EP0009156A1 - Circuit-breaker with an additional blow-out loop - Google Patents

Circuit-breaker with an additional blow-out loop Download PDF

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Publication number
EP0009156A1
EP0009156A1 EP79103236A EP79103236A EP0009156A1 EP 0009156 A1 EP0009156 A1 EP 0009156A1 EP 79103236 A EP79103236 A EP 79103236A EP 79103236 A EP79103236 A EP 79103236A EP 0009156 A1 EP0009156 A1 EP 0009156A1
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EP
European Patent Office
Prior art keywords
arc
guide rail
arc guide
loop
blow
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.)
Granted
Application number
EP79103236A
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German (de)
French (fr)
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EP0009156B1 (en
Inventor
Werner Ing.Grad. Ostermann
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OFFERTA DI LICENZA AL PUBBLICO
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Licentia Patent Verwaltungs GmbH
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Priority to AT79103236T priority Critical patent/ATE170T1/en
Publication of EP0009156A1 publication Critical patent/EP0009156A1/en
Application granted granted Critical
Publication of EP0009156B1 publication Critical patent/EP0009156B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • 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
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet

Definitions

  • the invention relates to a circuit breaker with a contact loop forming a blow loop and an arc chamber which is equipped with parallel quenching plates arranged at an angle to the blow loop, and with arc guide rails, one of which flanks the quenching plate stack on one side and in front of the quenching plates in the running area of the Arc parallel to it, a conductor piece belonging to an additional blow loop is provided.
  • an additional blow coil is connected to an arc baffle, which is only switched on when the arc is jumped from a movable contact piece onto the arc baffle into the circuit.
  • the blow coil lies to the side of the contact pieces and requires a special space for their accommodation, which is unfavorable for the switch dimensions.
  • An additional blow coil is also provided in a switch described in DE-AS 1 182 323, which is connected to a catch electrode.
  • This blow coil forms a resistance which is switched on when the contact opens and only becomes fully effective in its blowing action when an arc formed between the catching electrode and the stationary contact piece is extinguished and only burns between the catching electrode and the movable contact piece.
  • the resistance of the blowing coil must be matched to the two partial arcs that arise.
  • the blow coil in order to be effective for the first arc, the blow coil must be designed to be relatively expensive.
  • the invention has for its object to design the circuit breaker mentioned at the outset such that, using the elements and spaces present in the switch and reducing the dimensions of the housing with high short-circuit currents, rapid arcing into the extinguishing plates of the switch is ensured.
  • this object is achieved in that the additional blowing loop is accommodated in a free space behind the one arc guide rail in a current path which is switched off in normal operation, and in that the part of the arc guide rail which is turned towards the contact arrangement and which is used for the arc discharge projects into the region of the open position of the movable contact piece , so that the additional blowing loop is only activated when the arc is skipped from the movable contact piece to the arc guide rail.
  • the additional blowing loop is expediently formed by a rearward extension of the one arc guide rail.
  • the rear extension can be formed by the guide rail itself, but it can also consist of a welded or otherwise attached conductor piece made of a different material.
  • a bimetallic strip which is in the circuit during normal operation and is used for thermal tripping with the additional blowing loop is switched off when the arc is skipped from the movable contact piece to the arc guide rail from the circuit.
  • the arrangement according to the invention is very advantageous in that the blow loop is only switched on in the circuit when there is a short-circuit cut-off and thus does not involve any stress. This will cause the arc to jump from the movable contact piece to the arc guide rail relieved that the bimetallic strip, which has approximately the same impedance with the blow loop, is switched off when skipping.
  • the arc therefore has approximately the same potential conditions on the arc guide rail and is therefore slightly inclined to gain a foothold on the rail.
  • the short-circuit cut-off does not place unnecessary stress on the bimetallic strip, so that any misalignments that may occur are avoided by high currents.
  • the illustration shows schematically the arc extinguishing device and the tripping elements of a circuit breaker.
  • an arc chamber 1 indicated by dashed lines, there are quenching plates 2, a contact arrangement 3, 4 and arc guide rails 5, 6 parallel to the chamber bottom wall.
  • the arc guide rail 6, on which the stationary contact piece 3 is attached, is connected on the one hand to a magnetic tripping coil 7, which in turn is connected is connected at its other end to a connecting terminal 8.
  • the other end of the arc guide rail 6 leads to a leg 17 of the iron yoke of the trigger coil 7 which is arranged parallel to the uppermost one of the quenching plates 2.
  • the arc guide rail 5 flanks the lower quenching plate of the stack with an extension 5a and forms a triangular blow loop with a rear extension 5b which is the longest side 5'b parallel to the part of the arc guide rail 5 used for the arc discharge.
  • the arc guide rail 5 is arranged obliquely in front of the quenching plates, so that a free space 9 is formed behind it, in which the blow loop 5b is located.
  • the side 5'b of the blow loop is separated from the actual arc guide rail by insulation 10.
  • the sides 5 "b of the blow loop are in the edge area of the free space 9, ie on the bottom surface and a side surface of the arc chamber 1.
  • the arc guide rail 5 ends with the part used for the arc running in the area of the open position of a pivoting contact lever 16 carrying the movable contact piece 4 and passes behind into the blow loop 5b.
  • An end 5c protruding from the arc chamber is used to fasten a bimetallic strip 11, which in turn is connected with the free end to the swivel contact lever 16 via a flexible line 12.
  • a supply line 15 connected to a connecting terminal 14 also leads to the fastening point 13 of the bimetal strip.
  • the current runs along the arrows shown from the connecting terminal 14 via the feed line 15, the bimetal strip 11 and the flexible line 12 to the pivoting contact lever 16 and from there via the contact arrangement 3, 4 to the trigger coil 7 and finally from there to the connecting terminal 8
  • the swivel contact lever 16 changes to the switch position 16 'shown in dashed lines, the arc drawn between its contact piece 4 and the fixed contact piece 3 jumping over from the swivel contact lever to the arc guide rail 5 after reaching the open position (arc position a).
  • the bimetallic strip 11 is switched off from the circuit and the blow loop 5b is switched into the circuit.
  • connection terminal 14 via the blow loop 5b, the arc guide rail 5, via the arc to the arc guide rail 6 and from there via the trigger coil 7 back to the connection terminal 8. Due to the blowing effect of the power supply lines and the additional blow loop 5b, the arc is via the Positions b and c are driven into the stack of quenching sheets and extinguished there.

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  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Abstract

1. Line protection relay with a contact arrangement (3, 4) forming a blow-out loop and an arcing chamber which is equipped with parallel metal quenching plates arranged at an angle to the blow-out loop as well as with arc guide rails (5, 6), of which the one (5) flanks the metal quenching plate stack on the one side and a conductor piece (side 5'b) belonging to an additional blow-out loop is provided parallel to it in the travelling range of the arc in front of the metal quenching plates, characterized thereby, that the additional blow-out loop is housed in a free space (9) behind the one arc guide rail (5) in a current circuit which is switched off in normal operation and that furthermore that part of the arc guide rail (5), which faces the contact arrangement (3, 4) and is used for the course of the arc, projects into the range of the opening position of the movable contact piece (4) so that the putting into circuit of the additional blow-out loop takes place only on the jumping of the arc over from the movable contact piece (4) to the arc guide rail (5).

Description

Die Erfindung bezieht sich auf einen Leitungsschutzschalter mit einer eine Blasschleife bildenden Kontaktanordnung und einer Lichtbogenkammer, die mit zur Blasschleife im Winkel angeordneten parallelen Löschblechen ausgerüstet ist sowie mit Lichtbogenleitschienen, von denen die eine den Löschblechstapel auf der einen Seite flankiert und vor den Löschblechen im Laufbereich des Lichtbogens parallel zu ihr ein zu einer zusätzlichen Blasschleife gehörendes Leiterstück vorgesehen ist.The invention relates to a circuit breaker with a contact loop forming a blow loop and an arc chamber which is equipped with parallel quenching plates arranged at an angle to the blow loop, and with arc guide rails, one of which flanks the quenching plate stack on one side and in front of the quenching plates in the running area of the Arc parallel to it, a conductor piece belonging to an additional blow loop is provided.

Eine derartige Konstruktion ist aus der Zeitschrift "der elektromeister + deutsches elektrohandwerk/de" 1977 Seite 1271 bis 1274 bekannt. Hierbei umschließt allerdings die zusätzliche Blasschleife die gesamte Lichtbogenkammer, so daß dadurch der Innenwiderstand des Schalters erhöht wird. Die bei Nennbetrieb ständig vom Strom durchflossene Blasschleife verursacht somit eine höhere Erwärmung des Schalters, was sich besonders ungünstig bei höheren Nennstromstärken auswirkt.Such a construction is known from the magazine "der elektromeister + deutsches elektrohandwerk / de" 1977 pages 1271 to 1274. Here, however, the additional blow loop encloses the entire arc chamber, so that the internal resistance of the switch is increased. The blow loop which is constantly flowed through by the current during rated operation therefore causes the switch to heat up more, which has a particularly unfavorable effect at higher rated current intensities.

Bei einem Schalter nach der US-PS 2 769 066 ist ebenfalls hin- ter einem Lichtbogenleitblech eine zusätzliche Blasschleife angeordnet. Diese Blasschleife, die auch ständig im Stromkreis des Schalters liegt, befindet sich allerdings nur in dem Freiraum hinter dem Lichtbogenleitblech. Sie hat somit einen geringeren Innenwiderstand als die des vorerwähnten Schalters, ist aber nicht nur wegen der ständigen Stromdurchsetzung nachteilig, sondern auch deshalb, weil sie nur mit einem verhältnismäßig kleinen Leiterstück dicht hinter der Lichtbogenleitschiene liegt und somit nur eine ungenügende Wirkung auf den LichtbogenfuBpunkt ausübt.In a switch according to US Pat. No. 2,769,066, an additional blow loop is also arranged behind an arc guide plate. This blow loop, which is always in the circuit of the switch, is only in the space behind the arc baffle. It therefore has a lower internal resistance than that of the aforementioned switch, but is disadvantageous not only because of the constant current penetration, but also because it is only behind the arc guide rail with a relatively small conductor section and thus has an insufficient effect on the arc base.

Bei einem Überstromschnellschalter nach der DE-PS 465 431 ist eine zusätzliche Blasspule an ein Lichtbogenleitblech angeschlossen, die erst beim Überspringen des Lichtbogens von einem beweglichen Kontaktstück auf das Lichtbogenleitblech in den Stromkreis eingeschaltet wird. Die Blasspule liegt hierbei allerdings seitlich von den Kontaktstücken und benötigt für ihre Unterbringung einen besonderen Raum, der für die Schalterabmessungen ungünstig ist.In an overcurrent high-speed switch according to DE-PS 465 431, an additional blow coil is connected to an arc baffle, which is only switched on when the arc is jumped from a movable contact piece onto the arc baffle into the circuit. However, the blow coil lies to the side of the contact pieces and requires a special space for their accommodation, which is unfavorable for the switch dimensions.

Auch bei einem in der DE-AS 1 182 323 beschriebenen Schalter ist eine zusätzliche Blasspule vorgesehen, die mit einer Fangelektrode in Verbindung steht. Diese Blasspule bildet einen bei Kontaktöffnung eingeschalteten Widerstand und wird in ihrer Blaswirkung erst voll wirksam, wenn ein zwischen Fangelektrode und ortsfestem Kontaktstück gebildeter Lichtbogen zum Erlöschen gebracht ist und nur noch zwischen der Fangelektrode und dem beweglichen Kontaktstück brennt. Abgesehen von der geringeren Anfangsblaswirkung ist hierbei auch nachteilig, daß die Blasspule in ihrem Widerstandswert auf die beiden entstehenden Teillichtbögen abgestimmt sein muß. Außerdem muß die Blasspule, um auch für den ersten Lichtbogen wirksam zu sein, verhältnismäßig aufwendig ausgelegt werden.An additional blow coil is also provided in a switch described in DE-AS 1 182 323, which is connected to a catch electrode. This blow coil forms a resistance which is switched on when the contact opens and only becomes fully effective in its blowing action when an arc formed between the catching electrode and the stationary contact piece is extinguished and only burns between the catching electrode and the movable contact piece. Apart from the lower initial blowing effect, it is also disadvantageous here that the resistance of the blowing coil must be matched to the two partial arcs that arise. In addition, in order to be effective for the first arc, the blow coil must be designed to be relatively expensive.

Der Erfindung liegt die Aufgabe zugrunde, den eingangs erwähnten Leitungsschutzschalter so auszugestalten, daß unter Ausnutzung der im Schalter vorhandenen Elemente und Räume bei Verkleinerung der Gehäuseabmessungen bei hohen Kurzschlußströmen ein schneller Lichtbogeneinlauf in die Löschbleche des Schalters gewährleistet ist.The invention has for its object to design the circuit breaker mentioned at the outset such that, using the elements and spaces present in the switch and reducing the dimensions of the housing with high short-circuit currents, rapid arcing into the extinguishing plates of the switch is ensured.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die zusätzliche Blasschleife in einem Freiraum hinter der einen Lichtbogenleitschiene in einem im normalen Betrieb abgeschalteten Strompfad untergebracht ist und daß ferner der der Kontaktanordnung zugekehrte für den Lichtbogenablauf genutzte Teil der Lichtbogenleitschiene in den Bereich der Öffnungsstellung des beweglichen Kontaktstückes ragt, so daß die Zuschaltung der zusätzlichen Blasschleife erst beim Überspringen des Lichtbogens vom beweglichen Kontaktstück auf die Lichtbogenleitschiene erfolgt. Zweckmäßigerweise ist die zusätzliche Blasschleife durch eine rückwärtige Verlängerung der einen Lichtbogenleitschiene gebildet. Die rückwärtige Verlängerung kann durch die Leitschiene selbst gebildet sein, sie kann aber auch aus einem angeschweißten oder anderweitig befestigten Leiterstück aus anderem Material bestehen. Nach einem Weiterbildungsgedanken der Erfindung wird ein bei normalem Betrieb im Stromkreis liegender zur thermischen Auslösung dienender mit der zusätzlichen Blasschleife etwa impedanzgleicher Bimetallstreifen beim Überspringen des Lichtbogens vom beweglichen Kontaktstück auf die Lichtbogenleitschiene aus dem Stromkreis ausgeschaltet.According to the invention, this object is achieved in that the additional blowing loop is accommodated in a free space behind the one arc guide rail in a current path which is switched off in normal operation, and in that the part of the arc guide rail which is turned towards the contact arrangement and which is used for the arc discharge projects into the region of the open position of the movable contact piece , so that the additional blowing loop is only activated when the arc is skipped from the movable contact piece to the arc guide rail. The additional blowing loop is expediently formed by a rearward extension of the one arc guide rail. The rear extension can be formed by the guide rail itself, but it can also consist of a welded or otherwise attached conductor piece made of a different material. According to a further development idea of the invention, a bimetallic strip which is in the circuit during normal operation and is used for thermal tripping with the additional blowing loop is switched off when the arc is skipped from the movable contact piece to the arc guide rail from the circuit.

Die erfindungsgemäße Anordnung ist insofern sehr vorteilhaft, da die Blasschleife nur bei einer KurzschluBabschaltung in den Stromkreis eingeschaltet wird und somit keine Belastung mit sich bringt. Das Überspringen des Lichtbogens von dem beweglichen Kontaktstück zu der Lichtbogenleitschiene wird dadurch erleichtert, daß beim Überspringen der mit der Blasschleife etwa impedanzgleiche Bimetallstreifen ausgeschaltet wird. Der Lichtbogen findet an der Lichtbogenleitschiene somit etwa gleiche Potentialverhältnisse vor und ist daher leicht geneigt, auf der Schiene Fuß zu fassen. Außerdem wird durch die Kurzschlußabschaltung der Bimetallstreifen nicht unnötig belastet, so daß durch hohe Stromstärken evtl. auftretende Dejustierungen vermieden werden.The arrangement according to the invention is very advantageous in that the blow loop is only switched on in the circuit when there is a short-circuit cut-off and thus does not involve any stress. This will cause the arc to jump from the movable contact piece to the arc guide rail relieved that the bimetallic strip, which has approximately the same impedance with the blow loop, is switched off when skipping. The arc therefore has approximately the same potential conditions on the arc guide rail and is therefore slightly inclined to gain a foothold on the rail. In addition, the short-circuit cut-off does not place unnecessary stress on the bimetallic strip, so that any misalignments that may occur are avoided by high currents.

Anhand der Zeichnung sei die Erfindung an einem Ausführungsbeispiel näher erläutert.The invention will be explained in more detail using an exemplary embodiment with reference to the drawing.

Die Darstellung zeigt schematisch die Lichtbogenlöscheinrichtung und die Auslöseelemente eines Leitungsschutzschalters. In einer gestrichelt angedeuteten Lichtbogenkammer 1 befinden sich parallel zur Kammerbodenwand Löschbleche 2, eine Kontaktanordnung 3, 4 und Lichtbogenleitschienen 5, 6. Die Lichtbogenleitschiene 6, auf der das ortsfeste Kontaktstück 3 angebracht ist, steht einerseits mit einer magnetischen Auslösespule 7 in Verbindung, die ihrerseits mit ihrem anderen Ende an eine Anschlußklemme 8 angeschlossen ist. Das andere Ende der Lichtbogenleitschiene 6 führt zu einem parallel zu dem obersten der Löschbleche 2 angeordneten Schenkel 17 des Eisenrückschlusses der Auslösespule 7. Die Lichtbogenleitschiene 5 flankiert mit einer Verlängerung 5a das untere Löschblech des Stapels und bildet mit einer rückwärtigen Verlängerung 5b eine dreieckförmige Blasschleife, von der die längste Seite 5'b parallel zu dem für den Lichtbogenablauf genutzten Teil der Lichtbogenleitschiene 5 liegt. Die Lichtbogenleitschiene 5 ist schräg vor den Löschblechen angeordnet, so daß hinter ihr ein Freiraum 9 gebildet ist, in dem sich die Blasschleife 5b befindet. Die Seite 5'b der Blasschleife ist durch eine Isolierung 10 von der eigentlichen Lichtbogenleitschiene getrennt. Die Seiten 5"b der Blasschleife liegen im Randbereich des Freiraumes 9, d. h. an der Bodenfläche und einer Seitenfläche der Lichtbogenkammer 1. Die Lichtbogenleitschiene 5 endet mit dem für den Lichtbogenlauf genutzten Teil im Bereich der Öffnungsstellung eines das bewegliche Kontaktstück 4 tragenden Schwenkkontakthebels 16 und geht dahinter in die Blasschleife 5b über. Ein aus der Lichtbogenkammer herausragendes Ende 5c dient zur Befestigung eines Bimetallstreifens 11, der seinerseits mit seinem freien Ende über eine flexible Leitung 12 mit dem Schwenkkontakthebel 16 in Verbindung steht. Zu der Befestigungsstelle 13 des Bimetallstreifens führt auch eine mit einer Anschlußklemme 14 in Verbindung stehende Zuleitung 15.The illustration shows schematically the arc extinguishing device and the tripping elements of a circuit breaker. In an arc chamber 1, indicated by dashed lines, there are quenching plates 2, a contact arrangement 3, 4 and arc guide rails 5, 6 parallel to the chamber bottom wall. The arc guide rail 6, on which the stationary contact piece 3 is attached, is connected on the one hand to a magnetic tripping coil 7, which in turn is connected is connected at its other end to a connecting terminal 8. The other end of the arc guide rail 6 leads to a leg 17 of the iron yoke of the trigger coil 7 which is arranged parallel to the uppermost one of the quenching plates 2. The arc guide rail 5 flanks the lower quenching plate of the stack with an extension 5a and forms a triangular blow loop with a rear extension 5b which is the longest side 5'b parallel to the part of the arc guide rail 5 used for the arc discharge. The arc guide rail 5 is arranged obliquely in front of the quenching plates, so that a free space 9 is formed behind it, in which the blow loop 5b is located. The side 5'b of the blow loop is separated from the actual arc guide rail by insulation 10. The sides 5 "b of the blow loop are in the edge area of the free space 9, ie on the bottom surface and a side surface of the arc chamber 1. The arc guide rail 5 ends with the part used for the arc running in the area of the open position of a pivoting contact lever 16 carrying the movable contact piece 4 and passes behind into the blow loop 5b. An end 5c protruding from the arc chamber is used to fasten a bimetallic strip 11, which in turn is connected with the free end to the swivel contact lever 16 via a flexible line 12. A supply line 15 connected to a connecting terminal 14 also leads to the fastening point 13 of the bimetal strip.

Der Strom verläuft bei geschlossenen Schaltstücken entlang der eingezeichneten Pfeile von der Anschlußklemme 14 über die Zuleitung 15, den Bimetallstreifen 11 und die flexible Leitung 12 zu dem Schwenkkontakthebel 16 und von dort über die Kontaktanordnung 3, 4 zur Auslösespule 7 und schließlich von dort zur Anschlußklemme 8. Beim Auftreten eines Kurzschlusses geht der Schwenkkontakthebel 16 in die gestrichelt dargestellte Schaltstellung 16' über, wobei der zwischen seinem Kontaktstück 4 und dem ortsfesten Kontaktstück 3 gezogene Lichtbogen nach Erreichen der Öffnungsstellung von dem Schwenkkontakthebel zu der Lichtbogenleitschiene 5 überspringt (Lichtbogenposition a). Durch das Überspringen des Lichtbogens wird der Bimetallstreifen 11 aus dem Stromkreis ausgeschaltet und dafür die Blasschleife 5b in den Stromkreis eingeschaltet. Der Strom verläuft jetzt von der Anschlußklemme 14 über die Blasschleife 5b, die Lichtbogenleitschiene 5, über den Lichtbogen zur Lichtbogenleitschiene 6 und von dort über die Auslösespule 7 wieder zur Anschlußklemme 8. Durch die Blaswirkung der Stromzuführungsleitungen und der zusätzlichen Blasschleife 5b wird der Lichtbogen über die Positionen b und c in den Löschblechstapel hineingetrieben und dort zum Erlöschen gebracht.With closed contact pieces, the current runs along the arrows shown from the connecting terminal 14 via the feed line 15, the bimetal strip 11 and the flexible line 12 to the pivoting contact lever 16 and from there via the contact arrangement 3, 4 to the trigger coil 7 and finally from there to the connecting terminal 8 When a short circuit occurs, the swivel contact lever 16 changes to the switch position 16 'shown in dashed lines, the arc drawn between its contact piece 4 and the fixed contact piece 3 jumping over from the swivel contact lever to the arc guide rail 5 after reaching the open position (arc position a). By jumping over the arc, the bimetallic strip 11 is switched off from the circuit and the blow loop 5b is switched into the circuit. The current now runs from the connection terminal 14 via the blow loop 5b, the arc guide rail 5, via the arc to the arc guide rail 6 and from there via the trigger coil 7 back to the connection terminal 8. Due to the blowing effect of the power supply lines and the additional blow loop 5b, the arc is via the Positions b and c are driven into the stack of quenching sheets and extinguished there.

Claims (4)

1 Leitungsschutzschalter mit einer eine Blasschleife bildenden Kontaktanordnung und einer Lichtbogenkammer, die mit zur Blasschleife im Winkel angeordneten parallelen Löschblechen ausgerüstet ist sowie mit Lichtbogenleitschienen, von denen die eine den Löschblechstapel auf der einen Seite flankiert und vor den Löschblechen im Laufbereich des Lichtbogens parallel zu ihr ein zu einer zusätzlichen Blasschleife gehörendes Leiterstück vorgesehen ist, dadurch gekennzeichnet, daß die zusätzliche Blasschleife in einem Freiraum (9) hinter der einen Lichtbogenleitschiene (5) in einem im normalen Betrieb abgeschalteten Stromkreis untergebracht ist und daß ferner der der Kontaktanordnung (3, 4) zugekehrte für den Lichtbogenablauf genutzte Teil der Lichtbogenleitschiene (5) in den Bereich der Öffnungsstellung des beweglichen Kontaktstückes (4) ragt, so daß die Zuschaltung der zusätzlichen Blasschleife erst beim Überspringen des Lichtbogens vom beweglichen Kontaktstück (4) auf die Lichtbogenleitschiene (5) erfolgt.1 miniature circuit breaker with a contact arrangement forming a blow loop and an arc chamber, which is equipped with parallel quenching plates arranged at an angle to the blow loop, and with arc guide rails, one of which flanks the stack of quenching plates on one side and in front of the quenching plates in the running area of the arc parallel to it A piece of conductor belonging to an additional blow loop is provided, characterized in that the additional blow loop is accommodated in a free space (9) behind the one arc guide rail (5) in a circuit which is switched off during normal operation, and that the contact arrangement (3, 4) also faces part of the arc guide rail (5) used for the arc discharge protrudes into the area of the open position of the movable contact piece (4), so that the additional blowing loop is only switched on when the arc is skipped from the movable contact piece (4) to the arc guide slide ene (5) takes place. 2 Leitungsschutzschalter nach Anspruch 1, dadurch gekennzeichnet, daß die zusätzliche Blasschleife durch eine rückwärtige Verlängerung (5b) der einen Lichtbogenleitschiene (5) gebildet ist.2 circuit breaker according to claim 1, characterized in that the additional blow loop is formed by a rear extension (5b) of an arc guide rail (5). 3 Leitungsschutzschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß ein bei normalem Betrieb im Stromkreis liegender zur thermischen Auslösung dienender, mit der zusätzlichen Blasschleife etwa impedanzgleicher Bimetallstreifen (11) beim Überspringen des Lichtbogens vom beweglichen Kontaktstück (4) auf die Lichtbogenleitschiene (5) aus dem Stromkreis ausgeschaltet wird.3 circuit breaker according to claim 1 or 2, characterized in that a during normal operation in the circuit for thermal tripping, with the additional blow loop approximately impedance-equal bimetallic strip (11) when jumping the arc from the movable contact piece (4) on the arc guide rail (5) is switched off from the circuit. 4 Leitungsschutzschalter nach Anspruch 2, dadurch gekennzeichnet, daß die zusätzliche Blasschleife durch Abwinklungen der rückwärtigen Verlängerung der Lichtbogenleitschiene (5) dreieckförmig ausgebildet ist, wobei die Hypotenuse die zur Lichtbogenleitschiene (5) parallele Seite bildet, während die beiden Katheten in den Randbereichen des Freiraumes (9) hinter der Lichtbogenleitschiene (5) angeordnet sind.4 circuit breaker according to claim 2, characterized in that the additional blow loop is formed triangular by angling the rear extension of the arc guide rail (5), the hypotenuse forming the side parallel to the arc guide rail (5), while the two cathets in the edge areas of the free space ( 9) are arranged behind the arc guide rail (5).
EP79103236A 1978-09-21 1979-09-01 Circuit-breaker with an additional blow-out loop Expired EP0009156B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79103236T ATE170T1 (en) 1978-09-21 1979-09-01 CIRCUIT BREAKER WITH ADDITIONAL BLOW LOOP.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2841004A DE2841004C2 (en) 1978-09-21 1978-09-21 Circuit breaker with additional blow loop
DE2841004 1978-09-21

Publications (2)

Publication Number Publication Date
EP0009156A1 true EP0009156A1 (en) 1980-04-02
EP0009156B1 EP0009156B1 (en) 1981-08-26

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Family Applications (1)

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EP79103236A Expired EP0009156B1 (en) 1978-09-21 1979-09-01 Circuit-breaker with an additional blow-out loop

Country Status (3)

Country Link
EP (1) EP0009156B1 (en)
AT (1) ATE170T1 (en)
DE (1) DE2841004C2 (en)

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EP0123090A2 (en) * 1983-03-25 1984-10-31 Siemens Aktiengesellschaft Circuit breaker, especially an automatic cut-off switch
FR2567323A1 (en) * 1984-07-09 1986-01-10 Merlin Gerin Miniature electric circuit breaker with multiple contacts
GB2169450A (en) * 1984-12-21 1986-07-09 Schupa Elektro Gmbh & Co Kg A leakage current protection circuit breaker
GB2172147A (en) * 1985-03-04 1986-09-10 Westinghouse Electric Corp Circuit breaker
US4969960A (en) * 1988-02-12 1990-11-13 Thyssen Edelstahlwerke Ag Method for increasing the resistance to thermal shocks in heating conductor materials
WO1990013903A1 (en) * 1989-05-09 1990-11-15 Heinrich Kopp Gmbh & Co. Kg Automatic cutout
EP0444283A1 (en) * 1990-02-24 1991-09-04 Licentia Patent-Verwaltungs-GmbH Automatic cutout with an electromagnetic trip
EP0706245A3 (en) * 1994-10-07 1996-09-11 Phoenix Contact Gmbh & Co Overvoltage protection element
FR2736462A1 (en) * 1995-07-08 1997-01-10 Abb Patent Gmbh ARC EXTINGUISHING DEVICE FOR AN ELECTRIC SWITCH, ESPECIALLY FOR A LINE PROTECTION CIRCUIT BREAKER
EP0980085A2 (en) * 1998-08-13 2000-02-16 Siemens Aktiengesellschaft Power circuit breaker with blast coil operated by the arc
WO2005048282A1 (en) * 2003-11-11 2005-05-26 Siemens Aktiengesellschaft Arc quenching system

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DE3619240A1 (en) * 1986-06-07 1987-12-10 Kloeckner Moeller Elektrizit Line protection circuit breaker having a contact arrangement which forms a blowing device
DE3625425A1 (en) * 1986-07-28 1988-02-04 Bbc Brown Boveri & Cie CIRCUIT BREAKER
DE3803849C1 (en) * 1988-02-09 1989-08-10 Flohr, Peter, Dipl.-Ing., 7790 Messkirch, De High-power switching path for protective switching devices
US5214402A (en) * 1991-12-23 1993-05-25 North American Philips Corporation Trip link latch and interpole link for a circuit breaker
US5185590A (en) * 1991-12-23 1993-02-09 North American Philips Corporation Magnetic blow-out circuit breaker with booster loop/arc runner
DE4306229A1 (en) * 1993-02-27 1994-09-01 Abb Patent Gmbh Switchgear with a thermal and a magnetic release
DE4315485A1 (en) * 1993-05-10 1994-11-17 Abb Patent Gmbh Electrical switch
IT1275641B1 (en) * 1994-10-18 1997-10-17 Bticino Spa THERMAL PROTECTION GROUP FOR AUTOMATIC SWITCH
CN102592909B (en) * 2012-02-22 2013-12-25 西安交通大学 Magnetic blast arc quenching device for DC (direct current) circuit breaker
DE102012212236A1 (en) 2012-07-12 2014-01-16 Siemens Aktiengesellschaft Protection switching device and magnetic yoke
DE102012223168A1 (en) 2012-08-29 2014-03-06 Siemens Aktiengesellschaft Electromechanical switching device, has arc-quenching device comprising first permanent magnet and second permanent magnet that are arranged on both sides of switching contact, where magnets are magnetized in opposite directions
CN103337393B (en) * 2013-05-31 2016-05-04 浙江天正电气股份有限公司 A kind of breaker of plastic casing and the arcing device that goes out thereof
DE102017212033A1 (en) 2017-07-13 2019-01-17 Siemens Aktiengesellschaft DC arc extinguishing device and electromechanical DC switching device
DE102020211531A1 (en) 2020-09-15 2022-03-17 Siemens Aktiengesellschaft Low voltage circuit breaker

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123090A2 (en) * 1983-03-25 1984-10-31 Siemens Aktiengesellschaft Circuit breaker, especially an automatic cut-off switch
EP0123090A3 (en) * 1983-03-25 1985-05-29 Siemens Aktiengesellschaft Circuit breaker, especially an automatic cut-off switch
FR2567323A1 (en) * 1984-07-09 1986-01-10 Merlin Gerin Miniature electric circuit breaker with multiple contacts
GB2169450A (en) * 1984-12-21 1986-07-09 Schupa Elektro Gmbh & Co Kg A leakage current protection circuit breaker
GB2169450B (en) * 1984-12-21 1989-09-20 Schupa Elektro Gmbh & Co Kg A leakage current protection circuit breaker
GB2172147A (en) * 1985-03-04 1986-09-10 Westinghouse Electric Corp Circuit breaker
AU586665B2 (en) * 1985-03-04 1989-07-20 Westinghouse Electric Corporation Current limiting solenoid operated circuit breaker
GB2172147B (en) * 1985-03-04 1989-11-01 Westinghouse Electric Corp Current limiting circuit breaker
US4969960A (en) * 1988-02-12 1990-11-13 Thyssen Edelstahlwerke Ag Method for increasing the resistance to thermal shocks in heating conductor materials
WO1990013903A1 (en) * 1989-05-09 1990-11-15 Heinrich Kopp Gmbh & Co. Kg Automatic cutout
EP0444283A1 (en) * 1990-02-24 1991-09-04 Licentia Patent-Verwaltungs-GmbH Automatic cutout with an electromagnetic trip
EP0706245A3 (en) * 1994-10-07 1996-09-11 Phoenix Contact Gmbh & Co Overvoltage protection element
FR2736462A1 (en) * 1995-07-08 1997-01-10 Abb Patent Gmbh ARC EXTINGUISHING DEVICE FOR AN ELECTRIC SWITCH, ESPECIALLY FOR A LINE PROTECTION CIRCUIT BREAKER
EP0980085A2 (en) * 1998-08-13 2000-02-16 Siemens Aktiengesellschaft Power circuit breaker with blast coil operated by the arc
EP0980085A3 (en) * 1998-08-13 2000-08-02 Siemens Aktiengesellschaft Power circuit breaker with blast coil operated by the arc
WO2005048282A1 (en) * 2003-11-11 2005-05-26 Siemens Aktiengesellschaft Arc quenching system

Also Published As

Publication number Publication date
DE2841004C2 (en) 1980-10-02
ATE170T1 (en) 1981-09-15
DE2841004B1 (en) 1980-02-14
EP0009156B1 (en) 1981-08-26

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