EP0898779A1 - Disjoncteur pour basse tension avec rails de raccordement - Google Patents

Disjoncteur pour basse tension avec rails de raccordement

Info

Publication number
EP0898779A1
EP0898779A1 EP97923817A EP97923817A EP0898779A1 EP 0898779 A1 EP0898779 A1 EP 0898779A1 EP 97923817 A EP97923817 A EP 97923817A EP 97923817 A EP97923817 A EP 97923817A EP 0898779 A1 EP0898779 A1 EP 0898779A1
Authority
EP
European Patent Office
Prior art keywords
housing
circuit breaker
rear wall
fastening means
switching contact
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.)
Granted
Application number
EP97923817A
Other languages
German (de)
English (en)
Other versions
EP0898779B1 (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

Links

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 a housing consisting of a rear wall and a front part and with a switching contact system arranged in the housing, which has two approximately parallel connecting rails for connecting the switching contact system to an external circuit, the connecting rails being in the Window openings located on the rear wall extend and are fastened in the housing by fastening means, and furthermore one of the connecting rails serves as a carrier for a fixed switching contact and an arcing horn, while the other of the connecting rails is connected to a movable switching contact of the switching contact system by an articulated conductor arrangement.
  • a circuit breaker with the features mentioned is known from DE 44 16 105 Cl. Screws which extend through openings made transversely to the longitudinal axis of the connecting rails and which are provided with a corresponding nut thread in the rear wall of the housing are used as fastening means for the connecting rails in this circuit breaker. In view of the fact that the rear wall of the housing is a molded part made of insulating material, insert nuts or press-in nuts are generally used to provide the nut thread. B at circuit breakers of the type considered here for a high rated current, which can be between 1000 and 6000 A, the connection rails have a considerable
  • connection rails are to be provided with several cross holes if necessary and a corresponding number of fasteners is required. Therefore, with the installation of the connection rails in a circuit breaker, a not inconsiderable effort for processing the connection rails is required.
  • the invention has for its object the installation of
  • both connecting rails each have at least one web extending transversely to their longitudinal direction and the rear wall of the housing has a counter surface as a stop for each of the webs, such that each of the connecting rails is connected to the switching contact system facing side can be inserted into the associated window opening of the rear wall until the web comes to rest on the counter surface and that the fastening means for maintaining the web resting against the associated counter surface is designed to act in the longitudinal direction of the connecting rail.
  • the web provided according to the invention enables a flat support of the connecting rails on the rear wall of the housing. Therefore, the previously required transverse bores in the connecting rails are unnecessary. Apart from the labor savings associated with this, the cross-section of the connecting rails is also better utilized electrically, since the previous local reductions in the cross section through the cross holes are eliminated. Since the forces acting on the connecting rails predominantly originate from the switch contact system and therefore act in the direction of the rear wall of the housing, only moderate demands are placed on the fastening means.
  • the fastening means can be arranged on the side of the rear wall facing the switching contact system and can be mountable in the longitudinal direction of the connecting rails.
  • a burn-off contact assigned to the fixed switching contact can be fastened at the same time by the fastening means.
  • the holding limb of the arcing horn can be designed as an end part of an angled portion that serves to receive the burning contact.
  • connection rail provided with the movable conductor arrangement can be designed such that it does not require any special handling.
  • connection rail provided with the articulated conductor arrangement has on its side facing the switching contact system an end face which is arranged with respect to the front part of the housing and that on the front part of the housing a cooperating with the end face in a stop surface Reference dimension corresponding position is arranged.
  • an end part of the connecting rail provided with the articulated conductor arrangement can be arranged on the front part of the housing be that the mentioned connection rail is supported against a pivoting movement in the associated window opening in the rear wall of the housing.
  • FIG. 1 shows a three-pole low-voltage circuit breaker schematically simplified in a perspective representation.
  • FIG. 2 shows a section through the circuit breaker according to FIG. 1 in the area of one of the poles in order to illustrate the basic structure of the circuit breaker.
  • FIG. 3 A section similar to FIG. 2, but on a larger scale, is shown in FIG. 3, with details of the attachment of connecting rails of the circuit breaker being shown in particular.
  • FIG. 4 shows a view of a connecting rail provided with a fixed switching contact.
  • FIG. 5 shows in perspective a section of a semi-finished product used for the production of connecting rails.
  • the low-voltage circuit breaker 1 shown in FIG. 1 has a housing 2 which contains three switch contact systems arranged next to one another, which correspond to the switch contact systems 11 according to FIG. 2.
  • the switch contact systems 11 mentioned are connected to busbars 3 by means of connecting rails 20 and 21 shown in FIG.
  • control panel 4 On the left side of the control panel 4 there 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
  • the switch contact system 11 includes a fixed switch contact 12 and a movable switch contact 13.
  • a movable contact carrier 14 can receive one or more movable switch contacts 13.
  • a drive device 15 has a switching shaft 16 which is connected to the contact carrier 14 by a coupling rod 17.
  • the switching shaft 16 is common to all switch contact systems 11 of the circuit breaker 1.
  • the fixed switch contact 12 is connected to a connecting bar 20.
  • a lower connecting rail 21 extends parallel to the connecting rail 20 and is connected to the movable switching contact 13 by a movable conductor arrangement 22.
  • all suitable devices are understood to be a movable conductor arrangement, such as, for. B. foil packages, flexible strands and current-transmitting joints.
  • the lower window opening 28 is located at the bottom of a chamber 30 which is formed by a bulge in the rear wall 25 and which is used in a known manner to accommodate a current transformer (not shown) which surrounds the lower connecting bar 21 approximately concentrically.
  • the upper connecting bar 20 is provided with the fixed switching contact 11 already mentioned.
  • This assembly includes a strip-shaped contact pad attached to the end face of the connecting rail 20 as the main contact piece 31 (cf. also FIG. 4).
  • the burn-off contact 32 is received between the top of the connecting bar 20 and a bend 35 of an arcing horn 36, which is used in a known manner to transfer a switching arc into the arcing chamber 23 (FIG. 2).
  • the parts described above, namely the connecting bar 20 with the main contact piece 31, the burn-off contact 32 and the arcing horn 36 are Fixing means 37 connected to the rear wall 25 and attached to this.
  • the fastening means 37 represent a combination of interacting parts, for the operation of which a web 40 arranged on the upper side of the connecting rail 20 and transverse to its longitudinal axis is essential.
  • a counter surface 41 on the inside of the rear wall 25 serves as a stop for the web 40.
  • a holding web 42, which is formed by an end part of the bend 35 of the arcing horn 36, has the same thickness as the web 40 and lies thereon that both parts are aligned against each other.
  • a pressure piece 43 which is provided with through openings or recesses open at the edge for two screws 44, which are indicated in FIG. 3 by their center lines. The heads of the screws 44 are visible in FIG. Nuts or threaded pieces inserted into pockets in the rear wall 25 are provided as the nut thread 45 for the screws 44.
  • the burn-off contact 32 rests on the pressure piece 43 and likewise has through openings or recesses for screws that are open at the edge.
  • the pressure piece 43 and the burn-off contact carrier 33 can also be designed as a single body.
  • the connecting bar, the arcing horn 36 and the burn-off contact 32 are firmly connected to the rear wall 25, although the connecting bar 20 does not contain the cross bores which have been customary to date. This does not prevent a good current transition from the connecting bar 20 to the burn-off contact 32 and the arcing horn 36 because these parts are in extensive contact with the web 40.
  • the pressure piece 43 (or in the case of one-piece manufacture of the burn-off contact carrier 33) acts as a bridge contact piece between the web 40 and the arcing horn 36.
  • the lower connecting rail 21 is connected to the rear wall 25 according to the same principle described, as shown in the lower part of Figure 3.
  • the connecting rail 21 extends through the window opening 28 and rests with a web 46 on a counter surface 47 of the rear wall 25.
  • Associated fastening means 50 similar to fastening means 37, represent a combination of parts or design features.
  • front part 26 of housing 2 (FIGS. 1 and 2) is provided with one A ntsch phenomenon 51 provided.
  • On the connecting bar 21 is formed by an end portion 52 with a reduced cross section an aligned with the web 46 enlarged end surface 53 against which the stop surface 51 abuts.
  • With the end part 52 is the movable conductor arrangement formed from flexible strands
  • Connecting rail 21 to the movable switch contact 13 produces.
  • the mounting of the connecting bar 21 is carried out according to the above description for the connecting bar 20, d. H. the connecting rail 21 is inserted into the window opening 28 until the web 46 comes to rest against the counter surface 47 of the rear wall 25.
  • the final attachment is done by assembling the rear wall 25 and the front part 26 and the formation of the housing 2, whereby it is ensured by a suitable choice of the reference dimensions that both the rear wall 25 and the front part and the connecting rail 21 assume the correct position.
  • the connecting bar 21 is longer than the upper connecting bar 20. Also, its support formed by the window opening 28 is at a certain distance from the indicated clamping point 54, while a corresponding clamping point 55 upper connecting rail 20 is located close to the window opening. As a result, both connecting rails 20 and 21 can behave differently with respect to the forces occurring at the clamping points 54 and 55. To avoid this is a nose 56 is attached to the front part 26 of the housing 2 in such a way that the end part 52 of the connecting bar 21 is additionally gripped and supported in an area approximately diagonally opposite the web 46. This prevents pivoting movements of the connecting rail 21 within the window opening 28.
  • a semi-finished product with a suitable profile can be used to produce the connecting rails 20 and 21, from which sections of the required size are divided and provided with the necessary design features (bores, recesses, bevels, etc.) by machining.
  • a profiled semifinished product which already has the web 40 or 46 (FIG. 3) is particularly suitable for the purposes described above, so that the blanks required for the connecting rails 20 and 21 are formed by dividing the semifinished product transversely to its longitudinal direction. This is indicated in Figure 5 by a hatched side surface 57.
  • a region 58 indicated by dash-dotted lines shows that the semifinished product has a dimension suitable for producing the longer connecting rails 21 and therefore a section must be severed for producing the shorter connecting rails 20. This section can be processed without loss, e.g. B. for the production of smaller contact parts.

Landscapes

  • 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).
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 true EP0898779A1 (fr) 1999-03-03
EP0898779B1 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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1058281A2 (fr) * 1999-05-31 2000-12-06 Siemens Aktiengesellschaft Appareil interrupteur de basse tension avec rails de raccordement et méthode pour indiquer le courant nominal de l'appareil interrupteur

Families Citing this family (14)

* 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
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
DE20106248U1 (de) * 2001-04-04 2002-08-08 Siemens AG, 80333 München Anschlussschiene für Niederspannungs-Leistungsschalter
US6417474B1 (en) * 2001-05-15 2002-07-09 Eaton Corporation Electrical switching apparatus having an arc runner with an elongated raised ridge
DE10219558B4 (de) * 2002-04-26 2004-08-26 Siemens Ag Elektrischer Leistungsschalter mit einer Anschlussschiene und einem Lichtbogenhorn
DE102006030671B4 (de) * 2006-07-04 2008-10-02 Moeller Gmbh Schutzschalter-Kurzschließer-Kombination
DE102006030672B4 (de) 2006-07-04 2008-10-16 Moeller Gmbh Elektrischer Schutzschalter
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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Publication number Priority date Publication date Assignee Title
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9743775A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1058281A2 (fr) * 1999-05-31 2000-12-06 Siemens Aktiengesellschaft Appareil interrupteur de basse tension avec rails de raccordement et méthode pour indiquer le courant nominal de l'appareil interrupteur
EP1058281A3 (fr) * 1999-05-31 2002-04-24 Siemens Aktiengesellschaft Appareil interrupteur de basse tension avec rails de raccordement et méthode pour indiquer le courant nominal de l'appareil interrupteur

Also Published As

Publication number Publication date
EP0898779B1 (fr) 2000-01-19
US6100490A (en) 2000-08-08
DE59701045D1 (de) 2000-02-24
DE19643607A1 (de) 1997-11-20
WO1997043775A1 (fr) 1997-11-20
JP2000510277A (ja) 2000-08-08

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