Nothing Special   »   [go: up one dir, main page]

EP1198812B1 - Contact arrangement for a vacuum interrupter - Google Patents

Contact arrangement for a vacuum interrupter Download PDF

Info

Publication number
EP1198812B1
EP1198812B1 EP00958175A EP00958175A EP1198812B1 EP 1198812 B1 EP1198812 B1 EP 1198812B1 EP 00958175 A EP00958175 A EP 00958175A EP 00958175 A EP00958175 A EP 00958175A EP 1198812 B1 EP1198812 B1 EP 1198812B1
Authority
EP
European Patent Office
Prior art keywords
contact
contact region
arrangement according
contact arrangement
contact area
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 - Lifetime
Application number
EP00958175A
Other languages
German (de)
French (fr)
Other versions
EP1198812A1 (en
Inventor
Johannes-Gerhard Banghard
Klemens Fieberg
Michael Hahn
Roman Renz
Werner Hartmann
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 EP1198812A1 publication Critical patent/EP1198812A1/en
Application granted granted Critical
Publication of EP1198812B1 publication Critical patent/EP1198812B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66Vacuum switches
    • H01H33/664Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6642Contacts; 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66Vacuum switches
    • H01H33/664Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H2033/6648Contacts containing flexible parts, e.g. to improve contact pressure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/04Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12Auxiliary contacts on to which the arc is transferred from the main contacts

Definitions

  • the invention is in the field of electrical components and is in the design of vacuum interrupters apply where at least one of the two Contacts has an inner contact area that one outer contact area serving to extinguish the arc axially dominated.
  • Vacuum interrupters with contact arrangements of the type mentioned are known.
  • the two contacts of which in usually only one is axially movable to another with circular or slightly conical contact surfaces, facing each other.
  • Contacts called as “Impeller electrodes” or “spiral contacts” are formed, have an inner, for switching operating currents provided contact area and an outer, the inner Contact area concentrically surrounding, for switching off provided by short-circuit currents and as a tread for one rotating arc serving contact area.
  • there the inner contact area projects beyond the outer contact area by a certain, not very large amount (US 3,158,719 A, US 3,809,836 A).
  • Vacuum interrupters are also known, in which the for switching of operating currents provided contact area identical to that for switching off short-circuit currents
  • the intended contact area is.
  • These contacts are pot-like formed, the wall of the pot and optionally also the contact ring with several on the rim of the pot Slits are provided that are oblique to the longitudinal axis of the Contact arrangement run. Through these slots the Contact area can be divided into several contact sub-areas (DE 23 21 753 A1, DE 29 12 823 A1).
  • the invention provides that the inner contact area consists of several, on a pitch circle there are adjacent contact sub-areas, each contact portion from the free end a resilient, inclined against the axis of the contact arrangement Contact tongue is formed.
  • Such a configuration of the contact arrangement enables it, the one intended for switching operating currents Contact area in a larger number of about three to ten Subdivide areas, these areas as resilient Form contact tongues, each with a counter contact piece faces and the contact tongues by appropriate Dimensioning of the spring constant as far from each other mechanically to decouple that in the closed state of the contact arrangement all sections have the same contact pressure Experienced.
  • the resilient contact tongues can be arrange so that when opening and closing the contact system a rubbing movement and thus an abrasion in shape of metal chips is avoided.
  • the contact tongues can have enough design space worked out of a flat, conical shell be by axially slitting the shell wall several times.
  • the spring constant is particularly due to the thickness of the Shell wall and the number of slots or the width of the Variable contact tongues. Similar conditions exist, if the contact blades come from a flat, hollow truncated cone due to multiple axial slits in the cone shell are worked out.
  • pot contacts can also be used be worked out of a piece of pipe by its wall is provided with several oblique slots.
  • the described design of the contact tongues can be used with spiral contacts as well as with pot contacts apply.
  • the body used for the reeds can be made of dispersion-hardened copper, a special Copper alloy or from a copper-chrome material with small chromium content. It is manufactured separately and in the middle of each contact in a corresponding Arranged recess and soldered to the rest of the contact body.
  • the contact arrangement according to FIG. 1 consists of an upper one Contact 1 and a lower contact 2 along an axis A with mutually facing contact surfaces axially assigned to each other are.
  • One contact is there - not closer shown, but known way - axially movable.
  • everyone of the two contacts 1 and 2 is with a power supply 3 or 4 provided.
  • each contact is a so-called "spiral contact" trained according to European patent 0 532 513 B1
  • each slot 5 consists of two sections, of which the first section runs parallel to one to the circumference a circular recess 6 tangent and the second section of which consists of a hole, those in the area of the inner end of the first section Contact area between the first section and the circular Recess 6 breaks through.
  • the outside of the recess 6 lying area of the contact forms an outer contact area 7, for switching off short-circuit currents is provided and as a tread for a rotating Arc serves.
  • the recess 6 is so deep that it has an additional Contact body 8 can accommodate an inner Contact area 9 forms.
  • This inner contact area 9, the is intended for switching operating currents the outer, arranged concentrically to the inner contact area Contact area 7 axially by a certain length a for example 2 mm.
  • the contact body 8 has the shape of a flat, conical shell, the shell wall in axial Direction is slit several times. Through this slit 12th a plurality of contact subregions 10 are formed.
  • the one with the Contact piece 1 or 2 soldered bottom of the bowl-shaped Contact body 8 is not slotted, so that by the Slitting several inclined against the axis A of the contact arrangement, resilient contact tongues 11 are formed, the free Each end forms a contact portion 10.
  • contact area 13 is the inner one Contact area forming contact area 13 as a flat, hollow Truncated cone formed, the shell of which is axially slit several times is. However, this slit does not go to the base of the truncated cone to the contact body as a whole to be able to solder the respective contact piece.
  • a hollow cylinder in the form of a pipe section 14 used, according to Figure 5 with oblique to the axis of the contact arrangement extending slots 15 is provided, whereby resilient contact tongues 16 are formed.
  • At the top contact 1 is a contact piece within the pipe section 14 17 arranged, the 1 and 2 forms a mechanical support. With operating currents this contact piece also carries the current, which results in the least Let contact resistances be achieved. In the case of short-circuit currents take over at the beginning of the withdrawal of the additional Contact piece 17, i.e. with a slight increase in Contact resistance, the resilient contact areas of the tubular Contact body 14 and prevent current flow such a complete lifting and welding of the contact system.
  • FIGS. 6 and 7 shows one Pot contact 18, the slotted wall at the edge of the pot with an annular contact disc 19 is covered, wherein this contact disk the outer contact area of the contact forms.
  • a contact body 20 within the pot contact arranged, which is similar to the contact body 14 according to the figures 4 and 5 is formed and consists of a tube piece, the wall of which has a plurality of sloping slots 21 is provided.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

The invention relates to a vacuum interrupter for circuit-breakers. The aim of the invention is to reduce the contact pressure force. To this end, the contacts (1, 2) of the vacuum interrupter are configured in such a way that an inner contact area (9) is situated inside an outer, arc-extinguishing contact area (7). Said inner contact area consists of several spring contact studs (11) that are situated adjacently to each other on a divided circle.

Description

Die Erfindung liegt auf dem Gebiet der elektrischen Bauelemente und ist bei der konstruktiven Ausgestaltung von Vakuumschaltröhren anzuwenden, bei denen wenigstens einer der beiden Kontakte einen inneren Kontaktbereich aufweist, der einen äußeren, der Lichtbogenlöschung dienenden Kontaktbereich axial überragt.The invention is in the field of electrical components and is in the design of vacuum interrupters apply where at least one of the two Contacts has an inner contact area that one outer contact area serving to extinguish the arc axially dominated.

Vakuumschaltröhren mit Kontaktanordnungen der genannten Art sind bekannt. Hierbei sind die beiden Kontakte, von denen in aller Regel nur der eine axial zum anderen bewegbar ist, mit kreis- oder leicht kegelförmigen Kontaktflächen ausgestattet, die einander zugewandt sind. Kontakte, die als sogenannte "Flügelradelektroden" bzw. "Spiralkontakte" ausgebildet sind, weisen einen inneren, für das Schalten von Betriebsströmen vorgesehenen Kontaktbereich und einen äußeren, den inneren Kontaktbereich konzentrisch umgebenden, für das Ausschalten von Kurzschlußströmen vorgesehenen und als Lauffläche für einen rotierenden Lichtbogen dienenden Kontaktbereich auf. Dabei überragt der innere Kontaktbereich den äußeren Kontaktbereich um einen gewissen, nicht sehr großen Betrag (US 3,158,719 A, US 3,809,836 A).Vacuum interrupters with contact arrangements of the type mentioned are known. Here are the two contacts, of which in usually only one is axially movable to another with circular or slightly conical contact surfaces, facing each other. Contacts called as "Impeller electrodes" or "spiral contacts" are formed, have an inner, for switching operating currents provided contact area and an outer, the inner Contact area concentrically surrounding, for switching off provided by short-circuit currents and as a tread for one rotating arc serving contact area. there the inner contact area projects beyond the outer contact area by a certain, not very large amount (US 3,158,719 A, US 3,809,836 A).

Es sind auch Vakuumschaltröhren bekannt, bei denen der für das Schalten von Betriebsströmen vorgesehene Kontaktbereich identisch mit dem für das Ausschalten von Kurzschlußströmen vorgesehene Kontaktbereich ist. Diese Kontakte sind topfartig ausgebildet, wobei die Wandung des Topfes und gegebenenfalls auch der auf dem Topfrand aufgebrachte Kontaktring mit mehreren Schlitzen versehen sind, die schräg zur Längsachse der Kontaktanordnung verlaufen. Durch diese Schlitze kann die Kontaktfläche in mehrere Kontakt-Teilflächen unterteilt sein (DE 23 21 753 A1, DE 29 12 823 A1).Vacuum interrupters are also known, in which the for switching of operating currents provided contact area identical to that for switching off short-circuit currents The intended contact area is. These contacts are pot-like formed, the wall of the pot and optionally also the contact ring with several on the rim of the pot Slits are provided that are oblique to the longitudinal axis of the Contact arrangement run. Through these slots the Contact area can be divided into several contact sub-areas (DE 23 21 753 A1, DE 29 12 823 A1).

Um bei Vakuumschaltröhren verschweißte Kontaktbereiche leichter voneinander trennen zu können, ist es bekannt, jedem Kontakt eine größere Anzahl von Kontaktflächen zu geben und diese elastisch an einem Hauptkontaktkörper zu haltern. Hierzu kann man einen rohrförmigen Hauptkontaktkörper mit radial nach innen ragenden Tragarmen für die Kontaktflächen versehen (US 3,869,589 A).To make welded contact areas easier with vacuum interrupters It is known to be able to separate each other from every contact to give a larger number of contact surfaces and this to be held elastically on a main contact body. For this you can use a radial main contact body with radial support arms projecting inwards for the contact surfaces (US 3,869,589 A).

Für in Luft schaltende Leistungsschalter im Niederspannungsbereich ist es weiterhin an sich bekannt, den bewegbaren Kontakt in mehrere parallel zu einander angeordnete Kontaktfinger aufzuteilen, um die Kontaktandruckkraft zu verringern (US 5,210,385 A).For air circuit breakers in the low voltage range it is still known per se, the movable contact in several contact fingers arranged parallel to each other split to reduce the contact pressure force (US 5,210,385 A).

Bei Vakuumschaltröhren für Leistungsschalter, insbesondere für Leistungsschalter im Niederspannungsbereich (z.B. US 5,661,281), treten aufgrund der hohen Ströme hohe Kräfte an den Kontakten auf, die die Kontakte voneinander abzuheben versuchen. Diese Stromkräfte müssen durch geeigente Maßnahmen kompensiert werden, um ein Abheben der Kontakte mit der Gefahr der Verschweißung der Kontakte untereinander zu vermeiden. Bei mit Vakuumschaltröhren ausgestatteten Schaltern hat man dieses Problem bisher dadurch gelöst, daß zusätzlich zu einer permanent aufgebrachten statischen Kontaktandruckkraft eine zusätzliche Stromschleife eingesetzt wird, mit deren Hilfe kurzzeitig, d.h. insbesondere während des Auftretens von Kurzschlußströmen, hohe dynamische Magnetfeldkräfte erzeugt werden, die kontaktkraftverstärkend wirken. Dadurch muß nicht die gesamte, nur kurzzeitig benötigte Kontaktandruckkraft mechanisch aufgebracht werden. Wegen der relativ hohen Kosten solcher Stromschleifen ist die permanent mechanisch aufzubringende Kontaktkraft jedoch nach wie vor relativ groß und kann insbesondere bei hohen Strömen von mehr als 50 kA mehrere kN pro Schaltpol betragen. Dies erfordert einen entsprechend hohen mechanischen Aufwand im Schaltgerät.For vacuum interrupters for circuit breakers, in particular for circuit breakers in the low voltage range (e.g. US 5,661,281), high forces occur due to the high currents on the contacts that separate the contacts from each other to attempt. These current forces must be taken by suitable measures to be compensated for a lifting of the contacts with the danger avoid welding the contacts to one another. For switches equipped with vacuum interrupters So far, this problem has been solved in that in addition to a permanently applied static contact pressure an additional current loop is used with which Short-term help, i.e. especially during the performance of short-circuit currents, high dynamic magnetic field forces generated that have a contact-strengthening effect. This must not the total contact pressure force that is only required for a short time be applied mechanically. Because of the relatively high The cost of such current loops is permanently mechanical However, the contact force to be exerted is still relatively large and can in particular at high currents of more than 50 kA several kN per switching pole. This requires one accordingly high mechanical effort in the switchgear.

Ausgehend von einer Kontaktanordnung mit den Merkmalen des Oberbegriffes des Patentanspruches 1 liegt der Erfindung daher die Aufgabe zugrunde, die Kontaktanordnung so auszubilden, daß die mechanische Kontaktstelle auf mehrere separate Einzelkontakte mit definierter Federkonstante verteilt ist und daß dennoch die Rotation eines Lichtbogens möglich ist.Starting from a contact arrangement with the features of The preamble of claim 1 is therefore the invention the task of designing the contact arrangement in such a way that the mechanical contact point on several separate Individual contacts with a defined spring constant is distributed and that the rotation of an arc is still possible.

Zur Lösung dieser Aufgabe ist gemäß der Erfindung vorgesehen, daß der innere Kontaktbereich aus mehreren, auf einem Teilkreis nebeneinander angeordneten Kontakt-Teilbereichen besteht, wobei jeder Kontakt-Teilbereich von dem freien Ende einer federnden, gegen die Achse der Kontaktanordnung geneigten Kontaktzunge gebildet ist.To achieve this object, the invention provides that the inner contact area consists of several, on a pitch circle there are adjacent contact sub-areas, each contact portion from the free end a resilient, inclined against the axis of the contact arrangement Contact tongue is formed.

Eine derartige Ausgestaltung der Kontaktanordnung ermöglicht es, den für das Schalten von Betriebsströmen vorgesehenen Kontaktbereich in eine größere Anzahl von etwa drei bis zehn Teilbereichen aufzugliedern, diese Teilbereiche als federnde Kontaktzungen auszubilden, denen jeweils ein Gegenkontaktstück gegenübersteht und die Kontaktzungen durch entsprechende Dimensionierung der Federkonstante soweit voneinander mechanisch zu entkoppeln, daß im geschlossenen Zustand der Kontaktanordnung alle Teilbereiche eine gleich große Kontaktandruckkraft erfahren. Die federnden Kontaktzungen lassen sich dabei so anordnen, daß beim Öffnen und Schließen das Kontaktsystem eine reibende Bewegung und damit ein Abrieb in Form von metallischen Spänen vermieden wird.Such a configuration of the contact arrangement enables it, the one intended for switching operating currents Contact area in a larger number of about three to ten Subdivide areas, these areas as resilient Form contact tongues, each with a counter contact piece faces and the contact tongues by appropriate Dimensioning of the spring constant as far from each other mechanically to decouple that in the closed state of the contact arrangement all sections have the same contact pressure Experienced. The resilient contact tongues can be arrange so that when opening and closing the contact system a rubbing movement and thus an abrasion in shape of metal chips is avoided.

Um für die Dimensionierung der Federkonstanten der Kontaktzungen genügend Gestaltungsraum zu haben, können die Kontaktzungen aus einer flachen, konischen Schale herausgearbeitet sein, indem die Schalenwand mehrfach axial geschlitzt ist. Dabei ist die Federkonstante insbesondere durch die Dicke der Schalenwand und die Anzahl der Schlitze bzw. die Breite der Kontaktzungen variierbar. Ähnliche Verhältnisse sind gegeben, wenn die Kontaktzungen aus einem flachen, hohlen Kegelstumpf durch mehrfache axial verlaufende Schlitzung des Kegelmantels herausgearbeitet sind.In order for the dimensioning of the spring constants of the contact tongues The contact tongues can have enough design space worked out of a flat, conical shell be by axially slitting the shell wall several times. The spring constant is particularly due to the thickness of the Shell wall and the number of slots or the width of the Variable contact tongues. Similar conditions exist, if the contact blades come from a flat, hollow truncated cone due to multiple axial slits in the cone shell are worked out.

In Anlehnung an die Gestaltung der geschlitzten Kontaktträger von sogenannten Topfkontakten können die Kontaktzungen auch aus einem Rohrstück herausgearbeitet sein, indem dessen Wandung mit mehreren schräg verlaufenden Schlitzen versehen ist.Based on the design of the slotted contact carrier the so-called pot contacts can also be used be worked out of a piece of pipe by its wall is provided with several oblique slots.

Die beschriebene konstruktive Gestaltung der Kontaktzungen läßt sich sowohl bei Spiralkontakten als auch bei Topfkontakten anwenden. Der für die Kontaktzungen verwendete Körper kann dabei aus dispersionsgehärtetem Kupfer, einer speziellen Kupferlegierung oder aus einem Kupfer-Chrom-Werkstoff mit kleinem Chromanteil bestehen. Er wird gesondert gefertigt und in der Mitte des jeweiligen Kontaktes in einer entsprechenden Ausnehmung angeordnet und mit dem übrigen Kontaktkörper verlötet.The described design of the contact tongues can be used with spiral contacts as well as with pot contacts apply. The body used for the reeds can be made of dispersion-hardened copper, a special Copper alloy or from a copper-chrome material with small chromium content. It is manufactured separately and in the middle of each contact in a corresponding Arranged recess and soldered to the rest of the contact body.

Mehrere Ausführungsbeispiele von gemäß der Erfindung ausgebildeten Kontaktanordnungen sind in den Figuren 1 bis 7 dargestellt. Dabei zeigt

Figur 1
ein erstes Ausführungsbeispiel einer Kontaktanordnung, bei der der innere Kontaktbereich von einem schalenförmigen Kontaktkörper gebildet ist,
Figur 2
eine Draufsicht auf eine Kontaktanordnung gemäß Figur 1,
Figur 3
ein zweites Ausführungsbeispiel einer Kontaktanordnung mit einem als hohler Kegelstumpf ausgebildeten inneren Kontaktbereich,
Figur 4
ein drittes Ausführungsbeispiel mit einem als geschlitztes Rohrstück ausgebildeten inneren Kontaktbereich,
Figur 5
eine schematische Darstellung des inneren Kontaktbereiches gemäß Figur 4 in Seitenansicht und
Figuren 6 und 7
ein viertes Ausführungsbeispiel mit einem ebenfalls als geschlitztes Rohrstück ausgebildeten inneren Kontaktbereich.
Several exemplary embodiments of contact arrangements designed according to the invention are shown in FIGS. 1 to 7. It shows
Figure 1
1 shows a first exemplary embodiment of a contact arrangement in which the inner contact region is formed by a shell-shaped contact body,
Figure 2
2 shows a top view of a contact arrangement according to FIG. 1,
Figure 3
2 shows a second exemplary embodiment of a contact arrangement with an inner contact region designed as a hollow truncated cone,
Figure 4
A third embodiment with an inner contact area designed as a slotted tube piece,
Figure 5
a schematic representation of the inner contact area according to Figure 4 in side view
Figures 6 and 7
a fourth embodiment with an inner contact area also formed as a slotted tube piece.

Die Kontaktanordnung gemäß Figur 1 besteht aus einem oberen Kontakt 1 und einem unteren Kontakt 2, die längs einer Achse A mit einander zugewandten Kontaktflächen einander axial zugeordnet sind. Der eine Kontakt ist dabei - in nicht näher dargestellter, aber bekannter Weise - axial bewegbar. Jeder der beiden Kontakte 1 und 2 ist mit einer Stromzuführung 3 bzw. 4 versehen.The contact arrangement according to FIG. 1 consists of an upper one Contact 1 and a lower contact 2 along an axis A with mutually facing contact surfaces axially assigned to each other are. One contact is there - not closer shown, but known way - axially movable. Everyone of the two contacts 1 and 2 is with a power supply 3 or 4 provided.

Gemäß Figur 2 ist jeder Kontakt als sogenannter "Spiralkontakt" gemäß der europäischen Patentschrift 0 532 513 B1 ausgebildet, wobei jeder Schlitz 5 aus zwei Abschnitten besteht, von denen der erste Abschnitt parallel zu einer an den Umfang einer kreisförmigen Ausnehmung 6 gelegten Tangente verläuft und von denen der zweite Abschnitt aus einer Bohrung besteht, die im Bereich des inneren Endes des ersten Abschnittes die Kontaktfläche zwischen dem ersten Abschnitt und der kreisförmigen Ausnehmung 6 durchbricht. Der außerhalb der Ausnehmung 6 liegende Bereich des Kontaktes bildet einen äußeren Kontaktbereich 7, der für das Ausschalten von Kurzschlußströmen vorgesehen ist und als Lauffläche für einen rotierenden Lichtbogen dient.According to FIG. 2, each contact is a so-called "spiral contact" trained according to European patent 0 532 513 B1, each slot 5 consists of two sections, of which the first section runs parallel to one to the circumference a circular recess 6 tangent and the second section of which consists of a hole, those in the area of the inner end of the first section Contact area between the first section and the circular Recess 6 breaks through. The outside of the recess 6 lying area of the contact forms an outer contact area 7, for switching off short-circuit currents is provided and as a tread for a rotating Arc serves.

Die Ausnehmung 6 ist so tief ausgeführt, daß sie einen zusätzlichen Kontaktkörper 8 aufnehmen kann, der einen inneren Kontaktbereich 9 bildet. Dieser innere Kontaktbereich 9, der für das Schalten von Betriebsströmen vorgesehen ist, überragt den äußeren, konzentrisch zum inneren Kontaktbereich angeordneten Kontaktbereich 7 axial um eine gewisse Länge a, die beispielsweise 2 mm beträgt.The recess 6 is so deep that it has an additional Contact body 8 can accommodate an inner Contact area 9 forms. This inner contact area 9, the is intended for switching operating currents the outer, arranged concentrically to the inner contact area Contact area 7 axially by a certain length a for example 2 mm.

Gemäß Figur 1 und 2 weist der Kontaktkörper 8 die Form einer flachen, konischen Schale auf, deren Schalenwand in axialer Richtung mehrfach geschlitzt ist. Durch diese Schlitzung 12 sind mehrere Kontakt-Teilbereiche 10 gebildet. Der mit dem Kontaktstück 1 bzw. 2 verlötete Boden des schalenförmigen Kontaktkörpers 8 ist nicht geschlitzt, so daß durch die Schlitzung mehrere gegen die Achse A der Kontaktanordnung geneigte, federnde Kontaktzungen 11 gebildet sind, deren freies Ende jeweils einen Kontakt-Teilbereich 10 bildet.According to Figures 1 and 2, the contact body 8 has the shape of a flat, conical shell, the shell wall in axial Direction is slit several times. Through this slit 12th a plurality of contact subregions 10 are formed. The one with the Contact piece 1 or 2 soldered bottom of the bowl-shaped Contact body 8 is not slotted, so that by the Slitting several inclined against the axis A of the contact arrangement, resilient contact tongues 11 are formed, the free Each end forms a contact portion 10.

Bei der Kontaktanordnung gemäß Figur 3 ist der den inneren Kontaktbereich bildende Kontaktkörper 13 als flacher, hohler Kegelstumpf ausgebildet, dessen Mantel mehrfach axial geschlitzt ist. Diese Schlitzung geht jedoch nicht bis zur Basis des Kegelstumpfes, um den Kontaktkörper als ganzes mit dem jeweiligen Kontaktstück verlöten zu können. 3 is the inner one Contact area forming contact area 13 as a flat, hollow Truncated cone formed, the shell of which is axially slit several times is. However, this slit does not go to the base of the truncated cone to the contact body as a whole to be able to solder the respective contact piece.

Bei dem Ausführungsbeispiel gemäß Figur 4 ist in die Ausnehmung 6 der Kontakte 1 und 2 als Kontaktkörper für den inneren Kontaktbereich ein Hohlzylinder in Form eines Rohrstückes 14 verwendet, der gemäß Figur 5 mit schräg zur Achse der Kontaktanordnung verlaufenden Schlitzen 15 versehen ist, wodurch federnde Kontaktzungen 16 gebildet sind. Am oberen Kontakt 1 ist innerhalb des Rohrstückes 14 zusätzlich ein Kontaktstück 17 angeordnet, das im geschlossenen Zustand der Kontakte 1 und 2 eine mechanische Auflage bildet. Bei Betriebsströmen führt dieses Kontaktstück auch den Strom, wodurch sich geringste Kontaktwiderstände erzielen lassen. Im Fall von Kurzschlußströmen übernehmen bei beginnender Abhebung des zusätzlichen Kontaktstückes 17, d.h. bei geringfügigem Anstieg des Kontaktwiderstandes, die federnden Kontaktbereiche des rohrstückartigen Kontaktkörpers 14 die Stromführung und verhindern so ein vollständiges Abheben und Verschweißen des Kontaktsystems.In the embodiment shown in Figure 4 is in the recess 6 of contacts 1 and 2 as contact bodies for the inner Contact area a hollow cylinder in the form of a pipe section 14 used, according to Figure 5 with oblique to the axis of the contact arrangement extending slots 15 is provided, whereby resilient contact tongues 16 are formed. At the top contact 1 is a contact piece within the pipe section 14 17 arranged, the 1 and 2 forms a mechanical support. With operating currents this contact piece also carries the current, which results in the least Let contact resistances be achieved. In the case of short-circuit currents take over at the beginning of the withdrawal of the additional Contact piece 17, i.e. with a slight increase in Contact resistance, the resilient contact areas of the tubular Contact body 14 and prevent current flow such a complete lifting and welding of the contact system.

Das Ausführungsbeispiel gemäß den Figuren 6 und 7 zeigt einen Topfkontakt 18, dessen geschlitzte Wandung am Topfrand mit einer ringförmigen Kontaktscheibe 19 abgedeckt ist, wobei diese Kontaktscheibe den äußeren Kontaktbereich des Kontaktes bildet. Innerhalb des Topfkontaktes ist ein Kontakkörper 20 angeordnet, der ähnlich dem Kontaktkörper 14 gemäß den Figuren 4 und 5 ausgebildet ist und aus einem Rohrstück besteht, dessen Wandung mit mehreren schräg verlaufenden Schlitzen 21 versehen ist. Der Kontaktkörper 20, der den inneren Kontaktbereich des Topfkontaktes 18 bildet, überragt die Kontaktscheibe 19 axial um die Länge b, die etwa 2 mm beträgt.The exemplary embodiment according to FIGS. 6 and 7 shows one Pot contact 18, the slotted wall at the edge of the pot with an annular contact disc 19 is covered, wherein this contact disk the outer contact area of the contact forms. There is a contact body 20 within the pot contact arranged, which is similar to the contact body 14 according to the figures 4 and 5 is formed and consists of a tube piece, the wall of which has a plurality of sloping slots 21 is provided. The contact body 20, the inner contact area of the pot contact 18 forms, projects above the contact disk 19 axially by the length b, which is approximately 2 mm.

Claims (6)

  1. Contact arrangement for a vacuum interrupter, comprising two contacts (1.2) which can be moved axially relative to one another and have mutually facing contact surfaces,
    each contact having an inner contact region (9), provided for switching operating currents, and an outer contact region (7), which surrounds the inner contact region concentrically, is provided for interrupting short-circuit currents and serves as running surface for a rotating arc,
    and the inner contact region (9) projecting axially over the outer contact region (7),
    characterized in that the inner contact region (9) comprises a plurality of contact subregions (10) arranged next to one another on a divided circle, each contact subregion being formed by the free end of a resilient contact tongue (11) inclined relative to the axis (A) of the contact arrangement.
  2. Contact arrangement according to Patent Claim 1,
    characterized in that the inner contact region comprises a flat, conical shell (8) whose shell wall is multiply slit in an axial fashion.
  3. Contact arrangement according to Patent Claim 1,
    characterized in that the inner contact region comprises a flat, hollow conical frustum (13) whose lateral surface is multiply slit in an axial fashion.
  4. Contact arrangement according to Patent Claim 1,
    characterized in that the inner contact region comprises a tube length (14) whose wall is provided with a plurality of obliquely running slits (15).
  5. Contact arrangement according to Patent Claims 1 to 4, characterized in that the outer contact region (7) comprises the arms of a spiral contact (1,2).
  6. Contact arrangement according to Patent Claims 1 to 4, characterized in that the outer contact region comprises the contact surface (19) of a cup-shaped contact (18).
EP00958175A 1999-07-21 2000-07-20 Contact arrangement for a vacuum interrupter Expired - Lifetime EP1198812B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19934909A DE19934909C1 (en) 1999-07-21 1999-07-21 Contact arrangement for a vacuum interrupter
DE19934909 1999-07-21
PCT/DE2000/002443 WO2001008186A1 (en) 1999-07-21 2000-07-20 Contact arrangement for a vacuum interrupter

Publications (2)

Publication Number Publication Date
EP1198812A1 EP1198812A1 (en) 2002-04-24
EP1198812B1 true EP1198812B1 (en) 2003-05-02

Family

ID=7916020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00958175A Expired - Lifetime EP1198812B1 (en) 1999-07-21 2000-07-20 Contact arrangement for a vacuum interrupter

Country Status (5)

Country Link
US (1) US6674039B1 (en)
EP (1) EP1198812B1 (en)
JP (1) JP2003505841A (en)
DE (2) DE19934909C1 (en)
WO (1) WO2001008186A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1981354B (en) * 2004-07-05 2011-10-26 Abb研究有限公司 Vacuum interrupter and contact arrangement for a vacuum interrupter
CN101552153B (en) * 2009-05-15 2011-07-27 宁波晟光电气有限公司 A vacuum arc-extinguishing chamber contact
EP2551878A1 (en) * 2011-07-23 2013-01-30 ABB Technology AG Contact assembly for a vacuum circuit breaker
US9685280B2 (en) 2014-04-11 2017-06-20 S&C Electric Company Switchgear operating mechanism
US9679708B2 (en) 2014-04-11 2017-06-13 S&C Electric Company Circuit interrupters with masses in contact spring assemblies
DE102015203693A1 (en) * 2015-03-02 2016-09-08 Siemens Aktiengesellschaft Method for producing vacuum switching contacts
DE102015203830A1 (en) * 2015-03-04 2016-09-08 Siemens Aktiengesellschaft Method for producing vacuum switching contacts
US9552941B1 (en) * 2015-08-24 2017-01-24 Eaton Corporation Vacuum switching apparatus and electrical contact therefor
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
CN110120320B (en) * 2019-06-06 2021-06-04 四川大学 Novel longitudinal magnetic contact system with embedded magnetic gathering ring and reverse contact cup
CN111863507B (en) * 2020-06-18 2022-12-30 平高集团有限公司 Contact and fracture structure for high-speed mechanical switch

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158719A (en) * 1962-04-03 1964-11-24 Gen Electric Contact structure for an electric circuit interrupter
GB1145151A (en) * 1966-01-05 1969-03-12 Ass Elect Ind Improvements in or relating to vacuum switches
US3576960A (en) * 1968-03-08 1971-05-04 Gen Electric Flange fastening means for a contact button for a vacuum-type circuit interrupter
US3869589A (en) * 1972-05-03 1975-03-04 Westinghouse Electric Corp Vacuum interrupter including contacts having improved weld break characteristics
US3836740A (en) * 1972-05-03 1974-09-17 Westinghouse Electric Corp Vacuum type circuit interrupter having improved contacts
US3809836A (en) * 1972-12-21 1974-05-07 Gen Electric Vacuum-type electric circuit interrupter
DE2912823A1 (en) * 1979-03-30 1980-10-09 Siemens Ag Vacuum switch contact set with coaxial contact pots - has zone of reduced conductivity, between contact ring and contact carrier, which may be filled with ferromagnetic or insulating insert
DE3009925C2 (en) * 1980-03-14 1984-03-08 Siemens AG, 1000 Berlin und 8000 München Contact piece for an electrical vacuum switch
DE3415743A1 (en) * 1984-04-26 1985-10-31 Siemens AG, 1000 Berlin und 8000 München CONTACT ARRANGEMENT FOR A VACUUM SWITCH
DE3434417A1 (en) * 1984-09-19 1986-03-20 Siemens AG, 1000 Berlin und 8000 München Contact arrangement for vacuum switches
DE3828556C1 (en) * 1988-08-23 1990-03-15 Sachsenwerk Ag, 8400 Regensburg, De Contact arrangement for a vacuum switch
FR2650434B1 (en) * 1989-07-26 1995-11-24 Merlin Gerin LOW VOLTAGE CIRCUIT BREAKER WITH MULTIPLE CONTACTS AND HIGH CURRENTS
EP0532513B1 (en) * 1990-06-07 1995-02-08 Siemens Aktiengesellschaft Contact assembly for a vacuum switch tube
DE4130230A1 (en) 1991-09-09 1993-03-11 Slamecka Ernst Vacuum switch contact system for high voltage network - has built in electromagnetic field generator coated around contact region with arc aperture in housing
DE9401655U1 (en) * 1993-06-18 1994-11-03 Siemens AG, 80333 München Vacuum interrupter with ring-shaped insulator

Also Published As

Publication number Publication date
JP2003505841A (en) 2003-02-12
DE50001992D1 (en) 2003-06-05
DE19934909C1 (en) 2001-06-13
EP1198812A1 (en) 2002-04-24
WO2001008186A1 (en) 2001-02-01
US6674039B1 (en) 2004-01-06

Similar Documents

Publication Publication Date Title
EP0082801B1 (en) Vacuum switch with a ring to create an axial magnetic field
DE4002933C2 (en)
EP1198812B1 (en) Contact arrangement for a vacuum interrupter
EP1766646B1 (en) Vacuum interrupter and contact arrangement for a vacuum interrupter
DE3245609A1 (en) VACUUM PROTECTION SWITCH
DE112010005149B4 (en) VACUUM SWITCH
DE1640256B2 (en) VACUUM SWITCH
EP0381843A2 (en) Switch contact
DE2946800A1 (en) VACUUM INTERRUPTER
DE102004031887B3 (en) Switch contact for vacuum interrupters
DE1236053B (en) Electrical switch, in particular vacuum switch
DE2048506B2 (en) VACUUM SWITCH
DE112010005162T5 (en) VACUUM CIRCUIT BREAKER
EP0951038B2 (en) Arcing contact arrangement
EP0568166B1 (en) Vacuum switch tube
DE69526631T2 (en) Electric vacuum switch
DE69508680T2 (en) High voltage switch
EP1344237B1 (en) Contact arrangement for a vacuum switch tube
EP0225562B1 (en) Vacuum-switching tubes
DE2815059C2 (en) Contact arrangement for low-voltage vacuum contactors
DE19855413C2 (en) Axial magnetic field contact arrangement for vacuum switches
DE19957228B4 (en) Contact arrangement for a vacuum interrupter chamber
DE3411784A1 (en) CONTACTS FOR A VACUUM SWITCH
DE2822510B2 (en) Contact arrangement for vacuum circuit breakers
DE3915519A1 (en) Axial magnetic field contact arrangement for vacuum switches

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20010917

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50001992

Country of ref document: DE

Date of ref document: 20030605

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

Ref document number: 1198812E

Country of ref document: IE

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040203

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080919

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080715

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080710

Year of fee payment: 9

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090720

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100202