EP1032942B1 - Switching device with an electric arc extinguishing device - Google Patents

Switching device with an electric arc extinguishing device Download PDF

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Publication number
EP1032942B1
EP1032942B1 EP98962230A EP98962230A EP1032942B1 EP 1032942 B1 EP1032942 B1 EP 1032942B1 EP 98962230 A EP98962230 A EP 98962230A EP 98962230 A EP98962230 A EP 98962230A EP 1032942 B1 EP1032942 B1 EP 1032942B1
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EP
European Patent Office
Prior art keywords
arc
wall
insulating strip
chamber
arcing chamber
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
EP98962230A
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German (de)
French (fr)
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EP1032942A1 (en
Inventor
Ludwig Niebler
Christian Schreckinger
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Siemens AG
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Siemens AG
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Publication of EP1032942A1 publication Critical patent/EP1032942A1/en
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    • 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
    • H01H9/36—Metal parts
    • 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
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns

Definitions

  • the invention relates to a switching device with a fixed contact and a movable contact, which together form a contact point form, and with one to delete one on it Arc extinguishing device that serves as the contact point for arcing, the one designed as an arc chamber Assembly of several parallel by means of an insulating strip, spaced extinguishing sheets and a first and comprises a second arc baffle, the two Arc baffles each one of the outer quenching plates are arranged adjacent to the arc quenching device and the insulating strip at the arc chamber end has forming wall on which the quenching plates end.
  • Such an arc extinguishing device exists according to the figure 4 often from an arc chamber 1 with arc baffles 2 and 3 and various components, which among other things also perform fluidic tasks.
  • the arc chamber 1 is, as shown in FIG. 5, as a U-shaped package punched quenching plates 4, which are arranged in parallel and are kept at a distance.
  • a strip of insulating material usually a volcanic fever strip 5, which folded the fire-fighting sheets 4 keeps at a distance and combines into an assembly.
  • openings 6 are punched, the under the flow conditions in the arc chamber 1 influence.
  • the baffles 2 and 3 are on the top and on arranged lower end of the arc chamber 1 according to Figure 4.
  • the upper arc guide plate 2 forms together with a movable Contact bridge 7 a contact point 8.
  • FIG. 6 shows a cross-sectional illustration of the arc quenching device the migration of the arc from the Contact point in the arcing chamber.
  • the arc baffles are kept relatively short, i.e. not to the end of the arc chamber where the Extinguishing plates end, guided. Another option is completely dispensing with the lower arc guide plate.
  • the solution with short baffles has the important one Disadvantage that the entire volume of the inner part of the arc chamber during the extinguishing process optimal is exploited.
  • the invention has for its object a switching device to improve the above type in that the arc chamber is optimally used in its extinguishing effect, and at the same time eliminates the danger that the arc shorts in the room behind the arc chamber.
  • the object is achieved in that one of the arc baffles beyond the wall of the insulating strip into one Survives behind the arc chamber and at the same time the other of the arc baffles opposite the one behind the arc chamber through the wall of the Insulated strip in connection with a housing wall is. With this configuration, an optimal Efficiency of the arc extinguishing device reached. By the specified partitioning of one of the arc baffles prevents the arc in the room behind the Can short circuit the arc chamber.
  • a particularly advantageous embodiment of the invention consists of if one of the arc baffles is supported in this way is that an approximation to the nearest quenching sheet is prevented.
  • the support is advantageously carried out on the wall of the Insulating strip. Furthermore, it is advantageous if that over the space behind the arcing chamber Arc baffle except for a mounting game to the Wall of the insulating strip reaches the arc chamber to make optimum use of their extinguishing effects.
  • the solution according to the invention does not require any additional parts additional assembly steps.
  • an arc extinguishing device is composed of an arc chamber 10 with an upper 11 and a lower Arc guide plate 12 shown.
  • the arc chamber 10 is designed as a package made of U-shaped die-cut sheet metal 13, which are arranged in parallel and kept at a distance are.
  • the insulating strip 14 has a wall 15 forming the arc chamber closure of the quenching plates 13 end.
  • the upper arc baffle 11, which is arranged parallel to the top quenching plate 13, forms a together with a movable contact bridge 16 Contact point 17 at which when the contact opens, i.e.
  • an arc forms when the switching device trips.
  • Parallel to the lowest quenching plate 13 is the lower arc guide plate 12 arranged that over the wall 15 of the insulating strip 14 into the rear of the arc chamber 10 survives lying space.
  • the lower arc baffle 12 is supported on a projecting tab 18 of the wall 15, so that on the one hand an approximation to the closest Extinguishing plate 13 is prevented and on the other hand at the same time Emigration of the arc base at the lower arc baffle 12 in the room located behind the arc chamber 10 is excluded.
  • the upper arc guide plate 11 is apart from an assembly game led to a projecting tab 19 of the wall 15. It is in a groove 20 of the housing, of which the housing cutout 21 is shown.
  • the upper projecting tab 19 the wall 15, in connection with the housing, creates a partition of the upper arc guide plate 11 compared to the behind the arc chamber 10, which is the above prevents undesirable short-circuiting of the arc.
  • Arc quenching device is shown in Figure 2.
  • the arc guide plates 11 and 12 have a Arc chamber 10 optimally utilizing length, while at the same time by supporting the lower arc baffle 12 and the partitioning of the upper arc guide plate 11 Danger of a short circuit of the arc behind the arc chamber 10 is turned off. As measures were taken the wall 15 up and down by protruding rags 18 and 19 extended.
  • the arc guide plate 12 also down through the housing to be supported so that it is the same as for the upper arc guide plate 11 there is such a partition that the arc base only up to wall 15 of the insulating strip 14 can hike.
  • Figure 3 shows the arc chamber 10 with the from the quenching plates 13 existing package through the insulating strip 14 is held together.
  • the wall 15 is up and down extended by projecting tabs 18 and 19 as mentioned above.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Discharge Heating (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Breakers (AREA)

Description

Die Erfindung betrifft ein Schaltgerät mit einem festen Kontakt und einem beweglichen Kontakt, die gemeinsam eine Kontaktstelle bilden, und mit einer zur Löschung eines an dieser Kontaktstelle auftretenden Lichtbogens dienenden Lichtbogen-Löscheinrichtung, die eine als Lichtbogenkammer ausgebildete Baugruppe aus mehreren mittels eines Isolierstreifens parallel, auf Abstand gehaltenen Löschblechen sowie ein erstes und ein zweites Lichtbogenleitblech umfaßt, wobei die beiden Lichtbogenleitbleche jeweils einem der äußeren Löschbleche der Lichtbogen-Löscheinrichtung benachbart angeordnet sind und wobei der Isolierstreifen eine den Lichtbogenkammer-Abschluß bildende Wand aufweist, an der die Löschbleche enden.The invention relates to a switching device with a fixed contact and a movable contact, which together form a contact point form, and with one to delete one on it Arc extinguishing device that serves as the contact point for arcing, the one designed as an arc chamber Assembly of several parallel by means of an insulating strip, spaced extinguishing sheets and a first and comprises a second arc baffle, the two Arc baffles each one of the outer quenching plates are arranged adjacent to the arc quenching device and the insulating strip at the arc chamber end has forming wall on which the quenching plates end.

Ein gattungsgemäßes Schaltgerät ist seit geraumer Zeit am Elektromarkt erhältlich. Bei derartigen Schalt- bzw. Schutzgeräten entsteht beim Abschalten von elektrischen Strömen an den sich öffnenden Kontaktstellen ein Lichtbogen. Dieser Lichtbogen verursacht an den Kontaktstellen durch Abbrand des Kontaktmaterials einen Verschleiß und verzögert das Freischalten des Stromkreises, da der Strom über den Lichtbogen solange weiterfließt, bis dieser erlischt. Um den Schaden durch den Lichtbogen einzuschränken, sind elektrische Schalt- bzw. Schutzgeräte ab einer bestimmten Leistung mit einer Lichtbogen-Löscheinrichtung ausgerüstet.A generic switchgear has been around for quite some time Electronics market available. With such switching or protective devices arises when electrical currents are switched off an arc at the contact points that open. This Arc caused at the contact points by burning up the Contact material wear and delays the activation of the circuit because the current is through the arc continues to flow until it goes out. To the damage restricted by the arc, electrical switching or protective devices with a certain power Arc extinguishing device equipped.

Eine derartige Lichtbogen-Löscheinrichtung besteht gemäß Figur 4 häufig aus einer Lichtbogenkammer 1 mit Lichtbogenleitblechen 2 und 3 und diversen Komponenten, welche unter anderem auch strömungstechnische Aufgaben erfüllen. Such an arc extinguishing device exists according to the figure 4 often from an arc chamber 1 with arc baffles 2 and 3 and various components, which among other things also perform fluidic tasks.

Die Lichtbogenkammer 1 ist gemäß Figur 5 als Paket aus U-förmig gestanzten Löschblechen 4 ausgeführt, welche parallel angeordnet sind und auf Abstand gehalten werden. Um die Löschbleche 4 herum ist ein Streifen aus isolierendem Material, meist ein Vulkanfieberstreifen 5, gefaltet, der die Löschbleche 4 auf Abstand hält und zu einer Baugruppe zusammenfaßt. In den Isolierstreifen 5 sind Öffnungen 6 gestanzt, die unter anderem die Strömungsverhältnisse in der Lichtbogenkammer 1 beeinflussen. Die Leitbleche 2 und 3 sind am oberen und am unteren Ende der Lichtbogenkammer 1 gemäß Figur 4 angeordnet. Das obere Lichtbogenleitblech 2 bildet zusammen mit einer beweglichen Kontaktbrücke 7 eine Kontaktstelle 8.The arc chamber 1 is, as shown in FIG. 5, as a U-shaped package punched quenching plates 4, which are arranged in parallel and are kept at a distance. To the quenching plates 4 around is a strip of insulating material, usually a volcanic fever strip 5, which folded the fire-fighting sheets 4 keeps at a distance and combines into an assembly. In the insulating strip 5 openings 6 are punched, the under the flow conditions in the arc chamber 1 influence. The baffles 2 and 3 are on the top and on arranged lower end of the arc chamber 1 according to Figure 4. The upper arc guide plate 2 forms together with a movable Contact bridge 7 a contact point 8.

Figur 6 zeigt in einer Querschnittsdarstellung der Lichtbogen-Löscheinrichtung die Wanderung des Lichtbogens von der Kontaktstelle in die Lichtbogenkammer. Beim Öffnen der Kontaktstelle 8 entsteht ein Lichtbogen 9 zwischen den sich voneinander entfernenden Kontakten. Durch elektromagnetische Kräfte wird der Lichtbogen 9 in Richtung der Lichtbogen-Löschkammer 1 bewegt. Die Lichtbogenfußpunkte des Lichtbogens 9 an den Austrittstellen der Lichtbogenleitbleche 2 und 3 wandern dabei von der Kontaktstelle 8 weg entlang der mit dem Stromkreis elektrisch verbundenen Lichtbogenleitbleche 2 und 3. Dabei sind die Lichtbogenleitbleche 2 und 3 so geformt und angeordnet, daß sie den Lichtbogen möglichst rasch zur Lichtbogenkammer 1 hinführen. Im inneren Teil der Lichtbogenkammer 1 wird der Lichtbogen 9 dann gelöscht. Während des beschriebenen Ablaufs treten strom- bzw. thermomechanische Kräfte zwischen den Löschblechen 4 und den Lichtbogenleitblechen 2 und 3 auf. Werden die Lichtbogenleitbleche 2 und 3 nicht stabil genug fixiert, was aufgrund der konstruktiven Gegebenheiten oftmals nicht ausreichend gelingt, so berühren sie die äußeren Löschbleche 4 und verschweißen mit diesen. Hierdurch wird die Effizienz der Lichtbogenkammer 1 für weitere Löschabläufe gemindert. Bei besonders starken Lichtbögen wie sie als Folge von Kurzschlußabschaltungen auftreten besteht die Gefahr, daß diese die Lichtbogenkammer durchlaufen und sich dahinter kurzschließen. In diesem Fall ist die Löschwirkung der Lichtbogenkammer nicht mehr gegeben.FIG. 6 shows a cross-sectional illustration of the arc quenching device the migration of the arc from the Contact point in the arcing chamber. When opening the contact point 8 creates an arc 9 between each other removing contacts. By electromagnetic Forces the arc 9 in the direction of the arc quenching chamber 1 moves. The arc base points of the arc 9 at the exit points of the arc guide plates 2 and 3 migrate away from the contact point 8 along with the Circuit electrically connected arc guide plates 2 and 3. The arc guide plates 2 and 3 are shaped and arranged that the arc as quickly as possible to the arc chamber 1 lead. In the inner part of the arc chamber 1, the arc 9 is then extinguished. During the described Current or thermomechanical forces occur between the quenching plates 4 and the arc guiding plates 2 and 3 on. If the arc guide plates 2 and 3 are not stable fixed enough what due to the constructional circumstances often do not succeed sufficiently, so touch them outer quenching plates 4 and weld to them. hereby becomes the efficiency of the arc chamber 1 for further extinguishing processes reduced. With particularly strong arcs like this occur as a result of short-circuit shutdowns Danger of these passing through the arc chamber and themselves short circuit behind. In this case the extinguishing effect is the arc chamber is no longer given.

Um das Kurzschließen des Lichtbogens im Raum hinter der Lichtbogenkammer zu vermeiden, sind bisher folgende Lösungen bekannt. Die Lichtbogenleitbleche werden relativ kurz gehalten, d.h. nicht bis zum Ende der Lichtbogenkammer, wo die Löschbleche enden, geführt. Eine andere Möglichkeit ist der gänzliche Verzicht auf das untere Lichtbogenleitblech. Üblicherweise werden die sehr kurzgehaltenen Lichtbogenleitbleche entweder überhaupt nicht mechanisch abgestützt oder aber es wird zur Abstützung ein zusätzliches Kunststoffteil eingesetzt, was allerdings mit entsprechenden Mehrkosten verbunden ist. Die Lösung mit kurzen Leitblechen hat den bedeutenden Nachteil, daß unter Umständen nicht das gesamte Volumen des inneren Teils der Lichtbogenkammer beim Löschvorgang optimal ausgenutzt wird.To short the arc in the space behind the Avoiding arcing chambers are the following solutions known. The arc baffles are kept relatively short, i.e. not to the end of the arc chamber where the Extinguishing plates end, guided. Another option is completely dispensing with the lower arc guide plate. Usually become the very short arc baffles either not mechanically supported at all or it an additional plastic part is used for support, which, however, entails corresponding additional costs is. The solution with short baffles has the important one Disadvantage that the entire volume of the inner part of the arc chamber during the extinguishing process optimal is exploited.

Der Erfindung liegt die Aufgabe zugrunde, ein Schaltgerät der oben genannten Art dahingehend zu verbessern, daß die Lichtbogenkammer in ihrer Löschwirkung optimal ausgenutzt wird, und dabei zugleich die Gefahr ausgeschaltet wird, daß sich der Lichtbogen im Raum hinter der Lichtbogenkammer kurzschließt.The invention has for its object a switching device to improve the above type in that the arc chamber is optimally used in its extinguishing effect, and at the same time eliminates the danger that the arc shorts in the room behind the arc chamber.

Die Aufgabe wird dadurch gelöst, daß eines der Lichtbogenleitbleche über die Wand des Isolierstreifens hinaus in einen hinter der Lichtbogenkammer liegenden Raum übersteht und zugleich das andere der Lichtbogenleitbleche gegenüber dem hinter der Lichtbogenkammer liegenden Raum durch die Wand des Isolierstreifens in Verbindung mit einer Gehäusewand abgeschottet ist. Bei dieser Ausgestaltung wird ein optimaler Wirkungsgrad der Lichtbogen-Löscheinrichtung erreicht. Durch die angegebene Abschottung des einen der Lichtbogenleitbleche wird verhindert, daß sich der Lichtbogen im Raum hinter der Lichtbogenkammer kurzschließen kann .The object is achieved in that one of the arc baffles beyond the wall of the insulating strip into one Survives behind the arc chamber and at the same time the other of the arc baffles opposite the one behind the arc chamber through the wall of the Insulated strip in connection with a housing wall is. With this configuration, an optimal Efficiency of the arc extinguishing device reached. By the specified partitioning of one of the arc baffles prevents the arc in the room behind the Can short circuit the arc chamber.

Eine besonders vorteilhafte Ausgestaltung der Erfindung besteht, wenn eines der Lichtbogenleitbleche derart abgestützt ist, daß eine Annäherung an das nächstliegende Löschblech verhindert wird.A particularly advantageous embodiment of the invention consists of if one of the arc baffles is supported in this way is that an approximation to the nearest quenching sheet is prevented.

Vorteilhafterweise erfolgt die Abstützung an der Wand des Isolierstreifens. Weiterhin ist es vorteilhaft, wenn das gegenüber dem hinter der Lichtbogenkammer liegenden Raum abgeschottete Lichtbogenleitblech bis auf ein Montagespiel an die Wand des Isolierstreifens heranreicht, um die Lichtbogenkammer in ihrer Löschwirkung optimal auszunutzen.The support is advantageously carried out on the wall of the Insulating strip. Furthermore, it is advantageous if that over the space behind the arcing chamber Arc baffle except for a mounting game to the Wall of the insulating strip reaches the arc chamber to make optimum use of their extinguishing effects.

Die erfindungsgemäße Lösung erfordert weder zusätzliche Teile noch zusätzliche Montageschritte. Durch geringfügig erhöhten Materialaufwand und damit geringe Mehrkosten für den Isolierstreifen läßt sich die Lösung auf einfache Weise realisieren.The solution according to the invention does not require any additional parts additional assembly steps. By slightly increased Material expenditure and thus low additional costs for the insulating strip the solution can be implemented in a simple manner.

Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand einer Zeichnung näher erläutert. Es zeigen:

FIG 1
eine perspektivische Ansicht einer erfindungsgemäßen Lichtbogen-Löscheinrichtung in Zusammenwirkung mit einer Kontaktstelle,
FIG 2
eine Schnittansicht einer erfindungsgemäßen Lichtbogen-Löscheinrichtung in Zusammenwirkung mit einer Kontaktstelle,
FIG 3
eine Lichtbogenkammer der Lichtbogen-Löscheinrichtungen gemäß Figur 1 und 2,
FIG 4
eine Lichtbogen-Löscheinrichtung in bekannter Ausführung,
FIG 5
die Lichtbogenkammer der Lichtbogen-Löscheinrichtung gemäß Figur 4 und
FIG 6
eine Querschnittsdarstellung der bekannten Lichtbogen-Löscheinrichtung mit Darstellung der Löschwirkung in Verbindung mit der Wanderung des Lichtbogens in die Lichtbogenkammer.
An embodiment of the invention is explained below with reference to a drawing. Show it:
FIG. 1
1 shows a perspective view of an arc extinguishing device according to the invention in cooperation with a contact point,
FIG 2
1 shows a sectional view of an arc extinguishing device according to the invention in cooperation with a contact point,
FIG 3
an arc chamber of the arc extinguishing devices according to Figures 1 and 2,
FIG 4
an arc extinguishing device in a known design,
FIG 5
the arc chamber of the arc extinguishing device according to Figure 4 and
FIG 6
a cross-sectional view of the known arc extinguishing device showing the extinguishing effect in connection with the migration of the arc into the arc chamber.

In Figur 1 ist eine Lichtbogen-Löscheinrichtung bestehend aus einer Lichtbogenkammer 10 mit einem oberen 11 und einem unteren Lichtbogenleitblech 12 dargestellt. Die Lichtbogenkammer 10 ist als Paket aus U-förmig gestanzten Löschblechen 13 ausgeführt, die parallel angeordnet sind und auf Abstand gehalten sind. Um die Löschbleche 13 herum ist ein Isolierstreifen 14 gefaltet, der die Löschbleche 13 auf Abstand hält und zu einer Baugruppe zusammenfaßt. Der Isolierstreifen 14 weist eine den Lichtbogenkammer-Abschluß bildende Wand 15 auf, an der die Löschbleche 13 enden. Das obere Lichtbogenleitblech 11, das parallel zum obersten Löschblech 13 angeordnet ist, bildet zusammen mit einer beweglichen Kontaktbrücke 16 eine Kontaktstelle 17, an der sich bei Öffnung des Kontakts, d.h. bei Auslösung des Schaltgeräts ein Lichtbogen bildet. Parallel zum untersten Löschblech 13 ist das untere Lichtbogenleitblech 12 angeordnet, das über die Wand 15 des Isolierstreifens 14 hinaus in den hinter der Lichtbogenkammer 10 liegenden Raum übersteht. Das untere Lichtbogenleitblech 12 stützt sich an einem überstehenden Lappen 18 der Wand 15 ab, so daß einerseits eine Annäherung an das nächstliegende Löschblech 13 verhindert wird und andererseits zugleich ein Auswandern des Lichtbogenfußpunkts am unteren Lichtbogenleitblech 12 in den hinter der Lichtbogenkammer 10 liegenden Raum ausgeschlossen wird.In Figure 1, an arc extinguishing device is composed of an arc chamber 10 with an upper 11 and a lower Arc guide plate 12 shown. The arc chamber 10 is designed as a package made of U-shaped die-cut sheet metal 13, which are arranged in parallel and kept at a distance are. There is an insulating strip around the extinguishing plates 13 14 folded, which keeps the quenching plates 13 at a distance and to summarizes an assembly. The insulating strip 14 has a wall 15 forming the arc chamber closure of the quenching plates 13 end. The upper arc baffle 11, which is arranged parallel to the top quenching plate 13, forms a together with a movable contact bridge 16 Contact point 17 at which when the contact opens, i.e. an arc forms when the switching device trips. Parallel to the lowest quenching plate 13 is the lower arc guide plate 12 arranged that over the wall 15 of the insulating strip 14 into the rear of the arc chamber 10 survives lying space. The lower arc baffle 12 is supported on a projecting tab 18 of the wall 15, so that on the one hand an approximation to the closest Extinguishing plate 13 is prevented and on the other hand at the same time Emigration of the arc base at the lower arc baffle 12 in the room located behind the arc chamber 10 is excluded.

Das obere Lichtbogenleitblech 11 ist bis auf ein Montagespiel an einen überstehenden Lappen 19 der Wand 15 geführt. Es steckt in einer Nut 20 des Gehäuses, von dem hier der Gehäuseausschnitt 21 dargestellt ist. Durch die Fixierung in dem Gehäuse wird ebenfalls erreicht, daß sich das obere Lichtbogenleitblech 11 an das obere Löschblech 13 der Lichtbogenkammer 10 nicht annähern kann. Der obere überstehende Lappen 19 der Wand 15 bewirkt in Verbindung mit dem Gehäuse eine Abschottung des oberen Lichtbogenleitblechs 11 gegenüber dem hinter der Lichtbogenkammer 10 liegenden Raum, was den oben erwähnten unerwünschten Kurzschluß des Lichtbogens verhindert. Die Wirkungsweise der in dieser Weise verbesserten Lichtbogen-Löscheinrichtung ist aus Figur 2 ersichtlich. Einerseits weisen die Lichtbogenleitbleche 11 und 12 eine die Lichtbogenkammer 10 optimal ausnutzende Länge auf, wobei zugleich durch die Abstützung des unteren Lichtbogenleitblechs 12 und die Abschottung des oberen Lichtbogenleitblechs 11 die Gefahr eines Kurzschlusses des Lichtbogens hinter der Lichtbogenkammer 10 ausgeschaltet wird. Als Maßnahmen wurden hierzu die Wand 15 nach oben und unten zu durch überstehende Lappen 18 und 19 verlängert.The upper arc guide plate 11 is apart from an assembly game led to a projecting tab 19 of the wall 15. It is in a groove 20 of the housing, of which the housing cutout 21 is shown. By fixing in the Housing is also achieved that the upper arc baffle 11 to the upper quenching plate 13 of the arc chamber 10 cannot approach. The upper projecting tab 19 the wall 15, in connection with the housing, creates a partition of the upper arc guide plate 11 compared to the behind the arc chamber 10, which is the above prevents undesirable short-circuiting of the arc. The operation of the improved in this way Arc quenching device is shown in Figure 2. On the one hand the arc guide plates 11 and 12 have a Arc chamber 10 optimally utilizing length, while at the same time by supporting the lower arc baffle 12 and the partitioning of the upper arc guide plate 11 Danger of a short circuit of the arc behind the arc chamber 10 is turned off. As measures were taken the wall 15 up and down by protruding rags 18 and 19 extended.

Wie aus Figur 2 ersichtlich ist es darüber hinaus zweckmäßig, das Lichtbogenleitblech 12 auch nach unten hin durch das Gehäuse abzustützen, so daß ebenso wie beim oberen Lichtbogenleitblech 11 eine solche Abschottung besteht, daß der Lichtbogenfußpunkt lediglich bis zur Wand 15 des Isolierstreifens 14 wandern kann.As can be seen from FIG. 2, it is also expedient the arc guide plate 12 also down through the housing to be supported so that it is the same as for the upper arc guide plate 11 there is such a partition that the arc base only up to wall 15 of the insulating strip 14 can hike.

Figur 3 zeigt die Lichtbogenkammer 10 mit dem aus den Löschblechen 13 bestehenden Paket, das durch den Isolierstreifen 14 zusammengehalten wird. Die Wand 15 ist nach oben und unten hin durch überstehende Lappen 18 und 19 wie oben erwähnt verlängert.Figure 3 shows the arc chamber 10 with the from the quenching plates 13 existing package through the insulating strip 14 is held together. The wall 15 is up and down extended by projecting tabs 18 and 19 as mentioned above.

Claims (4)

  1. Switch unit with one fixed contact and one moving contact, that together form a point of contact (17), and with an arc-quenching device which serves to quench an arc occurring at this point of contact (17), that consists of an assembly of several arc splitters (13) spaced parallel apart by an insulating strip (14) and a first (11) and second (12) arc runner forming an arcing chamber (10), whereby both arc runners (11,12) are each assigned to one of the adjacent outer arc splitters (13) of the arc-quenching device and whereby the insulating strip (14) has a wall (15) forming the arcing chamber closure, at which the arc splitters (13) terminate, characterised in that one of the arc runners (11 or 12) extends beyond the wall (15) of the insulating strip (14) into a space lying behind the arcing chamber (10) and the other arc runner (11 or 12) opposite the space lying being the arcing chamber (10) is partitioned off by the wall (15) of the insulating strip (14) in conjunction with a housing wall (21).
  2. Switch unit in accordance with claim 1, characterised in that one of the arc runners (11,12) is supported in such a way that an approach to the adjacent arc splitter (13) is prevented.
  3. Switch unit in accordance with claim 2, characterised in that the supporting takes place at the wall (15) of the insulating strip (14).
  4. Switch unit in accordance with one of the preceding claims, characterised in that the partitioned arc runner (11) opposite the space lying behind the arcing chamber (10) extends up to within a mounting clearance of the wall (15) of the insulating strip (14).
EP98962230A 1997-11-21 1998-11-09 Switching device with an electric arc extinguishing device Expired - Lifetime EP1032942B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29720715U 1997-11-21
DE29720715U DE29720715U1 (en) 1997-11-21 1997-11-21 Switchgear with arc quenching device
PCT/DE1998/003272 WO1999027553A1 (en) 1997-11-21 1998-11-09 Switching device with an electric arc extinguishing device

Publications (2)

Publication Number Publication Date
EP1032942A1 EP1032942A1 (en) 2000-09-06
EP1032942B1 true EP1032942B1 (en) 2002-02-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98962230A Expired - Lifetime EP1032942B1 (en) 1997-11-21 1998-11-09 Switching device with an electric arc extinguishing device

Country Status (5)

Country Link
US (1) US6262384B1 (en)
EP (1) EP1032942B1 (en)
CN (1) CN1132207C (en)
DE (2) DE29720715U1 (en)
WO (1) WO1999027553A1 (en)

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EP2031617A3 (en) * 2007-09-03 2010-06-09 LS Industrial Systems Co., Ltd Arc extinguishing device of circuit breaker for manual motor starter

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DE10048328C2 (en) * 2000-09-28 2003-01-23 Aeg Niederspannungstech Gmbh Arc-extinguishing device
DE10356271B4 (en) 2003-11-28 2008-02-14 Siemens Ag switchgear
DE102005007303B4 (en) * 2005-02-17 2013-03-21 Abb Ag Electrical installation device with arc prechamber space, arc guide rails and current limiting arc quenching device
DE102005007282A1 (en) * 2005-02-17 2006-08-24 Abb Patent Gmbh Electrical installation device with arc prechamber space, prechamber plates and current limiting arc quenching device
DE102009023556B4 (en) 2009-05-30 2012-01-19 Abb Ag Electrical switching device with a thermal release
US8866034B2 (en) * 2011-04-14 2014-10-21 Carling Technologies, Inc. Arc runner with integrated current path that develops a magnetic field to boost arc movement towards splitter plates
US8963038B2 (en) * 2011-09-19 2015-02-24 Stoss Kommen Pope High voltage relay non mercury
US10056210B2 (en) 2016-01-14 2018-08-21 Rockwell Automation Switzerland Gmbh Arc chamber assembly and method
CN109360698B (en) * 2018-11-07 2023-10-03 南宁超伏电气科技有限公司 Arc extinguishing device capable of being installed on insulator string in nested mode

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2031617A3 (en) * 2007-09-03 2010-06-09 LS Industrial Systems Co., Ltd Arc extinguishing device of circuit breaker for manual motor starter
CN101383252B (en) * 2007-09-03 2011-04-13 Ls产电株式会社 Arc extinguishing device of circuit breaker for manual motor starter

Also Published As

Publication number Publication date
DE59803150D1 (en) 2002-03-28
DE29720715U1 (en) 1998-01-22
CN1132207C (en) 2003-12-24
US6262384B1 (en) 2001-07-17
WO1999027553A1 (en) 1999-06-03
CN1278359A (en) 2000-12-27
EP1032942A1 (en) 2000-09-06

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