EP0162801B1 - Structure de contact pour un interrupteur sous vide - Google Patents

Structure de contact pour un interrupteur sous vide Download PDF

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Publication number
EP0162801B1
EP0162801B1 EP85730061A EP85730061A EP0162801B1 EP 0162801 B1 EP0162801 B1 EP 0162801B1 EP 85730061 A EP85730061 A EP 85730061A EP 85730061 A EP85730061 A EP 85730061A EP 0162801 B1 EP0162801 B1 EP 0162801B1
Authority
EP
European Patent Office
Prior art keywords
contact
slots
base plate
slot
contact piece
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
EP85730061A
Other languages
German (de)
English (en)
Other versions
EP0162801A1 (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 is designed as a pot contact piece, the wall of which is provided with obliquely inclined slots, and each oblique slot with 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.
  • 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 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 the radial direction towards and away from the wall of the contact piece. In the walls of the contact pieces, 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 is based on the object of specifying a contact arrangement for a vacuum switch, the contact pieces of which are provided with slots which are not only very easy to produce, but also, by their formation in the contact pieces, enable generation of particularly strong magnetic fields.
  • 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, with the respective additional 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 greater, the greater the distance at which the further and additional slots, which are connected to each other via an oblique slot, in the Base plate or the contact disk on different sides of the radially aligned plane run 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;
  • a second process step the oblique slots in the wall and the further and additional slots in the base plate and the contact disk that are connected to them are worked into the respective contact piece.
  • the contact pieces of the contact arrangement according to the invention are particularly simple and Produce inexpensively by sawing the oblique slots in the wall and the additional and additional slots in the base plate and the contact disk connected to them into the contact piece in question.
  • 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 split 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 pot-shaped contact carrier 1 with a base plate 2 and a hollow cylindrical wall 3. In order to be able to represent this better, a portion of the contact piece shown in the side view has broken out in the figure.
  • a contact disk 4 fastened to it in the manner of a lid, 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.
  • a non-conductive, non-illustrated spacer made of preferably ferromagnetic material with a small remanence is arranged in the interior of the contact piece.
  • 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 center 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 arrangement of the slots 7, 6 and 8 in the base plate 2, the wall 3 and the contact disk 4 deflects the current flowing through the contact piece in such a way that it receives a current component 11 flowing in the circumferential direction to the contact piece, which component penetrates the contact piece Magnetic field 12 generated.
  • the contact piece shown is arranged axially opposite another contact piece, not shown, which, with the assumption that the contact piece shown is fixed, is constructed in the same way as the fixed contact piece, 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)

Claims (3)

1. Dispositif de contact pour un interrupteur à vide comportant deux pièces de contact disposées axialement en vis-à-vis et mobiles l'une par rapport à l'autre, et dans lequel chaque pièce de contact est réalisée sous la forme d'une pièce de contact en forme de pot dont la paroi (3) est munie de fentes obliques (6), et chaque fente oblique (6) est reliée à une autre fente respective (7) ménagée dans une plaque de base (2) ainsi qu'à une fente supplémentaire respective (8) ménagée dans un disque de contact (4) reposant à la manière d'un couvercle sur la paroi (3), et dans lequel en outre la fente oblique (6) ainsi que l'autre fente associée (7) ménagée dans la plaque de base (2) s'étendent dans un plan respectif, caractérisé par le fait que chaque fente supplémentaire (8) ménagée dans le disque de contact (4) s'étend respectivement avec une forme rectiligne dans le plan dans lequel s'étendent la fente oblique (6) qui lui est respectivement associée et se trouve ménagée dans la paroi (3), et l'autre fente (7) qui est ménagée dans la plaque de base (2), la fente supplémentaire considérée (7) ménagée dans le disque de contact (4) et l'autre fente associée (8) ménagée dans la plaque de base (2) s'étendant respectivement sur des côtés différents d'un plan radial (9), parallèle à ces fentes (7, 8).
2. Procédé pour fabriquer un dispositif de contact suivant la revendication 1, caractérisé par le fait que pour chaque pièce de contact, lors d'une première phase opératoire, on fixe le disque de contact respectif (4) à la paroi (3) et qu'au cours d'une seconde phase opératoire, on forme par usinage, dans la pièce de contact respective, des fentes obliques (6) situées dans la paroi (3) et les autres fentes et fentes supplémentaires (7, 8), qui sont reliées respectivement aux précédentes, dans la plaque de base (2) et dars le disque de contact (4).
3. Procédé suivant la revendication 2,
caractérisé par le fait qu'on aménage par sciage les fentes obliques (6) dans la paroi (3) et les autres fentes et fentes supplémentaires (7, 8) dans la plaque de base (2) et dans le disque de contact (4).
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
DE19843415744 DE3415744A1 (de) 1984-04-26 1984-04-26 Kontaktanordnung fuer einen vakuumschalter
DE3415744 1984-04-26

Publications (2)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04505985A (ja) * 1989-05-31 1992-10-15 シーメンス アクチエンゲゼルシヤフト 真空スイツチ用ＣｕＣｒ接触片の製法並びに付属接触片
DE4002933A1 (de) * 1990-02-01 1991-08-08 Sachsenwerk Ag Vakuumschaltkammer
WO1996009637A1 (fr) * 1994-09-22 1996-03-28 Ernst Slamecka Systeme de contact pour commutateur a vide
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1090872A (en) * 1964-02-11 1967-11-15 Ass Elect Ind Improvements relating to vacuum switches
DE2638700C3 (de) * 1976-08-27 1983-11-10 Siemens AG, 1000 Berlin und 8000 München Elektrischer Vakuumschalter
JPS5816731B2 (ja) * 1977-12-28 1983-04-01 株式会社明電舎 真空しや断器の電極
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
GB8321368D0 (en) * 1983-08-09 1983-09-07 Vacuum Interrupters Ltd High current switch contacts

Also Published As

Publication number Publication date
DE3560296D1 (en) 1987-08-06
EP0162801A1 (fr) 1985-11-27
JPS60236426A (ja) 1985-11-25
DE3415744A1 (de) 1985-10-31

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