EP1103996B1 - Device for switching for an interrupting apparatus - Google Patents

Device for switching for an interrupting apparatus Download PDF

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Publication number
EP1103996B1
EP1103996B1 EP00403260A EP00403260A EP1103996B1 EP 1103996 B1 EP1103996 B1 EP 1103996B1 EP 00403260 A EP00403260 A EP 00403260A EP 00403260 A EP00403260 A EP 00403260A EP 1103996 B1 EP1103996 B1 EP 1103996B1
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EP
European Patent Office
Prior art keywords
switching
side walls
casing
arc extinguishing
cage
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
EP00403260A
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German (de)
French (fr)
Other versions
EP1103996A1 (en
EP1103996B2 (en
Inventor
Jean-Pierre Duchemin
Vincent Druelle
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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Publication date
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Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Priority to DE60027842T priority Critical patent/DE60027842T3/en
Publication of EP1103996A1 publication Critical patent/EP1103996A1/en
Publication of EP1103996B1 publication Critical patent/EP1103996B1/en
Application granted granted Critical
Publication of EP1103996B2 publication Critical patent/EP1103996B2/en
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
    • H01H9/36—Metal parts
    • H01H9/362—Mounting of plates in arc chamber

Definitions

  • the multipole switch device breaking device is constituted, for each pole, of a breaking box comprising two lateral walls between which is disposed a cage supporting a bridge of movable contacts associated with fixed contacts, and comprising two sets of several U-shaped arc-extinguishing vanes.
  • This device is characterized in that the side walls of the switch-off housing comprise guide means for the ends of the arc-extinguishing vanes. guiding means being further adapted to provide electrical insulation between the movable contacts and the ends of the arc extinction fins.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Circuit Breakers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Electronic Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Push-Button Switches (AREA)
  • Slide Switches (AREA)

Abstract

The multipolar switch has a container (20) with contact break chambers (19) and side walls (24). The side walls have end guide sections (16a) of extrusion arc protrusions (16) ensuring electrical isolation between the moving contacts and the extinction arc protrusions.

Description

La présente invention concerne un dispositif de coupure comprenant un boîtier de chambre de coupure d'arc électrique muni d'ailettes d'extinction d'arc, ce dispositif étant destiné à être utilisé dans chaque pôle d'appareils interrupteurs, notamment des disjoncteurs ou des contacteur-disjoncteurs basse tension multipolaires.The present invention relates to a cut-off device comprising an arc-breaking chamber housing provided with arcing extinguishing blades, this device being intended to be used in each pole of switchgear, in particular circuit-breakers or circuit breakers. multi-pole low-voltage switch-breaker.

Il existe différentes solutions pour la mise en place des ailettes d'extinction d'arc dans un boîtier de chambre de coupure de tels appareils interrupteurs. Le brevet DE19757332 décrit par exemple un dispositif dans lequel la cage du pont de contacts mobiles, située à l'intérieur du boîtier de la chambre de coupure, présente une forme de peigne dont les rainures sont aptes à loger les extrémités des ailettes d'extinction d'arc, assurant ainsi leur maintien. Dans le brevet EP0556109, les ailettes d'extinction d'arc sont isolées des contacts mobiles grâce également à des parois latérales situées de chaque côté de la cage du pont de contacts mobiles.There are various solutions for the installation of arc extinguishing fins in a switch chamber housing such switch devices. The patent DE19757332 for example describes a device in which the cage of the movable contact bridge, located inside the casing of the interrupting chamber, has a comb shape whose grooves are able to accommodate the ends of the extinguishing vanes. of bow, thus ensuring their maintenance. In patent EP0556109, the arc extinguishing fins are isolated from the movable contacts also through side walls located on each side of the cage of the movable contact bridge.

Cependant, il est également nécessaire d'assurer une bonne rigidité mécanique des parois latérales du boîtier de la chambre de coupure notamment à cause du souffle survenant lors d'un déclenchement du disjoncteur ou du contacteur-disjoncteur, provoqué en cas de court-circuit par exemple. Pour cela, il peut être nécessaire de renforcer la structure de ces parois latérales du boîtier.However, it is also necessary to ensure good mechanical rigidity of the side walls of the casing of the interrupting chamber in particular because of the blast occurring during a tripping of the circuit breaker or the contactor-circuit breaker, caused in the event of a short-circuit by example. For this, it may be necessary to strengthen the structure of these side walls of the housing.

L'invention a donc pour but de proposer un dispositif unique permettant à la fois de guider les ailettes d'extinction d'arc dans le boîtier de la chambre de coupure, de les isoler des contacts mobiles et de rigidifier en même temps les parois latérales du boîtier de la chambre de coupure.The object of the invention is therefore to propose a single device that makes it possible both to guide the arc extinguishing fins in the casing of the interrupting chamber, to isolate them from the moving contacts and to stiffen the side walls at the same time. of the casing of the interrupting chamber.

Selon l'invention, le dispositif de coupure d'appareil interrupteur multipolaire est constitué, pour chaque pôle, d'un boîtier de coupure comprenant deux parois latérales entre lesquelles est disposée une cage supportant un pont de contacts mobiles associés à des contacts fixes, et comprenant deux ensembles de plusieurs ailettes d'extinction d'arc en forme de U. Ce dispositif est caractérisé par le fait que les parois latérales du boîtier de coupure comportent des moyens de guidage pour les extrémités des ailettes d'extinction d'arc, ces moyens de guidage étant de plus aptes à assurer une isolation électrique entre les contacts mobiles et les extrémités des ailettes d'extinction d'arc. Selon une caractéristique de l'invention, ces moyens de guidage sont moulés avec chaque paroi latérale vers l'intérieur du boîtier de coupure et sont constitués d'un corps prolongé d'une nervure latérale formant, avec la paroi latérale, un logement pour recevoir les extrémités des d'ailettes d'extinction d'arc. De plus, le corps des moyens de guidage contribue également à renforcer la rigidité mécanique des parois latérales du boîtier de coupure.According to the invention, the multipole switch device breaking device is constituted, for each pole, of a breaking box comprising two lateral walls between which is disposed a cage supporting a bridge of movable contacts associated with fixed contacts, and comprising two sets of several U-shaped arc-extinguishing vanes. This device is characterized in that the side walls of the switch-off housing comprise guide means for the ends of the arc-extinguishing vanes. guiding means being further adapted to provide electrical insulation between the movable contacts and the ends of the arc extinction fins. According to one characteristic of the invention, these guide means are molded with each side wall towards the inside of the cut-off housing and consist of an extended body of a lateral rib forming, with the lateral wall, a housing for receiving the ends of the arc extinction fins. Of moreover, the body of the guiding means also contributes to reinforcing the mechanical rigidity of the side walls of the breaking box.

L'invention va maintenant être décrite avec plus de détails en se référant à un mode de réalisation donné à titre d'exemple et représenté par les dessins annexés sur lesquels :

  • la figure 1 montre une vue partielle des chambres de coupure d'un appareil interrupteur tripolaire dans laquelle ne figurent que les ensembles d'ailettes d'extinction d'arc,
  • la figure 2 représente une vue en coupe longitudinale d'une chambre de coupure selon l'invention.
The invention will now be described in more detail with reference to an embodiment given by way of example and represented by the appended drawings in which:
  • FIG. 1 shows a partial view of the breaking chambers of a three-pole switch apparatus in which only the sets of arc extinguishing vanes are shown,
  • FIG. 2 represents a view in longitudinal section of an interrupting chamber according to the invention.

Le dispositif de coupure décrit dans l'invention est situé dans une chambre de coupure 19 formée par un boîtier de coupure isolant 20 pour chaque pôle d'un appareil interrupteur, par exemple de type contacteur-disjoncteur. Ce boîtier de coupure 20 a une forme sensiblement parallélépipédique et comporte deux parois latérales 24 et une paroi de fond 25. Dans un appareil interrupteur multipolaire, les boîtiers de coupure 20 des différents pôles sont adjacents les uns aux autres et les parois latérales 24 adjacentes sont communes, comme représenté sur la figure 1.The cut-off device described in the invention is located in a breaking chamber 19 formed by an insulating breaking box 20 for each pole of a switch device, for example of the contactor-breaker type. This breaking box 20 has a substantially parallelepipedal shape and has two side walls 24 and a bottom wall 25. In a multipole switch device, the switching boxes 20 of the different poles are adjacent to each other and the adjacent side walls 24 are common, as shown in Figure 1.

La figure 2 montre une chambre de coupure dans laquelle se trouve un pont de contacts mobiles 11, monté à l'intérieur d'une cage 10 et muni d'un poussoir isolant 14 et de deux contacts mobiles 12. Chaque contact mobile 12 de ce pont 11 coopère avec un contact fixe non représenté sur les figures jointes. Le poussoir 14 et le pont de contacts 11 sont guidés en translation dans la cage 10 selon un axe repéré X. Lors d'un déclenchement de l'appareil interrupteur, le mécanisme de déclenchement agit sur le poussoir 14 pour séparer les contacts mobiles 12 des contacts fixes. Un ressort de compression 18 prenant appui d'une part sur le fond 25 du boîtier de coupure grâce à une forme adaptée 13 de la cage 10 et d'autre part sous le pont de contacts 11, tend à appuyer les contacts fixes 12 contre les contacts fixes.FIG. 2 shows a breaking chamber in which there is a mobile contact bridge 11, mounted inside a cage 10 and provided with an insulating pusher 14 and with two movable contacts 12. Each movable contact 12 of this bridge 11 cooperates with a fixed contact not shown in the accompanying figures. The pusher 14 and the contact bridge 11 are guided in translation in the cage 10 along an axis marked X. When the switch device is triggered, the triggering mechanism acts on the pusher 14 to separate the movable contacts 12 from the fixed contacts. A compression spring 18 bearing on the one hand on the bottom 25 of the breaking box thanks to a suitable shape 13 of the cage 10 and secondly under the bridge of contacts 11, tends to press the fixed contacts 12 against the fixed contacts.

Pour dissiper l'arc électrique pouvant survenir lors d'un déclenchement de l'appareil, deux ensembles d'ailettes 17 sont disposés dans le boîtier de coupure de part et d'autre de la cage 10, de façon à pouvoir agir sur les arcs électriques émanant des deux contacts mobiles 12. Chaque ensemble d'ailettes 17 est constitué d'une pluralité d'ailettes d'extinction d'arc 16 métalliques, parallèles les unes aux autres, en forme de U, chacune dotée d'une base 16b et de deux extrémités 16a dirigées vers la cage 10 ; chaque ensemble d'ailettes 17 comporte aussi une pièce d'assemblage 15 isolante, perpendiculaire aux ailettes 16, entourant la base 16b des ailettes 16 et destinée à fixer et à maintenir celles-ci entre elles à une distance fixe.To dissipate the electric arc that may occur during a triggering of the device, two sets of fins 17 are arranged in the casing on either side of the cage 10, so as to act on the arcs From each of the movable contacts 12, each set of vanes 17 is formed of a plurality of U-shaped mutually parallel metal arc extender fins 16 each having a base 16b. and two ends 16a directed towards the cage 10; each set of fins 17 also comprises an insulating assembly piece 15, perpendicular to the fins 16, surrounding the base 16b of the fins 16 and intended to fix and hold them together at a fixed distance.

Les extrémités 16a des ailettes sont disposées à proximité de chaque contact mobile 12, suivant une direction parallèle à l'axe X correspondant au mouvement effectué par le pont de contacts mobiles 11 lors d'un déclenchement, de façon à agir le plus efficacement possible contre un arc électrique survenant entre un contact fixe et un contact mobile.The ends 16a of the fins are disposed near each movable contact 12, in a direction parallel to the axis X corresponding to the movement made by the movable contact bridge 11 during a trip, so as to act as effectively as possible against an electric arc occurring between a fixed contact and a movable contact.

Néanmoins les extrémités 16a des ailettes 16 doivent être protégées par une cloison isolante du contact mobile 12, du contact fixe et du pont 11. De plus, il est judicieux de prévoir des moyens de guidage pour les ensembles d'ailettes 17, de manière à pouvoir les insérer facilement et à les maintenir dans le boîtier de coupure 20. Enfin, étant donné la puissance que peut représenter le souffle lié à l'arc électrique au moment d'un déclenchement sur court-circuit par exemple, le boîtier de coupure 20 peut être soumis à des pressions importantes et il peut s'avérer nécessaire de rigidifier les parois latérales 24 du boîtier de coupure 20, à proximité du pont de contacts mobiles 11.Nevertheless, the ends 16a of the fins 16 must be protected by an insulating partition of the movable contact 12, the fixed contact and the bridge 11. In addition, it is advisable to provide guide means for the fin assemblies 17, so as to It is also possible to insert them easily and to keep them in the cut-off box 20. Finally, given the power that can be represented by the blast associated with the electric arc at the time of a short-circuit trip, for example, the breaking box 20 can be subjected to significant pressures and it may be necessary to stiffen the side walls 24 of the cutoff housing 20, near the movable contact bridge 11.

Pour répondre à ces trois exigences, l'invention prévoit un dispositif dans lequel les parois latérales 24 du boîtier de coupure 20 comportent des moyens de guidage pour les extrémités 16a des ailettes d'extinction d'arc 16. Selon un mode de réalisation préférée, ces moyens de guidage comportent un corps 21, moulé avec chaque paroi latérale 24 vers l'intérieur du boîtier de coupure 20 et prolongé par une nervure latérale 22 sensiblement parallèle à la paroi latérale 24, formant avec cette paroi un logement 23 apte à recevoir les extrémités 16a des ailettes d'extinction d'arc 16. Le corps 21 peut, à titre d'exemple, présenter une section sensiblement rectangulaire sur toute la hauteur de la paroi 24. La longueur de la nervure latérale 22 permet de recouvrir suffisamment les extrémités 16a pour les isoler électriquement des contacts mobiles 12, des contacts fixes et du pont de contacts mobiles 11, lors de l'apparition d'un arc électrique.In order to meet these three requirements, the invention provides a device in which the side walls 24 of the breaking box 20 comprise guiding means for the ends 16a of the arc extinguishing vanes 16. According to a preferred embodiment, these guide means comprise a body 21, molded with each side wall 24 towards the inside of the cut-off housing 20 and extended by a lateral rib 22 substantially parallel to the side wall 24, forming with this wall a housing 23 adapted to receive the ends 16a of the arc extinguishing vanes 16. The body 21 may, for example, have a substantially rectangular section over the entire height of the wall 24. The length of the lateral rib 22 can sufficiently cover the ends 16a to electrically isolate them from the movable contacts 12, fixed contacts and the movable contact bridge 11, during the occurrence of an electric arc.

Des ergots 26, moulé avec chaque paroi latérale 24 vers l'intérieur du boîtier de coupure 20, sont destinés à guider et à maintenir latéralement chaque ensemble d'ailettes 17 en prenant appui sur la face arrière 15a de la pièce d'assemblage 15 des ailettes 16. Ainsi, grâce d'une part à ces ergots 26 et d'autre part aux moyens de guidage des extrémités 16a des ailettes d'extinction d'arc 16, chaque ensemble d'ailettes peut être inséré rapidement et maintenu dans un boîtier de coupure 20, facilitant ainsi la fabrication des chambres de coupure 19.Pins 26, molded with each side wall 24 towards the inside of the cut-off box 20, are intended to guide and hold each set of fins laterally 17 while bearing on the rear face 15a of the connecting piece 15 of the fins 16. Thus, thanks firstly to these pins 26 and secondly at the guide means of the ends 16a of the arc extinguishing vanes 16, each set of vanes can be rapidly inserted and held in a switch-off housing 20, thus facilitating the manufacture of the breaking chambers 19.

Le corps 21 permet en outre de renforcer notablement, sans rajouter d'élément supplémentaire, la rigidité des parois latérales 24 à proximité de la zone où peut se déclencher un arc électrique entre contacts mobiles et contacts fixes, c'est-à-dire là où la pression exercée sur ces parois latérales est la plus forte. On peut ainsi réduire l'épaisseur générale des parois latérales 24 sachant qu'elles sont renforcées dans leurs zones les plus critiques ; il s'en suit une optimisation générale des dimensions pour un appareil interrupteur multipolaire.The body 21 also makes it possible to significantly reinforce, without adding any additional element, the rigidity of the side walls 24 close to the zone where an electric arc can be triggered between mobile contacts and fixed contacts, that is to say there where the pressure exerted on these side walls is the strongest. It is thus possible to reduce the overall thickness of the side walls 24, knowing that they are reinforced in their most critical zones; it follows a general optimization of dimensions for a multipolar switch device.

Par ailleurs, les moyens de guidage des extrémités 16a des ailettes d'extinction d'arc 16 servent également à faciliter l'insertion et à assurer le maintien latéral de la cage 10 du pont de contacts mobiles 11 dans le boîtier de coupure 20. Le corps 21 des moyens de guidage comporte en effet une face 21a dans un plan perpendiculaire à la paroi latérale 24, à l'opposé de la nervure 22. Les faces 21a de deux corps 21 situés le long d'une même paroi latérale 24 d'un boîtier de coupure 20 forment avec cette paroi latérale 24 un logement 27 dans lequel la cage 10 peut coulisser suivant l'axe X au moment de son insertion et qui ensuite assure le maintien latéral de cette cage 10 et donc du pont de contacts mobiles 11.Moreover, the means for guiding the ends 16a of the arc extinguishing vanes 16 also serve to facilitate the insertion and to maintain the cage 10 of the movable contact bridge 11 in the cut-off housing 20 laterally. body 21 of the guide means in fact comprises a face 21a in a plane perpendicular to the side wall 24, opposite the rib 22. The faces 21a of two bodies 21 located along the same side wall 24 of a breaking box 20 form with this side wall 24 a housing 27 in which the cage 10 can slide along the X axis at the time of its insertion and which then ensures the lateral maintenance of the cage 10 and thus the bridge of movable contacts 11 .

Claims (4)

  1. Switching device of a multipolar switch unit consisting, for each pole, of a casing (20) of one switching chamber (19) comprising:
    - two side walls (24) between which is placed a cage (10) supporting a bridge (11) of two movable contacts (12) associated with fixed contacts,
    - two sets (17) of several U-shaped arc extinguishing splitters (16),
    characterized in that the side walls (24) of the switching casing (20) comprise means of guiding the ends (16a) of the arc extinguishing splitters (16), these guidance means also being capable of providing electric insulation between the movable contacts (12) and the ends (16a) of the arc extinguishing splitters.
  2. Switching device according to Claim 1, characterized in that these guidance means comprise a body (21), moulded with each side wall (24) towards the inside of the switching casing (20) and extended by a side rib (22) forming, with the side wall (24), a housing (23) capable of receiving the ends (16a) of the arc extinguishing splitters.
  3. Switching device according to Claim 2, characterized in that the body (21) of the guidance means also helps to reinforce the mechanical rigidity of the side walls (24) of the switching casing in the zone where an electric arc may be triggered between fixed contacts and movable contacts.
  4. Switching device according to Claim 2, characterized in that the body (21) of the guidance means has a face (21a) perpendicular to the side wall (24), opposite the rib (22), which provides the guidance and lateral retention of the cage (10) of the bridge of movable contacts in the switching casing (20).
EP00403260.3A 1999-11-25 2000-11-22 Device for switching for an interrupting apparatus Expired - Lifetime EP1103996B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE60027842T DE60027842T3 (en) 1999-11-25 2000-11-22 Switch-off device for a switching device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9914960 1999-11-25
FR9914960A FR2801722B1 (en) 1999-11-25 1999-11-25 CUTTING DEVICE FOR SWITCHING APPARATUS

Publications (3)

Publication Number Publication Date
EP1103996A1 EP1103996A1 (en) 2001-05-30
EP1103996B1 true EP1103996B1 (en) 2006-05-10
EP1103996B2 EP1103996B2 (en) 2013-08-14

Family

ID=9552622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00403260.3A Expired - Lifetime EP1103996B2 (en) 1999-11-25 2000-11-22 Device for switching for an interrupting apparatus

Country Status (4)

Country Link
EP (1) EP1103996B2 (en)
AT (1) ATE326060T1 (en)
DE (1) DE60027842T3 (en)
FR (1) FR2801722B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013178257A1 (en) 2012-05-30 2013-12-05 Abb Ab A switching device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10356271B4 (en) 2003-11-28 2008-02-14 Siemens Ag switchgear
JP2012199000A (en) * 2011-03-18 2012-10-18 Fuji Electric Fa Components & Systems Co Ltd Multipole circuit breaker
US10224162B2 (en) 2014-09-24 2019-03-05 Siemens Aktiengesellschaft Switching device with arc extinguishing device

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Publication number Priority date Publication date Assignee Title
DE1415944A1 (en) * 1961-03-24 1969-02-06 Licentia Gmbh Switchgear with an arc chamber of unequal width
DE1911660A1 (en) * 1969-03-07 1970-10-01 Bbc Brown Boveri & Cie Arc extinguishing device
DE7022279U (en) † 1970-06-13 1971-09-09 Siemens Ag Electric switch
US4247746A (en) * 1977-10-04 1981-01-27 Dorman Smith Switchgear Limited Electric circuit breaker
US4405847A (en) * 1980-12-23 1983-09-20 Whipp & Bourme (1975) Limited Arc chutes
EP0138174B1 (en) * 1983-10-15 1987-09-16 Licentia Patent-Verwaltungs-GmbH Quenching device for an automatic circuit breaker
US4866226A (en) * 1987-07-13 1989-09-12 Mitsubishi Denki Kabushiki Kaisha Multi-phase circuit breaker employing arc extinguishing apparatus
DE8903583U1 (en) * 1989-03-22 1989-05-11 AEG Niederspannungstechnik GmbH, 24534 Neumünster Arc extinguishing device
FR2687251B1 (en) † 1992-02-11 1994-04-29 Telemecanique CUTTING STRUCTURE FOR CIRCUIT BREAKER.
DE19757332C1 (en) * 1997-12-22 1999-07-22 Siemens Ag Arc quenching device for a switching device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013178257A1 (en) 2012-05-30 2013-12-05 Abb Ab A switching device

Also Published As

Publication number Publication date
DE60027842T2 (en) 2006-10-05
FR2801722A1 (en) 2001-06-01
EP1103996A1 (en) 2001-05-30
DE60027842D1 (en) 2006-06-14
FR2801722B1 (en) 2001-12-28
ATE326060T1 (en) 2006-06-15
DE60027842T3 (en) 2013-12-12
EP1103996B2 (en) 2013-08-14

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