EP0898779B1 - Disjoncteur pour basse tension avec rails de raccordement - Google Patents

Disjoncteur pour basse tension avec rails de raccordement Download PDF

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Publication number
EP0898779B1
EP0898779B1 EP97923817A EP97923817A EP0898779B1 EP 0898779 B1 EP0898779 B1 EP 0898779B1 EP 97923817 A EP97923817 A EP 97923817A EP 97923817 A EP97923817 A EP 97923817A EP 0898779 B1 EP0898779 B1 EP 0898779B1
Authority
EP
European Patent Office
Prior art keywords
housing
circuit breaker
rear wall
switching contact
connecting bars
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
EP97923817A
Other languages
German (de)
English (en)
Other versions
EP0898779A1 (fr
Inventor
Sezai TÜRKMEN
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
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0898779A1 publication Critical patent/EP0898779A1/fr
Application granted granted Critical
Publication of EP0898779B1 publication Critical patent/EP0898779B1/fr
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
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • H01H2001/5827—Laminated connections, i.e. the flexible conductor is composed of a plurality of thin flexible conducting layers

Definitions

  • the invention relates to a circuit breaker for low voltage with one from a back wall and a front part existing housing and with one arranged in the housing Switch contact system, the two approximately parallel connecting rails for connecting the switch contact system to an external one Circuit, wherein the connecting rails by in the window openings located on the rear wall extend and are fastened in the housing by fastening means and wherein also one of the connecting rails as a carrier stationary switching contact and an arcing horn, while the other of the connecting rails by an articulated Conductor arrangement with a movable switching contact of the Switch contact system is connected.
  • a circuit breaker with the features mentioned is through DE 44 16 105 C1 became known.
  • Back wall of the housing made of insulating material Is a molded part, usually insert nuts or Press-in nuts to provide the nut thread.
  • connection rails For circuit breakers of the type considered here for a high rated current that is between 1000 and 6000 A may lie, the connecting rails have a considerable Cross section on. Accordingly, the connecting rails in the If necessary to provide several cross holes and it is an appropriate number of fasteners required. Therefore, with the installation of the connection rails in a circuit breaker a not inconsiderable effort required to process the connecting rails.
  • the invention has for its object the installation of To simplify connection rails significantly.
  • both connecting rails at least one each transverse to their Have longitudinally extending web and the rear wall of the housing as a stop for each of the webs a counter surface has, such that each of the connecting rails from the the side facing the switching contact system into the associated one Window opening of the rear wall can be inserted until the web for Arrives at the counter surface, and that the fastener to maintain the system of the webs on the associated counter surface in the longitudinal direction of the connecting rail is acting.
  • connection rails are better used electrically, because the previous local reductions in the cross-section through the cross holes.
  • the fasteners on the switch contact system facing Side of the rear wall can be arranged and in the longitudinal direction the connecting rails can be mounted.
  • the invention differs fundamentally from one Circuit breaker according to US 3,287,534 A, the Main current path in addition to inner main conductors detachable with these has connected outer connecting rails.
  • This Connection rails are transverse to their longitudinal direction extending webs, which, however, do not serve the Position the main current path as a whole and in the housing of the Support circuit breaker. Rather, the webs offer that as a square and with mounting holes Flange are formed, the user the opportunity the connecting rail in two against each other by 90 ° to install staggered positions to adapt to the possible different position of the continuing Reaching power rails in a switchgear.
  • This Arrangement requires a separate attachment of the inner Main conductor, which carries a fixed switching contact and an articulated conductor arrangement are on the housing of the circuit breaker.
  • the connecting rails are in turn by additional fasteners with the Main conductors connected.
  • To the assembly of the connection rails to enable in different positions inner main conductor a clamping surface in a window the rear wall of the circuit breaker housing is accessible is.
  • a variable connection technology of the Circuit breaker has therefore been deliberately disregarded to look for solutions for the assembly of the main current path, the fewest possible fasteners and as possible few processing steps of the components of the main current path encouraged.
  • the fastening means can be further within the scope of the invention Take on tasks.
  • one of the fixed Arc horn belonging to the switch contact with the Web of the associated connecting rail aligned holding leg have, the fastening means the holding leg is arranged enforceably.
  • the fastening means can be designed as a screw, being used to receive the screw in the rear wall of the housing a nut thread is arranged.
  • the connecting rail is equally suitable for those with the fixed switching contact or with the articulated conductor arrangement provided connecting rail can be used.
  • the fastener be designed so that it does not require special handling. It can happen that with the articulated ladder assembly provided connecting rail on their the switch contact system facing side has an end face opposite to the Front part of the housing is arranged with a reference dimension and that on the front part of the housing one with the end face interacting stop surface in a reference dimension corresponding position is arranged. That way the relevant connecting rail when joining the Rear wall and the front part of the housing without further Measures set.
  • Front part of the housing has an end part with the articulated conductor arrangement provided connecting rail in such a way detecting nose may be arranged that said connecting rail against a pivoting movement in the associated Window opening of the rear wall of the housing is supported.
  • Figure 1 shows schematically in perspective simplifies a three-pole low-voltage circuit breaker.
  • Figure 2 is a section through the circuit breaker shown in the area of one of the poles according to FIG the basic structure of the circuit breaker illustrate.
  • FIG. 3 A section similar to Figure 2, but on a larger scale shows Figure 3, in particular details of Attachment of connection rails of the circuit breaker are shown.
  • Figure 4 shows a view of a fixed Switch contact provided connecting rail.
  • FIG. 5 shows a perspective section of a for Manufacture of connecting bars serving semi-finished products shown.
  • the low-voltage circuit breaker shown in Figure 1 1 has a housing 2, the three arranged side by side Contains switching contact systems, the switching contact systems 11 correspond to the figure 2.
  • the switch contact systems 11 mentioned are means in Figure 2 shown connecting rails 20 and 21 with Busbars 3 connected.
  • On a control panel 4 of the Circuit breaker 1 are push buttons 5 in the middle for control the on and off and display elements 6 for the Operating state arranged.
  • On the left side of the control panel 4 is an electronic trigger 7 with Control elements for setting a tripping characteristic.
  • On the right side of the control panel 4 is also a Operating handle 10 for tensioning an energy store arranged by hand.
  • the switch contact system 11 already mentioned will now be described with reference to Figure 2 in more detail.
  • a movable contact carrier 14 can accommodate one or more movable switch contacts 13.
  • a drive device 15 has a selector shaft 16 on with the contact carrier 14 by a coupling rod 17th connected is.
  • the switching shaft 16 is for all switching contact systems 11 of the circuit breaker 1 together.
  • the fixed switch contact 12 is with a connecting rail 20 connected. Parallel to the connecting rail 20 extends a lower connecting bar 21 through a movable conductor assembly 22 with the movable switch contact 13 is connected.
  • a movable conductor arrangement in the present case understood all suitable facilities, such as B. foil packages, flexible strands and current-transmitting joints.
  • arc extinguishing chamber 23 Above the switch contact system 11 is an arc extinguishing chamber 23, which in known way to support arc extinguishing is provided.
  • FIG. 3 components of the housing 2 (FIGS 1 and) a rear wall 25 and a partially in section Front part 26 shown.
  • the one indicated in FIG. 2 Drive device 15 is located on the right in FIG. 3 from the front part 26.
  • the rear wall 25 For receiving the connecting rails 20 and 21 is the rear wall 25 with an upper window opening 27 and provided with a lower window opening 28.
  • the lower window opening 28 is at the bottom of a chamber 30, which is formed by a bulge of the rear wall 25 and in a known manner to accommodate a not shown Current transformer is used, the lower connecting bar 21 approximately concentrically encloses.
  • the upper connecting bar 20 is with that already mentioned provided switch contact 11.
  • this assembly has an end face on the connecting rail 20 attached strip-shaped contact pad as the main contact piece 31 (see also FIG. 4). It is also located a burn-off contact 32 above the main contact piece 31, the one burn-off contact carrier 33 and a contact support 34 includes.
  • the burn contact 32 is between the top of the Connection rail 20 and a bend 35 of an arcing horn 36 added to the transfer in a known manner a switching arc into the arc extinguishing chamber 23 ( Figure 2) is used.
  • the parts described above, namely the connecting rail 20 with the main contact piece 31, the burn-off contact 32 and the arcing horn 36 are by common fasteners 37 connected to the rear wall 25 and on this attached.
  • the fasteners 37 provide one Combination of interacting parts, for their mode of operation one at the top of the connecting bar 20 across the longitudinally extending web 40 is essential is.
  • a counter surface 41 serves as a stop for the web 40 on the inside of the rear wall 25.
  • a retaining web 42, the through an end part of the bend 35 of the arcing horn 36 is formed, has the same thickness as the web 40 and lies on this so that both parts are aligned with each other are.
  • a pressure piece 43 with through openings or Openings on the edge for two screws 44 is provided, in Figure 3 by its center lines are indicated.
  • the heads of the screws 44 are indicated.
  • the burn-off contact lies on the pressure piece 43 32 on that also through openings or has open recesses for screws on the edge.
  • the Pressure piece 43 and the burn-off contact carrier 33 can also be used as be uniform body.
  • fastening means 37 in the example according to FIGS Figures 3 and 4 comprise two screws 44 may be obvious with a smaller width of the connecting rail 20 a only screw 44 will be sufficient, while at one larger width corresponding to a higher rated current three or more screws may be appropriate.
  • the connecting rail is first 20 inserted into the window opening 27 of the rear wall 25, until the web 40 on the counter surface 41 to the system is coming. Then the arcing horn 36 with its holding bridge 42 and the burn-off contact 32 and possibly the pressure piece 43 also positioned on the counter surface 41, whereby the Parts are aligned and their through openings or Recesses with the screw holes for the screws 44 swear. Then the screws 44 are inserted and tightened. As a result, the connecting rail, the Arc horn 36 and the burn-off contact 32 with the rear wall 25 firmly connected, although the connecting bar 20 is not the contains previously common cross holes.
  • the pressure piece 43 acts as a bridge contact piece between the bridge 40 and the arcing horn 36.
  • the lower connecting bar 21 is behind with the rear wall 25 the same principle described as in that lower part of Figure 3 is shown. To do this extends the connecting bar 21 through the window opening 28 and lies with a web 46 on a counter surface 47 of the rear wall 25 on.
  • Associated fasteners 50 are similar to those Fastening means 37 a combination of parts or Design features. In particular, this is the Front part 26 of the housing 2 ( Figures 1 and 2) with a Stop surface 51 provided.
  • On the connecting bar 21 is by an end part 52 with a reduced cross section the enlarged end face 53 aligned with the web 46 which abuts the stop surface 51. With the end part 52 the movable conductor arrangement formed from flexible strands 22 ( Figure 2) connected to the current transfer from the Connection rail 21 to the movable switching contact 13 manufactures.
  • the mounting of the connecting bar 21 is carried out in accordance with the above description for the connecting bar 20, d. H. the connecting bar 21 is in the window opening 28th inserted until the web 46 abuts the counter surface 47 the rear wall 25 comes.
  • the final attachment happens by assembling the rear wall 25 and the front part 26 to form the housing 2, the choice of the appropriate Reference dimensions ensure that both the rear wall 25 and the front part and the connecting rail 21 the right one To take position.
  • connecting to the moveable To produce switch contact 13 is the connecting bar 21 longer than the upper connecting bar 20. Also located their support formed by the window opening 28 in a certain distance from the indicated nip 54, while a corresponding clamping point 55 of the upper Connection rail 20 is located close to the window opening. As a result, both connecting rails 20 and 21 compared to those occurring at the clamping points 54 and 55 Forces behave differently. To avoid this is on the front part 26 of the housing 2 a nose 56 such attached that the end portion 52 of the connecting bar 21st additionally in a diagonally opposite web 46 Area is captured and supported. Hereby no pivoting movements of the connecting rail 21 inside the window opening 28.
  • connection rails 20 and 21 can in a semi-finished product with a suitable profile is known from which sections of the required size are divided and through machining with the required design features (Holes, recesses, bevels etc.) can be provided.
  • a profiled semi-finished product is particularly suitable for purposes, which already has the web 40 or 46 ( Figure 3), so that the blanks required for the connecting rails 20 and 21 by dividing the semi-finished product transversely to its longitudinal direction be formed. This is shown in FIG hatched side surface 57 indicated. Further is indicated by a dashed area 58 shown that the semi-finished product for the production of longer connecting rails 21 has a suitable dimension and therefore for the production of the shorter connecting rails 20 a Section must be separated. This section can be lossless be further processed, e.g. B. for the production of smaller Contact parts.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Abstract

L'invention concerne un disjoncteur (1) pour basse tension, qui présente un boîtier (2) comprenant une paroi arrière (25) et une partie avant (26) et dans lequel se trouve un système de contact de commutation de commande (11) avec des rails de raccordement (20, 21). Chacun des rails de raccordement (20, 21) présente une entretoise (40, 46) transversale au sens longitudinal desdits rails de raccordement, destinée à être disposée sur des contre-surfaces (41, 47) de la paroi arrière (25) du boîtier (2). Des éléments de fixation (37, 50) agissent dans le sens longitudinal des rails de raccordement (20, 21).

Claims (8)

  1. Disjoncteur (1) pour basse tension comportant un boítier (2), constitué d'un panneau (25) arrière et d'une partie (26) avant, et comportant un système (11) de contact de commutation qui est monté dans le boítier (2) et qui comporte deux rails (20, 21) de raccordement à peu près parallèles pour relier le système (11) de contact de commutation à un circuit de courant extérieur, les rails (20, 21) de raccordement passant par des ouvertures (27, 28) formant fenêtres ménagées dans le panneau (25) arrière et étant fixés dans le boítier (2) par des moyens (37, 50) de fixation, et, de plus, l'un (20) des rails (20, 21) de raccordement servant de support d'un contact (11) de commutation à poste fixe et d'une corne (36) d'arc électrique, tandis que l'autre (21) des rails (20, 21) de raccordement est en liaison par un dispositif (22) conducteur articulé avec un contact (13) de commutation mobile du système (11) de contact de commutation,
       caractérisé en ce que les deux rails (20, 21) de raccordement comportent au moins chacun une barrette (40, 46) s'étendant perpendiculairement à leur direction longitudinale et le panneau (25) arrière du boítier (2) a comme butée pour chacune des barrettes (40, 46) une surface (41, 47) antagoniste, de telle sorte que chacun des rails (20, 21) de raccordement peut être introduit du côté tourné vers le système (11) de contact de commutation dans les ouvertures (27, 28) associées formant fenêtres du panneau (25) arrière jusqu'à ce que la barrette (40, 46) vienne en contact avec la surface (41, 47) associée, et en ce que le moyen (37, 50) de fixation servant à maintenir le contact des barrettes (40, 46) avec la surface (41, 47) antagoniste associée est réalisé de manière à agir dans la direction longitudinale du rail (20, 21) de raccordement.
  2. Disjoncteur suivant la revendication 1, caractérisé en ce que le moyen (37) de fixation est disposé sur la face du panneau (25) arrière tournée vers le système (11) de contact de commutation et en ce qu'il peut être monté dans la direction longitudinale des rails de raccordement.
  3. Disjoncteur suivant la revendication 2, caractérisé en ce qu'une corne (36) d'arc électrique faisant partie du contact (12) de commutation fixe comporte une branche (42) de maintien en alignement avec la barrette (40) du rail (20) de raccordement associé et en ce que le moyen (37) de fixation est disposé de manière à traverser la barrette (40) et la branche (42) de maintien.
  4. Disjoncteur suivant la revendication 3, caractérisé en ce que le moyen (37) de fixation comprend une vis (44) et en ce qu'un filet (45) femelle est ménagé dans le panneau (25) arrière du boítier (2) pour recevoir la vis (44).
  5. Disjoncteur suivant la revendication 3 ou 4, caractérisé en ce qu'un contact (32) pare-étincelle associé au contact (12) de commutation fixe peut être fixé en même temps par le moyen (37) de fixation.
  6. Disjoncteur suivant la revendication 5, caractérisé en ce que la branche (42) de maintien de la corne (36) d'arc électrique est réalisée en partie d'extrémité d'une pièce (35) coudée servant à la réception du contact (32) pare-étincelle.
  7. Disjoncteur suivant la revendication 1, caractérisé en ce que le rail (21) de raccordement muni du dispositif(22) conducteur articulé comporte sur sa face tournée vers le système (11) de contact de commutation une surface (53) d'extrémité qui est montée en ayant une dimension de référence par rapport à la pièce (26) avant du boítier (2) et en ce qu'une surface (51) de butée coopérant avec la surface (53) d'extrémité est disposée en une position correspondant à la dimension de référence.
  8. Disjoncteur suivant la revendication 7, caractérisé en ce qu'il est disposé sur la partie (26) avant du boítier (2) un bec (56) qui saisit une partie (52) d'extrémité du rail (21) de raccordement muni du dispositif (22) conducteur articulé de telle manière que ledit rail (21) de raccordement est soutenu pour empêcher tout basculement dans l'ouverture (28) associée formant fenêtre du panneau (25) arrière du boítier (2).
EP97923817A 1996-05-13 1997-05-07 Disjoncteur pour basse tension avec rails de raccordement Expired - Lifetime EP0898779B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19620358 1996-05-13
DE19620358 1996-05-13
PCT/DE1997/000976 WO1997043775A1 (fr) 1996-05-13 1997-05-07 Disjoncteur pour basse tension avec rails de raccordement

Publications (2)

Publication Number Publication Date
EP0898779A1 EP0898779A1 (fr) 1999-03-03
EP0898779B1 true EP0898779B1 (fr) 2000-01-19

Family

ID=7794851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97923817A Expired - Lifetime EP0898779B1 (fr) 1996-05-13 1997-05-07 Disjoncteur pour basse tension avec rails de raccordement

Country Status (5)

Country Link
US (1) US6100490A (fr)
EP (1) EP0898779B1 (fr)
JP (1) JP2000510277A (fr)
DE (2) DE19643607A1 (fr)
WO (1) WO1997043775A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20106248U1 (de) * 2001-04-04 2002-08-08 Siemens AG, 80333 München Anschlussschiene für Niederspannungs-Leistungsschalter
US7067758B2 (en) 2002-04-26 2006-06-27 Siemens Aktiengesellschaft Electric power circuit breaker comprising a connecting bar and an arcing horn

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635366A1 (de) * 1996-08-21 1998-02-26 Siemens Ag Bewegbare Kontaktanordnung für einen Niederspannungs-Leistungsschalter mit einem Schwenklager
DE19819165A1 (de) * 1998-04-24 1999-10-28 Siemens Ag Niederspannungs-Leistungsschalter mit einer einschiebbaren Stromschiene
EP1058281B1 (fr) * 1999-05-31 2003-08-13 Siemens Aktiengesellschaft Appareil interrupteur de basse tension avec rails de raccordement et méthode pour indiquer le courant nominal de l'appareil interrupteur
DE19930813A1 (de) * 1999-06-30 2001-01-04 Siemens Ag Leistungsschalter mit Anschlußschienen für verschiedene Nennströme
DE19932010C1 (de) * 1999-07-02 2001-03-08 Siemens Ag Schaltkontaktanordnung eines Niederspannungs-Leistungschalters mit Hauptkontakten, Zwischenkontakten und Abreißkontakten
DE19939710A1 (de) * 1999-08-18 2001-02-22 Siemens Ag Anschlußschienen für elektrische Geräte und Apparate für verschiedene Nennströme
DE10004833A1 (de) * 2000-02-01 2001-08-02 Siemens Ag Mehrpoliger Niederspannungs-Leistungsschalter mit einem Stromerfassungsgerät je Pol
DE10032654A1 (de) * 2000-06-28 2002-01-17 Siemens Ag Anschlussschiene aus profilierten Halbzeugen, für elektrische Geräte und Apparate, für verschiedene Nennströme
DE10032653A1 (de) * 2000-06-28 2002-01-10 Siemens Ag Anschlussschiene für elektrische Geräte und Apparate, für verschiedene Nennströme, mit einem Hohlraum
US6417474B1 (en) * 2001-05-15 2002-07-09 Eaton Corporation Electrical switching apparatus having an arc runner with an elongated raised ridge
DE102006030672B4 (de) 2006-07-04 2008-10-16 Moeller Gmbh Elektrischer Schutzschalter
DE102006030671B4 (de) * 2006-07-04 2008-10-02 Moeller Gmbh Schutzschalter-Kurzschließer-Kombination
DE102007040170A1 (de) * 2007-08-22 2009-02-26 Siemens Ag Vorkontakt für ein elektrisches Schaltgerät sowie ein diesen Vorkontakt aufweisendes elektrisches Schaltgerät und Verfahren zur Montage des Vorkontaktes

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US3287534A (en) * 1963-08-30 1966-11-22 Westinghouse Electric Corp Circuit interrupter structure with improved terminal means
US4277664A (en) * 1979-08-24 1981-07-07 Westinghouse Electric Corp. Circuit breaker structure
DE3432086A1 (de) * 1984-08-28 1986-03-06 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung mit einer die kontaktkraft vergroessernden stromabhaengigen kraft
DE3536112A1 (de) * 1985-10-07 1987-04-09 Siemens Ag Kontaktanordnung fuer niederspannungs-leistungsschalter mit einem biegsamen stromband
DE4333278A1 (de) * 1993-09-24 1995-03-30 Siemens Ag Leistungsschalter mit einer Lichtbogenlöscheinrichtung
DE4416105C1 (de) * 1994-04-19 1995-05-24 Siemens Ag Niederspannungs-Leistungsschalter mit einer Schaltkammer
US5634552A (en) * 1995-06-09 1997-06-03 Eaton Corporation Terminal/blade contact assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20106248U1 (de) * 2001-04-04 2002-08-08 Siemens AG, 80333 München Anschlussschiene für Niederspannungs-Leistungsschalter
US7067758B2 (en) 2002-04-26 2006-06-27 Siemens Aktiengesellschaft Electric power circuit breaker comprising a connecting bar and an arcing horn

Also Published As

Publication number Publication date
DE19643607A1 (de) 1997-11-20
JP2000510277A (ja) 2000-08-08
EP0898779A1 (fr) 1999-03-03
WO1997043775A1 (fr) 1997-11-20
US6100490A (en) 2000-08-08
DE59701045D1 (de) 2000-02-24

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