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JP3348478B2 |
PURPOSE: To inhibit the unbalance of a current allotment due to a circulating current in a short circuit to prevent the generation of a failure in the case of the title stationary induction apparatus of such a constitution that this shor...
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JP3348654B2 |
To make it possible to achieve high efficiency over the wide load range with the small configuration, by providing the first selecting means which selects any of the input terminals of the primary winding, and the second selecting means ...
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JP3346780B2 |
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JP3343945B2 |
PURPOSE: To provide a transformer winding wire which is constant and lessened in impedance between a primary and a secondary winding, very small in impedance change caused by the change of a primary tap, and set to zero in primary isolat...
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JP3343083B2 |
To control voltage over a wide range, independently of the existence and power factor of a load without preparing a tap for adjusting the voltage of a transformer. A 1st magnetic circuit is constituted in that cut faces 15 of 1st and 2nd...
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JP3342805B2 |
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JP3343917B2 |
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JP3343084B2 |
To provide a magnetic circuit structure for easily and economically manufacturing the magnetic circuit of three-phase crosslinked magnetic flux control transformer, without using more cores than necessary. A three-phase core 16, constitu...
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JP2002319512A |
To suppress temperature rise at the time of changeover from a first tap to a second tap to contrive miniaturization of an on-load tap changer.In an on-load tap changer, a second tap is operated next to a first tap 13 insulated with insul...
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JP2002280229A |
To commonly use a changeover switch in gas insulation and an oil insulation by reducing in size the dimension of the switch using a vacuum valve in a cut-off unit of an on-load tap changer.The on-load tap changer is insulated by the insu...
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JP2002237423A |
To provide a transformer which is equipped with separate windings that have a high inter-winding withstand voltage and a low inter-winding capacitance so as to have a very low and controlled inductance leakage and a high coupling coeffic...
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JP2002526912A |
(57) [Summary] A high power induction device having a magnetic path, a main winding, and one or more adjusting windings surrounding a magnetic path portion. A control device is coupled to the magnetic path to selectively pass the magneti...
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JP3311391B2 |
PURPOSE: To control the spatial distribution of a leakage magnetic flux related to a high-frequency switching power converter, by providing a conductive medium near a magnetic medium and a coil, so that a border which confines such magne...
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JP2002209314A |
To provide a power-receiving and transforming device which enables a test of a transformer single body safely without removing an incoming cable in the case of a periodic test of a transformer or installing a grounding apparatus on the t...
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JP2002204575A |
To provide a voltage regulator which can maintain a voltage regulating function regardless of a system changeover on a distribution line and the installation state of a distributed power supply.This voltage regulator is a tap-changing vo...
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JP2002198230A |
To provide a changeover-confirming mechanism and a protective system, with which a small-sized safe on-load tap changer provided with an additional fault-preventing mechanism that can prevent the occurrence of serious faults, even if the...
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JP2002184629A |
To reduce installation space.A transformer tank 1 is divided into three chambers 12 to 14, and the first divided chamber 12 is provided with a space, including the bottom of the transformer tank to the inner wall surface of a transformer...
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JP2002175749A |
To provide a on-load tap switch having a small and simple constitution and enhanced reliability.The tap switch to work for a transformer having a plurality of taps from the windings is composed of a switching apparatus to change over one...
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JP3292430B2 |
PURPOSE: To exactly grasp the operation state of a high-voltage automatic voltage adjuster by collecting the data for grasping the operation state of the high-voltage automatic voltage adjuster installed on a high-voltage distribution li...
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JP2002516479A |
A variable inductor with a saturable core having three legs, including a center leg and two outer legs. A control winding is wound on the center leg and two outer windings are connected in parallel and wound on the outer legs. The induct...
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JP3287568B2 |
PCT No. PCT/SE93/00609 Sec. 371 Date Jan. 3, 1995 Sec. 102(e) Date Jan. 3, 1995 PCT Filed Jul. 2, 1993 PCT Pub. No. WO94/01878 PCT Pub. Date Jan. 20, 1994.A tap selector for an on-load tap changer includes two tap selector shafts (3, 4) ...
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JP3289268B2 |
PURPOSE: To miniaturize a tap change-over switch of a neutral point grounded reactor having dual rated current specified reactor and a resistor to reduce the size of the neutral point grounded reactor. CONSTITUTION: The neutral point gro...
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JP3287957B2 |
PURPOSE: To provide an AC arc welding machine capable of appropriately changing the gap according to the position of a movable core with a simple structure at a low cost. CONSTITUTION: A transformer having a fixed core 1, primary and sec...
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JP2002158124A |
To provide an inductance component whose characteristics do not deteriorate by reducing the limitation in the shape of a permanent magnet to be installed, and inhibiting the generation of heat of the permanent magnet by magnetic flux due...
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JP3285977B2 |
PURPOSE: To provide an energy storage apparatus of a on-load tap changer having an excellent transmission efficiency. CONSTITUTION: The loading points of an eccentric cam 2 and an energy storage spring 11a are matched, a winding case 5 i...
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JP3283783B2 |
To provide a magnetic flux control type variable transformer for controlling voltage at high speed without taps for voltage adjustment of a transformer. A variable transformer have a first magnetic circuit and a second magnetic circuit, ...
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JP2002124420A |
To provide a tap selector that can be made compact while the selector maintains prescribed dielectric strength.Lead terminal attaching sections 22a respectively provided at the outer end sections of fixed contacts T1a-T10a are bent perpe...
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JP2002124422A |
To provide a loaded tap changer which has a small and simple constitution and an excellent breaking performance and high reliability.A cam 27 is disposed at the center of a driving shaft 126 and four driving flanges 8a to 8d are connecte...
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JP2002124421A |
In an induction device, in which a cable is used for winding and which is advantageous in an insulating structure and excellent in environment, firstly, to realize the induction device having a small impedance fluctuation in adjusting vo...
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JP3275332B2 |
PURPOSE: To monitor the voltage adjustment operation easily by a method wherein the detected data of current and the detected data of voltage are calculated backward with the ratio of current transformation and the ratio of voltage trans...
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JP3268975B2 |
To provide a power saving apparatus having a transformer which is never be open and hence does not break a contactless switch even at a low load state with a current below the min. load current which will not perfectly turn on this switc...
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JP2002083722A |
To provide an inductor and a transformer where a permanent magnet for applying a magnetic bias is arranged in the air gap of a magnetic core, and which can reduce influences of the magnetic field of a excitation coil on the permanent mag...
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JP2002083724A |
To provide a magnetic element which can exhibit magnetic bias effect over an entire drum-shaped core piece, minimize magnetic saturation, and be made inexpensive and small in size and weight.The magnetic element includes a magnetic core,...
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JP2002075750A |
To provide a transformer, which can easily make leakage inductances variable and a power unit, which can effectively utilize the capacity of the transformer.The transformer 10 is provided with bobbins 12 and a core 14. The center shaft o...
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JP2002034146A |
To estimate the allowable time in operating and the degree of deterioration of a transformer, for an on-load tap changer, and a bushing.The transformer load monitor controls the operating conditions for a cooler 2 connected with a system...
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JP2002023864A |
To provide an on-load tap changer(LTC) controller of a three coil transformer capable of automatically controlling the voltage of a bus to a set voltage when buses connected to the secondary side of a three-coil transformer are both oper...
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JP3245880B2 |
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JP2002008838A |
To improve a temperature uniformity in the width direction of strip.The electromagnetic induction heating device for metal strip 4 moved in a specific direction has at least one electric coil disposed in opposed to at least one surface a...
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JP2001526835A |
(57) [Summary] At least one tubular core 10, a main coil 5 wound around the core, and extending substantially axially through the core, and returning between the core and the main coil and outside the core. A controllable inductor that i...
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JP2001525611A |
A high power static electromagnetic device with variable inductance has a magnetic circuit with a flux bearing region. A main winding and at least one control winding surrounds the portions of the flux bearing region. A control device is...
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JP2001338816A |
To lead out a tap terminal for a stationary induction apparatus without depending upon brazing while improving the degree of freedom of the number of the turns of a tap led out.A winding 1 for the stationary induction apparatus is consti...
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JP2001524748A |
An electromagnetic device comprises at least one magnetic circuit (1) and at least one electric circuit (2, 3) comprising at least one winding (4, 5). The magnetic and electric circuits are inductively coupled to each other. The device c...
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JP2001326130A |
To provide a single-phase power detector which automatically detect the single-phase power of a three-phase motor for driving tap, which drives the on-load tap changer of an on-load tap changing device from a desired interphase, correspo...
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JP3230647B2 |
PURPOSE: To provide a DC reactor with magnetic bias being employed in an inverter circuit in which the permanent magnet is not demagnetized and saturation of flux in the core is retarded. CONSTITUTION: The DC reactor comprises a core str...
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JP2001519970A |
A tubular core (6) for a controllable inductor with a main winding (1) surrounding the core and a control winding (7) passing substantially axially through the core. The core (6) is capable of receiving a magnetic flux from the main wind...
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JP3220984B2 |
A rectifying saturable reactor generates a magnetic force in a magnetic iron core in response to a current that flows through an electronic circuit. The saturable reactor makes use of saturable magnetic flux in view of a hysteresis loop ...
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JP2001518700A |
The invention relates to a method for regulating an induced voltage in transformer, alternatively reactive power of a reactor, wherein a winding (5; 26) is achieved with an insulating electric conductor including at least one current car...
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JP2001518699A |
An induction controlled voltage regulator, primarily for high-voltage regulation, includes a magnetic circuit based upon a core (1) having one or more flux paths or legs (2) surrounded by high and low voltage windings (3, 15). The leg (2...
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JP2001518701A |
(57) [Summary] An inductively controlled voltage regulator primarily for high voltage regulation, an iron core with two or more magnetic flux passages or legs (2) having at least one main winding (3) that supplies the output voltage (U)....
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JP3218607B2 |
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