US20020015281A1 - Gas-insulated switchgear - Google Patents
Gas-insulated switchgear Download PDFInfo
- Publication number
- US20020015281A1 US20020015281A1 US09/867,704 US86770401A US2002015281A1 US 20020015281 A1 US20020015281 A1 US 20020015281A1 US 86770401 A US86770401 A US 86770401A US 2002015281 A1 US2002015281 A1 US 2002015281A1
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- US
- United States
- Prior art keywords
- bushings
- vessel
- gas
- common axis
- hermetic vessel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0358—Connections to in or out conductors
Definitions
- This invention relates to a gas-insulated switchgear and, more particularly, to a bushing for a gas-insulated switchgear for the connection to the insulated bus conductors of the electric power system for example.
- FIG. 5 illustrates a conventional gas-insulated switchgear disclosed in Japanese Patent Laid-Open No. 6-12948.
- this gas-insulated switchgear disposed within a hermetic vessel 2 filled with an electrically insulating gas are interrupters 5 and a vessel wall of the hermetic vessel 2 has mounted thereon bushings 8 for electrically connecting the interrupters 5 to insulated bus conductors 13 .
- the bushings 8 are disposed in parallel to each other and extend through the vessel wall of the hermetic vessel 2 and are connected to the interrupters 5 by means of elongated conductors 17 within the hermetic vessel 2 .
- FIG. 6 illustrates another conventional gas-insulated switchgear disclosed in Japanese Utility Model Laid-Open No. 5-23711.
- a hermetic vessel 2 in which an electrically insulating gas is filled has contained therein disconnectors 4 and interrupters 5 and three insulated bus conductors 13 are electrically connected to the interrupters 5 through bushings 8 mounted to the vessel wall of the hermetic vessel 2 .
- the bushings 8 have different configurations from each other and extend through the vessel wall of the hermetic vessel 2 to be connected to contacts 9 of the disconnectors 4 disposed in alignment on a common axis within the hermetic vessel 2 .
- the main object of the present invention is to provide a gas-insulated switchgear free from the above-discussed problems.
- Another object of the present invention is to provide a gas-insulated switchgear that is small-sized, the bushings for each phase are the same and that the mechanics strength of the hermetic vessel can be improved.
- the present invention resides in a gas-insulated switchgear comprising electric devices disposed in parallel to have a common axis for each phase for opening and closing electric circuits, a hermetic vessel containing the electric devices and filled with an electrically insulating gas and bushings mounted to and passing through a vessel wall of the hermetic vessel and each having an outer end connected to an insulated bus conductor at the outside of the hermetic vessel and an inner end connected to the electric device within the hermetic vessel.
- Each of the bushings has a central axis that is perpendicular to the common axis of the electric device and spaced apart from each other in the direction of extension of the common axis and shifted by a predetermined angle with respect to each other about the common axis.
- the vessel walls of the hermetic vessel to which the bushings are mounted may be flat and may have a portion that extends at an angle from an inside position to an outside position with respect to other portion of the vessel wall so that the central axis of the bushings define predetermined angles therebetween that correspond to the predetermined angle of the central axis of the bushings.
- the inner ends of the bushings mounted to the hermetic vessel may be positioned on said common axis.
- the inner ends of the bushings may have mounted thereon contacts of the disconnectors.
- FIG. 1 is a schematic side view of one embodiment of a gas-insulated switchgear of the present invention
- FIG. 2 is a schematic side view of the gas-insulated switchgear shown in FIG. 1;
- FIG. 3 is a top plan view of the hermetic vessel shown in FIG. 1;
- FIG. 4 is a side view of the hermetic vessel shown in FIG. 1;
- FIG. 5 is a schematic side view of a conventional gas-insulated switchgear in which the bushings are arranged in parallel;
- FIG. 6 is a schematic side view of another gas-insulated switchgear in which the bushings of different configuration are employed.
- FIGS. 1 and 2 illustrate a gas-insulated switchgear including a bushing of the present invention.
- the reference numeral 21 depicts a power distribution box of a gas-filled switchgear for three-phase ac circuit.
- two hermetic vessels 22 and 23 are mounted one on another, the upper hermetic vessel 22 having mounted therein interrupters (which will be referred to as a first disconnectors) 24 corresponding to the respective phases, a blade 24 b pivoted at a connection terminal 24 a at one end and a lever 27 made of an electrically insulating material for operating the blade 24 b .
- the hermetic vessel 22 has a substantially a triangular or a prism configuration as shown in FIGS.
- the bushings 20 can be used in common, eliminating the need for a separate electrical conductor from the tips of the bushings 20 to the disconnector contacts 29 , allowing the hermetic vessel 22 to be made small.
- the triangular configuration of the section of the hermetic vessel 22 to which the bushings 20 are attached has a bottom portion of the triangle that is lower than the top wall of the hermetic vessel 22 to allow the hermetic vessel 22 to be small-sized. Also, by bending the bottom portion of the triangle as just discussed, the stress that generates in the hermetic vessel 22 can be decreased.
- the hermetic vessel 22 filled with an electrically insulating gas contains electric devices which are disconnectors 24 for each phase for opening and closing electric circuits and disposed in parallel to have a common axis A.
- the vessel wall of the hermetic vessel 22 has mounted thereon the bushings 20 mounted to and passing through a vessel wall of the hermetic vessel 22 .
- the bushings 20 each has an outer end 30 connected to the insulated bus conductor 13 at the outside of the hermetic vessel 22 and an inner end 31 connected to the electric device or the disconnectors 24 within the hermetic vessel 22 .
- each of the bushings 20 has a central axis B that is perpendicular to the common axis A of the electric device and spaced apart from each other in the direction of extension of the common axis A and shifted by a predetermined angle with respect to each other about the common axis A.
- the vessel walls 33 , 34 , 35 of the hermetic vessel 22 to which the bushings 20 are mounted are flat and have some of portion 33 , 35 that inclines and extends from an inside position to an outside position with respect to other portion of the vessel wall, as apparent from FIGS. 3 and 4, so that the central axis B of the bushings 20 define predetermined angles therebetween that correspond to the predetermined angle of the central axis B of the bushings 20 .
- the mounting vessel walls 33 and 35 which are portions of the mounting vessel walls 33 , 34 and 35 have substantially rectangular shape in plan and the connection portion 37 at which two neighboring portions are connected and raised to provide slopes at both sides of the connection portion to define a ridge, thereby to generally defining a triangular or gabled roof shape.
- the lower portions 38 at the opposite sides of the gabled roof are made lower than the top wall 39 of the vessel wall to be inside of the outer contour of the hermetic vessel 22 , so that the gabled roof portion projecting from the contour of the hermetic vessel 22 becomes undesirably large.
- the mounting walls 33 and 35 inclined as above discussed extend from the inner position relative to other portion of the hermetic vessel wall to the outer position, so that the central axis B of the bushings 20 when the bushings 20 are mounted to the mounting walls are arranged to have a predetermined angles between them.
- the central mounting wall portion 34 of the three mounting wall poritons 33 , 34 adn 35 is the substantially square flat portion disposed in parallel to and bellow the vessel wall surface 39 of the hermetic vessel 22 .
- the central mounting wall portion 24 is also provided with a circular opening 36 for mounting the bushing 20 therein.
- each of the mounting wall portions 33 , 34 and 35 are different in the orientation of the inclination, so that, when the bushings 20 are mounted to the mounting wall portion, the directions of axis B of the bushings 20 have respectively different orientations and, as apparent from FIG. 2, the central axis B of the bushings 20 are spaced apart from each other in the direction of the common axis A of the disconnectors 24 , and are perpendicular to the common axis A and further as apparent from FIG. 1, they are shifted by a predetermined angle about the common axis A. Also, the inner ends 31 of the bushings 20 are aligned on the common axis A and the contacts 29 of the disconnectors 29 are provided on the inner ends 31 and on the common axis A.
- the gas-insulated switchgear also comprises a disconnector operating mechanism 41 for operating the disconnector 24 , a switches 42 disposed within the second hermetic vessel 23 , an operating mechanism 43 for the switches 42 , a three-position switches 44 and a cables 45 extending from the three-position switches 44 .
- the arrangement being such that the vessel wall of the hermetic vessel at which the bushings for each phase are mounted is configured so that the bushings are directed in different directions and the tips of the bushings are positioned on the common axis when the bushings of the same configuration are used and that the contacts are provided at the tips on the common axis, whereby the switchgear can be small-sized the same bushings can be used in common to all phases.
- the vessel wall of the hermetic vessel at which the bushings for each phase are mounted is configured so that the bushings are directed in different directions and the end portions of the mounting vessel wall are bent inwardly to become lower than the top wall of the hermetic vessel, whereby the mechanical strength of the hermetic vessel is improved and the switchgear can be further small-sized.
- the gas-insulated switchgear of the present inventin comprises electric devices disposed in parallel to have a common axis for each phase for opening and closing electric circuits, a hermetic vessel containing the electric devices and filled with an electrically insulating gas and bushings mounted to and passing through a vessel wall of the hermetic vessel and each having an outer end connected to an insulated bus conductor at the outside of the hermetic vessel and an inner end connected to the electric device within the hermetic vessel.
- Each of the bushings has a central axis that is perpendicular to the common axis of the electric device and spaced apart from each other in the direction of extension of the common axis and shifted by a predetermined angle with respect to each other about the common axis. Therefore, the large space for accommodating the elongated electric conductors extending from the tip of the bushing can be eliminated to make the hermetic vessel small and the bushings of the same configurations cant be used to position the inner tips of the bushings in alignment with the common axis, thus enabling the gas-insulated switchgear to be large-sized, installation area to be large and the manufacturing cost to be low.
- the vessel walls of the hermetic vessel to which the bushings are mounted may be flat and may have a portion that extends at an angle from an inside position to an outside position with respect to other portion of the vessel wall so that the central axis of the bushings define predetermined angles therebetween that correspond to the predetermined angle of the central axis of the bushings, so that the bushings of the same configurations cant be used, enabling the gas-insulated switchgear to be made less expensive.
- the inner ends of the bushings mounted to the hermetic vessel may be positioned on said common axis, so that the bushings of the same configurations cant be used, enabling the gas-insulated switchgear to be large-sized, installation area to be large and the manufacturing cost to be low.
- the inner ends of the bushings may have mounted thereon contacts of the disconnectors, so that the bushings of the same configurations cant be used to position the inner tips of the bushings in alignment with the common axis, thus enabling the gas-insulated switchgear to be large-sized, installation area to be large and the manufacturing cost to be low.
Abstract
A gas-insulated switchgear comprising bushings mounted to and passing through a vessel wall of the hermetic vessel, each having an outer end connected to an insulated bus conductor at the outside of the hermetic vessel and an inner end connected to the electric device within the hermetic vessel. Each of the bushings has a central axis that is perpendicular to the common axis of the electric device and spaced apart from each other in the direction of extension of the common axis and shifted by a predetermined angle with respect to each other about the common axis. The flat bushing mounting vessel walls are tilted from inside to outside relative to other portion of the wall.
Description
- This application is based on Application No. 2000-166143, filed in Japan on Jun. 2, 2000, the contents of which are hereby incorporated by reference.
- This invention relates to a gas-insulated switchgear and, more particularly, to a bushing for a gas-insulated switchgear for the connection to the insulated bus conductors of the electric power system for example.
- FIG. 5 illustrates a conventional gas-insulated switchgear disclosed in Japanese Patent Laid-Open No. 6-12948. In this gas-insulated switchgear, disposed within a
hermetic vessel 2 filled with an electrically insulating gas areinterrupters 5 and a vessel wall of thehermetic vessel 2 has mounted thereonbushings 8 for electrically connecting theinterrupters 5 to insulatedbus conductors 13. Thebushings 8 are disposed in parallel to each other and extend through the vessel wall of thehermetic vessel 2 and are connected to theinterrupters 5 by means ofelongated conductors 17 within thehermetic vessel 2. - FIG. 6 illustrates another conventional gas-insulated switchgear disclosed in Japanese Utility Model Laid-Open No. 5-23711. In this gas-insulated switchgear, a
hermetic vessel 2 in which an electrically insulating gas is filled has contained thereindisconnectors 4 andinterrupters 5 and three insulatedbus conductors 13 are electrically connected to theinterrupters 5 throughbushings 8 mounted to the vessel wall of thehermetic vessel 2. Thebushings 8 have different configurations from each other and extend through the vessel wall of thehermetic vessel 2 to be connected to contacts 9 of thedisconnectors 4 disposed in alignment on a common axis within thehermetic vessel 2. - According to the above-described conventional gas-insulated switchgear, for the gas-insulated switchgear shown in FIG. 5, a large space is needed for accommodating the elongated
electric conductors 17 extending from the tip of thebushing 8, resulting in a largehermetic vessel 2. Also, for the gas-insulated switchgear shown in FIG. 6, different bushings of different configurations must be used to position the tips of thebushings 8 in alignment with the common axis, thus posing disadvantages that the gas-insulated switchgear is large-sized, installation area is large and that the product price is high. - Accordingly, the main object of the present invention is to provide a gas-insulated switchgear free from the above-discussed problems.
- Another object of the present invention is to provide a gas-insulated switchgear that is small-sized, the bushings for each phase are the same and that the mechanics strength of the hermetic vessel can be improved.
- With the above objects in view, the present invention resides in a gas-insulated switchgear comprising electric devices disposed in parallel to have a common axis for each phase for opening and closing electric circuits, a hermetic vessel containing the electric devices and filled with an electrically insulating gas and bushings mounted to and passing through a vessel wall of the hermetic vessel and each having an outer end connected to an insulated bus conductor at the outside of the hermetic vessel and an inner end connected to the electric device within the hermetic vessel. Each of the bushings has a central axis that is perpendicular to the common axis of the electric device and spaced apart from each other in the direction of extension of the common axis and shifted by a predetermined angle with respect to each other about the common axis.
- The vessel walls of the hermetic vessel to which the bushings are mounted may be flat and may have a portion that extends at an angle from an inside position to an outside position with respect to other portion of the vessel wall so that the central axis of the bushings define predetermined angles therebetween that correspond to the predetermined angle of the central axis of the bushings.
- The inner ends of the bushings mounted to the hermetic vessel may be positioned on said common axis.
- The inner ends of the bushings may have mounted thereon contacts of the disconnectors.
- The present invention will become more readily apparent from the following detailed description of the preferred embodiments of the present invention taken in conjunction with the accompanying drawings, in which:
- FIG. 1 is a schematic side view of one embodiment of a gas-insulated switchgear of the present invention;
- FIG. 2 is a schematic side view of the gas-insulated switchgear shown in FIG. 1;
- FIG. 3 is a top plan view of the hermetic vessel shown in FIG. 1;
- FIG. 4 is a side view of the hermetic vessel shown in FIG. 1;
- FIG. 5 is a schematic side view of a conventional gas-insulated switchgear in which the bushings are arranged in parallel; and
- FIG. 6 is a schematic side view of another gas-insulated switchgear in which the bushings of different configuration are employed.
- FIGS. 1 and 2 illustrate a gas-insulated switchgear including a bushing of the present invention. The
reference numeral 21 depicts a power distribution box of a gas-filled switchgear for three-phase ac circuit. Within thedistribution box 21, twohermetic vessels hermetic vessel 22 having mounted therein interrupters (which will be referred to as a first disconnectors) 24 corresponding to the respective phases, ablade 24 b pivoted at aconnection terminal 24 a at one end and alever 27 made of an electrically insulating material for operating theblade 24 b. Thehermetic vessel 22 has a substantially a triangular or a prism configuration as shown in FIGS. 3 and 4 at the section to which the bushings are mounted so that thebushings 20 of the same configuration have tips located on the same axis A that passes through thecontacts 29 of thedisconnectors 24 when thebushings 20 are mounted to the triangular wall section of thehermetic vessel 22. The tips of theinsulated bushings 20 mounted to thehermetic vessel 22 to extend through the vessel wall are provided withdisconnector contacts 29. Accordingly, thebushings 20 can be used in common, eliminating the need for a separate electrical conductor from the tips of thebushings 20 to thedisconnector contacts 29, allowing thehermetic vessel 22 to be made small. - As seen from FIGS. 3 and 4, the triangular configuration of the section of the
hermetic vessel 22 to which thebushings 20 are attached has a bottom portion of the triangle that is lower than the top wall of thehermetic vessel 22 to allow thehermetic vessel 22 to be small-sized. Also, by bending the bottom portion of the triangle as just discussed, the stress that generates in thehermetic vessel 22 can be decreased. - In other words, in the gas-insulated switchgear of the present invention, as shown in FIGS. 1 and 2, the
hermetic vessel 22 filled with an electrically insulating gas contains electric devices which aredisconnectors 24 for each phase for opening and closing electric circuits and disposed in parallel to have a common axis A. The vessel wall of thehermetic vessel 22 has mounted thereon thebushings 20 mounted to and passing through a vessel wall of thehermetic vessel 22. Thebushings 20 each has anouter end 30 connected to the insulatedbus conductor 13 at the outside of thehermetic vessel 22 and aninner end 31 connected to the electric device or thedisconnectors 24 within thehermetic vessel 22. - According to the present invention, each of the
bushings 20 has a central axis B that is perpendicular to the common axis A of the electric device and spaced apart from each other in the direction of extension of the common axis A and shifted by a predetermined angle with respect to each other about the common axis A. - In order to mount the
bushings 20 in such the arrangement to thehermetic vessel 22, thevessel walls hermetic vessel 22 to which thebushings 20 are mounted are flat and have some ofportion bushings 20 define predetermined angles therebetween that correspond to the predetermined angle of the central axis B of thebushings 20. - As seen from FIG. 4, the
mounting vessel walls mounting vessel walls connection portion 37 at which two neighboring portions are connected and raised to provide slopes at both sides of the connection portion to define a ridge, thereby to generally defining a triangular or gabled roof shape. Thelower portions 38 at the opposite sides of the gabled roof are made lower than thetop wall 39 of the vessel wall to be inside of the outer contour of thehermetic vessel 22, so that the gabled roof portion projecting from the contour of thehermetic vessel 22 becomes undesirably large. Thus, themounting walls bushings 20 when thebushings 20 are mounted to the mounting walls are arranged to have a predetermined angles between them. - The central
mounting wall portion 34 of the threemounting wall poritons adn 35 is the substantially square flat portion disposed in parallel to and bellow thevessel wall surface 39 of thehermetic vessel 22. The centralmounting wall portion 24 is also provided with acircular opening 36 for mounting thebushing 20 therein. - Thus, each of the
mounting wall portions bushings 20 are mounted to the mounting wall portion, the directions of axis B of thebushings 20 have respectively different orientations and, as apparent from FIG. 2, the central axis B of thebushings 20 are spaced apart from each other in the direction of the common axis A of thedisconnectors 24, and are perpendicular to the common axis A and further as apparent from FIG. 1, they are shifted by a predetermined angle about the common axis A. Also, theinner ends 31 of thebushings 20 are aligned on the common axis A and thecontacts 29 of thedisconnectors 29 are provided on theinner ends 31 and on the common axis A. - The gas-insulated switchgear also comprises a
disconnector operating mechanism 41 for operating thedisconnector 24, aswitches 42 disposed within the secondhermetic vessel 23, anoperating mechanism 43 for theswitches 42, a three-position switches 44 and acables 45 extending from the three-position switches 44. - Thus, according to the present invention, the arrangement being such that the vessel wall of the hermetic vessel at which the bushings for each phase are mounted is configured so that the bushings are directed in different directions and the tips of the bushings are positioned on the common axis when the bushings of the same configuration are used and that the contacts are provided at the tips on the common axis, whereby the switchgear can be small-sized the same bushings can be used in common to all phases. Also, since the vessel wall of the hermetic vessel at which the bushings for each phase are mounted is configured so that the bushings are directed in different directions and the end portions of the mounting vessel wall are bent inwardly to become lower than the top wall of the hermetic vessel, whereby the mechanical strength of the hermetic vessel is improved and the switchgear can be further small-sized.
- As has been described, the gas-insulated switchgear of the present inventin comprises electric devices disposed in parallel to have a common axis for each phase for opening and closing electric circuits, a hermetic vessel containing the electric devices and filled with an electrically insulating gas and bushings mounted to and passing through a vessel wall of the hermetic vessel and each having an outer end connected to an insulated bus conductor at the outside of the hermetic vessel and an inner end connected to the electric device within the hermetic vessel. Each of the bushings has a central axis that is perpendicular to the common axis of the electric device and spaced apart from each other in the direction of extension of the common axis and shifted by a predetermined angle with respect to each other about the common axis. Therefore, the large space for accommodating the elongated electric conductors extending from the tip of the bushing can be eliminated to make the hermetic vessel small and the bushings of the same configurations cant be used to position the inner tips of the bushings in alignment with the common axis, thus enabling the gas-insulated switchgear to be large-sized, installation area to be large and the manufacturing cost to be low.
- The vessel walls of the hermetic vessel to which the bushings are mounted may be flat and may have a portion that extends at an angle from an inside position to an outside position with respect to other portion of the vessel wall so that the central axis of the bushings define predetermined angles therebetween that correspond to the predetermined angle of the central axis of the bushings, so that the bushings of the same configurations cant be used, enabling the gas-insulated switchgear to be made less expensive.
- The inner ends of the bushings mounted to the hermetic vessel may be positioned on said common axis, so that the bushings of the same configurations cant be used, enabling the gas-insulated switchgear to be large-sized, installation area to be large and the manufacturing cost to be low.
- The inner ends of the bushings may have mounted thereon contacts of the disconnectors, so that the bushings of the same configurations cant be used to position the inner tips of the bushings in alignment with the common axis, thus enabling the gas-insulated switchgear to be large-sized, installation area to be large and the manufacturing cost to be low.
Claims (4)
1. A gas-insulated switchgear comprising:
electric devices disposed in parallel to have a common axis for each phase for opening and closing electric circuits;
a hermetic vessels containing said electric devices and filled with an electrically insulating gas;
bushings mounted to and passing through a vessel wall of said hermetic vessel, said bushings each having an outer end connected to an insulated bus conductor at the outside of said hermetic vessel and an inner end connected to sad electric device within said hermetic vessel,
characterized in that each of said bushings has a central axis that is perpendicular to said common axis of said electric device and spaced apart from each other in the direction of extension of said common axis and shifted by a predetermined angle with respect to each other about said common axis.
2. The gas-insulated switchgear as claimed in claim 1 wherein said vessel walls of said hermetic vessel to which said bushings are mounted are flat and have a portion that angularly extends from an inside position to an outside position with respect to other portion of said vessel wall so that said central axis of said bushings define predetermined angles therebetween that correspond to said predetermined angle of said central axis of said bushings.
3. The gas-insulated switchgear as claimed in claim 1 wherein said inner ends of said bushings mounted to said hermetic vessel are positioned on said common axis.
4. The gas-insulated switchgear as claimed in claim 1 wherein said inner ends of said bushings has mounted thereon contacts of disconnectors.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000166143A JP2001352624A (en) | 2000-06-02 | 2000-06-02 | Bushing of gas-insulated switchgear |
JP2000-166143 | 2000-06-02 |
Publications (2)
Publication Number | Publication Date |
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US20020015281A1 true US20020015281A1 (en) | 2002-02-07 |
US6459567B2 US6459567B2 (en) | 2002-10-01 |
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Application Number | Title | Priority Date | Filing Date |
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US09/867,704 Expired - Lifetime US6459567B2 (en) | 2000-06-02 | 2001-05-31 | Gas-insulated switchgear |
Country Status (8)
Country | Link |
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US (1) | US6459567B2 (en) |
EP (1) | EP1160946B1 (en) |
JP (1) | JP2001352624A (en) |
KR (1) | KR100393262B1 (en) |
CN (1) | CN1327286A (en) |
DE (1) | DE60126184T2 (en) |
HK (1) | HK1041114A1 (en) |
TW (1) | TWI237432B (en) |
Cited By (1)
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---|---|---|---|---|
US20040190759A1 (en) * | 2003-03-25 | 2004-09-30 | Caldwell Lloyd M. | Positive patient identification |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4334852B2 (en) * | 2002-10-31 | 2009-09-30 | 三菱電機株式会社 | Gas insulated switchgear |
TWI228339B (en) * | 2002-11-06 | 2005-02-21 | Mitsubishi Electric Corp | Metal-enclosed switchgear |
CN101061171B (en) * | 2004-08-18 | 2010-06-16 | 巴赛尔聚烯烃意大利有限公司 | Stretch blow-molded containers from metallocene propylene polymer compositions |
JP4744323B2 (en) * | 2006-02-28 | 2011-08-10 | 三菱電機株式会社 | Switchgear |
DE202006020757U1 (en) * | 2006-05-29 | 2009-12-31 | Siemens Aktiengesellschaft | Gas-insulated switch panel of a medium-voltage switchgear |
WO2012080522A1 (en) | 2010-12-14 | 2012-06-21 | Ormazabal Y Cia, S.L.U. | Connection device between high-voltage electrical apparatuses |
US9355792B2 (en) * | 2013-02-13 | 2016-05-31 | Mitsubishi Electric Corporation | Gas insulated switchgear |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2242794B1 (en) * | 1973-08-30 | 1976-11-19 | Merlin Gerin | |
US4370512A (en) * | 1981-02-23 | 1983-01-25 | Westinghouse Electric Corp. | Shielding device for electrical inductive structure |
US4445162A (en) * | 1981-09-02 | 1984-04-24 | Siemens-Allis, Inc. | Compact chassis plate for switchgear enclosure |
FR2558013B1 (en) * | 1984-01-11 | 1986-04-11 | Merlin Gerin | CONNECTION CABINET BYPASSING A MEDIUM VOLTAGE ELECTRICAL STATION |
JP2586246B2 (en) | 1991-07-22 | 1997-02-26 | 住友金属工業株式会社 | Manufacturing method of hot seamless steel pipe |
DE4412784C2 (en) | 1994-04-18 | 1997-04-03 | Abb Patent Gmbh | Current and voltage sensor for a high-voltage control panel |
FR2740621B1 (en) | 1995-10-26 | 1997-11-21 | Gec Alsthom T & D Sa | SHIELDED MEDIUM VOLTAGE STATION |
JPH09308032A (en) | 1996-05-16 | 1997-11-28 | Nissin Electric Co Ltd | Gas-insulated switchgear |
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2000
- 2000-06-02 JP JP2000166143A patent/JP2001352624A/en active Pending
-
2001
- 2001-05-30 KR KR10-2001-0030086A patent/KR100393262B1/en not_active IP Right Cessation
- 2001-05-31 CN CN01121897A patent/CN1327286A/en active Pending
- 2001-05-31 US US09/867,704 patent/US6459567B2/en not_active Expired - Lifetime
- 2001-06-01 TW TW090113315A patent/TWI237432B/en not_active IP Right Cessation
- 2001-06-01 EP EP01112890A patent/EP1160946B1/en not_active Expired - Lifetime
- 2001-06-01 DE DE60126184T patent/DE60126184T2/en not_active Expired - Lifetime
-
2002
- 2002-03-12 HK HK02101879.2A patent/HK1041114A1/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040190759A1 (en) * | 2003-03-25 | 2004-09-30 | Caldwell Lloyd M. | Positive patient identification |
Also Published As
Publication number | Publication date |
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EP1160946A1 (en) | 2001-12-05 |
JP2001352624A (en) | 2001-12-21 |
TWI237432B (en) | 2005-08-01 |
KR100393262B1 (en) | 2003-07-31 |
DE60126184D1 (en) | 2007-03-15 |
US6459567B2 (en) | 2002-10-01 |
CN1327286A (en) | 2001-12-19 |
KR20010110134A (en) | 2001-12-12 |
EP1160946B1 (en) | 2007-01-24 |
HK1041114A1 (en) | 2002-06-28 |
DE60126184T2 (en) | 2007-10-18 |
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