EP0223732A1 - Disjoncteur multipolaire de puissance basse tension avec barres de courant - Google Patents

Disjoncteur multipolaire de puissance basse tension avec barres de courant Download PDF

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Publication number
EP0223732A1
EP0223732A1 EP86730159A EP86730159A EP0223732A1 EP 0223732 A1 EP0223732 A1 EP 0223732A1 EP 86730159 A EP86730159 A EP 86730159A EP 86730159 A EP86730159 A EP 86730159A EP 0223732 A1 EP0223732 A1 EP 0223732A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
support body
busbars
housing
breaker according
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
EP86730159A
Other languages
German (de)
English (en)
Other versions
EP0223732B1 (fr
Inventor
Günter Dipl.-Ing. Prietzel
Georg Sprenger
Reinhard Dipl.-Ing. Kugler
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of EP0223732A1 publication Critical patent/EP0223732A1/fr
Application granted granted Critical
Publication of EP0223732B1 publication Critical patent/EP0223732B1/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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections

Definitions

  • the invention relates to a multi-pole low-voltage circuit breaker with busbars for connecting contact arrangements of the circuit breaker to one or more circuits, the busbars for the input side and the busbars for the output side in one row and both rows parallel to one another and at right angles to side walls of the circuit breaker are arranged.
  • a circuit breaker of this type has become known, for example, from EP-A-0 071 385.
  • each terminal point is located on a conductor piece that extends horizontally to the rear with respect to the normal position of use of the circuit breaker. Stiffening elements ensure that the conductor rails cannot be deformed by current forces.
  • the circuit breaker is suitable, for example, for an extendable arrangement in which suitable transition pieces or parts of a disconnect contact arrangement are attached to the conductor rails.
  • connection rails are required which are inserted between the terminal points of the contact arrangement of the circuit breaker and the stationary busbars.
  • the connecting rails it is not difficult to connect the connecting rails to the terminal points of the contact arrangement before the circuit breaker is installed in the switchgear; should however even the connection to the fixed busbars in the case of a non-aligned arrangement is possible without difficulty, the length of the connecting bars must not be less than that in order to ensure good accessibility, in particular from the front of the circuit breaker. Due to the relative length of the connecting rails, the problem arises that the connecting rails are subjected to deforming forces in the event of a short circuit, which may damage not only the connecting rails themselves but also the clamping points and connecting elements.
  • connection rails As such, it would be possible to avoid such harmful deformations by designing the connecting rails as an integral part of the circuit breaker and accordingly, with the exception of an open end provided for connection to a fixed current rail, which is completely fixed.
  • a circuit breaker would not be suitable for use as a retractable circuit breaker.
  • embedding the connection rails would undesirably hinder heat dissipation.
  • a dimensioning of the connection rails with a larger than the cross section required from the electrical point of view would increase the strength in the desired manner, but at the same time would considerably increase the weight and the cost of the connection arrangement.
  • the object of the invention is to protect exposed, normally dimensioned connecting rails with simple means without impairing the cooling from the effects of current forces.
  • This object is achieved according to the invention in that serving to connect the busbars with stationary conductors which are not aligned with the busbars, for example Connection rails arranged parallel to the rear of the circuit breaker for the input side and the output side are each covered by a common insulating support body, the ends of which are fastened to the side walls of the circuit breaker.
  • a three-pole circuit breaker requires only two support bodies, one of which detects the connecting rails leading to the feed side of the contact arrangement, while the other supporting body is assigned to the dissipating connecting rails. Nevertheless, it has been shown that the very considerable forces occurring in the event of a short circuit can be reliably absorbed and damage avoided.
  • the locally provided support and the distance remaining between the connecting rail and the housing of the circuit breaker also ensure good heat dissipation.
  • the support body can be positively connected to the housing of the circuit breaker, and the direction of the force transmission of the positive connection can be selected in accordance with the predominantly occurring direction of current forces. This allows the support body to be easily attached to the connecting rail without the aid of fasteners to be handled separately and with good support.
  • the positive connection between the support body and the housing of the circuit breaker can be achieved by latching lugs which can be latched into recesses in the housing walls of the circuit breaker with elastic deformation of the support body.
  • the support body can thus be formed in one piece and by simple processing steps from a suitable, for. B. plate-shaped material.
  • the recesses in the housing walls of the circuit breaker can be dimensioned to accommodate the latching lugs of at least two support bodies. It is then possible to For circuit breakers that are sized for different short-circuit currents with the same size, depending on the requirements, use one support body or two or more support bodies in a parallel arrangement. The support bodies can thus be used as a unit part for a row of switches.
  • support bodies designed as shaped bodies with an approximately H-shaped cross section, in which the legs of the "H" are arranged parallel to the connecting rails.
  • Such a molded body which can be produced, for example, in a known manner from a thermosetting plastic by injection molding, is distinguished both by high strength with little deformation and by favorable dielectric behavior.
  • Such a shaped body can be fastened by means of screws which penetrate the side walls of the circuit breaker and which engage in the end faces of the shaped body.
  • a stop surface can be provided on the end faces of the support body, which is intended to rest on the end face of the associated side wall of the circuit breaker.
  • the low-voltage circuit breaker 1 shown in FIG. 1 has contact arrangements 3 arranged parallel to one another on an insulating block 2, corresponding to the number of poles. These contact arrangements each consist of a fixed part 4 and a movable part 5, the interacting contact piece supports of which are designated 6 and 7. Furthermore, the fixed part 4 has an arcing horn 10 and the movable part 5 has an arcing horn 11.
  • the contact arrangement 3 of each pole is assigned an arcing quenching chamber 12 which is provided with quenching plates in a known manner.
  • a drive device, a switch lock and, if necessary, a motor drive are housed below and to the right of the contact arrangement 3 within the housing 19 of the circuit breaker 1. These parts are not shown in detail and correspond to a suitable design.
  • the contact arrangements 3 are equipped with upper clamping points 15 and lower clamping points 16 attached to the insulating block 2. Both clamping points are attached to the insulating block 2, these clamping points being located on conductor pieces which are in relation to one another Control panel 13 of the circuit breaker 1 extend on the back in the horizontal direction.
  • terminal points 15 and 16 angled connecting rails 17 and 18 are connected, which extend upwards and downwards and are arranged at a distance from the rear of the circuit breaker 1.
  • the length of the connecting rails 17 and 18, as clearly shown in FIG. 1, is dimensioned such that the connecting bores 20 and 21 indicated near the ends of the connecting rails 17 and 18 are accessible from the front of the circuit breaker 1.
  • upper stationary busbars 30 are connected to the connecting rails 17 and lower stationary busbars 31 are connected to the connecting rails 18.
  • the circuit breaker 1 is partially shown from the rear with a view of the upper connecting rails 17, the associated stationary busbars being omitted in order to show the fastening bores 20.
  • a total of four identical support bodies 22 are arranged parallel to one another in order to support the connecting rails 17 in the desired manner.
  • two parallel support bodies are provided in the example according to FIG. 1. The appropriate number of support bodies depends on the level of the expected current forces.
  • support rails 22 assigned to the connecting rails 17 and 18 are used, which are of completely identical design. Details of the support body 22 are shown in Figures 3 and 4. As these figures show, the support bodies 22 are narrow and relatively thin parts which are dimensioned according to the width of the switch and are made of a suitable insulating material and are provided with through openings 24 corresponding to the number of poles of the circuit breaker 1. For the three connecting rails 17 and 18, that of the upper clamping points 15 and the lower clamping points 16 of the contact arrangements 3, two of the support bodies 22 shown in FIGS.
  • the support bodies 22 have lateral latching lugs 25, for their reception in the side housing walls 26 of the circuit breaker 1 suitable cutouts 27 and 28 are provided. These recesses can be made wider than the thickness of one of the support bodies 22, so that, as already mentioned, two support bodies or a larger number can be attached if necessary. In this way, the support body 22 and the side housing walls 26 can be used in a row of switches dimensioned for different currents.
  • Plate-shaped insulating materials for example hard tissue or other carrier materials impregnated with a plastic, are suitable as the material for producing the support bodies 22.
  • the connecting rails 17 and 18 extend parallel to the rear of the circuit breaker 1 upwards or downwards. In certain cases, however, it may be appropriate to arrange the connecting rails at a slight angle to this direction.
  • the described support bodies can be used in the same way if recesses 27 and 28 are provided on the housing walls 26 or other parts of the housing 19 of the circuit breaker 1 in such a position that the support bodies 22 are fitted in a position adapted to the direction of the connecting rails to let.
  • the bend required to snap the support bodies 22 into the recesses 27 and 28 can be achieved by elastic deformation without undue stress due to the aspect ratio shown in FIG. 3. If, however, another ratio should be more suitable, ie if the length deviates from the example shown and is not a multiple of the height, it may be expedient to design the locking lugs as deformable lugs.
  • the support body 35 according to FIGS. 5, 6 and 7 is designed as a molded part and is intended for use as an individual part.
  • the support body 35 has an approximately H-shaped cross section, as shown in FIG. 7, which represents section VII-VII in FIG.
  • the H-legs 36 are connected by transverse webs 40.
  • a stop surface 41 is formed on each of the end faces by a shoulder, which is intended to rest against the rear end face of the associated side wall of the circuit breaker.
  • a threaded opening 42 is used for fastening, which can be formed by a threaded bush anchored in the material of the supporting body and which allows the supporting body to be screwed tightly to the side walls 26 and 29.

Landscapes

  • Breakers (AREA)
EP86730159A 1985-11-06 1986-10-16 Disjoncteur multipolaire de puissance basse tension avec barres de courant Expired - Lifetime EP0223732B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3539672 1985-11-06
DE19853539672 DE3539672A1 (de) 1985-11-06 1985-11-06 Niederspannungs-leistungsschalter mit einer kontaktanordnung und klemmstellen

Publications (2)

Publication Number Publication Date
EP0223732A1 true EP0223732A1 (fr) 1987-05-27
EP0223732B1 EP0223732B1 (fr) 1991-02-27

Family

ID=6285498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86730159A Expired - Lifetime EP0223732B1 (fr) 1985-11-06 1986-10-16 Disjoncteur multipolaire de puissance basse tension avec barres de courant

Country Status (4)

Country Link
US (1) US4802059A (fr)
EP (1) EP0223732B1 (fr)
DE (2) DE3539672A1 (fr)
IN (1) IN163748B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2835171A1 (fr) 2013-08-08 2015-02-11 Technical University of Denmark Procédé et système pour la purification de gaz d'échappement avec une cellule électrochimique

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5240689A (en) * 1989-06-19 1993-08-31 Noell, Inc. Process using two-stage boiler injection for reduction of nitrogen
FR2802332B1 (fr) * 1999-12-13 2004-04-23 Labinal Contacteur de puissance et dispositif de distribution de puissance electrique le comportant
DE10032654A1 (de) * 2000-06-28 2002-01-17 Siemens Ag Anschlussschiene aus profilierten Halbzeugen, für elektrische Geräte und Apparate, für verschiedene Nennströme
DE20106248U1 (de) * 2001-04-04 2002-08-08 Siemens AG, 80333 München Anschlussschiene für Niederspannungs-Leistungsschalter
CN103446806B (zh) * 2013-09-13 2015-06-10 西北有色金属研究院 一种具有非对称结构的多孔材料的制备方法
US9876334B2 (en) 2014-01-03 2018-01-23 Electronic Theatre Controls, Inc. Breaker assembly with mating platform and well connection
US11245259B2 (en) * 2018-08-30 2022-02-08 Delta Electronics, Inc. Power supply system
CN113284776B (zh) * 2021-05-18 2023-07-25 常州市耕耘电器有限公司 一种便于装配的断路器触头系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2862995A (en) * 1953-05-11 1958-12-02 Frank Adam Electric Co Mounting back for electrical switching devices
US4277664A (en) * 1979-08-24 1981-07-07 Westinghouse Electric Corp. Circuit breaker structure
DE3223468A1 (de) * 1981-06-24 1983-01-20 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa Stromleiterhaltevorrichtung und isolierteil
EP0071385A2 (fr) * 1981-07-17 1983-02-09 Mitsubishi Denki Kabushiki Kaisha Assemblage de bornes de connexion pour disjoncteur

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293503A (en) * 1964-06-05 1966-12-20 Ite Circuit Breaker Ltd Panelboard assembly with side mounted support means and line terminals accessible from rear
US3288956A (en) * 1965-03-01 1966-11-29 Gen Electric Draw-out switch-gear interlock apparatus
US3769553A (en) * 1972-11-01 1973-10-30 Westinghouse Electric Corp Panelboard with insulative snap-in support means
DE2646123C2 (de) * 1976-10-13 1985-03-07 Brown, Boveri & Cie Ag, 6800 Mannheim Tragplatte zur Halterung von elektrischen Installationsgeräten

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2862995A (en) * 1953-05-11 1958-12-02 Frank Adam Electric Co Mounting back for electrical switching devices
US4277664A (en) * 1979-08-24 1981-07-07 Westinghouse Electric Corp. Circuit breaker structure
DE3223468A1 (de) * 1981-06-24 1983-01-20 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa Stromleiterhaltevorrichtung und isolierteil
EP0071385A2 (fr) * 1981-07-17 1983-02-09 Mitsubishi Denki Kabushiki Kaisha Assemblage de bornes de connexion pour disjoncteur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2835171A1 (fr) 2013-08-08 2015-02-11 Technical University of Denmark Procédé et système pour la purification de gaz d'échappement avec une cellule électrochimique

Also Published As

Publication number Publication date
DE3539672A1 (de) 1987-05-07
DE3677715D1 (de) 1991-04-04
US4802059A (en) 1989-01-31
IN163748B (fr) 1988-11-05
EP0223732B1 (fr) 1991-02-27

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