EP0045072B1 - Vacuum switch - Google Patents

Vacuum switch Download PDF

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Publication number
EP0045072B1
EP0045072B1 EP19810105875 EP81105875A EP0045072B1 EP 0045072 B1 EP0045072 B1 EP 0045072B1 EP 19810105875 EP19810105875 EP 19810105875 EP 81105875 A EP81105875 A EP 81105875A EP 0045072 B1 EP0045072 B1 EP 0045072B1
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EP
European Patent Office
Prior art keywords
contact
vacuum switch
release chamber
contacts
fixed relative
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
EP19810105875
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German (de)
French (fr)
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EP0045072A1 (en
Inventor
Wojciech Platak
Wojciech Roszuk
Zbigniew Wierzchnieswki
Original Assignee
Osrodek Badawczo-Rozwojowy Aparatury Manewrowej ORAM
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.)
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Publication date
Application filed by Osrodek Badawczo-Rozwojowy Aparatury Manewrowej ORAM filed Critical Osrodek Badawczo-Rozwojowy Aparatury Manewrowej ORAM
Publication of EP0045072A1 publication Critical patent/EP0045072A1/en
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Publication of EP0045072B1 publication Critical patent/EP0045072B1/en
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    • 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

Definitions

  • the invention relates to a vacuum switch with two protruding into a quenching chamber, which are connected outside the quenching chamber via flexible conductors with electrical terminals, one of which has a fixed position with respect to the quenching chamber and of which the other contact via an actuating mechanism coupled to a switching drive relative to
  • the quenching chamber can be moved between an open position and a closed position of the contacts and can be pivoted with the quenching chamber and the contact fixed to the quenching chamber.
  • Such a vacuum switch is known from the catalog vacuum protection SV-7 from EMA-Elester, printed in Tru in 1976.
  • the ends of the bolt-shaped contacts located outside the arcing chamber are connected to the actuating mechanism via a ball joint and to the switch housing via a cardan joint, so that the arcing chamber forms a pendulum construction with the contacts.
  • the friction present in the joints leads to games over a longer period of time, which impair the opening width and the simultaneous establishment of contact.
  • the structure of the pendulum construction is complicated and expensive.
  • a circuit breaker is also known, in which the contacts are located in a tank filled with oil and the contact is made via a complicated cable and linkage drive. Irrespective of its complex design, such a circuit breaker is not suitable for use as a contactor with a high frequency of shadows.
  • the object on which the invention is based is to design the vacuum switch of the type mentioned at the outset with structurally simple means for the reliable execution of high switching cycles.
  • Ropes or chains are advantageously used as traction means, while threaded sleeves are advantageously used as tendons.
  • the vacuum switch according to the invention has the advantage that, due to the traction means used, its construction is extremely simple and, by excluding play, the reliable operation is guaranteed even with a large number of switching changes.
  • the vacuum switch shown in the drawing only with its essential parts has a vacuum quenching chamber 1 with a first pin-shaped contact 2 and a second pin-shaped contact 3, the contact surfaces of which are located in the vacuum quenching chamber 1 and the free ends of which are led out of the vacuum quenching chamber 1.
  • a first pin-shaped contact 2 At the free end of the first pin-shaped contact 2, one end of a first pulling cable 4 and one end of a first flexible conductor 6 are fastened, which lead to an electrical terminal (not shown).
  • the other end of the pull cable 4 is attached to a threaded sleeve 7 which is connected via a nut 9 to a movable part 8 of an actuating mechanism of the vacuum switch.
  • a hollow cylindrical intermediate element 10 is attached.
  • the second pin-shaped contact 3 has an outer conductive element 17, on which a second flexible conductor 16 is fixed with a nut 18 placed on the intermediate element 10.
  • the second conductor 16 is connected to a terminal, not shown.
  • a roller 11 is held, in which one end of a second traction cable 12 is fastened, which extends through an opening in the bottom of the intermediate element 10 and is fixed with its other end in a threaded sleeve 13 which is attached to an immovable part 14 of the vacuum switch is held with two nuts 15.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Mechanisms For Operating Contacts (AREA)

Description

Die Erfindung betrifft einen Vakuumschalter mit zwei in eine Löschkammer ragenden Kontakten, die ausserhalb der Löschkammer über flexible Leiter mit elektrischen Klemmen verbunden sind, von denen der eine Kontakt bezüglich der Löschkammer lagefest und von denen der andere Kontakt über einen mit einem Schaltantrieb gekoppelten Betätigungsmechanismus relativ zur Löschkammer zwischen einer Offenstellung und einer Schliessstellung der Kontakte verschiebbar und mit der Löschkammer und dem löschkammerfesten Kontakt verschwenkbar ist.The invention relates to a vacuum switch with two protruding into a quenching chamber, which are connected outside the quenching chamber via flexible conductors with electrical terminals, one of which has a fixed position with respect to the quenching chamber and of which the other contact via an actuating mechanism coupled to a switching drive relative to The quenching chamber can be moved between an open position and a closed position of the contacts and can be pivoted with the quenching chamber and the contact fixed to the quenching chamber.

Ein derartiger Vakuumschalter ist aus dem Katalog Vakuumschutz SV-7 der Firma EMA-Elester, gedruckt in Polen 1976, bekannt. Bei diesem Vakuumschalter sind die ausserhalb der Löschkammer befindlichen Enden der bolzenförmigen Kontakte mit dem Betätigungsmechanismus über ein Kugelgelenk und mit dem Schaltergehäuse über ein Kardangelenk verbunden, so dass die Löschkammer mit den Kontakten eine Pendelkonstruktion bildet. Die in den Gelenken vorhandene Reibung führt bei längerer Einsatzzeit zu Spielen, die die Öffnungsweite und die gleichzeitige Kontaktherstellung beeinträchtigen. Ausserdem ist der Aufbau der Pendelkonstruktion kompliziert und aufwendig.Such a vacuum switch is known from the catalog vacuum protection SV-7 from EMA-Elester, printed in Poland in 1976. In this vacuum switch, the ends of the bolt-shaped contacts located outside the arcing chamber are connected to the actuating mechanism via a ball joint and to the switch housing via a cardan joint, so that the arcing chamber forms a pendulum construction with the contacts. The friction present in the joints leads to games over a longer period of time, which impair the opening width and the simultaneous establishment of contact. In addition, the structure of the pendulum construction is complicated and expensive.

Aus der US-A 2810808 ist ausserdem ein Leistungsschalter bekannt, bei welchem sich die Kontake in einem mit Öl gefüllten Tank befinden und die Kontaktführung über einen komplizierten Seil- und Gestängeantrieb erfolgt. Unabhängig von seiner aufwendigen Bauweise ist ein solcher Leistungsschalter für den Einsatz als Schütz mit hoher Schatthäufigkeit nicht geeignet.From US-A 2810808 a circuit breaker is also known, in which the contacts are located in a tank filled with oil and the contact is made via a complicated cable and linkage drive. Irrespective of its complex design, such a circuit breaker is not suitable for use as a contactor with a high frequency of shadows.

Die der Erfindung zugrundeliegende Aufgabe besteht darin, den Vakuumschalter der eingangs genannten Art mit konstruktiv einfachen Mitteln für die betriebssichere Durchführung hoher Schaltwechselzahlen auszubilden.The object on which the invention is based is to design the vacuum switch of the type mentioned at the outset with structurally simple means for the reliable execution of high switching cycles.

Diese Aufgabe wird bei dem Vakuumschalter der eingangs genannten Art dadurch gelöst, dass der verschiebbare Kontakt über ein erstes Zugmittel und ein Spannglied an einem Teil des Betätigungsmechanismus festgelegt ist und dass der löschkammerfeste Kontakt über ein zweites Zugmittel und ein Spannglied mit einem schalterfesten Teil verbunden ist.This object is achieved with the vacuum switch of the type mentioned at the outset in that the displaceable contact is fixed to a part of the actuating mechanism via a first traction means and a tensioning member and in that the contact chamber-fixed contact is connected to a part which is fixed to the switch via a second traction means and a tensioning member.

Dabei werden als Zugmittel vorteilhafterweise Seile oder Ketten verwendet, während als Spannglieder vorteilhafterweise Gewindehülsen zum Einsatz kommen.Ropes or chains are advantageously used as traction means, while threaded sleeves are advantageously used as tendons.

Der erfindungsgemässe Vakuumschalter hat den Vorteil, dass aufgrund der eingesetzten Zugmittel sein Aufbau äusserst einfach ist und durch Ausschluss eines Spiels auch bei einer hohen Anzahl von Schaltwechseln die betriebssichere Funktion gewährleistet bleibt.The vacuum switch according to the invention has the advantage that, due to the traction means used, its construction is extremely simple and, by excluding play, the reliable operation is guaranteed even with a large number of switching changes.

Anhand der Zeichnung, die schematisch ein Ausführungsbeispiel eines Vakuumschalters zeigt, wird die Erfindung näher erläutert.The invention is explained in more detail with the aid of the drawing, which schematically shows an exemplary embodiment of a vacuum switch.

Der in der Zeichnung nur mit seinen wesentlichen Teilen gezeigte Vakuumschalter hat eine Vakuumlöschkammer 1 mit einem ersten bolzenförmigen Kontakt 2 und einem zweiten bolzenförmigen Kontakt 3, deren Kontaktflächen sich in der Vakuumlöschkammer 1 befinden und deren freie Enden aus der Vakuumlöschkammer 1 herausgeführt sind. An dem freien Ende des ersten bolzenförmigen Kontakts 2 ist das eine Ende eines ersten Zugseils 4 sowie das eine Ende eines ersten flexiblen Leiters 6 befestigt, der zu einer nicht gezeigten elektrischen Klemme geführt ist. Das andere Ende des Zugseils 4 ist an einer Gewindehülse 7 befestigt, die über eine Mutter 9 mit einem beweglichen Teil 8 eines Betätigungsmechanismus des Vakuumschalters verbunden ist.The vacuum switch shown in the drawing only with its essential parts has a vacuum quenching chamber 1 with a first pin-shaped contact 2 and a second pin-shaped contact 3, the contact surfaces of which are located in the vacuum quenching chamber 1 and the free ends of which are led out of the vacuum quenching chamber 1. At the free end of the first pin-shaped contact 2, one end of a first pulling cable 4 and one end of a first flexible conductor 6 are fastened, which lead to an electrical terminal (not shown). The other end of the pull cable 4 is attached to a threaded sleeve 7 which is connected via a nut 9 to a movable part 8 of an actuating mechanism of the vacuum switch.

Am freien Ende des zweiten bolzenförmigen Kontakts 3 ist ein hohlzylindrisches Zwischenelement 10 befestigt. Der zweite bolzenförmige Kontakt 3 hat ein äusseres leitendes Element 17, an dem ein zweiter flexibler Leiter 16 mit einer auf das Zwischenelement 10 aufgesetzten Mutter 18 festgelegt ist. Der zweite Leiter 16 ist mit einer nicht gezeigten Klemme verbunden. In der Bodenfläche des hohlzylindrischen Zwischenelements 10 ist eine Rolle 11 gehalten, in der das eine Ende eines zweiten Zugseils 12 befestigt ist, das sich durch eine Öffnung im Boden des Zwischenelements 10 erstreckt und mit seinem anderen Ende in einer Gewindehülse 13 festgelegt ist, die an einem unbeweglichen Teil 14 des Vakuumschalters mit zwei Muttern 15 gehalten ist.At the free end of the second pin-shaped contact 3, a hollow cylindrical intermediate element 10 is attached. The second pin-shaped contact 3 has an outer conductive element 17, on which a second flexible conductor 16 is fixed with a nut 18 placed on the intermediate element 10. The second conductor 16 is connected to a terminal, not shown. In the bottom surface of the hollow cylindrical intermediate element 10, a roller 11 is held, in which one end of a second traction cable 12 is fastened, which extends through an opening in the bottom of the intermediate element 10 and is fixed with its other end in a threaded sleeve 13 which is attached to an immovable part 14 of the vacuum switch is held with two nuts 15.

Wenn der bewegliche Teil 8 des Vakuumschalters durch einen Antrieb bewegt wird, bewirkt dies eine Verlagerung des Gelenkpunktes des Teils 8 mit der gewünschten Hülse 7 einerseits in der der Schliess- und Öffnungsbewegung der Kontakte des Vakuumschalters entsprechenden Richtung und andererseits in einer dazu senkrechten Richtung, was über die Zugseile 4 und 12 zu geringen Winkelausschlägen der Vakuumlöschkammer 1 führt, ohne dadurch die axiale Ausrichtung der Vakuumlöschkammer 1 zu der Wirkungslinie der Kräfte für das Öffnen und Schliessen der Kontakte 2 und 3 zu beeinträchtigen.If the movable part 8 of the vacuum switch is moved by a drive, this causes a displacement of the hinge point of the part 8 with the desired sleeve 7 on the one hand in the direction corresponding to the closing and opening movement of the contacts of the vacuum switch and on the other hand in a direction perpendicular thereto, what leads to small angular deflections of the vacuum quenching chamber 1 via the pull cables 4 and 12, without thereby impairing the axial alignment of the vacuum quenching chamber 1 to the line of action of the forces for opening and closing the contacts 2 and 3.

Claims (3)

1. Vacuum switch with two contacts (2, 3) projecting into a release chamber (1), which are connected via flexible leads (6, 16) to electrical terminals outside the release chamber, of which one contact (3) is fixed relative to the release chamber (1) and the other contact (2) is displaceable relative to the release chamber (1) between an open position and a closed position of the contacts (2, 3) and is pivotable relative to the contact (3) which is fixed relative to the release chamber by means of an actuating mechanism (8) coupled to a switching device, characterised in that the displacable contact (2) is fastened to a portion of the actuating mechanism (8) by a first pulling means (4) and a tensioning member (7) and in that the contact (3) that is fixed relative to the release chamber is connected to a part (14) which is fixed relative to the switch by means of a second pulling means (12) and a tensioning means (13).
2. Vacuum switch according to claim 1, characterised in that the pulling means (4, 12) are cables or chains.
3. Vacuum switch according to claim 1 or 2, characterised in that the tensioning means (7, 13) are winding means.
EP19810105875 1980-07-25 1981-07-24 Vacuum switch Expired EP0045072B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL22586380A PL127426B1 (en) 1980-07-25 1980-07-25 Suspension arrangement for a vacuum-type extinguishing chamber
PL225863 1980-07-25

Publications (2)

Publication Number Publication Date
EP0045072A1 EP0045072A1 (en) 1982-02-03
EP0045072B1 true EP0045072B1 (en) 1985-02-06

Family

ID=20004388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810105875 Expired EP0045072B1 (en) 1980-07-25 1981-07-24 Vacuum switch

Country Status (5)

Country Link
EP (1) EP0045072B1 (en)
CS (1) CS254957B2 (en)
DD (1) DD206448A5 (en)
DE (1) DE3168771D1 (en)
PL (1) PL127426B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012012640U1 (en) 2012-12-21 2013-10-01 Methode Electronics Malta Ltd. Tripping device for a contactor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021205821A1 (en) 2020-09-14 2022-03-17 Raimund Buhl Arc-proof switching device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE534772A (en) * 1954-01-11
US2810808A (en) * 1955-01-25 1957-10-22 Gen Electric Cable type operating mechanism for an electric circuit breaker
FR1247450A (en) * 1959-10-22 1960-12-02 Gardy Particip App Method of mounting high voltage circuit breaker poles and circuit breaker poles allowing the implementation
DE2004521A1 (en) * 1969-03-06 1970-09-24 VEB Transformatorenwerk Karl Liebknecht, Berlin-Oberschöneweide Patent system, East Berlin WP138417 high voltage switch
DE2828671A1 (en) * 1978-06-30 1980-01-10 Calor Emag Elektrizitaets Ag Highly evacuated quenching chamber for vacuum switch - has movable components assembled in sylphon bellows, and can be inserted into evacuated chamber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012012640U1 (en) 2012-12-21 2013-10-01 Methode Electronics Malta Ltd. Tripping device for a contactor
DE102012113057A1 (en) 2012-12-21 2014-06-26 Methode Electronics Malta Ltd. Tripping device for a contactor
DE102012113057B4 (en) * 2012-12-21 2018-02-15 Methode Electronics Malta Ltd. Tripping device for a contactor

Also Published As

Publication number Publication date
PL127426B1 (en) 1983-10-31
DE3168771D1 (en) 1985-03-21
DD206448A5 (en) 1984-01-25
PL225863A2 (en) 1981-06-05
EP0045072A1 (en) 1982-02-03
CS254957B2 (en) 1988-02-15
CS565281A2 (en) 1987-07-16

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