EP0720774B1 - High-voltage power switch with a cooling device for cooling the quenching gas - Google Patents
High-voltage power switch with a cooling device for cooling the quenching gas Download PDFInfo
- Publication number
- EP0720774B1 EP0720774B1 EP94924696A EP94924696A EP0720774B1 EP 0720774 B1 EP0720774 B1 EP 0720774B1 EP 94924696 A EP94924696 A EP 94924696A EP 94924696 A EP94924696 A EP 94924696A EP 0720774 B1 EP0720774 B1 EP 0720774B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal body
- quenching gas
- gas
- insulating
- quenching
- 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/76—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor
- H01H33/765—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor the gas-evolving material being incorporated in the contact material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H2033/888—Deflection of hot gasses and arcing products
Definitions
- the invention relates to a high-voltage circuit breaker with two contact pieces and with at least one gas outflow channel for quenching gas heated by the arc and with a cooling device for cooling the quenching gas, which consists of a metal body arranged in the flow path of the quenching gas with through openings.
- Such a high-voltage circuit breaker is known, for example, from the technical article "Development of the type 145 pm self-blast circuit breaker".
- a hollow cylindrical metal body is shown in the area of the interrupter unit, which consists of a metal wire mesh.
- the hot quenching gas can pass through the wire mesh and is cooled in the process, which leads to a rapid dielectric solidification of the isolating section.
- the object of the invention is accordingly to design the cooling device in a high-voltage circuit breaker of the type mentioned in such a way that the extinguishing gas is cooled efficiently and the cooling device has a long service life.
- an extinguishing gas-impermeable insulating material body is arranged in front of the metal body from a material which releases further extinguishing gas under the action of hot extinguishing gas, and in that the insulating material body is spaced from the metal body to such an extent that the extinguishing gas in can essentially pass through the through openings on the entire surface of the metal body.
- the metal body is protected from the direct action of the hot extinguishing gas by the insulating material body arranged in front of the metal body.
- the insulating body is also attacked by the hot extinguishing gas, but under the influence of the hot extinguishing gas it releases a gas which is also used for extinguishing and can be easily replaced.
- the insulating material body is evaporated, no electrically conductive steam is released which could contaminate the further insulating material body in the region of the interrupter unit and thus lead to a reduction in the dielectric strength.
- the spacing of the insulating material body from the metal body ensures that on the one hand the hot extinguishing gas does not strike the metal body directly, but on the other hand the extinguishing gas, after it has impinged on the insulating material body, passes around the insulating material body can flow off the entire cross section of the passage openings in the metal body.
- the invention is advantageously embodied in that the insulating body consists of PTFE.
- This material is particularly thermally stable and, when exposed to the hot quenching gas, emits gases which can themselves make an effective contribution to extinguishing the switching arc or to solidifying the isolating path.
- a further advantageous embodiment of the invention provides that the metal body is designed as a hollow cylinder and that the insulating material body is designed as an annular body in the interior of the metal body.
- This design is structurally particularly simple.
- the hot extinguishing gas which gets into the interior of the hollow cylinder, can flow out through the metal body after interacting with the insulating body. It is only necessary to fasten two bodies, namely the metal body and the insulating body, into one another.
- the insulating material body can have recesses in the areas not exposed to hot extinguishing gas or can also consist of several blocks which are arranged in front of the metal body at the locations which are particularly stressed by the hot extinguishing gas.
- the invention can also be advantageously designed in that the insulating body is connected to one end of the metal body.
- one of the contact pieces with a hollow one for removing the extinguishing gases Contact tube is connected, which at least partially penetrates the metal body and has radial openings for the extinguishing gas in the region of the metal body and that the insulating body is arranged in the region of the radial openings between the contact tube and the metal body.
- the contact piece and the contact tube as well as the insulating material body and the metal body can thus be combined in a simple manner to form a structural unit which can be accommodated in a space-saving manner in the housing of a circuit breaker.
- the quenching gas is offered a large passage cross section by the metal body.
- the metal body can advantageously consist, for example, of a wire mesh, in particular of copper wire.
- the figure schematically shows part of an interrupter unit in two half-sections.
- a circuit breaker with two stylized contacts 1, 2 is shown in schematic form.
- the interrupter unit 3 is arranged in a cylindrical, metallic encapsulation housing 4.
- the contact piece 1 surrounds the contact piece 2 in the switched-on state. In the switched-off state, the contact piece 1 is moved away from the contact piece 2 in the direction of the arrow 5.
- an arc is drawn in the area between the contact pieces 1, 2, through which the quenching gas, for example SF 6 , with which the cylindrical encapsulation housing 4 is filled, is strongly heated and thereby expands.
- the contact piece 2 is connected to a contact tube 6, which is hollow to remove the switching gases in the direction of arrows 7, 8, 9.
- the contact tube 6 has radial outflow openings 10, 11 at its end facing away from the contact piece 2, through which the extinguishing gas can flow radially out of the contact tube 6.
- the extinguishing gas Since the extinguishing gas is very hot after the switching process, it should be cooled as quickly as possible by mixing it with the extinguishing gas that is not under the influence of the arc, for example in the exterior, in order to achieve a rapid solidification of the separation distance between the contact pieces 1, 2.
- the hot extinguishing gas On the way from the contact tube 6 into the outside space, the hot extinguishing gas passes through a metal body 12, which consists of a copper wire mesh and in which the hot extinguishing gas is rapidly cooled by interaction with the metal surface. Because of the large number of through openings through the metal body 12, the flow resistance for the extinguishing gas is low.
- an annular insulating material body made of PTFE (polytetrafluoroethylene) is arranged between the outlet openings 10, 11 and the metal body 12, and the hot extinguishing gas initially hits it, before it reaches the metal body 12.
- PTFE polytetrafluoroethylene
- the insulating body 13 is fastened in a plate 15 which closes the cylindrical metal body 12 on the end face.
- the insulating body can, for example, be glued or screwed in there.
Abstract
Description
Die Erfindung bezieht sich auf einen Hochspannungs-Leistungsschalter mit zwei Kontaktstücken und mit wenigstens einem Gasabströmkanal für durch den Lichtbogen erhitztes Löschgas sowie mit einer Kühleinrichtung zur Kühlung des Löschgases, die aus einem im Strömungsweg des Löschgases angeordneten Metallkörper mit Durchtrittsöffnungen besteht.The invention relates to a high-voltage circuit breaker with two contact pieces and with at least one gas outflow channel for quenching gas heated by the arc and with a cooling device for cooling the quenching gas, which consists of a metal body arranged in the flow path of the quenching gas with through openings.
Ein solcher Hochspannungs-Leistungsschalter ist beispielsweise aus dem Fachartikel "Development of the type 145 pm self-blast circuit breaker" bekannt. Bei dem dort dargestellten Leistungsschalter ist im Bereich der Unterbrechereinheit ein hohlzylinderförmiger Metallkörper dargestellt, der aus einem Metalldrahtgeflecht besteht. Das heiße Löschgas kann durch das Drahtgeflecht hindurchtreten und wird dabei gekühlt, was zu einer schnellen dielektrischen Verfestigung der Trennstrecke führt.Such a high-voltage circuit breaker is known, for example, from the technical article "Development of the type 145 pm self-blast circuit breaker". In the circuit breaker shown there, a hollow cylindrical metal body is shown in the area of the interrupter unit, which consists of a metal wire mesh. The hot quenching gas can pass through the wire mesh and is cooled in the process, which leads to a rapid dielectric solidification of the isolating section.
Auch aus der DE-U-18 89 068 ist ein Hochspannungs-Leistungsschalter mit einem Kühlkörper im Strömungsweg eines Löschgases gemäß den Merkmalen des Oberbegriffs des Patentanspruchs 1 bekannt.From DE-U-18 89 068 a high-voltage circuit breaker with a heat sink in the flow path of an extinguishing gas is known according to the features of the preamble of claim 1.
Es hat sich gezeigt, daß ein solcher Metallkörper unter dem Einfluß des heißen Löschgases leicht korrodiert, bzw. Teile des Metallkörpers verdampft werden. Nach einer solchen Verdampfung kann nachfolgend produziertes heißes Löschgas durch den Metallkörper ungehindert und ungekühlt hindurchtreten, wodurch die übrigen Teile es Schalters beschädigt werden können. Außerdem schlägt sich der beim Verdampfen des Metallkörpers entstehende Metalldampf u. U. an Isolierstoffteilen nieder, was zu einer Herabsetzung der dielektrischen Festigkeit führt.
Die Aufgabe der Erfindung besteht demgemäß darin, bei einem Hochspannungs-Leistungsschalter der eingangs genannten Art die Kühleinrichtung so zu gestalten, daß in zuverlässiger Weise eine effiziente Kühlung des Löschgases bei langer Lebensdauer der Kühleinrichtung erfolgt.It has been shown that such a metal body easily corrodes under the influence of the hot extinguishing gas, or parts of the metal body are evaporated. After such evaporation, subsequently produced hot quenching gas can pass through the metal body unhindered and uncooled, as a result of which the other parts of the switch can be damaged. In addition, the strikes when the metal body evaporates resulting metal vapor u. U. low on insulating parts, which leads to a reduction in dielectric strength.
The object of the invention is accordingly to design the cooling device in a high-voltage circuit breaker of the type mentioned in such a way that the extinguishing gas is cooled efficiently and the cooling device has a long service life.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß in dem Gasabströmkanal von den Kontaktstücken aus gesehen vor dem Metallkörper ein löschgasundurchlässiger Isolierstoffkörper aus einem unter Einwirkung von heißem Löschgas weiteres Löschgas abgebenden Material angeordnet ist und daß der Isolierstoffkörper von dem Metallkörper soweit beabstandet ist, daß das Löschgas im wesentlichen auf der gesamten Oberfläche des Metallkörpers durch die Durchtrittsöffnungen hindurchtreten kann.The object is achieved in that, in the gas outflow channel, as seen from the contact pieces, an extinguishing gas-impermeable insulating material body is arranged in front of the metal body from a material which releases further extinguishing gas under the action of hot extinguishing gas, and in that the insulating material body is spaced from the metal body to such an extent that the extinguishing gas in can essentially pass through the through openings on the entire surface of the metal body.
Durch den vor dem Metallkörper angeordneten Isolierstoffkörper wird der Metallkörper vor der direkten Einwirkung des heißen Löschgases geschützt. Der Isolierstoffkörper wird zwar durch das heiße Löschgas ebenfalls angegriffen, jedoch setzt er unter dem Einfluß des heißen Löschgases ein ebenfalls zur Löschung dienendes Gas frei und kann leicht ausgetauscht werden. Außerdem wird beim Verdampfen des Isolierstoffkörpers kein elektrisch leitender Dampf frei, der weitere Isolierstoffkörper im Bereich der Unterbrechereinheit verschmutzen und somit zu einer Herabsetzung der dielektrischen Festigkeit führen könnte. Durch die Beabstandung des Isolierstoffkörpers von dem Metallkörper wird erreicht, daß einerseits das heiße Löschgas nicht direkt auf den Metallkörper trifft, daß aber andererseits das Löschgas, nachdem es auf den Isolierstoffkörper geprallt ist, um den Isolierstoffkörper herum durch den gesamten Querschnitt der Durchtrittsöffnungen in dem Metallkörper abströmen kann. Die Erfindung wird vorteilhaft dadurch ausgestaltet, daß der Isolierstoffkörper aus PTFE besteht.The metal body is protected from the direct action of the hot extinguishing gas by the insulating material body arranged in front of the metal body. The insulating body is also attacked by the hot extinguishing gas, but under the influence of the hot extinguishing gas it releases a gas which is also used for extinguishing and can be easily replaced. In addition, when the insulating material body is evaporated, no electrically conductive steam is released which could contaminate the further insulating material body in the region of the interrupter unit and thus lead to a reduction in the dielectric strength. The spacing of the insulating material body from the metal body ensures that on the one hand the hot extinguishing gas does not strike the metal body directly, but on the other hand the extinguishing gas, after it has impinged on the insulating material body, passes around the insulating material body can flow off the entire cross section of the passage openings in the metal body. The invention is advantageously embodied in that the insulating body consists of PTFE.
Dieses Material ist thermisch besonders stabil und gibt bei Einwirkung des heißen Löschgases solche Gase ab, die selbst einen effektiven Beitrag zur Löschung des Schaltlichtbogens bzw. zur Verfestigung der Trennstrecke leisten können.This material is particularly thermally stable and, when exposed to the hot quenching gas, emits gases which can themselves make an effective contribution to extinguishing the switching arc or to solidifying the isolating path.
Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, daß der Metallkörper als Hohlzylinder ausgebildet ist und daß der Isolierstoffkörper als ringförmiger Körper im Inneren des Metallkörpers ausgebildet ist.A further advantageous embodiment of the invention provides that the metal body is designed as a hollow cylinder and that the insulating material body is designed as an annular body in the interior of the metal body.
Diese Gestaltung ist konstruktiv besonders einfach. Das heiße Löschgas, das in das Innere des Hohlzylinders gelangt, kann nach einer Wechselwirkung mit dem Isolierstoffkörper nach außen durch den Metallkörper hindurchströmen. Es ist dafür nur die Befestigung zweier Körper, nämlich des Metallkörpers und des Isolierstoffkörpers ineinander notwendig.This design is structurally particularly simple. The hot extinguishing gas, which gets into the interior of the hollow cylinder, can flow out through the metal body after interacting with the insulating body. It is only necessary to fasten two bodies, namely the metal body and the insulating body, into one another.
Der Isolierstoffkörper kann in den nicht mit heißem Löschgas beaufschlagten Bereichen Ausnehmungen aufweisen oder auch aus mehreren Blöcken bestehen, die an den besonders durch das heiße Löschgas beanspruchten Stellen vor dem Metallkörper angeordnet sind.The insulating material body can have recesses in the areas not exposed to hot extinguishing gas or can also consist of several blocks which are arranged in front of the metal body at the locations which are particularly stressed by the hot extinguishing gas.
Die Erfindung kann außerdem vorteilhaft dadurch gestaltet sein, daß der Isolierstoffkörper mit einem Ende des Metallkörpers tragend verbunden ist.The invention can also be advantageously designed in that the insulating body is connected to one end of the metal body.
Es erweist sich außerdem als vorteilhaft, daß eines der Kontaktstücke mit einem zur Abfuhr der Löschgase hohl ausgebildeten Kontaktrohr verbunden ist, das den Metallkörper wenigstens teilweise durchsetzt und im Bereich des Metallkörpers radiale Öffnungen für das Löschgas aufweist und daß der Isolierstoffkörper im Bereich der radialen Öffnungen zwischen dem Kontaktrohr und dem Metallkörper angeordnet ist.It also proves to be advantageous that one of the contact pieces with a hollow one for removing the extinguishing gases Contact tube is connected, which at least partially penetrates the metal body and has radial openings for the extinguishing gas in the region of the metal body and that the insulating body is arranged in the region of the radial openings between the contact tube and the metal body.
Das Kontaktstück und das Kontaktrohr sowie der Isolierstoffkörper und der Metallkörper können somit auf einfache Weise zu einer konstruktiven Einheit zusammengefaßt werden, die im Gehäuse eines Leistungsschalters platzsparend unterzubringen ist. Außerdem wird durch den Metallkörper dem Löschgas ein hoher Durchtrittsquerschnitt angeboten. Der Metallkörper kann vorteilhaft beispielsweise aus einem Drahtgeflecht, insbesondere aus Kupferdraht bestehen.The contact piece and the contact tube as well as the insulating material body and the metal body can thus be combined in a simple manner to form a structural unit which can be accommodated in a space-saving manner in the housing of a circuit breaker. In addition, the quenching gas is offered a large passage cross section by the metal body. The metal body can advantageously consist, for example, of a wire mesh, in particular of copper wire.
Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels an einer Zeichnung gezeigt und anschließend beschrieben.In the following, the invention is shown using an exemplary embodiment on a drawing and then described.
Dabei zeigt die Figur einen Teil einer Unterbrechereinheit schematisch in zwei Halbschnitten. In der Figur ist in schematischer Form ein Leistungsschalter mit zwei stilisiert dargestellten Kontaktstücken 1, 2 dargestellt. Die Unterbrechereinheit 3 ist in einem zylindrischen, metallischen Kapselungsgehäuse 4 angeordnet. Das Kontaktstück 1 umgibt im Einschaltzustand das Kontaktstück 2. Im Ausschaltzustand ist das Kontaktstück 1 in Richtung des Pfeils 5 von dem Kontaktstück 2 wegbewegt.The figure schematically shows part of an interrupter unit in two half-sections. In the figure, a circuit breaker with two
Beim Schaltvorgang wird im Bereich zwischen den Kontaktstücken 1, 2 ein Lichtbogen gezogen, durch den das Löschgas, beispielsweise SF6, mit dem das zylindrische Kapselungsgehäuse 4 gefüllt ist, stark erhitzt wird und dadurch expandiert. Das Kontaktstück 2 ist mit einem Kontaktrohr 6 verbunden, das zur Abfuhr der Schaltgase in Richtung der Pfeile 7, 8, 9 hohl ausgebildet ist. Das Kontaktrohr 6 weist radiale Abströmöffnungen 10, 11 an seinen dem Kontaktstück 2 abgewandten Ende auf, durch die das Löschgas radial aus den Kontaktrohr 6 abströmen kann. Da das Löschgas nach dem Schaltvorgang sehr heiß ist, soll es durch Vermischung mit dem nicht unter dem Einfluß des Lichtbogens stehenden Löschgas, beispielsweise in dem Außenraum möglichst schnell abgekühlt werden, um eine schnelle Verfestigung der Trennstrecke zwischen den Kontaktstücken 1, 2 zu erreichen. Auf dem Weg vom Kontaktrohr 6 in den Außenraum passiert das heiße Löschgas einen Metallkörper 12, der aus einem Kupferdrahtgeflecht besteht und in dem das heiße Löschgas durch Wechselwirkung mit der Metalloberfläche schnell abgekühlt wird. Dabei ist wegen der Vielzahl der Durchtrittsöffnungen durch den Metallkörper 12 der Strömungswiderstand für das Löschgas gering.During the switching process, an arc is drawn in the area between the
Um zu verhindern, daß durch direkte Einwirkung des heißen Löschgases der Metallkörper 12 teilweise korrodiert, bzw. verdampft, ist zwischen den Austrittsöffnungen 10, 11 und dem Metallkörper 12 ein ringförmiger Isolierstoffkörper aus PTFE (Polytetrafluoräthylen) angeordnet, auf den das heiße Löschgas zunächst auftrifft, bevor es den Metallkörper 12 erreicht. Beim Auftreffen des heißen Löschgases auf den Isolierstoffkörper 13, 14 wird in dem Material des Isolierstoffkörpers 13, 14 Gas freigesetzt, das ebenfalls zur Löschung des Lichtbogens dienen kann.In order to prevent the
Erst, nachdem das Löschgas durch diesen Isolierstoffkörper abgelenkt worden ist, strömt es zu dem Metallkörper 12.Only after the extinguishing gas has been deflected by this insulating material body does it flow to the
Es findet somit auch eine gute Verwirbelung des heißen Löschgases statt.There is therefore also a good swirling of the hot extinguishing gas.
Der Isolierstoffkörper 13 ist in einer Platte 15 befestigt, die den zylindrischen Metallkörper 12 stirnseitig abschließt. Der Isolierstoffkörper kann dort beispielsweise angeklebt oder eingeschraubt sein.The
Es ist aber auch möglich, wie im unteren Halbschnitt dargestellt, den Isolierstoffkörper 14 auf Stegen oder einzelnen Füßen 16 direkt an der inneren Mantelfläche des Metallkörpers 12 zu haltern. Auch hier ist eine Befestigung durch Kleben oder Schrauben möglich.However, it is also possible, as shown in the lower half section, to hold the insulating
Claims (5)
- High-voltage circuit-breaker having two contact pieces (1, 2) and having at least one gas discharge channel (17) for quenching gas heated by the electric arc, as well as having a cooling device (12) for cooling the quenching gas, which cooling device consists of a metal body (12) having passage openings (18) that is arranged in the flow path of the quenching gas, characterised in that arranged inside the gas discharge channel, in front of the metal body when seen from the contact pieces (1, 2), is an insulating-material body (13, 14) which is impermeable to quenching gas and consists of a material which, under the action of hot quenching gas, gives off more quenching gas, and in that the insulating-material body (13, 14) is distanced so far from the metal body (12) that the quenching gas can pass through the passage openings (18) substantially to the whole surface of the metal body.
- High-voltage circuit-breaker according to claim 1, characterised in that the insulating-material body (13, 14) consists of PTFE.
- High-voltage circuit-breaker according to claim 1 or 2, characterised in that the metal body (12) is constructed as a hollow cylinder, and in that the insulating-material body (13, 14) is constructed as an annular body inside the metal body (12).
- High-voltage circuit-breaker according to claim 1 or one of the claims that follows it, characterised in that the insulating-material body (13, 14) is connected in a load-bearing manner to one end of the metal body (12).
- High-voltage circuit-breaker according to claim 1 or one of the claims that follows it, characterised in that one of the contact pieces (12) is connected to a contact tube (6), which is constructed in a manner such that it is hollow in order to carry off the quenching gases, penetrates the metal body (12) at least partially and has in the region of the metal body (12) radial openings (10, 11) for the quenching gas, and in that the insulating-material body (13, 14) is arranged between the contact tube (6) and the metal body (12), in the region of the radial openings.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9314779U | 1993-09-24 | ||
| DE9314779U DE9314779U1 (en) | 1993-09-24 | 1993-09-24 | High-voltage circuit breaker with a cooling device for cooling the extinguishing gas |
| PCT/DE1994/000988 WO1995008834A1 (en) | 1993-09-24 | 1994-08-22 | High-voltage power switch with a cooling device for cooling the quenching gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0720774A1 EP0720774A1 (en) | 1996-07-10 |
| EP0720774B1 true EP0720774B1 (en) | 1997-05-14 |
Family
ID=6898752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94924696A Expired - Lifetime EP0720774B1 (en) | 1993-09-24 | 1994-08-22 | High-voltage power switch with a cooling device for cooling the quenching gas |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5717183A (en) |
| EP (1) | EP0720774B1 (en) |
| DE (2) | DE9314779U1 (en) |
| WO (1) | WO1995008834A1 (en) |
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| US7893379B2 (en) | 2004-12-24 | 2011-02-22 | Abb Technology Ag | Generator circuit breaker with improved switching capacity |
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|---|---|---|---|---|
| DE9314779U1 (en) * | 1993-09-24 | 1993-11-25 | Siemens Ag | High-voltage circuit breaker with a cooling device for cooling the extinguishing gas |
| DE19720090C2 (en) * | 1997-05-14 | 2003-08-14 | Abb Patent Gmbh | High voltage circuit breaker |
| DE19832709C5 (en) * | 1998-07-14 | 2006-05-11 | Siemens Ag | High voltage circuit breaker with one interrupter unit |
| DE19928077B4 (en) * | 1999-06-11 | 2009-04-23 | Siemens Ag | High voltage circuit breaker |
| DE19928080C5 (en) | 1999-06-11 | 2006-11-16 | Siemens Ag | High voltage circuit breaker with a discharge channel |
| US6926547B2 (en) | 2001-07-06 | 2005-08-09 | Delphi Technologies, Inc. | Electrical connector |
| DE10221576B4 (en) * | 2002-05-08 | 2006-06-01 | Siemens Ag | Electrical switching device with a cooling device |
| DE10221580B3 (en) * | 2002-05-08 | 2004-01-22 | Siemens Ag | Circuit breaker unit of a high voltage circuit breaker |
| EP1403891B2 (en) * | 2002-09-24 | 2016-09-28 | ABB Schweiz AG | Circuit breaker |
| ATE458259T1 (en) | 2005-09-26 | 2010-03-15 | Abb Technology Ag | HIGH VOLTAGE SWITCH WITH IMPROVED SWITCHING PERFORMANCE |
| ATE508466T1 (en) | 2006-03-14 | 2011-05-15 | Abb Technology Ag | SWITCH CHAMBER FOR A GAS INSULATED HIGH VOLTAGE SWITCH |
| FR2924267A1 (en) | 2007-11-22 | 2009-05-29 | Areva T & D Sa | HIGH VOLTAGE CIRCUIT BREAKER WITH IMPROVED GAS EXHAUST |
| DE102009009451A1 (en) * | 2009-02-13 | 2010-08-19 | Siemens Aktiengesellschaft | Switchgear assembly with a switching path |
| WO2010122663A1 (en) * | 2009-04-24 | 2010-10-28 | 三菱電機株式会社 | Conductor for high voltage electric apparatus |
| ES2536833T3 (en) * | 2012-08-17 | 2015-05-29 | Abb Technology Ltd | A circuit breaker |
| JPWO2014171208A1 (en) * | 2013-04-18 | 2017-02-16 | 株式会社日立製作所 | Gas circuit breaker |
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|---|---|---|---|---|
| BE639120A (en) * | 1962-10-27 | |||
| DE1889068U (en) * | 1964-01-18 | 1964-03-12 | Concordia Maschinen Und Elek Z | PIPE SLOT CHAMBER WITH COOLING DEVICE. |
| NL129727C (en) * | 1966-12-28 | |||
| US3814883A (en) * | 1970-07-01 | 1974-06-04 | Westinghouse Electric Corp | Gas-blast circuit interrupter with insulating arc shield |
| CH557589A (en) * | 1973-04-24 | 1974-12-31 | Bbc Brown Boveri & Cie | IN A SWITCHING CHAMBER OF AN ELECTRIC GAS SWITCH, IN PARTICULAR A SF6 COMPRESSED GAS SWITCH, A COMPONENT MADE OF A MATERIAL EMITING GAS UNDER THE EFFECT OF ARC HEAT. |
| DE2411836A1 (en) * | 1974-03-12 | 1975-09-18 | Siemens Ag | Gas blast piston-type cct. breaker - has tubular electrode with nozzle end and heat exchanger of metal sheet |
| US4328403A (en) * | 1977-02-15 | 1982-05-04 | Westinghouse Electric Corp. | Single barrel puffer circuit interrupter |
| US4149051A (en) * | 1977-04-27 | 1979-04-10 | Westinghouse Electric Corp. | Electrically conducting gas condenser support for a puffer circuit interrupter |
| CH645753A5 (en) * | 1979-05-22 | 1984-10-15 | Sprecher & Schuh Ag | Gas-blast circuit breaker |
| CH643087A5 (en) * | 1979-11-30 | 1984-05-15 | Sprecher & Schuh Ag | Gas-blast circuit breaker |
| DD218496A1 (en) * | 1983-04-12 | 1985-02-06 | Inst Prueffeld Elekt | COOLER FOR GAS DELIVERY SYSTEMS ELECTRICAL SWITCH, ESPECIALLY SWITCH DISCONNECTORS |
| DE3440212A1 (en) * | 1984-10-10 | 1986-04-17 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | EXHAUST GAS SWITCH |
| JPH0797467B2 (en) * | 1984-12-20 | 1995-10-18 | 三菱電機株式会社 | Ground tank type gas shield and disconnector |
| FR2628259A1 (en) * | 1988-03-01 | 1989-09-08 | Merlin Gerin | ELECTRICAL SHUT-OFF CIRCUIT BREAKER BY SHOCKPING OR EXPANSION OF INSULATING GAS |
| DE3915700C3 (en) * | 1989-05-13 | 1997-06-19 | Aeg Energietechnik Gmbh | Compressed gas switch with evaporative cooling |
| KR910014970A (en) * | 1990-01-08 | 1991-08-31 | 미다 가쓰시게 | Gas breaker |
| DE9314779U1 (en) * | 1993-09-24 | 1993-11-25 | Siemens Ag | High-voltage circuit breaker with a cooling device for cooling the extinguishing gas |
-
1993
- 1993-09-24 DE DE9314779U patent/DE9314779U1/en not_active Expired - Lifetime
-
1994
- 1994-08-22 WO PCT/DE1994/000988 patent/WO1995008834A1/en active IP Right Grant
- 1994-08-22 EP EP94924696A patent/EP0720774B1/en not_active Expired - Lifetime
- 1994-08-22 US US08/619,545 patent/US5717183A/en not_active Expired - Fee Related
- 1994-08-22 DE DE59402778T patent/DE59402778D1/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7893379B2 (en) | 2004-12-24 | 2011-02-22 | Abb Technology Ag | Generator circuit breaker with improved switching capacity |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0720774A1 (en) | 1996-07-10 |
| US5717183A (en) | 1998-02-10 |
| WO1995008834A1 (en) | 1995-03-30 |
| DE59402778D1 (en) | 1997-06-19 |
| DE9314779U1 (en) | 1993-11-25 |
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