EP0062186A1 - Disposition of contacts for a vacuum switch - Google Patents

Disposition of contacts for a vacuum switch Download PDF

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Publication number
EP0062186A1
EP0062186A1 EP82102093A EP82102093A EP0062186A1 EP 0062186 A1 EP0062186 A1 EP 0062186A1 EP 82102093 A EP82102093 A EP 82102093A EP 82102093 A EP82102093 A EP 82102093A EP 0062186 A1 EP0062186 A1 EP 0062186A1
Authority
EP
European Patent Office
Prior art keywords
contact
contacts
core
contact arrangement
arrangement according
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
Application number
EP82102093A
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German (de)
French (fr)
Other versions
EP0062186B1 (en
Inventor
Johann Dipl.-Ing. Wolf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT82102093T priority Critical patent/ATE14258T1/en
Publication of EP0062186A1 publication Critical patent/EP0062186A1/en
Application granted granted Critical
Publication of EP0062186B1 publication Critical patent/EP0062186B1/en
Expired legal-status Critical Current

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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
    • H01H33/60—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
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6646—Contacts; Arc-extinguishing means, e.g. arcing rings having non flat disc-like contact surface
    • 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
    • H01H33/185—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the 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
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6642—Contacts; Arc-extinguishing means, e.g. arcing rings having cup-shaped contacts, the cylindrical wall of which being provided with inclined slits to form a coil
    • 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
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6644—Contacts; Arc-extinguishing means, e.g. arcing rings having coil-like electrical connections between contact rod and the proper contact
    • H01H33/6645—Contacts; Arc-extinguishing means, e.g. arcing rings having coil-like electrical connections between contact rod and the proper contact in which the coil like electrical connections encircle at least once the contact rod

Definitions

  • the invention has for its object to provide the design of a contact arrangement with essentially cylindrical contacts whose arc current in the contact gap an axial magnetic field, i.e. parallel to the current direction, which is concentric between the contacts and which additionally causes a contact pressure increase when the contacts are closed.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Manipulator (AREA)
  • Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Air Bags (AREA)
  • Keying Circuit Devices (AREA)

Abstract

A configuration for a contact arrangement is disclosed for a switch having two coaxially positioned and generally cylindrical contacts. Each contact contains a coaxial core of ferromagnetic material, and a current-carrying envelope surrounding the core has the form of a helix. The helical envelope creates a current component which sets up a magnetic field in the widening contact gap when the contacts are separated that disperses arcing. Moreover, the field reinforces the closure pressure when the contacts are in their closed position. Ellipsoid shaping enables the field to be normal at all points of the contact-making surfaces.

Description

Die Erfindung bezieht sich auf eine Kontaktanordnung für Vakuumschalter mit zwei koaxial angeordneten und im wesentlichen zylindrischen Kontakten.The invention relates to a contact arrangement for vacuum switches with two coaxially arranged and essentially cylindrical contacts.

Es ist bekannt, ein Ansteigen der Lichtbogenspannung und den damit verbundenen hohen Leistungsumsatz in Vakuumschaltern durch ein koaxiales Magnetfeld im Luftspalt.. zwischen den geöffneten Kontakten zu verhindern. Zu diesem Zweck kann eine die Schaltkammer zylindrisch umschließende Spule vorgesehen sein, die mit den Schaltkontakten elektrisch in Reihe liegt und ein vom Strom abhängiges axiales Magnetfeld aufbaut, das den Spalt zwischen den Kontakten durchsetzt. Zur Erhöhung der Feldstärke im Kontaktspalt kann die Spule doppellagig aufgebaut sein und die Windungen schraubenförmig hin-und rückläufig aufgeführt sein. Die Herstellung solcher Vakuumschalter erfordert aber einen verhältnismäßig großen Aufwand (DE-OS 29 11 706).It is known to prevent an increase in the arc voltage and the associated high power conversion in vacuum switches by means of a coaxial magnetic field in the air gap between the open contacts. For this purpose, a coil enclosing the switching chamber can be provided, which is electrically in series with the switching contacts and which builds up an axial magnetic field which is dependent on the current and penetrates the gap between the contacts. In order to increase the field strength in the contact gap, the coil can be constructed in two layers and the turns can be made to go back and forth helically. The production of such vacuum switches, however, requires a relatively large effort (DE-OS 29 11 706).

Der Erfindung liegt die Aufgabe zugrunde, die Gestaltung einer Kontaktanordnung mit im wesentlichen zylindrischen Kontakten anzugeben deren Lichtbogenstrom im Kontaktspalt ein axiales Magnetfeld, d.h. parallel zur Stromrichtung, bildet, das zwischen den Kontakten konzentrisch ist und das zusätzlich in geschlossenem Zustand der Kontakte eine.Kontaktdruckverstärkung bewirkt.The invention has for its object to provide the design of a contact arrangement with essentially cylindrical contacts whose arc current in the contact gap an axial magnetic field, i.e. parallel to the current direction, which is concentric between the contacts and which additionally causes a contact pressure increase when the contacts are closed.

Es sind Kontaktanordnungen für Vakuumschalter mit - flachen Kontakten bekannt, deren Kontaktauflagefläche eine Kreisfläche bildet, die von einem Abbrandbereich konzentrisch umgeben ist. Zwischen der Kontaktauflagefläche und dem elektrischen Anschlußleiter des Kontaktes ist ein flacher Hohlraum vorgesehen, der mit einer ferromagnetischen Einlage versehen ist. Durch diese radial zum Lichtbogen scheibenförmig ausgedehnte Einlage soll eine radiale Stromkomponente gebildet werden, deren Kraftkomponente den Lichtbogen radial nach außen auf den Abbrandbereich der Kontakte treiben soll (DE-OS 25 46 375).Contact arrangements for vacuum switches with flat contacts are known, the contact contact surface of which forms a circular area which is concentrically surrounded by a burning area. A flat cavity, which is provided with a ferromagnetic insert, is provided between the contact contact surface and the electrical connecting conductor of the contact. A radial current component is to be formed by this insert, which extends radially to the arc in the form of a disk, the force component of which is intended to drive the arc radially outward onto the erosion area of the contacts (DE-OS 25 46 375).

Es sind ferner Vakuumschalter mit Topfkontakten bekannt, deren Boden mit einer Stromzuführung verbunden ist und deren Rand die ringförmige Kontaktauflagefläche bildet. Die Kontaktträger der beiden Kontakte umgeben einen Eisenkern, der einen..Teil der Stirnfläche bildet, und sind mit gegenläufig verlaufenden schrägen Schlitzen versehen. Dieser Gestaltung liegt die Aufgabe zugrunde, ein radiales.Magnetfeld, d.h. senkrecht zur Stromrichtung im Lichtbogen zu erzeugen, das den Lichtbogen zwischen den Kontakten rotieren läßt (DE-PS 1 196 751).Vacuum switches with pot contacts are also known, the bottom of which is connected to a power supply and the edge of which forms the annular contact contact surface. The contact carriers of the two contacts surround an iron core, which forms a part of the end face, and are provided with opposing oblique slots. This design is based on the task of creating a radial magnetic field, i.e. to generate perpendicular to the current direction in the arc, which allows the arc to rotate between the contacts (DE-PS 1 196 751).

Die erwähnte Aufgabe wird bei einer Kontaktanordnung der eingangs genannten Art nun erfindungsgemäß gelöst mit den kennzeichnenden Merkmalen des Anspruchs 1. Der Lichtbogenstrom erzeugt zwischen den Kontakten ein axiales Magnetfeld, dessen Feldstärke einen diffusen Lichtbogen erzeugt. Auf besonders vorteilhafte weitere Ausgestaltungen sind die Unteransprüche gerichtet.The above-mentioned object is now achieved according to the invention in a contact arrangement of the type mentioned at the beginning with the characterizing features of claim 1. The arc current generates an axial magnetic field between the contacts, the field strength of which generates a diffuse arc. The subclaims are directed to particularly advantageous further developments.

Durch die drehstabähnliche Maritelform des Kontaktes erhält man eine azimutale Komponente des Stromes und damit in gewisser Weise die Wirkung einer vom Kontakt relativ weit entfernten Spule mit axialem Magnetfeld. Um dieses Feld im Kontaktspalt zu konzentrieren, verwendet man den ferro- magnetischen Kern mit kleiner Koerzitivkraft, beispielsweise Eisen. Durch diese Eisenkerne in den beiden Kontaktzuführungen wird im Kontaktspalt ein Magnetfeld konzentriert, das von der Kontaktachse aus radial abnimmt. Bei zweckmäßiger Ausbildung der Kontaktauflagefläche, beispielsweise als Rotationsellipsoid, steht das Magnetfeld an allen Stellen der einander zugewandten Teile der Kontaktoberflächen senkrecht zu dieser Oberfläche. Unter praktischen Bedingungen muß die Oberfläche an die vom Eisenkern erzeugte Form des Magnetfeldes angeglichen werden. Damit hat man die Möglichkeit, die magnetische Feldstärke an die mittlere Stromdichte anzupassen. Eine Elipsoidform der Kontaktauflageflächen ermöglicht aufgrund des sich erweiternden Kontaktspaltes einen schnellen Abbau des Dampfdruckes vom Kontaktzentrum.The torsion bar-like Maritel shape of the contact gives an azimuthal component of the current and thus, to a certain extent, the effect of a coil with an axial magnetic field that is relatively distant from the contact. In order to concentrate this field in the contact gap, one uses the ferromagnetic core with a small coercive force, for example wise iron. These iron cores in the two contact leads concentrate a magnetic field in the contact gap, which decreases radially from the contact axis. If the contact contact surface is designed appropriately, for example as an ellipsoid of revolution, the magnetic field is perpendicular to this surface at all points of the parts of the contact surfaces facing one another. Under practical conditions, the surface must be adapted to the shape of the magnetic field generated by the iron core. This gives you the option of adapting the magnetic field strength to the average current density. Due to the widening contact gap, an ellipsoidal shape of the contact contact surfaces enables the vapor pressure to be quickly released from the contact center.

Zur weiteren Erläuterung der Erfindung wird auf die Zeichnung Bezug genommen, in deren Figuren 1 und 2-.ein Ausführungsbeispiel einer-Kontaktanordnung nach der Erfindung schematisch veranschaulicht ist. Die Figuren 3 bis 6 zeigen jeweils eine besondere Ausgestaltung der Kontaktanordnung.To further explain the invention, reference is made to the drawing, in which FIGS. 1 and 2 schematically illustrate an embodiment of a contact arrangement according to the invention. Figures 3 to 6 each show a special embodiment of the contact arrangement.

Nach Figur 1 ist ein im wesentlichen zylindrischer Kontakt 2 mit einer Stromzuführung 4 verbunden. Der Mantel 6 des Kontaktes 2 ist mit schraubenförmigen Schlitzen 8 versehen, die dem Mantel 6 eine drehstabähnliche Gestaltung verleihen und vor der geschlossenen Stirnfläche des Kontaktes 2 enden. Die Stirnfläche des Kontaktes 2 ist mit einer Kontaktauflage- 10 versehen, die aus sogenanntem Kontaktmaterial, beispielsweise Chrom-Kupfer, besteht.According to FIG. 1, an essentially cylindrical contact 2 is connected to a power supply 4. The jacket 6 of the contact 2 is provided with helical slots 8, which give the jacket 6 a torsion bar-like design and end in front of the closed end face of the contact 2. The end face of the contact 2 is provided with a contact pad 10, which consists of so-called contact material, for example chrome-copper.

Dem Kontakt 2 koaxial gegenüber ist ein in.gleicher Weise gestalteter Kontakt 3 angeordnet, der in Figur 2 dargestellt ist, die einen Querschnitt durch den Kontakt darstellt. Die Kontakte 2 und 3 sind jeweils mit einer ferromagnetischen Einlage 12 bzw. 13 versehen. Diese sich in Achsrichtung der Kontakte 2 und 3 erstreckenden Einlagen 12 und 13 bestehen aus weichmagnetischem Material, beispielsweise Eisen, und bilden im Kontaktspalt zwischen den Kontaktauflagen 10 und 11 ein im wesentlichen axial verlaufendes Feld, das in der Achse 16 der Kontakte 2 und 3 konzentriert ist und von dort radial nach außen abnimmt. Durch diese Feldkonzentration entsteht nach dem Öffnen der Kontakte 2 und 3 im Kontaktspalt ein diffuser Lichtbogen, der den Leistungsumsatz begrenzt. Ferner ergibt sich durch diese Feldkonzentration bei geschlossenen Kontakten eine entsprechend erhöhte Andruckkraft.A contact 3, which is configured in the same way, is arranged coaxially opposite the contact 2 is shown, which represents a cross section through the contact. The contacts 2 and 3 are each provided with a ferromagnetic insert 12 and 13, respectively. These inserts 12 and 13, which extend in the axial direction of the contacts 2 and 3, consist of soft magnetic material, for example iron, and form an essentially axially extending field in the contact gap between the contact supports 10 and 11, which concentrates in the axis 16 of the contacts 2 and 3 and decreases radially outwards from there. This field concentration creates a diffuse arc in the contact gap after opening contacts 2 and 3, which limits the power conversion. Furthermore, this field concentration results in a correspondingly increased pressing force when the contacts are closed.

In der Ausführungsform nach Figur 3 wird die Schraubenform der Teile des Mantels 6 durch Schlitze 8 hergestellt, die in den Kontaktmantel 6 eingefräst sind und deren Tiefe geringer ist als die Manteldicke und die somit nicht bis zum Kern 12 reichen. Damit kann die Schraubenform der Teile des Mantels 6 bis zur Kontaktauflage 10 bzw. 11 im Vakuum fortgesetzt werden.In the embodiment according to FIG. 3, the screw shape of the parts of the jacket 6 is produced by slots 8 which are milled into the contact jacket 6 and whose depth is less than the jacket thickness and which therefore do not extend to the core 12. The screw shape of the parts of the jacket 6 can thus be continued in a vacuum up to the contact support 10 or 11.

In der Ausführungsform nach Figur 4 besteht der Mantel des Kontaktes aus Stäben 18, die verdrillt sind und konzentrisch zum Kern 12 angeordnet sind. Diese verdrillten Stäbe 18 können vorzugsweise durch in der Figur nicht dargestellte Zwischenlagen oder Umhüllungen elektrisch gegeneinander isoliert sein.In the embodiment according to FIG. 4, the jacket of the contact consists of rods 18, which are twisted and arranged concentrically to the core 12. These twisted rods 18 can preferably be electrically insulated from one another by intermediate layers or coverings, not shown in the figure.

In der Ausführungsform nach Figur 5 ist der Mantel 6 mit schraubenförmigen Einlagen 22 aus elektrisch schlechter leitendem Material versehen, das beispielsweise aus Kontaktmaterial bestehen kann. Die Tiefe dieser Einlagen kann vorzugsweise geringer gewählt werden als die Dicke des Mantels 6, so daß diese Einlagen 22 in radialer Richtung schon vor dem Kern 12 enden.In the embodiment according to FIG. 5, the jacket 6 is provided with helical inserts 22 made of electrically poorly conductive material, which may consist, for example, of contact material. The depth these inserts can preferably be selected to be smaller than the thickness of the jacket 6, so that these inserts 22 end in the radial direction before the core 12.

In der Ausführungsform nach Figur 6 besteht der Kern aus einem vorzugsweise in Achsrichtung langgestreckten Profilkörper 24, der mit Rippen oder Lamellen 26 versehen ist, die in Achsrichtung des Kontaktes 2 eine Schraubenlinie bilden und dadurch einen im wesentlichen schraubenförmigen Stromverlauf bewirken.In the embodiment according to FIG. 6, the core consists of a profile body 24, preferably elongated in the axial direction, which is provided with ribs or lamellae 26, which form a helical line in the axial direction of the contact 2 and thereby cause an essentially helical current profile.

Claims (6)

1. Kontaktanordnung für Vakuumschalter mit zwei koaxial angeordneten und im wesentlichen zylindrischen Kontakten, deren geschlossene Stirnfläche mit einer Kontaktauflage (10, 11) versehen ist, dadurch gekennzeichnet, daß wenigstens einer der Kontakte (2 oder 3) einen koaxialen Kern (12 bzw. 13) aus ferromagnetischem Material enthält und daß wenigstens ein Teil der den .Kern (12 bzw. 13) umgebenden stromführenden Mantelteile (6) des Kontaktes (2 bzw. 3) eine Schraubenlinie bildet.1. Contact arrangement for vacuum switch with two coaxially arranged and substantially cylindrical contacts, the closed end face of which is provided with a contact support (10, 11), characterized in that at least one of the contacts (2 or 3) has a coaxial core (12 or 13 ) made of ferromagnetic material and that at least part of the current-carrying jacket parts (6) of the contact (2 or 3) surrounding the core (12 or 13) forms a helix. 2. Kontaktanordnung nach Anspruch 1, dadurch gekennzeichnet, daß auch der zweite Kontakt (2 bzw. 3) in gleicher Weise gestaltet ist und die Schraubenlinie in beiden Kontakten (2, 3) den gleichen Drehsinn hat.2. Contact arrangement according to claim 1, characterized in that the second contact (2 or 3) is designed in the same way and the helical line in both contacts (2, 3) has the same direction of rotation. 3. Kontaktanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Schraubenlinie der Mantelteile (6) durch Schlitze (8) hergestellt sind, deren Tiefe geringer ist als die radiale Dicke der Mantelteile (6) (Figur 3).3. Contact arrangement according to claim 1 or 2, characterized in that the helical line of the jacket parts (6) are made by slots (8), the depth of which is less than the radial thickness of the jacket parts (6) (Figure 3). 4. Kontaktanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Mantelteile aus Stäben (18) bestehen, die schraubenförmig verdrillt sind (Figur 4).4. Contact arrangement according to claim 1 or 2, characterized in that the jacket parts consist of rods (18) which are helically twisted (Figure 4). 5. Kontaktanordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Mantel (6) mit schraubenförmigen, elektrisch schlecht leitenden Einlagen (22) versehen ist (Figur 5). -5. Contact arrangement according to one of claims 1 to 3, characterized in that the jacket (6) with helical, electrically poorly conductive inserts (22) is provided (Figure 5). - 6. Kontaktanordnung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet , daß der Kern (24) aus einem Profilkörper mit Rippen (26) oder Lamellen besteht, die in Achsrichtung des Kontaktes (2) eine Schraubenlinie bilden (Figur 6).6. Contact arrangement according to one of claims 1 to 5, characterized in that the core (24) consists of a profile body with ribs (26) or fins which form a helix in the axial direction of the contact (2) (Figure 6).
EP82102093A 1981-03-26 1982-03-15 Disposition of contacts for a vacuum switch Expired EP0062186B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82102093T ATE14258T1 (en) 1981-03-26 1982-03-15 CONTACT ARRANGEMENT FOR VACUUM SWITCH.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3112009 1981-03-26
DE19813112009 DE3112009A1 (en) 1981-03-26 1981-03-26 "CONTACT ARRANGEMENT FOR VACUUM SWITCHES"

Publications (2)

Publication Number Publication Date
EP0062186A1 true EP0062186A1 (en) 1982-10-13
EP0062186B1 EP0062186B1 (en) 1985-07-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102093A Expired EP0062186B1 (en) 1981-03-26 1982-03-15 Disposition of contacts for a vacuum switch

Country Status (9)

Country Link
US (1) US4459446A (en)
EP (1) EP0062186B1 (en)
JP (1) JPS57172622A (en)
AT (1) ATE14258T1 (en)
DE (2) DE3112009A1 (en)
DK (1) DK138482A (en)
FI (1) FI820738L (en)
IN (1) IN158122B (en)
NO (1) NO820976L (en)

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GB2140972A (en) * 1983-03-31 1984-12-05 Mc Graw Edison Co Vacuum switch contacts
EP0175181A2 (en) * 1984-09-10 1986-03-26 Siemens Aktiengesellschaft Contact arrangement for vacuum switch
GB2174843A (en) * 1985-04-24 1986-11-12 Vacuum Interrupters High current switch contacts
GB2209094A (en) * 1987-08-26 1989-04-26 Sachsenwerk Licht & Kraft Ag Contact means for a vacuum switch
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DE3917988A1 (en) * 1989-06-02 1990-12-13 Licentia Gmbh PROTECTION FOR COMPONENTS OF GAS-INSULATED SWITCHGEAR WITH INTERNAL ARC FAULTS AGAINST BURNING
DE3920784C2 (en) * 1989-06-24 1994-08-18 Asea Brown Boveri Contact arrangement for a vacuum switch
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US5691522A (en) * 1995-06-07 1997-11-25 Eaton Corporation Vacuum interrupter with a single internal assembly for generating an axial magnetic field
DE19714653A1 (en) * 1997-04-09 1998-10-15 Abb Patent Gmbh Contact structure for vacuum switching chamber
JP5095591B2 (en) * 2008-11-27 2012-12-12 株式会社東芝 Vacuum valve
FR2946792A1 (en) * 2009-06-10 2010-12-17 Areva T & D Sa WINDING FOR CONTACT WITH IMPROVED ENDURANCE MEDIUM VOLTAGE VACUUM BULB, VACUUM BULB AND CIRCUIT BREAKER, SUCH AS AN ASSOCIATED ALTERNATOR DISCONNECT CIRCUIT BREAKER.
CN101916686A (en) * 2010-08-10 2010-12-15 北京合纵科技股份有限公司 Magnetic quenching-based SF6 load switch and installation method
US8710389B2 (en) * 2011-11-15 2014-04-29 Eaton Corporation Vacuum switch and electrode assembly therefor
DE102012221844A1 (en) * 2012-11-29 2014-06-05 Siemens Aktiengesellschaft Switching contact for vacuum switching tube used for power interruption in power distribution network, generates axial magnetic field in contact gap arranged between oppositely arranged contact pieces
US9640353B2 (en) 2014-10-21 2017-05-02 Thomas & Betts International Llc Axial magnetic field coil for vacuum interrupter
CN108320997B (en) * 2018-03-23 2019-01-08 西安交通大学 Multipolar system transverse direction magnet structure direct current cut-offs vacuum interrupter and application

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102317A2 (en) * 1982-08-31 1984-03-07 Siemens Aktiengesellschaft Vacuum switch with helical electrical conductors
EP0102317A3 (en) * 1982-08-31 1986-10-15 Siemens Aktiengesellschaft Vacuum switch with helical electrical conductors
GB2140972A (en) * 1983-03-31 1984-12-05 Mc Graw Edison Co Vacuum switch contacts
EP0175181A2 (en) * 1984-09-10 1986-03-26 Siemens Aktiengesellschaft Contact arrangement for vacuum switch
EP0175181A3 (en) * 1984-09-10 1988-08-17 Siemens Aktiengesellschaft Contact arrangement for vacuum switch
GB2174843A (en) * 1985-04-24 1986-11-12 Vacuum Interrupters High current switch contacts
GB2209094A (en) * 1987-08-26 1989-04-26 Sachsenwerk Licht & Kraft Ag Contact means for a vacuum switch
EP0349303A2 (en) * 1988-06-29 1990-01-03 Cooper Industries, Inc. Vacuum interrupter
EP0349303A3 (en) * 1988-06-29 1990-11-07 Cooper Industries, Inc. Vacuum interrupter

Also Published As

Publication number Publication date
DE3264618D1 (en) 1985-08-14
FI820738L (en) 1982-09-27
DK138482A (en) 1982-09-27
JPS57172622A (en) 1982-10-23
NO820976L (en) 1982-09-27
EP0062186B1 (en) 1985-07-10
IN158122B (en) 1986-09-13
ATE14258T1 (en) 1985-07-15
US4459446A (en) 1984-07-10
DE3112009A1 (en) 1982-10-07

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