EP0424281B1 - Operating device for a high-voltage multipole circuit breaker - Google Patents

Operating device for a high-voltage multipole circuit breaker Download PDF

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Publication number
EP0424281B1
EP0424281B1 EP19900420427 EP90420427A EP0424281B1 EP 0424281 B1 EP0424281 B1 EP 0424281B1 EP 19900420427 EP19900420427 EP 19900420427 EP 90420427 A EP90420427 A EP 90420427A EP 0424281 B1 EP0424281 B1 EP 0424281B1
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EP
European Patent Office
Prior art keywords
circuit breaker
crank
shaft
casing
poles
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
EP19900420427
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German (de)
French (fr)
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EP0424281A1 (en
Inventor
Odile Filleau
François Scarponi
Maurice Pons
Antoine Masciave
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Schneider Electric SE
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Schneider Electric SE
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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
    • H01H33/022—Details particular to three-phase circuit breakers
    • 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
    • H01H33/008—Pedestal mounted switch gear combinations
    • 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
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • H01H33/561—Gas reservoirs composed of different independent pressurised compartments put in communication only after their assemblage

Definitions

  • a circuit breaker of the kind mentioned is described in document EP-A-94,858.
  • the rotary transmission shaft is subdivided into several aligned sections extending in the center distance of the poles, being secured to the next section by the hub of the crank in which the splined ends abutted abutting successive sections.
  • the three enclosures of the poles communicate with each other by intermediate cylindrical casing elements, allowing a single dynamic seal.
  • Such a control device is perfectly suitable for a circuit breaker having a specific operating voltage, for example 72 kV.
  • the object of the invention is to improve a circuit breaker with separate poles to facilitate the modification of the spacing of the poles as a function of the operating voltage.
  • the transmission system between the intermediate shaft and each half-shaft comprises a second crank carried by the half-shaft outside the casing, and connected by a connecting rod to a third crank associated with the common intermediate shaft, the deflection of said system taking place at each casing in a plane perpendicular to the longitudinal direction of the beam.
  • the intermediate shaft is rotatably mounted in three bearings arranged in flanges integral with the casings.
  • the pole spacing can be easily adjusted depending on the operating voltage, by positioning the attachment area of the individual casing of each pole or its support column on the horizontal beam. All parts of the control device remain standard, with the exception of the intermediate shaft, the length of which must be adapted to that of the beam.
  • the open box of the beam is in connection with the external environment, and the internal communication of the poles takes place by means of a piping system connecting the various casings to ensure a uniform distribution of the pressure of insulating gas.
  • a three-phase high-voltage circuit breaker 10 has three spaced-apart poles 12, 14, 16, arranged in line on a metal frame 18, which is constituted by a hollow horizontal beam 20 in the form of a box, resting on a foot 22 central with interposition of the box 24 containing the control mechanism 26.
  • the base of the foot 22 is sealed to the ground 28 by fixing means 30 (fig.1 and 2).
  • Each pole comprises a sealed enclosure filled with insulating gas, in particular sulfur hexafloride.
  • the enclosure contains a system of separable contacts, and a device for blowing the arc, in particular self-expanding with or without a rotating arc, or self-compressing by piston.
  • the movable contact of the contact system is integral with an actuating rod 32 (fig. 3), which is axially coupled to the mechanism 26 by a removable mechanical connection 34, in particular of the screw type.
  • each support column 13, 15, 17 is sealingly fixed to a support plate 36 of a fixed casing 38 housing a first transmission crank 40, on which the threaded rod 42 of the connection is articulated mechanical 34.
  • the three identical casings 38 are distributed at predetermined intervals corresponding to the spacing of the poles 12, 14, 16, and the three cranks 40 struggle in a plane perpendicular to the longitudinal direction of the beam 20.
  • the internal volume of each casing 38 communicates with the corresponding pole, and is filled with SF6 gas.
  • a distribution pipe 44 connected to a common tank 46, which is connected to a pressure switch 48.
  • the volumes of the three poles 12, 14, 16 communicate with each other via the three pipes 44 and the common tank 46. This results in a uniform pressure of SF6 in the poles. Any abnormal drop in pressure is signaled by the pressure switch 48.
  • the mechanism 26 is a mechanical control of the type described in French patent No. 1,586,097, and comprises a closing spring (not shown) capable of arming a pair of trigger springs 50 during the closing operation of the poles 12, 14, 16.
  • the mechanism 26 includes latching locks in the open and closed position allowing an engagement and triggering command, in particular from a distance.
  • the mechanism 26 can also be hydraulically, pneumatically or electrically controlled.
  • the transmission device 52 comprises a shaft intermediate 54 carrying in the central region a pair of opening control cranks 56, and a pair of closing control cranks 58 actuated respectively by connecting rods 60, 62 cooperating with the triggering and engagement springs of the mechanism 26
  • the intermediate shaft 54 extends in the longitudinal direction of the beam 20, and is mounted for rotation in three aligned bearings 64, formed in flanges 66 fixed to the three casings 38.
  • the symmetrical arrangement of the two trigger springs 50 makes it possible to reduce the mechanical stresses of the shaft 54.
  • each individual half-shaft 68 carries a second transmission crank 72 connected by a connecting rod 74 to a third transmission crank 76 associated with the common intermediate shaft 54.
  • the cranks 72, 76 and the connecting rod 74 form an individual transmission system 71 for each pole.
  • All the parts of the transmission device 52 are standard, independently of the inter-phase voltage, with the exception of the beam 20 and the intermediate shaft 54.
  • the box of the beam 20 is open, and communicates with the outside environment.
  • the internal gas communication of the poles 12, 14, 16 takes place for the pipes 44 and the reservoir 46 for distributing the internal pressure of SF6, which is permanently controlled by the pressure switch 48.
  • Figures 4 and 5 show the arrangement of the circuit breaker 10 for a network voltage greater than that of Figure 1.
  • the spacing between poles 12, 14, 16 has been increased as well as the length of the horizontal beam 20.
  • chassis 18 The mechanical rigidity of chassis 18 is reinforced by a pair of oblique tie rods 80, 82 extending between the ends of the horizontal beam 20, and the base of the central leg 22.
  • the reinforcement of the chassis 18 is carried out by means of two trestles 84, 86 of ends resting directly on the ground on either side of the central foot 22.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Circuit Breakers (AREA)
  • Gas-Insulated Switchgears (AREA)

Description

L'invention est relative à un disjoncteur électrique multipolaire à haute tension, ayant une pluralité de pôles espacés, disposés en ligne sur un châssis métallique avec un écartement prédéterminé, chaque pôle ayant une enceinte en forme de colonne, remplie d'un gaz à rigidité diélectrique élevée, notamment de l'hexafluorure de soufre, et renfermant un système de contacts séparables ayant un contact fixe et un contact mobile accouplé à une tige d'actionnement, et un dispositif d'extinction de l'arc, le disjoncteur étant actionné par un dipositif de commande comportant :

  • un mécanisme de commande, logé dans un coffret solidaire du châssis ,
  • un dispositif de transmission agencé à l'intérieur d'une poutre horizontale conformée en caisson creux, et comprenant un arbre rotatif s'étendant selon la direction longitudinale de la poutre pour transmettre l'énergie d'ouverture ou de fermeture du mécanisme aux tiges d'actionnement des pôles,
  • une première manivelle de transmission logée à l'intérieur d'un carter individuel étanche, prévu à la base de chaque pôle, dont l'enceinte communique avec le volume interne dudit carter,
  • et une liaison mécanique pour relier cinématiquement la première manivelle à la tige d'actionnement du contact mobile correspondant.
The invention relates to a high-voltage multipolar electrical circuit breaker, having a plurality of spaced apart poles, arranged in line on a metal frame with a predetermined spacing, each pole having a column-shaped enclosure, filled with a gas with rigidity. high dielectric, in particular sulfur hexafluoride, and containing a separable contact system having a fixed contact and a movable contact coupled to an actuating rod, and an arc extinguishing device, the circuit breaker being actuated by a control device comprising:
  • a control mechanism, housed in a box secured to the chassis,
  • a transmission device arranged inside a horizontal beam shaped as a hollow box, and comprising a rotary shaft extending in the longitudinal direction of the beam to transmit the opening or closing energy of the mechanism to the rods d actuation of the poles,
  • a first transmission crank housed inside a sealed individual casing, provided at the base of each pole, the enclosure of which communicates with the internal volume of said casing,
  • and a mechanical connection for kinematically connecting the first crank to the actuating rod of the corresponding movable contact.

Un disjoncteur du genre mentionné est décrit dans le document EP-A-94.858. L'arbre rotatif de transmission est subdivisé en plusieurs tronçons alignés s'étendant dans l'entraxe des pôles, en étant solidarisés au tronçon suivant par le moyeu de la manivelle dans lequel s'emboîtent les extrémités cannelées aboutées des tronçons successifs. Les trois enceintes des pôles communiquent entre elles par des éléments cylindriques intermédiaires de carter, autorisant une seule étanchéité dynamique. Un tel dispositif de commande convient parfaitement pour un disjoncteur ayant une tension d'utilisation spécifique, par exemple 72 kV. Pour réaliser une gamme de disjoncteurs couvrant une plage de tensions, il est par contre nécessaire de modifier la longueur des tronçons d'arbre et de carter, en fonction de l'écartement entre pôles imposé par la rigidité diélectrique du milieu environnant, ce qui pose des problèmes de standardisation et de stockage lors de la fabrication.A circuit breaker of the kind mentioned is described in document EP-A-94,858. The rotary transmission shaft is subdivided into several aligned sections extending in the center distance of the poles, being secured to the next section by the hub of the crank in which the splined ends abutted abutting successive sections. The three enclosures of the poles communicate with each other by intermediate cylindrical casing elements, allowing a single dynamic seal. Such a control device is perfectly suitable for a circuit breaker having a specific operating voltage, for example 72 kV. In order to produce a range of circuit breakers covering a range of voltages, it is however necessary to modify the length of the shaft and casing sections, as a function of the spacing between poles imposed by the dielectric strength of the surrounding medium, which poses standardization and storage problems during manufacturing.

L'objet de l'invention consiste à améliorer un disjoncteur à pôles séparés pour faciliter la modification de l'écartement des pôles en fonction de la tension d'utilisation.The object of the invention is to improve a circuit breaker with separate poles to facilitate the modification of the spacing of the poles as a function of the operating voltage.

Le disjoncteur selon l'invention est caractérisé en ce que :

  • la première manivelle de chaque pôle est portée par un demi-arbre rotatif traversant à étanchéité le carter selon la direction longitudinale de la poutre ,
  • le demi-arbre est accouplé à l'arbre intermédiaire par un système de transmission à bielle-manivelles, dont le débattement s'effectue au niveau de chaque carter dans un plan perpendiculaire à la direction longitudinale de la poutre ,
  • une plaque d'appui est positionnée en un endroit prédéterminé de la poutre pour le montage du pôle correspondant ou de sa colonne support,
  • le mécanisme est accouplé à une manivelle de commande d'ouverture, et à une manivelle de commande de fermeture montées sur l'arbre intermédiaire au voisinage de la zone médiane de la poutre.
The circuit breaker according to the invention is characterized in that:
  • the first crank of each pole is carried by a rotary half-shaft sealingly passing the casing in the longitudinal direction of the beam,
  • the half-shaft is coupled to the intermediate shaft by a transmission system with connecting rods and cranks, the movement of which takes place at each casing in a plane perpendicular to the longitudinal direction of the beam,
  • a support plate is positioned at a predetermined location on the beam for mounting the corresponding pole or its support column,
  • the mechanism is coupled to an opening control crank, and to a closing control crank mounted on the intermediate shaft in the vicinity of the central region of the beam.

Le système de transmission entre l'arbre intermédiaire et chaque demi-arbre comporte une deuxième manivelle portée par le demi-arbre à l'extérieur du carter, et reliée par une bielle de liaison à une troisième manivelle associée à l'arbre intermédiaire commun, le débattement dudit système s'effectuant au niveau de chaque carter dans un plan perpendiculaire à la direction longitudinale de la poutre.The transmission system between the intermediate shaft and each half-shaft comprises a second crank carried by the half-shaft outside the casing, and connected by a connecting rod to a third crank associated with the common intermediate shaft, the deflection of said system taking place at each casing in a plane perpendicular to the longitudinal direction of the beam.

L'arbre intermédiaire est monté à rotation dans trois paliers agencés dans des flasques solidaires des carters.The intermediate shaft is rotatably mounted in three bearings arranged in flanges integral with the casings.

L'écartement des pôles peut être facilement ajusté en fonction de la tension d'utilisation, par le positionnement de la zone de fixation du carter individuel de chaque pôle ou de sa colonne support sur la poutre horizontale. Toutes les pièces du dispositif de commande restent standard, à l'exception de l'arbre intermédiaire dont la longueur doit être adaptée à celle de la poutre.The pole spacing can be easily adjusted depending on the operating voltage, by positioning the attachment area of the individual casing of each pole or its support column on the horizontal beam. All parts of the control device remain standard, with the exception of the intermediate shaft, the length of which must be adapted to that of the beam.

Le caisson ouvert de la poutre est en liaison avec le milieu extérieur, et la communication interne des pôles s'opère au moyen d'un système de tuyauterie reliant les différents carters pour assurer une répartition uniforme de la pression de gaz isolant.The open box of the beam is in connection with the external environment, and the internal communication of the poles takes place by means of a piping system connecting the various casings to ensure a uniform distribution of the pressure of insulating gas.

D'autres avantages et caractéristiques ressortiront plus clairement de la description 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 en élévation d'un disjoncteur équipé du dispositif de commande selon l'invention;
  • la figure 2 montre une vue de profil de la figure 1;
  • la figure 3 représente une vue en perspective du dispositif de commande, l'une des colonnes supports d'un pôle étant montrée partiellement en position démontée;
  • les figures 4 et 5 sont des vues identiques aux figures 1 et 2 pour un disjoncteur de tension d'utilisation différente, et à renforcement du châssis;
  • les figures 6 et 7 montrent des vues identiques aux figures 4 et 5 d'une variante de réalisation du châssis de support du disjoncteur.
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 an elevational view of a circuit breaker equipped with the control device according to the invention;
  • Figure 2 shows a side view of Figure 1;
  • 3 shows a perspective view of the control device, one of the support columns of a pole being shown partially in the disassembled position;
  • Figures 4 and 5 are views identical to Figures 1 and 2 for a circuit breaker of different use voltage, and reinforcement of the chassis;
  • Figures 6 and 7 show views identical to Figures 4 and 5 of an alternative embodiment of the circuit breaker support frame.

Sur les figures, un disjoncteur 10 triphasé à haute tension comporte trois pôles 12, 14, 16 espacés, disposés en ligne sur un châssis 18 métallique, lequel est constitué par une poutre 20 horizontale creuse en forme de caisson, prenant appui sur un pied 22 central avec interposition du coffret 24 renfermant le mécanisme de commande 26. La base du pied 22 est scellée au sol 28 par des moyens de fixation 30 (fig.1 et 2).In the figures, a three-phase high-voltage circuit breaker 10 has three spaced-apart poles 12, 14, 16, arranged in line on a metal frame 18, which is constituted by a hollow horizontal beam 20 in the form of a box, resting on a foot 22 central with interposition of the box 24 containing the control mechanism 26. The base of the foot 22 is sealed to the ground 28 by fixing means 30 (fig.1 and 2).

Les pôles 12,14,16 sont portés par des colonnes supports 13, 15, 17 qui reposent directement sur la poutre 20. Chaque pôle comporte une enceinte étanche remplie de gaz isolant, notamment de l'hexaflorure de soufre. L'enceinte renferme un système de contacts séparables, et un dispositif de soufflage de l'arc, notamment à autoexpansion avec ou sans arc tournant, ou à autocompression par pistonnage. Le contact mobile du système de contacts est solidaire d'une tige d'actionnement 32 (fig. 3), laquelle est accouplée axialement au mécanisme 26 par une liaison mécanique 34 démontable, notamment du type à vis.The poles 12, 14, 16 are carried by support columns 13, 15, 17 which rest directly on the beam 20. Each pole comprises a sealed enclosure filled with insulating gas, in particular sulfur hexafloride. The enclosure contains a system of separable contacts, and a device for blowing the arc, in particular self-expanding with or without a rotating arc, or self-compressing by piston. The movable contact of the contact system is integral with an actuating rod 32 (fig. 3), which is axially coupled to the mechanism 26 by a removable mechanical connection 34, in particular of the screw type.

La base de chaque colonne support 13, 15, 17 est fixée à étanchéité sur une plaque d'appui 36 d'un carter 38 fixe de logement d'une première manivelle 40 de transmission, sur laquelle est articulée la tige filetée 42 de la liaison mécanique 34. A l'intérieur de la poutre 20, les trois carters 38 identiques sont répartis à intervalles prédéterminés correspondant à l'écartement des pôles 12, 14, 16, et les trois manivelles 40 se débattent dans un plan perpendiculaire à la direction longitudinale de la poutre 20. Le volume interne de chaque carter 38 communique avec le pôle correspondant, et est rempli par du gaz SF6. A l'opposé de la plaque d'appui 36 de chaque carter 38, est agencé un tuyau 44 de répartition connecté à un réservoir 46 commun, lequel est relié à un manostat 48. Les volumes des trois pôles 12, 14, 16 communiquent entre eux par l'intermédiaire des trois tuyaux 44 et du réservoir 46 commun. Il en résulte une pression uniforme de SF6 dans les pôles. Toute baisse anormale de pression est signalée par le manostat 48.The base of each support column 13, 15, 17 is sealingly fixed to a support plate 36 of a fixed casing 38 housing a first transmission crank 40, on which the threaded rod 42 of the connection is articulated mechanical 34. Inside the beam 20, the three identical casings 38 are distributed at predetermined intervals corresponding to the spacing of the poles 12, 14, 16, and the three cranks 40 struggle in a plane perpendicular to the longitudinal direction of the beam 20. The internal volume of each casing 38 communicates with the corresponding pole, and is filled with SF6 gas. Opposite the support plate 36 of each casing 38, there is arranged a distribution pipe 44 connected to a common tank 46, which is connected to a pressure switch 48. The volumes of the three poles 12, 14, 16 communicate with each other via the three pipes 44 and the common tank 46. This results in a uniform pressure of SF6 in the poles. Any abnormal drop in pressure is signaled by the pressure switch 48.

Le mécanisme 26 est une commande mécanique du type décrit dans le brevet français N° 1.586.097, et comporte un ressort de fermeture (non représenté) capable d'armer une paire de ressorts de déclenchement 50 au cours de la manoeuvre de fermeture des pôles 12, 14, 16. Le mécanisme 26 comporte des verrous d'accrochage en position d'ouverture et de fermeture permettant une commande d'enclenchement et de déclenchement, notamment à distance.The mechanism 26 is a mechanical control of the type described in French patent No. 1,586,097, and comprises a closing spring (not shown) capable of arming a pair of trigger springs 50 during the closing operation of the poles 12, 14, 16. The mechanism 26 includes latching locks in the open and closed position allowing an engagement and triggering command, in particular from a distance.

Le mécanisme 26 peut également être, à commande hydraulique, pneumatique ou électrique.The mechanism 26 can also be hydraulically, pneumatically or electrically controlled.

A l'intérieur du caisson de la poutre 20 se trouve également un dispositif de transmission 52 agencé entre le mécanisme de commande 26, et les trois tiges d'actionnement 32 des pôles 12, 14, 16. Le dispositif de transmission 52 comporte un arbre intermédiaire 54 portant dans la zone médiane une paire de manivelles de commande d'ouverture 56, et une paire de manivelles de commande de fermeture 58 actionnées respectivement par des bielles 60, 62 coopérant avec les ressorts de déclenchement 50 et d'enclenchement du mécanisme 26. L'arbre intermédaire 54 s'étend dans la direction longitudinale de la poutre 20, et est monté à rotation dans trois paliers 64 alignés, ménagés dans des flasques 66 fixés aux trois carters 38.Inside the box of the beam 20 is also a transmission device 52 arranged between the control mechanism 26, and the three actuating rods 32 of the poles 12, 14, 16. The transmission device 52 comprises a shaft intermediate 54 carrying in the central region a pair of opening control cranks 56, and a pair of closing control cranks 58 actuated respectively by connecting rods 60, 62 cooperating with the triggering and engagement springs of the mechanism 26 The intermediate shaft 54 extends in the longitudinal direction of the beam 20, and is mounted for rotation in three aligned bearings 64, formed in flanges 66 fixed to the three casings 38.

La disposition symétrique des deux ressorts de déclenchement 50 permet de diminuer les contraintes mécaniques de l'arbre 54.The symmetrical arrangement of the two trigger springs 50 makes it possible to reduce the mechanical stresses of the shaft 54.

La première manivelle 40 de transmission à l'intérieur de chaque carter 38 est portée par un demi-arbre 68 rotatif traversant le carter 38 avec interposition d'un joint 70 dynamique d'étanchéité tournante, du type décrit dans le brevet français N° 2 267 498. A l'extérieur du carter 38, chaque demi-arbre 68 individuel porte une deuxième manivelle 72 de transmission reliée par une bielle 74 à une troisième manivelle 76 de transmission associée à l'arbre intermédiaire 54 commun. Les manivelles 72, 76 et la bielle 74 forment un système de transmission 71 individuel pour chaque pôle.The first transmission crank 40 inside each casing 38 is carried by a rotary half-shaft 68 passing through the casing 38 with the interposition of a dynamic rotary seal 70, of the type described in the French patent No. 2,267,498. Outside the casing 38, each individual half-shaft 68 carries a second transmission crank 72 connected by a connecting rod 74 to a third transmission crank 76 associated with the common intermediate shaft 54. The cranks 72, 76 and the connecting rod 74 form an individual transmission system 71 for each pole.

Le fonctionnement de la commande des trois pôles 12, 14 16 ressort de la description précédente. Une commande d'ouverture ou de fermeture par le mécanisme 26 provoque la rotation de l'arbre intermédiaire 54 dans un sens ou dans l'autre, ce mouvement de rotation étant transmis aux tiges d'actionnement 32 individuelles des trois pôles 12, 14, 16, par l'intermédiaire de la troisième manivelle 76, la bielle de liaison 74, la deuxième manivelle 72, le demi-arbre 68, la première manivelle 40 et la tige filetée 42. Un tel agencement du dispositif de transmission 52 permet une adaptation aisée de l'écartement des pôles en fonction de la distance d'isolement dans l'air, qui dépend de la valeur de tension entre phase. Il suffit de modifier l'emplacement des plaques d'appui 36 des carters 38 sur la poutre 20, et d'adapter la longueur de l'arbre intermédiaire 54 à l'écartement longitudinal entre les pôles d'extrémités 12, 16. Toutes les pièces du dispositif de transmission 52 sont standard, indépendamment de la tension inter-phase, à l'exception de la poutre 20 et de l'arbre intermédiaire 54. Le caisson de la poutre 20 est ouvert, et communique avec le milieu extérieur. La communication gazeuse interne des pôles 12, 14, 16 s'opère pour les tuyaux 44 et le réservoir 46 de répartition de la pression interne de SF6, laquelle est contrôlée en permanence par le manostat 48.The operation of the control of the three poles 12, 14 16 is apparent from the preceding description. An opening or closing command by the mechanism 26 causes the rotation of the intermediate shaft 54 in one direction or the other, this rotational movement being transmitted to the individual actuating rods 32 of the three poles 12, 14, 16, via the third crank 76, the connecting rod 74, the second crank 72, the half-shaft 68, the first crank 40 and the threaded rod 42. Such an arrangement of the transmission device 52 allows adaptation easy separation of the poles as a function of the insulation distance in the air, which depends on the voltage value between phases. It suffices to modify the location of the bearing plates 36 of the casings 38 on the beam 20, and to adapt the length of the intermediate shaft 54 to the longitudinal spacing between the end poles 12, 16. All the parts of the transmission device 52 are standard, independently of the inter-phase voltage, with the exception of the beam 20 and the intermediate shaft 54. The box of the beam 20 is open, and communicates with the outside environment. The internal gas communication of the poles 12, 14, 16 takes place for the pipes 44 and the reservoir 46 for distributing the internal pressure of SF6, which is permanently controlled by the pressure switch 48.

Les figures 4 et 5 montrent la disposition du disjoncteur 10 pour une tension de réseau supérieure à celle de la figure 1. L'écartement entre pôles 12, 14, 16 a été augmenté ainsi que la longueur de la poutre 20 horizontale.Figures 4 and 5 show the arrangement of the circuit breaker 10 for a network voltage greater than that of Figure 1. The spacing between poles 12, 14, 16 has been increased as well as the length of the horizontal beam 20.

La rigidité mécanique du châssis 18 est renforcée par une paire de tirants 80, 82 obliques s'étendant entre les extrémités de la poutre 20 horizontale, et la base du pied 22 central.The mechanical rigidity of chassis 18 is reinforced by a pair of oblique tie rods 80, 82 extending between the ends of the horizontal beam 20, and the base of the central leg 22.

Selon la variante des figures 6 et 7, le renforcement du châssis 18 s'effectue au moyen de deux tréteaux 84, 86 d'extrémités reposant directement sur le sol de part et d'autre du pied 22 central.According to the variant of FIGS. 6 and 7, the reinforcement of the chassis 18 is carried out by means of two trestles 84, 86 of ends resting directly on the ground on either side of the central foot 22.

Claims (6)

  1. A multipole high-voltage electrical circuit breaker, having a plurality of spaced apart poles (12, 14, 16), arranged in line on a metal frame (18) with a predetermined separating distance, each pole (12, 14, 16) having an enclosure in the form of a column, filled with high dielectric strength gas, notably sulphur hexafluoride, and housing a separable contacts system having a stationary contact and a movable contact coupled to an actuating rod, and an arc extinguishing device, the circuit breaker being actuated by an operating device comprising :
    - an operating mechanism (26), housed in an enclosure (24) securedly united to the frame (18),
    - a transmission device (52) arranged inside a horizontal beam (20) shaped as a hollow box girder, and comprising an intermediate rotary shaft (54) extending according to the longitudinal direction of the beam (20) to transmit the opening or closing energy of the mechanism (26) to the actuating rods (22) of the poles (12, 14, 16),
    - a first transmission crank (40) housed inside a sealed individual casing (38) provided at the base of each pole (12, 14, 16), whose enclosure communicates with the internal volume of said casing,
    - and a mechanical connection (34) to kinematically link the first crank (40) to the actuating rod (32) of the corresponding movable contact,
    characterized in that :
    - the first crank (40) of each pole (12, 14, 16) is supported by a rotary half-shaft (68) passing tightly through the casing (38) according to the longitudinal direction of the beam (20),
    - the half-shaft (68) is coupled to the intermediate shaft (54) by a transmssion system (71) with crank-rods (72, 74, 76) whose movement takes place at the level of each casing (38) in a plane perpendicular to the longitudinal direction of the beam (20),
    - a bearing plate (36) is positioned at a preset place of the beam (20) for assembly of the corresponding pole (12, 14, 16) or of its support column (13, 15, 17),
    - the operating mechanism (26) is coupled to an opening control crank (56) and to a closing control crank (58) mounted on the intermediate shaft (54) near to the middle zone of the beam (20).
  2. The circuit breaker according to claim 1, characterized in that the box of the beam (20) communicates with the external environment, and that the individual casings (38) are interconnected by a piping system (44) enabling internal communication of the poles (12, 14, 16) for a uniform distribution of the insulating gas.
  3. The circuit breaker according to claim 2, characterized in that the piping system (44) is connected to a distribution tank (46), to which tank there is connected a pressure switch for gas pressure control.
  4. The circuit breaker according to one of the claims 1 to 3, characterized in that the half-shafts (68) of all the poles (12, 14, 16) are aligned according to a direction parallel to the intermediate shaft (54).
  5. The circuit breaker according to claim 4, characterized in that the transmission system (71) between the intermediate shaft (54) and each half-shaft (68) comprises a second crank (72) supported by the half-shaft (68) outside the casing (38), and connected by a connecting rod (74) to a third crank (76) associated to the common intermediate shaft (54).
  6. The three-phase circuit breaker according to one of the claims 1 to 5, characterized in that the intermediate shaft (54) is mounted with rotation in three bearings (64) arranged in flanges (66) securedly united to the casings (38), and that the enclosure (24) of the operating mechanism (26) is aligned vertically with the centre pole (14) being inserted between the base of the beam (20) and a leg (22) of the frame (18).
EP19900420427 1989-10-16 1990-10-03 Operating device for a high-voltage multipole circuit breaker Expired - Lifetime EP0424281B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8913582A FR2653266B1 (en) 1989-10-16 1989-10-16 DEVICE FOR CONTROLLING A HIGH VOLTAGE CIRCUIT BREAKER WITH SEPARATE POLES.
FR8913582 1989-10-16

Publications (2)

Publication Number Publication Date
EP0424281A1 EP0424281A1 (en) 1991-04-24
EP0424281B1 true EP0424281B1 (en) 1995-04-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900420427 Expired - Lifetime EP0424281B1 (en) 1989-10-16 1990-10-03 Operating device for a high-voltage multipole circuit breaker

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EP (1) EP0424281B1 (en)
DE (1) DE69018367T2 (en)
FR (1) FR2653266B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4302933A1 (en) * 1993-01-29 1994-08-04 Siemens Ag High voltage power switch
FR2735899B1 (en) * 1995-06-22 1997-08-01 Gec Alsthom T & D Sa SELF-DISCONNECTOR SWITCH
US9324518B2 (en) 2012-04-13 2016-04-26 Abb Technology Ag Self-contained link module for gang-style high voltage dead tank breaker

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1586097A (en) * 1964-07-08 1970-02-06
US3665133A (en) * 1968-12-30 1972-05-23 Westinghouse Electric Corp Delayed-acting blast valve operator construction
DE2913379C3 (en) * 1979-03-30 1988-03-24 Siemens AG, 1000 Berlin und 8000 München Multipole electrical switching device with a mounting body protruding into the interior of a tubular base frame
FR2526581B1 (en) * 1982-05-10 1985-07-19 Merlin Gerin DEVICE FOR CONTROLLING THE POLES OF A HIGH VOLTAGE MULTIPOLAR CIRCUIT BREAKER
DE8705155U1 (en) * 1987-04-07 1988-08-04 Siemens AG, 1000 Berlin und 8000 München High-voltage circuit breakers, in particular gas-operated circuit breakers

Also Published As

Publication number Publication date
DE69018367T2 (en) 1995-11-02
FR2653266A1 (en) 1991-04-19
FR2653266B1 (en) 1995-11-24
DE69018367D1 (en) 1995-05-11
EP0424281A1 (en) 1991-04-24

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