EP0752153B2 - Arc quenching chamber with three barriers for the passage of arc gasses - Google Patents

Arc quenching chamber with three barriers for the passage of arc gasses Download PDF

Info

Publication number
EP0752153B2
EP0752153B2 EP95913022A EP95913022A EP0752153B2 EP 0752153 B2 EP0752153 B2 EP 0752153B2 EP 95913022 A EP95913022 A EP 95913022A EP 95913022 A EP95913022 A EP 95913022A EP 0752153 B2 EP0752153 B2 EP 0752153B2
Authority
EP
European Patent Office
Prior art keywords
barrier
webs
arc
quenching
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
EP95913022A
Other languages
German (de)
French (fr)
Other versions
EP0752153B1 (en
EP0752153A1 (en
Inventor
Karl-Heinz Manthe
Martin Böttcher
Günter SEIDLER-STAHL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6513662&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0752153(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0752153A1 publication Critical patent/EP0752153A1/en
Publication of EP0752153B1 publication Critical patent/EP0752153B1/en
Application granted granted Critical
Publication of EP0752153B2 publication Critical patent/EP0752153B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342Venting arrangements for arc chutes

Definitions

  • the invention relates to an arc quenching chamber for a circuit breaker with a chamber housing, Arc guide rails arranged in the chamber housing and supported at a mutual distance Extinguishing sheets as well as with one above the Extinguishing plates arranged, three barriers Cooling arrangement for escaping arc gases, the first barrier immediately above the Extinguishing sheets and the second barrier at a distance from the first barrier is arranged and wherein the first and the second barrier parallel to the end faces of the quenching plates have directed through openings, furthermore with a following the second barrier outside through the third one with outlet openings Barrier closed cooling chamber.
  • Another arc quenching chamber is known per se at which the cooling arrangement a immediately above the Extinguishing plates arranged first barrier, one at a distance of the second barrier arranged second barrier, one itself the second barrier connecting the cooling chamber and one the Cooling chamber includes a third barrier closing to the outside.
  • the first and second barriers are part of the Chamber housing.
  • the cooling chamber and the third barrier are formed by a chamber attachment, which as a separate Assembly placed on the finished arc quenching chamber and is connected to this.
  • the first barrier formed by webs, each with one half length with Housing halves of the chamber housing are formed.
  • the second The barrier is formed by webs abutting one another at the end formed on in one piece with the housing halves trained, forming an outer wall of the chamber housing Walls are formed.
  • the cooling chamber formed by the chamber attachment is through several trained in the form of filters and grates Partial barriers penetrated by a third barrier and by a the partial barriers in the form of an upper grate to the outside completed.
  • the webs are in this arc quenching chamber of the first barrier in double the value of the pitch of the Extinguishing sheets spaced and form the abutment for each Splitter.
  • the bridges of the second barrier are opposite the Rise the first barrier around the pitch of the Extinguishing sheets are staggered.
  • the width corresponds and the height of the webs of the first barrier and the webs of the second barrier about the division dimension of the quenching plates (Low-voltage circuit breakers of the "MASTERPACT DC" type from Merlin Gerin, FR).
  • the invention has for its object the cooling effect the arrangement of barriers with the lowest possible Dimensions and long life improve that on the exit side of the arc quenching chamber only a minimal safety margin too grounded components is required.
  • This task is accomplished by an arc quenching chamber with the Characteristics of the Claim 1 solved.
  • the web arrangement is essential more resistant than slotted or perforated plate-shaped Components is executable and therefore the entire Arc quenching chamber for a higher one Arc gas pressure can be designed. Therefore, the invention is particularly suitable for Construction of compact power shaders with high switching capacity.
  • the arrangement forces the arc gases to flow through the first and second barriers into two Change of direction of 90 °, with partial flows the gases above the webs of the first barrier against each other steered and thereby slowed down.
  • the Gases then occur with intensive vortex formation and expansion into the cooling chamber and lose to most of their ionization.
  • On the exit side of the The third barrier is therefore the temperature and the degree of ionization the gases so low that only still a small safety distance to earthed parts to be noted.
  • the first, the second and the third barrier be part of the end body.
  • This design proves to be favorable for the producibility the web arrangement with great strength.
  • every second one of the quenching plates lies on a bridge of the first barrier.
  • a separate one Fastening device for those in between Extinguishing plates can become unnecessary that the webs of the first barrier by an edge Crossbar are connected, which is an abutment for every second, not on one of the webs of the first barrier adjacent fire-fighting sheet forms.
  • the exit openings of the third barrier can slit-like and parallel to the webs of the first and second barriers, but against them offset, arranged in an end wall of the end body his.
  • the End body can be made from a single hollow body thermosetting plastic.
  • FIG. 1 shows an arc quenching chamber Low voltage circuit breaker with one movable switch contact in section.
  • FIG. 2 A top view of the arc quenching chamber according to FIG. 1 shows FIG. 2.
  • FIG. 1 An end piece according to the arc quenching chamber Figures 1 and 2 is in Figure 3 with a view of the the underside facing the interior is shown.
  • Figures 4 and 5 are sections IV-IV and V-V in of Figure 3.
  • the arc extinguishing chamber 1 according to FIG. 1 is part of a low-voltage circuit breaker for use up to 1000 V and a switching capacity to about 100,000 A.
  • the circuit breaker for the rest of the invention is not essential, are only an upper connecting rail 2 with a fixed contact piece 3 and an associated movable contact lever 4 with an electric arc 5 shown.
  • the switch-on position is extended, dash-dotted lines indicate the switch lever is in the off position 4 indicated.
  • the arc quenching chamber 1 has a two-part Chamber housing 6 with a lower shaft body 7 and an end body that terminates this above 8 on.
  • the shaft body 7 In the shaft body 7 are mutually Distance between quenching plates 10 is arranged.
  • This quenching plate arrangement is on both sides by an arc guide rail 11 or 12 completed, the left Arc guide rail 11 with a small distance stationary arcing horn 13 faces and the right arc guide rail 12 at the lower end like this is angled that the movable Contact lever with its arcing horn 5 in the off position at the end of the bend.
  • the quenching plates 10 end close in one plane the upper end of the shaft body 7 and are against Longitudinal displacement through the end body 8 secured.
  • a left end web 16 and a right end web 17 are wider than the webs 15, namely such that the last baffle plate 10 and the subsequent one Arc guide rail 11 or 12 on the End bar 16 or 17 abut.
  • the webs 15 in connection with the end webs 16 and 17 form a first Barrier 20 for arcing gases that arise when switching and that before leaving the free environment are to be cooled and deionized.
  • the cross-sectional shape of the webs 15 and 21 is according to Figures 1 and 4 the same and approximately square shaped.
  • the width b and correspond Height h of the webs 15 and 21 approximately the pitch t the quenching plates 10.
  • a third barrier 24 is through an end wall 23 of the end body 8 is formed.
  • the front wall 23 contains the outlet openings 26 (FIG. 2), through which the cooled and deionized arc gases leave the arc extinguishing chamber 1.
  • the first and second barriers 20 and 22, respectively respectively have only a small mutual distance d ( Figure 4), which is about a quarter of the width b or the height h of the webs is 15 or 21, is between the second and the third barrier 22 or 24 a greater distance provided by which a cooling chamber 25 is formed becomes.
  • the outlet openings 26 of the third barrier 24 are elongated and parallel to the webs 15 and 21 of the first and second barriers 20 and 22 arranged.
  • the webs 15 are the first barrier 20 on the edge side by a cross piece 27 connected with each other. This creates a contact surface also formed for those quenching plates 10 that do not rest against the webs 15 of the first barrier 20.
  • the outlet openings 26 are shorter than the openings formed by the webs 15 and 21.
  • the pitch of the outlet openings 26 is also different of the pitch t ( Figure 1) of the webs 15 and 21 chosen. This avoids a gap the webs 21 just an exit opening 26 faces.
  • the end body 8 protrudes on all sides Edge pieces 30, 31 and 32 and 33 for support on front end of the shaft body 7. Through holes 34 are in the corners of said edge pieces for connecting the end body 8 and the shaft body 7 provided by means of screws 35.
  • the contact lever is used to separate a circuit 4 from the extended position shown in the Position shown in broken lines is moved.
  • the resulting switching arc is switched off by the fixed contact 3 and the arcing horn 5 of the contact lever 4 on the arc guide rails 11 and 12 transferred. Due to magnetic and thermal The switching arc is buoyant then in the quenching plate arrangement (quenching plates 10, FIG 1) and is there in one of the number of quenching plates 10 corresponding number of partial arcs split. The until the switching arc goes out Arcing gases escape through the arrangement of barriers 20, 22 and 24 to the outside. there first practice the webs 15 due to the first barrier 20 their relatively high height and their parallel Flank a directional effect on the gas flow.
  • the partial flows of the gas then meet the lower ones Areas of the webs 21 of the barrier 22 and are due the small distance d between the webs 15 and 21 forced to deflect by about 90 °.
  • Space between two webs 21 of the second barrier 22 hit two redirected partial flows of the arc gases against each other and can space between the webs 21 only after redirection leave by 90 ° in the direction of the cooling chamber 25. This happens with vigorous vortex formation and expansion. This is associated with a strong cooling and one Recombination of load carriers.
  • the dwell time of the arc gases in the cooling chamber 25 is due to the dimensioning of the outlet openings 26 to influence Despite the good effectiveness the described arrangement of barriers 20, 22 and 24 the arrangement described claims only one relatively small part of the total height of the arc quenching chamber 1. Furthermore, no conductive Parts such as wire mesh, mesh made of expanded metal or Similar items needed to get the cooling you want and to effect deionization of the arc gases. Therefore, the described arc quenching chamber stands out 1 also through a great security against electrical flashovers on the exit side of the fire extinguishing plates 10 out. The safety distance to earthed Components are cut to a small size of around 20 - 60 mm decreased.

Landscapes

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

Description

Die Erfindung betrifft eine Lichtbogenlöschkammer für einen Leistungsschalter mit einem Kammergehäuse, in dem Kammergehäuse angeordneten Lichtbogenleitschienen und mit in gegenseitigem Abstand abgestützten Löschblechen sowie mit einer oberhalb der Löschbleche angeordneten, drei Barrieren umfassenden Kühlanordnung für austretende Lichtbogengase, wobei die erste Barriere unmittelbar oberhalb der Löschbleche und die zweite Barriere im Abstand von der ersten Barriere angeordnet ist und wobei die erste und die zweite Barriere parallel zu Stirnflächen der Löschbleche gerichtete Durchtrittsöffnungen besitzen, femer mit einer an die zweite Barriere anschließenden, nach außen durch die mit Austrittsöffnungen versehene dritte Barriere abgeschlossenen Kühlkammer.The invention relates to an arc quenching chamber for a circuit breaker with a chamber housing, Arc guide rails arranged in the chamber housing and supported at a mutual distance Extinguishing sheets as well as with one above the Extinguishing plates arranged, three barriers Cooling arrangement for escaping arc gases, the first barrier immediately above the Extinguishing sheets and the second barrier at a distance from the first barrier is arranged and wherein the first and the second barrier parallel to the end faces of the quenching plates have directed through openings, furthermore with a following the second barrier outside through the third one with outlet openings Barrier closed cooling chamber.

Eine Lichtbogenlöschkammer der vorstehend genannten Art ist durch die US-A-3 005 892 bekannt geworden. Die Barrieren werden hierbei durch geschlitzte bzw. gelochte plattenförmige Einlagestücke im Kammergehäuse gebildet. Diese Bauteile sind im Betrieb des Leistungsschalters sehr hohen Beanspruchungen ausgesetzt. Mit Rücksicht auf eine ausreichende Lebensdauer der Teile ist daher nur eine beschränkte Kühlwirkung erzielbar. Diese wirkt sich auf den Sicherheitsabstand zu geerdeten Bauteilen aus, der beim Einbau des Leistungsschalters in eine Schaltanlage einzuhalten ist, um einen elektrischen Überschlag aufgrund des Austretens heißer ionisierter Gase aus der Lichtbogenlöschkammer zu vermeiden.An arc quenching chamber of the above Art is known from US-A-3 005 892. The barriers are slotted or perforated plate-shaped inserts in the chamber housing educated. These components are in operation the circuit breaker very high loads exposed. With regard to a sufficient lifespan the parts are therefore only limited Cooling effect achievable. This affects the safety distance to earthed components during installation of the circuit breaker in a switchgear is due to an electrical flashover the escape of hot ionized gases from the arc quenching chamber to avoid.

An sich ist eine weitere Lichtbogenlöschkammer bekannt, bei der die Kühlanordnung eine unmittelbar oberhalb der Löschbleche angeordnete erste Barriere, eine im Abstand von der ersten Barriere angeordnete zweite Barriere, eine sich an die zweite Barriere anschließende Kühlkammer und eine die Kühlkammer nach außen abschließende dritte Barriere umfasst. Dabei sind die erste und die zweite Barriere Bestandteil des Kammergehäuses. Die Kühlkammer und die dritte Barriere sind durch einen Kammeraufsatz gebildet, der als gesonderte Baugruppe auf die fertige Lichtbogenlöschkammer aufgesetzt und mit dieser verbunden wird. Hierbei ist die erste Barriere durch Stege gebildet, die je zur halben Länge einteilig mit Gehäusehälften des Kammergehäuses ausgebildet sind. Die zweite Barriere ist durch stirnseitig aneinanderstoßende stege gebildet, die an einteilig mit den Gehäusehälften ausgebildeten, eine Außenwand des Kammergehäuses bildenden Wänden angeformt sind. Dabei sind die durch die stege gebildeten Durchtrittsöffnungen dieser Außenwand kürzer als die durch die Stege gebildeten Durchtrittsöffnungen der ersten Barriere. Die durch den Kammeraufsatz gebildete Kühlkammer ist durch mehrere in Form von Filtern und Rosten ausgebildete Teilbarrieren einer dritten Barriere durchsetzt und durch eine der Teilbarrieren in Form eines oberen Rostes nach außen hin abgeschlossen. Bei dieser Lichtbogenlöschkammer sind die Stege der ersten Barriere im doppelten Wert des Teilungsmaßes der Löschbleche beabstandet und bilden das Widerlager für je ein Löschblech. Die stege der zweiten Barriere sind gegenüber den Stegen der ersten Barriere um das Teilungsmaß der Löschbleche versetzt angeordnet. Hierbei entspricht die Breite und die Höhe der Stege der ersten Barriere und der stege der zweiten Barriere etwa dem Teilungsmaß der Löschbleche (Niederspannungs-Leistungs-schalter des Typs "MASTERPACT DC" der Firma Merlin Gerin, FR).Another arc quenching chamber is known per se at which the cooling arrangement a immediately above the Extinguishing plates arranged first barrier, one at a distance of the second barrier arranged second barrier, one itself the second barrier connecting the cooling chamber and one the Cooling chamber includes a third barrier closing to the outside. The first and second barriers are part of the Chamber housing. The cooling chamber and the third barrier are formed by a chamber attachment, which as a separate Assembly placed on the finished arc quenching chamber and is connected to this. Here is the first barrier formed by webs, each with one half length with Housing halves of the chamber housing are formed. The second The barrier is formed by webs abutting one another at the end formed on in one piece with the housing halves trained, forming an outer wall of the chamber housing Walls are formed. They are through the bridges formed through openings of this outer wall shorter than the passage openings of the first formed by the webs Barrier. The cooling chamber formed by the chamber attachment is through several trained in the form of filters and grates Partial barriers penetrated by a third barrier and by a the partial barriers in the form of an upper grate to the outside completed. The webs are in this arc quenching chamber of the first barrier in double the value of the pitch of the Extinguishing sheets spaced and form the abutment for each Splitter. The bridges of the second barrier are opposite the Rise the first barrier around the pitch of the Extinguishing sheets are staggered. Here the width corresponds and the height of the webs of the first barrier and the webs of the second barrier about the division dimension of the quenching plates (Low-voltage circuit breakers of the "MASTERPACT DC" type from Merlin Gerin, FR).

Der Erfindung liegt die Aufgabe zugrunde, die Kühlwirkung der Anordnung von Barrieren bei möglichst geringen Abmessungen und hoher Lebensdauer derart zu verbessern, daß an der Austrittsseite der Lichtbogenlöschkammer nur ein minimaler Sicherheitsabstand zu geerdeten Bauteilen benötigt wird.The invention has for its object the cooling effect the arrangement of barriers with the lowest possible Dimensions and long life improve that on the exit side of the arc quenching chamber only a minimal safety margin too grounded components is required.

Diese Aufgabe wird durch eine Lichtbogenlöschkammer mit den Merkmalen des Anspruches 1 gelöst.This task is accomplished by an arc quenching chamber with the Characteristics of the Claim 1 solved.

Es erweist sich, daß die Steganordnung wesentlich widerstandsfähiger als geschlitzte bzw. gelochte plattenförmige Bauteile ausführbar ist und daher die gesamte Lichtbogenlöschkammer für einen höheren Druck von Lichtbogengasen ausgelegt werden kann. Daher eignet sich die Erfindung insbesondere für den Bau kompakter Leistungsschatter mit hohem Schaltvermögen.It turns out that the web arrangement is essential more resistant than slotted or perforated plate-shaped Components is executable and therefore the entire Arc quenching chamber for a higher one Arc gas pressure can be designed. Therefore, the invention is particularly suitable for Construction of compact power shaders with high switching capacity.

Die erfindungs-gemäße Anordnung zwingt die Lichtbogengase beim Durchströmen der ersten und der zweiten Barriere zu einer zweimaligen Richtungsänderung von 90°, wobei Teilströme der Gase oberhalb der Stege der ersten Barriere gegeneinander gelenkt und dadurch abgebremst werden. Die Gase treten dann unter intensiver Wirbelbildung und Expansion in die Kühlkammer ein und verlieren dabei zum größten Teil ihre lonisierung. An der Austrittsseite der dritten Barriere sind daher die Temperatur und der lonisierungsgrad der Gase so stark erniedrigt, daß lediglich noch ein geringer Sicherheitsabstand zu geerdeten Teilen zu beachten ist.The according to the invention The arrangement forces the arc gases to flow through the first and second barriers into two Change of direction of 90 °, with partial flows the gases above the webs of the first barrier against each other steered and thereby slowed down. The Gases then occur with intensive vortex formation and expansion into the cooling chamber and lose to most of their ionization. On the exit side of the The third barrier is therefore the temperature and the degree of ionization the gases so low that only still a small safety distance to earthed parts to be noted.

Eine Anordnung von Stegen oberhalb der Löschbleche einer Lichtbogenlöschkammer in der Weise, daß jedes zweite der Löschbleche an einem Steg anliegt, ist durch die DE-A-35 41 514 bekannt geworden. Die Stege bilden dabei zugleich ein Austrittsgitter für Lichtbogengase. Sollen diese soweit abgekühlt werden, daß nur noch ein sehr geringer oder kein nennenswerter Abstand zu geerdeten Bauteilen einzuhalten ist, so wird die normale Lichtbogenlöschkammer mit einem Aufsatzstück versehen, dessen Eintrittsseite sich oberhalb der Steganordnung befindet. Demgegenüber wird durch die Erfindung eine Lichtbogenlöschkammer geschaffen, die keines zusätzlichen Aufsatzstückes bedarf und trotz geringer Abmessungen nureinen minimalen Abstand zu geerdeten Bauteilen erfordert.An arrangement of webs above the quenching plates an arc quenching chamber in such a way that every second one of the quenching plates rests on a web made known by DE-A-35 41 514. The bridges also form an outlet grille for arc gases. Should these be cooled so far that only still a very small or no significant distance to earthed components is to be observed the normal arc quenching chamber with an attachment provided, the entry side is above the web arrangement. In contrast created an arc quenching chamber by the invention, that does not require an additional attachment and, despite its small dimensions, only a minimal one Distance to earthed components required.

Bei der Lichtbogenlöschkammer nach der eingangs genannten US-A-3 005 892 ist die zwischen der zweiten und der dritten Barriere gelegene Kühlkammer als Mischkammer ausgebildet, in die Lichtbogengase nicht nur durch die erste und die zweite Barriere hindurch, sondern auch seitlich an diesen vorbei direkt eintreten können. Nach einer weiteren Ausgestaltung der Erfindung werden demgegenüber jeweils eine Lichtbogenleitschiene und das anschließende Löschblech von einem Endsteg überdeckt, derart, daß Lichtbogengase in die zwischen der zweiten und der dritten Barriere befindlichen Kühlkammer nur entlang den Stegen der zweiten Barriere eintreten können.In the arc quenching chamber after the entry mentioned US-A-3 005 892 is that between the second and the cooling chamber located as the third barrier Mixing chamber trained in the arc gases not only through the first and the second barrier, but also enter directly past the side can. According to a further embodiment of the invention in contrast, each have an arc guide rail and the subsequent quenching sheet from one Covered end web, such that arc gases in those between the second and third barriers Cooling chamber only along the webs of the second barrier can occur.

Neben einer gegenüber geschlitzten plattenförmigen Teilen größeren mechanischen Festigkeit haben die Stege in der eingangs angegebenen Bemessung die Eigenschaft, auf die Lichtbogengase eine stärkere Richtwirkung auszuüben, als dies geschlitzte Platten vermögen.In addition to a slotted plate-shaped Parts have greater mechanical strength the webs in the dimension specified at the beginning Property on the arc gases a stronger Directivity than slotted plates capital.

Bei einer Unterteilung des Kammergehäuses in einen die Löschbleche aufnehmenden Schachtkörper und einen den Schachtkörper oben abschließenden Endkörper, wie dies an sich z. B. durch die DE-C-29 05 854 bekannt geworden ist, können die erste, die zweite und die dritte Barriere Bestandteil des Endkörpers sein. Diese Gestaltung erweist sich als günstig für die Herstellbarkeit der Steganordnung bei großer Festigkeit. Wie bereits erwähnt, liegt jedes zweite der Löschbleche an einem Steg der ersten Barriere an. Eine gesonderte Befestigungseinrichtung für die jeweils dazwischen liegenden Löschbleche kann dadurch entbehrlich werden, daß die Stege der ersten Barriere durch einen randseitigen Quersteg verbunden sind, der ein Widerlager für jedes zweite, nicht an einem der Stege der ersten Barriere anliegende Löschblech bildet. Durch das Aufsetzen des Endkörpers auf den Schachtkörper werden somit alle Löschbleche erfaßt und gegen Verschiebung gesichert.When dividing the chamber housing into one the chute body receiving the quenching plates and one that closes off the shaft body at the top End body, as this z. B. by DE-C-29 05 854 has become known, the first, the second and the third barrier be part of the end body. This design proves to be favorable for the producibility the web arrangement with great strength. As already mentioned, every second one of the quenching plates lies on a bridge of the first barrier. A separate one Fastening device for those in between Extinguishing plates can become unnecessary that the webs of the first barrier by an edge Crossbar are connected, which is an abutment for every second, not on one of the webs of the first barrier adjacent fire-fighting sheet forms. By putting on of the end body on the shaft body all quenching plates recorded and against displacement secured.

Die Austrittsöffnungen der dritten Barriere können schlitzartig ausgebildet und parallel zu den Stegen der ersten und der zweiten Barriere, jedoch gegenüber diesen versetzt, in einer Stirnwand des Endkörpers angeordnet sein. Durch die Zahl und die Anordnung dieser Austrittsöffnungen kann die Verweildauer der Lichtbogengase in der Kühlkammer und ihre Strömungsgeschwindigkeit beeinflußt werden. Dies kann insbesondere dadurch geschehen, daß die Austrittsöffnungen in einer gegenüber den Stegen der ersten und der zweiten Barriere abweichenden Teilung angeordnet sind. Der Endkörper kann als einheitlicher Hohlkörper aus einem duroplastischen Kunststoff hergestellt sein.The exit openings of the third barrier can slit-like and parallel to the webs of the first and second barriers, but against them offset, arranged in an end wall of the end body his. By the number and arrangement of these Exit openings can increase the dwell time of the arc gases in the cooling chamber and their flow rate to be influenced. In particular, this can happen that the outlet openings in one opposite the webs of the first and the second Barrier deviating division are arranged. The End body can be made from a single hollow body thermosetting plastic.

Im Unterschied zu vielfach bisher üblichen Ausblasdämpfem an Lichtbogenlöschkammern weist somit die Lichtbogenlöschkammer nach der Erfindung außer den Löschblechen keine zusätzlichen Metallteile auf, die gesondert herzustellen und zu montieren sind.In contrast to blow-out dampers that have been common in the past of arc quenching chambers thus shows the Arc quenching chamber according to the invention except for Extinguishing sheets no additional metal parts that separate are to be manufactured and assembled.

Die Erfindung wird im folgenden anhand des in den Figuren dargestellten Ausführungsbeispieles näher erläutert.The invention is based on the in the Figures illustrated embodiment explained in more detail.

Die Figur 1 zeigt eine Lichtbogenlöschkammer eines Niederspannungs-Leistungsschalters mit einem bewegbaren Schaltkontakt im Schnitt.1 shows an arc quenching chamber Low voltage circuit breaker with one movable switch contact in section.

Eine Draufsicht der Lichtbogenlöschkammer gemäß der Figur 1 zeigt die Figur 2.A top view of the arc quenching chamber according to FIG. 1 shows FIG. 2.

Ein Endstück der Lichtbogenlöschkammer gemäß den Figuren 1 und 2 ist in der Figur 3 mit Blick auf die dem Innenraum zugewandte Unterseite gezeigt.An end piece according to the arc quenching chamber Figures 1 and 2 is in Figure 3 with a view of the the underside facing the interior is shown.

Die Figuren 4 und 5 sind Schnitte IV-IV bzw. V-V in der Figur 3.Figures 4 and 5 are sections IV-IV and V-V in of Figure 3.

Die Lichtbogenlöschkammer 1 gemäß der Figur 1 ist Bestandteil eines Niederspannungs-Leistungsschalters für den Einsatz bis 1000 V und ein Schaltvermögen bis etwa 100 000 A. Im Hinblick darauf, daß der Aufbau des Leistungsschalters im übrigen für die Erfindung nicht wesentlich ist, sind nur eine obere Anschlußschiene 2 mit einem feststehenden Schaltstück 3 und ein zugehöriger bewegbarer Kontakthebel 4 mit einem Lichtbogenhom 5 gezeigt. Ausgezogen ist die Einschaltstellung, strichpunktiert die Ausschaltstellung des Kontakthebels 4 angedeutet.The arc extinguishing chamber 1 according to FIG. 1 is part of a low-voltage circuit breaker for use up to 1000 V and a switching capacity to about 100,000 A. In view of the structure the circuit breaker for the rest of the invention is not essential, are only an upper connecting rail 2 with a fixed contact piece 3 and an associated movable contact lever 4 with an electric arc 5 shown. The switch-on position is extended, dash-dotted lines indicate the switch lever is in the off position 4 indicated.

Die Lichtbogenlöschkammer 1 weist ein zweiteiliges Kammergehäuse 6 mit einem unteren Schachtkörper 7 und einen diesen oben abschließenden Endkörper 8 auf. In dem Schachtkörper 7 sind mit gegenseitigem Abstand Löschbleche 10 angeordnet. Diese Löschblechanordnung wird beideseitig durch je eine Lichtbogenleitschiene 11 bzw. 12 abgeschlossen, wobei der linken Lichtbogenleitschiene 11 mit geringem Abstand ein ortsfestes Lichtbogenhorn 13 gegenübersteht und die rechte Lichtbogenleitschiene 12 am unteren Ende derart abgewinkelt ausgebildet ist, daß der bewegbare Kontakthebel mit seinem Lichtbogenhorn 5 in der Ausschaltstellung am Ende der Abwinklung anliegt.The arc quenching chamber 1 has a two-part Chamber housing 6 with a lower shaft body 7 and an end body that terminates this above 8 on. In the shaft body 7 are mutually Distance between quenching plates 10 is arranged. This quenching plate arrangement is on both sides by an arc guide rail 11 or 12 completed, the left Arc guide rail 11 with a small distance stationary arcing horn 13 faces and the right arc guide rail 12 at the lower end like this is angled that the movable Contact lever with its arcing horn 5 in the off position at the end of the bend.

Die Löschbleche 10 enden in einer Ebene nahe dem oberen Ende des Schachtkörpers 7 und sind gegen Verschiebung in Längsrichtung durch den Endkörper 8 gesichert. Hierzu steht einer Stirnfläche 14 jedes zweiten Löschbleches 10 ein Steg 15 des Endkörpers 8 gegenüber. Ein linker Endsteg 16 und ein rechter Endsteg 17 sind breiter als die Stege 15 ausgebildet, und zwar derart, daß jeweils das letzte Löschblech 10 und die anschließende Lichtbogenleitschiene 11 bzw. 12 an dem Endsteg 16 bzw. 17 anliegen. Die Stege 15 in Verbindung mit den Endstegen 16 und 17 bilden eine erste Barriere 20 für Lichtbogengase, die beim Schalten entstehen und die vor dem Austritt in die freie Umgebung abzukühlen und zu entionisieren sind.The quenching plates 10 end close in one plane the upper end of the shaft body 7 and are against Longitudinal displacement through the end body 8 secured. For this purpose there is an end face 14 of every second Extinguishing plate 10 a web 15 of the end body 8 opposite. A left end web 16 and a right end web 17 are wider than the webs 15, namely such that the last baffle plate 10 and the subsequent one Arc guide rail 11 or 12 on the End bar 16 or 17 abut. The webs 15 in connection with the end webs 16 and 17 form a first Barrier 20 for arcing gases that arise when switching and that before leaving the free environment are to be cooled and deionized.

Oberhalb der Barriere 20 befindet sich eine zweite, durch Stege 21 gebildete Barriere 22. Die Stege 21 sind um eine Teilungseinheit der Löschbleche 10 verschoben angeordnet, so daß jedem zweiten Löschblech ein Steg 21 mit einem Abstand gegenübersteht.There is a second one above the barrier 20, Barrier 22 formed by webs 21. The webs 21 are shifted by a division unit of the quenching plates 10 arranged so that every second baffle Web 21 faces at a distance.

Die Querschnittsform der Stege 15 und 21 ist gemäß den Figuren 1 und 4 gleich und annähernd quadratisch geformt. Dabei entsprechen die Breite b und die Höhe h der Stege 15 und 21 etwa dem Teilungsmaß t der Löschbleche 10. Eine dritte Barriere 24 wird durch eine Stirnwand 23 des Endkörpers 8 gebildet. Die Stirnwand 23 enthält die Austrittsöffnungen 26 (Figur 2), durch welche die abgekühlten und entionisierten Lichtbogengase die Lichtbogenlöschkammer 1 verlassen. Während die erste und die zweite Barriere 20 bzw. 22 nur einen geringen gegenseitigen Abstand d aufweisen (Figur 4), der etwa ein Viertel der Breite b bzw. der Höhe h der Stege 15 bzw. 21 beträgt, ist zwischen der zweiten und der dritten Barriere 22 bzw. 24 ein größerer Abstand vorgesehen, durch den eine Kühlkammer 25 gebildet wird. Die Austrittsöffnungen 26 der dritten Barriere 24 sind länglich ausgebildet und parallel zu den Stegen 15 und 21 der ersten und der zweiten Barriere 20 und 22 angeordnet.The cross-sectional shape of the webs 15 and 21 is according to Figures 1 and 4 the same and approximately square shaped. The width b and correspond Height h of the webs 15 and 21 approximately the pitch t the quenching plates 10. A third barrier 24 is through an end wall 23 of the end body 8 is formed. The front wall 23 contains the outlet openings 26 (FIG. 2), through which the cooled and deionized arc gases leave the arc extinguishing chamber 1. While the first and second barriers 20 and 22, respectively have only a small mutual distance d (Figure 4), which is about a quarter of the width b or the height h of the webs is 15 or 21, is between the second and the third barrier 22 or 24 a greater distance provided by which a cooling chamber 25 is formed becomes. The outlet openings 26 of the third barrier 24 are elongated and parallel to the webs 15 and 21 of the first and second barriers 20 and 22 arranged.

Wie näher die Figur 3 zeigt, sind die Stege 15 der ersten Barriere 20 randseitig durch einen Quersteg 27 miteinander verbunden. Hierdurch wird eine Anlagefläche auch für diejenigen Löschbleche 10 gebildet, die nicht an den Stegen 15 der ersten Barriere 20 anliegen. Ferner ist bei einem Vergleich der Figuren 2 und 3 zu erkennen, daß die Austrittsöffnungen 26 kürzer sind, als die durch die Stege 15 und 21 gebildeten Öffnungen. Auch ist das Teilungsmaß der Austrittsöffnungen 26 abweichend vom Teilungsmaß t (Figur 1) der Stege 15 und 21 gewählt. Hierdurch wird vermieden, daß einem Zwischenraum der Stege 21 gerade eine Austrittsöffnung 26 gegenübersteht.3 shows, the webs 15 are the first barrier 20 on the edge side by a cross piece 27 connected with each other. This creates a contact surface also formed for those quenching plates 10 that do not rest against the webs 15 of the first barrier 20. Furthermore, in a comparison of Figures 2 and 3 recognize that the outlet openings 26 are shorter than the openings formed by the webs 15 and 21. The pitch of the outlet openings 26 is also different of the pitch t (Figure 1) of the webs 15 and 21 chosen. This avoids a gap the webs 21 just an exit opening 26 faces.

Wie insbesondere den Figuren 4 und 5 zu entnehmen ist, besitzt der Endkörper 8 allseitig überstehende Randstücke 30, 31 sowie 32 und 33 zur Auflage am stirnseitigen Ende des Schachtkörpers 7. Durchgangslöcher 34 in den Ecken der genannten Randstücke sind zur Verbindung des Endkörpers 8 und des Schachtkörpers 7 mittels Schrauben 35 vorgesehen.As can be seen in particular from FIGS. 4 and 5 is, the end body 8 protrudes on all sides Edge pieces 30, 31 and 32 and 33 for support on front end of the shaft body 7. Through holes 34 are in the corners of said edge pieces for connecting the end body 8 and the shaft body 7 provided by means of screws 35.

Zur Trennung eines Stromkreises wird der Kontakthebel 4 aus der ausgezogen gezeigten Stellung in die strichpunktiert gezeigte Stellung bewegt. In bekannter Weise wird der entstehende Schaltlichtbogen von dem feststehenden Schaltstück 3 und dem Lichtbogenhorn 5 des Kontakthebels 4 auf die Lichtbogenleitschienen 11 und 12 überführt. Aufgrund magnetischer und thermischer Auftriebskräfte gelangt der Schaltlichtbogen dann in die Löschblechanordnung (Löschbleche 10, Figur 1) und wird dort in eine der Anzahl von Löschblechen 10 entsprechende Anzahl von Teillichtbögen gespalten. Die bis zum Erlöschen des Schaltlichtbogens anfallenden Lichtbogengase entweichen durch die Anordnung von Barrieren 20, 22 und 24 nach außen. Dabei üben zunächst die Stege 15 der ersten Barriere 20 aufgrund ihrer relativ großen Höhe und ihrer parallelen Flanken eine Richtwirkung auf die Gasströmung aus. Die Teilströme des Gases treffen dann auf die unteren Flächen der Stege 21 der Barriere 22 und werden aufgrund des geringen Abstandes d der Stege 15 und 21 zu einer Umlenkung um etwa 90° gezwungen. In dem Raum zwischen zwei Stegen 21 der zweiten Barriere 22 treffen jeweils zwei umgelenkte Teilströme der Lichtbogengase gegeneinander und können den Raum zwischen den Stegen 21 erst nach nochmaliger Umlenkung um 90° in Richtung der Kühlkammer 25 verlassen. Dies geschieht unter lebhafter Wirbelbildung und Expansion. Damit verbunden sind eine starke Abkühlung und eine Rekombination von Ladungsträgern.The contact lever is used to separate a circuit 4 from the extended position shown in the Position shown in broken lines is moved. In known The resulting switching arc is switched off by the fixed contact 3 and the arcing horn 5 of the contact lever 4 on the arc guide rails 11 and 12 transferred. Due to magnetic and thermal The switching arc is buoyant then in the quenching plate arrangement (quenching plates 10, FIG 1) and is there in one of the number of quenching plates 10 corresponding number of partial arcs split. The until the switching arc goes out Arcing gases escape through the arrangement of barriers 20, 22 and 24 to the outside. there first practice the webs 15 due to the first barrier 20 their relatively high height and their parallel Flank a directional effect on the gas flow. The partial flows of the gas then meet the lower ones Areas of the webs 21 of the barrier 22 and are due the small distance d between the webs 15 and 21 forced to deflect by about 90 °. By doing Space between two webs 21 of the second barrier 22 hit two redirected partial flows of the arc gases against each other and can space between the webs 21 only after redirection leave by 90 ° in the direction of the cooling chamber 25. This happens with vigorous vortex formation and expansion. This is associated with a strong cooling and one Recombination of load carriers.

Die Verweildauer der Lichtbogengase in der Kühlkammer 25 ist durch die Bemessung der Austrittsöffnungen 26 zu beeinflussen Trotz der guten Wirksamkeit der beschriebenen Anordnung von Barrieren 20, 22 und 24 beansprucht die beschriebene Anordnung nur einen verhältnismäßig kleinen Teil der Gesamthöhe der Lichtbogenlöschkammer 1. Ferner werden keine leitfähigen Teile wie Drahtgewebe, Gitter aus Streckmetall oder ähnliche Elemente benötigt, um die gewünschte Abkühlung und Entionisierung der Lichtbogengase zu bewirken. Daher zeichnet sich die beschriebene Lichtbogenlöschkammer 1 auch durch eine große Sicherheit gegen elektrische Überschläge an der Austrittsseite der Löschbleche 10 aus. Der Sicherheitsabstand zu geerdeten Bauteilen wird auf ein geringes Maß von etwa 20 - 60 mm vermindert.The dwell time of the arc gases in the cooling chamber 25 is due to the dimensioning of the outlet openings 26 to influence Despite the good effectiveness the described arrangement of barriers 20, 22 and 24 the arrangement described claims only one relatively small part of the total height of the arc quenching chamber 1. Furthermore, no conductive Parts such as wire mesh, mesh made of expanded metal or Similar items needed to get the cooling you want and to effect deionization of the arc gases. Therefore, the described arc quenching chamber stands out 1 also through a great security against electrical flashovers on the exit side of the fire extinguishing plates 10 out. The safety distance to earthed Components are cut to a small size of around 20 - 60 mm decreased.

Claims (6)

  1. Arc quenching chamber for a circuit breaker, having a chamber enclosure (6), having arc guide rails (11, 12) which are arranged in the chamber enclosure (6), having quenching plates (10) which are supported at a distance from one another, and having a cooling arrangement, which is arranged above the quenching plates (10), for emerging arc gases, which comprises a first barrier (20) arranged immediately above the quenching plates, a second barrier (22) arranged at a distance from the first barrier, a cooling chamber (25) which follows the second barrier, and a third barrier (24) which seals the cooling chamber on the outside, in which
    the first barrier (20) and the second barrier (22) have aperture openings which are aligned parallel to end surfaces (14) of the quenching plates (10), and the third barrier (24) is provided with outlet openings (26),
    the first barrier (20) is formed by webs (15) in the chamber enclosure (6), which webs are arranged twice as far apart as the pitch (t) of the quenching plates (10) and are each used as an opposing bearing for one quenching plate (10), and
    the second barrier is likewise formed by webs (21) on the chamber enclosure, which webs (21) are arranged offset by the pitch (t) with respect to the webs (15) of the first barrier (20),
    with the webs (15, 21) having an approximately square cross-sectional shape, whose width (b) and height (h) correspond approximately to the pitch (t), and
    with the distance (d) between the first and the second barrier being 0.1 to 0.5 times the height (h) of the webs.
  2. Arc quenching chamber according to Claim 1,
    characterized in that
    one arc guide rail (11, 12) and the adjacent quenching plate (10) are each covered by one end web (16, 17) of the first barrier (20), such that arc gases can enter the cooling chamber (25), which is located between the second and the third barriers (22, 24), only along the webs (21) of the second barrier (22).
  3. Arc quenching chamber according to Claim 1 or 2,
    characterized in that,
    if the chamber enclosure (6) is subdivided into a shaft body (7) which holds the quenching plates and an end body (8) which closes the shaft body (7) at the top, the first, the second and the third barriers (20, 22, 24) are components of the end body (8).
  4. Arc quenching chamber according to Claim 3,
    characterized in that
    the webs (15) of the first barrier (20) are connected by means of a transverse web (27) at the edge, which forms an opposing bearing for every alternate quenching plate (10) which does not rest on one of the webs (15) of the first barrier (20).
  5. Arc quenching chamber according to one of Claims 3 or 4,
    characterized in that
    the outlet openings (26) of the third barrier (24) are in the form of slots and are arranged parallel to the webs (15, 21) of the first and of the second barriers (20, 22), but offset with respect to them, and are arranged at a pitch which differs from the pitch of the webs (15, 21) of the first and the second barriers (20, 22).
  6. Arc quenching chamber according to Claim 3,
    characterized in that the end body (8) is produced as an integral hollow body composed of a thermosetting plastic.
EP95913022A 1994-03-21 1995-03-10 Arc quenching chamber with three barriers for the passage of arc gasses Expired - Lifetime EP0752153B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4410108A DE4410108C2 (en) 1994-03-21 1994-03-21 Arc quenching chamber with three barriers for the passage of arc gases
DE4410108 1994-03-21
PCT/DE1995/000347 WO1995026033A1 (en) 1994-03-21 1995-03-10 Arc quenching chamber with three barriers for the passage of arc gasses

Publications (3)

Publication Number Publication Date
EP0752153A1 EP0752153A1 (en) 1997-01-08
EP0752153B1 EP0752153B1 (en) 1998-08-12
EP0752153B2 true EP0752153B2 (en) 2002-09-25

Family

ID=6513662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95913022A Expired - Lifetime EP0752153B2 (en) 1994-03-21 1995-03-10 Arc quenching chamber with three barriers for the passage of arc gasses

Country Status (5)

Country Link
US (1) US5756951A (en)
EP (1) EP0752153B2 (en)
JP (1) JPH09510574A (en)
DE (2) DE4410108C2 (en)
WO (1) WO1995026033A1 (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5470701A (en) * 1993-02-24 1995-11-28 The Regents Of The University Of California Method for determining favorable prognosis in an HIV positive subject using HLA-DR+ /CD38- CD8bright cells
DE29612636U1 (en) * 1996-07-15 1997-08-14 Siemens AG, 80333 München Arc quenching chamber for low voltage circuit breakers
DE29617358U1 (en) * 1996-09-24 1998-01-29 Siemens AG, 80333 München Arc quenching chamber for low voltage circuit breakers
US5861596A (en) * 1997-04-01 1999-01-19 Eaton Corporation Dual baffle apparatus for electrical switching device
DE29720715U1 (en) 1997-11-21 1998-01-22 Siemens AG, 80333 München Switchgear with arc quenching device
JP3411206B2 (en) * 1997-12-26 2003-05-26 三菱電機株式会社 Arc extinguishing device for contact switching equipment
DE19920042C1 (en) 1999-04-23 2001-01-18 Siemens Ag Switching gas damper for low-voltage circuit breakers
DE10033936A1 (en) * 2000-07-05 2002-01-17 Siemens Ag Low-voltage circuit breakers with an arc quenching chamber and with a switching gas damper
DE10036370B4 (en) * 2000-07-18 2009-07-09 Siemens Ag Arc quenching device with an attachment for low-voltage switchgear
DE10049726A1 (en) * 2000-09-29 2002-04-11 Siemens Ag Chamber cover attachment for arc quenching chambers for low-voltage switchgear
FR2823904B1 (en) * 2001-04-19 2003-06-06 Schneider Electric Ind Sa MONOBLOCK DIFFUSER FOR ELECTRICAL SWITCHING APPARATUS
US7176771B2 (en) 2001-08-24 2007-02-13 Square D Company Circuit breaker filter assembly
DE10149019C1 (en) * 2001-09-28 2003-06-18 Siemens Ag Arc quenching device for low-voltage switchgear
DE102004001943A1 (en) * 2004-01-14 2005-08-04 Abb Patent Gmbh Electrical circuit breaker switch has an electrical arc extinguishing arrangement coupled to contact region
DE102004037294A1 (en) * 2004-07-27 2006-03-23 Siemens Ag Arc extinguishing device and low-voltage circuit breaker with a light arc extinguishing device
NL1027342C2 (en) * 2004-10-26 2006-04-27 Eaton Electric Nv Fire extinguisher for safety switch.
DE102005043396A1 (en) * 2005-09-08 2007-03-15 Siemens Ag Replaceable blanks for a circuit breaker and circuit breaker with replaceable blanks
US7202436B1 (en) * 2005-10-28 2007-04-10 Eaton Corporation Secondary arc chute and electrical switching apparatus incorporating same
US7488915B2 (en) 2006-09-20 2009-02-10 Eaton Corporation ARC baffle, and ARC chute assembly and electrical switching apparatus employing the same
KR101094775B1 (en) * 2010-07-06 2011-12-16 엘에스산전 주식회사 Arc extinguishing mechanism for circuit breaker
CN105336526A (en) * 2015-12-10 2016-02-17 二一三电器(上海)有限公司 Double-breakpoint-contact arc-control device
CN105405706A (en) * 2015-12-29 2016-03-16 上海电器陶瓷厂有限公司 Arc extinguish chamber of disconnecting switch
KR20180114763A (en) * 2017-04-11 2018-10-19 엘에스산전 주식회사 Arc gas venting structure of air circuit breaker
FR3065316B1 (en) * 2017-04-14 2019-07-05 Schneider Electric Industries Sas CUTTING GAS FILTRATION DEVICE FOR CUTTING APPARATUS OF ELECTRIC CURRENT, AND APPARATUS FOR CUTTING ELECTRIC CURRENT COMPRISING SAID FILTERING DEVICE
US10650993B1 (en) * 2019-03-19 2020-05-12 Siemens Industry, Inc. Circuit breaker with enhanced arc extinguishing chamber
WO2020261429A1 (en) * 2019-06-26 2020-12-30 三菱電機株式会社 Air circuit breaker

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3005892A (en) 1957-03-19 1961-10-24 Ite Circuit Breaker Ltd Arc chute design for circuit breakers
DE2905854A1 (en) 1979-02-08 1980-08-21 Terasaki Denki Sangyo Kk CIRCUIT BREAKER
FR2589624A1 (en) 1985-10-31 1987-05-07 Merlin Gerin Multipole electric circuit breaker with moulded insulating casing
DE3541514A1 (en) 1985-11-21 1987-05-27 Siemens Ag Arc extinguishing chamber having an attachment for further cooling of emerging gases
WO1993013538A1 (en) 1991-12-21 1993-07-08 Licentia Patent-Verwaltungs-Gmbh Automatic cutout with an arc extinguishing chamber

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2310728A (en) * 1941-09-04 1943-02-09 Gen Electric Electric circuit breaker
US2445190A (en) * 1944-12-20 1948-07-13 Gen Electric Electric circuit breaker
DE1021054B (en) * 1954-05-11 1957-12-19 Siemens Ag Switching chamber for electrical switchgear
DE1238538B (en) * 1963-07-19 1967-04-13 Licentia Gmbh Loeschblech arrangement for switchgear, especially for installation switches
US3440378A (en) * 1966-04-05 1969-04-22 Gen Electric Metal plate type of arc-extinguishing device
DE2133926A1 (en) * 1971-07-07 1973-01-18 Allis Chalmers Mfg Co SPARK CHAMBER FOR AIR CIRCUIT BREAKER
US3621169A (en) * 1970-04-20 1971-11-16 Gen Electric Electric circuit interrupter with novel arc gas discharge muffle assembly
FR2451097A1 (en) * 1979-02-07 1980-10-03 Terasaki Denki Sangyo Kk ELECTRIC AIR CIRCUIT SWITCH, MECHANISM AND HOUSING
SU851517A1 (en) * 1979-10-04 1981-07-30 Предприятие П/Я А-7676 Arc-extinguishing chamber
US4511773A (en) * 1982-05-27 1985-04-16 General Electric Company Molding composition for arc circuit breakers
GB8302615D0 (en) * 1983-01-31 1983-03-02 Whipp And Bourne 1975 Ltd Arc splitter plates
JPS6093230U (en) * 1983-12-01 1985-06-25 三菱電機株式会社 electromagnetic contactor
US4876424A (en) * 1988-09-19 1989-10-24 Siemens Energy & Automation, Inc. Barrier with a venting scheme for a circuit breaker
SU1756962A1 (en) * 1990-04-10 1992-08-23 Ленинградское Производственное Электромашиностроительное Объединение "Электросила" Им.С.М.Кирова Device for arresting arc of multi-pole switch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3005892A (en) 1957-03-19 1961-10-24 Ite Circuit Breaker Ltd Arc chute design for circuit breakers
DE2905854A1 (en) 1979-02-08 1980-08-21 Terasaki Denki Sangyo Kk CIRCUIT BREAKER
FR2589624A1 (en) 1985-10-31 1987-05-07 Merlin Gerin Multipole electric circuit breaker with moulded insulating casing
DE3541514A1 (en) 1985-11-21 1987-05-27 Siemens Ag Arc extinguishing chamber having an attachment for further cooling of emerging gases
WO1993013538A1 (en) 1991-12-21 1993-07-08 Licentia Patent-Verwaltungs-Gmbh Automatic cutout with an arc extinguishing chamber

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Catalogue distribution basse tension 92/93 der Firma Merlin Gerin
Masterpact disjoncteur courant continu de 1000 à 8000A der Firma Merlin Gerin

Also Published As

Publication number Publication date
WO1995026033A1 (en) 1995-09-28
DE59503170D1 (en) 1998-09-17
EP0752153B1 (en) 1998-08-12
US5756951A (en) 1998-05-26
DE4410108C2 (en) 1996-08-22
JPH09510574A (en) 1997-10-21
EP0752153A1 (en) 1997-01-08
DE4410108A1 (en) 1995-09-28

Similar Documents

Publication Publication Date Title
EP0752153B2 (en) Arc quenching chamber with three barriers for the passage of arc gasses
DE602005003908T2 (en) Arc chamber and electromagnetic switch with such arc chamber
EP0720772A1 (en) Power switch with an arc quenching device
EP1687835A1 (en) Switching device
EP0360367A2 (en) Low-voltage power circuit breaker with a wall portion for diverting the arc gases
DE3413555C2 (en)
EP1301935B1 (en) Arc extinguisher with an attachment for low voltage switchgear
DE3908102A1 (en) Automatic circuit breaker, especially a line protective circuit breaker
EP0617836B1 (en) Automatic cutout with an arc extinguishing chamber
AT411502B (en) HOUSING FOR A SWITCHGEAR
EP1547108B1 (en) Arrangement comprising a low voltage power switch and a switching gas damper provided with a carrier element and used for the low voltage power switch
DE102007001802B4 (en) Electrical switching device
DE1232644B (en) Switching device with an arc chamber containing a soldering plate assembly
DE4007606A1 (en) Automatic load protection switch
DE1126010B (en) Loeschblechordnung for low voltage switchgear
DE20104325U1 (en) Low voltage circuit breakers with an arc extinguishing system
DE1790089C3 (en)
DE69309174T2 (en) Circuit breaker with two concentric isolating chambers
EP0222690A1 (en) Contact arrangement for low-voltage circuit breakers with a movable insulating body
EP0387761A2 (en) Automatic circuit breaker, particularly automatic cut-out
DE3810978A1 (en) SWITCHING DEVICE COMBINATION OF LOW-VOLTAGE CIRCUIT BREAKER AND CURRENT-LIMITING SWITCHING DEVICE
DE2910495C2 (en) Electric circuit breaker
DE3810977C2 (en) Current-limiting switching device with electrodynamically opening switching elements
AT404770B (en) ARC EXTINGUISHING CHAMBER FOR SWITCHES
DE1058600B (en) Magnetic blower switch

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19960419

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT PT

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19980122

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT PT

REF Corresponds to:

Ref document number: 59503170

Country of ref document: DE

Date of ref document: 19980917

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19981016

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 19981111

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: SCHNEIDER ELECTRIC SA

Effective date: 19990511

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

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

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20020925

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): DE FR GB IT PT

GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)
ET3 Fr: translation filed ** decision concerning opposition
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20090210

Year of fee payment: 15

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

Ref country code: GB

Payment date: 20090312

Year of fee payment: 15

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

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

Effective date: 20100910

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

Effective date: 20100310

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

Ref country code: PT

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

Effective date: 20100910

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

Ref country code: GB

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

Effective date: 20100310

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

Ref country code: FR

Payment date: 20110321

Year of fee payment: 17

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

Ref country code: IT

Payment date: 20110330

Year of fee payment: 17

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

Ref country code: DE

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

Effective date: 20111001

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

Ref country code: DE

Payment date: 20110520

Year of fee payment: 17

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20121130

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

Ref country code: FR

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

Effective date: 20120402

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59503170

Country of ref document: DE

Effective date: 20121002

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

Ref country code: IT

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

Effective date: 20120310