EP2507810B1 - Appareil de commutation d'installation avec un dispositif d'extinction d'arc électrique - Google Patents

Appareil de commutation d'installation avec un dispositif d'extinction d'arc électrique Download PDF

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Publication number
EP2507810B1
EP2507810B1 EP10771027.9A EP10771027A EP2507810B1 EP 2507810 B1 EP2507810 B1 EP 2507810B1 EP 10771027 A EP10771027 A EP 10771027A EP 2507810 B1 EP2507810 B1 EP 2507810B1
Authority
EP
European Patent Office
Prior art keywords
retaining pin
housing
plate
prechamber
switching device
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.)
Active
Application number
EP10771027.9A
Other languages
German (de)
English (en)
Other versions
EP2507810A1 (fr
Inventor
Dirk Hauck
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.)
ABB AG Germany
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ABB AG Germany
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Publication date
Application filed by ABB AG Germany filed Critical ABB AG Germany
Publication of EP2507810A1 publication Critical patent/EP2507810A1/fr
Application granted granted Critical
Publication of EP2507810B1 publication Critical patent/EP2507810B1/fr
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Anticipated expiration legal-status Critical

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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
    • H01H9/346—Details concerning the arc formation chamber

Definitions

  • the invention relates to an installation switching device having an insulating material housing and an arc quenching device, comprising an arc splitter stack and an antechamber bounded by at least one antechamber plate forming a gap between the antechamber plate and the inner wall of the insulating housing, according to the preamble of claim 1.
  • a generic Instaltationsschaltêt can be, for example, a circuit breaker or a circuit breaker.
  • Circuit-breakers and miniature circuit breakers are designed to disconnect electrical lines in the event of a fault from the power supply network, which are overloaded with high-current overcurrents.
  • a fixed and a movable contact piece are typically provided, which are connected to the respective terminals.
  • Such extinguishing device which operates on the principle of forced extinction, preferably consists of an antechamber, which narrows the arc and brings to a convenient length, as well as from a subsequent splitter stack, which divides the arc in partial arcs.
  • a subsequent splitter stack which divides the arc in partial arcs.
  • sheets or plates made of ceramic or a gas-emitting material are used.
  • Such parts are preferably supported by corresponding formations of the housing walls from the outside.
  • An inner boundary of the pre-chamber space is usually achieved by appropriate arrangement of the arc runners.
  • the extinguishing device is important.
  • Prerequisite for an intensive short-circuit current limit is a fast and wide contact opening pending short circuit.
  • the drawn arc commutates from the contacts on the arc guide rails, to then in the Deion-quenching chamber, that is the splitter stack to divide. There, a high arc voltage is generated to limit the current, so that the arc goes out.
  • a gap is often provided which allows a reduction of the excess pressure from the quenching plate stack, without disturbing the development of the arc.
  • the backflowing pressure wave compensates for the negative pressure and for deionization in the contact area.
  • Vorschblocks In the preparation of Vorschblocks additional operations are to be made, in particular, it can not be built by simply supplying individual plates within the device housing, but he must be supplied completely prefabricated as an assembly of the assembly line. Finally, the required for holding the Vorschblockes recesses in the switch housing to a local weakening of the housing wall, which is undesirable, and an additional operation in the attachment of the cam of Vorschblocks in the recesses.
  • the US 2008/0073326 A1 shows a deletion device with a Vorhuntblock.
  • An insert body defines a chamber in which the electrical contacts move.
  • the insert body carries outwardly projecting ribs, the inside of the housing has corresponding groove-shaped recesses.
  • the insert body is held with its ribs in the grooves by snug against the inner wall of the housing.
  • the insulating housing in Vorhunt Scheme carries a retaining pin
  • the Vorhuntplatte is provided with a holding opening
  • the retaining pin engages in the holding opening, and thereby the Vorhuntplatte is held on the housing inner wall, wherein on the Vorhuntplatte a coronal Plattenanformung is attached, the interior of the holding opening forms. Falling out of the Vorhuntplatte is thus prevented in a simple manner, the tight fit of Vorhuntplatte on the housing inner wall is guaranteed, a weakening of the housing wall does not take place, and it can be inserted each Vorschplatte individually and connected to the retaining pin by simply pressing, so that the assembly is also suitable for automated quick assembly.
  • the retaining pin may be performed in a preferred embodiment substantially as a cylindrical body which is fixedly connected to the housing inner wall, for example, in the manufacture of the housing has been formed as a plastic molding in the same operation with.
  • a weakening of the Vorschplatte is advantageously avoided because an opening of the Vorschplatten to create the retaining opening is not required.
  • the annular rim which thus surrounds the holding opening, can simultaneously act as a spacer to a return gap between the Vorschplatte and the housing inner wall produce and permanently open had.
  • the wall of the coronal Plattenanformung at least one slot which engages in the direction of the surface of the pre-chamber plate.
  • a material expansion of the wall surrounding the holding opening is made possible, and the flexibility is increased.
  • the slotted wall of the Plattenanformung can be compressed. It arises in a sense a kind of ferrule.
  • more than one slot can be introduced, for example 2 or 3 or 4 slots, whereby the flexibility of the crimp sleeve wall is further increased.
  • the retaining pin is surrounded by a coronal Gepuruseanformung whose inner diameter is dimensioned so that the coronal Plattenanformung finds in it.
  • the designed in the manner of a ferrule crimp sleeve wall of the coronal Plattenanformung can be advantageously held in the coronal Gepuruseanformung and thus pressed or squeezed between the outer shell of the retaining pin and the inner peripheral wall of the annular housing wall, resulting in a particularly strong support the Vorcroplatte on the housing inner wall.
  • the outer diameter of the retaining pin is at least in a circumferential portion of its lateral surface greater than the inner diameter of the annular Plattenanformung so that upon engagement of the retaining pin in the Plattenanformung a crimp connection between the Vorhuntplatte and the retaining pin is formed.
  • the connection is then designed in the manner of an interference fit, it may form a frictional engagement and / or adhesion and / or positive engagement between the ferrule and the retaining pin.
  • the ring surrounding the retaining pin prevents the wall of the ferrule from escaping to the outside.
  • the connection takes place in the manner of a push-button connection.
  • the retaining pin carries at its free end an undercut.
  • the undercut By the undercut a circumferential enlargement of the retaining pin is formed.
  • the material of the coronal Plattenanformung can flow around the undercut and further strengthen the connection.
  • the material of the coronal Plattenanformung is softer than the material of the retaining pin and the annular Gepuruseanformung.
  • the housing may be formed with the retaining pin of a thermosetting plastic, and the Vorschplatte with the molded ferrule may consist of a thermoplastic.
  • the prechamber plate may also have a metal core of iron or ferrite, for example, and be encapsulated by thermoplastic, forming a ferrule on the outer broad sides. The material of the ferrule then flows around in the inventive design of retaining pin and ferrule the retaining pin and is pressed into the contour of the coronal Gepurformung in the space of the undercut. This leads to a positive and frictional connection in the connection between the Vorschplatte and the inside of the housing.
  • the pre-chamber plate carries at its two broad sides in each case at least one this-sided and an other-side annular plate molding, which are arranged symmetrically to the broad side of the pre-chamber plate.
  • an antechamber plate according to the invention therefore, two mutually opposite compression sleeves are integrally formed relative to one another with respect to the broad side of the prechamber plate. This makes it possible to use the Vorhuntplatte both in the top and in the bottom of a built-up shell shell. Only one design variant of the antechamber plate is needed, which is suitable for both sides of the prechamber space.
  • the assembly of the device is simplified because it only one kind of Vorcroplatte the automatic assembly machine to be supplied, the assembly of the Vorcroplatte is done simply by pressing on the inner wall of the antechamber and the retaining pin located there.
  • FIG. 1 shows an insight into the open housing half shell 11 of a service switching device 10, here a circuit breaker.
  • a service switching device 10 here a circuit breaker.
  • This has a housing in shell construction, that is, two housing halves form the housing when assembled along a peripheral abutment edge and then secured together by suitable connecting means, such as rivets or by latching means such as locking tongues.
  • the housing 11 of the service switching device 10 has a front or operating side 22, a rear or mounting side 23, two lateral narrow sides 24 and two broad sides 25.
  • fastening means are provided with which the service switching device 10 in series mounting on a standard profile support rail, for example a hat profile support rail, can be fastened together with other service switching devices.
  • the splitter plate area 13 may be mentioned, in which a number of webs 26 extending parallel to the attachment side 23 are arranged, which serve to hold the quenching plates of the arc splitter stack.
  • the contact area 27 To the right of it is the contact area 27, in which the switching arc takes its output when tearing apart the movable and fixed contact piece.
  • the prechamber space This is limited by two Vorschplatten 14 to the broad sides of the housing.
  • One of the pre-chamber plates 14 is in the Fig.
  • Fig. 2 . 3 and 4 show further details of the attachment of the Vorschplatte 14 on the housing wall 11. Between the inside of the housing wall 11 and the Vorschplatte 14 is a gap 28 - see Fig. 2 - Which allows a reduction of the excess pressure from the quenching plate stack, without disturbing the development of the arc.
  • the backflowing pressure wave compensates for the negative pressure and for deionization in the contact area.
  • a retaining pin 15 is attached to the inside of the broad side 25 of the insulating housing 11.
  • the pre-chamber plate 14 is provided with a holding opening 16.
  • the pre-chamber plate 14 has such a holding opening on each of its two broad sides.
  • the pre-chamber plate 14 shown there is attached with its broadside facing away from the viewer on the corresponding retaining pin on the inner wall 11 of the housing, so that one sees the other holding aperture on the viewer facing broadside.
  • Both holding openings are symmetrical to the broad side of the pre-chamber plate 14 attached thereto. Characterized in that the retaining pin 15 engages in the holding opening 16, the pre-chamber plate 14 is held on the housing inner wall 11.
  • the holding opening 16 is designed such that on the Vorschplatte 14 a ring-shaped Plattenanformung 17 is attached with an annular wall 18, whose Interior forms the holding opening 16.
  • the wall 18 of the coronal Plattenanformung 17 carries at least one slot 19 carries, which passes through in the direction of the surface of the pre-chamber plate 14.
  • two opposing slots are attached.
  • the annular wall 18 is divided into two semicircular part walls, which can be pushed towards each other in the manner of a ferrule or pressed apart.
  • the retaining pin 15 is surrounded by a coronary Gepuruseanformung 20 whose inner diameter is dimensioned so that the annular Plattenanformung 17 is received therein.
  • the retaining pin 15 has approximately a cylindrical shape
  • the annular Plattenanformung 17 has approximately a cylindrical interior.
  • the annular housing 20 also has approximately a cylindrical shape whose height determines the minimum distance to which the Vorschplatte 14 of the inside of the housing wall 11 can be approximated.
  • the height of the wall of the annular housing molding 20 determines the width of the above-mentioned remindströmspaltes 28.
  • the outer diameter of the retaining pin 15 is greater than the inner diameter of the annular Plattenanformung 17 at least in a circumferential portion of its lateral surface, so that upon engagement of the retaining pin 15 in the Plattenanformung 17 a crimp connection between the Vorschplatte 14 and the retaining pin 15 is formed.
  • the lateral lateral surface of the retaining pin 15 is slightly conical, wherein the taper takes place in the direction of the housing inner wall 11 out.
  • the housing inner wall 11 facing away from the free end of the retaining pin 15 is wider than the inner diameter of the annular Plattenanformung 18.
  • the retaining pin 15 thus carries due to the conical shape of the lateral surface at its free end an undercut 21.
  • Such undercut can of course also in other ways and manner, for example, by a circumferential ring or other, known in the art, means are realized.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Breakers (AREA)

Claims (7)

  1. Appareil de commutation d'installation (10) comprenant un boîtier en matériau isolant (11) et un dispositif d'extinction d'arc électrique (12) comprenant un paquet de tôles d'extinction d'arc électrique et une préchambre limitée par au moins une plaque de préchambre (14) en formant une fente entre la plaque de préchambre (14) et la paroi intérieure du boîtier en matériau isolant (11), caractérisé en ce que le boîtier en matériau isolant (11) porte, dans la région de la préchambre, une goupille de retenue (15), en ce que la plaque de préchambre (14) est pourvue d'une ouverture de retenue (16), en ce que la goupille de retenue (15) s'engage dans l'ouverture de retenue (16) et de ce fait la plaque de préchambre (14) est retenue sur la paroi intérieure du boîtier (11), une formation de plaque (17) en forme de couronne étant montée sur la plaque de préchambre (14), dont l'espace interne forme l'ouverture de retenue (16).
  2. Appareil de commutation d'installation (10) selon la revendication 1, caractérisé en ce que la paroi (18) de la formation de plaque (17) en forme de couronne porte au moins une fente (19) qui s'étend dans la direction de la surface de la plaque de préchambre (14).
  3. Appareil de commutation d'installation (10) selon la revendication 1, caractérisé en ce que la goupille de retenue (15) est entourée par une formation de boîtier (20) en forme de couronne, dont le diamètre intérieur est dimensionné de telle sorte que la formation de plaque (17) en forme de couronne y soit logée.
  4. Appareil de commutation d'installation (10) selon la revendication 3, caractérisé en ce que le diamètre extérieur de la goupille de retenue (15), au moins dans une région partielle périphérique de sa surface d'enveloppe, est supérieur au diamètre intérieur de la formation de plaque (17) en forme de couronne, de telle sorte que lors de l'engagement de la goupille de retenue (15) dans la formation de plaque (17), il se produise une connexion par écrasement entre la plaque de préchambre (14) et la goupille de retenue (15).
  5. Appareil de commutation d'installation (10) selon la revendication 4, caractérisé en ce que la goupille de retenue (15) porte à son extrémité libre une contre-dépouille (21).
  6. Appareil de commutation d'installation (10) selon la revendication 5, caractérisé en ce que le matériau de la formation de plaque (17) en forme de couronne est plus tendre que le matériau de la goupille de retenue (15) et de la formation de boîtier (20) en forme de couronne.
  7. Appareil de commutation d'installation (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que la plaque de préchambre (14) porte, au niveau de ses deux côtés larges, à chaque fois au moins une formation de plaque (17, 17') en forme de couronne d'un côté et de l'autre, lesquelles sont disposées symétriquement par rapport au côté large de la plaque de préchambre (14).
EP10771027.9A 2009-12-04 2010-10-21 Appareil de commutation d'installation avec un dispositif d'extinction d'arc électrique Active EP2507810B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009057093A DE102009057093B4 (de) 2009-12-04 2009-12-04 Installationsschaltgerät mit einer Lichtbogenlöscheinrichtung
PCT/EP2010/006441 WO2011066888A1 (fr) 2009-12-04 2010-10-21 Appareil de commutation d'installation avec un dispositif d'extinction d'arc électrique

Publications (2)

Publication Number Publication Date
EP2507810A1 EP2507810A1 (fr) 2012-10-10
EP2507810B1 true EP2507810B1 (fr) 2014-06-04

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ID=43430937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10771027.9A Active EP2507810B1 (fr) 2009-12-04 2010-10-21 Appareil de commutation d'installation avec un dispositif d'extinction d'arc électrique

Country Status (4)

Country Link
EP (1) EP2507810B1 (fr)
CN (1) CN201708061U (fr)
DE (1) DE102009057093B4 (fr)
WO (1) WO2011066888A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1780684A (en) * 1928-02-04 1930-11-04 Gen Electric Circuit-interrupting device
DE3311052A1 (de) * 1983-03-25 1984-09-27 Siemens AG, 1000 Berlin und 8000 München Selbstschalter, insbesondere leitungsschutzschalter
DE3413555A1 (de) 1984-04-11 1985-10-24 Brown, Boveri & Cie Ag, 6800 Mannheim Loescheinrichtung fuer elektrische schalter
US20080073326A1 (en) 2006-09-21 2008-03-27 Thangavelu Asokan Ablative Circuit Interruption Device

Also Published As

Publication number Publication date
CN201708061U (zh) 2011-01-12
WO2011066888A1 (fr) 2011-06-09
DE102009057093B4 (de) 2011-12-15
EP2507810A1 (fr) 2012-10-10
DE102009057093A1 (de) 2011-06-09

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