Title |
JP5187750B2 |
To allow a magnetic-saturation type current limiter using saturable reactors, which recovers in a short time and has a self safety function so as to independently handle a fault current without a circuit breaker, while reducing the requi...
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JP2013065763A |
To provide an on-load tap changer incorporating a covered electrode which is free of cracks in or separation of an insulating material, and therefore exhibits excellent insulation strength.A fixed contact 9 is fitted to a column 11 penet...
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JP2013058527A |
To provide a novel transformer capable of reliably preventing a solid matter such as metal powder from entering a transformer tank via a conservator.The transformer body 20 and the changeover switch housing chamber 31 of an on-load tap c...
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JP5159984B1 |
A transformer (50) includes a core (10), a primary winding (3) wound about the core (10), a secondary winding (4) wound about the core (10) in parallel with the primary winding (3), and a differential winding (5) wound about the core (10...
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JP5153867B2 |
The invention relates to a switching arrangement with two operational settings for switching over a winding during transformer operation, wherein during the switching-over a transient current commutates from one current path to another c...
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JP2013503600A |
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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JP2013012507A |
To provide a simple and minimized apparatus for tap change.A tap changing apparatus 1 comprises: a rotatable rotation axis 3; a rotation driving part 4 for letting the rotation axis 3 rotate; a plurality of fixed electrodes 5 in a cylind...
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JP2013500594A |
The invention relates to the arrangement of a stepping switch on a control transformer, wherein either only the mechanical contact system (8) of the stepping switch or also its load changeover switch (7) is or are arranged within the tan...
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JP2012256681A |
To provide a DC reactor capable of improving distortion in a DC component and an AC component of a main winding current run through a main winding and achieving size reduction.The DC reactor includes: a core 1; a main winding 2 wound aro...
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JP5095680B2 |
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JP2012238653A |
To provide a tap switching device for switching energization with a simple constitution at high accuracy.A tap switching device comprises a tap selector and a changeover switch. The changeover switch switches a tap, in which a load curre...
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JP2012222064A |
To obtain two outputs from one input of an energy storage mechanism of a changeover switch of a loading-time tap changer.The energy storage mechanism comprises: an input disc 210 rotating in a circumferential direction; a first crank 110...
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JP2012523681A |
The invention relates to an on-load tap changer comprising semiconductor switching elements for uninterrupted switching between winding taps of a tapped transformer. According to the invention, contact bars are provided which extend in t...
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JP5037100B2 |
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JP4963300B2 |
To provide an on-load tap changer which suitably control opening/closing operation of a contact and eliminates a fault caused by sludge production. The on-load tap changer includes a container 23 filled with insulating oil and a changeov...
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JP4939566B2 |
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JP2012094782A |
To provide an LTC (on-Load Tap Changer) with a simple structure, which can suppress the usage of SF6 gas.The LTC comprises: a first insulating cylinder; an upper lid which closes an opening of the first insulating cylinder; a support pla...
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JP4932489B2 |
There is disclosed a voltage summer including a transformer having a primary side and a secondary side, wherein a first voltage to be summed is connected to the primary side and a second voltage to be summed is connected to the secondary...
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JP4934601B2 |
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JP4904329B2 |
A transformer includes a bobbin unit, a primary winding, a secondary winding, and a core unit. The bobbin unit has a first winding portion and a second winding portion. The primary winding is wound around the first winding portion of the...
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JP2012049238A |
To allow the variable range of inductance to be broadened while also maintaining high magnetic shield performance in a transformer.A transformer 4 comprises: a lower collar part 421 secured to a base 41 and facing the base 41; a coil fix...
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JP4874493B2 |
The invention relates to a magnetically influenced current or voltage regulator comprising a body (1) which is composed of a magnetisable material and provides a closed, magnetic circuit, at least one first electrical conductor (8) wound...
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JP2012028639A |
To provide a gas-insulated on-load tap changer which can be made compact, can suppress temperature rise of a current limit element even when insulating gas with low heat capacity is used, and can provide a good maintenance workability.A ...
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JP2012503317A |
The invention relates to a manual drive for step-by-step operation, without any power, of a tap changer (1) on a tap-changing transformer. The manual drive has a position indication wheel (4) which is used not only, in conjunction with a...
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JP2012501069A |
An on-load tap changer with semiconductor IGBT switching elements for uninterrupted switching over between winding taps of a tapped transformer, has two load branches connectable with the respective winding taps and each load branch is e...
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JP2011192839A |
To provide transformer facilities with a load tap changer, constituted so that when a component such as a diverter switch of a changeover switch of an on-load tap changer is maintained or replaced in the transformer facilities with the l...
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JP2011187889A |
To provide a tap selector of an on-load tap changer such that connection structures of input lines are simplified to improve operability and an assembly state is confirmed directly from outside.An insulating shaft 4 has one end and the o...
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JP4774437B2 |
The accumulator has longitudinally movable lift and leaping carriages (3, 16) fixed in connection with a drive shaft, where the carriages are guided through three parallel guide rods extending in the direction of motion of the carriages....
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JP4765891B2 |
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JP4767141B2 |
A device and method for controlling the changing operation of an on-load tap changer (LTC) that interrupts current passing the current zero point of a commercial frequency are provided. The device may include a current zero point detecti...
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JP4764686B2 |
A circuit (E) for supplying variable loads comprises a first condition having two connections to at least one current source and three connections to a second source. Connection (8) is made to two loads (R2,R3), third and fifth connectio...
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JP2011171560A |
To provide an environment adaptive type on-load tap switching device which is improved in dielectric strength voltage of an insulated drive shaft portion of a selector switch portion, and further has insulation reliability.The on-load ta...
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JP4764303B2 |
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JP4764245B2 |
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JP4764318B2 |
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JP2011159647A |
To provide a transformer device having a built-in tap changer capable of ensuring sealability even in special conditions in a cold district.The transformer device includes a tap changer including a transformer tank 1 for housing the tran...
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JP4750903B2 |
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JP4745201B2 |
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JP4719045B2 |
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JP4703473B2 |
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JP4702834B2 |
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JP4693901B2 |
An energy storage device has a power storage spring provided between an elevator slide and a step-change slide. On the face of the step-change slide (9) facing the drive shaft, are two rollers (12,13), which run in a rotatable link (14),...
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JP4682252B2 |
A load-tap changer has a power store for interruption-free switching between different winding tappings of a variable/tapped transformer under load, in which the load tapped changer has an insulation cylinder in the wall of which are arr...
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JP4680261B2 |
It is intended to provide a tap change operation monitoring apparatus for an on-load tap changer which can employ relatively simple and low-cost torque sensing means by mitigating an accuracy requirement with regard to detecting a starti...
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JP4678613B2 |
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JP2011512028A |
An on-load tap switch switching mechanism 200 is an annular cam 210 defining a plurality of raised portions 311 and a switch assembly 220 that is at least partially located inside the annular cam and is rotatable relative to the annular ...
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JP4664928B2 |
The switch has a set of movable contacts (M1, M2) with a connection selector. An auxiliary switch (S) is formed via fixed contacts that are provided between the movable contacts (M1) and transition resistance (R1), and via the movable co...
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JP4660490B2 |
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JP4660313B2 |
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JP2011054835A |
To save space, reduce the number of parts and man hours, achieve a good heat dissipation and good insulation performance without receiving any internal pressure restriction, and carry out large capacity formation.A changeover switch incl...
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