EP0255008B1 - Disjoncteur de protection de ligne - Google Patents

Disjoncteur de protection de ligne Download PDF

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Publication number
EP0255008B1
EP0255008B1 EP87110454A EP87110454A EP0255008B1 EP 0255008 B1 EP0255008 B1 EP 0255008B1 EP 87110454 A EP87110454 A EP 87110454A EP 87110454 A EP87110454 A EP 87110454A EP 0255008 B1 EP0255008 B1 EP 0255008B1
Authority
EP
European Patent Office
Prior art keywords
arc
guide rail
arc guide
conducting rail
additional
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
EP87110454A
Other languages
German (de)
English (en)
Other versions
EP0255008A1 (fr
Inventor
Erhard Ing. Grad. Runtsch
Werner Bruckner
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.)
ASEA BROWN BOVERI AKTIENGESELLSCHAFT
Original Assignee
ASEA BROWN BOVERI AG
Asea Brown Boveri AG Germany
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 ASEA BROWN BOVERI AG, Asea Brown Boveri AG Germany filed Critical ASEA BROWN BOVERI AG
Priority to AT87110454T priority Critical patent/ATE72362T1/de
Publication of EP0255008A1 publication Critical patent/EP0255008A1/fr
Application granted granted Critical
Publication of EP0255008B1 publication Critical patent/EP0255008B1/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
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • 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
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet

Definitions

  • the invention relates to a circuit breaker according to the preamble of claim 1.
  • a circuit breaker of the type mentioned, in which this problem is essentially solved, has become known from DE-B-28 41 004.
  • a conductor piece is provided parallel to the arc guide rail, but it belongs to an additional blow loop, which is arranged in a large space behind the arc guide rail and separated from it by means of an intermediate insulating piece.
  • This additional blow loop is triangular in shape, the hypotenuse of this triangle being assigned or facing the arc guide rail. The arrangement is such that the blow loop is only flowed through by the current when the arc has arisen during the switch-off process.
  • the object of the invention is to provide a circuit breaker of the type mentioned, in which the required space is reduced even further.
  • FIG. 1 shows an insight into a miniature circuit breaker 10 according to the invention.
  • a base area 12 and an upper housing part 13 are distinguished.
  • the base there are two on the left and right Terminals 14 and 15, the left terminal 14 being connected to an arc guide rail 16 and via a strand 14a to a contact lever 19 rotatably supported on an axis 18.
  • a movable contact piece 20, which cooperates with a fixed contact piece 21, is formed on it.
  • the switch can be switched on or off by means of a manual control knob 25. turned off.
  • thermobimetal 17 connects to the right connecting terminal 15 via a flexible conductor 50, one end of which is attached to an extension 51 of the yoke (without reference number) of the electromagnetic drive 23 - at this end the conductor 50 also connects - and the other , free, bendable end is connected via a further flexible conductor 52 to one end of the winding (without reference number) of the electromagnetic drive 23.
  • the arc guide rail 16 is approximately arc-shaped and delimits the arc quenching plate packet 22 on the bottom side of the switch with a sheet 26 and the fixed contact piece 21 is connected to a guide rail 27, whereby the arc extinguishing sheet packet 22 through the sheet 26, which is connected to the arc guide bar 16 , and the guide plate 27 is limited on both sides.
  • the part - designated X - is provided which effects an additional drive of the arc.
  • a flag 30 (see also Figure 2), which cooperates with the terminal 14 and is connected to this.
  • This web 30 is an approximated rectangular part, at the upper end of which - forming a U-shape therewith - a conductor section 31 is formed, a U-web 32 being located between the conductor section 31 and the web 30.
  • the conductor section 31 runs a certain distance parallel to the partial area 33 of the arc guide rail 16.
  • a connecting lug 34 is provided, to which - as can be seen from FIG.
  • an extension 14b of the left terminal 14 is connected.
  • At the conductor section 31 runs perpendicular to it, but in its plane and thereby at the end of the conductor section 31 opposite the U-web 32 to a lower crosspiece 35, to which a parallel conductor section 36 connects, which has an upper crosspiece bent in its plane 37 is connected to the guide rail 16.
  • the upper crosspiece 37 runs parallel to the lower crosspiece 35 and forms a rectangle with the partial area 33 and the parallel conductor piece 26 when viewed from the right front.
  • a closed rectangle is formed overall in the projection onto the level of the area 33, which extends practically laterally in its plane to the arc guide rail or to the partial area 33 and not in the plane that is spanned by the direction of movement of the movable contact piece.
  • the fixed contact piece 21 interacts with the movable contact piece 20, between which an arc is drawn in the event of a switch-off action.
  • the electrical line connection between the two terminals 14 and 15 takes place via the flexible strand 14a, the movable contact piece 20, the fixed contact piece 21, the electromagnetic drive 23 and the thermobimetal 17.
  • the area shown in FIG. 1 is "X" with the contact point 41 closed switched out of the current path.
  • the contact point 41 now opens and the movable contact or the movable contact piece 20 swings over to the arc guide rail in the direction of arrow A, then the arc jumps with its one base point in the region 33 onto the arc guide rail 16; This results in the following current path:
  • the current flows in the direction of the arrow P 1 initially from above, via the web 34 to the conductor section 31 and from here down, via the cross bar 35, the section 36 upwards and the upper cross bar 37 , also along the arrow direction P1, to the arc guide 16. It can be seen that the current flowing through the conductor section 31 flows in parallel and in the same direction as the current flowing through the arc guide 16.
  • a driving force is exerted on the arc base point burning on the area 33 causes, in addition to the driving force generated by the U-shaped blowing loop between the fixed and the movable contact piece, so that the arc base is accelerated particularly well in the area 33.
  • the assignment of the conductor section 31 to the arc guide rail or to the terminal web 30 is such that the distance from the terminal web 30 to the arc guide rail is approximately 5 to 6 mm, depending on the thickness of the individual sheet metal parts and on the required distance between the terminal web 30, the conductor piece 31 and the area 33 of the arc guide rail 16.
  • the cross piece 37 contributes practically nothing to the space requirement in the direction of the connection plane between the two terminals 14 and 15, so that the space which is already very scarce in the interior of a circuit breaker is also not particularly large and is additionally constricted, as is the case, for example, with the switch according to DE-AS 28 41 004.

Landscapes

  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (2)

  1. Disjoncteur de puissance comportant un système de contacts (41), composé d'un contact mobile et d'un contact fixe (20. 21), formant une boucle de soufflage en forme de U, et une chambre d'arc électrique avec un paquet de tôles d'extinction d'arc (22), qui présente des tôles d'extinction parallèles, sensiblement perpendiculaires à la boucle de soufflage en U, un rail de guidage d'arc (16, 33), qui amène au paquet de tôles d'extinction (22) l'arc électrique qui se forme lors d'une action de coupure, et un rail de guidage supplémentaire (31) disposé derrière le rail de guidage d'arc (16, 33) et parallèlement à celui-ci, au moins dans la région (33) du rail de guidage d'arc (16, 33), dans laquelle se trouve le contact mobile (20) en position de coupure, qui n'est couplé au circuit qu'au moment de l'apparition d'un arc électrique et de son déplacement sur le rail de guidage d'arc (16, 33), caractérisé en ce que le rail de guidage (16, 33) et le rail de guidage supplémentaire (31) sont reliés entre eux par une ligne de liaison (35, 36, 37) de forme rectangulaire, disposée essentiellement sur le côté du rail de guidage d'arc et située essentiellement dans la région de la position de coupure du contact mobile..
  2. Disjoncteur de puissance selon la revendication 1, caractérisé en ce que la ligne de liaison (35, 36, 37) se raccorde latéralement au rail de guidage d'arc (16, 33) et se prolonge derrière celui-ci, et forme en plan, c'est-à-dire en projection sur la surface du rail de guidage d'arc, un rectangle.
EP87110454A 1986-07-28 1987-07-18 Disjoncteur de protection de ligne Expired - Lifetime EP0255008B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87110454T ATE72362T1 (de) 1986-07-28 1987-07-18 Leitungsschutzschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863625425 DE3625425A1 (de) 1986-07-28 1986-07-28 Leitungsschutzschalter
DE3625425 1986-07-28

Publications (2)

Publication Number Publication Date
EP0255008A1 EP0255008A1 (fr) 1988-02-03
EP0255008B1 true EP0255008B1 (fr) 1992-01-29

Family

ID=6306107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87110454A Expired - Lifetime EP0255008B1 (fr) 1986-07-28 1987-07-18 Disjoncteur de protection de ligne

Country Status (3)

Country Link
EP (1) EP0255008B1 (fr)
AT (1) ATE72362T1 (fr)
DE (2) DE3625425A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823790A1 (de) * 1988-07-14 1990-01-18 Asea Brown Boveri Elektrisches installationsgeraet mit kontakttrennwand
DE4315485A1 (de) * 1993-05-10 1994-11-17 Abb Patent Gmbh Elektrischer Schalter
EP0649155B1 (fr) * 1993-10-15 1997-04-02 Hager Electro S.A. TÔle de conduction double pour chambre de conduction d'arc de disjoncteur
EP1548772A1 (fr) * 2003-12-22 2005-06-29 ABB Schweiz Holding AG Chambre de soufflage pour un disjoncteur-protecteur possèdant une double coupure
DE102008015196B4 (de) * 2008-03-20 2009-11-19 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung für ein Schaltgerät, Schaltgerät mit Lichtbogen-Löschvorrichtung sowie Verfahren zum Herstellen einer Lichtbogen -Löschvorrichtung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2200108A (en) * 1938-08-10 1940-05-07 Heinemann Circuit Breaker Comp Blow-out mechanism
DE1665684A1 (de) * 1966-07-21 1971-03-25 Siemens Ag Elektrischer Schalter,insbesondere Leitungsschutzschalter
DE2349187C3 (de) * 1973-10-01 1980-07-17 Siemens Ag, 1000 Berlin Und 8000 Muenchen Vorrichtung zur Unterbrechung von Stromkreisen
DE2526827A1 (de) * 1975-06-16 1976-12-30 Siemens Ag Kontaktanordnung zur unterbrechung von stromkreisen
DE2841004C2 (de) * 1978-09-21 1980-10-02 Licentia Gmbh Leitungsschutzschalter mit zusätzlicher Blasschleife
DE2848589A1 (de) * 1978-11-09 1980-05-22 Licentia Gmbh Leitungsschutzschalter mit einer eine blasschleife bildenden kontaktanordnung
FR2549638B1 (fr) * 1983-07-18 1988-11-18 Etude Realisa Disjoncteurs Sa Disjoncteur avec dispositif d'acceleration de deplacement d'arc
DE3442537A1 (de) * 1984-11-22 1986-05-22 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Verfahren zum blasenfreien verbinden eines grossflaechigen halbleiter-bauelements mit einem als substrat dienenden bauteil mittels loeten
DE3501314A1 (de) * 1985-01-16 1986-07-17 Siemens AG, 1000 Berlin und 8000 München Mehrpoliger leitungsschutzschalter

Also Published As

Publication number Publication date
EP0255008A1 (fr) 1988-02-03
DE3776449D1 (de) 1992-03-12
DE3625425A1 (de) 1988-02-04
ATE72362T1 (de) 1992-02-15

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