EP1764811B1 - Trennschalter mit einer verkleineten Lichtbogenlöschkammer - Google Patents

Trennschalter mit einer verkleineten Lichtbogenlöschkammer Download PDF

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Publication number
EP1764811B1
EP1764811B1 EP06354024A EP06354024A EP1764811B1 EP 1764811 B1 EP1764811 B1 EP 1764811B1 EP 06354024 A EP06354024 A EP 06354024A EP 06354024 A EP06354024 A EP 06354024A EP 1764811 B1 EP1764811 B1 EP 1764811B1
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EP
European Patent Office
Prior art keywords
separators
switchgear device
separator
electric switchgear
length
Prior art date
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Active
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EP06354024A
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English (en)
French (fr)
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EP1764811A1 (de
Inventor
Marc c/o Schneider Electric Industries SAS Rival
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP1764811A1 publication Critical patent/EP1764811A1/de
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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
    • H01H9/36—Metal parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns

Definitions

  • the invention relates to an electrical breaking device comprising at least one electrical pole comprising a fixed contact member of conductive material, a movable contact member capable of passing from a closed position in which it is in contact with the body fixed contact, in an open position where the two contact members are separated.
  • the electrical breaking device comprises an arc extinction chamber comprising two parallel lateral flanges placed on either side of a median longitudinal plane, a rear wall, a lower arc of conductive material, electrically connected to the contact member fixed and extending near the rear wall. Said lower horn is bordered by a periphery of gasogenic material.
  • the arc extinction chamber comprises a stack of separators extending from one lateral flange to the other, substantially perpendicular to the longitudinal median plane, at least two of the separators comprising a notch extending along the longitudinal median plane.
  • a high-voltage low-voltage cut-off device When a high-voltage low-voltage cut-off device is used to cut low-intensity electrical currents at relatively high voltages, of the order of 600 volts effective in single-phase, or 1000 volts effective three-phase, the breaking chambers support important thermal and mechanical stresses. Said low intensity electric currents are of the order of 5 to 15 times the rated current.
  • the dimensions of the breaking chambers must respect certain design rules in order to provide an energy exchange volume necessary for the extinction of the arc.
  • the depth of the arc extinguishing chamber ie its longitudinal dimension between the inlet of the chamber and the exhaust wall of the gases, must be sufficient to provide the volume of energy exchange necessary for the extinction of the arc.
  • the document FR2604026 discloses a cut-off device whose lower bow horn widens from its anterior part close to the contacts to its posterior part close to the bottom of the extinguishing chamber.
  • the enlarged posterior portion constitutes a collector portion whose area is smaller than the section of an arc root for an arc that would be formed with a constant electrical current density corresponding to the nominal breaking current.
  • the goal here is to bring the arc to the collector and stabilize it.
  • the stabilized arc then develops essentially in the middle part of the chamber.
  • Such a configuration is effective only if the longitudinal dimension of the chamber, that is to say the depth between the fixed contact zone and the rear wall of the chamber used for the extraction of gases is important.
  • the width of the chamber can be reduced because it is not used for the extinction of the arc.
  • the solution described in the patent FR2803687 comprises a device whose lower arcuate horn is biased to the same degree on the two most lateral parts of the posterior end zone. This makes it possible to affirm that the two lateral parts of the chamber contributed in proportions very close to the absorption of the energy released by the arc, and therefore to the extinction thereof. This is due to the particular shape of the bow horn which promotes rapid lateral oscillation of the arc from one side to the other of the posterior end zone of the bow horn. This arrangement makes it possible to make full use of the available width of the chamber, and thus to obtain the cut arc high voltage, above 600 volts effective for the phase, with a shallow chamber. This type of solution finds a particularly powerful application in terms of volume reduction in terms of chamber depth.
  • the invention is preferably applied to a relatively wide pole, in particular a pole whose distance between the contact zone of the fixed contact member and the bottom wall of the chamber is less than the distance between the flanges. side of the room. It also applies to a pole whose bow horn less than one length, measured in the longitudinal median plane, which is less than the widest width of the posterior part of the arc horn, measured along a perpendicular axis in the median longitudinal plane.
  • the invention therefore aims to overcome the drawbacks of the state of the art, so as to provide a reduced arc extinction chamber allowing the extinction of the arc at the time of the cutting of low intensity currents under significant tensions.
  • the arc extinguishing chamber of the cut-off device comprises at least one regenerative separator placed parallel to the lower arc horn, said at least one separator comprising at least one metal surface covering at least half of the notches according to the longitudinal median plane.
  • the metal surface of said at least one regenerative separator is at least equal to a quarter of the area of the arc extinguishing chamber in the XY plane, said metal surface being substantially centered with respect to the bottom of the indentations of the separators.
  • the width and the length of the regenerative separator are respectively at least equal to 50% of the width and the length of said separators.
  • the regenerative separator comprises a notch extending along the longitudinal median plane, the length of said notch being less than the length of the notches of the other separators.
  • the length of the notch is less than or equal to 60% of the length of the notches.
  • the length of the indentation is between 20 and 50% of the length of the indentations.
  • said at least one separator has a thickness greater than that of the other separators.
  • said at least one regenerative separator is placed between the lower arcuate horn and the first separator.
  • the electrical breaking device comprises a single regenerative separator.
  • the electrical cut-off device comprises an upper arc of conductive material substantially parallel to separators.
  • the upper arcuate horn forms an angle with all the separators.
  • the upper arcuate horn has a flap extending parallel to the posterior wall toward the anterior arcuate horn, the movable contact member being adapted to be, in the open position , opposite said flap.
  • the lower horn is bordered by a protruding periphery relative to the posterior portion of said lower bow horn.
  • a power low-voltage multipole cut-off device 10 comprises a molded insulating casing 12 enclosing a known type of control mechanism 14, provided with a transverse switching bar 16 common to all the poles, journalled in bearings provided in the housing 12.
  • Each pole comprises a fixed contact member 20, a movable contact member 22 and an arc extinction chamber 24 located near the fixed contact member 20.
  • the fixed contact member 20 comprises a current supply zone 26 mounted in the bottom of the housing 12, partially under the arc extinguishing chamber 24.
  • the fixed current supply zone 26 comprises a contact strip 36 which cooperates with contact pads 58 of the contact fingers 46 of the movable contact member 22.
  • the contact fingers 46 are electrically connected to the current supply area 40 via a cage 42.
  • the fixed current supply range 26 extends towards the interior of the chamber 24 by a lower conductive arc-horn 34.
  • the current-supplying zone 26 and the arc-horn 34 consist of various metallic materials drivers, and are at the same potential.
  • the lower arch horn 34 intended to receive the root of the arc when the arc extends from the fixed contact strip 36 towards the inside of the chamber 24.
  • the lower arch horn 34 constituted by a conductive metal plate is fixed by an outer face to the beach 26 of the fixed contact member 20. It has an inner face located inside the chamber 24.
  • the posterior portion of the arcuate horn 34 extends near the rear wall 72 of the arc extinguishing chamber 24.
  • the lower arcuate horn 34 is fixed on a bottom consisting of a plate of insulating material 90, in this case polyamide 6-6 loaded with 30% glass fiber. Said plate has an imprint corresponding to the shape of the lower arcuate horn and in which is housed the arc horn 34.
  • the portion of the plate 90 not covered by the arcuate horn extends to the flanges 68 and the rear wall 72. It has a periphery 92 forming a protruding shoulder in the chamber 24 and flush with the periphery of the inner face Alternatively, the periphery 92 may protrude inwardly from the chamber to a height greater than that of the inner face of the bow horn.
  • the perimeter 92 has a rounded C-shaped shape which follows the shape of the rim of the posterior portion of the arcuate horn so as to constitute a separation between the posterior portion of the horn and the posterior wall 72 of the chamber. one side, and between the rear part and the side flanges 68 on the other hand.
  • the movable contact member 22 comprises meanwhile a conductive fixed range of current supply 40, a support cage 42 pivotally mounted about an axis 44 fixed relative to the housing 12.
  • the movable contact member 22 may comprise preferably a plurality of contact fingers 46.
  • the contact fingers 46 pivot about a common geometric axis 50, fixed relative to the cage 42, and are returned to the fixed contact member 20 by pressure springs of contact 52.
  • a coupling rod 54 serves for coupling between the cage 42 of the movable contact member 22 and a crank 56 of the switching bar 16 of the mechanism 14.
  • Each finger 46 comprises a contact pad 58 intended to ensure contact with the contact strip 36 of the fixed contact member 20 when the apparatus is in the closed position.
  • the movable contact member 22 preferably comprises a lug 60 protruding beyond the contact pad towards the quenching chamber 24.
  • the contact fingers 46 are electrically connected to the current supply range. 40 through braids.
  • the extinguishing chamber 24 comprises two lateral flanges 68 of insulating material, which are parallel to the section plane of the figure 1 . Said flanges are located equidistant from either side of the cutting plane, so that it forms a median longitudinal geometric plane 70 of the chamber 24 and the pole.
  • a rear exhaust gas wall 72 is arranged behind the extinguishing chamber 24, perpendicular to the lateral flanges 68. This wall 72 has one or more exhaust ports for the cutoff gases.
  • An anterior opening 76 is arranged near the contact strip 36, opposite the rear wall 72.
  • Separators 78 consisting of flat metal plates extend perpendicularly to the median longitudinal plane 70 of the front opening 76 to the rear wall 72. The separators 78 are spaced apart from each other so as to allow the possibility of a gas flow between the front opening 76 and the wall 72. They are supported laterally by the lateral flanges 68.
  • Each separator 78 has an anterior stop defining in the plane of the plate an indentation 80 for capturing the electric arc.
  • This notch 80 has approximately a concave curved shape in U or V. In addition this notch 80 extends along the longitudinal median plane 70.
  • the extinction chamber 24 comprises at least one regenerative separator 79 positioned parallel to and as close as possible to the lower arc horn 34.
  • Said regenerative separator 79 is positioned substantially parallel to the separators 78.
  • the at least one a regenerative separator 79 is placed between the lower arc horn 34 and the first of the separators 78.
  • the distance separating the regenerative separator 79 from said horn is substantially equal to the thickness of the separators 78.
  • Said at least one regenerative separator 79 is generally made of a metallic material similar to that of the other separators 78.
  • said at least one separator 79 preferably has a thickness greater than that of the other separators 78.
  • a single regenerative separator 79 is placed next to the lower arcuate horn 34
  • the separator comprises at least one metal surface which is at least equal to a quarter of the area of the arc extinguishing chamber in the XY plane.
  • said metal surface is arranged relative to the other separators 78 so as to cover at least half of the notches 80 in the longitudinal median plane 70.
  • said metal surface is substantially centered with respect to the bottom 81 of the notches 8 of the separators 78.
  • the width and the length of the regenerative separator 79 are respectively at least equal to 50% of the width I and the length L of the separators 78.
  • the regenerative separator is placed and held in a not shown frame, two sides of which are fixed on the side flanges 68.
  • the frame may be made for example of a ceramic material.
  • the regenerative separator 79 comprises an anterior stop defining in the plane of the separator a notch 100. Said notch extends along an axis y parallel to the longitudinal median plane 70.
  • the notch 100 is less shallow than that of the other separators 78. Indeed, the length of said notch along the y-axis is less than the length Lech notch 80 other separators 78.
  • the length of the notch 100 of said at least one regenerative separator 79 is less than or equal to 60% of the length of the notch of the notches 80.
  • the length of the notch 100 is preferably between 20 and 50% of the length of the notch of the notches 80 of the other separators 78 .
  • the operation of the device according to this preferred embodiment is as follows. In the closed position, the switching bar 16 locked by the mechanism 14, keeps the cage 42 in the position illustrated on the figure 1 .
  • the springs 52 provide a contact pressure between the movable contact finger 22 and the fixed arcing contact 20.
  • an electronic trigger acts on the mechanism 14 which causes the opening of the contacts.
  • the rotation of the switching shaft 16 rotates the cage 42 about its axis of rotation 44.
  • the contact fingers 22 pivot very slightly about the axis of rotation 50, in the counterclockwise direction, under the effect of the contact pressure springs 52, while remaining in contact with the bar 26. Then they meet a stop of the cage 42, and are integrally driven with the cage 42 in rotation clockwise about the axis rotation 44, so that they separate from the bar 26.
  • An arc arises between the fixed and movable contacts 20, 22.
  • the root of the arc immediately migrates on the rim of the front part of the horn. lower arc 34 and then inwardly of the chamber 24.
  • the arc penetrating the chamber 24 divides more or less in contact with the separators 78, 79 in elementary arcs, each elementary arc constituting a series electrical connection between two adjacent separators 78 or between the lower arc horn 34 and the regenerator separator 79 facing it.
  • the root arc tends to cause the ablation of the perimeter 92 of gasogenic material with a large emission of gas, especially hydrogen.
  • This emission of gas in the immediate vicinity of the root of the arc causes a constriction of the root arc and leads to a cooling of the arch foot.
  • a higher dielectric regeneration is observed locally, which makes it possible to obtain a zone with low ionization near the lower part of the quenching chamber 24.
  • a metal regenerator separator 79 of sufficient mass and surface makes it possible to accelerate the cooling of the arch foot significantly. Given that the arch foot is both circumscribed and located mainly at the center of the regenerative separator 79, the edge of said separator next to the opening zone is not vaporized by the electric arc. The presence of this cooler zone on the front edge of the regenerator separator 79 limits the risk of reclasking the arc in this zone.
  • Local cooling of the electric arc must preferably be carried out as close as possible to the lower and / or upper edges of the extinguishing chamber 24.
  • the extinction chamber 24 comprises an upper arc horn 96.
  • This arc horn facilitates the insertion of the arc into the arc chute and forces the arc to move in the separators 78 over the entire height of the interrupting chamber.
  • the upper arc horn 96 is intended to receive the head of the electric arc at the end of opening of the movable contact member 22. It is constituted by a metal plate. This metal plate may be substantially parallel to the separators 78 or formed at an angle ⁇ with them. According to the example described, the upper arc horn 96 forms an angle ⁇ with all the separators 78. The positioning of the upper arcuate horn is made so that the movable contact comes close to said plate in the open position.
  • the height of the stack of the separators 78 may be greater than the displacement stroke of the moving contact 22. It is then necessary to extend the upper arc horn 96 in a parallel direction. at the posterior wall 72. A flap 98 then extends parallel to the posterior wall (72) in the direction of the anterior bow horn (34). The presence of this flap 98 tends to reduce the area of the front opening 76 so that the movable contact 22 in the open position is opposite said flap 98.
  • the bow head switches on the upper bow horn 96, and a secondary bow is formed in series with the first, between the flap 98 and the movable contact fingers 22.
  • the curved shape of the notch 80 of the separators 78 comprises with a notch 82 narrower and asymmetrical.
  • the separators 78 are then stacked so that the notches 82 are alternately on one lateral side and the other side of the chamber 24.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Arc Welding In General (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Scissors And Nippers (AREA)
  • Circuit Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (13)

  1. Elektrisches Schaltgerät (10) mit mindestens einem Pol, der
    - ein feststehendes Schaltstück (20) aus einem Leiterwerkstoff,
    - ein bewegliches Schaltstück (22), das von einer Einschaltstellung, in der es mit dem beweglichen Schaltstück in Berührung steht, in eine Ausschaltstellung verbracht werden kann, in der die beiden Schaltstücke voneinander getrennt sind,
    - sowie eine Lichtbogenlöschkammer (24) mit
    - zwei beidseitig einer Längsmittelebene (70), parallel zueinander angeordneten Seitenwänden (68),
    - einer Rückwand (72),
    - einem unteren Lichtbogenhorn (34) aus einem Leiterwerkstoff, das elektrisch mit dem feststehenden Schaltstück (20) verbunden ist und in der Nähe der Rückwand (72) verläuft, welches untere Lichtbogenhorn (34) einen Randabsatz (92) aus einem gasabgebendem Material aufweist,
    - und einem Stapel aus annähernd senkrecht zur Längsmittelebene (70) von einer Seitenwand bis zur anderen verlaufenden Trennstegen (78) umfasst, wobei in mindestens zwei dieser Trennstege ein in der Längsmittelebene (70) verlaufender Ausschnitt (80) ausgebildet ist,
    dadurch gekennzeichnet, dass es mindestens einen parallel zum unteren Lichtbogenhorn (34) angeordneten Wiederverfestigungssteg (79) mit mindestens einer Metallfläche umfasst, die in der Längesmittelebene (70) mindestens die halbe Fläche der Ausschnitte (80) überdeckt.
  2. Elektrisches Schaltgerät nach Anspruch 1, dadurch gekennzeichnet, dass die Metallfläche des mindestens einfach vorhandenen Wiederverfestigungsstegs (79) mindestens einem Viertel der Fläche der Lichtbogenlöschkammer in der Ebene XY entspricht, wobei die genannte Metallfläche annähernd mittig in Bezug zum Grund (81) der in den Trennstegen (78) ausgebildeten Ausschnitte (80) angeordnet ist.
  3. Elektrisches Schaltgerät nach Anspruch 2, dadurch gekennzeichnet, dass die Breite und die Länge des Wiederverfestigungsstegs (79) mindestens 50% der Breite (I) bzw. der Länge (L) der genannten Trennstege (78) entspricht.
  4. Elektrisches Schaltgerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass ein in der Längsmittelebene (70) verlaufender Ausschnitt (100) im Wiederverfestigungssteg (79) ausgebildet ist, wobei die Länge des genannten Ausschnitts kleiner ist als die Länge (L1) der Ausschnitte (80) der übrigen Stege (78).
  5. Elektrisches Schaltgerät nach Anspruch 4, dadurch gekennzeichnet, dass die Länge des Ausschnitts (100) maximal 60% der Länge (L1) der Ausschnitte (80) entspricht.
  6. Elektrisches Schaltgerät nach Anspruch 5, dadurch gekennzeichnet, dass die Länge des Ausschnitts (100) zwischen 20 und 50 % der Länge (L1) der Ausschnitte (80) beträgt.
  7. Elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der genannte, mindestens einfach vorhandene Wiederverfestigungssteg (79) eine größere Dicke aufweist als die übrigen Stege (78).
  8. Elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der genannte, mindestens einfach vorhandene Wiederverfestigungssteg (79) zwischen dem unteren Lichtbogenhorn (34) und dem ersten Trennsteg (78) angeordnet ist.
  9. Elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es einen einzelnen Wiederverfestigungssteg (79) aufweist.
  10. Elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es ein oberes Lichtbogenhorn (96) aus einem Leiterwerkstoff umfasst, das annähernd parallel zu den Trennstegen (78) verläuft.
  11. Elektrisches Schaltgerät nach Anspruch 10, dadurch gekennzeichnet, dass das obere Lichtbogenhorn (96) mit dem Gesamtstapel der Trennstege (78) einen Winkel (δ) bildet.
  12. Elektrisches Schaltgerät nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass am oberen Lichtbogenhorn (96) ein Überhang (98) ausgebildet ist, der in Richtung des vorderen Lichtbogenhorns (34) parallel zur Rückwand (72) verläuft, wobei das bewegliche Schaltstück (22) dazu dient, in der Ausschaltstellung dem genannten Überhang (98) gegenüber zu liegen.
  13. Elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das untere Lichtbogenhorn (34) einen Randabsatz (92) aufweist, der aus dem hinteren Abschnitt des genannten unteren Lichtbogenhorns (34) heraussteht.
EP06354024A 2005-09-16 2006-07-25 Trennschalter mit einer verkleineten Lichtbogenlöschkammer Active EP1764811B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0509487A FR2891082B1 (fr) 2005-09-16 2005-09-16 Dispositif de coupure comportant une chambre d'extinction d'arc de taille reduite

Publications (2)

Publication Number Publication Date
EP1764811A1 EP1764811A1 (de) 2007-03-21
EP1764811B1 true EP1764811B1 (de) 2008-11-05

Family

ID=36351873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06354024A Active EP1764811B1 (de) 2005-09-16 2006-07-25 Trennschalter mit einer verkleineten Lichtbogenlöschkammer

Country Status (6)

Country Link
US (1) US7459652B2 (de)
EP (1) EP1764811B1 (de)
CN (1) CN1933068B (de)
AT (1) ATE413686T1 (de)
DE (1) DE602006003494D1 (de)
FR (1) FR2891082B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7875822B2 (en) * 2008-01-10 2011-01-25 General Electric Company Ablative-based multiphase current interrupter
US7705263B2 (en) * 2008-04-15 2010-04-27 General Electric Company Arc chute assembly for a circuit breaker
FR2983003B1 (fr) 2011-11-22 2014-09-12 Schneider Electric Ind Sas Dispositif et procede de protection contre un arc electrique
US9064659B2 (en) * 2013-03-12 2015-06-23 Sensata Technologies Massachusetts, Inc. Circuit interruption device with constrictive arc extinguishing feature
CN106783417B (zh) 2015-11-23 2020-08-11 森萨塔科技公司 断路器
EP3457423B1 (de) * 2017-09-15 2021-12-22 ABB Schweiz AG Umschalter

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1963643A (en) * 1933-02-23 1934-06-19 Westinghouse Electric & Mfg Co Circuit interrupter
US2468422A (en) * 1945-06-20 1949-04-26 Ite Circuit Breaker Ltd Arc chute
KR900007273B1 (ko) 1986-09-16 1990-10-06 미쓰비시전기 주식회사 회로 차단기
FR2803687B1 (fr) * 2000-01-07 2002-02-22 Schneider Electric Ind Sa Pole pour disjoncteur electrique, muni d'une chambre d'extinction d'arc large
FR2803686B1 (fr) * 2000-01-07 2002-02-22 Schneider Electric Ind Sa Pole pour disjoncteur electrique, muni d'une chambre d'extinction d'arc a ecrans dielectriques
US6204465B1 (en) * 2000-04-03 2001-03-20 Eaton Corporation Circuit breaker with arc gas engaging paddles on a trip bar and/or crossbar
FR2807565B1 (fr) * 2000-04-10 2003-03-14 Schneider Electric Ind Sa Pole pour un disjoncteur electrique limiteur de basse tension de puissance et disjoncteur muni d'un tel pole
US6297465B1 (en) * 2000-05-25 2001-10-02 Eaton Corporation Two piece molded arc chute
DE102004002932B4 (de) * 2004-01-14 2013-02-28 Siemens Aktiengesellschaft Lichtbogen-Löscheinrichtung für einen elektrischen Schalter
US7034242B1 (en) * 2004-11-09 2006-04-25 Eaton Corporation Arc chute and circuit interrupter employing the same

Also Published As

Publication number Publication date
US7459652B2 (en) 2008-12-02
US20070062912A1 (en) 2007-03-22
FR2891082A1 (fr) 2007-03-23
CN1933068A (zh) 2007-03-21
ATE413686T1 (de) 2008-11-15
EP1764811A1 (de) 2007-03-21
FR2891082B1 (fr) 2007-10-19
CN1933068B (zh) 2010-08-04
DE602006003494D1 (de) 2008-12-18

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