EP0143735A1 - Dispositif de contact pour interrupteurs sous vide - Google Patents

Dispositif de contact pour interrupteurs sous vide Download PDF

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Publication number
EP0143735A1
EP0143735A1 EP84730087A EP84730087A EP0143735A1 EP 0143735 A1 EP0143735 A1 EP 0143735A1 EP 84730087 A EP84730087 A EP 84730087A EP 84730087 A EP84730087 A EP 84730087A EP 0143735 A1 EP0143735 A1 EP 0143735A1
Authority
EP
European Patent Office
Prior art keywords
contact
jacket
arrangement according
contact arrangement
webs
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
EP84730087A
Other languages
German (de)
English (en)
Other versions
EP0143735B1 (fr
Inventor
Karl Dr. rer. nat. Zückler
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of EP0143735A1 publication Critical patent/EP0143735A1/fr
Application granted granted Critical
Publication of EP0143735B1 publication Critical patent/EP0143735B1/fr
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
    • H01H33/6644—Contacts; Arc-extinguishing means, e.g. arcing rings having coil-like electrical connections between contact rod and the proper contact
    • 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
    • H01H2033/6648—Contacts containing flexible parts, e.g. to improve contact pressure
    • 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
    • H01H33/6643—Contacts; Arc-extinguishing means, e.g. arcing rings having disc-shaped contacts subdivided in petal-like segments, e.g. by helical grooves

Definitions

  • a contact piece is already known, which is designed such that the coil formed by it is not flowed through by the continuous current of the vacuum interrupter; the coil configuration is achieved through slots in hollow disc-shaped bodies.
  • An inner end face of the disc-shaped bodies is separated from the associated end face of the contact bolt by a gap; when the two disc-shaped hollow bodies are pressed by a drive for the vacuum interrupter, the gaps are closed and the current essentially runs through the contact bolts.
  • the invention relates to such a contact arrangement for a vacuum interrupter with switching pieces arranged on two relatively movable contact bolts, each with a contact body, which is firmly connected to the contact bolt by means of a contact sheath at least partially surrounding the respective contact bolt and with a contact surface facing away from the opposite contact body a spring force is pressed parallel to the end face of the associated contact pin in such a way that the contact area of the contact surface of the Face is lifted off.
  • the object on which the invention is based is to design this contact arrangement in such a way that the principle of switching off a coil on the switching element during continuous operation of the vacuum interrupter can be used not only for very specific hollow switching elements with a defined coil configuration, but also for any switching element configurations with any coil configurations.
  • the main advantage of the invention is to be seen in the fact that regardless of the design of the contact pieces, that is to say in particular the design of the contact jacket and the end face of the contact pieces adapted to the respectively opposite contact piece, and also regardless of the direction of the magnetic field to be generated, the same basic structure a contact arrangement is maintained, which is simple in construction and manufacturing technology and ensures great functional safety.
  • the optimum bending properties of the entire contact arrangement with regard to the selected distance between the contact surface and the end face of the contact bolt and taking into account the actuating force applied by the drive device for the vacuum interrupter can be changed within very wide limits by the geometry of the S + ege.
  • Deflection of a clamped rod From the third power of the rod dimension in the direction of deflection, it is to be regarded as advantageous, in particular to vary the dimensions of the webs in the axial direction of the contact bolts in order to adapt the entire contact arrangement to the desired elastic properties.
  • the extension of the webs in the axial direction of the contact bolts is smaller than in the direction perpendicular to this and to the longitudinal axis of the webs.
  • the webs are formed by a plurality of plates, stacked one above the other, made of a material with high electrical conductivity - for example copper - and at least one spring firmly connected to it - for example Elmedur spring.
  • the webs are preferably arranged axially symmetrically.
  • the connection of the contact jacket to the contact pin is formed by two diametrical webs.
  • the axially parallel deflection of the contact jacket is also promoted in that the web forming the contact surface connects diametrical regions of the contact jacket to one another.
  • a design of the contact piece can also be selected, in which a web for connecting the contact pin to the contact jacket only faces a web extending from the contact jacket to the end face of the contact bolt to form the contact surface. This means that half of the total current flows in each cross-sectional area of the contact jacket. In both implementations, a predominantly axially aligned magnetic field is generated.
  • An additional radial component of the magnetic field or a predominantly radially oriented magnetic field can be achieved, for example, by incorporating slots which are inclined in the contact jacket against its central axis.
  • the web forming the contact surface is then on its area opposite the contact surface, for. B. connected to a disc-shaped cover electrode.
  • An advantageous development of the invention relates to the generation and superimposition of pronounced axially directed. and radially directed magnetic fields and provides in this connection that the web forming the contact surface receives on its area opposite the contact surface the central region of the bottom of a flat pot-like contact piece.
  • the contact jacket is preferably assigned the task of generating a predominantly axially directed magnetic field. This can be achieved with the most varied of configurations, in particular also with a current-branching so-called multipole arrangement.
  • the simplest realization of radial field components can be achieved in that the wall of the contact piece has oblique slots which are arranged in opposite directions in the two contact pieces opposite one another. In order to reduce the harmful effects of eddy currents on the quenching behavior of the vacuum interrupter, the slots in the bottom of the contact piece can be continued.
  • customary designs of such pot-like contact pieces can also be used in the context of the contact arrangement according to the invention.
  • So z. B. provided that the contact piece is covered with a cover electrode made of contact material.
  • the measure to prevent or reduce eddy currents is that regions with a reduced overall cross section are arranged in a locally distributed manner in the cover electrode. This reduction in the total cross-section can take place, for example, in a known manner through slots.
  • the inside diameter of the contact jacket is at least as large as the outside diameter of the cover electrode. This ensures that the entire area of the cover electrode is penetrated by the predominantly axially aligned magnetic field, which is essentially generated in the contact jacket.
  • the dimensioning of the resilient webs, the distance between the end face of the contact pin and the contact surface of one of the webs and the adaptation of the drive of the vacuum interrupter to these criteria should expediently take place in such a way that the contact surface is already separated from the end face of the contact pin and thus the current is commutated on the contact jacket when the two superimposed cover electrodes of the two switching pieces of the contact arrangement are separated from one another.
  • the time constant T L inherent in the coil arrangement formed by the contact jacket must be dimensioned as small as possible.
  • the resistance value R of the contact jacket can be increased. This can be achieved by reducing the cross section of the contact jacket; however, this is only possible to a limited extent with regard to strength requirements and limited specific heat resistance of the contact material. This measure can, however, be made by appropriate choice of material, e.g. B. resistance material instead of copper, replace or at least supplement. In order to avoid damage to the contact surface and the end face of the contact bolt due to arcs possibly occurring in this area, these surfaces can be covered with contact material layers; this prevents welding of the surfaces.
  • FIG. 1 shows a quarter of a contact piece fastened to a contact pin
  • FIG. 2 shows the position and dimensioning of the essential components of the switching element according to FIG. 1 on a reduced scale compared to FIG. 1.
  • the part of the contact arrangement shown essentially comprises a contact pin 1, a contact jacket 4 which is connected to the contact pin 1 by means of two webs 2, 3 and a further web 5 which connects diametrical areas of the contact jacket 4 to one another and forms a contact area 5a in its central area, that of the end face 1a of the contact pin 1 faces.
  • the web 5 is at the same time the carrier of the contact body 6 - shown in an exploded view - which is closed at the top by a cover electrode 7 and has slots 6a which, in cooperation with similar but oppositely inclined slots, have a magnetic field in the second switching element (not shown) radial component generated.
  • the webs 2, 3, 5 are each formed by a plurality of copper strips 2b, 5b which are layered in parallel and an Elmedur spring 2c, 5c forming the base for the copper strips 2b, 5b.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
EP84730087A 1983-09-02 1984-08-16 Dispositif de contact pour interrupteurs sous vide Expired EP0143735B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833332092 DE3332092A1 (de) 1983-09-02 1983-09-02 Kontaktanordnung fuer eine vakuumschaltroehre
DE3332092 1983-09-02

Publications (2)

Publication Number Publication Date
EP0143735A1 true EP0143735A1 (fr) 1985-06-05
EP0143735B1 EP0143735B1 (fr) 1988-03-02

Family

ID=6208358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84730087A Expired EP0143735B1 (fr) 1983-09-02 1984-08-16 Dispositif de contact pour interrupteurs sous vide

Country Status (4)

Country Link
US (1) US4617434A (fr)
EP (1) EP0143735B1 (fr)
JP (1) JPS6072120A (fr)
DE (2) DE3332092A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3610241A1 (de) * 1986-03-26 1987-10-01 Siemens Ag Kontaktanordnung fuer vakuumschalter mit axialem magnetfeld
DE3724811A1 (de) * 1987-07-27 1989-02-09 Bbc Brown Boveri & Cie Kontaktanordnung fuer einen vakuumschalter
DE3724813A1 (de) * 1987-07-27 1989-02-09 Bbc Brown Boveri & Cie Kontaktanordnung fuer einen vakuumschalter
DE19534398A1 (de) * 1995-09-16 1997-03-20 Abb Patent Gmbh Kontaktanordnung für eine Vakuumschaltkammer
RU2105374C1 (ru) * 1996-01-22 1998-02-20 Товарищество с ограниченной ответственностью "КАНПАК" Вакуумный выключатель
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
US8653396B2 (en) * 2011-09-28 2014-02-18 Eaton Corporation Vacuum switch and hybrid switch assembly therefor
EP2731120A1 (fr) * 2012-11-08 2014-05-14 ABB Technology AG Système d'interrupteur à vide pour disjoncteur moyenne tension avec des contacts TMF en forme de coupe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1261219B (de) * 1964-11-16 1968-02-15 Westinghouse Electric Corp Vakuumschalter
FR2235469A1 (fr) * 1973-06-30 1975-01-24 Tokyo Shibaura Electric Co
US4196327A (en) * 1976-12-06 1980-04-01 Hitachi, Ltd. Vacuum interrupter
US4225763A (en) * 1978-03-23 1980-09-30 General Electric Company Means for suppressing contact-separation at the end of a vacuum circuit-breaker closing operation
EP0073925A1 (fr) * 1981-08-26 1983-03-16 Siemens Aktiengesellschaft Disposition de contacts pour interrupteur à vide
EP0082801A1 (fr) * 1981-12-23 1983-06-29 Siemens Aktiengesellschaft Tube interrupteur à vide avec un anneau pour créer un champ magnétique axial

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5348280U (fr) * 1976-09-28 1978-04-24
DE2740994C3 (de) * 1977-09-12 1980-09-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Vakuumschalter
JPS54162180A (en) * 1978-06-14 1979-12-22 Hitachi Ltd Vacuum breaker

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1261219B (de) * 1964-11-16 1968-02-15 Westinghouse Electric Corp Vakuumschalter
FR2235469A1 (fr) * 1973-06-30 1975-01-24 Tokyo Shibaura Electric Co
US4196327A (en) * 1976-12-06 1980-04-01 Hitachi, Ltd. Vacuum interrupter
US4225763A (en) * 1978-03-23 1980-09-30 General Electric Company Means for suppressing contact-separation at the end of a vacuum circuit-breaker closing operation
EP0073925A1 (fr) * 1981-08-26 1983-03-16 Siemens Aktiengesellschaft Disposition de contacts pour interrupteur à vide
EP0082801A1 (fr) * 1981-12-23 1983-06-29 Siemens Aktiengesellschaft Tube interrupteur à vide avec un anneau pour créer un champ magnétique axial

Also Published As

Publication number Publication date
EP0143735B1 (fr) 1988-03-02
DE3469637D1 (en) 1988-04-07
JPH0133013B2 (fr) 1989-07-11
DE3332092A1 (de) 1985-03-21
JPS6072120A (ja) 1985-04-24
US4617434A (en) 1986-10-14

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