EP0162801A1 - Structure de contact pour un interrupteur sous vide - Google Patents

Structure de contact pour un interrupteur sous vide Download PDF

Info

Publication number
EP0162801A1
EP0162801A1 EP85730061A EP85730061A EP0162801A1 EP 0162801 A1 EP0162801 A1 EP 0162801A1 EP 85730061 A EP85730061 A EP 85730061A EP 85730061 A EP85730061 A EP 85730061A EP 0162801 A1 EP0162801 A1 EP 0162801A1
Authority
EP
European Patent Office
Prior art keywords
contact
slot
base plate
slots
wall
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
EP85730061A
Other languages
German (de)
English (en)
Other versions
EP0162801B1 (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
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 EP0162801A1 publication Critical patent/EP0162801A1/fr
Application granted granted Critical
Publication of EP0162801B1 publication Critical patent/EP0162801B1/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
    • H01H33/6642—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

Definitions

  • the invention relates to a contact arrangement for a vacuum switch with two axially oppositely arranged and relatively movable contact pieces, each contact piece being designed as a pot contact piece, the wall of which is provided with obliquely inclined slots, and each oblique slot each having a further slot in a base plate and is each connected to an additional slot in a contact disk lying on the wall in a cover-like manner, and the oblique slot also runs in one plane together with the associated further slot in the base plate.
  • obliquely inclined slots are milled into the walls of the two contact pieces in each case, which extend into the base plate of the respective contact piece and as further slots in the base plate from the outer edge thereof to a circular area in the middle.
  • the slots subdivide the respective base plate into line segments which extend from the outer edge of the base plate largely in the radial direction to the center thereof.
  • the contact disk which rests on the wall of the respective contact piece in a lid-like manner, is also divided into line segments by essentially radially extending slots, the course of the additional slots only deviating slightly from the radial direction in the edge region of the contact disk connected to the wall of the contact piece, so that the to additional slots in the contact disc continuously merge into the assigned oblique slots in the wall.
  • the current flowing through the contact pieces therefore flows through the line segments of the base plate and the contact disk of the respective contact piece almost in a radial direction towards or from the wall of the contact piece. , this way.
  • the current is deflected due to the oblique slots in such a way that it receives a current component flowing in the circumferential direction of the contact pieces.
  • This current component generates a magnetic field which is in phase with the current and passes through both contact pieces in the axial direction.
  • the axial magnetic field causes the arc that arises between the contact pieces to be diffuse, which means that the contact disks burn up less. Since the angle of inclination of the oblique slots in the walls of the contact pieces is limited by their external dimensions, the axial magnetic field generated in the known contact arrangement is relatively weak, so that the arc can contract when large currents are switched off, which results in increased erosion of the contact disks .
  • the invention has for its object to provide a contact arrangement for a vacuum switch, the contact pieces are provided with slots that are not only very easy to manufacture, but also allow a particularly strong magnetic fields to be generated by their formation in the contact pieces.
  • each additional slot in the contact disk according to the invention runs in each case in a straight line in the plane in which the respectively assigned oblique slot in the wall and further slot in the base plate runs, each additional contact in the contact arrangement of the type specified slot in the contact disk and the associated further slot in the base plate each run on different sides of a radially oriented plane parallel to these slots.
  • the advantage of the contact arrangement according to the invention is that both the base plate and the contact disk of the respective contact piece are divided into such line elements by the further and additional slots formed in them that a current flowing through them receives a current component in the circumferential direction of the contact piece.
  • This current component causes an intensification of the magnetic field generated by the current in the wall of the contact piece, as a result of which an improved quenching of the resulting arc is achieved when the contact pieces are separated.
  • the current component flowing in the base plate and the contact disk of the respective contact piece in the circumferential direction and the magnetic field generated by it are all the greater, the greater the distance in which the further and additional slots, which are connected to each other via an oblique slot, in the base plate or the contact disk run on different sides of the radially aligned plane parallel to this.
  • Another function of the further and additional slots in the base plate and the contact disk is that they contribute to the reduction of eddy currents in the respective contact piece.
  • the respective contact disk is fastened to the wall in each contact piece in a first method step; in a second process step, the oblique slots in the wall and the further and additional slots in the base plate and the contact disk, each of which is connected to them worked into the respective contact piece.
  • the contact pieces of the contact arrangement according to the invention is particularly easy and inexpensive to produce, by the inclined slits in the wall and respectively associated with them further and additional slots in the base plate and-the contact disc gSymptomsä into the corresponding contact piece are t.
  • Another advantage of this manufacturing process is that, as a result of the manufacture of the slots after the contact disks have been attached to the walls of the contact pieces, the oblique slots in the wall of each contact piece pass into the slots of the contact disk which are connected to them without formation of shoulders; such an exact transition, on the other hand, cannot be achieved if the wall and the contact disk of the respective contact piece are cut separately.
  • one of the two contact pieces is shown in the view from below, in side view and top view.
  • the contact piece shown of the contact arrangement according to the invention is designed as a so-called pot contact piece, which has a cup-shaped contact carrier 1 with a base plate 2 and a hollow cylindrical wall 3. In order to better illustrate this, a portion of the contact piece shown in the side view has broken out in the figure.
  • a cover disk 4 attached to it, which is designed as a circular disk with a bevelled outer edge and a raised contact surface in its center.
  • the contact disk 4 preferably consists of a chrome-copper composite material.
  • non-conductive spacer made of preferably ferromagnetic material with a small remanence.
  • the contact piece is connected in the region of the center of the base plate 2 to a support element 5 in the form of a support bolt.
  • the wall 3 of the contact piece is provided in the circumferential direction at regular intervals with oblique slots 6, each inclined to the contact plate 4.
  • the base plate 2 and the contact plate 4 are each provided with an equal number of further slots 7 or additional slots 8, each of which extends from the outer edge to a circular area in the middle of the base plate 2 or the contact plate 4 in such a straight line that each oblique slot 6 in the wall 3 is each connected to one of the further and additional slots 7 and 8 in the base plate 2 and the contact plate 4 and runs with them in one plane; the additional slot 8 in the contact disk 4 and the associated further slot 7 in the base plate 2 are each formed on different sides of a radially oriented plane 9 parallel to these slots 7 and 8.
  • the oblique slots 6 in the wall 3 and the further and additional slots 7 and 8 in the base plate 2 and the contact disk 4 connected to them are each formed by saw cuts inserted laterally into the respective contact piece.
  • the arrows 10 indicate the current flow through the contact piece.
  • the current supplied to the contact piece via the support element 5 enters the base plate 2 of the contact piece and flows therein from the inside to the outside to the wall 3.
  • the current flows in the direction of the edge region of the contact disk 4, in which the current collected and fed to the raised surface in the middle of the contact plate 4, where the current exits the contact piece.
  • the slots 7, 6 and 8 in the base plate 2, the wall 3 and the contact disk 4 the current flowing through the contact piece is deflected such that it receives a current component 11 flowing in the circumferential direction to the contact piece, which generates a magnetic field 12 passing through the contact piece.
  • the contact piece shown is arranged axially opposite another contact piece, not shown, which, with the assumption that the contact piece shown is stationary, is constructed in the same way as the fixed contact piece shown, except for its mobility in the axial direction.
  • the current passing from the fixed contact piece to the opposite movable contact piece, not shown, generates a magnetic field in the latter, which is rectified to the magnetic field emanating from the fixed contact piece and which generates an axially aligned magnetic field between the two contact pieces.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
EP85730061A 1984-04-26 1985-04-17 Structure de contact pour un interrupteur sous vide Expired EP0162801B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3415744 1984-04-26
DE19843415744 DE3415744A1 (de) 1984-04-26 1984-04-26 Kontaktanordnung fuer einen vakuumschalter

Publications (2)

Publication Number Publication Date
EP0162801A1 true EP0162801A1 (fr) 1985-11-27
EP0162801B1 EP0162801B1 (fr) 1987-07-01

Family

ID=6234528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85730061A Expired EP0162801B1 (fr) 1984-04-26 1985-04-17 Structure de contact pour un interrupteur sous vide

Country Status (3)

Country Link
EP (1) EP0162801B1 (fr)
JP (1) JPS60236426A (fr)
DE (2) DE3415744A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015424A1 (fr) * 1989-05-31 1990-12-13 Siemens Aktiengesellschaft PROCEDE DE FABRICATION DE CONTACTS AU CuCr POUR DES INTERRUPTEURS A VIDE ET CONTACT CORRESPONDANT
GB2240660A (en) * 1990-02-01 1991-08-07 Sachsenwerk Licht & Kraft Ag Vacuum switch

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6072141A (en) * 1994-09-22 2000-06-06 Slamecka; Ernst Vacuum switch contact arrangement
DE19518233A1 (de) * 1995-05-12 1996-11-14 Slamecka Ernst Vakuumschalter-Kontaktanordnung
DE102007063414B3 (de) * 2007-12-18 2009-04-23 Siemens Ag Kontaktscheibe für eine Vakuumschaltröhre
KR101085286B1 (ko) † 2010-10-18 2011-11-22 엘에스산전 주식회사 진공 인터럽터의 접점

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1424276A (fr) * 1964-02-11 1966-01-07 Ass Elect Ind Perfectionnements aux montages de contact des interrupteurs sous vide
DE2638700A1 (de) * 1976-08-27 1978-03-02 Siemens Ag Elektrischer vakuumschalter
DE3227482A1 (de) * 1982-07-20 1983-02-03 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Vakuumschalter-kontaktanordnung mit vorrichtung zur erzeugung eines achsialen magnetfeldes
DE3231593A1 (de) * 1982-08-25 1984-03-01 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung fuer vakuumschalter
EP0133368A2 (fr) * 1983-08-09 1985-02-20 Vacuum Interrupters Limited Contact pour interrupteur haut courant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5816731B2 (ja) * 1977-12-28 1983-04-01 株式会社明電舎 真空しや断器の電極

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1424276A (fr) * 1964-02-11 1966-01-07 Ass Elect Ind Perfectionnements aux montages de contact des interrupteurs sous vide
DE2638700A1 (de) * 1976-08-27 1978-03-02 Siemens Ag Elektrischer vakuumschalter
DE3227482A1 (de) * 1982-07-20 1983-02-03 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Vakuumschalter-kontaktanordnung mit vorrichtung zur erzeugung eines achsialen magnetfeldes
DE3231593A1 (de) * 1982-08-25 1984-03-01 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung fuer vakuumschalter
EP0133368A2 (fr) * 1983-08-09 1985-02-20 Vacuum Interrupters Limited Contact pour interrupteur haut courant

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015424A1 (fr) * 1989-05-31 1990-12-13 Siemens Aktiengesellschaft PROCEDE DE FABRICATION DE CONTACTS AU CuCr POUR DES INTERRUPTEURS A VIDE ET CONTACT CORRESPONDANT
US5330702A (en) * 1989-05-31 1994-07-19 Siemens Aktiengesellschaft Process for producing CuCr contact pieces for vacuum switches as well as an appropriate contact piece
GB2240660A (en) * 1990-02-01 1991-08-07 Sachsenwerk Licht & Kraft Ag Vacuum switch
US5099093A (en) * 1990-02-01 1992-03-24 Sachsenwerk Aktiengesellschaft Vacuum switching chamber
GB2240660B (en) * 1990-02-01 1994-07-27 Sachsenwerk Licht & Kraft Ag Vacuum switch chamber assembly

Also Published As

Publication number Publication date
EP0162801B1 (fr) 1987-07-01
JPS60236426A (ja) 1985-11-25
DE3415744A1 (de) 1985-10-31
DE3560296D1 (en) 1987-08-06

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