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JP09199336 |
To provide a transformer assembled by easily supporting a toroidal coil in a casing. A transformer includes a toroidal coil 1 having insulators 12 and 12 provided on both sides, and a casing 2. The casing 2 includes an upper casing and a...
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JP09190935 |
To operate a plurality of taps through one control command from an operator by setting in advance the reference voltage value on the secondary side of a transformer and the voltage change value for one tap and outputting a control comman...
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JP09186028 |
To downsize a transformer and lessen the number of switches so as to simplify the constitution by arranging a tapped winding outside a series- parallel changeover winding. A tapped winding 15 is arranged outside a high-voltage winding 14...
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JP09171930 |
To obtain a tap selector drive mechanism for on-load tap changer in which the movable contactor of the tap selector is prevented from being opened inadvertently during conduction, which causes an accident. A movable contactor is driven b...
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JP09162049 |
To make each contact terminal connect efficiently with a prescribed number of tap terminals by a method wherein the contact terminals are respectively made to correspond to the tap terminals of each column to mount respectively the conta...
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JP09162039 |
To prevent both the contraction of the life time of a vacuum valve of a gas-insulated transformer and the damaging to its changeover switch tank by the variation of its gas pressure, by maintaining always the differential pressure betwee...
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JP09162038 |
To provide a compact stationary induction apparatus easy to perform its inside wiring connection works. This induction electric apparatus has a hermetically shelled enclosure 5 with a stored insulation medium, a principal-electric-appara...
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JP09162044 |
To change a voltage, which is outputted in a secondary winding, with low control power by a method wherein a primary winding is wound on first and fourth column magnetic materials and the secondary winding and a control winding are wound...
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JP09153424 |
To increase harmonic current absorption capability by connecting a load with a parallel circuit of a first coil connected to a power source and a second coil connected to a capacitor. A parallel circuit of a first coil 2 and a second coi...
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JP09153423 |
To provide a higher harmonic current inhibiting device, which has a large inhibiting power to a higher harmonic current, and can be miniaturized and lightened. This inhibiting device is constituted into a structure, wherein a primary win...
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JP09153422 |
To miniaturize and lighten a single-phase three-wire system auto-transformer by a method wherein in the connection of the auto-transformer, the 0-phase terminal of a circuit is not connected with the auto-transformer. In the case where a...
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JP09148151 |
To facilitate the adjustment of consumption amount of an arc-proof metal by previously inserting an adjusting spacer between a base metal fitting and a holding member. A plurality of screw studs provided on the other surface of a base me...
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JP2653585 |
PURPOSE: To shorten the electricity-feeding time of a current-limiting resistance, to completely eliminate the generation of a making arc and to enhance a withstand voltage between vacuum valve contacts in an on-load tap changer accordin...
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JP09129450 |
To provide an inductive element which can change inductance of a major conductor from external part where is insulated from the major conductor. An inductive element provides a magnetic body 4, a major conductor 5 which is so arranged as...
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JP09122925 |
To facilitate flash welding even with scale existing on the end face of a member to be welded. The method for starting the flash welding is so structured that two members 1, 2 to be welded are each clamped by electrodes 3A, 3B connected ...
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JP09113204 |
To provide a differential transformer wherein a moving core and its supporting part are installed at the outer periphery of a core for shortening the total length. This transformer is constituted in such a way that a cylindrical bobbin 1...
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JP09115738 |
To provide a gas insulated transformer whose capacity can be increased without enlarging a tap changer. A transformer main body constituted by winding a low volage winding 2 and a high voltage winding 3 around an iron core 1 is accommoda...
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JP09115748 |
To provide an energy conversion equipment for power generation excellent in efficiency wherein a rotary part is unnecessary and a mechanically simple structure is used. A magnetic flux interlinked with an output coil 3 wound around a mag...
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JP2635867 |
PURPOSE: To miniaturize by a method wherein a cam secured to a drive which is directly coupled with an energy storage device and having an opening or closing groove for opening or closing a main resistance valve is provided, a rib part o...
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JP09092550 |
To provide a resin-molded coil, which is superior in heat dissipation property, insulation resistance, withstand electromagnetic mechanical force and the workability at the time of the manufacture of the coil, and a method of manufacturi...
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JP09082537 |
To facilitate load torque measurement and miniaturize the measuring apparatus by measuring an input of a driving motor using a transducer and by detecting the load torque of a mechanism part of an on-load tap changer. A current and a vol...
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JP09084350 |
To reduce the setting area of a transformer by providing a positive- side rectifier, which is connected to a tap terminal and conducts the DC current in the forward direction of a load, and a reverse-side rectifier, which is connected to...
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JP09074754 |
To provide a switching type power supply device wherein switching noises of a main switching element can be emitted at a similar level without providing a shield winding between primary and secondary windings of a switching transformer. ...
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JP09070172 |
To provide a regulator which can arbitrarily or continuously adjust the magnetic flux of a transformer or a motor in order to output single-phase or multiphase AC power or AC signal as an input after arbitrarily and efficiently adjusting...
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JP09063868 |
To prevent chattering at the time of closing a vacuum switch and to ensure a stabilized trip performance regardless of the contacting state of the contact. When a disc cam 40 is rotating, rollers 51, 52 move in the switching groove of th...
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JP09063867 |
To obtain a stationary induction machine in which the connection between a tap changer and the tap of winding can be facilitated while reducing the overall size and inspection of machine can also be facilitated. A tap changing mechanism ...
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JP09063869 |
To detect the tap position accurately at all times by prohibiting updating the detected tap position based on an output read out from a dial switch during a period when the operating time of an on-load tap changing transformer is being c...
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JP09045553 |
To relax a leakage magnetic field component in the direction of radius near a tap winding of an outer winding by locating a magnetic shield along the inner diameter of the tap winding. An inner winding 3 and outer windings 4, 5 divided i...
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JP09035957 |
To reduce perfluorocarbon liquid lagely even when this electrical equipment is scaled up and capacity thereof is increased by forming a connecting section cormecting a vessel for a switching appliance and a vessel for a transformer and f...
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JP09035958 |
To provide an energy converter, which may be formed by mechanically simple constitution without requiring a rotary section and is used for power generation. This device has a magnetic core member 21, an output coil 3 wound on the magneti...
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JP09017659 |
PURPOSE: To prevent the floating potential of a tape winding, to enhance its reliability and to reduce it by connecting a second change-over contact element to a first change-over contact element through an arrester at the time of changi...
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JP09017660 |
PURPOSE: To greatly improve reliability, a response, weight, a heat loss and a cost by insulating output-side power sources from each other and individually providing the output-side power source between respective gate driving circuits ...
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JP09007841 |
PURPOSE: To make it possible to change safely a tap by a method wherein an insulating barrier is provided directly under an electrical wire for connecting the power supply sides of a high-voltage bushing and a high-voltage cutout with ea...
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JP09007863 |
PURPOSE: To enable higher harmonics to be less generated by a method wherein a tap winding is provided in the delta winding of a primary alternate current winding of extended delta-connection optional in phase angle, and a tap winding is...
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JP09009527 |
PURPOSE: To provide a distribution system by which a power can be supplied to an emergency load system when a power supply is interrupted from an uninterruptible power supply apparatus which supplies power to an uninterrupted load system...
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JP2595915 |
PURPOSE: To provide a current-transformer apparatus which does not depend on the number of a current-transformation ratio, whose large size is avoided and in which an operation to change the current-transformation ratio is simpli fied. C...
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JP08339922 |
PURPOSE: To improve the working efficiency for passing lead wires for three phases through the interior of a connecting tank for connecting tanks by passing the lead wires for connecting the tap windings of transformer windings of the re...
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JP08339926 |
PURPOSE: To provide the on-load tap changer, which can be maintained and inspected by removing a breaking part without the service interruption of a transformer. CONSTITUTION: A breaking part 101 for switching current is provided with ma...
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JP08336232 |
PURPOSE: To detect the inner fault of a phase regulation transformer reliably by deciding whether a fault is present in the phase regulation transformer based on the current flowing through a regulating winding to be connected in paralle...
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JP08335521 |
PURPOSE: To prevent an accident from being erroneously judged as an internal accident even if the second high harmonic suppression method is used by preventing differential current from flowing to the current transformer of a series tran...
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JP08331712 |
PURPOSE: To provide a movable type distribution board in which a power supply having plural kinds of rated voltages can be used by dividing a voltage from one main power supply and at the same time a distribution board main body can be f...
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JP08330157 |
PURPOSE: To provide a tap voltage indicator for transformer in which the operation is simplified without requiring the mounting/demounting work of component by turning an indicator while fixing to a fixing base and shifting a desired tap...
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JP08316063 |
PURPOSE: To control the voltage as low as possible within a range causing no trouble in actual power consumption by branching the output terminals from such number of turns points of coil as producing secondary load current and voltage c...
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JP08316064 |
PURPOSE: To provide a manual torque detector which can be mounted easily even on an existing on-load tap changer. CONSTITUTION: The on-load tap changer comprises a portable torque detector 17 including a torque sensor 12 built in a manua...
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JP08316049 |
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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JP08316048 |
PURPOSE: To lower the height of tank and to reduce the quantity of material required for production of heat slinger along with the quantity of insulating oil at the time of assembling a tap changer and the switching section. CONSTITUTION...
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JP08288153 |
PURPOSE: To provide a stationary induction apparatus in which load loss and short-circuit mechanical force in the axial direction are reduced and the manufacturing steps and its cost are also reduced. CONSTITUTION: A low-voltage winding ...
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JP08288154 |
PURPOSE: To effectively switch connection between windings during loading without power failure by constituting a switching operation circuit by only a low-loss high-speed operation type switch element such as a semiconductor element hav...
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JP08273948 |
PURPOSE: To obtain a fixed structure with a large fixing strength and less aging for the connection between a movable core in a movable core reactor and a drive shaft for driving the movable core. CONSTITUTION: A movable core reactor con...
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JP08273089 |
PURPOSE: To easily install this device even at an existent loading time switcher as well by providing a transmitter equipped with a distortion gauge for detecting distortion caused by torque on the surface of a shaft and an antenna. CONS...
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