EP0617836B1 - Leitungsschutzschalter mit einer lichtbogenkammer - Google Patents

Leitungsschutzschalter mit einer lichtbogenkammer Download PDF

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Publication number
EP0617836B1
EP0617836B1 EP92923693A EP92923693A EP0617836B1 EP 0617836 B1 EP0617836 B1 EP 0617836B1 EP 92923693 A EP92923693 A EP 92923693A EP 92923693 A EP92923693 A EP 92923693A EP 0617836 B1 EP0617836 B1 EP 0617836B1
Authority
EP
European Patent Office
Prior art keywords
walls
blow
chamber
housing
arc
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
EP92923693A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0617836A1 (de
Inventor
Werner Ostermann
Klaus Liesenjohann
Jürgen Feuerhake
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0617836A1 publication Critical patent/EP0617836A1/de
Application granted granted Critical
Publication of EP0617836B1 publication Critical patent/EP0617836B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes

Definitions

  • the invention relates to a circuit breaker with an arc chamber arranged within its housing and receiving an arc stack, which passes behind a slotted partition into an outwardly open blow-out chamber which in turn has integrally formed walls on two half-shells of the housing transverse to the main flow direction.
  • Circuit breakers with such an arc chamber are known (DE-A-1 238 538, DE-A-29 49 012).
  • the partition wall which is arranged directly behind the extinguishing plates and which lies closely against the end edges thereof is provided with slots which are each recessed in the gap between two extinguishing plates.
  • an extinguishing and expansion chamber is known from FR-A-1 417 232, which is arranged in an arc around a contact point.
  • a number of metal plates are inserted into the chamber in a radial shape and held between two insulating material cheeks. Behind it, several walls on the insulating material cheeks are staggered at a distance from the end edges of the metal plates, which considerably lengthen the flow path for the arc gases from the metal plates to an exit window.
  • the arc gases can expand well and their energy content is reduced, but there is an increased risk of arcing at the front edges of the metal plates.
  • Such a quenching and expansion chamber is therefore also of limited use for circuit breakers with high switching capacities.
  • the invention has for its object to design the arc chamber in the blow-out area with the lowest possible additional costs so that the emission of conductive, hot arc gases is significantly reduced in a circuit breaker of the type mentioned, so that even with high switching power a flame escapes from the housing to exclude.
  • the invention is advantageous insofar as the arc gases on their way from the stack of quenching plates to the outside have to flow around several walls which alternate in an alternating manner, rising from the bottom of the half-shells in the blow-out chamber at least up to the middle of the housing, and because of the longer flow path and the larger vets Surface can be cooled considerably better. In addition, they are swirled by comb-like protruding pins on the tops of the walls so that their degree of ionization is reduced. In a preferred embodiment of the invention, the arc gases still escaping are then directed into different directional angles by means of blow-out nozzles, so that a concentrated jet does not emerge in one direction, but rather a strong scattering of the arc gases takes place.
  • the solution according to the invention results in a strong reduction of the escaping arcing gases with little effort - and this without any significant impairment of the arcing speed in the actual arcing chamber.
  • the remaining, low emission of conductive arcing gases practically excludes the risk of arcing over live parts in the vicinity of the circuit breaker.
  • the simplified circuit breaker shown in narrow construction has a housing 1 made of insulating material, which is composed of two half-shells 1a, 1b, which in turn spatially enclose switching and triggering mechanisms, not shown, and the associated connection means.
  • an arc chamber 2 is arranged in the base region of the housing, which is largely filled by a stack of quenching plates 3.
  • the individual quenching plates 3a are included their left-hand end edges on a partition 2a, which is formed on the housing and separates the arc chamber 2 from a blow-out chamber 4.
  • a plurality of slots 2b are each cut out in the partition between the individual quenching plates, so that arcing gases which arise during the shutdown process can escape through the slots into the blow-out chamber 4.
  • the switching arc which arises at a merely indicated contact point 5, in particular in the event of a short-circuit shutdown, runs in a known manner with its base points on arc guide rails 3b into the stack of quenching sheets and is extinguished there.
  • the ionized arc gases escaping under high pressure through the slots 2b flow around a plurality of alternating interlocking walls 4a on their way through the blow-out chamber 4 - as is particularly indicated in FIG. 2 - before they reach the outside through a blow-out opening 4b.
  • the walls are each molded directly onto the two half-shells 1a, 1b of the housing, which preferably consists of a thermoset.
  • the walls are provided with a plurality of comb-like protruding pins 4 a ', which, in conjunction with the incisions located between them, ensure a strong swirling of the arc gases.
  • These are also additionally cooled by the larger wall surfaces before they flow outside through the blow-out opening 4b.
  • the walls 4a each rise from the base of the half-shells at least to the middle and are not too far apart, as can be seen in particular from FIG. 2. Depending on the available space, three or four walls can be arranged below the terminal area 1c. In addition, the distances between the individual walls 4a and also the size and arrangement of the pins 4a 'are chosen so that despite high arc cooling and only a low emission of conductive arc gases, the running speed of the arc from the contact point 5 into the arc stack 3 is not impaired.
  • the basic shape shown in FIGS. 1 to 3 can be further optimized with the essential features of the blow-out chamber according to the invention, as shown in the exemplary embodiment according to FIGS. 4 to 6.
  • the blow-out chamber 4 'shown in FIG. 4 only as a section of the circuit breaker has a plurality of blow-out nozzles 4 c behind the walls 4 a instead of a blow-out opening. These are arranged on both sides of the parting line between the two half-shells 1a, 1b and are offset in such a meandering manner that the actual openings in the outer side wall 1d are alternately left blank (FIG. 5). In addition, the blow-out nozzles are not formed in the side wall 1d at right angles, but rather at an angle of approximately 45 ° to the direction of the walls 4a.
  • blow-out nozzles 4c in the two half-shells are mutually offset by approximately 90 °, as can be seen from FIGS. 4 and 6. Due to this different direction of the blow-out nozzles there is a strong scattering of the ultimately emerging arc gases, so that a risk of overturning to live parts located in the vicinity of the circuit breaker is avoided.
  • the blow-out chamber can be divided into two equally large half-spaces by a partially inclined rib 4d.
  • the rib 4d is positioned approximately in the middle of the partition wall 2a and extends at the same oblique angle as the individual slots 2b. This achieves good guidance of the arc gases flowing out at an angle from the arc chamber into the blow-out chamber and prevents the tendency to re-ignition directly behind the extinguishing plates.
  • the rib 4d is just like that Walls 4a and the other elements of the blow-out chamber each form part of the two half-shells of the housing and thus represent a cost-neutral solution.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP92923693A 1991-12-21 1992-12-04 Leitungsschutzschalter mit einer lichtbogenkammer Expired - Lifetime EP0617836B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9115905U DE9115905U1 (pl) 1991-12-21 1991-12-21
DE9115905U 1991-12-21
PCT/DE1992/001006 WO1993013538A1 (de) 1991-12-21 1992-12-04 Leitungsschutzschalter mit einer lichtbogenkammer

Publications (2)

Publication Number Publication Date
EP0617836A1 EP0617836A1 (de) 1994-10-05
EP0617836B1 true EP0617836B1 (de) 1995-11-08

Family

ID=6874506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92923693A Expired - Lifetime EP0617836B1 (de) 1991-12-21 1992-12-04 Leitungsschutzschalter mit einer lichtbogenkammer

Country Status (8)

Country Link
EP (1) EP0617836B1 (pl)
AT (1) ATE130121T1 (pl)
CZ (1) CZ283892B6 (pl)
DE (2) DE9115905U1 (pl)
ES (1) ES2079898T3 (pl)
HU (1) HU213360B (pl)
PL (1) PL169428B1 (pl)
WO (1) WO1993013538A1 (pl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002075760A1 (de) * 2001-03-20 2002-09-26 Moeller Gebäudeautomation KG Gehäuse für ein schaltgerät
DE10312820A1 (de) * 2003-03-22 2004-09-30 Abb Patent Gmbh Lichtbogenlöschblechanordnung für einen elektrischen Schalter, insbesondere einen elektrischen Leitungsschutzschalter

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4326922C1 (de) * 1993-08-11 1994-11-17 Kloeckner Moeller Gmbh Lichtbogenkammer für elektrische Schaltgeräte
DE4410108C2 (de) * 1994-03-21 1996-08-22 Siemens Ag Lichtbogenlöschkammer mit drei Barrieren für den Durchtritt von Lichtbogengasen
AT405112B (de) * 1997-02-12 1999-05-25 Felten & Guilleaume Ag Oester Überspannungsableiteinrichtung
US5861596A (en) * 1997-04-01 1999-01-19 Eaton Corporation Dual baffle apparatus for electrical switching device
FR2823904B1 (fr) * 2001-04-19 2003-06-06 Schneider Electric Ind Sa Diffuseur monobloc pour un appareillage electrique de coupure
DE102005015401B4 (de) * 2005-01-10 2014-03-20 Dehn + Söhne Gmbh + Co. Kg Überspannungsableiter mit zwei divergierenden Elektroden und einer zwischen den Elektroden wirkenden Funkenstrecke
DE102005007301A1 (de) * 2005-02-17 2006-08-24 Abb Patent Gmbh Elektrisches Installationsgerät mit Lichtbogen-Vorkammerraum und strombegrenzender Lichtbogenlöscheinrichtung
DE102014002902B4 (de) * 2014-02-27 2019-08-01 Schaltbau Gmbh Löschkammer für ein Schütz und ein Schütz zum Löschen von Lichtbögen

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445190A (en) * 1944-12-20 1948-07-13 Gen Electric Electric circuit breaker
US2942086A (en) * 1957-03-06 1960-06-21 Allis Chalmers Mfg Co Chimney cooler for air circuit breakers
US3005892A (en) * 1957-03-19 1961-10-24 Ite Circuit Breaker Ltd Arc chute design for circuit breakers
FR1417232A (fr) * 1964-09-25 1965-11-12 Cem Comp Electro Mec Cage d'extinction d'arc pour appareils de coupure à courant continu et alternatif
FR1480661A (pl) * 1965-05-21 1967-08-07
US3621169A (en) * 1970-04-20 1971-11-16 Gen Electric Electric circuit interrupter with novel arc gas discharge muffle assembly
DE7607341U1 (de) * 1976-03-10 1976-08-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Leitungsschutzschalter
US4075446A (en) * 1976-07-15 1978-02-21 Heinemann Electric Company Circuit breaker arc venting screen
DE7924748U1 (de) * 1979-08-31 1980-11-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen Gehäuse für aufreihbare Installationsgeräte
DE2949012C2 (de) * 1979-12-06 1984-03-22 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Lichtbogenkammer eines Leitungsschutzschalters
DE3307062C2 (de) * 1983-03-01 1985-06-20 Christian Geyer GmbH & Co, 8500 Nürnberg Lichtbogenlöschkammer
DE3440212A1 (de) * 1984-10-10 1986-04-17 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
FR2575861B1 (fr) * 1985-01-07 1987-01-16 Merlin Gerin Disjoncteur electrique miniature a chambre de formation d'arc
DE3541514A1 (de) * 1985-11-21 1987-05-27 Siemens Ag Lichtbogenloeschkammer mit einem aufsatz zur weiteren abkuehlung austretender gase
DE3619241C2 (de) * 1986-06-07 1994-07-21 Kloeckner Moeller Gmbh Löscheinrichtung für einen Leitungsschutzschalter
DE3705216A1 (de) * 1987-02-19 1988-09-01 Geyer Gmbh & Co Christian Elektrischer leitungsschutzschalter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002075760A1 (de) * 2001-03-20 2002-09-26 Moeller Gebäudeautomation KG Gehäuse für ein schaltgerät
DE10291133B4 (de) * 2001-03-20 2011-10-20 Moeller Gebäudeautomation KG Gehäuse für ein Schaltgerät
DE10312820A1 (de) * 2003-03-22 2004-09-30 Abb Patent Gmbh Lichtbogenlöschblechanordnung für einen elektrischen Schalter, insbesondere einen elektrischen Leitungsschutzschalter
DE10312820B4 (de) * 2003-03-22 2012-04-19 Abb Ag Lichtbogenlöschblechanordnung für einen elektrischen Schalter, insbesondere einen elektrischen Leitungsschutzschalter

Also Published As

Publication number Publication date
HUT67986A (en) 1995-05-29
WO1993013538A1 (de) 1993-07-08
HU9401476D0 (en) 1994-08-29
EP0617836A1 (de) 1994-10-05
DE59204283D1 (de) 1995-12-14
CZ283892B6 (cs) 1998-07-15
ES2079898T3 (es) 1996-01-16
ATE130121T1 (de) 1995-11-15
HU213360B (en) 1997-05-28
CZ151694A3 (en) 1994-11-16
PL169428B1 (pl) 1996-07-31
DE9115905U1 (pl) 1993-04-22

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