EP0143735B1 - Kontaktanordnung für eine Vakuumschaltröhre - Google Patents

Kontaktanordnung für eine Vakuumschaltröhre Download PDF

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Publication number
EP0143735B1
EP0143735B1 EP84730087A EP84730087A EP0143735B1 EP 0143735 B1 EP0143735 B1 EP 0143735B1 EP 84730087 A EP84730087 A EP 84730087A EP 84730087 A EP84730087 A EP 84730087A EP 0143735 B1 EP0143735 B1 EP 0143735B1
Authority
EP
European Patent Office
Prior art keywords
contact
arrangement
contact element
casing
pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84730087A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0143735A1 (de
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
Original Assignee
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
Publication of EP0143735A1 publication Critical patent/EP0143735A1/de
Application granted granted Critical
Publication of EP0143735B1 publication Critical patent/EP0143735B1/de
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

  • outer coils that is, coils which are arranged outside the actual vacuum interrupter chamber, and the use of the contact pin to form a magnetic field extending into the area of the contact electrodes
  • the invention relates to such a contact arrangement for vacuum interrupters, with switching pieces arranged on two contact pins which can be moved relative to one another and each have a contact body, each contact pin being provided with a contact jacket which at least partially surrounds this and this with both the associated contact body and the contact pin is firmly connected and each contact body in the closed state of the switching tube with a contact surface facing away from the opposite contact body is pressed against a spring force against the end face of the associated contact pin, while due to the aforementioned spring force with this contact surface when opening the contact arrangement from the end face of the associated contact pin is lifted off.
  • the object on which the invention is based is to design this contact arrangement in such a way that the switching off of a coil on the switching element during continuous operation of the vacuum interrupter does not only take place in the case of hollow switching elements shaped in a very specific manner, but can be brought about with any switching element designs with any coil configurations.
  • connection of the contact sheath to the contact pin on the one hand and to the contact body on the other hand is in each case formed by at least one separately formed web, fastened to the parts connected by it, with high electrical conductivity and spring-like flexibility and that the above-mentioned opposite contact surface facing away from the contact body of each contact body is formed by the side facing the respective contact pin of the web connecting the contact jacket and the contact body.
  • 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 webs.
  • the thickness of the webs in the axial direction of the contact bolts is advantageously less than in the direction perpendicular thereto.
  • the webs are formed by the stacking of several plates made of a material of high electrical conductivity - for example copper - and at least one firmly connected, also plate-shaped spring - 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 diametrically aligned webs.
  • the axially parallel deflection of the contact jacket is also promoted in that the web connecting the contact jacket to the contact body 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 a web extending from the contact jacket to the end face of the contact pin to form the Faces 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 advantageous development of the invention relates to the generation and superimposition of pronounced axially directed and radially directed magnetic fields and provides in this context that the contact body is pot-shaped and flat and is attached to the central region of its pot base on the web connecting the contact jacket to the contact body .
  • 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 body has slanted slots which are arranged in opposite directions in the two opposite contact bodies. 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 body can be continued.
  • the inside diameter of the contact jacket is dimensioned 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 elements of the contact arrangement are separated from one another.
  • the resistance R of the contact jacket can be increased to reduce the time constant . 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 selecting the appropriate materials, 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, which faces the end face 1a of the contact pin 1.
  • 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 in the second switching element (not shown), have a magnetic field with a radial Component created.
  • 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.
  • FIG. 2 shows the current profile in the plane of the contact jacket 4 during the opening state of the contact arrangement.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
EP84730087A 1983-09-02 1984-08-16 Kontaktanordnung für eine Vakuumschaltröhre Expired EP0143735B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=6208358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84730087A Expired EP0143735B1 (de) 1983-09-02 1984-08-16 Kontaktanordnung für eine Vakuumschaltröhre

Country Status (4)

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

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
DE3724813A1 (de) * 1987-07-27 1989-02-09 Bbc Brown Boveri & Cie Kontaktanordnung fuer einen vakuumschalter
DE3724811A1 (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 (en) * 2012-11-08 2014-05-14 ABB Technology AG Vacuum interrupter arrangement for a medium voltage circuit breaker with cup-shaped TMF-contacts

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283100A (en) * 1964-11-16 1966-11-01 Westinghouse Electric Corp Vacuum circuit interrupter with condensing shield serving as one of the main contacts
JPS547945B2 (enrdf_load_stackoverflow) * 1973-06-30 1979-04-11
JPS5348280U (enrdf_load_stackoverflow) * 1976-09-28 1978-04-24
JPS58810B2 (ja) * 1976-12-06 1983-01-08 株式会社日立製作所 真空しや断器
DE2740994C3 (de) * 1977-09-12 1980-09-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Vakuumschalter
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
JPS54162180A (en) * 1978-06-14 1979-12-22 Hitachi Ltd Vacuum breaker
DE3133799A1 (de) * 1981-08-26 1983-03-17 Siemens AG, 1000 Berlin und 8000 München "kontaktanordnung fuer vakuumschalter"
DE3151907A1 (de) * 1981-12-23 1983-06-30 Siemens AG, 1000 Berlin und 8000 München Vakuumschaltroehre mit einem ring zur erzeugung eines axialen magnetfeldes

Also Published As

Publication number Publication date
JPS6072120A (ja) 1985-04-24
US4617434A (en) 1986-10-14
EP0143735A1 (de) 1985-06-05
JPH0133013B2 (enrdf_load_stackoverflow) 1989-07-11
DE3332092A1 (de) 1985-03-21
DE3469637D1 (en) 1988-04-07

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