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JP2010147074A |
To prevent oxidizing degradation of insulating medium and degradation in the insulation performance. A tap selecting apparatus 101 includes a case 23 filled with insulating medium 15; a tap selector 21 which is arranged outside the case ...
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JP2010141214A |
To provide a contact load measuring apparatus that facilitates measuring the load and displacement of a contact of an oil tank without applying a load to portions other than the contact of the oil tank of an on-load tap changer. The cont...
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JP2010135445A |
To provide an on-load tap changing device which is compact, generates low switching noise, and can optimize a cutoff speed. The on-load tap changing device is characterized in that the cutoff speed can be optimized and noise due to a cut...
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JP2010123587A |
To provide an electromagnetic device which can continuously increase and decrease a reactance value without being influenced by a current of an AC main winding and reduces control loss.The electromagnetic device has a structure in which ...
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JP4469512B2 |
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JP2010103395A |
To provide an inexpensive and compact on-load tap changing device.The on-load tap changing device is characterized in being composed of one current-limiting resistance by arranging the current-limiting resistance 408 on an insulating pla...
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JP2010103812A |
To provide a switching element which causes a heavy current to be flowed although being small-sized.In a liquid 3 in which particles are dispersed, a pair of electrodes 41, 42 are disposed while facing to each other at a predetermined fa...
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JP2010093083A |
To provide a coil component with a wide variable range of inductance by a simple structure.The coil component 10 includes a first magnetic core 2 in a closed magnetic path structure, a first coil 3 wound to the first magnetic core 2 and ...
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JP2010093050A |
To provide a compact tap changer capable of changing taps at high speed and quietly while having a simple configuration with less driving mechanism compared with conventional ones, and to provide an inexpensive, quiet, and space-saving o...
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JP2010080470A |
To provide an existing automatic voltage regulator for power distribution in which a protective cover is easily attached to a tap position inspection window even for a field assembled article.In the automatic voltage regulator for power ...
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JP2010080590A |
To provide a change-over switch for an on-load tap changer, capable of arbitrarily setting a period of maintaining a contact state of a movable contact to a fixed contact.The change-over switch for an on-load tap changer is constituted b...
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JP4445393B2 |
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JP4421931B2 |
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JP4411460B2 |
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JP2010027960A |
To make an electrically neutral position variable after completing a product by moving a cylindrical bobbin having a transformer coil around a bobbin tube having a rod-like core.In the differential transformer structure, a transformer co...
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JP2010017016A |
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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JP4403175B2 |
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JP2010011729A |
To provide a poly-phase circuit apparatus having no defect pointed out in conventional arts.The three-phase rectifying apparatus 9 includes three heating circuits which are constituted out of a three-phase primary winding 2 connected wit...
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JP4398250B2 |
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JP4382420B2 |
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JP2009290005A |
To provide an on-load tap changer capable of surely preventing occurrence of shutoff mistake even when a direct current is carried to a main valve, and exhibiting excellent insulation performance and stable shutoff capability.This on-loa...
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JP4374620B2 |
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JP2009277869A |
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 changeove...
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JP4368051B2 |
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JP4369028B2 |
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JP4364681B2 |
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JP4364702B2 |
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JP2009267333A |
To provide an existing automatic voltage regulator for power distribution in which work for providing a protective plate to a viewing window through which a check of a tap position is greatly simplified.A bolt pass-through hole 312a is f...
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JP4359132B2 |
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JP4352478B2 |
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JP4352476B2 |
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JP4354624B2 |
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JP4352477B2 |
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JP2009238966A |
To provide an A.C./D.C. converter can reduce power loss and facilitate miniaturization.This A.C./D.C. converter is provided with: a D.C. winding 1; a D.C. iron core 3 for winding the D.C. winding 1 around it; an A.C. iron core 5 connecte...
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JP4334149B2 |
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JP2009218345A |
To provide a vacuum switch type on-load tap changer which can prevent deterioration of an insulation oil.The on-load tap changer 1 includes a tap selector 2 and a vacuum switch type changeover opening and closing device 3. An opening and...
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JP4330840B2 |
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JP4319351B2 |
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JP4316024B2 |
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JP4317980B2 |
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JP4316553B2 |
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JP2009176993A |
To provide a composite common-mode coil whose leakage inductance magnitude can be changed and whose volume and manufacturing cost can be reduced.The composite common-mode coil includes a bottom platform, a coil-onboard body, and an iron ...
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JP2009177979A |
To provide a transformer for a compensation which is installed to an AC substation for an electric railway for improving a power factor to apply to a reactive-power compensator and is capable of ensuring a constant reactance ratio at all...
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JP4306826B2 |
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JP2009527907A |
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JP4289514B2 |
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JP4287924B2 |
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JP4282795B2 |
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JP4282148B2 |
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JP4280040B2 |
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