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JP2003134615A |
To provide a low voltage distribution equipment which is simple to install requiring only a short time, and which can flexibly accommodate various modifications.The busbar unit 23, which is a distribution component, is installed directly...
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JP3403934B2 |
To eliminate movement of a protection cover to control generation of noise and prevent generation of rust at the external surface of duct casing, by providing a protection cover at the periphery of flange connecting portion so that the i...
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JP2003111224A |
To reduce the overall depth of a gas-insulated switchgear which constitutes a power incoming circuit provided between cable heads and bus bars.A current transformer element container 21 is constituted of a cylindrical body part 21a whose...
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JP2003107110A |
To provide an electric field measuring sensor and its manufacturing method capable of heightening both arc resistant performance and mechanical strength, and improving electric field measurement accuracy and long-term stability with exce...
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JP2003103134A |
To provide a gaseous SF 6 sampling device and its method which exhibit an excellent environmentally friendly characteristic by sampling a slight amount of gaseous SF 6 intruding into gaseous nitrogen and the atmosphere and suppressing th...
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JP2003102112A |
To provide a method and device for replacement operation, in which no removing or re-attaching of a component installed in a casing is required, when replacing an O-ring of a gas-insulated switch gear, for improved work efficiency.When r...
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JP2003102123A |
To facilitate internal wiring and inspection.In a phase-separating connection box, where one end of each phase of connection boxes 15 is attached to a sheath tube for accommodating a bus 1 and another end is attached to a tank 3 of a tra...
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JP2003092812A |
To control increase in kinds of components even when allocation of branched conductors is changed.This gas-insulated switch gear has a structure that the rod type first conductor 19 is allocated within a metal vessel 15 sealed with insul...
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JP3388554B2 |
PURPOSE: To allow the bending work of bus bar without requiring any metal mold by pushing a bus bar, having same profile, as a bus bar insertion groove, downward thereby inserting the bus bar into the groove. CONSTITUTION: A pair of chuc...
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JP2003087915A |
To obtain a gas-insulated electric apparatus having a small and low cost transformer.This gas-insulated electric apparatus has a pressure container 21 filled with insulating and arc-suppressing gas, bus-bars 24 housed in the pressure con...
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JP2003087917A |
To provide a gas-insulated apparatus whose insulation performance is not deteriorated by the application of a lightning impulse even if a surface of an insulating spacer is charged after a switching impulse is applied or a DC voltage is ...
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JP3386956B2 |
To provide a bus connecting structure wherein easy connection is enabled without adjustment when positional deviation exists between switchboard units, and assembling workability in a site is improved. In this bus connecting structure 10...
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JP2003079013A |
To obtain a distribution board device capable of improving workability while reducing the number of part items and cutting down on the cost of the device.In the distribution board device wherein a busbar 32 for feeding power fed via a po...
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JP3385932B2 |
To reduce number of components, facilitate assembly work, and reduce cost. A bus-bar cover connector connects a cover 1 and a cover 2, in which bus-bars are installed. A loop side of a hook-and-loop tapes (registered trade mark) 21 are s...
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JP2003070112A |
To prevent residence of rainwater entered into the inside of a bolt hole.In a gas insulated electrical apparatus wherein, an insulation spacer 9 is sandwiched between flanges 8a that are provided at respective end portions of a pair of h...
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JP2003070114A |
To prevent entry of rainwater from gaps at a threaded portion between a bolt and a nut.In a gas insulated electrical apparatus wherein, an insulation spacer 9 is sandwiched between flanges 8a that are provided at respective end portions ...
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JP2003070111A |
To prevent entry of rainwater from gaps at a threaded portion between a bolt and a nut.In a gas insulated electric apparatus wherein, an insulation spacer 9 is sandwiched between flanges 8a that are provided at respective end portions of...
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JP2003070113A |
To prevent damage to an insulation spacer even if rainwater enters the inside of a bolt hole.In a gas insulated electrical apparatus wherein an insulation spacer 9 supports the electrical apparatus with insulation gas sealed in container...
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JP2003066091A |
To positively remove an effect of noise due salt damage of an insulator in a method for diagnosing insulation by detecting an electromagnetic wave generated by partial discharge.The electromagnetic wave leaking out from the electrical ap...
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JP2003066001A |
To provide a gas detector capable of accurately measuring gas concentration to be detected, even if reaction sensitivity of a plurality of gas sensors varies.This gas detector is provided with a plurality of several gas sensors 11-1n dis...
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JP3380990B2 |
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JP2003047131A |
To specify an insulator for an electrical busbar system having at least one rail. The insulator is specified for an electrical busbar system having at least one rail (5). Overall, it has the shape of an axisymmetrical body (1), with a ho...
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JP2003047141A |
To further improve earthquake resistance in such a pressure vessel of an gas-insulated bus bar apparatus, which has partly to be installed with a bridged structure at a high position from ground in a layout to cross an in-plant road or t...
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JP2003023710A |
To solve the problems, in the internal electrode type partial discharge detecting device of an internal antenna system, an insulating gas inside a metal container is forced to be discharged, when mounting and removing a partial discharge...
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JP2003023709A |
To provide a gas insulated switchgear capable of surely capture metal foreign particles that can be miniaturized, and that has high flexibility in selection of the gas to be used.High-voltage conductors 1, 2 for conduction are inserted i...
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JP2003023725A |
To provide a means for monitoring indication of deterioration of an insulating supporter used for high-voltage electrical and apparatuses, and an insulating supporter which reduces residual charges remaining in a system line, in a short ...
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JP3367052B2 |
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JP2003009317A |
To provide a solid insulator-covered conductor which can prevent coronas and readily uniformize the electric fields of the joints between bus-bars, by preventing cracks in the periphery of the solid insulator covered conductor.At an end ...
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JP3364324B2 |
PURPOSE: To insulate a solid insulated bus with high reliability by arranging an insulator provided with an external conductive layer composed of sliver-based conducting paint on its external surface around a conductor and installing a s...
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JP3356240B2 |
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JP3357691B2 |
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JP2002354641A |
To provide an insulation structure wherein air is the principal insulation while at the same time the equipment as a whole can be made compact by reducing the spacing of the spatial insulation without being affected by the shape of the l...
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JP2002354618A |
To enable the detection of an abnormality caused by a contact failure when cracked gas exceeds a threshold while dispensing with work for the determination of an increase trend of the cracked gas for which several weeks have hitherto bee...
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JP2002350394A |
To easily install a detecting device, which detects gas, to a gas filled instrument, and to make the detecting device compact. The detecting device is composed of an electrochemical element which includes a first and a second porous elec...
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JP2002345131A |
To provide a bus-bar connection device for a gas-insulated switchgear which can change the length of an epoxy bushing, according to a distance between a bus-bar connector and an apparatus placed in a gas.This bus-bar connection device fo...
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JP2002345130A |
To provide a power-feeding duct system, in which protruding lengths of both side surfaces of a wiring duct from a ceiling surface are suppressed, to reduce the thickness of the wiring duct for space savings and to simplify attachment of ...
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JP2002340969A |
To efficiently detect an electromagnetic wave accompanying partial discharge generated in a high voltage vessel in a flexible structure form the surface of an insulation spacer and to easily realize shielding of outside noise.A highly fl...
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JP3347740B2 |
The invention concerns a tap-off box for a power-distribution system, the tap-off box comprising a base element which can be mounted on a busbar channel of the power-distribution system and closed by a cover pivotably mounted on the base...
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JP3342495B2 |
PCT No. PCT/DE97/01782 Sec. 371 Date Dec. 21, 1999 Sec. 102(e) Date Dec. 21, 1999 PCT Filed Aug. 8, 1997 PCT Pub. No. WO98/08284 PCT Pub. Date Feb. 26, 1998A connecting unit containing a four-segment inner conductor connection in an encl...
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JP2002317696A |
To manufacture a control device at a low cost without complicating die casting even if a structure of a bus bar circuit to be embedded complicated.An intermediate molding 50 is formed having a bus bar accommodating groove 50a, and the bu...
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JP2002313456A |
To improve connection workability in disposing a bus duct in a vertical direction, and reduce laying space in laying a large number.Plate type connection cases 1 and 2 are provided in length directions on the right and the left at an end...
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JP2002315118A |
To provide a gas insulating apparatus where the insulation resistance is improved by covering a part of an insulating spacer with an insulating cover and suppressing the occurrence of creeping discharge in the insulating spacer.The gas i...
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JP2002271924A |
To solve the problem, where an instrument transformer and a partial discharge monitor device, using a capacitance-dividing voltage type sensor, are independently provided, which is one factor of the cost increase of a gas- insulated swit...
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JP2002271925A |
To obtain a gas-insulated switchgear which is small in size and light in weight and has an excellent strength.This current transformer 12 has a support unit 14 consisting of an aluminum plate and an annular Rogowski coil 13 which has a r...
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JP3325306B2 |
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JP2002262419A |
To provide an electric apparatus and an insulated switchgear, which do not generate a corona discharge and a disruptive discharge, even if an insulating medium having lower dielectric strength than SF6 gas is used for preventing global w...
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JP2002262418A |
To provide an inexpensive gas-insulated switchgear and an insulating spacer for the switchgear enhanced in efficiency of mounting work.The gas-insulated switchgear is provided with: cylindrical vessels 1, 2 provided with flange sections ...
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JP2002252910A |
To provide a structure of a terminating connection part in gas which is excellent in workability when a mounting flanges is mounted on a bottom plate of a cable connecting part, tightly and effectively seals pressurized insulating gas in...
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JP2002247739A |
To provide a device for preventing the formation of dew inside a bus duct between a transformer and a switchboard.A fan 6 is mounted inside an inspection opening cover 3 for inspecting the inside of the bus duct. A clearance is formed at...
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JP2002247740A |
To provide a bus connector at a low cost which is capable of attaining the reduction of the overall length and the number of parts, and easy and sure of connection.In a fixed conductor 101 which is stored in a pipeline 103 and connected ...
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