EP0011542A1 - Circuit breaker with separated main and shunt current paths - Google Patents

Circuit breaker with separated main and shunt current paths Download PDF

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Publication number
EP0011542A1
EP0011542A1 EP79400819A EP79400819A EP0011542A1 EP 0011542 A1 EP0011542 A1 EP 0011542A1 EP 79400819 A EP79400819 A EP 79400819A EP 79400819 A EP79400819 A EP 79400819A EP 0011542 A1 EP0011542 A1 EP 0011542A1
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EP
European Patent Office
Prior art keywords
contacts
main
circuit
circuit breaker
movable
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Granted
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EP79400819A
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German (de)
French (fr)
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EP0011542B1 (en
EP0011542B2 (en
Inventor
Jean-Louis Mircovich
Marcel Macaire
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Merlin Gerin SA
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Merlin Gerin SA
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/122—Load break switches both breaker and sectionaliser being enclosed, e.g. in SF6-filled container
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas

Abstract

Les bornes d'amenée de courant (20, 22) forment des noeuds de dérivation du circuit principal (14) et du circuit auxiliaire (16), qui s'étendent parallèlement à faible distance à l'intérieur de l'enveloppe (10). Un conducteur shunt (54) est agencé dans le circuit auxiliaire (16) entre la tige (46) et la borne (22) inférieure et une paroi intermédiaire (56) en matériau isolant partage l'espace interne de l'enveloppe (10) en deux compartiments (60, 62) superposés, dont l'un (60) renferme les contacts principaux (24, 38) et l'autre (62) l'intervalle de coupure (64).The current supply terminals (20, 22) form bypass nodes of the main circuit (14) and the auxiliary circuit (16), which extend parallel at a short distance inside the envelope (10) . A shunt conductor (54) is arranged in the auxiliary circuit (16) between the rod (46) and the lower terminal (22) and an intermediate wall (56) of insulating material shares the internal space of the envelope (10) into two superimposed compartments (60, 62), one of which (60) contains the main contacts (24, 38) and the other (62) of the cut-off interval (64).

Description

L'invention est relative à un disjoncteur électrique à autosoufflage comprenant

  • - une enveloppe étanche remplie d'un gaz isolant à rigidité diélectrique élevée, notamment de l'hexafluorure de soufre et ayant à l'intérieur de ladite enveloppe
  • - un circuit principal de passage du courant ayant une paire de contacts principaux dont l'un est mobile,
  • - un circuit auxiliaire de shuntage du circuit principal ayant une paire de contacts d'arc, dont l'un est mobile,
  • - un mécanisme de commande desdits contacts mobiles pour séparer lesdits contacts principaux avant la séparation desdits contacts d'arc,
  • - lesdits contacts principaux et contacts d'arc étant disposés dans le même gaz isolant,
  • - une paire de traversées traversant d'une manière étanche la paroi de ladite enveloppe et constituant respectivement une borne d'entrée et une borne de sortie du disjoncteur.
The invention relates to a self-blowing electric circuit breaker comprising
  • - a sealed envelope filled with an insulating gas with high dielectric strength, in particular sulfur hexafluoride and having inside said envelope
  • - a main current flow circuit having a pair of main contacts, one of which is movable,
  • - an auxiliary shunt circuit of the main circuit having a pair of arcing contacts, one of which is movable,
  • a mechanism for controlling said movable contacts to separate said main contacts before the separation of said arcing contacts,
  • - said main contacts and arcing contacts being arranged in the same insulating gas,
  • - A pair of bushings sealingly crossing the wall of said envelope and respectively constituting an input terminal and an output terminal of the circuit breaker.

(brevet US 3257532 ou Un disjoncteur connu du genre mentionné (brevet français 1.458.334) comporte des contacts principaux entourant les contacts d'arc. Les contacts mobiles sont portés par un support coulissant connecté électriquement à l'une des bornes par un contact glissant. L'équipage mobile est relativement lourd et le courant permanent traverse ledit contact glissant. Le mécanisme de manoeuvre et les sections de passage de courant doivent être dimensionnés en conséquence. Une interaction des coupures est possible.(US Patent 3257532 or A known circuit breaker of the kind mentioned (French Patent 1,458,334) has main contacts surrounding the arcing contacts. The movable contacts are carried by a sliding support electrically connected to one of the terminals by a sliding contact The moving part is relatively heavy and the permanent current passes through said sliding contact. The operating mechanism and the current flow sections must be dimensioned accordingly. Interaction of the cuts is possible.

La présente invention a pour but de remédier aux inconvénients précités, et de réaliser un disjoncteur à autosoufflage perfectionné ayant un équipage mobile de faible inertie et une connexion à mouvement relatif non parcourue par le courant nominal, l'ensemble étant agencé pour éviter tout réamorçage sur les contacts principaux.The object of the present invention is to remedy the aforementioned drawbacks, and to provide an improved self-blowing circuit breaker having a movable assembly of low inertia and a connection with relative movement not traversed by the nominal current, the assembly being arranged to avoid any re-ignition on the main contacts.

Le disjoncteur est caractérisé par le fait que ledit circuit principal et ledit circuit auxiliaire sont connectés en parallèle auxdites bornes d'entrée et de sortie pour constituer deux circuits de passage du courant quasi indépendants à l'intérieur de ladite enveloppe, lesdits circuits principal et auxiliaire étant agencés pour assurer le passage de la quasi-totalité du courant dans le circuit principal en position fermée desdites paires de contacts et une commutation rapide du courant sur le circuit auxiliaire lors de la séparation des contacts principaux, ledit circuit auxiliaire comportant une connexion électrique à mouvement relatif entre le contact d'arc mobile et la borne associée, laquelle connexion n'est parcourue.- que par une faible fraction du courant permanent.The circuit breaker is characterized in that said main circuit and said auxiliary circuit are connected in parallel to said input and output terminals to constitute two almost independent current flow circuits inside said casing, said main and auxiliary circuits. being arranged to ensure the passage of almost all the current in the main circuit in the closed position of said pairs of contacts and rapid switching of the current on the auxiliary circuit when the main contacts are separated, said auxiliary circuit comprising an electrical connection to relative movement between the movable arcing contact and the associated terminal, which connection is traversed.- only by a small fraction of the permanent current.

L'invention part de la constatation de l'intérêt de la séparation des fonctions de conduction du courant permanent et de celle de coupure du courant, notamment de défaut. Le circuit principal assure la première fonction et la Jongueur et la section des conducteurs ainsi que la structure des contacts sont choisies à cet effet. La deuxième fonction est assurée par le circuit auxiliaire sur lequel le courant est commuté lors de la séparation des contacts principaux.The invention starts from the recognition of the advantage of separating the functions of conduction of the permanent current and that of breaking the current, in particular of fault. The main circuit provides the first function and the Juggler and the conductor section as well as the structure of the contacts are chosen for this purpose. The second function is provided by the auxiliary circuit on which the current is switched when the main contacts are separated.

On connait des disjoncteurs présentant une telle séparation des fonctions (brevets US 3.671.696 et britannique 1.126.362), mais la longueur du circuit principal et la différence des réactances des circuits principal et auxiliaire s'opposent à une répa rtition optimale des courants et à une commutation rapideCircuit breakers with such a separation of functions are known (US Pat. Nos. 3,671,696 and British 1,126,362), but the length of the main circuit and the difference in reactances of the main and auxiliary circuits prevent optimal distribution of the currents and fast switching

La disposition des contacts d'arc dans une enceinte spéciale sous vide complique l'ensemble. Un autre disjoncteur connu (brevet allemand 488.803) de ce type présente un circuit auxiliaire ayant une forte réactance par rapport à celle du circuit principal qui s'oppose à une commutation rapide du courant sur le circuit auxiliaire.The arrangement of the arcing contacts in a special vacuum enclosure complicates the whole. Another known circuit breaker (German patent 488.803) of this type has an auxiliary circuit having a high reactance with respect to that of the main circuit which prevents rapid switching of the current on the auxiliary circuit.

Selon un développement de l'invention, le circuit principal rectiligne s'étend longitudinalement dans l'enceinte à proximité et parallèlement au circuit auxiliaire, la réactance de la boucle formée par les circuits principal et auxiliaire étant faible. Le contact principal en forme de couteau pivotant effectue une course d'ouverture appropriée et indépendante de celle des contacts d'arc.According to a development of the invention, the straight main circuit extends longitudinally in the enclosure near and parallel to the auxiliary circuit, the reactance of the loop formed by the main and auxiliary circuits being low. The main contact in the form of a pivoting knife performs an appropriate opening stroke independent of that of the arcing contacts.

Les contacts d'arc et les contacts principaux sont avantageusement décalés longitudinalement pour éviter une interaction des coupures et une cloison interne de l'enveloppe peut séparer les zones de coupure.The arcing contacts and the main contacts are advantageously offset longitudinally to avoid an interaction of the cuts and an internal partition of the envelope can separate the cutting zones.

Le disjoncteur selon l'invention peut être du type à autosoufflage pneumatiqueet/ouàautosoufflage magnétique de l'arc tiré entre les contacts d'arc.The circuit breaker according to the invention may be of the type with pneumatic self-blowing and / or with magnetic self-blowing of the arc drawn between the arcing contacts.

D'autres avantages et caractéristiques ressortiront plus clairement de l'exposé qui va suivre d'un mode de réalisation de l'invention, donné à titre d'exemple non limitatif et représenté aux dessins annexés, dans lesquels :

  • la figure 1 est une vue schématique en élévation et en coupe verticale d'un disjoncteur à autosoufflage équipé d'un dispositif à contacts principaux selon l'invention;
  • la figure 2 est une coupe partielle selon la ligne II-II de la figure 1, en position de fermeture des contacts principaux.
Other advantages and characteristics will emerge more clearly from the description which follows of an embodiment of the invention, given by way of nonlimiting example and represented in the appended drawings, in which:
  • Figure 1 is a schematic view in elevation and in vertical section of a self-blowing circuit breaker equipped with a main contact device according to the invention;
  • Figure 2 is a partial section along the line II-II of Figure 1, in the closed position of the main contacts.

Sur les figures, un pôle du disjoncteur à autosoufflage comporte une enveloppe 10 étanche remplie de gaz isolant à haute rigidité diélectrique, notamment de l'hexafluorure de soufre. L'enveloppe 10, en matériau isolant moulé, est obturés pr un couvercle 12 et sert de logement à un circuit principal 14 de passage du courant nominal, un circuit auxiliaire 16 de shuntage du circuit principal pour la coupure de l'arc, un mécanisme de commande 18 de l'équipage mobile pour l'ouverture successive des circuits principal 14 et auxiliaire 16, et deux bornes 20, 22 d'amenée de courant constituées par des traversées de la paroi de l'enveloppe 10 isolante décalées longitudinalement.In the figures, a pole of the self-blowing circuit breaker comprises a sealed casing 10 filled with insulating gas with high dielectric strength, in particular sulfur hexafluoride. The casing 10, of molded insulating material, is closed pr a cover 12 and serves as a housing for a cir main circuit 14 for passing the nominal current, an auxiliary circuit 16 for shunting the main circuit for breaking the arc, a control mechanism 18 for the moving element for successive opening of the main circuit 14 and auxiliary circuit 16, and two terminals 20, 22 for supplying current constituted by crossings of the wall of the insulating casing 10 offset longitudinally.

Le circuit principal 14 comprend un contact principal mobile 24 doté d'une pluralité de paires de doigts 26a, 26b, 26c, 26d ..., articulés sur un axe 28 fixe solidaire d'un premier conducteur 30 de liaison avec la borne inférieure 22. Un moyen élastique, notamment un ressort de compression 32 est associé à chaque paire pour solliciter les doigts correspondants l'un vers l'autre, de manière à former une pince coopérant en position de fermeture du circuit principal 14 avec une extension 34, 36 d'un contact principal fixe 38. Ce dernier est relié électriquement à la borne supérieure 20 par un deuxième conducteur 40 de liaison. En position de fermeture le serrage des doigts 26a, 26b; 26c, 26d sur l'extension 34, 36 correspondante est renforcé par l'attraction électrodynamique s'exerçant entre lesdits doigts de chaque paire parcourus par des courants de même sens.The main circuit 14 comprises a movable main contact 24 provided with a plurality of pairs of fingers 26a, 26b, 26c, 26d ..., articulated on a fixed axis 28 secured to a first conductor 30 for connection with the lower terminal 22 An elastic means, in particular a compression spring 32 is associated with each pair to urge the corresponding fingers towards one another, so as to form a clamp cooperating in the closed position of the main circuit 14 with an extension 34, 36 a fixed main contact 38. The latter is electrically connected to the upper terminal 20 by a second connecting conductor 40. In the closed position, the tightening of the fingers 26a, 26b; 26c, 26d on the corresponding extension 34, 36 is reinforced by the electrodynamic attraction exerted between said fingers of each pair traversed by currents of the same direction.

Le circuit auxiliaire 16, branché en parallèle au circuit princioal 14 à l'intérieur de l'enveloppe 10, comporte des contacts d'arc alignés dont l'un fixe 42 est relié à la borne supérieure 20, et dont l'autre mobile 44 est solidaire d'une tige 46 conductrice accouplée à une manivelle 48 de commande. Le mécanisme d'actionnement extérieur transmet le mouvement à la manivelle 48 par l'intermédiaire d'un arbre 50 de transmission rotatif traversant la paroi de l'enveloppe 10 avec interposition d'un palier étanche 52. Une liaison électrique à mouvement relatif, notamment un conducteur shunt 54 flexible, est agencée dans le circuit auxiliaire 16 entre la tige 46 et la borne inférieure 22.The auxiliary circuit 16, connected in parallel to the main circuit 14 inside the casing 10, includes aligned arcing contacts, one of which is fixed 42 is connected to the upper terminal 20, and the other of which is movable 44 is integral with a conductive rod 46 coupled to a control crank 48. The external actuation mechanism transmits the movement to the crank 48 by means of a rotary transmission shaft 50 passing through the wall of the casing 10 with the interposition of a sealed bearing 52. An electrical connection with relative movement, in particular a flexible shunt conductor 54 is arranged in the auxiliary circuit 16 between the rod 46 and the lower terminal 22.

Une cloison 56 intermédiaire, parallèle au fond 58 et au couvercle 12 du pôle, partage l'espace interne de l'enveloppe 10 en deux compartiments 60, 62 distincts superposés. Le compartiment inférieur 60 renferme les contacts principaux 24, 38, et le compartiment supérieur 62 contient l'intervalle de coupure 64 ménagé entre les contacts d'arc 42, 44 en position séparée. La séparation physique entre la zone d'interruption des contacts principaux et l'intervalle de coupure 64 évite tout risque de réamorçage de l'arc au voisinage de ladite zone par suite de gaz chauds pollués provenant de la coupure.An intermediate partition 56, parallel to the bottom 58 and to the cover 12 of the pole, divides the internal space of the envelope 10 into two separate compartments 60, 62 superimposed. The lower compartment 60 contains the main contacts 24, 38, and the upper compartment 62 contains the cut-off interval 64 formed between the arcing contacts 42, 44 in a separate position. The physical separation between the main contact interruption zone and the cut-off interval 64 avoids any risk of re-ignition of the arc in the vicinity of said zone due to polluted hot gases coming from the cut.

Les bornes 20, 22 d'amenée de courant forment des noeuds de dérivation des deux circuits principal 14 et auxiliaire 16, et le conducteur shunt 54 est parcouru exclusivement par le courant de défaut. Les deux circuits 14, 16 s'étendent parallèlement à l'intérieur de l'enveloppe 10 avec un faible décalage transversal de manière à former une boucle de faible réactance, le circuit 14 suivant la plus courte trajectoire.The current supply terminals 20, 22 form bypass nodes of the two main 14 and auxiliary 16 circuits, and the shunt conductor 54 is traversed exclusively by the fault current. The two circuits 14, 16 extend parallel to the interior of the envelope 10 with a small transverse offset so as to form a loop of low reactance, the circuit 14 following the shortest path.

Le dispositif d'autosoufflage 66 d'un type bien connu des spécialistes est agencé dans.le compartiment supérieur 62 et comprend un piston 68 mobile assujetti à la tige 46. Le piston 68 porte une buse de soufflage 70 entourant coaxia- lement les contacts d'arc 42, 44 en position de fermeture, et coopère à coulissement limité avec un cylindre 72 fixe pour délimiter un volume 74 pistonnable de compression du gaz isolant. Lors de la séparation des contacts d'arc 42, 44 un écoulement de gaz de soufflage est chassé par des ouvertures 76 prévues dans le piston 68 dans le convergent de la buse 70, vers l'intervalle de coupure 64 pour l'extinction de l'arc.The self-blowing device 66 of a type well known to specialists is arranged in the upper compartment 62 and comprises a movable piston 68 secured to the rod 46. The piston 68 carries a blowing nozzle 70 coaxially surrounding the contacts d arc 42, 44 in the closed position, and cooperates with limited sliding with a fixed cylinder 72 to define a pistonable volume 74 for compressing the insulating gas. During the separation of the arcing contacts 42, 44 a flow of blowing gas is expelled through openings 76 provided in the piston 68 in the convergent of the nozzle 70, towards the cut-off interval 64 for extinction of the 'bow.

Le mécanisme d'actionnement comporte une liaison cinématique 78 reliant mécaniquement la tige 46 du contact d'arc 44 au contact mobile principal 24 pour transformer le mouvement rectiligne de la tige 46 en un mouvement de pivotement du contact 24 lors de la course de l'équipage mobile du disjoncteur. Cette liaison cinématique 78 est dotée d'un levier de transmission 80 assujetti aux doigts 26 et coopérant par son extrémité opposée avec un tourillon 82 d'en- trainement fixé sur la tige 46. La course des pinces du contact mobile principal 24 est différente et en particulier plus courte que celle du contact d'arc mobile 44.The actuation mechanism comprises a kinematic link 78 mechanically connecting the rod 46 of the arcing contact 44 to the main movable contact 24 to transform the rectilinear movement of the rod 46 into a pivotal movement ment of contact 24 during the travel of the moving equipment of the circuit breaker. This kinematic link 78 is provided with a transmission lever 80 secured to the fingers 26 and cooperating at its opposite end with a drive pin 82 fixed on the rod 46. The stroke of the clamps of the main movable contact 24 is different and in particular shorter than that of the movable arcing contact 44.

Le fonctionnement du disjoncteur selon les figures 1 et 2 découle de la description précédente, et il suffit de rappeler qu'en position de fermeture du disjoncteur, le courant nominal circule dans le circuit principal 14 dont la résistance électrique est inférieure à celle du circuit auxiliaire 16. Le trajet du courant est le suivant : borne supérieure 20, conducteur de liaison 40, contact principal fixe 38, contact principal mobile 24 (représenté en pointillé, figure 1), conducteur de liaison 30, borne inférieure 22. Aucun courant notable ne circule dans le shunt 54.The operation of the circuit breaker according to Figures 1 and 2 follows from the preceding description, and it suffices to recall that in the closed position of the circuit breaker, the nominal current flows in the main circuit 14 whose electrical resistance is lower than that of the auxiliary circuit 16. The current path is as follows: upper terminal 20, connection conductor 40, fixed main contact 38, mobile main contact 24 (shown in dotted lines, FIG. 1), connection conductor 30, lower terminal 22. No significant current is present. circulates in shunt 54.

Après détection d'un courant de défaut sur le réseau à protéger, le mécanisme d'actionnement provoque la translation axiale vers le bas (selon le sens de la flèche F) de la tige 46 et le pivotement du levier 80 dans le sens horaire entraînant l'ouverture des contacts principaux 24, 38, et la commutation du courant dans le circuit auxiliaire 16 de shuntage. Le trajet du courant de défaut est alors le suivant : borne supérieure 20, contact d'arc fixe 42, contact d'arc mobile 44, tige 46, conducteur shunt 54, conducteur 30, borne inférieure 22. La course poursuivie de l'équipage mobile provoque la séparation des contacts d'arc 42, 44 et le soufflage de gaz d'extinction de l'arc. La zone de coupure 64 est séparée physiquement des contacts principaux 38, 24, notamment par la cloison 56 et empêche tout réamorçage de l'arc entre lesdits contacts principaux.After detecting a fault current on the network to be protected, the actuation mechanism causes the downward axial translation (in the direction of the arrow F) of the rod 46 and the pivoting of the lever 80 clockwise causing the opening of the main contacts 24, 38, and the switching of the current in the auxiliary shunt circuit 16. The path of the fault current is then as follows: upper terminal 20, fixed arcing contact 42, movable arcing contact 44, rod 46, shunt conductor 54, conductor 30, lower terminal 22. The course of the crew continues mobile causes the separation of the arcing contacts 42, 44 and the blowing of extinguishing gas from the arcing. The cutting zone 64 is physically separated from the main contacts 38, 24, in particular by the partition 56 and prevents any re-ignition of the arc between said main contacts.

A la fermeture du disjoncteur les contacts d'arc 42, 44 peuvent se fermer en premier ou au contraire après la fermeture des contacts principaux 24, 38 selon les conditions de fonctionnement souhaitées. Le dispositif de commande est bien entendu agencé en conséquence.When the circuit breaker closes, the arcing contacts 42, 44 can close first or, on the contrary, after the main contacts 24, 38 close, depending on the desired operating conditions. The control device is of course arranged accordingly.

L'invention est applicable à un disjoncteur à autosoufflage pneumatique, à autosoufflage magnétique ou à autosoufflage magnétique et pneumatique combiné.The invention is applicable to a circuit breaker with pneumatic self-blowing, with magnetic self-blowing or with combined magnetic and pneumatic self-blowing.

L'invention n'est bien entendu nullement limitée au mode de mise en oeuvre plus particulièrement décrit et représenté aux dessins annexés, mais elle s'étend bien au contraire à toute variante restant dans le cadre des équivalences mécaniques et électriques, notamment celle dans laquelle le contact mobile principal 24 serait agencé en forme de pont actionné en translation radiale ou axiale par la liaison cinématique 78 lors du déplacement axial de la tige 46.The invention is of course in no way limited to the embodiment more particularly described and shown in the accompanying drawings, but it extends quite the contrary to any variant remaining within the framework of mechanical and electrical equivalences, in particular that in which the main movable contact 24 would be arranged in the form of a bridge actuated in radial or axial translation by the kinematic link 78 during the axial displacement of the rod 46.

Claims (10)

1. Disjoncteur électrique à autosoufflage comprenant : - une enveloppe (10) étanche remplie d'un gaz isolant à rigidité diélectrique élevée, notamment de l'hexafluorure de soufre et ayant à l'intérieur de ladite enveloppe - un circuit principal (14) de passage du courant ayant une paire de contacts principaux (24, 38) dont l'un (24) est mobile, - un circuit auxiliaire (16) de shuntage du circuit principal (L4) ayant une paire de contacts d'arc (42, 44), dont l'un (44) est mobile, - un mécanisme de commande (46, 48, 50, 80) desdits contacts mobiles (24, 44) pour séparer lesdits contacts principaux (24, 38) avant la séparation desdits contacts d'arc (42, 44), - lesdits contacts principaux (24, 38) et contacts d'arc (42, 44) étant disposés dans le même gaz isolant, - une paire de traversées (20, 22), traversant d'une manière étanche la pzroi de ladite enveloppe (10) et constituant respectivement une borne d'entrée et une borne de sortie du disjoncteur,
caractérisé par le fait que ledit circuit principal (14) et ledit circuit auxiliaire (16) sont connectés en parallèle auxdites bornes (20, 22) d'entrée et de sortie pour constituer deux circuits de passage du courant quasi- indépendants à l'intérieur de ladite enveloppe (10), lesdits circuits principal (14) et auxiliaire (16) étant agencés pour assurer le passage de la quasi-totalité du courant dans le circuit principal (14) en position fermée desdites paires de contacts (24, 38; 42, 44) et une commutation rapide du courant sur le circuit auxiliaire (16) lors de la séparation des contacts principaux (24, 38), ledit circuit auxiliaire (16) comportant une connexion électrique (54) à mouvement relatif entre le contact d'arc (44) mobile et la borne associée (22), laquelle connexion (54) n'est parcourue que par une faible fraction du courant permanent.1. Self-blowing electric circuit breaker comprising: - A sealed envelope (10) filled with an insulating gas with high dielectric strength, in particular sulfur hexafluoride and having inside said envelope a main circuit (14) for passing the current having a pair of main contacts (24, 38), one of which (24) is movable, an auxiliary circuit (16) for shunting the main circuit (L4) having a pair of arcing contacts (42, 44), one of which (44) is movable, a control mechanism (46, 48, 50, 80) of said movable contacts (24, 44) for separating said main contacts (24, 38) before the separation of said arcing contacts (42, 44), - said main contacts (24, 38) and arcing contacts (42, 44) being arranged in the same insulating gas, - a pair of bushings (20, 22), passing in a sealed manner through the pzroi of said casing (10) and constituting respectively an input terminal and an output terminal of the circuit breaker,
characterized in that said main circuit (14) and said auxiliary circuit (16) are connected in parallel to said input and output terminals (20, 22) to form two quasi-independent current flow circuits inside of said casing (10), said main (14) and auxiliary (16) circuits being arranged to ensure the passage of almost all of the current in the main circuit (14) in the closed position of said pairs of contacts (24, 38; 42, 44) and rapid switching of the current on the auxiliary circuit (16) during the separation of the main contacts (24, 38), said auxiliary circuit (16) comprising an electrical connection (54) with relative movement between the contact d 'arc (44) mobile and the associated terminal (22), which connection (54) is traversed only by a small fraction of the permanent current. 2. Disjoncteur selon 1, caracterisé en ce que ledit circuit principal (14) s'étend suivant la trajectoire la plus courte entre lesdites bornes (20,22) d'entrée et de sortie à l'intérieur de ladite enveloppe (10), ledit circuit auxiliaire (16) s'étendant parallèlement et à faible cis- tance du circuit principal (14).2. Circuit breaker according to 1, characterized in that said main circuit (14) extends along the shortest path between said input and output terminals (20, 22) inside said envelope (10), said auxiliary circuit (16) extending in parallel and at low speed from the main circuit (14). 3. Disjoncteur selon 1 ou 2. ayant une enveloppe (LO) allongée et un contact d'are (44) mobile suivant la direction longitudinale de l'enveloppe, caractérisé en ce que lesdites traversées (20, 22) sont espacées longitudinalement et sont reliées électriquement par un circuit principal (14) rectiligne s'étendant suivant la direction longitudinale à l'intérieur de l'enveloppe (10) en formant une boucle de réactance voisine de la réactance de la boucle formée par le circuit auxiliaire (16).3. Circuit breaker according to 1 or 2. having an elongated casing (LO) and an air contact (44) movable in the longitudinal direction of the casing, characterized in that said bushings (20, 22) are spaced apart longitudinally and are electrically connected by a straight main circuit (14) extending in the longitudinal direction inside the envelope (10) by forming a reactance loop close to the reactance of the loop formed by the auxiliary circuit (16). 4. Disjoncteur selon 1, 2 ou 3, caractérisé par le fait que la zone de séparation desdits contacts principaux (24, 38) à l'intérieur de l'enveloppe (10) est espacée de la zone de séparation des contacts d'arc (42, 44) pour éviter une interaction des coupures principale et auxiliaire.4. Circuit breaker according to 1, 2 or 3, characterized in that the separation zone of said main contacts (24, 38) inside the casing (10) is spaced from the separation zone of the arcing contacts (42, 44) to avoid interaction of the main and auxiliary cuts. 5. Disjoncteur selon la revendication 4, caractérisé par une cloison (56) interne de ladite enveloppe (10) interposée entre lesdites zones de séparation des contacts (24, 38; 42, 44).5. Circuit breaker according to claim 4, characterized by a partition (56) internal of said casing (10) interposed between said contact separation zones (24, 38; 42, 44). 6. Disjoncteur selon l'une quelconque des revendications précédentes, caractérisé par une chaîne cinématique (82, 80) reliant lesdits contacts mobiles (24, 44) pour séparer lesdits contacts principaux (24, 38) avant les contacts d'arc (42, 44), la course d'ouverture des contacts principaux (24, 38) étant inférieure à celle des contacts d'arc (42, 44).6. Circuit breaker according to any one of the preceding claims, characterized by a kinematic chain (82, 80) connecting said movable contacts (24, 44) to separate said main contacts (24, 38) before the arcing contacts (42, 44), the opening stroke of the main contacts (24, 38) being less than that of the arcing contacts (42, 44). 7. Disjoncteur selon 6, caractérisé en ce que lesdits contacts principaux (24, 38) comportent un contact mobile (38) pivotant, aligné en position de fermeture dans le circuit principal et dont le mouvement de pivotement est dérivé du mouvement de coulissement d'une tige de commande (46) du contact d'arc (44) mobile.7. Circuit breaker according to 6, characterized in that said main contacts (24, 38) comprise a movable contact (38) pivoting, aligned in the closed position in the main circuit and whose pivoting movement is derived from the sliding movement of a movable arcing contact (44) control rod (46). 8. Disjoncteur selon l'une quelconque des revendications précédentes, caractérisé par un ensemble à piston (68) et cylindre (72) de soufflage pneumatique associé auxdits contacts d'arc (42, 44) pour être actionné par le déplacement du contact d'arc (44) mobile et engendrer un soufflage de l'arc tiré lors de la séparation des contacts d'arc.8. Circuit breaker according to any one of the preceding claims, characterized by a piston (68) and cylinder (72) blowing assembly associated with said arcing contacts (42, 44) to be actuated by the displacement of the contact arc (44) movable and cause a blowing of the drawn arc upon separation of the arcing contacts. 9. Disjoncteur selon l'une quelconque des revendications 1 à 7, caractérisé par un moyen magnétique engendrant un champ magnétique de soufflage de l'arc tiré entre les contacts d'arc (42, 44).9. A circuit breaker according to any one of claims 1 to 7, characterized by magnetic means generating a magnetic field for blowing the arc drawn between the arcing contacts (42, 44). 10. Disjoncteur selon 8 et 9, caractérisé par le fait qu'il comporte à la fois un moyen magnétique de soufflage de l'arc et un moyen de soufflage pneumatique de l'arc.10. Circuit breaker according to 8 and 9, characterized in that it comprises both a magnetic arc blowing means and a pneumatic arc blowing means.
EP79400819A 1978-11-14 1979-11-05 Circuit breaker with separated main and shunt current paths Expired EP0011542B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7832214A FR2441916A1 (en) 1978-11-14 1978-11-14 SELF-BLOWING ELECTRIC CIRCUIT BREAKER EQUIPPED WITH A DEVICE WITH IMPROVED MAIN CONTACTS
FR7832214 1978-11-14

Publications (3)

Publication Number Publication Date
EP0011542A1 true EP0011542A1 (en) 1980-05-28
EP0011542B1 EP0011542B1 (en) 1983-07-20
EP0011542B2 EP0011542B2 (en) 1988-02-10

Family

ID=9214898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400819A Expired EP0011542B2 (en) 1978-11-14 1979-11-05 Circuit breaker with separated main and shunt current paths

Country Status (6)

Country Link
US (1) US4309581A (en)
EP (1) EP0011542B2 (en)
JP (1) JPS5568021A (en)
CS (1) CS231167B2 (en)
DE (1) DE2965950D1 (en)
FR (1) FR2441916A1 (en)

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EP0194489A2 (en) * 1985-03-12 1986-09-17 BBC Brown Boveri AG Gas blast circuit breaker
EP0239460A1 (en) * 1986-03-26 1987-09-30 Merlin Gerin Electric switch having an ameliorated dielectric strength
EP0240406A1 (en) * 1986-04-03 1987-10-07 Merlin Gerin Electrical puffer-type circuit breaker having a high dielectrical strength
FR2631735A1 (en) * 1988-05-17 1989-11-24 Merlin Gerin Device for adjusting a medium-voltage electric switch
FR2641898A1 (en) * 1989-01-17 1990-07-20 Merlin Gerin ELECTRICAL SHUT-OFF CIRCUIT BREAKER
EP0398213A1 (en) * 1989-05-19 1990-11-22 Gec Alsthom Sa Middle high-voltage circuit breaker for high nominal current
EP0450567A1 (en) * 1990-04-04 1991-10-09 Gec Alsthom Sa High- or medium voltage circuit breaker with abutting arcing contacts
FR2677168A1 (en) * 1991-06-03 1992-12-04 Merlin Gerin MEDIUM VOLTAGE CIRCUIT BREAKER WITH REDUCED CONTROL ENERGY.
FR2735277A1 (en) * 1995-06-12 1996-12-13 Schneider Electric Sa MEDIUM VOLTAGE CIRCUIT BREAKER WITH GAS INSULATION

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FR2494493A1 (en) * 1980-11-17 1982-05-21 Merlin Gerin ELECTRIC CIRCUIT BREAKER WITH SELF-BLOWING BY ARC ROTATION
US5059753A (en) * 1987-11-06 1991-10-22 Cooper Industries, Inc. SF6 puffer recloser
DE19613568A1 (en) * 1996-04-04 1997-10-09 Asea Brown Boveri Circuit breaker
US8395464B2 (en) * 2008-05-30 2013-03-12 Itron, Inc. Actuator/wedge improvements to embedded meter switch
CA2716046C (en) 2009-09-30 2016-11-08 Itron, Inc. Gas shut-off valve with feedback
EP2483638A4 (en) * 2009-09-30 2017-03-08 Itron, Inc. Utility remote disconnect from a meter reading system
US8890711B2 (en) 2009-09-30 2014-11-18 Itron, Inc. Safety utility reconnect
US9005423B2 (en) 2012-12-04 2015-04-14 Itron, Inc. Pipeline communications

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US3257532A (en) * 1962-12-17 1966-06-21 Sprecher & Schuh Ag Arc-extinguishing circuit-breakers
FR1445422A (en) * 1965-02-03 1966-07-08 Sachsenwerk Licht & Kraft Ag Electric power circuit breaker for high nominal currents
US3271548A (en) * 1963-10-11 1966-09-06 Westinghouse Electric Corp Contact constructions for circuit interrupters
CH444260A (en) * 1966-02-15 1967-09-30 Bernardovich Irany Pavel Olarmer high voltage switch
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US3671696A (en) * 1970-11-16 1972-06-20 Allis Chalmers Mfg Co Vacuum interrupter shunted with mechanical switch
FR2285700A1 (en) * 1974-09-19 1976-04-16 Alsthom Cgee Dielectric gas filled electrical circuit breaker - has arc contacts of same dia surrounding main contacts

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FR1302499A (en) * 1961-06-29 1962-08-31 Comp Generale Electricite Electric switch comprising a self-blowing cut-off device in halogenated gas
US3257532A (en) * 1962-12-17 1966-06-21 Sprecher & Schuh Ag Arc-extinguishing circuit-breakers
US3271548A (en) * 1963-10-11 1966-09-06 Westinghouse Electric Corp Contact constructions for circuit interrupters
FR1445422A (en) * 1965-02-03 1966-07-08 Sachsenwerk Licht & Kraft Ag Electric power circuit breaker for high nominal currents
GB1126362A (en) * 1965-07-06 1968-09-05 Ass Elect Ind Improvements in and relating to electric circuit breakers
FR1458334A (en) * 1965-08-18 1966-03-04 Comp Generale Electricite Switching device for high intensity currents
CH444260A (en) * 1966-02-15 1967-09-30 Bernardovich Irany Pavel Olarmer high voltage switch
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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0194489A2 (en) * 1985-03-12 1986-09-17 BBC Brown Boveri AG Gas blast circuit breaker
EP0194489A3 (en) * 1985-03-12 1989-03-15 Bbc Brown Boveri Ag Gas blast circuit breaker
EP0239460A1 (en) * 1986-03-26 1987-09-30 Merlin Gerin Electric switch having an ameliorated dielectric strength
FR2596576A1 (en) * 1986-03-26 1987-10-02 Merlin Gerin ELECTRICAL SHUT-OFF CIRCUIT BREAKER WITH IMPROVED DIELECTRIC STRENGTH
US4748304A (en) * 1986-03-26 1988-05-31 Merlin Gerin Electrical circuit breaker with improved dielectric withstand
EP0240406A1 (en) * 1986-04-03 1987-10-07 Merlin Gerin Electrical puffer-type circuit breaker having a high dielectrical strength
FR2596915A1 (en) * 1986-04-03 1987-10-09 Merlin Gerin ELECTRICAL SHUT-OFF CIRCUIT BREAKER HAVING A HIGH DIELECTRIC STRENGTH
FR2631735A1 (en) * 1988-05-17 1989-11-24 Merlin Gerin Device for adjusting a medium-voltage electric switch
US5095183A (en) * 1989-01-17 1992-03-10 Merlin Gerin Gas-blast electrical circuit breaker
EP0378950A1 (en) * 1989-01-17 1990-07-25 Merlin Gerin Pole for puffer-type electrical circuit breaker
FR2641898A1 (en) * 1989-01-17 1990-07-20 Merlin Gerin ELECTRICAL SHUT-OFF CIRCUIT BREAKER
US4996398A (en) * 1989-05-19 1991-02-26 Gec Alsthom Sa Medium tension circuit breaking having high nominal current
FR2647254A1 (en) * 1989-05-19 1990-11-23 Alsthom Gec MEDIUM VOLTAGE CIRCUIT BREAKER WITH HIGH NOMINAL CURRENT
EP0398213A1 (en) * 1989-05-19 1990-11-22 Gec Alsthom Sa Middle high-voltage circuit breaker for high nominal current
EP0450567A1 (en) * 1990-04-04 1991-10-09 Gec Alsthom Sa High- or medium voltage circuit breaker with abutting arcing contacts
FR2660792A1 (en) * 1990-04-04 1991-10-11 Alsthom Gec HIGH OR MEDIUM VOLTAGE CIRCUIT BREAKER WITH ARC-ON END CONTACTORS.
US5155314A (en) * 1990-04-04 1992-10-13 Gec Alsthom Sa Medium or high tension circuit breaker having end-to-end arcing contacts
FR2677168A1 (en) * 1991-06-03 1992-12-04 Merlin Gerin MEDIUM VOLTAGE CIRCUIT BREAKER WITH REDUCED CONTROL ENERGY.
EP0517620A1 (en) * 1991-06-03 1992-12-09 Schneider Electric Sa M.T. circuit breaker with reduced control energy
US5239150A (en) * 1991-06-03 1993-08-24 Merlin Gerin Medium voltage circuit breaker with operating mechanism providing reduced operating energy
FR2735277A1 (en) * 1995-06-12 1996-12-13 Schneider Electric Sa MEDIUM VOLTAGE CIRCUIT BREAKER WITH GAS INSULATION
EP0749139A1 (en) * 1995-06-12 1996-12-18 Schneider Electric Sa Gasinsulated M.T. circuit breaker
CN1068963C (en) * 1995-06-12 2001-07-25 施耐德电器工业公司 Medium voltage gas isolation circuit breaker

Also Published As

Publication number Publication date
FR2441916A1 (en) 1980-06-13
EP0011542B1 (en) 1983-07-20
JPS5568021A (en) 1980-05-22
FR2441916B1 (en) 1981-10-02
EP0011542B2 (en) 1988-02-10
JPH0139171B2 (en) 1989-08-18
CS231167B2 (en) 1984-10-15
DE2965950D1 (en) 1983-08-25
CS761579A2 (en) 1984-02-13
US4309581A (en) 1982-01-05

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