EP0049642A1 - Gas insulated electrical apparatus - Google Patents
Gas insulated electrical apparatus Download PDFInfo
- Publication number
- EP0049642A1 EP0049642A1 EP19810304666 EP81304666A EP0049642A1 EP 0049642 A1 EP0049642 A1 EP 0049642A1 EP 19810304666 EP19810304666 EP 19810304666 EP 81304666 A EP81304666 A EP 81304666A EP 0049642 A1 EP0049642 A1 EP 0049642A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transformer
- switchgear
- electrical apparatus
- insulated electrical
- gas insulated
- 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
Links
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
Definitions
- This invention relates to a gas insulated electrical apparatus.
- a gas insulated electrical apparatus having a power transformer and switchgear, the latter comprising a circuit breaker, a disconnecting switch, an instrument current transformer, an instrument voltage transformer, a ground switch and the like disposed in separate housings, and with the two devices connected externally via bushings.
- a gas insulated electrical apparatus which comprises a transformer and switchgear for connection between said transformer and electrically conductive supply lines, wherein the transformer and the switchgear are contained within a common sealed housing filled with an electrically insulating gas.
- An advantage of the invention is that it leads to a more compact and less expensive constraction.
- transformer coils 1 are wound on a magnetic core 2.
- a sealed housing 3 contains the transformer coils 1, and is filled with an insulating gas such as SF 6 gas.
- Switchgear ' 4 is connected between the transformer coil 1 and a power cable 5.
- the switchgear 4 comprises a circuit breaker 401 and a disconnecting switch 402 which function to connect or disconnect the transformer coil 1 and the power cable 5, an instrument current transformer 403 which detects the current flowing through the transformer coil 1, an instrument voltage transformer 404 which detects the voltage applied to the transformer coil 1, and a ground switch 405 which earths the transformer coil 1.
- a second sealed housing 6 contains the switchgear 4, and is filled with an insulating gas such as SF 6 gas.
- a bushing 7 is mounted on the second sealed housing 6 so as to pass through a wall thereof, and functions to connect an end 501 of the power cable 5 to the switchgear 4.
- a cable box 8 constructed of a metal material such as sheet iron, is mounted on the second sealed housing 6.
- the cable tox 8 functions to protect the cable end 501 from dust etc., and also to prevent live parts such as the cable end 501 from being physically exposed, thereby to prevent electric shock accidents.
- a bushing 9 is mounted on the second sealed housing 6 so as to pass through a wall thereof, while a primary bushing 10 is mounted on the first sealed housing 3 so as to pass through a wall thereof.
- a conductor 11 is connected between the bushing 9 and the primary bushing 10, and functions to connect the switchgear 4 to the transformer coils 1.
- a conduit or duct 12 constructed of a metal material such as sheet iron, contains the conductor 11 therein.
- the duct 12 has its two end parts mounted on the first and second sealed vessels 3 and 6, to protect the conductor 11 etc. from dust etc. and also to prevent live parts such as the conductor 11 from being physically exposed, thereby to prevent electric shock accidents.
- a secondary bushing 13 is mounted on the first sealed housing 3 so as to pass through a wall thereof, and functions to pass electric power transformed by the transformer coils 1.
- Electric power supplied by the power cable 5 is applied to the transformer coils 1 through the switchgear 4, and is transformed by these transformer coils 1. Thereafter, the transformed power is passed via the secondary bushings 13.
- the conventional gas insulated electrical apparatus thus constructed requires there to be the duct 12 which contains the conductor 11, that is to say the connection 2 between the transformer coil 1 and the switchgear 4, and the primary bushing 10 and the bushing 9 which are respectively mounted on the first and second sealed housings 3 and 6 so as to pass through the walls thereof.
- This invention has been made in order to eliminate the disadvantages of the prior art as stated above, and provides a gas insulated electrical apparatus in which the switchgear 4 and the transformer coils 1 are contained in a single sealed housing, whereby the apparatus is rendered small in size as compared with the prior art apparatus.
- FIG 3 is a side view showing an embodiment of a gas insulated electrical apparatus according to this invention.
- a sealed housing 3a contains both the transformer coils 1 and the switchgear 4, and is filled with an insulating gas such as SF 6 gas.
- the transformer coils 1 and the switchgear 4 are contained in the single sealed housing 3a, and the transformer coil 1 and the switchgear 4 are connected directly by means of the conductor 11. Accordingly, the duct 12 and the primary bushing 10 as well as the bushing 9 in the conventional apparatus shown in Figure 1 are not required, and the apparatus can be made relatively small in size.
- FIG 4 is a side view showing another embodiment of the gas insulated electrical apparatus according to this invention.
- a partition wall 14 is mounted inside the sealed housing 3a and divides the interior of this sealed housing into a first chamber 3al on the side of the transformer coils 1 and a second chamber 3a2 on the side of the switchgear 4.
- a bushing 15 is mounted on the partition wall 14, and functions to connect the switchgear 4 to the transformer coil 1.
- the division of the sealed housing 3a into a first and second chambers 3al and 3a2 by the partition wall 14 makes it possible to inspect the transformer coils 1 and the switchgear 4 separately.
- the inspection of the switchgear 4 can be further facilitated by filling only the first chamber 3al with an insulating gas such as SF 6 gas and insulating the second chamber , 3a2 with atmospheric air.
- the transformer coils and the switchgear are contained in a single sealed housing, so the apparatus can be made relatively small in size and the bus ducts in the conventional apparatus can be dispensed with, thereby reducing the overall cost of the apparatus.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
Description
- This invention relates to a gas insulated electrical apparatus.
- A gas insulated electrical apparatus is known having a power transformer and switchgear, the latter comprising a circuit breaker, a disconnecting switch, an instrument current transformer, an instrument voltage transformer, a ground switch and the like disposed in separate housings, and with the two devices connected externally via bushings.
- According to the present invention, there is provided a gas insulated electrical apparatus which comprises a transformer and switchgear for connection between said transformer and electrically conductive supply lines, wherein the transformer and the switchgear are contained within a common sealed housing filled with an electrically insulating gas.
- An advantage of the invention is that it leads to a more compact and less expensive constraction.
- Further objects and features of the present invention will now be described, reference being made to the attached drawings in which:
- Figure 1 is a side view showing a prior-art gas insulated electrical apparatus;
- Figure 2 is a schematic circuit diagram of the electrical apparatus shown in Figure 1;
- Figure 3 is a side view showing an embodiment of a gas insulated electrical apparatus according to this invention; and
- Figure 4 is a side view showing another embodiment of the gas insulated electrical apparatus according to this invention.
- Referring to Figures 1 and 2, transformer coils 1 are wound on a
magnetic core 2. A sealed housing 3 contains thetransformer coils 1, and is filled with an insulating gas such as SF6 gas. Switchgear ' 4 is connected between thetransformer coil 1 and a power cable 5. Theswitchgear 4 comprises acircuit breaker 401 and a disconnectingswitch 402 which function to connect or disconnect thetransformer coil 1 and the power cable 5, an instrumentcurrent transformer 403 which detects the current flowing through thetransformer coil 1, an instrument voltage transformer 404 which detects the voltage applied to thetransformer coil 1, and aground switch 405 which earths thetransformer coil 1. A second sealed housing 6 contains theswitchgear 4, and is filled with an insulating gas such as SF6 gas. Abushing 7 is mounted on the second sealed housing 6 so as to pass through a wall thereof, and functions to connect anend 501 of the power cable 5 to theswitchgear 4. Acable box 8 constructed of a metal material such as sheet iron, is mounted on the second sealed housing 6. - The cable tox 8 functions to protect the
cable end 501 from dust etc., and also to prevent live parts such as thecable end 501 from being physically exposed, thereby to prevent electric shock accidents. - A
bushing 9 is mounted on the second sealed housing 6 so as to pass through a wall thereof, while aprimary bushing 10 is mounted on the first sealed housing 3 so as to pass through a wall thereof. Aconductor 11 is connected between thebushing 9 and theprimary bushing 10, and functions to connect theswitchgear 4 to thetransformer coils 1. A conduit orduct 12 constructed of a metal material such as sheet iron, contains theconductor 11 therein. In addition, theduct 12 has its two end parts mounted on the first and second sealed vessels 3 and 6, to protect theconductor 11 etc. from dust etc. and also to prevent live parts such as theconductor 11 from being physically exposed, thereby to prevent electric shock accidents. Asecondary bushing 13 is mounted on the first sealed housing 3 so as to pass through a wall thereof, and functions to pass electric power transformed by thetransformer coils 1. - Electric power supplied by the power cable 5 is applied to the
transformer coils 1 through theswitchgear 4, and is transformed by thesetransformer coils 1. Thereafter, the transformed power is passed via thesecondary bushings 13. - The conventional gas insulated electrical apparatus thus constructed requires there to be the
duct 12 which contains theconductor 11, that is to say theconnection 2 between thetransformer coil 1 and theswitchgear 4, and theprimary bushing 10 and thebushing 9 which are respectively mounted on the first and second sealed housings 3 and 6 so as to pass through the walls thereof. This has led to the disadvantage that the overall dimensions of the apparatus become large. - This invention has been made in order to eliminate the disadvantages of the prior art as stated above, and provides a gas insulated electrical apparatus in which the
switchgear 4 and thetransformer coils 1 are contained in a single sealed housing, whereby the apparatus is rendered small in size as compared with the prior art apparatus. - Figure 3 is a side view showing an embodiment of a gas insulated electrical apparatus according to this invention. In the figure, portions corresponding to those in Figure 1 are respectively assigned the same reference numerals. This applies also to Figure 4. Referring to Figure 3, a sealed
housing 3a contains both thetransformer coils 1 and theswitchgear 4, and is filled with an insulating gas such as SF6 gas. - More specifically, the
transformer coils 1 and theswitchgear 4 are contained in the single sealedhousing 3a, and thetransformer coil 1 and theswitchgear 4 are connected directly by means of theconductor 11. Accordingly, theduct 12 and theprimary bushing 10 as well as thebushing 9 in the conventional apparatus shown in Figure 1 are not required, and the apparatus can be made relatively small in size. - Figure 4 is a side view showing another embodiment of the gas insulated electrical apparatus according to this invention. Referring to Figure 4, a
partition wall 14 is mounted inside the sealedhousing 3a and divides the interior of this sealed housing into a first chamber 3al on the side of thetransformer coils 1 and a second chamber 3a2 on the side of theswitchgear 4. Abushing 15 is mounted on thepartition wall 14, and functions to connect theswitchgear 4 to thetransformer coil 1. - More specifically, the division of the sealed
housing 3a into a first and second chambers 3al and 3a2 by thepartition wall 14 makes it possible to inspect thetransformer coils 1 and theswitchgear 4 separately. Moreover, the inspection of theswitchgear 4 can be further facilitated by filling only the first chamber 3al with an insulating gas such as SF6 gas and insulating the second chamber , 3a2 with atmospheric air. - As set forth above, according to this invention, the transformer coils and the switchgear are contained in a single sealed housing, so the apparatus can be made relatively small in size and the bus ducts in the conventional apparatus can be dispensed with, thereby reducing the overall cost of the apparatus.
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP140744/80 | 1980-10-07 | ||
JP55140744A JPS5765207A (en) | 1980-10-07 | 1980-10-07 | Gas insulated substation |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0049642A1 true EP0049642A1 (en) | 1982-04-14 |
EP0049642B1 EP0049642B1 (en) | 1985-05-02 |
Family
ID=15275705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19810304666 Expired EP0049642B1 (en) | 1980-10-07 | 1981-10-07 | Gas insulated electrical apparatus |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0049642B1 (en) |
JP (1) | JPS5765207A (en) |
DE (1) | DE3170311D1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2251130A (en) * | 1990-11-13 | 1992-06-24 | Southwest Electric Co | Transformer and motor control system |
US5216356A (en) * | 1990-11-13 | 1993-06-01 | Southwest Electric Company | Shielded three phase transformer with tertiary winding |
EP0598130A1 (en) * | 1991-08-23 | 1994-05-25 | Mitsubishi Denki Kabushiki Kaisha | Distribution apparatus |
US5449991A (en) * | 1993-09-20 | 1995-09-12 | Southwest Electric Company | Motor control system and apparatus for providing desired three-phase voltage therein using a main transformer energized through an autotransformer |
EP1113549A1 (en) * | 1999-12-30 | 2001-07-04 | ABB T&D Technologies Ltd. | Electric substation |
EP1113547A1 (en) * | 1999-12-30 | 2001-07-04 | ABB T&D Technologies Ltd. | Electric substation |
EP1113548A1 (en) * | 1999-12-30 | 2001-07-04 | ABB T&D Technologies Ltd. | Electric substation |
EP1113546A1 (en) * | 1999-12-30 | 2001-07-04 | ABB T&D Technologies Ltd. | Electric substation |
DE102007057017A1 (en) * | 2007-11-23 | 2009-05-28 | Siemens Ag | Arrangement with a switching device and a transformer |
WO2010133766A1 (en) * | 2009-05-20 | 2010-11-25 | Sakari Peltoniemi | Electricity distribution structure |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2246318A (en) * | 1939-08-11 | 1941-06-17 | Westinghouse Electric & Mfg Co | Power transformer |
FR1097411A (en) * | 1954-03-26 | 1955-07-05 | Electr De Pierrefitte Atel | Mobile armored transformer station |
GB947125A (en) * | 1961-05-19 | 1964-01-22 | Acec | A transformer box |
FR1428544A (en) * | 1964-12-31 | 1966-02-18 | Entpr Generale D Installations | New transformer station |
US3259808A (en) * | 1963-10-14 | 1966-07-05 | Mc Graw Edison Co | Ground level distribution transformer |
GB1036101A (en) * | 1961-04-20 | 1966-07-13 | Brush Electrical Eng | A flameproof transformer incorporating switchgear |
US3273053A (en) * | 1963-03-29 | 1966-09-13 | Jack W T Allen | Multiple connected transformer |
US3388299A (en) * | 1967-02-13 | 1968-06-11 | Sola Basic Ind Inc | Residential underground electric distribution assembly |
US3389302A (en) * | 1965-10-21 | 1968-06-18 | Wagner Electric Corp | Electrical inductive apparatus |
CH460121A (en) * | 1966-03-08 | 1968-07-31 | Gen Electric | Switching device with a vacuum circuit breaker immersed in a liquid |
US3668351A (en) * | 1969-07-30 | 1972-06-06 | Kearney National Inc | Sectionalizing and protective apparatus for single house transformer |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS518181A (en) * | 1974-07-11 | 1976-01-22 | Nippon Asbestos Co Ltd | Kensakukakoseino yoitainetsutaimamoseisekimenrooruyosekimenkiban |
JPS5543691Y2 (en) * | 1976-06-28 | 1980-10-14 |
-
1980
- 1980-10-07 JP JP55140744A patent/JPS5765207A/en active Granted
-
1981
- 1981-10-07 EP EP19810304666 patent/EP0049642B1/en not_active Expired
- 1981-10-07 DE DE8181304666T patent/DE3170311D1/en not_active Expired
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2246318A (en) * | 1939-08-11 | 1941-06-17 | Westinghouse Electric & Mfg Co | Power transformer |
FR1097411A (en) * | 1954-03-26 | 1955-07-05 | Electr De Pierrefitte Atel | Mobile armored transformer station |
GB1036101A (en) * | 1961-04-20 | 1966-07-13 | Brush Electrical Eng | A flameproof transformer incorporating switchgear |
GB947125A (en) * | 1961-05-19 | 1964-01-22 | Acec | A transformer box |
US3273053A (en) * | 1963-03-29 | 1966-09-13 | Jack W T Allen | Multiple connected transformer |
US3259808A (en) * | 1963-10-14 | 1966-07-05 | Mc Graw Edison Co | Ground level distribution transformer |
FR1428544A (en) * | 1964-12-31 | 1966-02-18 | Entpr Generale D Installations | New transformer station |
US3389302A (en) * | 1965-10-21 | 1968-06-18 | Wagner Electric Corp | Electrical inductive apparatus |
CH460121A (en) * | 1966-03-08 | 1968-07-31 | Gen Electric | Switching device with a vacuum circuit breaker immersed in a liquid |
US3388299A (en) * | 1967-02-13 | 1968-06-11 | Sola Basic Ind Inc | Residential underground electric distribution assembly |
US3668351A (en) * | 1969-07-30 | 1972-06-06 | Kearney National Inc | Sectionalizing and protective apparatus for single house transformer |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2251130B (en) * | 1990-11-13 | 1995-06-07 | Southwest Electric Co | Motor control system and components thereof |
US5216356A (en) * | 1990-11-13 | 1993-06-01 | Southwest Electric Company | Shielded three phase transformer with tertiary winding |
GB2251130A (en) * | 1990-11-13 | 1992-06-24 | Southwest Electric Co | Transformer and motor control system |
US5322971A (en) * | 1990-11-13 | 1994-06-21 | Southwest Electric Company | Motor control system and components thereof |
EP0822632A3 (en) * | 1991-08-23 | 1998-04-22 | Mitsubishi Denki Kabushiki Kaisha | Distributor |
EP0598130A4 (en) * | 1991-08-23 | 1996-12-27 | Mitsubishi Electric Corp | Distribution apparatus. |
EP0822632A2 (en) * | 1991-08-23 | 1998-02-04 | Mitsubishi Denki Kabushiki Kaisha | Distributor |
EP0598130A1 (en) * | 1991-08-23 | 1994-05-25 | Mitsubishi Denki Kabushiki Kaisha | Distribution apparatus |
US5861682A (en) * | 1991-08-23 | 1999-01-19 | Mitsubishi Denki Kabushiki Kaisha | Distributor |
US5449991A (en) * | 1993-09-20 | 1995-09-12 | Southwest Electric Company | Motor control system and apparatus for providing desired three-phase voltage therein using a main transformer energized through an autotransformer |
EP1113549A1 (en) * | 1999-12-30 | 2001-07-04 | ABB T&D Technologies Ltd. | Electric substation |
EP1113547A1 (en) * | 1999-12-30 | 2001-07-04 | ABB T&D Technologies Ltd. | Electric substation |
EP1113548A1 (en) * | 1999-12-30 | 2001-07-04 | ABB T&D Technologies Ltd. | Electric substation |
EP1113546A1 (en) * | 1999-12-30 | 2001-07-04 | ABB T&D Technologies Ltd. | Electric substation |
DE102007057017A1 (en) * | 2007-11-23 | 2009-05-28 | Siemens Ag | Arrangement with a switching device and a transformer |
WO2010133766A1 (en) * | 2009-05-20 | 2010-11-25 | Sakari Peltoniemi | Electricity distribution structure |
Also Published As
Publication number | Publication date |
---|---|
EP0049642B1 (en) | 1985-05-02 |
JPH0158725B2 (en) | 1989-12-13 |
DE3170311D1 (en) | 1985-06-05 |
JPS5765207A (en) | 1982-04-20 |
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