WO1995012888A1 - Switch - Google Patents

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Publication number
WO1995012888A1
WO1995012888A1 PCT/AT1994/000117 AT9400117W WO9512888A1 WO 1995012888 A1 WO1995012888 A1 WO 1995012888A1 AT 9400117 W AT9400117 W AT 9400117W WO 9512888 A1 WO9512888 A1 WO 9512888A1
Authority
WO
WIPO (PCT)
Prior art keywords
plates
contact
switch
arc
strip
Prior art date
Application number
PCT/AT1994/000117
Other languages
German (de)
French (fr)
Inventor
Paul Kadan
Original Assignee
Felten & Guilleaume Austria 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 Felten & Guilleaume Austria Ag filed Critical Felten & Guilleaume Austria Ag
Priority to EP94923585A priority Critical patent/EP0727088B1/en
Priority to AT94923585T priority patent/ATE156298T1/en
Priority to PL94314227A priority patent/PL174603B1/en
Priority to AU73771/94A priority patent/AU676934B2/en
Priority to DE59403580T priority patent/DE59403580D1/en
Publication of WO1995012888A1 publication Critical patent/WO1995012888A1/en
Priority to NO961789A priority patent/NO307907B1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/346—Details concerning the arc formation chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber

Definitions

  • the invention relates to a switch, in particular a self-switch, with the features of the introductory part of independent claim 1.
  • the aim of the invention is to improve the discharge of the ionized gases to the deion plates in the arc quenching chamber. ser.
  • the space lying between the plates and delimited by the contact strips is connected to the spaces lying between the outer sides of the plates and the inner sides of the walls of the housing adjacent to them through the openings lying according to the invention in the interior of the plates .
  • the inventive design of the plates which delimit the space between the fixed contact piece and the movable contact in the OFF position, with at least one opening, allows gases produced in circuits, in particular in the case of short-circuit cutoffs, to flow back to the contact point by passing them through which step at least one opening in the plates and flow back between the plates and the housing walls to the contact point.
  • the gas pressure in the region of the front of the arc which hinders the arc running, that is to say the movement of the arc to the deion sheets in the arc quenching chamber, is reduced.
  • the openings in the invention are arranged within the plates. That the advantageous effect of the openings in the plates can be optimally combined with the actual function of the plates (protection of the housing). Furthermore, the position of the openings in the invention can be adapted to the conditions of the switch (for example the design of the contacts).
  • the gassing effect that occurs when an arc is applied which is particularly strong in the case of plates made of synthetic material, the following further effect results from the at least one opening: in the area of at least one Opening in the plates, the gassing effect is smaller due to the reduced plate area than in the rest of the plate. This results in a relatively stronger gassing effect of the plates in the area lying at the contact point, so that the arc is additionally accelerated by the relatively increased gas pressure acting in the back of the arc.
  • the at least one opening in the plates is provided in the region of a horn in the contact strip which carries the stationary contact piece.
  • Fig. 1 shows schematically and in side view the part of a circuit breaker with a fixed contact piece, movable contact and a plate and
  • Fig. 2 shows the area of Fig. 1 in section with the associated housing parts.
  • the invention can be used with particular advantage in the case of any switch which is designed for higher currents, but in particular for circuit breakers such as circuit breakers which have to switch off in the event of a short circuit.
  • the fixed contact piece is made by one Contact strips 1 worn, which is shaped into a horn 6 (U-shaped loop). Opposite the contact piece 5 and the horn 6 there is provided a conductor streak 3 which serves as a contact for the movable contact 2 when it is in the OFF position shown in FIG. 2.
  • the space 8 between the contact strip 1 and the conductor strip 3 is delimited on both sides by plates 7.
  • the plates 7 are arranged in the housing which accommodates the self-switch in such a way that a space 11 remains free between the inwardly facing surfaces 9 of the housing walls 10 and the outwardly facing surfaces 12 of the plates 7, as shown in FIG. 2 is shown.
  • each of the two plates 7 there are openings 4, e.g. in the form of holes. At least one opening 4 is provided for each plate 7, the arrangement shown in FIG. 1 of three openings 4, for example in the corners of an equilateral triangle, on the side of the horn 6 of the contact strip 1 facing away from the contact piece 5 is particularly favorable and is therefore preferred according to the invention.
  • the openings 4 in the plates 7 result in the following advantageous effect when the (short circuit) is switched off (lifting the movable contact 2 from the fixed contact 5): through the openings 4, the gases which are produced when the (short circuit) is switched off are one additional possibility for backflow to contact point 5 opens (this is symbolized in FIG. 2 by arrows).
  • the gas pressure in the region of the arc end (front front of the arc) which inhibits the arc running (the dissipation of the (short-circuit) arc to the deion sheets of an arc quenching chamber, not shown) is additionally reduced.
  • the surface of the plates 7 available in the horn 6 area for the gassing effect downsized because there is less material because of the openings 5.
  • a switch has a stationary contact piece 5 which is fastened to a contact strip 1 fixed in the housing of the switch, a movable contact 2 which is pivotably mounted in the housing of the switch and a conductor strip 3 which acts as a stop for the movable contact 2 in its position serves.
  • the space 8 between the contact strip 1 and the conductor strip 3 is delimited by plates 7 on both sides. In the plates 7 three openings 4 are provided, which lead out of the space 8 delimited by the contact strips 1, the conductor strip 3 and the plates 7 into the spaces 11 between the plates 7 and the associated walls 10 of the housing .
  • Arc gases can escape through these openings 4 in the plates 7 and flow back to the contact point, so that the movement of the arc gases to an arc quenching chamber is supported. Furthermore, because of the area of the plates 7 which is reduced in areas through the openings 4, a gas pressure difference between the front and the back of the arc which supports the movement of the arc gases to the arc quenching chamber is formed.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switches With Compound Operations (AREA)
  • Lock And Its Accessories (AREA)
  • Push-Button Switches (AREA)
  • Breakers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Electronic Switches (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

A switch has a fixed contact (5) secured to a contact strip (1) in the switch housing, a movable contact (2) pivoted in the switch housing and a conductor strip (3) which acts as a stop for the movable contact (2) in its OFF position. The space (8) between the contact strip (1) and the conductor strip (3) is bounded on both sides by plates (7). In the plates (7) there are three apertures (4) leading outwards from the space (8) bounded by the contact strip (1), the conductor strip (3) and the plates (7) into the spaces (11) between the plates (7) and the relevant walls (10) of the housing. Arc gases can flow out and back to the contact point through said apertures (4) in the plates (7) so that the movement of the arc gases to an arc quenching chamber is supported. In addition, owing to the local reduction in the area of the plates (7) by the apertures (4), a gas pressure difference is created between the front side and the rear side of the arc which supports the movement of the arc gases to the arc quenching chamber.

Description

Schalterswitch
Die Erfindung betrifft einen Schalter, insbesondere einen Selbstschalter, mit den Merkmalen des einleitenden Teils des unabhängigen Anspruches 1.The invention relates to a switch, in particular a self-switch, with the features of the introductory part of independent claim 1.
Bei bekannten Selbstschaltern wird der Raum zwischen dem orts¬ festen Kontaktstück, das auf einem Kontaktstreifen angeordnet, also von diesem getragen wird, und dem beweglichen Kontakt, der in der AUS-Stellung an einem als Anschlag dienenden Kon¬ taktstreifen anliegt, auf beiden Seiten durch Platten aus Keramik oder einem anderen synthetischen Material abgeschlos¬ sen. Aus diesem Raum gelangen die beim Öffnen der Kontakte (Abheben des beweglichen Kontaktes vom ortsfesten Kontakt- stück) durch den gebildeten Lichtbogen entstehenden, ionisier¬ ten Gase zu einer Lichtbogenlöschkammer, in der eine Licht¬ bogenlöscheinrichtung aus mehreren Deionblechen angeordnet ist, und treten aus dieser durch Austrittsöffnungen aus dem Schaltergehäuse aus.In known automatic switches, the space between the stationary contact piece, which is arranged on a contact strip, that is to say is carried by it, and the movable contact, which in the OFF position rests on a contact strip serving as a stop, is passed through on both sides Plates made of ceramic or another synthetic material. From this space, the ionized gases produced when the contacts open (lifting the movable contact from the stationary contact piece) by the arc formed reach an arc quenching chamber in which an arc quenching device made of several deion sheets is arranged and emerge from it through outlet openings from the switch housing.
Aus der EP-A-251 160 ist ein Selbstschalter mit einer Lösch¬ einrichtung mit den Merkmalen des einleitenden Teils des un¬ abhängigen Anspruches 1 bekannt. Bei diesem bekannten Selbst¬ schalter sind in den Platten zum Rand der Platten hin offene Ausschnitte vorgesehen. Diese bekannten Ausschnitte dienen dazu, den beim Öffnen der Kontaktstücke in der Vorkammer ent¬ stehenden Unterdruck auszugleichen und mit Hilfe des durch die Öffnungen in die Vorkammer eintretenden Gasstromes zur Entio- nisierung beizutragen. Das letztgenannte Merkmal kann durch Verwendung von gasabgebendem Material für die Platten ver¬ stärkt werden.From EP-A-251 160 a self-switch with an extinguishing device with the features of the introductory part of independent claim 1 is known. In this known automatic switch, cutouts which are open towards the edge of the plates are provided in the plates. These known cutouts serve to compensate for the negative pressure which arises when the contact pieces are opened in the prechamber and to contribute to deionization with the aid of the gas flow entering the prechamber through the openings. The latter feature can be reinforced by using gas-emitting material for the plates.
Wesentlich für den Effekt der Lichtbogenlenkung ist, daß die Kontaktstelle unmittelbar seitlich völlig abgedeckt ist, damit die beim Zünden des Lichtbogens entstehende Plasmasäule nicht seitlich abgelenkt wird und dadurch mit Verzögerung zu den Deionblechen gelangt.It is essential for the effect of the arc steering that the contact point is completely covered immediately on the side, so that the plasma column which arises when the arc is ignited is not laterally deflected and thus reaches the deion sheets with a delay.
Ziel der Erfindung ist es, das Ableiten der ionisierten Gase zu den Deionblechen in der Lichtbogenlöschkammer zu verbes- sern .The aim of the invention is to improve the discharge of the ionized gases to the deion plates in the arc quenching chamber. ser.
Erfindungsgemäß wird dies dadurch erreicht, daß bei dem Schalter die Merkmale des kennzeichnenden Teils von Anspruch 1 verwirklicht sind.According to the invention this is achieved in that the features of the characterizing part of claim 1 are realized in the switch.
Bevorzugte und vorteilhafte Ausführungsformen des erfindungs¬ gemäßen Schalters sind Gegenstand der Unteransprüche.Preferred and advantageous embodiments of the switch according to the invention are the subject of the dependent claims.
Bei der Erfindung steht der zwischen den Platten liegende und von den Kontaktstreifen begrenzte Raum mit den zwischen den Außenseiten der Platten und den Innenseiten der diesen benach¬ barten Wänden des Gehäuses liegenden Räumen durch die erfin¬ dungsgemäß im Inneren der Platten liegenden Öffnungen in Ver- bindung.In the invention, the space lying between the plates and delimited by the contact strips is connected to the spaces lying between the outer sides of the plates and the inner sides of the walls of the housing adjacent to them through the openings lying according to the invention in the interior of the plates .
Durch die erfindungsgemäße Ausbildung der Platten, die den Raum zwischen dem ortsfesten Kontaktstück und dem beweglichen Kontakt in der AUS-Stellung begrenzen, mit wenigstens einer Öffnung, können bei Schaltungen, insbesondere bei Kurzschlu߬ abschaltungen entstehende Gase zur Kontaktstelle zurückströ¬ men, indem sie durch die wenigstens eine Öffnung in den Plat¬ ten treten und zwischen den Platten und dem Gehäusewänden zur Kontaktstelle zurückströmen. Dadurch wird der den Lichtbogen- lauf, also die Bewegung des Lichtbogens zu den Deionblechen in der Lichtbogenlöschkammer behindernde Gasdruck im Bereich der Front des Lichtbogens verringert.The inventive design of the plates, which delimit the space between the fixed contact piece and the movable contact in the OFF position, with at least one opening, allows gases produced in circuits, in particular in the case of short-circuit cutoffs, to flow back to the contact point by passing them through which step at least one opening in the plates and flow back between the plates and the housing walls to the contact point. As a result, the gas pressure in the region of the front of the arc, which hinders the arc running, that is to say the movement of the arc to the deion sheets in the arc quenching chamber, is reduced.
Da bei der Erfindung die Öffnungen im Gegensatz zur EP-A- 251 160, wo die Öffnungen zum Rand der Platte hin offen sind, bzw. überhaupt durch Weglassen von Randteilen der Platten gebildet sind, innerhalb der Platten angeordnet sind, ergibt sich der Vorteil, daß die vorteilhafte Wirkung der Öffnungen in den Platten mit der eigentlichen Funktion der Platten (Schutz des Gehäuses) optimal kombiniert werden kann. Weiters kann die Lage der Öffnungen bei der Erfindung an die Gegeben¬ heiten des Schalters (beispielsweise die Ausbildung der Kon¬ takte) angepaßt werden.Since, in contrast to EP-A-251 160, where the openings are open towards the edge of the plate or are formed at all by omitting edge parts of the plates, the openings in the invention are arranged within the plates. that the advantageous effect of the openings in the plates can be optimally combined with the actual function of the plates (protection of the housing). Furthermore, the position of the openings in the invention can be adapted to the conditions of the switch (for example the design of the contacts).
Die bei allen Platten, die zur Begrenzung des Raumes zwischen dem ortsfesten Kontaktstück und dem beweglichen Kontakt ver¬ wendet werden, auftretende gasende Wirkung beim Einwirken eines Lichtbogens, die besonders bei Platten aus synthetischem Material besonders stark ist, ergibt sich durch die wenigstens eine Öffnung folgender, weiterer Effekt: Im Bereich der wenig¬ stens einen Öffnung in den Platten ist die gasende Wirkung durch die verkleinerte Plattenfläche kleiner als im übrigen Bereich der Platte. Dadurch ergibt sich eine relativ stärker gasende Wirkung der Platten in dem an der Kontaktstelle lie- genden Bereich, so daß der Lichtbogen durch den im Lichtbogen¬ rücken wirkenden, relativ erhöhten Gasdruck zusätzlich be¬ schleunigt wird.The one with all plates that limit the space between the stationary contact piece and the movable contact are used, the gassing effect that occurs when an arc is applied, which is particularly strong in the case of plates made of synthetic material, the following further effect results from the at least one opening: in the area of at least one Opening in the plates, the gassing effect is smaller due to the reduced plate area than in the rest of the plate. This results in a relatively stronger gassing effect of the plates in the area lying at the contact point, so that the arc is additionally accelerated by the relatively increased gas pressure acting in the back of the arc.
Insbesondere ist es bei der Erfindung vorteilhaft, wenn die wenigstens eine Öffnung in den Platten im Bereich eines Horns in dem Kontaktstreifen vorgesehen sind, der das ortsfeste Kontaktstück trägt. Die durch die Gasdruckdifferenz auf Grund der gasenden Wirkung der Platten aus synthetischem Material entstehende, den Lichtbogen beschleunigende Wirkung (erhöhter Gasdruck im Lichtbogenerücken) ist dann besonders günstig.In the case of the invention it is particularly advantageous if the at least one opening in the plates is provided in the region of a horn in the contact strip which carries the stationary contact piece. The effect which arises due to the gas pressure difference due to the gassing effect of the plates made of synthetic material and accelerates the arc (increased gas pressure in the back of the arc) is then particularly favorable.
Weitere Einzelheiten und Merkmale der Erfindung ergeben sich aus der nachstehenden Beschreibung eines Ausführungsbeispieles der Erfindung, das in den Zeichnungen gezeigt ist.Further details and features of the invention will become apparent from the following description of an embodiment of the invention, which is shown in the drawings.
Es zeigt:It shows:
Fig. 1 schematisch und in Seitenansicht den Teil eines Selbst¬ schalters mit ortsfestem Kontaktstück, beweglichem Kontakt und einer Platte undFig. 1 shows schematically and in side view the part of a circuit breaker with a fixed contact piece, movable contact and a plate and
Fig. 2 den Bereich von Fig. 1 im Schnitt mit den zugehörigen Gehäuseteilen.Fig. 2 shows the area of Fig. 1 in section with the associated housing parts.
Die Erfindung kann bei jedem Schalter, der für höhere Strom¬ stärken ausgelegt, ist, insbesondere aber für Selbstschalter, wie Leitungsschutzschalter, die im Kurzschlußfall ausschalten müssen, mit besonderem Vorteil eingesetzt werden.The invention can be used with particular advantage in the case of any switch which is designed for higher currents, but in particular for circuit breakers such as circuit breakers which have to switch off in the event of a short circuit.
Wie an sich bekannt, wird das ortsfeste Kontaktstück von einem Kontak streifen 1 getragen, der zu einem Hörn 6 (U-förmige Schlaufe) geformt ist. Dem Kontaktstück 5 und dem Hörn 6 ge¬ genüberliegend ist ein Leiterstreiren 3 vorgesehen, der als Anlage für den beweglichen Kontakt 2 dient, wenn sich dieser in der in Fig. 2 gezeigten AUS-Stellung befindet.As is known per se, the fixed contact piece is made by one Contact strips 1 worn, which is shaped into a horn 6 (U-shaped loop). Opposite the contact piece 5 and the horn 6 there is provided a conductor streak 3 which serves as a contact for the movable contact 2 when it is in the OFF position shown in FIG. 2.
Der Raum 8 zwischen dem Kontaktstreifen 1 und dem Leiterstrei¬ fen 3 wird nach beiden Seiten hin von Platten 7 begrenzt. Die Platten 7 sind im Gehäuse, das den Selbstschalter in sich aufnimmt, so angeordnet, daß zwischen den nach innen weisenden Flächen 9 der Gehäusewände 10 und den nach außen weisenden Flächen 12 der Platten 7 jeweils ein Raum 11 frei bleibt, wie dies in Fig. 2 gezeigt ist.The space 8 between the contact strip 1 and the conductor strip 3 is delimited on both sides by plates 7. The plates 7 are arranged in the housing which accommodates the self-switch in such a way that a space 11 remains free between the inwardly facing surfaces 9 of the housing walls 10 and the outwardly facing surfaces 12 of the plates 7, as shown in FIG. 2 is shown.
Im Bereich des Horns 6 im Kontaktstreifen 1, der den ortsfe¬ sten Kontakt 5 trägt, sind in jeder der beiden Platten 7 ringsum vom Werkstoff der Platte 7 begrenzte Öffnungen 4, z.B. in Form von Bohrungen, vorgesehen. Es ist je Platte 7 wenig¬ stens eine Öffnung 4 vorgesehen, wobei die in Fig. 1 gezeigte Anordnung von drei beispielsweise in den Ecken eines gleich¬ seitigen Dreiecks liegenden Öffnungen 4 auf der vom Kontakt- stück 5 abgekehrten Seite des Horns 6 des KontaktStreifens 1 besonders günstig und daher erfindungsgemäß bevorzugt ist.In the area of the horn 6 in the contact strip 1, which carries the stationary contact 5, in each of the two plates 7 there are openings 4, e.g. in the form of holes. At least one opening 4 is provided for each plate 7, the arrangement shown in FIG. 1 of three openings 4, for example in the corners of an equilateral triangle, on the side of the horn 6 of the contact strip 1 facing away from the contact piece 5 is particularly favorable and is therefore preferred according to the invention.
Durch die Öffnungen 4 in den Platten 7 ergibt sich beim (Kurz¬ schluß- )Ausschalten (Abheben des beweglichen Kontaktes 2 vom ortsfesten Kontakt 5) folgende vorteilhafte Wirkung: Durch die Öffnungen 4 wird den beim (Kurzschluß-)Ausschalten entstehen¬ den Gasen eine zusätzliche Möglichkeit zum Rückströmen zur Kontaktstelle 5 eröffnet (dies ist in Fig. 2 durch Pfeile symbolisiert). Dadurch wird der den Lichtbogenlauf (das Ablei¬ ten des (Kurzschluß- )Lichtbogens zu den Deionblechen einer Lichtbogenlöschkammer, nicht gezeigt) hemmende Gasdruck im Bereich der Lichtbogenstirn (vordere Front des Lichtbogens) zusätzlich reduziert.The openings 4 in the plates 7 result in the following advantageous effect when the (short circuit) is switched off (lifting the movable contact 2 from the fixed contact 5): through the openings 4, the gases which are produced when the (short circuit) is switched off are one additional possibility for backflow to contact point 5 opens (this is symbolized in FIG. 2 by arrows). As a result, the gas pressure in the region of the arc end (front front of the arc) which inhibits the arc running (the dissipation of the (short-circuit) arc to the deion sheets of an arc quenching chamber, not shown) is additionally reduced.
Weiters ist durch die Öffnungen 4 in den Platten 7, die bei¬ spielsweise aus einem gasenden Kunststoff, wie Polymethylme- thacrylat, hergestellt sind, die für die gasende Wirkung zur Verfügung stehende Fläche der Platten 7 im Bereich des Horns 6 verkleinert, da dort wegen der Öffnungen 5 weniger Material vorliegt. Dadurch ergibt sich eine relativ stärkere gasende Wirkung der Platten 7 in dem an der Kontaktstelle 5 liegenden Bereich, so daß sich eine relative Gasdruckdifferenz in den durch die gasende Wirkung der Platten 7 gebildeten Gasen er¬ gibt, weshalb die Bewegung des (Kurzschluß- )Lichtbogens durch den erhöhten, im Lichtbogenrücken wirkenden Gasdruck, der von der gasenden Wirkung der Platten 7 herrührt, zusätzlich be¬ schleunigt wird.Furthermore, through the openings 4 in the plates 7, which are produced, for example, from a gassing plastic, such as polymethyl methacrylate, the surface of the plates 7 available in the horn 6 area for the gassing effect downsized because there is less material because of the openings 5. This results in a relatively stronger gassing effect of the plates 7 in the area lying at the contact point 5, so that there is a relative gas pressure difference in the gases formed by the gassing effect of the plates 7, which is why the movement of the (short-circuit) arc is additionally accelerated by the increased gas pressure acting in the back of the arc, which results from the gassing effect of the plates 7.
Zusammenfassend kann die Erfindung beispielsweise wie folgt dargestellt werden;In summary, the invention can be illustrated as follows, for example;
Ein Schalter besitzt ein ortsfestes Kontaktstück 5, das an einem im Gehäuse des Schalters festgelegten Kontaktstreifen 1 befestigt ist, einen im Gehäuse des Schalters verschwenkbar gelagerten, beweglichen Kontakt 2 und einen Leiterstreifen 3, der als Anschlag für den beweglichen Kontakt 2 in seiner Aus¬ stellung dient. Der Raum 8 zwischen dem Kontaktstreifen 1 und dem Leiterstreifen 3 ist auf beiden Seiten von Platten 7 be¬ grenzt. In den Platten 7 sind je drei Öffnungen 4 vorgesehen, die aus dem von den durch die Kontaktstreifen 1, dem Leiter¬ streifen 3 und den Platten 7 begrenzten Raum 8 heraus in die Räume 11 zwischen den Platten 7 und den zugeordneten Wänden 10 des Gehäuses führen.A switch has a stationary contact piece 5 which is fastened to a contact strip 1 fixed in the housing of the switch, a movable contact 2 which is pivotably mounted in the housing of the switch and a conductor strip 3 which acts as a stop for the movable contact 2 in its position serves. The space 8 between the contact strip 1 and the conductor strip 3 is delimited by plates 7 on both sides. In the plates 7 three openings 4 are provided, which lead out of the space 8 delimited by the contact strips 1, the conductor strip 3 and the plates 7 into the spaces 11 between the plates 7 and the associated walls 10 of the housing .
Durch diese Öffnungen 4 in den Platten 7 können Lichtbogengase austreten und zur Kontaktstelle zurückströmen, so daß die Bewegung der Lichtbogengase zu einer Lichtbogenlöschkammer unterstützt wird. Weiters bildet sich wegen der durch die Öffnungen 4 bereichsweise verkleinerten Fläche der Platten 7 ein die Bewegung der Lichtbogengase zur Lichtbogenlöschkammer unterstützender Gasdruckunterschied zwischen der Vorderseite und der Rückseite des Lichtbogens aus. Arc gases can escape through these openings 4 in the plates 7 and flow back to the contact point, so that the movement of the arc gases to an arc quenching chamber is supported. Furthermore, because of the area of the plates 7 which is reduced in areas through the openings 4, a gas pressure difference between the front and the back of the arc which supports the movement of the arc gases to the arc quenching chamber is formed.

Claims

Patentansprüche: Claims:
1. Schalter, insbesondere Selbstschalter, mit einem ortsfe¬ sten Kontaktstück (5), das an einem im Gehäuse des Schal- ters festgelegten Kontaktstreifen (1) befestigt ist, mit einem im Gehäuse des Schalters verschwenkbar gelagerten, beweglichen Kontakt (2) und mit einem Kontaktstreifen (3), der als Anschlag für den beweglichen Kontakt (2) in seiner AUS-Stellung dient, wobei der Raum zwischen dem Leiter- streifen (1) und dem Kontaktstreifen (3) auf beiden Seiten von Platten (7) begrenzt ist, und wobei die vom Raum (8) abgekehrten Flächen (12) der Platten (7) von den zugekehr¬ ten Seiten (9 ) der Gehäusewände ( 10) einen Abstand auf¬ weisen, dadurch gekennzeichnet, daß innerhalb jeder der Platten (7) wenigstens eine Öffnung (4) vorgesehen ist, die auf des von den Kontaktstreifen (1, 3) und den Platten (7) begrenzten Raum herausführt.1. Switch, in particular self-switch, with a stationary contact piece (5) which is attached to a contact strip (1) fixed in the housing of the switch, with a movable contact (2) pivotably mounted in the housing of the switch and with a contact strip (3) which serves as a stop for the movable contact (2) in its OFF position, the space between the conductor strip (1) and the contact strip (3) being delimited on both sides by plates (7) , and wherein the surfaces (12) of the plates (7) facing away from the space (8) are at a distance from the facing sides (9) of the housing walls (10), characterized in that within each of the plates (7) at least one opening (4) is provided which leads out to the space delimited by the contact strips (1, 3) and the plates (7).
2. Schalter nach Anspruch 1, dadurch gekennzeichnet, daß die wenigstens eine Öffnung (4) jeder Platte (7) in dem einer2. Switch according to claim 1, characterized in that the at least one opening (4) of each plate (7) in the one
Lichtbogenlöschkammer benachbarten Bereich der Platten (7) vorgesehen ist.Arc extinguishing chamber adjacent region of the plates (7) is provided.
3. Schalter nach Anspruch 1 oder 2, wobei in dem das orts- feste Kontaktstück (5) tragenden Kontaktstreifen (1) ein3. Switch according to claim 1 or 2, wherein in the one of the fixed contact piece (5) carrying contact strip (1)
U-förmig gebogenes Hörn (6) ausgebildet ist, das auf den weiteren Kontaktstreifen (3) zu weist, dadurch gekenn¬ zeichnet, daß die wenigstens eine Öffnung (4) in jeder Platte (7) im Bereich des Horns (6) des Kontaktstreifens (1 ) angeordnet ist.U-shaped horn (6) is formed, which points to the further contact strip (3), characterized in that the at least one opening (4) in each plate (7) in the region of the horn (6) of the contact strip (1) is arranged.
4. Schalter nach einem der Ansprüche 1 bis 3, dadurch gekenn¬ zeichnet, daß in jeder der Platten (7) mehrere Öffnungen (4), vorzugsweise drei Öffnungen (4) vorgesehen sind.4. Switch according to one of claims 1 to 3, characterized gekenn¬ characterized in that in each of the plates (7) a plurality of openings (4), preferably three openings (4) are provided.
5. Schalter nach Anspruch 4, dadurch gekennzeichnet, daß in jeder Platte (7) zwei Öffnungen (4) dem das Hörn (6) bil¬ denden Abschnitt des Kontaktstreifens (1) benachbart und eine weitere Öffnung (4) zu den beiden anderen nach Form eines im wesentlichen gleichseitigen Dreiecks angeordnet ist .5. Switch according to claim 4, characterized in that in each plate (7) two openings (4) adjacent to the horn (6) forming portion of the contact strip (1) and a further opening (4) to the other two after Formed a substantially equilateral triangle is.
6. Schalter nach einem der Ansprüche 1 bis 5, dadurch gekenn¬ zeichnet, daß die Platten (7) aus einem unter Einwirkung der Hitze eines Lichtbogens Gas abgebenden Kunststoff, vorzugsweise Polymethylmethacrylat, bestehen. 6. Switch according to one of claims 1 to 5, characterized gekenn¬ characterized in that the plates (7) made of a gas emitting under the influence of the heat of an arc plastic, preferably polymethyl methacrylate.
PCT/AT1994/000117 1993-11-02 1994-08-22 Switch WO1995012888A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP94923585A EP0727088B1 (en) 1993-11-02 1994-08-22 Switch
AT94923585T ATE156298T1 (en) 1993-11-02 1994-08-22 SWITCH
PL94314227A PL174603B1 (en) 1993-11-02 1994-08-22 Switch
AU73771/94A AU676934B2 (en) 1993-11-02 1994-08-22 Switch
DE59403580T DE59403580D1 (en) 1993-11-02 1994-08-22 COUNTER
NO961789A NO307907B1 (en) 1993-11-02 1996-05-02 Switch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0219993A AT410725B (en) 1993-11-02 1993-11-02 SELF-SWITCH
ATA2199/93 1993-11-02

Publications (1)

Publication Number Publication Date
WO1995012888A1 true WO1995012888A1 (en) 1995-05-11

Family

ID=3529840

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1994/000117 WO1995012888A1 (en) 1993-11-02 1994-08-22 Switch

Country Status (11)

Country Link
EP (1) EP0727088B1 (en)
AT (2) AT410725B (en)
AU (1) AU676934B2 (en)
CZ (1) CZ285082B6 (en)
DE (1) DE59403580D1 (en)
DK (1) DK0727088T3 (en)
ES (1) ES2106556T3 (en)
HU (1) HU215890B (en)
NO (1) NO307907B1 (en)
PL (1) PL174603B1 (en)
WO (1) WO1995012888A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005022213A1 (en) * 2005-05-13 2006-11-16 Abb Patent Gmbh Electrical installation device with arc prechamber space, prechamber plates and current limiting arc quenching device
WO2007144016A1 (en) * 2006-06-12 2007-12-21 Ellenberger & Poensgen Gmbh Protection switch
EP1876617A1 (en) * 2006-07-06 2008-01-09 ABB PATENT GmbH Electrical installation switch with pre-arcing chamber, arcing horns and current limiting arc chute

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1185269B (en) * 1961-08-21 1965-01-14 Licentia Gmbh Switchgear with soldering plate arrangement
DE1922747A1 (en) * 1969-05-03 1970-11-05 Bbc Brown Boveri & Cie Arc chamber
DE1933529A1 (en) * 1969-07-02 1971-01-21 Bbc Brown Boveri & Cie Arc chamber made of sieve ceramic
EP0183145A2 (en) * 1984-11-27 1986-06-04 Asea Brown Boveri Aktiengesellschaft Electrical switch device, especially a protective power circuit breaker
EP0251160A2 (en) * 1986-06-27 1988-01-07 Asea Brown Boveri Aktiengesellschaft Quenching device for electric circuit breaker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1185269B (en) * 1961-08-21 1965-01-14 Licentia Gmbh Switchgear with soldering plate arrangement
DE1922747A1 (en) * 1969-05-03 1970-11-05 Bbc Brown Boveri & Cie Arc chamber
DE1933529A1 (en) * 1969-07-02 1971-01-21 Bbc Brown Boveri & Cie Arc chamber made of sieve ceramic
EP0183145A2 (en) * 1984-11-27 1986-06-04 Asea Brown Boveri Aktiengesellschaft Electrical switch device, especially a protective power circuit breaker
EP0251160A2 (en) * 1986-06-27 1988-01-07 Asea Brown Boveri Aktiengesellschaft Quenching device for electric circuit breaker

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005022213A1 (en) * 2005-05-13 2006-11-16 Abb Patent Gmbh Electrical installation device with arc prechamber space, prechamber plates and current limiting arc quenching device
EP1722384A3 (en) * 2005-05-13 2007-06-27 ABB PATENT GmbH Electrical installation device with an arc chute assembly and a current limiting arc extinguishing device
WO2007144016A1 (en) * 2006-06-12 2007-12-21 Ellenberger & Poensgen Gmbh Protection switch
US7834290B2 (en) 2006-06-12 2010-11-16 Ellenberger & Poensgen Gmbh Protection switch
EP1876617A1 (en) * 2006-07-06 2008-01-09 ABB PATENT GmbH Electrical installation switch with pre-arcing chamber, arcing horns and current limiting arc chute

Also Published As

Publication number Publication date
EP0727088A1 (en) 1996-08-21
ES2106556T3 (en) 1997-11-01
PL314227A1 (en) 1996-09-02
HU9601165D0 (en) 1996-07-29
DK0727088T3 (en) 1997-10-13
HUT75408A (en) 1997-05-28
AT410725B (en) 2003-07-25
PL174603B1 (en) 1998-08-31
AU7377194A (en) 1995-05-23
DE59403580D1 (en) 1997-09-04
ATA219993A (en) 2002-11-15
NO961789D0 (en) 1996-05-02
CZ127996A3 (en) 1999-01-13
ATE156298T1 (en) 1997-08-15
NO961789L (en) 1996-06-24
AU676934B2 (en) 1997-03-27
EP0727088B1 (en) 1997-07-30
NO307907B1 (en) 2000-06-13
HU215890B (en) 1999-03-29
CZ285082B6 (en) 1999-05-12

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