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EP0807945A1 - High voltage circuit breaker with resistance insertion on closing - Google Patents

High voltage circuit breaker with resistance insertion on closing Download PDF

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Publication number
EP0807945A1
EP0807945A1 EP97400884A EP97400884A EP0807945A1 EP 0807945 A1 EP0807945 A1 EP 0807945A1 EP 97400884 A EP97400884 A EP 97400884A EP 97400884 A EP97400884 A EP 97400884A EP 0807945 A1 EP0807945 A1 EP 0807945A1
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EP
European Patent Office
Prior art keywords
circuit breaker
contact
mobile
assembly
fixed
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
EP97400884A
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German (de)
French (fr)
Other versions
EP0807945B1 (en
Inventor
Michel Perret
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.)
Grid Solutions SAS
Original Assignee
GEC Alsthom T&D SA
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Publication of EP0807945A1 publication Critical patent/EP0807945A1/en
Application granted granted Critical
Publication of EP0807945B1 publication Critical patent/EP0807945B1/en
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
    • 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
    • H01H33/16—Impedances connected with contacts
    • H01H33/166—Impedances connected with contacts the impedance being inserted only while closing the switch

Definitions

  • the present invention relates to a high voltage circuit breaker comprising for each pole, a cylindrical casing filled with insulating gas inside which are arranged the cut-off members and a resistor, arranged axially, associated with means for its temporary insertion when closing the circuit breaker.
  • a first object of the invention is to provide a circuit breaker of the aforementioned type in which the means for inserting the resistor are lightened, which makes it possible to reduce the power of the control.
  • Another object of the invention is to produce a circuit breaker of the aforementioned type in which the means for inserting the resistor are of reduced volume, which makes it possible to reduce the diameter of the envelopes used.
  • the present invention relates to a circuit breaker according to the claims.
  • circuit breaker pole will be described, it being understood that the invention applies to a three-phase circuit breaker comprising three identical poles.
  • reference 1 designates an insulating envelope, for example made of ceramic, filled with a gas with good dielectric properties such as sulfur hexafluoride SF6.
  • the breaking chamber comprises a fixed assembly comprising a fixed metal cylinder 2 connected to a first outlet not shown.
  • a resistance 3 called “closing” is disposed axially in the casing 1; it consists of a stack of discs 3A surrounded by a lateral insulating sheath 4; a first end of the stack is connected to the first socket mentioned above; the other end of the stack is terminated by a metal flange 6.
  • a metal tube 7 constituting the fixed main contact of the circuit breaker; to the same cylinder 2 is fixed, by metal arms 8, a metallic tubular portion 9, the end 9A of which is made of an alloy resistant to the effects of the electric arc.
  • This tubular portion 9-9A constitutes the arcing contact, fixed, of the circuit breaker.
  • the mobile assembly of the circuit breaker comprises a circular metal flange 15 disposed perpendicular to the axis of the envelope.
  • This metal flange carries a ring of contact fingers 16 constituting the main movable contacts which cooperate with the tube 7.
  • the fingers 16 are protected by a corona hood 16A.
  • the flange is connected to two coaxial cylinders whose common axis is the axis of the envelope.
  • These cylinders, referenced 17 and 18, define a blowing volume V1 in which a fixed blowing piston, not shown, is arranged.
  • One of the cylinders, the inner cylinder 17 for example, is mechanically connected to an operating rod, not shown; the other cylinder, 18, is electrically connected by sliding contacts, not shown, to a second outlet not shown.
  • the inner cylinder 17 is extended on the other side of the flange 15 by a cylindrical portion 17A provided internally with sliding contacts 17B.
  • the cylindrical portions 17A and 20 define an annular volume V2 in which the end of a blowing nozzle 22 made of insulating material moves.
  • the nozzle 22 has, like the conventional circuit breaker nozzles, a neck 22A, but it ends in a crown 22B constituting a shoulder facilitating its sliding in volume V2.
  • a spring 24 rests on the one hand on the shoulder 22B and on the other hand on a shoulder 20A at the end of the cylindrical portion 20.
  • the nozzle 22 is secured, by a ring 26 to a metallic tubular portion 30 constituting a semi-mobile arcing contact cooperating with the fixed arcing contact 9-9A.
  • the portion 30 is terminated at one end by a contact piece 30A made of an alloy resistant to the effects of the electric arc.
  • the flange 15 has passages 15A for the passage of the blowing gas from volume V1 to volume V2 during an opening operation.
  • the circuit breaker works as follows.
  • the circuit breaker In normal operating conditions, the circuit breaker is in the configuration of Fig. 1.
  • the permanent current flows through the first socket, the cylinder 2, the tube 7, the fingers 16, the flange 15, the tube 18 and the second socket.
  • the tripping of the circuit breaker is produced by the displacement of the mobile assembly, under the action of the circuit breaker control, not shown, to the right of Fig. 1.
  • a first phase shown in Fig.2
  • the mobile assembly moved a few tens of mm to the right.
  • the semi-mobile sub-assembly constituted by the nozzle (22) and the contact arc (30-30A) remains in the position they occupied in the configuration of FIG. 1. This allows the main contacts 7 and 16 to separate, the current switching in the arcing contacts 9-9A and 30-30A. In this movement, the spring 24 is compressed.
  • the contacts 16 After an additional stroke of the moving element, the contacts 16 have passed the insertion electrode 13, and the arcing contacts 9-9A and 30-30A are about to separate, since the spring being completely compressed, the arcing contact 30-30A of the semi-mobile sub-assembly is driven by the mobile assembly.
  • the pressure in the volume V2 decreases rapidly and, under the effect of the spring, the semi-mobile sub-assembly constituted by the nozzle 22 and the arcing contact 30-30A returns to its initial position relative to the mobile assembly.
  • the circuit breaker is, in the tripped position, in the configuration of Fig. 5.
  • the voltage is held between the ends of the contacts 9A and 30A, as well as between the end of the corona hoods 16A and the electrode 13, thanks to sufficient isolation distances.
  • the distance between the end of the cover (16A) of the movable main contact (16) and the electrode (13) is less than the distance between the respective ends 9A and 30A of the arcing contacts 9 and 30. It is this feature which will allow the temporary insertion of the resistor during the closing operation of the circuit breaker.
  • a closing maneuver results in a movement to the left of the moving assembly.
  • the distance between the respective ends of the 9A and 30A of the arcing contacts becomes less than the isolation distance (Fig.7), an arc strikes between these contacts, which has the consequence of shorting the resistance 3.
  • the dimensions of the various elements of the circuit breaker and the value of the speed of movement of the mobile assembly are chosen so that the insertion time is between 8 and 10 milliseconds, which is the range prescribed by network users.
  • the mobile assembly returns to its initial position (Fig. 1).

Landscapes

  • Circuit Breakers (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Push-Button Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The circuit breaker includes an inserted resistance (3) which comprises a stack of discs (3A) surrounded by an insulating sheath (4) and terminated with a metallic flange (6). Its movement involves a fixed electrode (13) cooperating with the end of the main moving contact (16). The arc extinction nozzle (22) and semi-mobile arc contact (30A) are joined together by a ring (26) and biased by a spring (24) in the direction of separation from the fixed arc contact (9A). In the tripped position the two arc contacts are separated by a gap sufficient to ensure isolation but less than that between the fixed electrode and the main moving contact.

Description

La présente invention est relative à un disjoncteur à haute tension comprenant pour chaque pôle, une enveloppe cylindrique remplie de gaz isolant à l'intérieur de laquelle sont disposés les organes de coupure et une résistance, disposée axialement, associée à des moyens pour son insertion temporaire lors de la fermeture du disjoncteur.The present invention relates to a high voltage circuit breaker comprising for each pole, a cylindrical casing filled with insulating gas inside which are arranged the cut-off members and a resistor, arranged axially, associated with means for its temporary insertion when closing the circuit breaker.

On a décrit, dans la demande de brevet français n° 79 05 478, un disjoncteur dans la chambre de coupure duquel sont disposés une résistance et des moyens pour insérer temporairement cette résistance dans le circuit du disjoncteur lors d'une opération d'enclenchement. Ces moyens comprennent un contact solidaire de l'équipage mobile, mais mobile par rapport à ce dernier. C'est la raison pour laquelle on le désigne par contact semi-mobile. Généralement, le contact semi-mobile est une pièce de tungstène choisie massive car elle doit subir le choc d'une opération de fermeture. Ce contact présente donc une masse dont la proportion dans la masse de l'équipage mobile est importante, contribuant ainsi à augmenter la puissance de la commande du disjoncteur. Par ailleurs, le contact de fermeture est de fort encombrement, nécessitant une enveloppe de grand diamètre.There has been described in French patent application No. 79 05 478, a circuit breaker in the breaking chamber of which a resistor is arranged and means for temporarily inserting this resistor in the circuit of the circuit breaker during an engagement operation. These means include a contact integral with the mobile assembly, but mobile with respect to the latter. This is the reason why it is designated by semi-mobile contact. Generally, the semi-mobile contact is a solid piece of tungsten chosen because it must undergo the shock of a closing operation. This contact therefore has a mass, the proportion of which in the mass of the moving assembly is large, thereby contributing to increasing the power of the circuit breaker control. Furthermore, the closing contact is very large, requiring a large diameter envelope.

Or, les constructeurs recherchent tous à diminuer la puissance de la commande, de manière à diminuer le prix de revient et d'exploitation du disjoncteur.However, the manufacturers all seek to reduce the power of the control, so as to reduce the cost and operating cost of the circuit breaker.

Un premier but de l'invention est de réaliser un disjoncteur du type précité dans lequel les moyens d'insertion de la résistance sont allégés, ce qui permet de réduire la puissance de la commande.A first object of the invention is to provide a circuit breaker of the aforementioned type in which the means for inserting the resistor are lightened, which makes it possible to reduce the power of the control.

Un autre but de l'invention est de réaliser un disjoncteur du type précité dans lequel les moyens d'insertion de la résistance sont de volume réduit, ce qui permet de réduire le diamètre des enveloppes utilisées.Another object of the invention is to produce a circuit breaker of the aforementioned type in which the means for inserting the resistor are of reduced volume, which makes it possible to reduce the diameter of the envelopes used.

La présente invention a pour objet un disjoncteur selon les revendications.The present invention relates to a circuit breaker according to the claims.

L'invention sera bien comprise par la description ci-après d'un mode préféré de réalisation, en référence au dessin annexé, dans lequel:

  • la figure 1 est une vue partielle en coupe axiale d'un pôle de disjoncteur selon l'invention, représenté en position enclenchée,
  • les figures 2 à 5 sont des vues similaires du disjoncteur pendant les différentes phases d'une manoeuvre de déclenchement,
  • les figures 6 à 7 sont des vues similaires du disjoncteur montrant deux phases successives d'une opération de fermeture.
The invention will be better understood from the following description of a preferred embodiment, with reference to the appended drawing, in which:
  • FIG. 1 is a partial view in axial section of a circuit breaker pole according to the invention, shown in the engaged position,
  • FIGS. 2 to 5 are similar views of the circuit breaker during the different phases of a tripping operation,
  • Figures 6 to 7 are similar views of the circuit breaker showing two successive phases of a closing operation.

Dans ce qui suit, on décrira un pôle de disjoncteur, étant bien entendu que l'invention s'applique à un disjoncteur triphasé comrenant trois pôles identiques.In what follows, a circuit breaker pole will be described, it being understood that the invention applies to a three-phase circuit breaker comprising three identical poles.

On décrira un pôle de disjoncteur de type ouvert, mais bien entendu l'invention s'applique aux disjoncteurs à enveloppe métallique à la terre.An open type circuit breaker pole will be described, but of course the invention applies to circuit breakers with a metal shell to earth.

Dans la Fig. 1, la référence 1 désigne une enveloppe isolante, par exemple en céramique, remplie d'un gaz à bonnes propriétés diélectriques tel que l'hexafluorure de soufre SF6.In Fig. 1, reference 1 designates an insulating envelope, for example made of ceramic, filled with a gas with good dielectric properties such as sulfur hexafluoride SF6.

La chambre de coupure comprend un ensemble fixe comprenant un cylindre métallique fixe 2 relié à une première prise de courant non représentée. Une résistance 3 dite "de fermeture" est disposée axialement dans l'enveloppe 1; elle est constituée d'un empilement de disques 3A entourés d'une gaine isolante latérale 4; une première extrémité de l'empilement est relié à la première prise de courant mentionnée plus haut; l'autre extrémité de l'empilement est terminé par un flasque métallique 6.The breaking chamber comprises a fixed assembly comprising a fixed metal cylinder 2 connected to a first outlet not shown. A resistance 3 called "closing" is disposed axially in the casing 1; it consists of a stack of discs 3A surrounded by a lateral insulating sheath 4; a first end of the stack is connected to the first socket mentioned above; the other end of the stack is terminated by a metal flange 6.

Au cylindre métallique 2 est fixé un tube métallique 7 constituant le contact principal fixe du disjoncteur; au même cylindre 2 est fixé, par des bras métalliques 8, une portion tubulaire métallique 9 dont l'extrémité 9A est réalisée en un alliage résistant aux effets de l'arc électrique. Cette portion tubulaire 9-9A constitue le contact d'arc, fixe, du disjoncteur.To the metal cylinder 2 is fixed a metal tube 7 constituting the fixed main contact of the circuit breaker; to the same cylinder 2 is fixed, by metal arms 8, a metallic tubular portion 9, the end 9A of which is made of an alloy resistant to the effects of the electric arc. This tubular portion 9-9A constitutes the arcing contact, fixed, of the circuit breaker.

Au flasque 6 est fixé, de préférence par des vis 10, une pièce métallique 11 portant des bras métalliques 12 parallèles à l'axe de l'enveloppe; les bras sont de préférence au nombre de deux; à l'extrémité de ces bras est soudée une couronne métallique 13 constituant une électrode fixe pour l'insertion de la résistance à la fermeture.To the flange 6 is fixed, preferably by screws 10, a metal part 11 carrying metal arms 12 parallel to the axis of the envelope; the arms are preferably two in number; at the end of these arms is welded a metal crown 13 constituting a fixed electrode for the insertion of the resistance to closing.

L'ensemble mobile du disjoncteur comprend un flasque métallique circulaire 15 disposé perpendiculairement à l'axe de l'enveloppe.The mobile assembly of the circuit breaker comprises a circular metal flange 15 disposed perpendicular to the axis of the envelope.

Ce flasque métallique porte une couronne de doigts de contact 16 constituant les contacts principaux mobiles qui coopèrent avec le tube 7. Les doigts 16 sont protégés par un capot pare-effluves 16A.This metal flange carries a ring of contact fingers 16 constituting the main movable contacts which cooperate with the tube 7. The fingers 16 are protected by a corona hood 16A.

A l'opposé des contacts 16, le flasque est relié à deux cylindres coaxiaux dont l'axe commun est l'axe de l'enveloppe. Ces cylindres, référencés 17 et 18, définissent un volume de soufflage V1 dans lequel est disposé un piston de soufflage fixe non représenté. L'un des cylindres, le cylindre intérieur 17 par exemple, est relié mécaniquement à une tringle de manoeuvre non représentée; l'autre cylindre, 18, est relié électriquement par des contacts glissants non représentés, à une seconde prise de courant non représentée.Unlike the contacts 16, the flange is connected to two coaxial cylinders whose common axis is the axis of the envelope. These cylinders, referenced 17 and 18, define a blowing volume V1 in which a fixed blowing piston, not shown, is arranged. One of the cylinders, the inner cylinder 17 for example, is mechanically connected to an operating rod, not shown; the other cylinder, 18, is electrically connected by sliding contacts, not shown, to a second outlet not shown.

Le cylindre intérieur 17 se prolonge de l'autre côté du flasque 15 par une portion cylindrique 17A munie intérieurement de contacts glissants 17B.The inner cylinder 17 is extended on the other side of the flange 15 by a cylindrical portion 17A provided internally with sliding contacts 17B.

Une portion cylindrique 20, solidarisée au flasque 15, entoure coaxialement la portion cylindrique 17A. Les portions cylindriques 17A et 20 définissent un volume annulaire V2 dans lequel se déplace l'extrémité d'une buse de soufflage 22 en matériau isolant. La buse 22 possède, comme les buses classiques de disjoncteur, un col 22A, mais elle se termine par une couronne 22B constituant un épaulement facilitant son coulissage dans le volume V2. Un ressort 24 s'appuie d'une part sur l'épaulement 22B et d'autre part sur un épaulement 20A à l'extrémité de la portion cylindrique 20.A cylindrical portion 20, secured to the flange 15, coaxially surrounds the cylindrical portion 17A. The cylindrical portions 17A and 20 define an annular volume V2 in which the end of a blowing nozzle 22 made of insulating material moves. The nozzle 22 has, like the conventional circuit breaker nozzles, a neck 22A, but it ends in a crown 22B constituting a shoulder facilitating its sliding in volume V2. A spring 24 rests on the one hand on the shoulder 22B and on the other hand on a shoulder 20A at the end of the cylindrical portion 20.

La buse 22 est solidarisée, par une couronne 26 à une portion tubulaire métallique 30 constituant un contact d'arc semi-mobile coopérant avec le contact d'arc fixe 9-9A. La portion 30 est terminée à une extrémité par une pièce de contact 30A réalisée en un alliage résistant aux effets de l'arc électrique.The nozzle 22 is secured, by a ring 26 to a metallic tubular portion 30 constituting a semi-mobile arcing contact cooperating with the fixed arcing contact 9-9A. The portion 30 is terminated at one end by a contact piece 30A made of an alloy resistant to the effects of the electric arc.

On note que le flasque 15 comporte des passages 15A pour le passage du gaz de soufflage du volume V1 au volume V2 lors d'une opération d'ouverture.Note that the flange 15 has passages 15A for the passage of the blowing gas from volume V1 to volume V2 during an opening operation.

Le fonctionnement du disjoncteur est le suivant.The circuit breaker works as follows.

En régime de fonctionnement normal, le disjoncteur est dans la configuration de la Fig.1. Le courant permanent transite par la première prise de courant, le cylindre 2, le tube 7, les doigts 16, le flasque 15, le tube 18 et la seconde prise de courant.In normal operating conditions, the circuit breaker is in the configuration of Fig. 1. The permanent current flows through the first socket, the cylinder 2, the tube 7, the fingers 16, the flange 15, the tube 18 and the second socket.

Le déclenchement du disjopncteur est produit par le déplacement de l'ensemble mobile, sous l'action de la commande du disjoncteur, non représentée, vers la droite de la Fig.1.The tripping of the circuit breaker is produced by the displacement of the mobile assembly, under the action of the circuit breaker control, not shown, to the right of Fig. 1.

Dans une première phase, représentée dans la Fig.2, l'ensemble mobile s'est déplacé de quelques dizaines de mm vers la droite. Par inertie, et aussi en raison de la montée de la pression dans le volume V2 derrière la couronne 22B, due à la compression du gaz dans le volume V1, le sous-ensemble semi-mobile constitué par la buse (22) et le contact d'arc (30-30A) reste dans la position qu'ils occupaient dans la configuration de la Fig. 1. Ceci permet aux contacts principaux 7 et 16 de se séparer, le courant commutant dans les contacts d'arc 9-9A et 30-30A. Dans ce mouvement, le ressort 24 est comprimé.In a first phase, shown in Fig.2, the mobile assembly moved a few tens of mm to the right. By inertia, and also due to the rise in pressure in the volume V2 behind the crown 22B, due to the compression of the gas in the volume V1, the semi-mobile sub-assembly constituted by the nozzle (22) and the contact arc (30-30A) remains in the position they occupied in the configuration of FIG. 1. This allows the main contacts 7 and 16 to separate, the current switching in the arcing contacts 9-9A and 30-30A. In this movement, the spring 24 is compressed.

Après une course supplémentaire de l'équipage mobile, les contacts 16 ont dépassé l'électrode d'insertion 13, et les contacts d'arc 9-9A et 30-30A sont sur le point de se séparer, puisque le ressort étant complètement comprimé, le contact d'arc 30-30A du sous-ensemble semi-mobile est entraîné par l'ensemble mobile.After an additional stroke of the moving element, the contacts 16 have passed the insertion electrode 13, and the arcing contacts 9-9A and 30-30A are about to separate, since the spring being completely compressed, the arcing contact 30-30A of the semi-mobile sub-assembly is driven by the mobile assembly.

Après la séparation des contacts d'arc, (Fig. 4), un arc jaillit entre ces contacts, mais il est rapidement éteint par le soufflage énergique à travers la buse 22.After the separation of the arcing contacts (Fig. 4), an arc erupts between these contacts, but it is quickly extinguished by the forceful blowing through the nozzle 22.

La pression dans le volume V2 décroît rapidement et, sous l'effet du ressort, le sous-ensemble semi-mobile constitué par la buse 22 et le contact d'arc 30-30A reprend sa position initiale par rapport à l'ensemble mobile.The pressure in the volume V2 decreases rapidly and, under the effect of the spring, the semi-mobile sub-assembly constituted by the nozzle 22 and the arcing contact 30-30A returns to its initial position relative to the mobile assembly.

En fin de manoeuvre d'ouverture, le disjoncteur est, en position déclenchée, dans la configuration de la Fig.5. La tension est tenue entre les extrémités des contacts 9A et 30A, ainsi qu'entre l'extrémité des capots pare-effluves 16A et l'électrode 13, grâce à des distances d'isolement suffisantes. On note que, dans la configuration déclenchée du disjoncteur (Fig.5), la distance entre l'extrémité du capot (16A) du contact principal mobile (16) et l'électrode (13) est inférieure à la distance entre les extrémités respectives 9A et 30A des contacts d'arc 9 et 30. C'est cette particularité qui va permettre l'insertion temporaire de la résistance lors de l'opération de fermeture du disjoncteur.At the end of the opening operation, the circuit breaker is, in the tripped position, in the configuration of Fig. 5. The voltage is held between the ends of the contacts 9A and 30A, as well as between the end of the corona hoods 16A and the electrode 13, thanks to sufficient isolation distances. Note that, in the tripped configuration of the circuit breaker (Fig. 5), the distance between the end of the cover (16A) of the movable main contact (16) and the electrode (13) is less than the distance between the respective ends 9A and 30A of the arcing contacts 9 and 30. It is this feature which will allow the temporary insertion of the resistor during the closing operation of the circuit breaker.

Une manoeuvre de fermeture se traduit par un déplacement vers la gauche de l'équipage mobile.A closing maneuver results in a movement to the left of the moving assembly.

C'est le capot pare-effluves 16A qui s'approche le premier de l'électrode d'insertion 13. Lorsque la distance qui sépare ces deux pièces devient inférieure à la distance d'isolement (Fig.6), un arc s'amorce entre l'électrode 13 et le capot pare-effluves 16A, ce qui a pour conséquence d'insérer la résistance 3 en série dans le circuit du disjoncteur.It is the corona hood 16A which first approaches the insertion electrode 13. When the distance separating these two parts becomes less than the isolation distance (Fig. 6), an arc s' initiation between the electrode 13 and the corona hood 16A, which has the effect of inserting the resistor 3 in series in the circuit breaker.

Lorsque, l'ensemble mobile poursuivant sa course, la distance entre les extrémités respectives des 9A et 30A des contacts d'arc devient inférieure à la distance d'isolement (Fig.7), un arc s'amorce entre ces contacts, ce qui a pour conséquence de court-circuiter la résistance 3. Les dimensions des divers éléments du disjoncteur et la valeur de la vitesse de déplacement de l'ensemble mobile sont choisis pour que la durée d'insertion soit comprise entre 8 et 10 millisecondes, ce qui est la fourchette prescrite par les utilisateurs de réseaux.When, the moving assembly continuing its travel, the distance between the respective ends of the 9A and 30A of the arcing contacts becomes less than the isolation distance (Fig.7), an arc strikes between these contacts, which has the consequence of shorting the resistance 3. The dimensions of the various elements of the circuit breaker and the value of the speed of movement of the mobile assembly are chosen so that the insertion time is between 8 and 10 milliseconds, which is the range prescribed by network users.

Poursuivant se course, l'ensemble mobile retrouve sa position initiale (Fig.1).Continuing to run, the mobile assembly returns to its initial position (Fig. 1).

Les moyens d'insertion de la résistance à la fermeture qui viennent d'être décrits permettent de résoudre les problèmes techniques énoncés dans le préambule du présent mémoire:

  • réduire la masse des éléments liés à l'ensemble mobile, ce qui est réalisé puisque les masses supplémentaires viennent seulement de l'allongement de la buse 22, des contacts glissants 18 et du ressort 24, ce qui, au total, est très faible.
  • diminuer l'encombrement. Ce problème est résolu puisque l'électrode d'insertion est de diamètre inférieur au capot pare-effluves 16A de la couronne des doigts de contacts principaux 16.
The means of inserting the closing resistance which have just been described make it possible to solve the technical problems stated in the preamble to this memo:
  • reduce the mass of the elements linked to the mobile assembly, which is achieved since the additional masses only come from the extension of the nozzle 22, the sliding contacts 18 and the spring 24, which, in total, is very small.
  • reduce clutter. This problem is solved since the insertion electrode is of smaller diameter than the corona hood 16A of the crown of the main contact fingers 16.

Claims (2)

Disjoncteur à haute tension comprenant pour chaque pôle une enveloppe contenant un contact principal fixe (7), un contact d'arc fixe (9-9A) et une résistance fixe (3) destinée à être insérée momentanémént à la fermeture du disjoncteur, les contacts fixes (7, 9-9A) et une première borne de la résistance (3) étant reliés à une première prise de courant, une seconde borne de la résistance (3) étant reliée par des bras (12) à une électrode d'insertion (13), l'enveloppe contenant en outre un ensemble mobile comprenant un contact principal (16), un premier (17) et un second (18) cylindres coaxiaux mécaniquement solidaires définissant un volume de soufflage (V1) de soufflage, l'un desdits cylindres étant relié électriquement à une seconde prise de courant, l'ensemble mobile étant reliée à une commande, ledit ensemble mobile comprenant en outre une buse de soufflage (22) et un contact d'arc (30-30A), caractérisé en ce que la buse (22) et le contact d'arc (30-30A) de l'ensemble mobile sont solidarisés et constituent un sous-ensemble, dit sous-ensemble semi-mobile, mobile par rapport au reste de l'ensemble mobile, l'électrode d'insertion (13) étant disposée dans le prolongement du contact principal fixe (7) et à une distance de l'extrémité du contact principal mobile (16) supérieure à la distance d'isolement lorsque le disjoncteur est en position déclenchée, le sous-ensemble semi-mobile étant rappelé par un ressort (24) dans le sens qui tend à l'éloigner du contact d'arc fixe (9-9A), la distance entre les extrémités des contacts d'arc (9A, 30A) étant, lorsque le disjoncteur est en position déclenchée, supérieure à la distance d'isolement, mais inférieure à la distance précitée entre l'électrode (13) et l'extrémité du contact permanent mobile (16).High voltage circuit breaker comprising for each pole an enclosure containing a fixed main contact (7), a fixed arcing contact (9-9A) and a fixed resistor (3) intended to be inserted momentarily when the circuit breaker closes, the contacts fixed (7, 9-9A) and a first terminal of the resistor (3) being connected to a first socket, a second terminal of the resistor (3) being connected by arms (12) to an insertion electrode (13), the casing further containing a mobile assembly comprising a main contact (16), a first (17) and a second (18) mechanically integral coaxial cylinders defining a blowing volume (V1) of blowing, one said cylinders being electrically connected to a second socket, the mobile assembly being connected to a control, said mobile assembly further comprising a blowing nozzle (22) and an arcing contact (30-30A), characterized in that that the nozzle (22) and the arcing contact (30-30 A) of the mobile assembly are joined together and constitute a sub-assembly, called a semi-mobile sub-assembly, which is mobile relative to the rest of the mobile assembly, the insertion electrode (13) being arranged in the extension of the fixed main contact (7) and at a distance from the end of the movable main contact (16) greater than the isolation distance when the circuit breaker is in the tripped position, the semi-mobile sub-assembly being returned by a spring (24 ) in the direction which tends to move it away from the fixed arcing contact (9-9A), the distance between the ends of the arcing contacts (9A, 30A) being, when the circuit breaker is in the tripped position, greater than the isolation distance, but less than the aforementioned distance between the electrode (13) and the end of the movable permanent contact (16). Disjoncteur selon la revendication 1, caractérisé en ce que le contact d'arc (30-30A) de l'ensemble mobile est un tube coulissant dans le premier cylindre coaxial (17) auquel il est relié électriquement par un contact glissant (18).Circuit breaker according to claim 1, characterized in that the arcing contact (30-30A) of the mobile assembly is a tube sliding in the first coaxial cylinder (17) to which it is electrically connected by a sliding contact (18).
EP97400884A 1996-05-13 1997-04-21 High voltage circuit breaker with resistance insertion on closing Expired - Lifetime EP0807945B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9605910A FR2748597B1 (en) 1996-05-13 1996-05-13 HIGH VOLTAGE CIRCUIT BREAKER WITH CLOSING RESISTANCE INSERTION
FR9605910 1996-05-13

Publications (2)

Publication Number Publication Date
EP0807945A1 true EP0807945A1 (en) 1997-11-19
EP0807945B1 EP0807945B1 (en) 2003-03-05

Family

ID=9492065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400884A Expired - Lifetime EP0807945B1 (en) 1996-05-13 1997-04-21 High voltage circuit breaker with resistance insertion on closing

Country Status (8)

Country Link
US (1) US5841614A (en)
EP (1) EP0807945B1 (en)
AT (1) ATE233943T1 (en)
BR (1) BR9703144A (en)
CA (1) CA2206950C (en)
DE (1) DE69719401T2 (en)
ES (1) ES2191156T3 (en)
FR (1) FR2748597B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1837889A2 (en) * 2006-03-24 2007-09-26 Siemens Aktiengesellschaft Interrupter unit with switch-on resistance

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2770678B1 (en) * 1997-10-30 1999-12-31 Gec Alsthom T & D Sa GENERATOR CIRCUIT BREAKER WITH SINGLE MECHANICAL CONTROL
FR2783088B1 (en) * 1998-09-09 2000-10-13 Alstom Technology SWITCH WITH A LONG-TERM INSERTION RESISTOR INSERTION SYSTEM
FR2793945B1 (en) * 1999-05-17 2001-06-22 Alstom HIGH VOLTAGE DISCONNECTOR WITH MOBILE CONTACT MOVED AT HIGH SPEED
US7078643B2 (en) * 2003-12-15 2006-07-18 Rostron Joseph R Capacitor switch with internal retracting impedance contactor
US7736529B2 (en) * 2007-10-12 2010-06-15 Honeywell International Inc Azeotrope-like compositions containing sulfur hexafluoride and uses thereof
EP2387057B1 (en) * 2010-05-12 2012-05-23 ABB Technology AG Gas-isolated high voltage switch
US8431842B2 (en) * 2011-01-06 2013-04-30 Tai-Her Yang Sequential switching device with surrounding distinctive joint points structure
KR101797021B1 (en) * 2014-10-23 2017-11-13 엘에스산전 주식회사 Supporting Structure of Closing Resistor of Gas Insulated Switchgear
CN107706044A (en) * 2017-10-26 2018-02-16 平高集团有限公司 A kind of moving contact component and arc-extinguishing chamber of circuit breaker, breaker
EP3748658B1 (en) * 2019-06-04 2022-03-23 General Electric Technology GmbH Contact arrangement for pre-insertion resistor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450501A1 (en) * 1979-03-02 1980-09-26 Alsthom Cgee CLOSING RESISTANCE INSERTION DEVICE OF A SWITCHING APPARATUS
DE3411445A1 (en) * 1984-02-06 1985-08-08 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau HIGH VOLTAGE SWITCH

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663456B1 (en) * 1990-06-14 1996-04-26 Alsthom Gec CIRCUIT BREAKER WITH INCORPORATED VARISTANCE.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450501A1 (en) * 1979-03-02 1980-09-26 Alsthom Cgee CLOSING RESISTANCE INSERTION DEVICE OF A SWITCHING APPARATUS
DE3411445A1 (en) * 1984-02-06 1985-08-08 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau HIGH VOLTAGE SWITCH

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1837889A2 (en) * 2006-03-24 2007-09-26 Siemens Aktiengesellschaft Interrupter unit with switch-on resistance
EP1837889A3 (en) * 2006-03-24 2007-11-28 Siemens Aktiengesellschaft Interrupter unit with switch-on resistance

Also Published As

Publication number Publication date
CA2206950A1 (en) 1997-11-13
DE69719401D1 (en) 2003-04-10
FR2748597B1 (en) 1998-06-12
EP0807945B1 (en) 2003-03-05
US5841614A (en) 1998-11-24
FR2748597A1 (en) 1997-11-14
ATE233943T1 (en) 2003-03-15
DE69719401T2 (en) 2004-01-15
ES2191156T3 (en) 2003-09-01
BR9703144A (en) 1998-06-23
CA2206950C (en) 2000-02-29

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