EP0807313A1 - Disjoncteur de protection de ligne - Google Patents

Disjoncteur de protection de ligne

Info

Publication number
EP0807313A1
EP0807313A1 EP96901231A EP96901231A EP0807313A1 EP 0807313 A1 EP0807313 A1 EP 0807313A1 EP 96901231 A EP96901231 A EP 96901231A EP 96901231 A EP96901231 A EP 96901231A EP 0807313 A1 EP0807313 A1 EP 0807313A1
Authority
EP
European Patent Office
Prior art keywords
contact
pole
lever
conductor pole
circuit breaker
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
EP96901231A
Other languages
German (de)
English (en)
Other versions
EP0807313B1 (fr
Inventor
Torsten Schlegel
Jürgen Feuerhake
Ralf Schwager
Helmut Heindorf
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.)
AEG Niederspannungstechnik GmbH and Co KG
Original Assignee
AEG Niederspannungstechnik GmbH and Co KG
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 AEG Niederspannungstechnik GmbH and Co KG filed Critical AEG Niederspannungstechnik GmbH and Co KG
Publication of EP0807313A1 publication Critical patent/EP0807313A1/fr
Application granted granted Critical
Publication of EP0807313B1 publication Critical patent/EP0807313B1/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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor

Definitions

  • the invention relates to a circuit breaker with a thermally and magnetically protected outer conductor pole and an unprotected neutral conductor pole according to the preamble of claim 1.
  • Such a circuit breaker is known from EP 0 599 800 A1.
  • one contact device of the outer conductor pole and the neutral conductor pole are arranged side by side within a common housing with the usual pole width in parallel planes. Both contact devices are separated from one another by an angled inner shell arranged in the arc quenching chamber of the outer conductor pole. The space in front of the arc extinguishing device is therefore considerably restricted, at least on one side. Coupled together are both contact devices via a slide guided in the inner shell, which in turn carries associated switching bridges on coaxially arranged bearing axes. When the switching mechanism is actuated, the two switching bridges, each supported by a compression spring, are pivoted in the same direction.
  • the switching bridges which are in principle directly coupled by means of a common bearing axis, significantly impair one another, particularly during the switching operations, so that the protective function of the outer conductor pole is adversely affected overall.
  • the invention has for its object to provide a circuit breaker of the type mentioned in such a way that the switching function and operation of the outer conductor pole unchanged compared to a normal circuit breaker d. the spatial arrangement of the switching mechanism is retained.
  • the invention has the advantage that the protected outer conductor pole works like a normal circuit breaker and is predominantly formed from unchanged parts of such a switch. With the same housing size, the unprotected neutral conductor pole is additionally integrated into this structure in a space-saving and functional manner. In addition, it is ensured that the neutral contact only closes automatically with its own contact spring during the switching-in process, and only then does the external conductor contact. In the closed position of the neutral conductor contact, the frictional connection to the contact device nasty outer conductor pole is also completely eliminated. Its contact lever can thus ultimately pivot freely into the closed position as in the case of a circuit breaker alone.
  • the contact spring of the movable neutral conductor contact very quickly reduces its counterforce to the contact spring of the outer conductor contact, which is thus hardly delayed.
  • This effect is achieved by means of a contact spring of the neutral conductor pole designed as a tension spring and its particularly advantageously chosen suspension points.
  • the tension spring can pivot almost to the bearing point of the movable neutral contact in the opening process in an approximately dead center position, so that its moment in the closing direction very quickly reaches the value "zero". Therefore, the mutual influence is negligible even in the open position of the outer conductor pole and the neutral conductor pole.
  • the main advantage of the arrangement according to the invention arises during the opening process in the event of a short circuit. After the release of the switching lock, the impact of the magnetic core for the accelerated opening of the outer conductor contact is transmitted directly to the slide arranged in the same direction, so that it also acts on the neutral conductor contact in the opening direction with a time lag. The welding of the neutral conductor contact is therefore reliably prevented by the impact of the magnetic release, just like at home outer conductor contact.
  • FIG. 1 shows a simplified circuit breaker with outer conductor pole and neutral conductor pole in its functional level in the off position, while in FIG. 2 shows the switch-on position of the line circuit breaker in the same representation.
  • the circuit breaker which is only partially shown open, has a switch housing 1, which is only indicated with its outer contours, which is composed of two half-shells in a known manner and is about 18 mm thick in the plane of the drawing, that is to say has a customary pole width as the pitch.
  • the switch housing which corresponds to the relevant standard dimensions for circuit breakers with its outer contours, has in its interior a switching mechanism 2, a contact device 3 for the protected outer conductor pole "L”, a magnetic release ⁇ . a switching and quenching chamber 5 and a thermal trigger 6.
  • the aforementioned modules 2 to 6 largely consist of existing components of a normal single-pole circuit breaker and are practically unchanged in terms of their arrangement and their function compared to such a switch. Only in the housing base l.
  • connection terminals In the conventional area of the connection terminals, substantial changes are required in the inner housing contours in order to obtain sufficient space for double the number of terminals (one input and output terminal each for the outer conductor pole and the neutral conductor pole) and additionally in the input terminal area 1. 2 to enable the arrangement of a contact device 7 for the neutral conductor pole "N" in addition to the mechanical and electrical components required for this.
  • the core of the invention Kunststoffi direction 7 for the neutral conductor "N” is arranged laterally below the thermal release 6 in the housing base 1. 1 in the immediate vicinity of the associated input terminal 8.
  • the works Contact device 7 in the same, but slightly vertically offset movement plane (corresponds to the drawing plane) as the contact device 3 for the outer conductor pole "L".
  • the contact device 7 consists essentially of a double-armed contact lever 7.1 which can be pivoted about an axis 7.2 fixed to the housing and which cooperates with a slide 9 to be described in more detail at its free lever end 7.11 opposite the actual contact point 7.3.
  • the contact lever 7.1 works under the action of its contact spring 7.4 on a fixed contact piece 8.1.
  • an equal-sized (not shown) input terminal for the outer lead pole is arranged in a plane above the input terminal 8 and is filed by the latter by means of an insert part I .3 (indicated by dash-dot lines) in the housing base.
  • An electrical connection leads directly from this terminal to the base point 6.1 of the thermal release 6 (indicated schematically by means of a short piece of flexible conductor 6.2), which is arranged sufficiently insulated from the contact device 7.
  • a flexible line 6.4 leads to the pivotable contact lever 3.1 as part of the contact device 3 of the protected outer conductor pole.
  • the contact lever 3.1 of the outer conductor pole is pivotally mounted with its elongated hole on an axis 3.2 which is fixed to the housing and at the same time can be displaced laterally by a small value in order to compensate for changes caused by erosion at the contact-side end 3.3 in addition to the buildup of the contact pressure. So that the contact lever works on a fixed contact piece 4.1, which is included via a so-called contact horn 4.2 in a yoke 4.3 of the magnetic release 4. which in turn encloses a winding 4.4 like a frame.
  • the current path of the outer conductor pole leads directly from the winding to an output terminal (not shown) on the top of the switch housing.
  • the winding 4.4 surrounds a magnetic core 4.5.
  • the contact lever 3.1 is provided with a bore 3.5 into which the slide 9 engages in an articulated manner with a pin 9.1.
  • the slide 9 is also guided laterally, for example between the housing webs 1.4 shown schematically, so that it cannot deflect, in particular in the region of the contact lever 7.1. This is behind these housing bars free end of the slide 9 is provided with a thrust surface 9.2, which with the free
  • Lever end 7.1 1 of the neutral conductor contact lever cooperates and their operation is discussed in more detail.
  • the slide 9 is arranged and guided in the manner described above such that its main axis has the same direction as the direction of impact of the magnetic core 4.5.
  • This ensures that the movement of the magnetic core via the "hammer head end” 2.1 1 and the abruptly opening contact lever 3.1 takes effect exactly in the longitudinal axis of the slide 9 and this transmits almost the full impact anchor effect.
  • This force is thus available on the thrust surface 9.2 in order to hit the lever end 7.1 1 during the opening process after covering a short free path (distance "X" in FIG. 2) and to move the contact lever 7.1 about its axis 7.2 into the off position according to Fig. 1 to pivot.
  • the contact spring 3.4 of the outer conductor pole which is considerably stronger than the contact spring 7 4 of the neutral conductor pole.
  • the latter is also designed as a tension spring and, with its longer, slightly angled hook-shaped eyelet, is suspended in an eye 7.5 of the contact lever approximately in the middle between the axis 7.2 and the contact point 7.3, while its shorter eyelet engages over a fixed bolt 1.5.
  • the position of this pin 1.5 is spatially assigned to the contact lever 7.1 such that the contact spring 7.4 pulls on an already effective, relatively short lever arm in the switched-on position (FIG. 2), while in the switched-off position (FIG. 1) the lever arm almost has the value " Reached zero ".
  • the contact lever 3.1 pivots about its axis 3.2 and takes the slide 9 over the pin 9.1 in Clockwise with.
  • the lever end 7.1 1 resting on the thrust surface 9.2 moves in the same direction under the action of the contact spring 7.4, the pivoting moment of which on the contact lever 7.1 increases due to the displacement of the eye 7.5. If the contact point 7 3 has reached the fixed contact piece 8.1 during this movement sequence, it comes to rest there, the contact spring 7.4 now unfolding its greatest force and applying only the contact pressure.
  • Knee joint lever 2.3 supported and pulled by the contact spring 3.4

Landscapes

  • Breakers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Details Of Aerials (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Recrystallisation Techniques (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

Dans le boîtier (1) de ce disjoncteur de protection de ligne avec seulement une largeur polaire normale sont disposés un pôle de conducteur extérieur (L) à protection thermique et magnétique et un pôle de conducteur neutre (N) sans protection, à chacun desquels est associé un dispositif de contact (3 ou 7). Ces deux dispositifs de contact (3, 7) comportent des leviers de contact (3.1 ou 7.1) agissant sur des contacts fixes (4.1 ou 8.1), qui sont couplés par l'intermédiaire d'une coulisse (9) et commandés par un mécanisme de commutation (2) à actionnement manuel. Dans le but de conserver, dans un tel disjoncteur, la fonction de commutation et le mode de fonctionnement du pôle de conducteur extérieur (L) ainsi que la même configuration spatiale de base que dans un disjoncteur de protection de ligne ordinaire et, notamment, d'empêcher les contacts du conducteur neutre (7.3, 8.1) de se souder, les deux dispositifs de contacts (3, 7) sont montés dans le plan fonctionnel du mécanisme de commutation (2) l'un au-dessus de l'autre avec des points d'appui séparés dans l'espace (axes 3.2 ou 7.2) pour leurs leviers de contact (3.1, 7.1). Le dispositif de contact (7) pour le pôle de conducteur neutre (N) est situé dans le socle du boîtier (1.1) immédiatement au voisinage de la région de bornes d'entrée (8) et est couplé avec le levier de contact (3.1) du pôle de conducteur extérieur (L) par l'intermédiaire de la coulisse (9) partiellement par liaison de forme et partiellement par liaison de force. D'autre part, la coulisse (9) est disposée pratiquement dans le prolongement axial du déclencheur magnétique (4) pourvu d'un solénoïde (4.5) de telle manière que, en cas de court-circuit, le solénoïde (4.5) frappant le levier de contact (3.1) à l'aide d'un élément intermédiaire (levier de déclenchement 2.1 ou 2.11) frappe également le levier de contact (7.1) du pôle de conducteur neutre (N) dans le même sens.
EP96901231A 1995-02-03 1996-02-02 Disjoncteur de protection de ligne Expired - Lifetime EP0807313B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19503530 1995-02-03
DE19503530A DE19503530B4 (de) 1995-02-03 1995-02-03 Leitungsschutzschalter
PCT/DE1996/000166 WO1996024150A1 (fr) 1995-02-03 1996-02-02 Disjoncteur de protection de ligne

Publications (2)

Publication Number Publication Date
EP0807313A1 true EP0807313A1 (fr) 1997-11-19
EP0807313B1 EP0807313B1 (fr) 2002-05-15

Family

ID=7753099

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96901231A Expired - Lifetime EP0807313B1 (fr) 1995-02-03 1996-02-02 Disjoncteur de protection de ligne

Country Status (8)

Country Link
EP (1) EP0807313B1 (fr)
AT (1) ATE217731T1 (fr)
CZ (1) CZ286737B6 (fr)
DE (2) DE19503530B4 (fr)
HU (1) HU221487B (fr)
PL (1) PL180036B1 (fr)
SI (1) SI9620029A (fr)
WO (1) WO1996024150A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102332370A (zh) * 2011-09-06 2012-01-25 浙江加西亚电子电器有限公司 一种小型漏电断路器

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19725000A1 (de) * 1997-06-13 1998-12-17 Abb Patent Gmbh Installationsschaltgerät
DE10102708B4 (de) * 2001-01-22 2004-08-26 Aeg Niederspannungstechnik Gmbh & Co Kg Leitungsschutzschalter
AT504033B1 (de) * 2003-07-17 2012-03-15 Moeller Gebaeudeautomation Kg Schutzschalter
DE102006036194B4 (de) * 2006-08-01 2019-09-26 Siemens Aktiengesellschaft Schaltvorrichtung mit Schaltstellenpaar
DE102006036191A1 (de) * 2006-08-01 2008-02-07 Siemens Ag Schaltvorrichtung
CN107146745B (zh) * 2016-03-01 2020-02-18 浙江正泰电器股份有限公司 电子式漏电断路器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8027246U1 (de) * 1980-10-11 1981-03-12 Ellenberger & Poensgen Gmbh, 8503 Altdorf Überstromschutzschalter
EP0054499B1 (fr) * 1980-12-16 1984-06-13 Legrand Disjoncteur à sectionnement de neutre
DE3242062A1 (de) * 1982-11-13 1984-05-17 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer schalter
DE3410157A1 (de) * 1984-03-20 1985-09-26 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer schalter mit je einer schaltkontaktstelle fuer einen phasenleiter und fuer einen nulleiter
DE4329100A1 (de) * 1992-10-08 1994-04-14 Abb Patent Gmbh Elektrischer Schalter
AT402583B (de) * 1992-11-25 1997-06-25 Felten & Guilleaume Ag Oester Leitungsschutzschalter mit einem thermisch und magnetisch geschützten aussenleiterpol und einem ungeschützten nulleiterpol
ATE153478T1 (de) * 1993-06-15 1997-06-15 Kopp Heinrich Ag Hilfs- und signalschalter für schutzschaltgeräte

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9624150A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102332370A (zh) * 2011-09-06 2012-01-25 浙江加西亚电子电器有限公司 一种小型漏电断路器

Also Published As

Publication number Publication date
SI9620029A (sl) 1998-02-28
HU221487B (en) 2002-10-28
DE59609216D1 (de) 2002-06-20
DE19503530A1 (de) 1996-08-08
ATE217731T1 (de) 2002-06-15
WO1996024150A1 (fr) 1996-08-08
PL180036B1 (en) 2000-12-29
PL321260A1 (en) 1997-11-24
DE19503530B4 (de) 2006-07-06
HUP9800194A2 (hu) 1998-06-29
EP0807313B1 (fr) 2002-05-15
CZ286737B6 (en) 2000-06-14
CZ241897A3 (cs) 1999-01-13
HUP9800194A3 (en) 2000-03-28

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