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Patent Searching and Data


Matches 501 - 550 out of 6,291

Document Document Title
JP4621167B2  
JP2011015504A
To provide a method for setting a tap of an arc-suppressing reactor wherein earth capacitance is easily and quickly measured in safety and this earth capacitance is utilized.A zero-phase voltage or zero-phase current in a transmission sy...  
JP2011009432A
To provide a variable reactor which is applied, for example, to an induction heating apparatus and can widely adjust an inductance value in a simple structure at low manufacturing cost.The variable reactor basically includes tabular main...  
JP4611869B2  
JP4611465B2  
JP2010283226A
To detect even fault such as generating an excessive torque right after actuation when determining whether an on-load tap changer is abnormal by observing electric power of an electric driving device.A fault detection system 10 includes ...  
JP2010278273A
To provide a variable voltage type transformer allowing the voltage of a secondary winding to be steplessly changed by simplifying the structure without needing another power source.This variable voltage type transformer includes: an iro...  
JP4588880B2  
JP2010267957A
To provide a tap changer facilitating access to a measuring point for measuring a contact sequence in the tap changer. The tap changer 4 includes a cylinder 1 and a shaft 2 that is rotatably arranged inside the cylinder; the cylinder 1 i...  
JP2010263024A
To provide a tap selector having a roller contact device, which suppresses material cost and processing cost for a current collection contact and maintains contact resistance for a long period even in insulating oil. While the current co...  
JP4583279B2  
JP2010258266A
To provide a tap switching device that can be made compact.A changeover switch 22 of the tap switching device 101 includes an output member 89 which rotates on a predetermined axis 71, a plurality of fixed contacts 63 electrically connec...  
JP2010258216A
To improve reliability of a roller contact device by avoiding the situation in which a base portion of a roller shaft collides with a storage hole of a body fixed to an insulating rotary shaft each time a tap is switched.The roller conta...  
JP2010251642A
To hold down material cost, etc. by making a current collecting contact point of a tap selector thinner.The current collecting contact point 2, a tap change supporting contact point 3 and a fixed contact point 4 are formed into the same ...  
JP4558764B2  
JP2010192813A
To simplify structure in a three-phase voltage-controlling transformer assembly for controlling an output voltage at a non-step mode.The three-phase voltage-controlling transformer assembly includes three sets of first to third transform...  
JP2010182069A
To provide a voltage control device for providing a power (voltage) with high quality to each wiring system connected to the two secondary coil side of a three coil transformer.This voltage control device is provided with: a voltage meas...  
JP2010182905A
To achieve a simple configuration as well as stepless control of the output voltage, in a voltage controlled transformer.The voltage controlled transformer includes: a transformer formed by winding an input winding AN1 and an output wind...  
JP2010527159A  
JP4518329B2  
JP4519545B2  
JP4518907B2  
JP4508983B2  
JP4506352B2  
JP4498812B2  
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 ...  
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...  
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...  
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 ...  
JP4469512B2  
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...  
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...  
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 ...  
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...  
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 ...  
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...  
JP4445393B2  
JP4421931B2  
JP4411460B2  
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...  
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...  
JP4403175B2  
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...  
JP4398250B2  
JP4382420B2  
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...  
JP4374620B2  
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...  
JP4368051B2  
JP4369028B2  

Matches 501 - 550 out of 6,291