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JP2001284146A |
To provide a gas-sealed oil-immersed transformer, which is provided with an on-load tap changer and can prevent violent explosion of the oil tank of the tap changer and the extreme drop in the surface level of insulating oil in the oil t...
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JP2001284145A |
To provide a tap changer, for which the attaching work and replacing work of a moving contact of an outer shaft can be performed easily, in a short working time. A moving contact (second moving contact 4) of an outer shaft 3 is attached ...
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JP2001267150A |
To prevent the occurrence of a deviation between the tap position of a control mechanism and the actual tap position of an on-load tape changer.In a motor-driven operating device 60, a separate automatic-reset torque limiter mechanism (t...
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JP2001267149A |
To provide a tap changing device which can shorten the assembling time of the device itself and a transformer and can stably obtain a driving force even when many or few errors occur in the attaching positions of an operating mechanism, ...
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JP3206692B2 |
PURPOSE: To improve reliability of an apparatus by duplicating the tap runaway monitoring function. CONSTITUTION: A voltage monitor circuit outputs a voltage zero under the condition that a motor is driven when a normal rotation switch 3...
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JP3202200B2 |
To provide a choke coil with no possibility of damages to or drop of a terminal, for simplifying a terminal mounting constitution, and for simplifying the whole assembly work. This chock coil is provided with a ring core 1, having a roun...
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JP2001230132A |
To provide a stabilized voltage supply system for a game machine, which can respond easily at low cost to a the fluctuation of the voltage supplied to the game machines at a brace arranged with a plurality of the game machines.Game machi...
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JP2001223126A |
To provide a motor controller which is capable of improving a motor is performance by obtaining current detection characteristics optimal for motor drive conditions by a single current detector.A flux density inside a core 11 is proporti...
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JP2001509955A |
A power or regulating transformer with voltage regulator includes regulating windings made of a flexible conductor having an electric field containing mechanism that forces the electric field due to the current in the winding to be conta...
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JP2001509956A |
A power transformer or inductor is disclosed. The winding (31) of the transformer/inductor is made of a flexible conductor (38) having electric field containing means forcing the electric field due to the electric current in the winding ...
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JP3190280B2 |
To downsize a mechanism, so that it can be used for a small-capacity transformer or a voltage adjuster, and further, enable a tap to be switched surely and quickly. Opposite to a starting level 18, an index plate 4 is equipped with a plu...
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JP3189542B2 |
PURPOSE: To provide a monitor for an on-load tap changing operation, processing of which is simplified and by which judgment having high accuracy is possible. CONSTITUTION: Each specific data corresponding to a specific data to be monito...
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JP3189541B2 |
PURPOSE: To prevent the malfunction of an on-load tap changer from being misjudged even if an operating mechanism is terminated in an unstable state after it is manually operated by a method wherein a first malfunction diagnosis made aft...
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JP2001509357A |
This invention is related to a device and a method in an electric power plant for protection of an object (1) against over-currents from a network (3) or another equipment included in the high voltage plant, the device comprising a switc...
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JP2001189220A |
To provide transformer equipment, where reactance of a reactor can be easily switched and economical performance and reliability can be improved, by inserting and connecting the reactor with a series exciting circuit of a transformer for...
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JP2001167944A |
To provide a highly reliable series type voltage stabilizing device, which can continuously make voltage adjustment, regardless of the state, such as the current, power factor, etc., of a load and is small in loss and a voltage stabilizi...
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JP2001508238A |
A controllable inductor comprises at least a tubular core (13) a main winding (5) surrounding the core, a control winding (13) passing substantially axially through the core, a ground part (15) arranged inside the main winding and an ele...
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JP2001145264A |
To provide the central control device of a voltage-adjusting device that can appropriately switch the tap of the voltage-adjusting device, stably control the voltage of a power distribution line, and extend the life of the voltage-adjust...
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JP2001135531A |
To reduce the power loss of a switching element. A control transformer PRT 1 is constituted by winding a control winding wire NC around two magnetic legs 21b and 21c, for example, among four magnetic legs of a three-dimensional core 20, ...
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JP2001126936A |
To provide a switching board for switching tap for voltage regulation for pole transformer, with which there is no danger for a high voltage to enter the switching board, and a driver for attaching/detaching short bar for voltage regulat...
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JP2001128327A |
To provide a voltage regulation tap changing work protective plate for a pole transformer, which can mechanically hold a clearance and can be attached, regardless of the shape of the pole transformer. A voltage regulation tap changing wo...
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JP2001505759A |
This invention is related to a device and a method in an electric power plant for protection of an object (1) against over-currents from a network (3) or another equipment included in the high voltage plant, the device comprising a switc...
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JP2001505757A |
This invention is related to a device and a method in an electric power plant for protection of an object (1) against over-currents from a network (3) or another equipment included in the high voltage plant, the device comprising a switc...
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JP2001505758A |
This invention is related to a device and a method in an electric power plant for protection of an object (1) against over-currents from a network (3) or another equipment included in the high voltage plant, the device comprising a switc...
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JP2001093751A |
To provide an on-load tap changing apparatus, capable of discriminating the change times of two or more parallel connected on-load tap changers. The tap changing apparatus having two or more on-load tap changers 2, 3 parallel connected t...
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JP2001093750A |
To provide a contact mechanism, having flat contacts for tap changers which increases the contact number of the contacts and can suppress heating when to energized. This mechanism comprises fixed contacts 1e, 1f to be electrically connec...
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JP3151164B2 |
To cut down the expense of manufacturing and reduce cost by making the device compact and lightweight as a whole, and downsizing the case, and facilitating the handling, and facilitating the manufacture. A common winding 2 which has a pr...
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JP3151619B2 |
To solve problems of weight, costs and welding inharmony due to a large choke having a fixed gap or a small choke having a stepped gap by making up of a high magnetic permeability core having a region of a cross sectional shape with two ...
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JP3143146B2 |
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JP2001037227A |
To attain the maximum power saving effect within a short period of time when an input voltage is higher and control the switching of the unnecessary tapping when an input voltage is low by switching the tap to attain the maximum power sa...
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JP3132616B2 |
PURPOSE: To lower the transportation height of a transformer without using a transportation jig by detachably fixing the lower end of a cylindrical part to the upper cover of a tank. CONSTITUTION: The lower flange 6B of a cylindrical par...
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JP2001015357A |
To reduce an eccentric force acting on an on-load tap changer mechanism and vibrations generated in it and to ensure an arc extinguishing time for a main valve, by a method wherein the movable contact of a vacuum valve is moved in a vert...
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JP2000340435A |
To prevent the generation of any short-circuit accident between taps even when a vacuum valve cannot be shut.A tap switcher at the time of load is provided with a changeover switcher for switching the plural taps of the tap coil of a tra...
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JP2000339045A |
To provide a power circuit capable of always supplying stable power to a load while adjusting a power factor accurately corresponding to a signal level and a load condition.In this power circuit, an input signal whose noise is reduced by...
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JP2000323335A |
To provide an on-load tap changer of a transformer which can cope with an atmosphere where the inside of a transformer vessel is insulated by gas or oil. Transformers insulated by sealed insulating gas 102 or insulating oil 112 are accom...
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JP2000515357A |
The present invention relates to a power transformer/reactor ( 14, 15, 16 ) for high voltages, comprising at least one winding having at least one current-carrying conductor. The winding comprises a solid insulation ( 7 ) surrounded by o...
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JP2000286135A |
To provide a load-time tap change-over device which can prevent an accident beforehand by accurately comprehending electrical phenomenon of a main body thereof, and can previously determine a suitable inspection and replacement timing. C...
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JP2000277357A |
To efficiently control voltage by a method, wherein at least a half of the composition is constituted by a Fe group nano-crystal alloy thin band composed of crystal particles of an average particle size of a predetermined value or less, ...
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JP2000269052A |
To diagnose abnormality of a tap-changer by obtaining time of short circuit between taps. A primary current, secondary current and tap numbers of a loaded tap-changing transformer are detacted, and the primary current value -the secondar...
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JP2000269051A |
To provide a plurality of no-voltage tap-changers in a transformer to obtain four levels of voltage, with one tap doubling prescribed voltages of the transformer. Changing sections of this no-voltage tap-changer are composed of three blo...
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JP3089879B2 |
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JP2000253576A |
To automatically make tap-setting according to the input voltage and change the tap-setting following the fluctuations in the input voltage. An input voltage is measured (S1), and referring to a table listing tap setting numbers and thei...
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JP2000243635A |
To extract a large secondary output power with an exciting current or a small current of a primary input winding by attaching an input reverse magnetic force winding to a transformer. An AC input reverse magnetic force winding 3 is attac...
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JP2000511347A |
PCT No. PCT/SE97/00802 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed May 16, 1997 PCT Pub. No. WO97/44795 PCT Pub. Date Nov. 27, 1997A controllable inductor comprises at least a tubular core, a main winding (1) sur...
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JP2000511390A |
The present invention relates to a rotating asynchronous converter and a generator device. The converter comprises a first stator connected to a first AC network with a first frequency f1, and a second stator connected to a second AC net...
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JP2000511348A |
A controllable inductor comprises at least a tubular core, a main winding surrounding the core and a control winding passing substantially axially through the core. A yoke of a material having a high magnetic permeability is arranged to ...
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JP2000511392A |
An electric high voltage AC machine intended to be directly connected to a distribution or transmission network ( 16 ) comprises at least one winding. This winding comprises at least one current-carrying conductor, a first layer having s...
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JP2000511387A |
The present invention relates to a power transformer/reactor ( 14, 15, 16 ) for high voltages, comprising at least one winding having at least one current-carrying conductor. The winding comprises a solid insulation ( 7 ) surrounded by o...
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JP2000511349A |
The present invention relates to a power transformer/reactor ( 14, 15, 16 ) for high voltages, comprising at least one winding having at least one current-carrying conductor. The winding comprises a solid insulation ( 7 ) surrounded by o...
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JP2000511391A |
The present invention relates to a rotating asynchronous converter and a generator device. The converter comprises a first stator connected to a first AC network with a first frequency f1, and a second stator connected to a second AC net...
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