EP2178100B1 - Electrical switching apparatus equipped with two switches, such as a busbar section isolator and an earthing switch and comprising driving means shared with the mobile contacts of the switches - Google Patents

Electrical switching apparatus equipped with two switches, such as a busbar section isolator and an earthing switch and comprising driving means shared with the mobile contacts of the switches Download PDF

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Publication number
EP2178100B1
EP2178100B1 EP09172750A EP09172750A EP2178100B1 EP 2178100 B1 EP2178100 B1 EP 2178100B1 EP 09172750 A EP09172750 A EP 09172750A EP 09172750 A EP09172750 A EP 09172750A EP 2178100 B1 EP2178100 B1 EP 2178100B1
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EP
European Patent Office
Prior art keywords
lever
movable
hollow tube
levers
straight line
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EP09172750A
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German (de)
French (fr)
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EP2178100A1 (en
Inventor
Bernard Gelloz
Christophe Rech
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Grid Solutions SAS
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Areva T&D SAS
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Publication of EP2178100A1 publication Critical patent/EP2178100A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
    • 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

Definitions

  • the invention generally relates to the field of high or medium voltage electrical switching apparatus comprising two switches, such as a bar switch and an earthing switch.
  • the invention relates to apparatus of this type in which one of the switches is a bar switch and the other of the switches is an earthing switch.
  • each switch such as a disconnector comprises a pair of contacts consisting of a fixed contact and a movable contact in translation so as to separate mutually when switching.
  • the main application is the medium or high electrical voltage in which the bar disconnector and the earthing switch are arranged in insulating envelopes each filled with a dielectric gas under a controlled atmosphere, such as SF6.
  • interlocking devices the purpose of which is to ensure the safety of persons and equipment, have the function of allowing the position of the bar switch to be kept in the open position when the earthing switch is in the closed position. last not to take place in the presence of an electrical voltage on the main electrical circuit.
  • the document EP 0 735 637 B1 discloses in its embodiment of Figure 8, an electrical switching apparatus comprising two bar disconnectors 28, 35; 29, 36 in which the two movable contacts 35, 36 movable in translation are each connected by means of a coupling rod 42, 43 of generally rectilinear shape to a single-arm lever 45.
  • This lever 45 is itself fixed to a rotation shaft 21 whose axis of rotation is arranged at the intersection of the respective translation axes of the contacts 35, 36.
  • the document EP 1 082 791 B1 also discloses in its embodiment of the figure 2 an electrical switching apparatus comprising a bar switch 53, 31 and an earthing switch 55, 16 in which the two movable translational contacts 53, 55 are each connected via a connecting rod 74, 75
  • This lever 71 is itself fixed to a rotation shaft 7 whose axis of rotation is arranged at a distance a1, a2 of the respective translation axes of the contacts 53, 55.
  • the document EP 1 068 659 B1 discloses, in its embodiment of the figure 2 an electrical switching apparatus comprising two switches 25, 22, 23; 24, 22, 23 in which a single contact 22 movable in translation is connected, via a bushing 26 arranged in the contact 22, to a single-arm lever 61.
  • This lever 61 is itself fixed to a rotation shaft 5 whose axis of rotation is arranged at a distance from the translation axis of the movable contact 22.
  • the transmission ratio (ratio between the linear stroke of the movable contact 22 and the angular travel of the rotation shaft 5 ) is very high close to the closed positions (mutual support of the movable contact 22 with the corresponding fixed contact 23 or with the fixed contact 24).
  • Such a high ratio requires a high torque on the shaft 5.
  • a radial force reacts on the movable contact 22 near the closed positions with the risk that it rotates.
  • the structures of the disclosed devices are not optimal for use in very high voltage because the dielectric cover of the transmission elements (shaft, lever (s), connecting rod) is difficult to achieve.
  • the size, cost and assembly of the electrical switching apparatus comprising two switches, as currently proposed, can be further improved.
  • the object of the invention is thus to propose an improvement of the switching apparatus in this sense.
  • the invention relates to a control mechanism of an electrical switching apparatus comprising two switches, such as a bar disconnector and an earthing switch, each of which comprises a pair of contacts comprising a fixed contact and a contact movable in translation so as to separate each other during a switch, wherein the control mechanism comprises common means for driving the movable contacts which allow the opening of one of the switches while now closing the other switches and vice versa, a mechanism in which the geometric shape, the dimensions and the arrangement of the movable contacts and their drive means allow to cross the translation travel of the movable contacts.
  • crossing the translation races it should be understood here and in the context of the invention that, seen in a direction corresponding to that of the axis of rotation, the movable contacts have translational strokes which interlock or in other words, overlap.
  • the hollow tube has a slot made over part of its height from its opposite end to that facing the associated fixed contact, this slot being arranged to allow the elongate lever to be inserted during the translation of the hollow tube and increase its stroke of translation of its open position to its closed position.
  • the hollow tube has a slot made over part of its height from its end opposite to that facing the associated fixed contact, this slot being arranged to allow the elongate lever to be inserted during the translation. of the hollow tube and to increase the translation stroke of the other movable contact from its open position to its closed position.
  • the lever articulated between the right lever secured to the axis of rotation and the solid rod has a curved shape to reduce the radial forces on the rod near its closed position.
  • the solid rod has a slot made over part of its height from its opposite end to that opposite the associated fixed contact, this slot being arranged to allow the curved lever to be inserted during the translation of the rod and to increase both its translational stroke from its open position to its closed position and the translational travel of the hollow tube.
  • At least one of the two drive assemblies consists of a pair of levers, one of which is integral with the axis of rotation and the other articulated with one of the movable contacts and with the lever of training.
  • one of the two drive assemblies such as that of the movable bar switch contact, consists of a disk cam integral with the axis of rotation and a pair of levers, one of the levers comprising one end is fixed to a fixed hinge point and the other is articulated to the other of the levers itself articulated to one of the movable contacts, the lever to a fixed hinge point comprising a lug arranged between its two ends and housed in a groove in the cam forming a follower mechanism in which the geometric shape, the length and arrangement of the pair of levers, and the profile of the cam groove allows to have a ratio additional drive between the disk cam and the associated moving contact.
  • the invention also relates to an electrical switching apparatus comprising a casing in which are housed at least partially the movable contacts of two switches, such as a bar switch and an earthing switch and a control mechanism described above.
  • This apparatus may comprise a guide tube for guiding one of the movable contacts on a part of its translation travel.
  • the movable contact guided by the guide tube is advantageously the grounding rod.
  • the invention relates to a medium and high voltage sub-tank, comprising, at least for one phase, an electrical switching apparatus mentioned above.
  • a medium and high voltage sub-tank according to the invention has, for each phase, the envelope of the electrical switching apparatus described above which is housed in a given metal tank.
  • the station according to the invention can thus have the three metal tanks interconnected by a linkage system moved in translation by an actuator and adapted to simultaneously rotate the control mechanisms of the apparatus.
  • the following figures show a switching device A according to the invention which makes it possible to perform the switching of a single pole. It goes without saying that the arrangement described hereinafter of a switching apparatus can be repeated for each pole in the case of a multipole combination.
  • FIG. 1 On the figure 1 is shown a part of a three-phase electrical switching station 1 comprising three identical envelopes. Only one envelope 2A is shown. Inside it is housed a switching device according to the invention. Each of the three identical phases is arranged in a given metal vessel. Only the tank 3A housing the corresponding envelope 2A is shown.
  • the earthing switch 20 and the bar disconnector 21 of one of the phases 2A are arranged substantially in a plane by being superposed, or in other words offset along the axis of rotation X.
  • These disconnectors 20, 21 form an angle of 90.degree. ° between them. It goes without saying that the relative arrangement between the earthing switch 20 and the bar switch 21 may be different and such that the disconnectors form an angle between 70 and 180 °.
  • the movable contacts 200, 210 of a phase and the drive means 22 (otherwise called force transmission means) of the same phase are arranged in the same envelope 2A.
  • Each movable contact 200, 210 slides in an opening 200A, 210A provided for this purpose in the envelope 2A.
  • the fixed contact 201 of each earthing switch is fixed inside the metal tank 3A.
  • the fixed contact 211 of each bar switch is fixed to a driver not shown.
  • the common drive means 22 of the movable contacts 200, 210 allow the opening of the earthing switch 20 while maintaining the closure of the bar switch 21 and vice versa.
  • the fact that the movable contacts 200, 210 do not move in their open position makes it possible to save space for the envelope 2A, 2B or 2C.
  • the common drive means 22 comprise an axis 220.
  • This axis 220 is adapted to be rotated by a not shown actuator which translates a linkage system itself connected transversely to the three axes. 220 phases of the GIS station according to the invention.
  • the geometric shape, the dimensions and the arrangement of the movable contacts 200, 210 and their driving means detailed below make it possible to cross the translation races C1, C2 of the movable contacts 200, 210.
  • control mechanism makes it possible to cross the races C1, C2 of translation of the movable contacts 200, 210 respectively of the earthing switch 20 and of the bar switch 21.
  • the common drive means further comprises a piece 221 with two arms 2210, 2211 forming separate levers, the piece 221 being fixed on the axis of rotation 220.
  • One of the levers 2210 has a stirrup shape.
  • the other of these levers 2211 has a straight elongate shape.
  • Each of the two levers 2210, 2211 of the part 221 attached to the axis 220 is articulated at a point of articulation 222 with a link 2220, 2221 also forming coupling levers.
  • the coupling lever 2220 articulated to the lever 2210 has a curved shape in order to reduce the radial forces that may occur on the earth contact 200.
  • This lever 2220 is itself articulated at a hinge point 223 to the moving contact 200 of the earthing switch 20.
  • the coupling lever 2221 articulated to the lever 2211 has a straight elongated shape and is itself hinged at a pivot point 223 to the moving contact 210 of the bar switch 21.
  • the dimensions of the levers 2211, 2221, as well as their arrangement and that of the axis of rotation 220 are chosen such that the stirrup 2211 surrounds the movable contact 210 to which it is connected over at least a part of its translational stroke C2.
  • the movable contact 210 of the bar switch 21, connected to the stirrup lever 2211 has a hollow tube shape ( figure 2 for example)
  • the hinge 223 of the right lever 2221 to the hollow tube 210 is arranged inside the hollow tube at a height sufficient to allow a portion of the length of the right lever 2221 to be accommodated thereon on the translation travel of the hollow tube C1.
  • the movable contact 200 of the earthing switch 20 connected to the straight form lever 2210 has a solid rod shape.
  • the articulated lever 2220 between the right lever 2210 integral with the axis of rotation 220 and the solid rod 200 has a curved shape making it possible to reduce the radial forces on the rod close to its closed position ( figure 2 ).
  • a guide tube 23 which allows to guide in translation the contact rod 200 of grounding over a large part of its translation travel ( figure 2 for example).
  • the movable contact 210 of the bar switch 21 has a hollow tube shape and the movable contact 200 of the earthing switch 20 has a solid rod shape.
  • the control mechanism here comprises two drive assemblies which each transform the rotational movement of the axis 220 into translational motion at one of the movable contacts 200, 210.
  • Each of the assemblies comprises a drive part 2210, 2211 integral with the axis of rotation 220.
  • the two drive assemblies are arranged in parallel with each other so that when the movable contacts 200, 210 are in an intermediate position between their closed position and opening, they are immediately adjacent to each other at a distance e sufficient to allow their translation without friction between them.
  • the driving assembly of the movable rod 200 of the earthing switch 20 consists of a pair of levers 2210, 2220.
  • the driving lever 2210 integral with the axis of rotation 220 is articulated directly to the other 2220 itself directly articulated to the movable rod 200.
  • a drive variant of the mobile hollow tube 210 of the bar disconnector consists of a disc cam 2211 'integral with the axis of rotation 220 and a pair of levers 2221, 226 hinged together.
  • One of the levers 226 includes one end 2260 is attached to a point fixed hinge 227.
  • the other 2261 of the ends of the lever 226 is articulated to the lever 2221 hinged mobile hollow tube 210.
  • the lever 226 fixed at the point 227 comprises a lug 2262 arranged between its two ends 2260, 2261 and housed in a groove 22110 'formed in the cam 2211' forming a follower.

Landscapes

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

Abstract

The mechanism has a common actuating unit for actuating movable contacts (200, 210) of interrupters i.e. grounding disconnector (20) and busbar disconnector (21), to permit opening of one of the interrupters while maintaining closed state of the other interrupter and vice versa. Geometry, dimensions and arrangement of the contacts and the actuating unit permit crossing of straight line strokes of the contacts. The actuating unit has a piece (221) provided with levers (2210, 2211) and fixed on a rotatable shaft (220). An independent claim is also included for a medium and high voltage gas insulated switch including a metallic casing in which an envelope of an electrical switch apparatus is housed.

Description

DOMAINE TECHNIQUETECHNICAL AREA

L'invention se rapporte généralement au domaine des appareils de commutation électrique de haute ou moyenne tension comprenant deux interrupteurs, tels qu'un sectionneur de barre et un sectionneur de terre.The invention generally relates to the field of high or medium voltage electrical switching apparatus comprising two switches, such as a bar switch and an earthing switch.

L'invention concerne en particulier des appareils de ce type dans lesquels un des interrupteurs est un sectionneur de barre et l'autre des interrupteurs est un sectionneur de terre.In particular, the invention relates to apparatus of this type in which one of the switches is a bar switch and the other of the switches is an earthing switch.

Plus spécifiquement, l'invention se rapporte à ce type d'appareils de commutation dans lesquels chaque interrupteur, tel qu'un sectionneur comprend une paire de contacts constituée d'un contact fixe et d'un contact mobile en translation de sorte à se séparer mutuellement lors d'une commutation.More specifically, the invention relates to this type of switching apparatus in which each switch, such as a disconnector comprises a pair of contacts consisting of a fixed contact and a movable contact in translation so as to separate mutually when switching.

L'application principale est la moyenne ou haute tension électrique selon laquelle le sectionneur de barre et le sectionneur de terre sont disposés dans des enveloppes isolantes remplies chacune d'un gaz diélectrique sous atmosphère contrôlée, tel que du SF6.The main application is the medium or high electrical voltage in which the bar disconnector and the earthing switch are arranged in insulating envelopes each filled with a dielectric gas under a controlled atmosphere, such as SF6.

ART ANTÉRIEURPRIOR ART

Habituellement, les manoeuvres mécaniques de ce type d'appareils sont indépendantes, assurées par deux commandes mécaniques distinctes et contrôlées par des dispositifs mécaniques ou électriques d'inter verrouillage.Usually, the mechanical maneuvers of this type of apparatus are independent, provided by two separate mechanical controls and controlled by mechanical or electrical interlocking devices.

Ces dispositifs d'interverrouillage, dont le but est d'assurer la sécurité des personnes et du matériel, ont pour fonction de permettre un maintien de la position du sectionneur de barre en position ouverte lorsque le sectionneur de terre est en position de fermeture, cette dernière ne devant pas avoir lieu en présence d'une tension électrique sur le circuit électrique principal.These interlocking devices, the purpose of which is to ensure the safety of persons and equipment, have the function of allowing the position of the bar switch to be kept in the open position when the earthing switch is in the closed position. last not to take place in the presence of an electrical voltage on the main electrical circuit.

Il a déjà été proposé d'entraîner chaque contact mobile de deux interrupteurs distincts, tels qu'un sectionneur de barre et un sectionneur de terre, à l'aide d'un unique arbre de commande en rotation. En particulier, il est connu d'entraîner en translation deux contacts mobiles par un unique arbre de rotation.It has already been proposed to drive each movable contact of two separate switches, such as a bar disconnector and an earthing switch, using a single rotating control shaft. In particular, it is known to translate two mobile contacts in translation by a single rotation shaft.

Le document EP 0 735 637 B1 divulgue dans son mode de réalisation de la figure 8, un appareil de commutation électrique comprenant deux sectionneurs de barre 28, 35 ; 29, 36 dans lequel les deux contacts 35, 36 mobiles en translation sont connectés chacun par l'intermédiaire d'une biellette d'accouplement 42, 43 de forme générale rectiligne à un levier à bras unique 45. Ce levier 45 est lui-même fixé à un arbre de rotation 21 dont l'axe de rotation est agencé à l'intersection des axes de translation respectifs des contacts 35, 36.The document EP 0 735 637 B1 discloses in its embodiment of Figure 8, an electrical switching apparatus comprising two bar disconnectors 28, 35; 29, 36 in which the two movable contacts 35, 36 movable in translation are each connected by means of a coupling rod 42, 43 of generally rectilinear shape to a single-arm lever 45. This lever 45 is itself fixed to a rotation shaft 21 whose axis of rotation is arranged at the intersection of the respective translation axes of the contacts 35, 36.

Le document EP 1 082 791 B1 divulgue également dans son mode de réalisation de la figure 2, un appareil de commutation électrique comprenant un sectionneur de barre 53, 31 et un sectionneur de terre 55, 16 dans lequel les deux contacts 53, 55 mobiles en translation sont connectés chacun par l'intermédiaire d'une biellette d'accouplement 74, 75 de forme générale rectiligne à un levier à bras unique 71. Ce levier 71 est lui-même fixé à un arbre de rotation 7 dont l'axe de rotation est agencé à distance a1, a2 des axes de translation respectifs des contacts 53, 55.The document EP 1 082 791 B1 also discloses in its embodiment of the figure 2 an electrical switching apparatus comprising a bar switch 53, 31 and an earthing switch 55, 16 in which the two movable translational contacts 53, 55 are each connected via a connecting rod 74, 75 This lever 71 is itself fixed to a rotation shaft 7 whose axis of rotation is arranged at a distance a1, a2 of the respective translation axes of the contacts 53, 55.

Le document EP 1 068 659 B1 divulgue, dans son mode de réalisation de la figure 2, un appareil de commutation électrique comprenant deux interrupteurs 25, 22, 23 ; 24, 22, 23 dans lequel un unique contact 22 mobile en translation est connecté, par l'intermédiaire d'une douille 26 agencée dans le contact 22, à un levier à bras unique 61. Ce levier 61 est lui-même fixé à un arbre de rotation 5 dont l'axe de rotation est agencé à distance de l'axe de translation du contact mobile 22. Le ratio de transmission (rapport entre la course linéaire du contact mobile 22 et la course angulaire de l'arbre de rotation 5) est très élevé à proximité des positions de fermeture (appui mutuel du contact mobile 22 avec le contact fixe correspondant 23 ou avec le contact fixe 24). Un tel ratio élevé nécessite un couple de rotation élevé sur l'arbre 5. De plus, une force radiale réagit sur le contact mobile 22 à proximité des positions de fermeture avec le risque que ce dernier pivote.The document EP 1 068 659 B1 discloses, in its embodiment of the figure 2 an electrical switching apparatus comprising two switches 25, 22, 23; 24, 22, 23 in which a single contact 22 movable in translation is connected, via a bushing 26 arranged in the contact 22, to a single-arm lever 61. This lever 61 is itself fixed to a rotation shaft 5 whose axis of rotation is arranged at a distance from the translation axis of the movable contact 22. The transmission ratio (ratio between the linear stroke of the movable contact 22 and the angular travel of the rotation shaft 5 ) is very high close to the closed positions (mutual support of the movable contact 22 with the corresponding fixed contact 23 or with the fixed contact 24). Such a high ratio requires a high torque on the shaft 5. In addition, a radial force reacts on the movable contact 22 near the closed positions with the risk that it rotates.

Les structures des appareils de commutation divulgués dans les documents mentionnés ci-dessus présentent toutes l'inconvénient majeur d'avoir un encombrement important pour les deux fonctions sectionnement de terre et du sectionneur.The structures of the switching devices disclosed in the documents mentioned above all have the major disadvantage of having a large footprint for both earth breaking functions and the disconnector.

En outre, les structures des appareils divulgués ne sont pas optimales pour une utilisation en très haute tension car le capotage diélectrique des éléments de transmission (arbre, levier(s), biellette d'accouplement) est difficile à réaliser.In addition, the structures of the disclosed devices are not optimal for use in very high voltage because the dielectric cover of the transmission elements (shaft, lever (s), connecting rod) is difficult to achieve.

Enfin, le coût des appareils de commutation divulgués est important.Finally, the cost of disclosed switching devices is important.

L'encombrement, le coût et l'assemblage des appareils de commutation électrique comprenant deux interrupteurs, tels qu'ils sont actuellement proposés peuvent être encore améliorés.The size, cost and assembly of the electrical switching apparatus comprising two switches, as currently proposed, can be further improved.

Le but de l'invention est ainsi de proposer une amélioration des appareils de commutation dans ce sens.The object of the invention is thus to propose an improvement of the switching apparatus in this sense.

EXPOSÉ DE L'INVENTIONSTATEMENT OF THE INVENTION

Pour ce faire, l'invention concerne un mécanisme de commande d'un appareil de commutation électrique comprenant deux interrupteurs, tels qu'un sectionneur de barre et un sectionneur de terre, dont chacun comprend une paire de contacts comprenant un contact fixe et un contact mobile en translation de sorte à se séparer mutuellement lors d'une commutation, dans lequel le mécanisme de commande comprend des moyens communs d'entraînement des contacts mobiles qui permettent l'ouverture d'un des interrupteurs tout en maintenant la fermeture de l'autre des interrupteurs et vice-versa, mécanisme dans lequel la forme géométrique, les dimensions ainsi que l'agencement des contacts mobiles et de leurs moyens d'entrainement permettent de croiser les courses de translation des contacts mobiles.To do this, the invention relates to a control mechanism of an electrical switching apparatus comprising two switches, such as a bar disconnector and an earthing switch, each of which comprises a pair of contacts comprising a fixed contact and a contact movable in translation so as to separate each other during a switch, wherein the control mechanism comprises common means for driving the movable contacts which allow the opening of one of the switches while now closing the other switches and vice versa, a mechanism in which the geometric shape, the dimensions and the arrangement of the movable contacts and their drive means allow to cross the translation travel of the movable contacts.

Par « croiser les courses de translation », il faut comprendre ici et dans le cadre de l'invention que, vu selon une direction correspondant à celle de l'axe de rotation, les contacts mobiles ont des courses de translation qui s'imbriquent ou, autrement dit, se chevauchent.By "crossing the translation races", it should be understood here and in the context of the invention that, seen in a direction corresponding to that of the axis of rotation, the movable contacts have translational strokes which interlock or in other words, overlap.

Ainsi, grâce à l'imbrication des courses de translation des contacts mobiles il est possible de réduire les distances allant de l'amenée du courant, jusqu'aux contacts fixes de chacun des deux interrupteurs, tels que le sectionneur de barre ou le sectionneur de terre. L'encombrement d'un appareil de commutation électrique dans le plan de translation des deux interrupteurs selon l'invention, est donc réduit par rapport aux appareils selon l'art antérieur.Thus, thanks to the interlocking of the translation races of the movable contacts it is possible to reduce the distances going from the supply of the current, to the fixed contacts of each of the two switches, such as the bar disconnector or the disconnector. Earth. The size of an electrical switching device in the plane of translation of the two switches according to the invention is reduced compared to the apparatus according to the prior art.

En outre, en réduisant l'encombrement, on réduit le coût d'un tel appareil. En effet, les dimensions de la cuve métallique dans laquelle est logé un appareil de commutation selon l'invention sont réduites, ce qui réduit en conséquence ses coûts matière, de transport...In addition, by reducing the size, it reduces the cost of such a device. Indeed, the dimensions of the metal vessel in which is housed a switching device according to the invention are reduced, which consequently reduces its material costs, transport ...

Selon un mode de réalisation avantageux de l'invention,

  • les moyens d'entraînement communs comprennent :
    • ■ un axe de rotation,
    • ■ une pièce solidaire de l'axe de rotation et comprenant deux leviers distincts avec l'un ayant la forme d'un étrier,
    • ■ le mécanisme comprend deux paires de leviers articulés entre eux, l'un des leviers de chaque paire étant l'un des leviers distincts de la pièce solidaire de l'axe de rotation, et l'autre des leviers de chaque paire étant articulé à l'un des contacts mobiles ; les dimensions des leviers ainsi que leur agencement et celui de l'axe de rotation étant tels que l'étrier entoure le contact mobile auquel il est relié sur au moins une partie de sa course de translation.
According to an advantageous embodiment of the invention,
  • common training means include:
    • ■ an axis of rotation,
    • A part integral with the axis of rotation and comprising two separate levers with one having the shape of a stirrup,
    • The mechanism comprises two pairs of levers hinged together, one of the levers of each pair being one of the separate levers of the integral part of the axis of rotation, and the other of the levers of each pair being articulated to one of the mobile contacts; the dimensions of the levers and their arrangement and that of the axis of rotation being such that the stirrup surrounds the movable contact to which it is connected over at least a part of its translation travel.

Selon ce mode de réalisation et une variante de réalisation préférée,

  • le contact mobile, tel que le contact mobile du sectionneur de barre, relié au levier en étrier a une forme de tube creux,
  • l'autre des leviers articulé au tube creux et au levier en étrier a une forme allongée, l'articulation du levier allongé au tube creux étant agencé à l'intérieur du tube creux à une hauteur suffisante pour permettre à une partie de la longueur du levier allongé d'y être logée sur la course de translation du tube creux.
According to this embodiment and a preferred embodiment variant,
  • the movable contact, such as the movable contact of the bar switch, connected to the stirrup lever has a hollow tube shape,
  • the other of the levers hinged to the hollow tube and the stirrup lever has an elongated shape, the articulation of the elongated lever to the hollow tube being arranged inside the hollow tube at a height sufficient to allow a part of the length of the elongated lever to be housed therein on the travel path of the hollow tube.

Selon une variante avantageuse, le tube creux présente une fente réalisée sur une partie de sa hauteur depuis son extrémité opposée à celle en regard du contact fixe associé, cette fente étant agencée pour permettre au levier allongé de s'y insérer lors de la translation du tube creux et d'augmenter sa course de translation de sa position d'ouverture à sa position de fermeture.According to an advantageous variant, the hollow tube has a slot made over part of its height from its opposite end to that facing the associated fixed contact, this slot being arranged to allow the elongate lever to be inserted during the translation of the hollow tube and increase its stroke of translation of its open position to its closed position.

Selon une autre variante avantageuse, le tube creux présente une fente réalisée sur une partie de sa hauteur depuis son extrémité opposée à celle en regard du contact fixe associé, cette fente étant agencée pour permettre au levier allongé de s'y insérer lors de la translation du tube creux et d'augmenter la course de translation de l'autre contact mobile de sa position d'ouverture à sa position de fermeture.According to another advantageous variant, the hollow tube has a slot made over part of its height from its end opposite to that facing the associated fixed contact, this slot being arranged to allow the elongate lever to be inserted during the translation. of the hollow tube and to increase the translation stroke of the other movable contact from its open position to its closed position.

Selon une variante préférée :

  • l'autre des leviers de la pièce solidaire de l'axe de rotation a une forme droite ;
  • le contact mobile, tel que le contact mobile du sectionneur de terre, relié au levier de forme droite a une forme de tige pleine.
According to a preferred variant:
  • the other levers of the integral part of the axis of rotation has a straight form;
  • the movable contact, such as the movable contact of the earthing switch, connected to the straight form lever has a solid rod shape.

Ainsi, en superposant en quelque sorte un tube creux avec une tige pleine de dimensions réduites on réduit l'encombrement de l'appareil selon l'axe de rotation par rapport à un appareil à deux contacts mobiles sous la forme de tube creux.Thus, by somehow superimposing a hollow tube with a solid rod of reduced dimensions reduces the size of the device along the axis of rotation relative to a device with two movable contacts in the form of hollow tube.

Selon cette dernière variante préférée, le levier articulé entre le levier droit solidaire de l'axe de rotation et la tige pleine a une forme incurvée permettant de réduire les efforts radiaux sur la tige à proximité de sa position de fermeture.According to this last preferred variant, the lever articulated between the right lever secured to the axis of rotation and the solid rod has a curved shape to reduce the radial forces on the rod near its closed position.

Selon cette variante préférée, la tige pleine présente une fente réalisée sur une partie de sa hauteur depuis son extrémité opposée à celle en regard du contact fixe associé, cette fente étant agencée pour permettre au levier incurvé de s'y insérer lors de la translation de la tige et, d'augmenter à la fois sa course de translation de sa position d'ouverture à sa position de fermeture et la course de translation du tube creux.According to this preferred variant, the solid rod has a slot made over part of its height from its opposite end to that opposite the associated fixed contact, this slot being arranged to allow the curved lever to be inserted during the translation of the rod and to increase both its translational stroke from its open position to its closed position and the translational travel of the hollow tube.

Selon un autre mode de réalisation du mécanisme selon l'invention :

  • un des contacts mobiles, tel que le contact mobile du sectionneur de barre, a une forme de tube creux,
  • l'autre contact mobile, tel que le contact mobile du sectionneur de terre, a une forme de tige pleine,
  • les moyens d'entraînement communs comprennent un axe de rotation,
  • le mécanisme comprend deux ensembles d'entraînement pour transformer chacun le mouvement de rotation de l'axe au mouvement de translation à l'un des contacts mobiles, chacun des ensembles comprenant une pièce d'entraînement solidaire de l'axe de rotation, les deux ensembles d'entraînement étant agencés en parallèle l'un de l'autre de sorte que lorsque la tige pleine et le tube creux mobiles sont dans une position intermédiaire entre leur position de fermeture et d'ouverture, ils sont immédiatement adjacents l'un de l'autre à une distance e suffisante pour permettre leur translation sans friction entre eux.
According to another embodiment of the mechanism according to the invention:
  • one of the movable contacts, such as the movable contact of the bar disconnector, has a hollow tube shape,
  • the other movable contact, such as the movable contact of the earthing switch, has a solid rod shape,
  • the common drive means comprise an axis of rotation,
  • the mechanism comprises two drive assemblies for each transforming the rotational movement of the axis to the translational movement to one of the movable contacts, each of the assemblies comprising a driving part integral with the axis of rotation, the two driving assemblies being arranged in parallel with each other so that when the solid rod and the movable hollow tube are in an intermediate position between their closed and open position, they are immediately adjacent to each other. the other at a distance e sufficient to allow their translation without friction between them.

En laissant une distance suffisante entre les deux ensembles d'entrainement uniquement pour permettre la translation de la tige pleine et du tube creux sans friction entre eux, on conserve un encombrement réduit dans le plan orthogonal aux interrupteurs et selon l'axe de rotation.By leaving a sufficient distance between the two drive assemblies only to allow the translation of the solid rod and the hollow tube without friction between them, one retains a reduced space in the plane orthogonal to the switches and along the axis of rotation.

Selon une variante, au moins un des deux ensembles d'entraînement est constitué d'une paire de leviers dont celui d'entraînement solidaire de l'axe de rotation et l'autre articulé à l'un des contacts mobiles et au levier d'entraînement.According to one variant, at least one of the two drive assemblies consists of a pair of levers, one of which is integral with the axis of rotation and the other articulated with one of the movable contacts and with the lever of training.

Selon une autre variante, un des deux ensembles d'entraînement, tels que celui du contact mobile de sectionneur de barre, est constitué d'une came à disque solidaire de l'axe de rotation et d'une paire de leviers, un des leviers comprenant une extrémité est fixée à un point d'articulation fixe et l'autre est articulée à l'autre des leviers lui-même articulé à l'un des contacts mobiles, le levier à un point d'articulation fixe comprenant un ergot agencé entre ses deux extrémités et logé dans une rainure pratiquée dans la came en formant un suiveur, mécanisme dans lequel la forme géométrique, la longueur et l'agencement de la paire de leviers, et le profil de la rainure de came permette d'avoir un rapport d'entraînement supplémentaire entre la came à disque et le contact mobile associé. Par l'expression « rapport d'entraînement supplémentaire entre la(es) came(s) à disque et chaque contact mobile associé », il faut comprendre ici et dans le cadre de l'invention un rapport d'entrainement supplémentaire à un entrainement selon lequel le contact mobile est directement articulé à une rainure de came à disque, comme par exemple montré dans le document CH 696 476 .According to another variant, one of the two drive assemblies, such as that of the movable bar switch contact, consists of a disk cam integral with the axis of rotation and a pair of levers, one of the levers comprising one end is fixed to a fixed hinge point and the other is articulated to the other of the levers itself articulated to one of the movable contacts, the lever to a fixed hinge point comprising a lug arranged between its two ends and housed in a groove in the cam forming a follower mechanism in which the geometric shape, the length and arrangement of the pair of levers, and the profile of the cam groove allows to have a ratio additional drive between the disk cam and the associated moving contact. By the expression "additional drive ratio between the disk cam (s) and each associated moving contact", it is necessary to understand here and in the context of the invention an additional training ratio to a training according to which the movable contact is directly articulated to a disk cam groove, as for example shown in the document CH 696 476 .

L'invention concerne également un appareil de commutation électrique comprenant une enveloppe dans laquelle sont logés au moins partiellement les contacts mobiles de deux interrupteurs, tels qu'un sectionneur de barre et un sectionneur de terre et un mécanisme de commande décrit précédemment.The invention also relates to an electrical switching apparatus comprising a casing in which are housed at least partially the movable contacts of two switches, such as a bar switch and an earthing switch and a control mechanism described above.

Cet appareil peut comprendre un tube de guidage pour guider un des contacts mobiles sur une partie de sa course de translation.This apparatus may comprise a guide tube for guiding one of the movable contacts on a part of its translation travel.

Le contact mobile guidé par le tube de guidage est avantageusement la tige de mise à la terre.The movable contact guided by the guide tube is advantageously the grounding rod.

L'invention concerne enfin un poste de moyenne et haute tension sous cuve métallique, comportant, au moins pour une phase, un appareil de commutation électrique mentionné ci-dessus.Finally, the invention relates to a medium and high voltage sub-tank, comprising, at least for one phase, an electrical switching apparatus mentioned above.

De préférence, un poste de moyenne et haute tension sous cuve métallique selon l'invention a, pour chaque phase, l'enveloppe de l'appareil de commutation électrique décrit ci-dessus qui est logée dans une cuve métallique donnée.Preferably, a medium and high voltage sub-tank according to the invention has, for each phase, the envelope of the electrical switching apparatus described above which is housed in a given metal tank.

Le poste selon l'invention peut ainsi avoir les trois cuves métalliques reliées entre elles par un système de tringlerie déplacé en translation par un actionneur et adapté pour mettre en rotation simultanément les mécanismes de commande des appareils.The station according to the invention can thus have the three metal tanks interconnected by a linkage system moved in translation by an actuator and adapted to simultaneously rotate the control mechanisms of the apparatus.

BRÈVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

Les caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description détaillée suivante, donnée à titre indicatif, et faite en référence aux dessins annexés. Parmi ces figures :

  • la figure 1 est une vue partielle en perspective d'un poste GIS avec vue en coupe d'un des appareils de commutation électrique constituant une des phases 2A selon un mode de réalisation de l'invention, l'appareil étant en position intermédiaire (ouvertures du sectionneur de barre et du sectionneur de terre),
  • la figure 2 est une autre vue en coupe partielle de l'appareil selon la figure 1, l'appareil étant en position de terre (sectionneur de terre fermé),
  • la figure 3 est une autre vue en coupe partielle de l'appareil selon la figure 1, l'appareil étant en position de fermeture (fermeture du sectionneur de barre),
  • la figure 4 est une illustration schématique des positions de translation des contacts mobiles de l'appareil selon une des figures 1 à 3,
  • les figures 5A et 5B sont des vues en coupe partielle d'un des appareils de commutation électrique constituant une des phases 2A selon un autre mode de réalisation de l'invention que celui des figures 1 à 3, l'appareil étant en position intermédiaire (ouverture des sectionneurs de barre et de terre),
  • la figure 6 est une vue en coupe partielle d'un appareil selon le mode de réalisation des figures 5A et 5B et illustrant une variante d'entraînement du contact mobile du sectionneur de barre, le contact mobile représenté étant en position de fermeture.
The features and advantages of the invention will be better understood on reading the following detailed description given for information only and with reference to the accompanying drawings. Among these figures:
  • the figure 1 is a partial perspective view of a GIS station with sectional view of one of the electrical switching devices constituting one of the phases 2A according to one embodiment of the invention, the apparatus being in the intermediate position (openings of the disconnector of bar and earthing switch),
  • the figure 2 is another partial sectional view of the apparatus according to the figure 1 the device is in the earth position (closed earthing switch),
  • the figure 3 is another partial sectional view of the apparatus according to the figure 1 with the apparatus in the closed position (closing of the bar switch),
  • the figure 4 is a schematic illustration of the translational positions of the mobile contacts of the apparatus according to one of the Figures 1 to 3 ,
  • the Figures 5A and 5B are partial sectional views of one of the electrical switching devices constituting one of the phases 2A according to another embodiment of the invention than that of the Figures 1 to 3 , the device being in the intermediate position (opening of the bar and earth disconnectors),
  • the figure 6 is a partial sectional view of an apparatus according to the embodiment of Figures 5A and 5B and illustrating an alternative drive of the movable contact of the bar switch, the movable contact shown being in the closed position.

EXPOSÉ DÉTAILLÉ DE MODES DE RÉALISATION PARTICULIERSDETAILED PRESENTATION OF PARTICULAR EMBODIMENTS

Les figures suivantes montrent un appareil de commutation A selon l'invention qui permet de réaliser les commutations d'un seul pôle. Il va de soi que l'agencement décrit ci-après d'un appareil de commutation peut être répété pour chaque pôle dans le cas d'une combinaison multipolaire.The following figures show a switching device A according to the invention which makes it possible to perform the switching of a single pole. It goes without saying that the arrangement described hereinafter of a switching apparatus can be repeated for each pole in the case of a multipole combination.

Sur la figure 1 est représenté une partie d'un poste de commutation électrique à trois phases 1 comprenant trois enveloppes identiques. Seule une enveloppe 2A est montrée. A l'intérieur de celle-ci est logé un appareil de commutation selon l'invention. Chacune des trois phases identiques est agencée dans une cuve métallique donnée. Seule la cuve 3A logeant l'enveloppe 2A correspondante est montrée.On the figure 1 is shown a part of a three-phase electrical switching station 1 comprising three identical envelopes. Only one envelope 2A is shown. Inside it is housed a switching device according to the invention. Each of the three identical phases is arranged in a given metal vessel. Only the tank 3A housing the corresponding envelope 2A is shown.

Dans le mode de réalisation illustré aux figures 1 à 3, le sectionneur de terre 20 et le sectionneur de barre 21 d'une des phases 2A sont agencés substantiellement dans un plan en étant superposés, ou autrement dit décalés selon l'axe de rotation X. Ces sectionneurs 20, 21 forment un angle de 90° entre eux. Il va de soi que l'agencement relatif entre le sectionneur de terre 20 et le sectionneur de barre 21 peut être différent et tel que les sectionneurs forment un angle compris entre 70 et 180°.In the embodiment illustrated in Figures 1 to 3 , the earthing switch 20 and the bar disconnector 21 of one of the phases 2A are arranged substantially in a plane by being superposed, or in other words offset along the axis of rotation X. These disconnectors 20, 21 form an angle of 90.degree. ° between them. It goes without saying that the relative arrangement between the earthing switch 20 and the bar switch 21 may be different and such that the disconnectors form an angle between 70 and 180 °.

Les contacts mobiles 200, 210 d'une phase et les moyens d'entraînement 22 (autrement appelés moyens de transmission de force) d'une même phase sont agencés dans une même enveloppe 2A. Chaque contact mobile 200, 210 coulisse dans une ouverture 200A, 210A prévue à cet effet dans l'enveloppe 2A. Le contact fixe 201 de chaque sectionneur de terre est fixé à l'intérieur de la cuve métallique 3A. Le contact fixe 211 de chaque sectionneur de barre est fixé à un conducteur non représenté.The movable contacts 200, 210 of a phase and the drive means 22 (otherwise called force transmission means) of the same phase are arranged in the same envelope 2A. Each movable contact 200, 210 slides in an opening 200A, 210A provided for this purpose in the envelope 2A. The fixed contact 201 of each earthing switch is fixed inside the metal tank 3A. The fixed contact 211 of each bar switch is fixed to a driver not shown.

Dans le mode de réalisation illustré, les moyens d'entraînement communs 22 des contacts mobiles 200, 210 permettent l'ouverture du sectionneur de terre 20 tout en maintenant la fermeture du sectionneur de barre 21 et vice-versa. Le fait que les contacts mobiles 200, 210 ne se déplacent pas dans leur position d'ouverture permet d'obtenir un gain de place pour l'enveloppe 2A, 2B ou 2C.In the illustrated embodiment, the common drive means 22 of the movable contacts 200, 210 allow the opening of the earthing switch 20 while maintaining the closure of the bar switch 21 and vice versa. The fact that the movable contacts 200, 210 do not move in their open position makes it possible to save space for the envelope 2A, 2B or 2C.

Dans le mode de réalisation illustré, les moyens d'entrainement communs 22 comprennent un axe 220. Cet axe 220 est adapté pour être mis en rotation par un actionneur non représenté qui met en translation un système de tringlerie lui-même relié transversalement aux trois axes 220 des phases du poste GIS selon l'invention.In the illustrated embodiment, the common drive means 22 comprise an axis 220. This axis 220 is adapted to be rotated by a not shown actuator which translates a linkage system itself connected transversely to the three axes. 220 phases of the GIS station according to the invention.

Selon l'invention, la forme géométrique, les dimensions ainsi que l'agencement des contacts mobiles 200, 210 et de leurs moyens d'entrainement détaillés ci-après permettent de croiser les courses de translation C1, C2 des contacts mobiles 200, 210.According to the invention, the geometric shape, the dimensions and the arrangement of the movable contacts 200, 210 and their driving means detailed below make it possible to cross the translation races C1, C2 of the movable contacts 200, 210.

Sur la figure 4, on a représenté schématiquement sur un même plan transversal à l'axe de rotation 220 de les positions de translation extrêmes des contacts mobiles 200, 210 correspondant respectivement à leur position d'ouverture et de fermeture. On précise que l'axe de translation représenté pour chaque contact mobile 200, 210 est leur axe de symétrie, l'indication O correspondant à la position d'ouverture, l'indication F correspondant à leur fermeture, la course de translation du contact mobile 200 du sectionneur de terre 20 étant indiquée en C1 tandis que celle du contact 210 du sectionneur de barre 21 est indiquée en C2. Les positions O et F sont celles prises par l'extrémité de chacun des contacts mobiles 200, 210 opposée à celle en regard des contacts fixes 201, 211.On the figure 4 schematically shown on the same plane transverse to the axis of rotation 220 of the extreme translation positions of the movable contacts 200, 210 respectively corresponding to their open position and closure. It is specified that the translation axis represented for each movable contact 200, 210 is their axis of symmetry, the indication O corresponding to the open position, the indication F corresponding to their closure, the displacement travel of the movable contact 200 of the earthing switch 20 being indicated at C1 while that of the contact 210 of the disconnector of bar 21 is indicated in C2. The positions O and F are those taken by the end of each of the movable contacts 200, 210 opposite to that opposite the fixed contacts 201, 211.

Il est clair à la lecture de la figure 4 que le mécanisme de commande selon l'invention permet de croiser les courses C1, C2 de translation des contacts mobiles 200, 210 respectivement du sectionneur de terre 20 et du sectionneur de barre 21.It is clear from reading the figure 4 that the control mechanism according to the invention makes it possible to cross the races C1, C2 of translation of the movable contacts 200, 210 respectively of the earthing switch 20 and of the bar switch 21.

Selon le mode de réalisation illustré aux figures 1 à 3, les moyens d'entraînement communs comprennent en outre une pièce 221 à deux bras 2210, 2211 formant des leviers distincts, cette pièce 221 étant fixée sur l'axe de rotation 220. L'un des leviers 2210 a une forme d'étrier. L'autre de ces leviers 2211 a une forme allongée droite.According to the embodiment illustrated in Figures 1 to 3 , the common drive means further comprises a piece 221 with two arms 2210, 2211 forming separate levers, the piece 221 being fixed on the axis of rotation 220. One of the levers 2210 has a stirrup shape. The other of these levers 2211 has a straight elongate shape.

Chacun des deux leviers 2210, 2211 de la pièce 221 fixée à l'axe 220 est articulé en un point d'articulation 222 avec une biellette 2220, 2221 formant également leviers d'accouplement.Each of the two levers 2210, 2211 of the part 221 attached to the axis 220 is articulated at a point of articulation 222 with a link 2220, 2221 also forming coupling levers.

Le levier d'accouplement 2220 articulé au levier 2210 a une forme incurvée afin de réduire les efforts radiaux susceptibles de se produire sur le contact de terre 200. Ce levier 2220 est lui-même articulé en un point d'articulation 223 au contact mobile 200 du sectionneur de terre 20.The coupling lever 2220 articulated to the lever 2210 has a curved shape in order to reduce the radial forces that may occur on the earth contact 200. This lever 2220 is itself articulated at a hinge point 223 to the moving contact 200 of the earthing switch 20.

Le levier d'accouplement 2221 articulé au levier 2211 a une forme allongée droite et est lui-même articulé en un point d'articulation 223 au contact mobile 210 du sectionneur de barre 21.The coupling lever 2221 articulated to the lever 2211 has a straight elongated shape and is itself hinged at a pivot point 223 to the moving contact 210 of the bar switch 21.

Les dimensions des leviers 2211, 2221, ainsi que leur agencement et celui de l'axe de rotation 220 sont choisis de telle manière que l'étrier 2211 entoure le contact mobile 210 auquel il est relié sur au moins une partie de sa course de translation C2.The dimensions of the levers 2211, 2221, as well as their arrangement and that of the axis of rotation 220 are chosen such that the stirrup 2211 surrounds the movable contact 210 to which it is connected over at least a part of its translational stroke C2.

Le contact mobile 210 du sectionneur de barre 21, relié au levier en étrier 2211 a une forme de tube creux (figure 2 par exemple)The movable contact 210 of the bar switch 21, connected to the stirrup lever 2211 has a hollow tube shape ( figure 2 for example)

L'articulation 223 du levier droit 2221 au tube creux 210 est agencée à l'intérieur du tube creux à une hauteur suffisante pour permettre à une partie de la longueur du levier droit 2221 d'y être logée sur la course de translation du tube creux C1.The hinge 223 of the right lever 2221 to the hollow tube 210 is arranged inside the hollow tube at a height sufficient to allow a portion of the length of the right lever 2221 to be accommodated thereon on the translation travel of the hollow tube C1.

Tel qu'illustré, le contact mobile 200 du sectionneur de terre 20 relié au levier de forme droite 2210 a une forme de tige pleine.As illustrated, the movable contact 200 of the earthing switch 20 connected to the straight form lever 2210 has a solid rod shape.

Le levier articulé 2220 entre le levier droit 2210 solidaire de l'axe de rotation 220 et la tige pleine 200 a une forme incurvée permettant de réduire les efforts radiaux sur la tige à proximité de sa position de fermeture (figure 2).The articulated lever 2220 between the right lever 2210 integral with the axis of rotation 220 and the solid rod 200 has a curved shape making it possible to reduce the radial forces on the rod close to its closed position ( figure 2 ).

Dans les appareils de commutation représentés, il est en outre prévu un tube de guidage 23 qui permet de guider en translation la tige de contact 200 de mise à la terre sur une grande partie de sa course de translation (figure 2 par exemple).In the switching devices shown, there is further provided a guide tube 23 which allows to guide in translation the contact rod 200 of grounding over a large part of its translation travel ( figure 2 for example).

Sur les figures 5A à 6 est représenté un autre mode de réalisation de l'invention.On the Figures 5A to 6 another embodiment of the invention is shown.

Selon ce mode le contact mobile 210 du sectionneur de barre 21 a une forme de tube creux et le contact mobile 200 du sectionneur de terre 20 a une forme de tige pleine.In this mode the movable contact 210 of the bar switch 21 has a hollow tube shape and the movable contact 200 of the earthing switch 20 has a solid rod shape.

Le mécanisme de commande comprend ici deux ensembles d'entraînement qui transforment chacun le mouvement de rotation de l'axe 220 en mouvement de translation à l'un des contacts mobiles 200, 210.The control mechanism here comprises two drive assemblies which each transform the rotational movement of the axis 220 into translational motion at one of the movable contacts 200, 210.

Chacun des ensembles comprend une pièce d'entraînement 2210, 2211 solidaire de l'axe de rotation 220. Les deux ensembles d'entraînement sont agencés en parallèle l'un de l'autre de sorte que lorsque les contacts mobiles 200, 210 sont dans une position intermédiaire entre leur position de fermeture et d'ouverture, ils sont immédiatement adjacents l'un de l'autre à une distance e suffisante pour permettre leur translation sans friction entre eux.Each of the assemblies comprises a drive part 2210, 2211 integral with the axis of rotation 220. The two drive assemblies are arranged in parallel with each other so that when the movable contacts 200, 210 are in an intermediate position between their closed position and opening, they are immediately adjacent to each other at a distance e sufficient to allow their translation without friction between them.

Tel qu'illustré en figure 5B, l'ensemble d'entraînement de la tige mobile 200 du sectionneur de terre 20 est constitué d'une paire de leviers 2210, 2220. Le levier d'entraînement 2210 solidaire de l'axe de rotation 220 est articulé directement à l'autre 2220 lui-même directement articulé à la tige mobile 200.As illustrated in Figure 5B , the driving assembly of the movable rod 200 of the earthing switch 20 consists of a pair of levers 2210, 2220. The driving lever 2210 integral with the axis of rotation 220 is articulated directly to the other 2220 itself directly articulated to the movable rod 200.

Tel qu'illustré en figure 6, une variante d'entraînement du tube creux mobile 210 du sectionneur de barre consiste en une came à disque 2211' solidaire de l'axe de rotation 220 et en une paire de leviers 2221, 226 articulés entre eux. Un des leviers 226 comprend une extrémité 2260 est fixée à un point d'articulation fixe 227. L'autre 2261 des extrémités du levier 226 est articulée au levier 2221 articulé tube creux mobile 210. Le levier 226 fixé au point 227 comprend un ergot 2262 agencé entre ses deux extrémités 2260, 2261 et logé dans une rainure 22110' pratiquée dans la came 2211' en formant un suiveur.As illustrated in figure 6 , a drive variant of the mobile hollow tube 210 of the bar disconnector consists of a disc cam 2211 'integral with the axis of rotation 220 and a pair of levers 2221, 226 hinged together. One of the levers 226 includes one end 2260 is attached to a point fixed hinge 227. The other 2261 of the ends of the lever 226 is articulated to the lever 2221 hinged mobile hollow tube 210. The lever 226 fixed at the point 227 comprises a lug 2262 arranged between its two ends 2260, 2261 and housed in a groove 22110 'formed in the cam 2211' forming a follower.

Les trois positions de commutation de l'appareil électrique représenté aux figures 1 à 6 sont les suivantes :

  • position N°1: sectionneur de terre 20 ouvert, sectionneur de barre 21 ouvert (figures 1 et 5A et 5B) ;
  • position N°2 : sectionneur de terre 20 fermé, sectionneur de barre 21 ouvert (figure 2),
  • position N°3 : sectionneur de terre 20 ouvert, sectionneur de barre 21 fermé (figures 3 et 6).
The three switching positions of the electrical apparatus shown in Figures 1 to 6 are the following :
  • position No. 1: open earthing switch 20, bar switch 21 open ( figures 1 and 5A and 5B );
  • position N ° 2: earthing switch 20 closed, bar switch 21 open ( figure 2 )
  • position No. 3: open earthing switch 20, bar switch 21 closed ( figures 3 and 6 ).

Les avantages de la solution selon l'invention qui vient d'être décrit sont nombreux :

  • grâce à l'imbrication des courses de translation des contacts mobiles, l'encombrement requis par un appareil de commutation selon l'invention est réduit par rapport aux appareils de commutation à sectionneur de barre et de terre combinés actuellement connus,
  • les forces latérales subies par les contacts mobiles selon l'invention sont réduites par rapport à ceux actuellement connus,
  • l'appareil de commutation selon l'invention fonctionne en toute sécurité avec une grande fiabilité.
The advantages of the solution according to the invention which has just been described are numerous:
  • thanks to the interlocking of the translation races of the moving contacts, the space required by a switching device according to the invention is reduced compared to the currently known combined bar and ground disconnector switching devices,
  • the lateral forces undergone by the movable contacts according to the invention are reduced compared to those currently known,
  • the switching device according to the invention operates safely with high reliability.

Claims (17)

  1. A control mechanism for an electrical switch apparatus (A) having two interrupters, for example a grounding disconnector (20) and a busbar disconnector (21), each of which comprises a pair of contacts that consists of a stationary switch contact (201; 211) and a movable switch contact (200; 210) that is movable in straight line movement whereby the switch contacts separate from each other during a switching operation, wherein the control mechanism includes a common actuator means (22) for actuating the movable contacts so as to permit one of the interrupters to open while keeping the other interrupter closed and vice versa, characterizing in that the geometry, dimensions of the mechanism and arrangement of the movable contacts (200, 210) and their actuator means (22, 220, 221, 2210, 2211, 2220, 2221, 222, 223) are such as to permit crossing of the straight line strokes (C1, C2) of the movable contacts.
  2. A control mechanism for a switch apparatus (A) according to claim 1, wherein:
    - • the common actuator means (22) comprises:
    • a rotatable shaft (220); and
    • a member (221) fastened to the rotatable shaft and consisting of two distinct levers (2210, 2211), one of which (2211) is U-shaped;
    - • said mechanism includes two pairs of levers (2210, 2220; 2211, 2221) that are articulated together, one of the levers in each pair (2210, 2211) being one of said distinct levers of said member (221) fastened to the rotatable shaft, and the other one of the levers of each pair (2220, 2221) being articulated to one of the movable contacts (200, 210);
    - • the dimensions of the levers (2210, 2211) and their arrangement, and the arrangement of the rotatable shaft, being such that the U-shaped lever (2211) surrounds the movable contact (210), to which it is coupled over at least part of its straight line stroke (C2).
  3. A control mechanism for a switch apparatus (A) according to claim 2, wherein:
    - • the movable contact (210), such as the movable contact of the busbar disconnector (21), that is coupled to the U-shaped lever (2211), is in the form of a hollow tube; and
    - • the other lever (221), which is articulated to said hollow tube and to the U-shaped lever, is of elongate shape, the articulation of the elongate lever (2221) to the hollow tube (210) being arranged inside the hollow tube at a height sufficient to permit part of the length of said elongate lever to be lodged therein over the stroke of the straight line movement of the hollow tube.
  4. A control mechanism for a switch apparatus (A) according to claim 3, wherein the hollow tube has a slot formed on a part of its height that extends from the end thereof opposite to the end that faces the associated stationary switch contact, said slot being arranged to permit the elongate lever to insert itself therein during the straight line movement of the hollow tube, and to increase the length of said movement from its open position to its closed position.
  5. A control mechanism for a switch apparatus (A) according to claim 3 or claim 4, wherein the hollow tube has a slot formed on a part of its height that extends from the end thereof opposite to the end that faces the associated stationary switch contact, said slot being arranged to permit the elongate lever to insert itself therein during the straight line movement of the hollow tube, and to increase the length of the straight line stroke of the other movable contact from its open position to its closed position.
  6. A control mechanism for a switch apparatus (A) according to any one of claims 2 to 5, wherein:
    - • the other one (210) of the levers of said member (221) fastened to the rotatable shaft (220) is of straight shape; and
    - • the movable contact (200), such as the movable contact of the grounding disconnector, that is coupled to the straight lever (2210), is in the form of a solid rod.
  7. A control mechanism for a switch apparatus (A) according to claim 6, wherein the lever (2220) that is articulated between the straight lever (210) fastened to the rotatable shaft and the solid rod (200) is of curved shape such as to enable radial forces on said rod to be reduced in proximity to its closed position.
  8. A control mechanism for a switch apparatus (A) according to claim 7, wherein the solid rod has a slot formed on a part of its height that extends from the end thereof opposite to the end that faces the associated stationary switch contact, said slot being arranged to permit the curved lever to insert itself therein during the straight line movement of said rod, and to increase the length of the straight line stroke from its open position to its closed position, and at the same time the amount of the straight line stroke of the hollow tube.
  9. A control mechanism according to claim 1, wherein:
    - • one of the movable contacts (210), such as the movable contact of the busbar disconnecter (21), is in the form of a hollow tube;
    - • the other one of the movable contacts (200), such as the movable contact of the grounding disconnector, is in the form of a solid rod;
    - • the common actuator means (22) include a rotatable shaft (220); and
    - • the mechanism has two actuating assemblies, each adapted to convert the rotary movement of the shaft (220) into straight line movement of one of the movable contacts, each said assembly comprising an actuating member (210, 2211, 2211') fastened to said rotatable shaft, the two actuating assemblies being arranged in parallel with each other in such a way that, when the movable solid rod and hollow tube (200, 210) are in an intermediate position between their closed position and their open position, they are immediately adjacent to each other, being spaced apart by a distance (e) sufficient to permit frictionless straight line relative movement as between the solid rod and hollow tube.
  10. A control mechanism according to claim 9, wherein at least one of the two actuating assemblies consists of a pair of levers (2210, 2220), one of which is an actuating lever (2210) fastened to the rotatable shaft, the other (2220) being articulated to one of the movable contacts (200) and to said actuating lever (2210).
  11. A control mechanism according to claim 9 or claim 10, wherein at least one of the two actuating assemblies, such as that for the busbar disconnector movable contact, consists of a disk cam (2211') fastened to the rotatable shaft and a pair of levers (226, 2221), one of said levers (226) having one end (2260) articulated to a stationary pivot point (227), while the other end (2261) of the same lever is articulated to the other lever (2221) of said pair, which is itself articulated to one of the movable contacts (200, 210), the lever articulated at a stationary pivot point having a spigot (2262) located between its two ends and engaged in a cam groove (2110') that is formed in the cam (2211'), so that the spigot constitutes a cam follower, and wherein the geometry, the length and arrangement of said pair of levers, and the cam groove profile, are such that an additional drive ratio exists between the disk cam and the associated movable contact.
  12. Electrical switch apparatus (A) comprising a casing (2A) in which the movable contacts (200, 210) of two interrupters, such as a busbar disconnector (21) and a grounding disconnector (20) are at least partially mounted, and further comprising a control mechanism according to any preceding claim.
  13. Electrical switch apparatus (A) according to claim 12, further comprising a guide tube (23) for guiding one of the movable contacts (200) over part of its stroke (C1) in straight line movement.
  14. Electrical switch apparatus according to claim 13, wherein the movable contact guided by said guide tube is the grounding rod.
  15. A medium and high voltage gas insulated switch (GIS) comprising, for at least one phase, a switch apparatus (A) according to any one of claims 12 to 14.
  16. A gas insulated switch (GIS) wherein, for each phase, the switching casing (2A) of the switch apparatus according to 12 to 14 is mounted in its own metal casing (3A).
  17. A gas insulated switch (GIS) according to claim 16, wherein the three metal casings are coupled together by a linkage system adapted to be displaced in straight line movement by an actuator, and adapted to set simultaneously in rotation the control mechanisms of said apparatus.
EP09172750A 2008-10-14 2009-10-12 Electrical switching apparatus equipped with two switches, such as a busbar section isolator and an earthing switch and comprising driving means shared with the mobile contacts of the switches Active EP2178100B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0856952A FR2937175B1 (en) 2008-10-14 2008-10-14 ELECTRICAL SWITCHING APPARATUS HAVING TWO SWITCHES, SUCH AS A BAR BREAKER AND A GROUND DISCONNECT AND COMPRISING COMMON TRAINING MEANS OF THE MOBILE SWITCH CONTACTS.

Publications (2)

Publication Number Publication Date
EP2178100A1 EP2178100A1 (en) 2010-04-21
EP2178100B1 true EP2178100B1 (en) 2011-11-30

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EP09172750A Active EP2178100B1 (en) 2008-10-14 2009-10-12 Electrical switching apparatus equipped with two switches, such as a busbar section isolator and an earthing switch and comprising driving means shared with the mobile contacts of the switches

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US (1) US8389884B2 (en)
EP (1) EP2178100B1 (en)
JP (1) JP5528765B2 (en)
KR (1) KR101736935B1 (en)
CN (1) CN101728784B (en)
AT (1) ATE535925T1 (en)
FR (1) FR2937175B1 (en)
RU (1) RU2516446C2 (en)

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EP3389069B1 (en) * 2017-04-11 2019-12-11 Microelettrica Scientifica S.p.A. Improved breaker for high d.c. current or voltage applications, for instance industrial and/or railways applications

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Also Published As

Publication number Publication date
EP2178100A1 (en) 2010-04-21
FR2937175A1 (en) 2010-04-16
US8389884B2 (en) 2013-03-05
CN101728784A (en) 2010-06-09
KR101736935B1 (en) 2017-05-17
KR20100041677A (en) 2010-04-22
RU2009137890A (en) 2011-04-20
ATE535925T1 (en) 2011-12-15
JP5528765B2 (en) 2014-06-25
RU2516446C2 (en) 2014-05-20
JP2010097943A (en) 2010-04-30
CN101728784B (en) 2015-05-20
FR2937175B1 (en) 2010-12-03
US20100089732A1 (en) 2010-04-15

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