EP0002685A1 - Fluid-blast circuit breaker - Google Patents
Fluid-blast circuit breaker Download PDFInfo
- Publication number
- EP0002685A1 EP0002685A1 EP78101559A EP78101559A EP0002685A1 EP 0002685 A1 EP0002685 A1 EP 0002685A1 EP 78101559 A EP78101559 A EP 78101559A EP 78101559 A EP78101559 A EP 78101559A EP 0002685 A1 EP0002685 A1 EP 0002685A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching element
- movable
- contact piece
- switching
- switch
- 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
- 238000000926 separation method Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 abstract description 4
- 230000005291 magnetic effect Effects 0.000 description 5
- 238000007664 blowing Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
Images
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
- H01H33/88—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
- H01H33/90—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 this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/901—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 this movement being effected by or in conjunction with the contact-operating mechanism making use of the energy of the arc or an auxiliary arc
-
- 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
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
Definitions
- the invention relates to a gas pressure switch with a movable switching element, a counter switching element and a nozzle opening which can be penetrated by the movable switching element in a wall dividing the switching chamber for generating an extinguishing gas flow initiated by the arc.
- the extinguishing gas flow is started by an auxiliary arc drawn in the course of the switch-off action, which blows the arc drawn between the movable switching element and the counter switching element.
- the quenching gas flow is dependent on the current to be switched off or the current flowing via the arc. In some cases it is desirable to additionally start an independent extinguishing gas flow as soon as a switch-off command is given.
- the invention has for its object to provide a gas pressure switch of the type mentioned, in which in addition to the current-dependent generation of an extinguishing gas flow, a current-independent extinguishing gas flow is achieved.
- the counter-switching element is arranged on a piston which is spring-loaded in the switching-off direction and which follows the moving switching element at the beginning of the switching-off movement and thereby pre-compresses the gas located between its front side facing the movable switching element and the wall.
- the carrier in the known pressure gas switch is not designed as a piston, which precompresses the gas causes.
- the counter-switching piece is surrounded by a first coil through which the switching current flows after the galvanic separation from the movable switching element and which is connected in opposition to a further coil driven by the switching switching element and through which the switching current flows.
- the development of the inventive concept differs from the aforementioned prior art by the further coil, which is driven by a movable switching element and also flows through the breaking current and is connected in opposition to the first.
- the magnetic field can be formed in a particularly favorable manner, so that the quenching conditions and thus the switch-off conditions of high currents are favored.
- the first coil can be formed by a spirally slotted hollow cylinder made of electrically conductive material, which is rigidly connected to the piston.
- the second coil is preferably formed by a spirally slotted hollow cylindrical part of the movable switching element, in the interior of which a ferromagnetic body can be arranged.
- the end faces of the coils can carry erosion electrodes in order to have sufficient wear resistance when subjected to arcing.
- a gas pressure switch according to the invention is shown schematically in section.
- FIG. 2 schematically shows a second embodiment of a compressed gas switch according to the invention in a sectional view.
- the compressed gas switch shown in Fig. 1 has one hollow cylindrical, for example made of porcelain switching chamber 1, in the interior 2 is filled as a gaseous extinguishing and insulating sulfur hexafluoride.
- a movable contact piece 3 is provided centrally in the interior, which interacts with a counter contact piece 4.
- the counter switching element 4 is electrically connected to a terminal 6 via a current band 5.
- the connection 6 is seated on a cap 7 which closes the switching chamber 1 at the end.
- the cap 7 has a tubular support 8 directed into the interior 2, which consists at least partially of insulating material and holds a wall 9 dividing the switching chamber 1.
- the wall 9 in turn carries a nozzle 10 which comprises the movable contact piece 3 in the switched-on position.
- the carrier 8 is partially designed as a cylinder, in which a piston 11 is guided to move back and forth.
- the piston is loaded in the switch-off direction by springs 12 which are supported against the cap 7.
- the piston carries the counter-switching piece 4, which assumes the position shown on the right of the center line 13 in the switch-on position and the position on the left of the center line 13 in the switch-off position.
- the movable contact piece 3 If the movable contact piece 3 is moved into the switch-off position in the direction of arrow 14 due to a switch-off command, the counter-contact piece 4 and the spring-loaded piston 11 follow the movable contact piece 3 a certain distance.
- the gas located between the end face 15 of the piston 11 and the wall 9 is pre-compressed until the electrical isolation between the switching elements 3, 4 takes place.
- the arc drawn is flushed and cooled by the compressed gas.
- the contact piece 3 is pulled further down in the course of the opening movement until it leaves the nozzle 10, so that the space between the arc 11 burning the piston 11 and the wall 9 starts an extinguishing gas flow through the nozzle 10 as a result of the pressure increase caused by the burning arc.
- the counter-switching element 4 is surrounded by a coil 16, which is flowed through by the current after the galvanic separation of the movable switching element 3 from the counter-switching element 4 and a magnetic field for additional Blowing the arc results.
- the switching piece 3 is slotted in the region of its free end 3a in a cylindrical helix, so that it forms a second coil which is separated from the switch-off current, i. H. is flowed through by the arc current.
- This second coil 17 is connected to the first coil 16.
- the first coil 16 is formed by a spirally slotted hollow cylinder, which consists of electrically conductive material and is rigidly connected to the piston 11.
- the coil 17 is formed by a spirally slotted hollow cylindrical part of the movable contact piece 3.
- a ferromagnetic body 18 is arranged in the interior of the hollow cylindrical part of the movable contact piece 3, which contributes to an amplification of the magnetic field.
- the end faces 19, 20 of the coils 16, 17 carry erosion electrodes 21, which ensure high wear resistance under arcing stress.
- the embodiment of the compressed gas switch according to the invention is particularly suitable for high interruption voltages and with low driving forces. You ver combines the advantages of pressure gas switches with current-dependent and current-independent extinguishing gas flow.
Landscapes
- Circuit Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Der Anmeldungsgegenstand betrifft einen Druckgasschalter mit einem beweglichen Schaltstück (3), einem Gegenschaltstück (4) und einer vom beweglichen Schaltstück (3) durchsetzbaren Düsenöffnung (10) in einer die Schaltkammer (2) unterteilenden Wand (9). Diese Wand (9) dient zur Erzeugung einer vom Lichtbogen eingeleiteten Löschgasströmung. Zusätzlich zu der stromabhängigen Löschgasströmung wird erfindungsgemäß eine stromunabhängige Löschgasströmung im Verlauf der Ausschalthandlung dadurch in Gang gesetzt, daß das Gegenschaltstück (4) auf einem in Ausschaltrichtung federbelasteten Kolben (11) angeordnet ist, der zu Beginn der Ausschaltbewegung des beweglichen Schaltstückes (3) diesem nachläuft und dabei das zwischen seiner dem beweglichen Schaltstück (3) zugewandten Stirnseite (15) und der Wand (9) befindliche Gas komprimiert.The subject of the application relates to a gas pressure switch with a movable switching element (3), a counter switching element (4) and a nozzle opening (10) which can be penetrated by the movable switching element (3) in a wall (9) dividing the switching chamber (2). This wall (9) is used to generate an extinguishing gas flow initiated by the arc. In addition to the current-dependent extinguishing gas flow, according to the invention a current-independent extinguishing gas flow is set in motion in the course of the switch-off action in that the counter-switching element (4) is arranged on a piston (11) which is spring-loaded in the switching-off direction and which follows the movable switching element (3) at the beginning of the switching-off movement and compresses the gas located between its end face (15) facing the movable contact piece (3) and the wall (9).
Der erfindungsgemäße Druckgasschalter ist als Leistungsschalter und als Lasttrennschalter in Hochspannungsnetzen einsetzbar.
Description
Die Erfindung bezieht sich auf einen Druckgasschalter mit einem beweglichen Schaltstück, einem Gegenschaltstück und einer vom beweglichen Schaltstück durchsetzbaren Düsenöffnung in einer die Schaltkammer unterteilenden Wand zur Erzeugung einer vom Lichtbogen eingeleiteten Löschgasströmung.The invention relates to a gas pressure switch with a movable switching element, a counter switching element and a nozzle opening which can be penetrated by the movable switching element in a wall dividing the switching chamber for generating an extinguishing gas flow initiated by the arc.
Bei einem derartigen, aus der DE-OS 23 49 246 bekannten Druckgasschalter wird die Löschgasströmung durch einen im Verlauf der Ausschalthandlung gezogenen Hilfslichtbogen in Gang gesetzt, die den zwischen dem beweglichen Schaltstück und dem Gegenschaltstück gezogenen Lichtbogen bebläst. Bei der bekannten Ausführungsform ist die Löschgasströmung abhängig vom abzuschaltenden Strom bzw. den über den Lichtbogen fließenden Strom. In einigen Fällen ist es erwünscht, zusätzlich eine davon unabhängige Löschgasströmung in Gang zu setzen, sobald ein Ausschaltkommando gegeben wird.In such a pressure gas switch known from DE-OS 23 49 246, the extinguishing gas flow is started by an auxiliary arc drawn in the course of the switch-off action, which blows the arc drawn between the movable switching element and the counter switching element. In the known embodiment, the quenching gas flow is dependent on the current to be switched off or the current flowing via the arc. In some cases it is desirable to additionally start an independent extinguishing gas flow as soon as a switch-off command is given.
Der Erfindung liegt die Aufgabe zugrunde, einen Druckgasschalter der eingangs genannten Art anzugeben, bei dem zusätzlich zur stromabhängigen Erzeugung einer Löschgasströmung eine stromunabhängige Löschgasströmung erzielt wird.The invention has for its object to provide a gas pressure switch of the type mentioned, in which in addition to the current-dependent generation of an extinguishing gas flow, a current-independent extinguishing gas flow is achieved.
Nach der Erfindung wird dies dadurch gelöst, daß das Gegenschaltstück auf einem in Ausschaltrichtung federbelasteten Kolben angeordnet ist, der zu Beginn der Ausschaltbewegung des beweglichen Schaltstückes diesem nachläuft und dabei das zwischen seiner dem beweglichen Schaltstück zugewandten Stirnseite und der Wand befindliche Gas vorkomprimiert.According to the invention, this is achieved in that the counter-switching element is arranged on a piston which is spring-loaded in the switching-off direction and which follows the moving switching element at the beginning of the switching-off movement and thereby pre-compresses the gas located between its front side facing the movable switching element and the wall.
Zwar sitzt beim Schalter nach der DE-OS 23 49 246 das Gegenschaltstück auf einem federbelasteten Träger, der das Gegenschaltstück dem in Ausschaltrichtung bewegten beweglichen Schaltstück eine bestimmte Strecke nachführt, jedoch ist der Träger beim bekannten Druckgasschalter nicht als Kolben ausgebildet, der eine Vorkompression des Gases bewirkt.Although in the switch according to DE-OS 23 49 246 the counter-switch sits on a spring-loaded carrier, which tracks the counter-switch to the moving switch moving in the direction of switching off a certain distance, the carrier in the known pressure gas switch is not designed as a piston, which precompresses the gas causes.
Durch Anwendung der Erfindung ist es möglich, Ströme unterschiedlicher Größe sicher abzuschalten.By using the invention it is possible to safely switch off currents of different sizes.
Bei einem bevorzugten Ausführungsbeispiel des Druckgasschalters nach der Erfirdung ist das Gegenschaltstück von einer vom Ausschaltstrom nach der galvanischen Trennung vom beweglichen Schaltstück durchflossenen ersten Spule umgeben, der eine weitere mit dem beweglichen Schaltstück angetriebene, vom Ausschaltstrom durchflossene Spule entgegengeschaltet ist.In a preferred exemplary embodiment of the compressed gas switch according to the invention, the counter-switching piece is surrounded by a first coil through which the switching current flows after the galvanic separation from the movable switching element and which is connected in opposition to a further coil driven by the switching switching element and through which the switching current flows.
Aus der DE-OS 24 23 103 ist ein Schalter mit einer das Gegenschaltstück umgebenden und vom Ausschaltstrom nach der galvanischen Trennung der Schaltstücke stromdurchflossenen Spule bekannt, die ein magnetisches Feld erzeugt und auf den Lichtbogen einwirkt. Die dadurch gegebene magnetische Blaswirkung führt zu verbesserten Löschbedingungen.From DE-OS 24 23 103 a switch is known with a coil surrounding the counter contact and current flowing through the switch-off current after the galvanic separation of the contacts, which he a magnetic field testifies and acts on the arc. The resulting magnetic blowing effect leads to improved extinguishing conditions.
Die Weiterbildung des Erfindungsgedankens unterscheidet sich vom vorgenannten Stand der Technik durch die weitere mit einem beweglichen Schaltstück angetriebene und gleichfalls vom Ausschaltstrom durchflossene Spule, die der ersten entgegengeschaltet ist. Dadurch läßt sich das Magnetfeld in besonders günstiger Weise ausbilden, so daß die Löschbedingungen und damit die Abschaltbedingungen hoher Ströme begünstigt sind.The development of the inventive concept differs from the aforementioned prior art by the further coil, which is driven by a movable switching element and also flows through the breaking current and is connected in opposition to the first. As a result, the magnetic field can be formed in a particularly favorable manner, so that the quenching conditions and thus the switch-off conditions of high currents are favored.
Dabei kann die erste Spule von einem spiralig geschlitzten Hohlzylinder aus elektrisch leitendem Material gebildet sein, der mit dem Kolben starr verbunden ist. Die zweite Spule ist bevorzugt von einem spiralig geschlitzten hohlzylindrischen Teil des beweglichen Schaltstückes gebildet, in dessen Inneren ein ferromagnetischer Körper angeordnet sein kann.The first coil can be formed by a spirally slotted hollow cylinder made of electrically conductive material, which is rigidly connected to the piston. The second coil is preferably formed by a spirally slotted hollow cylindrical part of the movable switching element, in the interior of which a ferromagnetic body can be arranged.
Bei dieser Ausführungsform, können die Stirnflächen der Spulen Abbrandelektroden tragen, um eine ausreichende Verschleißfestigkeit bei Lichtbogenbeanspruchung zu haben.In this embodiment, the end faces of the coils can carry erosion electrodes in order to have sufficient wear resistance when subjected to arcing.
Anhand der Zeichnung sind Ausführungsbeispiele der Erfindung beschrieben und die Wirkungsweise erläutert.Exemplary embodiments of the invention are described with reference to the drawing and the mode of operation is explained.
In Fig. 1 ist ein Druckgasschalter nach der Erfindung schematisch im Schnitt dargestellt.In Fig. 1, a gas pressure switch according to the invention is shown schematically in section.
Die Figur 2 zeigt schematisch eine zweite Ausführungsform eines Druckgasschalters nach der Erfindung in geschnittener Darstellung.FIG. 2 schematically shows a second embodiment of a compressed gas switch according to the invention in a sectional view.
Der in Fig. 1 dargestellte Druckgasschalter weist eine hohlzylindrische, beispielsweise aus Porzellan bestehende Schaltkammer 1 auf, in deren Innenraum 2 als gasförmiges Lösch- und Isoliermittel Schwefelhexafluorid eingefüllt ist. Zentrisch im Innenraum ist ein bewegliches Schaltstück 3 vorgesehen, das mit einem Gegenschaltstück 4 zusammenwirkt. Das Gegenschaltstück 4 ist elektrisch über ein Stromband 5 mit einem Anschluß 6 verbunden. Der Anschluß 6 sitzt auf einer die Schaltkammer 1 stirnseitig verschließenden Kappe 7. Die Kappe 7 hat einen in den Innenraum 2 gerichteten rohrförmigen Träger 8, der zumindest teilweise aus isolierendem Material besteht und eine die Schaltkammer 1 unterteilende Wand 9 haltert. Die Wand 9 trägt ihrerseits eine Düse 10, die das bewegliche Schaltstück 3 in der Einschaltstellung umfaßt.The compressed gas switch shown in Fig. 1 has one hollow cylindrical, for example made of porcelain switching chamber 1, in the
Der Träger 8 ist teilweise als Zylinder ausgebildet, in dem ein Kolben 11 hin und her beweglich geführt ist. Der Kolben ist in Ausschaltrichtung von Federn 12 belastet, die sich gegen die Kappe 7 abstützen. Der Kolben trägt das Gegenschaltstück 4, das in der Einschaltstellung die rechts der Mittellinie 13 und in der Ausschaltstellung die links der Mittellinie 13 gezeichnete Position einnimmt.The
Wenn das bewegliche Schaltstück 3 aufgrund eines Ausschaltkommandos in Pfeilrichtung 14 in die Ausschaltstellung überführt wird, läuft das Gegenschaltstück 4 und der federbelastete Kolben 11 dem beweglichen Schaltstück 3 eine bestimmte Strecke nach. Dabei wird das zwischen der Stirnseite 15 des Kolbens 11 und der Wand 9 befindliche Gas vorkomprimiert, bis die galvanische Trennung zwischen den Schaltstücken 3, 4 erfolgt. Der dabei gezogene Lichtbogen wird von dem komprimierten Gas bespült und gekühlt. Das Schaltstück 3 wird im Verlauf der Ausschaltbewegung weiter nach unten gezogen, bis es die Düse 10 verläßt, so daß der im Raum zwischen dem Kolben 11 und der Wand 9 brennende Lichtbogen infolge der durch den brennenden Lichtbogen bewirkten Druckerhöhung eine Löschgasströmung durch die Düse 10 in Gang setzt.If the
Bei dem in Fig. 2 dargestellten Ausführungsbeispiel, bei dem gleiche Teile mit gleichen Bezugszeichen versehen sind, ist das Gegenschaltstück 4 von einer Spule 16 umgeben, die nach der galvanischen Trennung des beweglichen Schaltstückes 3 vom Gegenschaltstück 4 vom Strom durchflossen ist und ein Magnetfeld zur zusätzlichen Beblasung des Lichtbogens ergibt. Das Schaltstück 3 ist im Bereich seines freien Endes 3a in einer zylindrischen Schraubenlinie geschlitzt, so daß es eine zweite Spule bildet, die vom Ausschaltstrom, d. h. vom Lichtbogenstrom, durchflossen ist. Diese zweite Spule 17 ist der ersten Spule 16 entgegengeschaltet.In the embodiment shown in Fig. 2, in which the same parts are provided with the same reference numerals, the counter-switching element 4 is surrounded by a
Ersichtlich ist die erste Spule 16 von einem spiralig geschlitzten Hohlzylinder gebildet, der aus elektrisch leitendem Material besteht und mit dem Kolben 11 starr verbunden ist. Die Spule 17 ist von einem spiralig geschlitzten hohlzylindrischen Teil des beweglichen Schaltstückes 3 gebildet. Im Innern des hohlzylindrischen Teiles des beweglichen Schaltstückes 3 ist ein ferromagnetischer Körper 18 angeordnet, der zu einer Verstärkung des magnetischen Feldes beiträgt. Die Stirnflächen 19, 20 der Spulen 16, 17 tragen Abbrandelektroden 21, die eine hohe Verschleißfestigkeit unter Lichtbogenbeanspruchung gewährleisten.As can be seen, the
Die erfindungsgemäße Ausführungsform des Druckgasschalters ist besonders für hohe Unterbrechungsspannungen und bei kleinen Antriebskräften geeignet. Sie vereinigt die Vorteile der Druckgasschalter mit stromabhängiger und stromunabhängiger Löschgasströmung.The embodiment of the compressed gas switch according to the invention is particularly suitable for high interruption voltages and with low driving forces. You ver combines the advantages of pressure gas switches with current-dependent and current-independent extinguishing gas flow.
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2759267A DE2759267C3 (en) | 1977-12-30 | 1977-12-30 | Gas switch |
| DE2759267 | 1977-12-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0002685A1 true EP0002685A1 (en) | 1979-07-11 |
| EP0002685B1 EP0002685B1 (en) | 1980-08-06 |
Family
ID=6027943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP78101559A Expired EP0002685B1 (en) | 1977-12-30 | 1978-12-04 | Fluid-blast circuit breaker |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4225762A (en) |
| EP (1) | EP0002685B1 (en) |
| JP (1) | JPS5494672A (en) |
| DE (3) | DE2759267C3 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0041081A1 (en) * | 1980-06-02 | 1981-12-09 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Electric self blast switch |
| EP0045229B1 (en) * | 1980-07-17 | 1984-12-27 | Merlin Gerin | Switch with double rotating arc |
| FR2554631A1 (en) * | 1983-11-07 | 1985-05-10 | Merlin Gerin | ELECTRIC SWITCH WITH ROTATING ARC |
| EP0758136A3 (en) * | 1995-08-08 | 1998-05-13 | Mitsubishi Denki Kabushiki Kaisha | DC circuit breaking device |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5553829A (en) * | 1978-10-17 | 1980-04-19 | Mitsubishi Electric Corp | Gas switch |
| US4359616A (en) * | 1978-09-04 | 1982-11-16 | Mitsubishi Denki Kabushiki Kaisha | Self-extinguishing switch |
| FR2480028A1 (en) | 1980-04-04 | 1981-10-09 | Merlin Gerin | SWITCH WITH A ROTATING ARC BY ACTION OF A PERMANENT MAGNET |
| US4327263A (en) * | 1980-06-17 | 1982-04-27 | Mitsubishi Denke Kabushiki Kaisha | Switching device |
| CH654950A5 (en) * | 1980-07-18 | 1986-03-14 | Bbc Brown Boveri & Cie | HIGH VOLTAGE CIRCUIT BREAKERS. |
| DE3435967A1 (en) * | 1984-08-22 | 1986-03-06 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | EXHAUST GAS SWITCH |
| FR2622737B1 (en) * | 1987-11-04 | 1995-04-14 | Merlin Gerin | SELF-EXPANSIONAL ELECTRIC CIRCUIT BREAKER WITH VARIABLE EXTINCTION CHAMBER VOLUME |
| FR2662540B1 (en) * | 1990-05-23 | 1992-07-31 | Alsthom Gec | MEDIUM VOLTAGE CIRCUIT BREAKER. |
| FR2985081B1 (en) * | 2011-12-21 | 2015-03-06 | Alstom Technology Ltd | DEVICE FOR PROTECTION AGAINST PARTICLES GENERATED BY AN ELECTRIC SWITCHING ARC |
| DE102013205945A1 (en) * | 2013-04-04 | 2014-10-09 | Siemens Aktiengesellschaft | Disconnecting switch device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2349246A1 (en) | 1973-10-01 | 1975-04-03 | Bbc Brown Boveri & Cie | ELECTRIC SWITCH |
| DE2423103A1 (en) | 1974-05-13 | 1975-11-27 | Bbc Brown Boveri & Cie | ELECTRIC SWITCH |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE437053A (en) * | 1938-11-17 | |||
| US3014107A (en) * | 1959-01-02 | 1961-12-19 | Gen Electric | Vacuum switch |
| DE2349263C2 (en) * | 1973-10-01 | 1982-08-26 | Brown, Boveri & Cie Ag, 6800 Mannheim | Electric pressure gas switch |
-
1977
- 1977-12-30 DE DE2759267A patent/DE2759267C3/en not_active Expired
- 1977-12-30 DE DE7740357U patent/DE7740357U1/en not_active Expired
-
1978
- 1978-12-04 EP EP78101559A patent/EP0002685B1/en not_active Expired
- 1978-12-04 DE DE7878101559T patent/DE2860124D1/en not_active Expired
- 1978-12-12 JP JP15459378A patent/JPS5494672A/en active Pending
- 1978-12-18 US US05/970,214 patent/US4225762A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2349246A1 (en) | 1973-10-01 | 1975-04-03 | Bbc Brown Boveri & Cie | ELECTRIC SWITCH |
| DE2423103A1 (en) | 1974-05-13 | 1975-11-27 | Bbc Brown Boveri & Cie | ELECTRIC SWITCH |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0041081A1 (en) * | 1980-06-02 | 1981-12-09 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Electric self blast switch |
| EP0045229B1 (en) * | 1980-07-17 | 1984-12-27 | Merlin Gerin | Switch with double rotating arc |
| FR2554631A1 (en) * | 1983-11-07 | 1985-05-10 | Merlin Gerin | ELECTRIC SWITCH WITH ROTATING ARC |
| EP0146424A1 (en) * | 1983-11-07 | 1985-06-26 | Merlin Gerin | Electrical switch with rotating arc |
| EP0758136A3 (en) * | 1995-08-08 | 1998-05-13 | Mitsubishi Denki Kabushiki Kaisha | DC circuit breaking device |
| US5837953A (en) * | 1995-08-08 | 1998-11-17 | Mitsubishi Denki Kabushiki Kaisha | DC circuit breaking device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE7740357U1 (en) | 1980-11-13 |
| DE2759267B2 (en) | 1980-01-10 |
| DE2860124D1 (en) | 1980-11-27 |
| JPS5494672A (en) | 1979-07-26 |
| DE2759267A1 (en) | 1979-07-05 |
| DE2759267C3 (en) | 1980-09-11 |
| US4225762A (en) | 1980-09-30 |
| EP0002685B1 (en) | 1980-08-06 |
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