EP1022758A2 - Vakuumschaltröhre - Google Patents
Vakuumschaltröhre Download PDFInfo
- Publication number
- EP1022758A2 EP1022758A2 EP00100945A EP00100945A EP1022758A2 EP 1022758 A2 EP1022758 A2 EP 1022758A2 EP 00100945 A EP00100945 A EP 00100945A EP 00100945 A EP00100945 A EP 00100945A EP 1022758 A2 EP1022758 A2 EP 1022758A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- vacuum interrupter
- contact
- contact carrier
- heat
- collar
- 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.)
- Withdrawn
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/62—Heating or cooling of contacts
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/6606—Terminal arrangements
-
- 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
- H01H9/52—Cooling of switch parts
- H01H2009/523—Cooling of switch parts by using heat pipes
-
- 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
- H01H9/52—Cooling of switch parts
- H01H2009/526—Cooling of switch parts of the high voltage switches
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/6606—Terminal arrangements
- H01H2033/6613—Cooling arrangements directly associated with the terminal arrangements
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
-
- 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
- H01H9/52—Cooling of switch parts
Definitions
- the invention relates to a vacuum interrupter with a in a vacuum interrupter arranged lifting ladder, comprising a contact carrier and a Contact piece, and a fixed conductor, comprising a contact carrier and a Contact piece and optionally a cylindrical spaced the contact pieces surrounding shield, the vacuum interrupter from two metallic cover parts connected by an insulator ring is in which one of the contact carriers is attached and from the vacuum interrupter is brought out.
- the contact carriers designed as round copper stamps or copper bolts, the Diameter always smaller or at most equal to the diameter of the contact pieces is, see for example DE 44 47 391 C1.
- the invention has for its object an improved and faster To allow heat dissipation of the heat from the surface of the contact pieces and the heat from the surface of the contact pieces as quickly as possible spread over as large a surface as possible from which they are discharged or from which it can be radiated into the open air.
- This task is achieved with a vacuum switch of the generic type solved that to improve the nominal current carrying capacity and dissipation of heat from the surface of the contact pieces the surface at least a contact carrier by forming an axial to from the vacuum interrupter led out end of the contact carrier extending bore, which is adjacent to atmospheric pressure is enlarged.
- the inventive enlargement of the surface of the contact carrier, the adjacent to atmospheric pressure, allows the heat from the contact pieces dissipate faster over the enlarged surface and then into the to emit free air. This faster dissipation of heat from the The switching capacity is improved on the surface of the contact piece.
- the heat dissipation from the contact surfaces can also by Use of a heat sink in the axial bore of the contact carrier improved become.
- heat radiation or conversion can take place via the heat sink of the energy dissipated in heat of vaporization.
- P refers a heat exchanger, for example, is used as a heat sink a heat pipe provided.
- the liquid works in such a heat pipe or gaseous cooling medium in a circuit and transports the heat, so that it can be discharged to the outside.
- Improved heat dissipation from the surface of the contacts allows higher performance of the vacuum interrupter and / or a smaller design of the same. Reduction of Space requirements are always an economic requirement for the switchgear version.
- Another embodiment of the enlargement of the surface according to the invention and improved heat dissipation from the area of the contact pieces in that at least one contact carrier the adjacent contact piece laterally flange-like with corresponding enlargement of its surface.
- This flange-like collar improves heat dissipation the contact piece and enables a direct large-scale introduction into the adjoining cover part of the vacuum interrupter, over its large area an optimal radiation of heat into the adjacent free air atmosphere - is possible.
- the height H1 preferably corresponds to approximately half the difference of the maximum outer diameter of the contact carrier in the region of the frustoconical Flange to the outer diameter of the contact piece.
- the frustoconical formation allows a good quick distribution of the the contact piece transferred to the fixed contact carrier heat, the short height of the collar the quick discharge into the adjacent cover part the vacuum interrupter.
- the contact carrier of the lift conductor is particularly large due to its size if it is made of a good heat-conducting material, such as copper, relative can absorb and dissipate a lot of heat
- this hole can be equipped with a heat exchanger, such as a heat sink, be equipped. In this way, larger amounts of heat be derived more quickly.
- the formation of the contact carrier with a flange-like side of the contact piece protruding frustoconical collar is preferred for the Fixed ladder provided.
- the way from the collar to the adjacent one Housing of the vacuum interrupter in the form of the cover part short and so that rapid heat dissipation is possible.
- the lifting conductor and the fixed conductor are arranged in this way in the vacuum interrupter are that their contact pieces with respect to the longitudinal extent (longitudinal direction) the vacuum interrupter in extreme asymmetry close to that Fixed conductor adjacent cover part are arranged. This way, a shortest possible route for heat transport by heat conduction from the Contact piece of the fixed contact to the housing of the vacuum interrupter allows and thus the structural strength of the cover part in this area improved.
- the heat department is also further developed by the vacuum interrupter improved according to the invention in that the contact carrier on his side facing away from the flange-like collar as a cylindrical shaft with a Outside diameter smaller than the collar, in particular the same or is formed smaller than the outer diameter of the contact piece.
- Prefers is an arrangement of the fixed contact carrier of the fixed conductor of a vacuum interrupter with a flange-like collar, which the contact piece laterally cantilevered, and a subsequent shaft.
- the heat dissipation will also improved in that according to the proposal of the innovation of the contact carrier of the fixed conductor with its flange-like collar on the metallic Cover part of the vacuum interrupter lies on the inside. Is preferred here the cover part is made of good heat-conducting copper.
- this shield surrounding the contact pieces spaced to manufacture from copper, this shield as close as possible to the contact pieces is brought up and at their base with the fixed contact carrier or the cover part receiving this is connected by soldering. On in this way the radiant heat collected by the screen can be applied immediately can be derived very quickly in the cover part. This allows the shield in addition to dissipating radiant heat from the contact pieces runs out, be used.
- the measures according to the invention of improved and faster heat dissipation of the contact surfaces of the contact pieces improve the Nominal current carrying capacity of the vacuum interrupter and the switching capacity of the same, because the heating of the contact surface can be reduced quickly.
- Fig. 1 shows the structure of a vacuum interrupter 1 with one of the metallic pot-like cover parts 5, 6 with an insulator ring arranged between them 7 trained housing, the switch room (vacuum interrupter) 100 surrounds.
- the conductors are coaxial with the longitudinal axis X of the vacuum interrupter 1 arranged, the fixed conductor 3 with the contact carrier 30 made of copper attached contact piece 31 and the contact carrier 30 through an opening the cover part 5 for connection to the power line from the vacuum interrupter is brought out.
- the movable ladder or lifting ladder 2 comprises the contact carrier 20 made of copper with the contact piece 21, the Contact carrier 20 with its long shaft through an opening of the second Cover part 6 is brought out and the movement of the lifting conductor 2 by means a bellows 9 which is arranged within the vacuum interrupter, and which is soldered on the inside of the cover part 6 in the area 15 and is firmly connected at its other end in the area 13 to the lifting ladder 2, for example by soldering.
- the stroke movement of the stroke guide 2 is through Arrow P indicated.
- the stroke conductor is guided through the guide bushing 91.
- the cover part 6 is like the cover part 5 with the insulator 7 via solder connections 14, 11 connected, the cover part 5 is also connected to the fixed conductor 3 connected via a solder joint 10, which causes the tightness of the vacuum interrupter 100 (control room) is guaranteed.
- the contact surface heats up and it must be guaranteed be that this contact surface when the rated current in the Continuous operation not overheated. So it is sufficient for one and sufficiently rapid heat dissipation from the contact surface to wear.
- the heat can only be obtained by conduction via the contact carrier 20 or 30 and to a small extent by heat radiation directly from the Contact surface are dissipated.
- To enlarge the surface for the Heat dissipation is the contact carrier 20 of the lifting conductor 2 with one of its axial outgoing end leading out of the vacuum interrupter Provide bore 201 that comes close to the contact pieces. On in this way the surface of the contact carrier 20 over which the in the contact carrier heat can be dissipated, significantly increased.
- FIG. 3 it is proposed, as in FIG. 3 can be seen and shown schematically, in this bore 201 an additional Use heat sink 23 which is led out of the bore.
- a heat sink For example, a heat pipe known per se comes into question which, for example, converts the dissipated heat energy into heat of vaporization is made. 5 is the principle of operation of such a known heat pipe is shown schematically, see book “Effects of Physics and their Application" by M. v. Ardenne, Harry Deutsch Verlag, p. 760.
- the heat pipe 23 has a heating zone, a transport zone and a cooling zone and includes inside adjacent to the Tube housing on a capillary layer, such that in the area of the heating zone Heat is introduced into the inside of the pipe and the circulating inside Medium warmed up and this due to the warming in the central area of the heat pipe is heated, for example in the form of steam and is cooled and condensed again in the area of the cooling zone and then runs back into the heating zone in the liquid phase, the heat in the cooling zone is discharged to the outside again. Variants of such Different versions of the heat pipe are possible.
- the fixed contact 3 can also have such a central axial bore 303 be provided for the surface enlargement and thus faster Heat dissipation leads.
- the central bore 303 of the fixed conductor 3 is designed as a screw thread and is used for screwing the power connection.
- the improved and faster heat dissipation from the contact surface 31 of the fixed conductor 3 is achieved according to the invention in that that the contact carrier 30 in the adjacent to the contact piece 31 Area is widened so that it projects laterally with a collar 301, this collar also runs frusto-conical, as well Fig. 2 can be seen. Now there is a much improved and faster heat dissipation from the contact piece 31 into the adjacent contact carrier 30 of the fixed conductor 3.
- the arrangement is such that the fixed conductor has a shaft 302, the outer diameter A3 of which in turn significantly smaller than the maximum outer diameter A1 of the above frustum-like collar 301.
- the fixed contact 3 with the flange-like collar 301 both over the shaft 302 of the contact carrier and over the Contact piece 31 protrudes laterally, on the metallic cover part 5 of the housing rests on the inside. In this way there is one in this support area given a large surface for heat dissipation to the outside. That's the area designated by 10 according to FIGS. 1 and 2.
- the dimensions of the contact carrier and the contact piece depend on the performance of the vacuum interrupter and their construction.
- the conical Waste can have an angle ⁇ in the range of approximately 25 to 40 °.
- a further improvement in heat dissipation is experienced by the invention designed vacuum interrupter according to FIG. 1 in that the contact pieces 21, 31 in extreme asymmetry with respect to the longitudinal extension of the Vacuum interrupter 1 are arranged within which, if possible near the attachment point and the passage of the fixed conductor 3 on the cover part 5.
- the length H2 is the vacuum interrupter 1 in relation to the contact point of the contact pieces 21, 31, which of the same reference point of the cover side 5, in which the fixed conductor 3 is arranged, which is designated H3, is set.
- the asymmetry is characterized by a ratio of H3 to H2 in the range of 1 to 5 to 1 to 7. This short way of heat dissipation in the area of the fixed conductor for the contact surfaces 21, 31 also increases the nominal current carrying capacity the vacuum interrupter and also improves the structural strength cover 5.
- the heat dissipation by heat radiation from the contact surface of the contact pieces 21, 31 can furthermore be arranged by the arrangement of a shield 4 in the form of a cylindrical pipe section made of copper, with as much as possible close proximity to the contact pieces 21, 31 in the vacuum interrupter 100 is arranged can be achieved.
- the cylindrical shield, see 1 is immediately adjacent to the collar 301 of the fixed contact carrier 30 attached to the lid part 5, also by soldering, so that the shield 4 recorded heat radiation also in the lid 5 and so that can be derived to the outside.
- FIG. 4 schematically shows the measures with which in the case of a vacuum interrupter 1 with a lifting conductor 2 and a fixed conductor 3 according to Fig. 1 additional heat dissipation is made possible.
- An essential one improved heat dissipation is in the area of the fixed contact 3 by the Formation of the fixed contact with a substantially T-shaped cross section reached over the contact piece projecting flange, which at the same time on the Cover part rests and allows improved heat dissipation to the outside.
- heat is also radiated through the shielding and drained the metallic lid to the outside.
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Thermally Actuated Switches (AREA)
Abstract
Description
- Fig. 1:
- den Querschnitt durch eine Vakuumschaltröhre mit Hubleiter und Festleiter
- Fig. 2:
- auszugsweise den Querschnitt eines Festkontaktes mit angrenzenden Bauteilen der Vakuumschaltröhre
- Fig. 3:
- einen Hubleiter im Querschnitt
- Fig. 4:
- die Vakuumschaltröhre gemäß Fig. 1 im Querschnitt mit Angaben zum Wärmefluß
- Fig. 5:
- schematische Darstellung eines Wärmerohres.
Claims (12)
- Vakuumschaltröhre mit einem in einer Vakuumschaltkammer angeordneten Hubleiter, umfassend einen Kontaktträger und ein Kontaktstück, sowie einen Festleiter, umfassend einen Kontaktträger und ein Kontaktstück und eine gegebenenfalls zylinderförmige die Kontaktstücke beabstandet umgebende Abschirmung, wobei die Vakuumschaltkammer von zwei über einen Isolatorring verbundenen metallischen Deckelteilen gebildet ist, in denen jeweils einer der Kontaktträger befestigt und aus der Vakuumschaltkammer herausgeführt ist, dadurch gekennzeichnet, daß zur Verbesserung der Nennstromtragfähigkeit und Ableitung von Wärme von der Oberfläche der Kontaktstücke die Oberfläche mindestens eines Kontaktträgers durch Ausbildung einer axialen zum aus der Vakuumschaltkammer herausgeführten Ende des Kontaktträgers verlaufenden Bohrung, die an Atmosphärendruck angrenzt, vergrößert ist.
- Vakuumschaltröhre nach Anspruch 1, dadurch gekennzeichnet, daß zur Ableitung der Wärme ein Kühlkörper in die axiale Bohrung des Kontaktträgers eingesetzt ist.
- Vakuumschaltröhre nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß als Kühlkörper ein Wärmerohr vorgesehen ist.
- Vakuumschaltröhre nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß mindestens ein Kontaktträger das angrenzende Kontaktstück seitlich flanschartig mit entsprechender Vergrößerung seiner Oberfläche überkragt.
- Vakuumschaltröhre nach Anspruch 4, dadurch gekennzeichnet, daß der flanschartige Kragen als flacher Kegelstumpf mit einer kurzen Höhe (H1) und möglichst großer Differenz der Außendurchmesser (A2) des Kontaktstückes zu dem maximalen Außendurchmesser (A1) des Kragens des Kontaktträgers ausgebildet ist.
- Vakuumschaltröhre nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Kontaktträger (20) des Hubleiters (2) mit einer axialen aus der Vakuumschaltkammer herausführenden Bohrung (201) ausgebildet ist.
- Vakuumschaltröhre nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Kontaktträger (30) des Festleiters (3) einen flanschartigen seitlich das Kontaktstück (31) überkragenden kegelstumpfförmigen Kragen (301) aufweist.
- Vakuumschaltröhre nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Hubleiter und der Festleiter derartig in der Vakuumschaltkammer angeordnet sind, daß ihre Kontaktstücke (21, 31) in bezug auf die Längsachse (X) der Vakuumschaltkammer in extremer Asymmetrie nahe dem dem Festleiter (3) benachbarten Deckelteil (5) angeordnet sind.
- Vakuumschaltröhre nach Anspruch 5, dadurch gekennzeichnet, daß die Höhe (H1) des flanschartigen Kragens (301) etwa der Hälfte der Differenz des Außendurchmessers (A1) des Kragens minus Außendurchmesser (A2) des Kontaktstückes beträgt.
- Vakuumschaltröhre nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß zur Ableitung von Strahlungswärme der Kontaktstücke eine Abschirmung aus Kupfer die Kontaktstücke umgibt, wobei die Abschirmung an ihrem Fußpunkt mit dem Festkontaktträger (30) bzw. diesen aufnehmenden Deckelteil (5) durch Lötung verbunden ist.
- Vakuumschaltröhre nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß der Kontaktträger an seiner dem flanschartigen Kragen abgewandten Seite als zylindrischer Schaft mit einem Außendurchmesser kleiner als der Kragen, insbesondere gleich oder kleiner als der Außendurchmesser des Kontaktstückes ausgebildet ist.
- Vakuumschaltröhre nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß der Kontaktträger des Festleiters (3) mit seinem flanschartigen Kragen (301) auf dem metallischen Deckelteil (5) der Vakuumschaltröhre innenseitig aufliegt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999102498 DE19902498C2 (de) | 1999-01-22 | 1999-01-22 | Vakuumschaltröhre |
DE19902498 | 1999-01-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1022758A2 true EP1022758A2 (de) | 2000-07-26 |
EP1022758A3 EP1022758A3 (de) | 2001-05-02 |
Family
ID=7895090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00100945A Withdrawn EP1022758A3 (de) | 1999-01-22 | 2000-01-19 | Vakuumschaltröhre |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1022758A3 (de) |
DE (1) | DE19902498C2 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1672655A1 (de) * | 2004-12-20 | 2006-06-21 | Abb Research Ltd. | Vakuumschalter mit grosser Stromtragfähigkeit |
WO2006092380A1 (de) * | 2005-03-03 | 2006-09-08 | Siemens Aktiengesellschaft | Schaltgerät mit wärmerohr |
CN101320651B (zh) * | 2008-07-11 | 2011-08-24 | 中国科学院电工研究所 | 一种热管式真空开关 |
WO2013048602A1 (en) * | 2011-09-27 | 2013-04-04 | Eaton Corporation | Vacuum switching apparatus including first and second movable contact assemblies, and vacuum electrical switching apparatus including the same |
WO2013186201A1 (de) * | 2012-06-11 | 2013-12-19 | Eaton Electrical Ip Gmbh & Co. Kg | Schaltgerät für gleichstrom |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013114260A1 (de) * | 2013-12-17 | 2015-06-18 | Eaton Electrical Ip Gmbh & Co. Kg | Doppelkontakt-Schalter mit Vakuumschaltkammern |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1062843B (de) * | 1955-08-11 | 1959-08-06 | Richard Schier O H G | Elektrischer, metallischer Kontakt mit Kuehlung |
GB1125734A (en) * | 1966-08-23 | 1968-08-28 | Ass Elect Ind | Improvements in or relating to switching devices |
US4005297A (en) * | 1972-10-18 | 1977-01-25 | Westinghouse Electric Corporation | Vacuum-type circuit interrupters having heat-dissipating devices associated with the contact structures thereof |
DE29901094U1 (de) * | 1999-01-22 | 1999-04-08 | Klöckner-Moeller GmbH, 53115 Bonn | Vakuumschaltröhre |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3941388A1 (de) * | 1989-12-15 | 1991-06-20 | Sachsenwerk Ag | Elektrischer schalter |
EP0718860A3 (de) * | 1994-12-22 | 1997-10-22 | Hitachi Ltd | Vakuumschalter |
DE4447391C1 (de) * | 1994-12-23 | 1996-06-05 | Siemens Ag | Vakuumschalter |
DE19625128A1 (de) * | 1996-06-12 | 1997-12-18 | Fachhochschule Fuer Technik Un | Vakuumschaltkammer |
-
1999
- 1999-01-22 DE DE1999102498 patent/DE19902498C2/de not_active Expired - Fee Related
-
2000
- 2000-01-19 EP EP00100945A patent/EP1022758A3/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1062843B (de) * | 1955-08-11 | 1959-08-06 | Richard Schier O H G | Elektrischer, metallischer Kontakt mit Kuehlung |
GB1125734A (en) * | 1966-08-23 | 1968-08-28 | Ass Elect Ind | Improvements in or relating to switching devices |
US4005297A (en) * | 1972-10-18 | 1977-01-25 | Westinghouse Electric Corporation | Vacuum-type circuit interrupters having heat-dissipating devices associated with the contact structures thereof |
DE29901094U1 (de) * | 1999-01-22 | 1999-04-08 | Klöckner-Moeller GmbH, 53115 Bonn | Vakuumschaltröhre |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1672655A1 (de) * | 2004-12-20 | 2006-06-21 | Abb Research Ltd. | Vakuumschalter mit grosser Stromtragfähigkeit |
US7471495B2 (en) | 2004-12-20 | 2008-12-30 | Abb Research Ltd | Vacuum circuit breaker having a high current-carrying capacity |
WO2006092380A1 (de) * | 2005-03-03 | 2006-09-08 | Siemens Aktiengesellschaft | Schaltgerät mit wärmerohr |
CN101320651B (zh) * | 2008-07-11 | 2011-08-24 | 中国科学院电工研究所 | 一种热管式真空开关 |
WO2013048602A1 (en) * | 2011-09-27 | 2013-04-04 | Eaton Corporation | Vacuum switching apparatus including first and second movable contact assemblies, and vacuum electrical switching apparatus including the same |
US8575509B2 (en) | 2011-09-27 | 2013-11-05 | Eaton Corporation | Vacuum switching apparatus including first and second movable contact assemblies, and vacuum electrical switching apparatus including the same |
WO2013186201A1 (de) * | 2012-06-11 | 2013-12-19 | Eaton Electrical Ip Gmbh & Co. Kg | Schaltgerät für gleichstrom |
Also Published As
Publication number | Publication date |
---|---|
DE19902498C2 (de) | 2001-05-17 |
DE19902498A1 (de) | 2000-09-07 |
EP1022758A3 (de) | 2001-05-02 |
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Legal Events
Date | Code | Title | Description |
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