EP0599800B1 - Disjoncteur de ligne - Google Patents

Disjoncteur de ligne Download PDF

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Publication number
EP0599800B1
EP0599800B1 EP93890207A EP93890207A EP0599800B1 EP 0599800 B1 EP0599800 B1 EP 0599800B1 EP 93890207 A EP93890207 A EP 93890207A EP 93890207 A EP93890207 A EP 93890207A EP 0599800 B1 EP0599800 B1 EP 0599800B1
Authority
EP
European Patent Office
Prior art keywords
conductor pole
neutral
contact apparatus
contact
circuit
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
EP93890207A
Other languages
German (de)
English (en)
Other versions
EP0599800A1 (fr
Inventor
Franz Ing. Reil
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.)
Felten and Guilleaume Austria AG
Original Assignee
Felten and Guilleaume Austria 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 Felten and Guilleaume Austria AG filed Critical Felten and Guilleaume Austria AG
Publication of EP0599800A1 publication Critical patent/EP0599800A1/fr
Application granted granted Critical
Publication of EP0599800B1 publication Critical patent/EP0599800B1/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
    • 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
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H2071/0292—Housing or frames containing grooves or slots for guiding movable parts

Definitions

  • the invention relates to a circuit breaker with a thermally and magnetically protected outer conductor pole, an unprotected neutral conductor pole and with an arc quenching device for the outer conductor pole, a contact apparatus of the outer conductor pole being arranged essentially parallel to a contact apparatus of the neutral conductor pole, separated from it by an inner shell and coupled to the latter .
  • circuit breakers are known (see e.g. EP-A-0 042 778).
  • a circuit breaker is known from EP-A-0 045 672, wherein no arc quenching device is provided for the neutral conductor.
  • the contact apparatus of the neutral conductor pole is arranged above two arc extinguishing devices of the outer conductor pole which essentially cover the entire width of the circuit breaker.
  • the object of the invention is to provide a generic circuit breaker whose size does not exceed that of a circuit breaker without a contact device for a neutral conductor pole, i.e. a "pitch" is wide without other essential components of the circuit breaker, e.g. the magnetic trigger and the arc extinguishing device, considerably reduced in size and thus severely weakened in their effect.
  • this object is achieved in a generic circuit breaker by the characterizing features of claim 1.
  • the arc quenching device for the neutral conductor as is known from EP-A-42778, was performed.
  • the invention takes advantage of the fact that in addition to the contact apparatus of the outer conductor pole u. U. by a slight lateral displacement of the same, in front of the arc quenching device for the outer conductor pole, there is sufficient space for the contact apparatus of the neutral conductor pole.
  • the arc quenching device for the outer conductor pole nor the other thermal and magnetic protective devices of the circuit breaker are limited in size.
  • Appropriate insulation i.e.
  • an angled inner shell is provided which fulfills this task.
  • ceramic or plastic plates are often used to limit the arc and to create return flow channels between these ceramic or plastic plates and the housing walls for better circulation of the ionized gases and acceleration of the arc running Contact point to the arc quenching chamber provided.
  • this can therefore be characterized in that a plate is provided for the outer conductor pole on the side of the contact apparatus opposite the inner shell and that a return flow channel is formed between this plate and the housing wall of the circuit breaker.
  • the contact apparatus for the neutral conductor pole takes the place of a return flow channel, which, however, can be largely compensated for by a streamlined design of the other return flow channel, so that practically no significant deterioration of this function occurs.
  • the width of the arc extinguishing device corresponds essentially to the sum of the width of the contact apparatus of the neutral conductor pole, the thickness of the inner shell, the width of the contact apparatus of the outer conductor pole, the thickness of the plate and the width of the backflow channel.
  • This embodiment ensures that the arc quenching chamber, which is preferably designed as described in AT-PS 382 741, can be dimensioned very large in order to ensure quick and safe quenching of the arc.
  • this is characterized in that the switching bridge of the contact apparatus of the outer conductor pole is mechanically coupled to the switching bridge of the contact apparatus of the neutral conductor pole, the invention being particularly characterized in that the switching bridge of the outer conductor pole is connected to the switching bridge via a slide of the neutral conductor pole is connected, which preferably carries coaxial bearing axes for the switching bridges and which is slidably mounted in the inner shell.
  • the slide can preferably be designed as described in AT-PS 380 751.
  • the arcs of the outer conductor pole and the neutral conductor pole influence each other when the contact apparatus is opened.
  • This effect can be used according to the invention in that the arc of the neutral conductor pole accelerates the arc of the outer conductor pole in the direction of the arcing chamber.
  • the small distance between the contact points of the outer conductor pole and the neutral conductor pole has a very favorable effect due to the design according to the invention.
  • the circuit breaker can therefore be developed so that the distance between the arc extinguishing device and the contact for the outer conductor pole is smaller than the distance between the arc quenching device and the contact for the neutral conductor pole. If the two contact apparatuses are opened at the same time, the arc of the neutral conductor pole is located behind the arc of the outer conductor pole with respect to the arc quenching chamber and accelerates it in the direction of the arc quenching chamber.
  • the switching bridge of the outer conductor pole with its end opposite the contact is in contact with a housing-fixed bearing when the switch is open
  • the switching bridge of the neutral conductor pole lies with its end opposite the contact is in contact with a housing-fixed bearing when the switch is open
  • the distance between the end of the switching bridge of the outer conductor pole and the housing-fixed bearing is approximately the same or smaller than the distance between the end of the switching bridge for the neutral conductor pole and the housing-fixed bearing when the contacts are closed , at approximately the same distance between the corresponding bearing axes of the switching bridges on the slide and the fixed bearings.
  • the contact apparatus of the neutral conductor pole is opened in time after the contact apparatus of the outer conductor pole, which likewise results in the arc of the neutral conductor pole lagging behind the arc of the outer conductor pole and accelerating the latter towards the arc quenching chamber.
  • a circuit breaker shown in FIGS. 1 to 5 has a structure known per se and is accommodated in a housing 11 with a lower shell 1 and an upper shell 2.
  • a housing 11 In the housing 11 (FIG. 5) there is a conventional magnetic release, a bimetallic release, an arc quenching chamber 24 and a mechanism for actuating the contact apparatus. Since these components of the circuit breaker can have a conventional structure, only the parts essential for understanding the invention are briefly explained below with reference to FIGS. 1 and 2.
  • a movable switching bridge 18 for an outer conductor pole which can be clamped to the circuit breaker via terminals 30, the latter is coupled via a bridge bracket 5 and an articulated bracket 6 to an actuating button 3 pivotably mounted in the housing 11.
  • the end of the hinge bracket 6 which is adjacent to the switching bridge 18 is coupled via a jack bracket 4 to a jack 16 which is pivotably mounted in the housing 11. If the operating button 3 is pivoted, the switching bridge 18 moves against the force of a spring 31 in contact with a fixed contact 19 and the pawl 16 is held by a pawl rest 17 loaded by a spring 7.
  • the switching bridge 18 is mounted at its end 13 opposite the contact 19 via a slot-like bore 14 on a housing-fixed bearing 15, in the exemplary embodiment a bearing pin, with play.
  • a contact apparatus for the neutral conductor pole consisting of switching bridge 53 and contact 55 is arranged, which is separated by an inner shell 48 from the contact apparatus 18, 19 for the outer conductor pole and the arc quenching chamber 24 arranged in front of it is separated.
  • the neutral conductor pole can be connected to the circuit breaker via terminals 29.
  • the inner shell 48 has a substantially Z-shaped cross-section, a first leg 56 separating the contact apparatus for the outer conductor pole and the neutral conductor pole, the central web 57 separating the contact apparatus 53, 55 of the neutral conductor pole from the arc quenching chamber 24 and the second free leg 58 Z-shaped inner shell 48 delimits the arc quenching chamber 24 on the same side on which the contact apparatus for the neutral conductor pole is located next to the contact apparatus for the outer conductor pole. In this way it is ensured that the contact apparatus for the neutral conductor pole is completely separated from the contact apparatus for the outer conductor pole and from the arc quenching chamber 24, so that no overflowing, ionized gases can cause a flashover. In addition, it is not necessary for the arc quenching chamber 24 to be reduced in size.
  • a plate 38 made of plastic or ceramic is arranged which, like the leg 56 of the inner shell 48, limits the arc when running from the contact apparatus 18, 19 to the arc quenching chamber 24. Furthermore, a backflow channel 13 is formed by the plate 38 and the lower shell 1 of the housing 11, through which the ionized gases can flow away from the arc quenching chamber into the rear part of the circuit breaker, as a result of which better circulation of the ionized gases and thus an acceleration of the arcing of the contact point 18, 19 to the arc extinguishing chamber 24 is reached.
  • the switching bridge 18 of the outer conductor pole is mechanically coupled to the switching bridge 53 of the neutral conductor pole via a slide 49 which is in a slot in the inner shell 48 is that there can be no undesired overflow of ionized gases through this slot.
  • Two bearing axes 50, 52 for the switching bridges 18, 53 are arranged coaxially on the slide 49, the bearing axis 50 for the switching bridge 18 also simultaneously forming the connecting axis between the switching bridge 18 and the bridge tab 5.
  • the end 62 of the switching bridge 53 opposite the fixed contact 55 of the neutral conductor pole is assigned a bearing 63 fixed to the housing (FIGS. 3 and 4), on which the end 62 of the switching bridge 53 is supported when the switching bridge 53 is separated from the fixed contact 55 by the slide 49 is moved away and is pivoted about the bearing axis 52 on the slide 49.
  • a "lagging" of the arc of the neutral conductor pole behind the arc of the outer conductor pole is achieved in that the Switching bridge 53 of the neutral conductor pole is opened later than the switching bridge 18 of the outer conductor pole. This is done in that in the closed state of the contacts 18, 19 and 53, 55, the distance between the end 62 of the switching bridge 53 and the housing-fixed bearing 63 is equal to or slightly larger than the distance between the housing-fixed bearing 15 and the lower end of the Elongated hole 14 in the switching bridge 18 for the outer conductor pole.
  • the slide 49 is also moved upwards via the bearing axis 50, whereby it also follows the switching bridge 53 of the neutral conductor pole via the bearing axis 52 moved up. Due to the distance between the end 62 of the switching bridge 53 and the support 63 fixed to the housing, the switching bridge 53 of the neutral conductor pole is not immediately lifted from the fixed contact 55, but only after the end 62 is in contact with the bearing 63 and the switching bridge 53 by the force of the spring 26 or the movement of the slide 49 is pivoted away from the fixed contact 55. This results in a slight delay in opening the contact apparatus 53, 55 compared to that of the contact apparatus 18, 19 of the outer conductor pole, which leads to a lag of the arc of the neutral conductor pole behind the arc of the outer conductor pole.
  • the invention specifies a circuit breaker with a contact apparatus for a neutral conductor pole which, compared to a circuit breaker without a contact apparatus for a neutral conductor pole, has only slightly deteriorated performance characteristics with the same size, the arrangement of the contact apparatuses for the outer conductor pole and the inventive arrangement Neutral conductor pole the arc extinguishing can be supported significantly.

Landscapes

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

Claims (9)

  1. Disjoncteur de protection de ligne avec un pôle conducteur externe protégé thermiquement et magnétiquement, un pôle conducteur neutre non protégé et avec un dispositif d'extinction d'arc électrique (24) pour le pôle conducteur externe, un mécanisme de contact (18, 19) du pôle conducteur externe étant disposé essentiellement parallèle à côté d'un mécanisme de contact (53, 55) du pôle conducteur neutre, séparé de celui-ci par un voile interne (48) et accouplé (49) à celui-ci,
    caractérisé en ce qu'un dispositif d'extinction d'arc électrique (24) n'est prévu que pour le pôle conducteur externe, qui prend essentiellement toute la largeur du disjoncteur de protection de ligne, que le mécanisme de contact (53, 55) du pôle conducteur neutre est disposé du même côté que le mécanisme de contact (18, 19) du pôle conducteur externe devant le dispositif d'extinction d'arc électrique (24) et que le voile interne (48) est replié dans la zone entre le mécanisme de contact (53, 55) du pôle conducteur neutre et le mécanisme de contact (18, 19) du pôle conducteur externe ou respectivement le dispositif d'extinction d'arc électrique (24).
  2. Disjoncteur de protection de ligne selon la revendication 1,
    caractérisé en ce qu'une plaque (38) est disposée du côté du mécanisme de contact (18, 19) pour le pôle conducteur externe en regard du voile interne (48) et qu'un canal de refluement (13) est formé entre cette plaque (38) et la paroi de boîtier (1) du disjoncteur de protection de ligne.
  3. Disjoncteur de protection de ligne selon la revendication 2,
    caractérisé en ce que la largeur du dispositif d'extinction d'arc électrique (24) correspond essentiellement à la somme de la largeur du mécanisme de contact (53, 55) du pôle conducteur neutre, de l'épaisseur du voile interne (48), de la largeur du mécanisme de contact (18, 19) du pôle conducteur externe, de l'épaisseur de la plaque (38) et de la largeur du canal de refluement (13).
  4. Disjoncteur de protection de ligne selon l'une des revendications 1 à 3,
    caractérisé en ce que le pont de commutation (18) du mécanisme de contact (18, 19) du pôle conducteur externe est accouplé mécaniquement au pont de commutation (53) du mécanisme de contact (53, 55) du pôle conducteur neutre.
  5. Disjoncteur de protection de ligne selon la revendication 4,
    caractérisé en ce que le pont de commutation (18) du pôle conducteur externe est relié au pont de commutation (53) du pôle conducteur neutre par l'intermédiaire d'une coulisse (49) qui porte de préférence des axes de support (50, 52) coaxiaux pour les ponts de commutation (18, 53) et qui est montée coulissante dans le voile interne (48).
  6. Disjoncteur de protection de ligne selon l'une des revendications 1 à 5,
    caractérisé en ce que le voile interne (48) est replié essentiellement en forme de Z, la première branche (56) du voile interne (48) formant la paroi séparatrice entre les mécanismes de contact (18, 19 ; 53, 55) pour les pôles conducteur externe et conducteur neutre, la partie médiane (57) du voile interne (48) formant la paroi séparatrice entre le mécanisme de contact (53, 55) et le dispositif d'extinction d'arc électrique (24) et la seconde branche (58), parallèle à la première branche (56), bordant le dispositif d'extinction d'arc électrique (24) sur le côté où se trouve le mécanisme de contact (53, 55) pour le pôle conducteur neutre.
  7. Disjoncteur de protection de ligne selon l'une des revendications 1 à 6,
    caractérisé en ce que la distance entre le dispositif d'extinction d'arc électrique (24) et le contact (19) pour le pôle conducteur externe est inférieure à la distance entre le dispositif d'extinction d'arc électrique (24) et le contact (55) pour le pôle conducteur neutre .
  8. Disjoncteur de protection de ligne selon l'une des revendications 1 à 7,
    caractérisé en ce qu'est prévu un dispositif qui ouvre le mécanisme de contact (53, 55) pour le pôle conducteur neutre plus tard que le mécanisme de contact (18, 19) pour le pôle conducteur externe.
  9. Disjoncteur de protection de ligne selon la revendication 8,
    caractérisé en ce que le pont de commutation (18) du pôle conducteur externe est en appui, par son extrémité (13) opposée au contact (19), à l'état ouvert du disjoncteur, contre un support (15) solidaire du boîtier, que le pont de commutation (53) du pôle conducteur neutre est en appui, par son extrémité (62) opposée au contact (55), à l'état ouvert du disjoncteur, contre un support (63) solidaire du boîtier et que, à l'état fermé des mécanismes de contact (18, 19 ; 53, 55), la distance entre l'extrémité (13) du pont de commutation (18) du pôle conducteur externe et le support (15) solidaire du boîtier est sensiblement égale ou inférieure à la distance entre l'extrémité (62) du pont de commutation (53) pour le pôle conducteur neutre et le support (63) solidaire du boîtier, pour une distance sensiblement égale entre les axes de support (50, 52) correspondants des ponts de commutation (18, 53) sur la coulisse (49) et les supports solidaires du boîtier (15, 63).
EP93890207A 1992-11-25 1993-10-22 Disjoncteur de ligne Expired - Lifetime EP0599800B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2336/92 1992-11-25
AT0233692A AT402583B (de) 1992-11-25 1992-11-25 Leitungsschutzschalter mit einem thermisch und magnetisch geschützten aussenleiterpol und einem ungeschützten nulleiterpol

Publications (2)

Publication Number Publication Date
EP0599800A1 EP0599800A1 (fr) 1994-06-01
EP0599800B1 true EP0599800B1 (fr) 1996-07-31

Family

ID=3532457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93890207A Expired - Lifetime EP0599800B1 (fr) 1992-11-25 1993-10-22 Disjoncteur de ligne

Country Status (11)

Country Link
EP (1) EP0599800B1 (fr)
AT (1) AT402583B (fr)
AU (1) AU672641B2 (fr)
CZ (1) CZ285282B6 (fr)
DE (1) DE59303359D1 (fr)
DK (1) DK0599800T3 (fr)
ES (1) ES2095626T3 (fr)
FI (1) FI106279B (fr)
GR (1) GR3021282T3 (fr)
NO (1) NO307160B1 (fr)
PL (1) PL172220B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19503530B4 (de) * 1995-02-03 2006-07-06 Aeg Niederspannungstechnik Gmbh & Co Kg Leitungsschutzschalter
FI116863B (fi) 2004-01-19 2006-03-15 Abb Oy Nollajohtimella varustettu kytkinlaite

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341791A (en) * 1964-06-16 1967-09-12 Square D Co Electric circuit breaker with improved operating mechanism
CH481481A (it) * 1968-04-13 1969-11-15 Bassani Spa Interruttore automatico con camera deionizzante
JPS56162436A (en) * 1980-05-20 1981-12-14 Matsushita Electric Works Ltd Circuit breaker
FR2485254A1 (fr) * 1980-06-19 1981-12-24 Merlin Gerin Disjoncteur miniature unipolaire et neutre
FR2488440A1 (fr) * 1980-08-06 1982-02-12 Merlin Gerin Disjoncteur miniature a coupure du neutre et de la phase
AT378283B (de) * 1983-11-28 1985-07-10 Felten & Guilleaume Ag Oester Leitungsschutzschalter mit schalter fuer einen mittelleiter
AT382741B (de) * 1985-11-15 1987-04-10 Felten & Guilleaume Ag Oester Lichtbogenloeschkammer
FR2600210B1 (fr) * 1986-06-17 1993-04-16 Telemecanique Electrique Disjoncteur a deux circuits de commutation dont l'un est protege
FR2648614B1 (fr) * 1989-06-16 1994-03-11 Hager Electro Sa Disjoncteur phase et neutre
FR2674369B1 (fr) * 1991-03-20 1996-09-20 Merlin Gerin Disjoncteur electrique de phase et neutre a encombrement reduit.

Also Published As

Publication number Publication date
NO307160B1 (no) 2000-02-14
ES2095626T3 (es) 1997-02-16
PL301021A1 (en) 1994-05-30
DE59303359D1 (de) 1996-09-05
AU5194193A (en) 1994-06-09
EP0599800A1 (fr) 1994-06-01
FI935152A (fi) 1994-05-26
CZ285282B6 (cs) 1999-06-16
NO934253L (no) 1994-05-26
NO934253D0 (no) 1993-11-24
PL172220B1 (pl) 1997-08-29
AU672641B2 (en) 1996-10-10
CZ254093A3 (en) 1994-06-15
GR3021282T3 (en) 1997-01-31
FI935152A0 (fi) 1993-11-19
ATA233692A (de) 1996-10-15
DK0599800T3 (da) 1996-08-26
AT402583B (de) 1997-06-25
FI106279B (fi) 2000-12-29

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