EP0707330B9 - Load break switch - Google Patents

Load break switch Download PDF

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Publication number
EP0707330B9
EP0707330B9 EP95402257A EP95402257A EP0707330B9 EP 0707330 B9 EP0707330 B9 EP 0707330B9 EP 95402257 A EP95402257 A EP 95402257A EP 95402257 A EP95402257 A EP 95402257A EP 0707330 B9 EP0707330 B9 EP 0707330B9
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
case
contact
vacuum bottle
rod
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
EP95402257A
Other languages
German (de)
French (fr)
Other versions
EP0707330B1 (en
EP0707330A1 (en
Inventor
Lucien Sannino
Florent Eynaud
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grid Solutions SAS
Original Assignee
GEC Alsthom T&D SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEC Alsthom T&D SA filed Critical GEC Alsthom T&D SA
Publication of EP0707330A1 publication Critical patent/EP0707330A1/en
Application granted granted Critical
Publication of EP0707330B1 publication Critical patent/EP0707330B1/en
Publication of EP0707330B9 publication Critical patent/EP0707330B9/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5833—Electric connections to or between contacts; Terminals comprising an articulating, sliding or rolling contact between movable contact and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52—Cooling of switch parts
    • H01H2009/526—Cooling of switch parts of the high voltage switches
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—Terminal arrangements
    • H01H2033/6613—Cooling arrangements directly associated with the terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52—Cooling of switch parts

Definitions

  • the present invention relates to improvements to circuit breakers.
  • a multi-pole self-disconnecting circuit breaker includes, for each pole, an insulating envelope enclosing a vacuum interrupter, the envelope comprising at first end a first contact connected to a first terminal of the bulb and intended to cooperate with a bar of a set of bars, and at a second end a second contact connected to a second terminal of the vacuum interrupter and intended to cooperate with a cable from a set of cables, the envelopes of the different poles being fixed to the same metal profile along which is placed an operating shaft common to poles which is operated by a command contained in a box integral with the profile, the profile being actuated in rotation to ensure the sectioning function of the device.
  • the insulating envelope comprises a first part intended for house the vacuum bulb and a second part inside from which is coaxially arranged a connecting tube electrically the vacuum interrupter and the second contact, said tube containing inside a rod connected to the contact mobile vacuum bulb and secondly to a mechanism operation of vacuum interrupter.
  • An object of the present invention is to industrialize the product which has been defined above, in order to achieve a lowered cost apparatus; for that a certain a number of technical improvements have been made, leading in particular to a reduced number of parts and a reduced assembly time.
  • the subject of the invention is a self-disconnecting circuit breaker multipolar comprising, for each pole, a molded insulating jacket comprising a first part cylindrical enclosing an extended vacuum interrupter axially by a second part, the envelope comprising a first end a first contact connected to a first bulb terminal and intended to cooperate with a bar of a set of bars, and at a second end a second contact connected to a second terminal of the vacuum interrupter and intended to cooperate with a cable from a set of cables, the envelopes of different poles being attached to the same metal profile along which a tree of maneuver common to the poles which is actuated by a command contained in a box integral with the profile, the second part of the envelope enclosing in particular a metal tube for the passage of the current and a rod for the operation of the vacuum interrupter, the profile being actuated in rotation to ensuring the sectioning function of the device, said tube metal being secured to the insulating envelope during molding thereof, characterized in that said tube metallic at one
  • the envelope includes a metal part inserted during the molding, having one end outside the envelope and serving of fixed articulation point to an operating mechanism of the vacuum interrupter comprising a connecting rod articulated the end of the vacuum bulb operating rod, a insulating arm and a connecting rod connected to said control shaft.
  • the circuit breaker of the invention comprises means for adjust the distance between the contacts from the outside the vacuum interrupter, said means comprise a fixed shim by screwing at the end of the operating rod the bulb, this wedge resting on a ring to which said connecting rod is articulated and on a sheath surrounding the rod and itself surrounded by a spring bearing on one end of the sheath and on said ring.
  • the circuit breaker according to the invention comprises a wear indication of the vacuum bulb contacts, visible and accessible at the base of the pole, this indication being the distance separating said shim from said ring in position on the circuit breaker.
  • the envelope includes, when molded, two fins framing the first contact.
  • the envelope comprises, in the vicinity of the junction between the two parts of the envelope, a metal piece placed during the molding of the envelope and having a annular volume coaxial with the envelope and communicating, by holes with the inside of the tube.
  • Figure 1 there is shown in axial section, a pole of a self-disconnecting circuit breaker including improvements of the invention.
  • the pole includes an insulating envelope 1 comprising a first part 1A enclosing a vacuum interrupter 2 and a second part 1B containing elements described below for the passage of the current and the operation of the bulb to empty.
  • the envelope is made by molding a resin synthetic.
  • the envelope comprises a metal part 4, in the form of block, one face of which is flush with the surface of the envelope for fixing the pole to the metal support rail 5.
  • the block 4 has at least one threaded bore to receive one or more fixing screws.
  • Block 4 is inserted into the envelope during molding thereof. This insert is advantageously placed at the junction between the parts 1A and 1B of the envelope.
  • the metal insert 4 has dimensions larger than those required by the simple function of a fixing member, so that it also allow to contribute to the evacuation of calories produced by the flow of current.
  • the block 4 is preferably made of aluminum or copper.
  • the tube 7, intended on the one hand to conduct the current to inside the envelope by connecting the vacuum interrupter to the second contact of the pole, and on the other hand to enclose the rod 8 of the vacuum interrupter, extended by a rod 8A, is overmolded during the molding of the envelope.
  • its lower part 7A is flared by 90 ° from so as to allow the joining of a plate 9 constituting the second contact of the pole.
  • the solidarity of tube 7 and plate 9 is advantageously made at by means of screws 11 overmolded with the tube 7 during the molding of the casing and cooperating with nuts 12.
  • the insulating envelope of the pole comprises, coming from molding, two parallel side fins framing the first contact 13 of the pole; one of these fins, referenced 14 is visible in figure 1. These fins contribute to improvement of the pole dielectric strength.
  • the operating mechanism comprises, in addition to the shaft 15 movable in translation in the plane perpendicular to the plane in the figure, a bent link 16 articulated on the one hand to the shaft 15 and on the other hand to a rod 17A extending a insulating arm 17: the angled link is articulated to an axis fixed 16A secured to profile 5; the insulating arm 17 is articulated to a connecting rod 18 itself articulated to the rod 8A.
  • the connecting rod 18 pivots around a fixed point A and, according to the invention, this fixed point A is located at the end of a metal element 20 inserted during molding, in the body of envelope 1. This provision ensures a precision of vacuum bulb control movements.
  • the connecting rod 18 is indirectly hinged to rod 8A; the connecting rod 18 is articulated to a ring 21 surrounding the end a sheath 22 itself surrounding the end of the rod 8; a spring 23 exerts pressure between the ring 21 and the end of the sheath 22; at the end of the rod 8A, which is threaded, a shim 24 held in place by a nut 25, adjusts the distance of contacts 2A and 2B from the vacuum interrupter.
  • the ring 21 and wedge 24 In the engaged position (see Fig. 3), the ring 21 and wedge 24 is no longer in contact. The distance between them decreases in the same way as the wear of the contacts of the vacuum interrupter; the measurement of this distance allows to have a visual indication of said wear accessible at the base of the pole.
  • the reference 30 designates a sliding contact for electrically connecting the movable rod 8 of the vacuum interrupter and the tube 7.
  • This contact is provided with channels 31 allowing ventilation between the lower part of the envelope and the space 32 between the vacuum interrupter and the envelope 1A; this ventilation, combined with the cooling produced by insert 4, provides sufficient cooling.
  • measures are planned additional cooling, illustrated in the figure 2, which represents in partial axial section, a pole according to an alternative embodiment. These measures consist of provide a metal part 35, preferably copper, inserted during the molding of the envelope, and which has a annular volume 36 communicating through holes 37 in the tube 7 with the interior thereof. In this way, it produced by natural draft strong ventilation indicated in figure 3 by the arrows.
  • the reference 40 designates a measuring torus whose role has been described in the aforementioned document.
  • the pole is a simple manufacturing industrial product with a number limited parts and ease of assembly which reduce them the cost, safe operation thanks to a perfect cooling in service, adjustment possibilities as well as an indication of wear of the bulb contacts at empty.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Keying Circuit Devices (AREA)
  • Lock And Its Accessories (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Valve Device For Special Equipments (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

The circuit breaker includes the vacuum tube (2) which has contact breakers (2A,2B) and an actuating rod (8) which passes inside a lower tubular section (1B) with an inner metallic section (7). The two units are enclosed by a moulded synthetic resin section (1). The lower end of the tubular section allows passage of the actuating element rod extension (8A) and the outer metallic section clamps onto a fixing block (9). Movement of a side arm (17) effects the make/break circuit by moving the actuating element rod.

Description

La présente invention concerne des perfectionnements aux disjoncteurs auto-sectionneurs.The present invention relates to improvements to circuit breakers.

Un disjoncteur selon le preambule de la revendication 1 a été décrit notamment dans la demande de brevet EP-A-0 543 683 (26 Mai 1993).A circuit breaker according to the preamble of claim 1 has been described in particular in the patent application EP-A-0 543 683 (May 26, 1993).

Un disjoncteur auto-sectionneur multipolaire comprend, pour chaque pôle, une enveloppe isolante enfermant une ampoule à vide, l'enveloppe comportant à une première extrémité un premier contact relié à une première borne de l'ampoule et destiné à coopérer avec une barre d'un jeu de barres, et à une seconde extrémité un second contact relié à une seconde borne de l'ampoule à vide et destiné à coopérer avec un câble d'un jeu de câbles, les enveloppes des différents pôles étant fixées à un même profilé métallique le long duquel est placé un arbre de manoeuvre commun aux pôles qui est actionné par une commande contenue dans un coffret solidaire du profilé, le profilé étant actionné en rotation pour assurer la fonction sectionnement de l'appareil.A multi-pole self-disconnecting circuit breaker includes, for each pole, an insulating envelope enclosing a vacuum interrupter, the envelope comprising at first end a first contact connected to a first terminal of the bulb and intended to cooperate with a bar of a set of bars, and at a second end a second contact connected to a second terminal of the vacuum interrupter and intended to cooperate with a cable from a set of cables, the envelopes of the different poles being fixed to the same metal profile along which is placed an operating shaft common to poles which is operated by a command contained in a box integral with the profile, the profile being actuated in rotation to ensure the sectioning function of the device.

Ainsi qu'il est indiqué dans le document précité, l'enveloppe isolante comprend une première partie destinée à loger l'ampoule à vide et une seconde partie à l'intérieur de laquelle est disposé de manière coaxiale un tube reliant électriquement l'ampoule à vide et le second contact, ledit tube contenant à son intérieur une tige reliée au contact mobile de l'ampoule à vide et d'autre part à un mécanisme de manoeuvre des ampoules à vide.As indicated in the aforementioned document, the insulating envelope comprises a first part intended for house the vacuum bulb and a second part inside from which is coaxially arranged a connecting tube electrically the vacuum interrupter and the second contact, said tube containing inside a rod connected to the contact mobile vacuum bulb and secondly to a mechanism operation of vacuum interrupter.

Un but de la présente invention est d'industrialiser le produit qui a été défini plus haut, en vue de réaliser un appareil de prix de revient abaissé; pour cela un certain nombres d'améliorations techniques ont été apportés, conduisant notamment à un nombre de pièces plus réduit et un temps de montage diminué.An object of the present invention is to industrialize the product which has been defined above, in order to achieve a lowered cost apparatus; for that a certain a number of technical improvements have been made, leading in particular to a reduced number of parts and a reduced assembly time.

L'invention a pour objet un diisjoncteur auto-sectionneur multipolaire comprenant, pour chaque pôle, une enveloppe isolante moulée comprenant une première partie cylindrique enfermant une ampoule à vide prolongée axialement par une seconde partie, l'enveloppe comportant à une première extrémité un premier contact relié à une première borne de l'ampoule et destiné à coopérer avec une barre d'un.jeu de barres, et à une seconde extrémité un second contact relié à une seconde borne de l'ampoule à vide et destiné à coopérer avec un câble d'un jeu de câbles, les enveloppes des différents pôles étant fixées à un même profilé métallique le long duquel est placé un arbre de manoeuvre commun aux pôles qui est actionné par une commande contenue dans un coffret solidaire du profilé, la seconde partie de l'enveloppe enfermant notamment un tube métallique pour le passage du courant et une tige pour la manoeuvre de l'ampoule à vide, le profilé étant actionné en rotation pour assurer la fonction sectionnement de l'appareil, ledit tube métallique étant solidarisé à l'enveloppe isolante lors du moulage de celle-ci, caractérisé en ce que ledit tube métallique présente à une extrémité une partie évasée de 90° pour sa fixation à une plaque constituant ledit second contact.The subject of the invention is a self-disconnecting circuit breaker multipolar comprising, for each pole, a molded insulating jacket comprising a first part cylindrical enclosing an extended vacuum interrupter axially by a second part, the envelope comprising a first end a first contact connected to a first bulb terminal and intended to cooperate with a bar of a set of bars, and at a second end a second contact connected to a second terminal of the vacuum interrupter and intended to cooperate with a cable from a set of cables, the envelopes of different poles being attached to the same metal profile along which a tree of maneuver common to the poles which is actuated by a command contained in a box integral with the profile, the second part of the envelope enclosing in particular a metal tube for the passage of the current and a rod for the operation of the vacuum interrupter, the profile being actuated in rotation to ensuring the sectioning function of the device, said tube metal being secured to the insulating envelope during molding thereof, characterized in that said tube metallic at one end has a 90 ° flared part for its attachment to a plate constituting said second contact.

Selon une autre caractéristique de l'invention, l'enveloppe comprend une pièce métallique insérée lors du moulage, ayant une extrémité hors de l'enveloppe et servant de point d'articulation fixe à un mécanisme de manoeuvre de l'ampoule à vide comprenant une bielle articulée à l'extrémité de la tige de manoeuvre de l'ampoule à vide, un bras isolant et un embiellage relié audit arbre de commande.According to another characteristic of the invention, the envelope includes a metal part inserted during the molding, having one end outside the envelope and serving of fixed articulation point to an operating mechanism of the vacuum interrupter comprising a connecting rod articulated the end of the vacuum bulb operating rod, a insulating arm and a connecting rod connected to said control shaft.

Le disjoncteur de l'invention comprend des moyens pour régler, de l'extérieur, la distance entre les contacts de l'ampoule à vide, lesdits moyens comprennent une cale fixée par vissage à l'extrémité de la tige de manoeuvre de l'ampoule, cette cale prenant appui sur une bague à laquelle ladite bielle est articulée et sur un fourreau entourant la tige et lui-même entouré par un ressort prenant appui sur une extrémité du fourreau et sur ladite bague. The circuit breaker of the invention comprises means for adjust the distance between the contacts from the outside the vacuum interrupter, said means comprise a fixed shim by screwing at the end of the operating rod the bulb, this wedge resting on a ring to which said connecting rod is articulated and on a sheath surrounding the rod and itself surrounded by a spring bearing on one end of the sheath and on said ring.

Le disjoncteur selon l'invention comprend une indication d'usure des contacts de l'ampoule à vide, visible et accessible à la base du pôle, cette indication étant la distance séparant ladite cale de ladite bague en position enclenchée du disjoncteur.The circuit breaker according to the invention comprises a wear indication of the vacuum bulb contacts, visible and accessible at the base of the pole, this indication being the distance separating said shim from said ring in position on the circuit breaker.

L'enveloppe comprend, venue de moulage, deux ailettes encadrant le premier contact.The envelope includes, when molded, two fins framing the first contact.

L'enveloppe comporte, au voisinage de la jonction entre les deux parties de l'enveloppe, une pièce métallique placée lors du moulage de l'enveloppe et présentant un volume annulaire coaxial à l'enveloppe et communiquant, par des trous avec l'intérieur du tube.The envelope comprises, in the vicinity of the junction between the two parts of the envelope, a metal piece placed during the molding of the envelope and having a annular volume coaxial with the envelope and communicating, by holes with the inside of the tube.

L'invention est maintenant expliquée en détail, en référence au dessin annexé dans lequel:

  • la figure 1 est une vue en coupe axiale d'un pôle de disjoncteur auto-sectionneur selon l'invention, le disjoncteur étant en position déclenchée,
  • la figure 2 est une vue en coupe axiale du même pôle, le disjoncteur étant en position enclenchée,
  • la figure 3 est une vue partielle en coupe axiale d'un pôle selon une variante de réalisation de l'invention".
The invention is now explained in detail, with reference to the accompanying drawing in which:
  • FIG. 1 is a view in axial section of a pole of a self-disconnecting circuit breaker according to the invention, the circuit breaker being in the tripped position,
  • FIG. 2 is a view in axial section of the same pole, the circuit breaker being in the engaged position,
  • FIG. 3 is a partial view in axial section of a pole according to an alternative embodiment of the invention ".

Dans la figure 1, on a représenté en coupe axiale, un pôle d'un disjoncteur auto-sectionneur comprenant les améliorations de l'invention.In Figure 1, there is shown in axial section, a pole of a self-disconnecting circuit breaker including improvements of the invention.

Le pôle comprend une enveloppe isolante 1 comprenant une première partie 1A enfermant une ampoule à vide 2 et une seconde partie 1B contenant des éléments décrits plus loin pour le passage du courant et la manoeuvre de l'ampoule à vide. L'enveloppe est réalisée par moulage d'une résine synthétique.The pole includes an insulating envelope 1 comprising a first part 1A enclosing a vacuum interrupter 2 and a second part 1B containing elements described below for the passage of the current and the operation of the bulb to empty. The envelope is made by molding a resin synthetic.

Selon une première caractéristique de l'invention, l'enveloppe comprend une pièce métallique 4, en forme de bloc, dont une face affleure à la surface de l'enveloppe pour la fixation du pôle au profilé-support métallique 5. Pour cela, le bloc 4 possède au moins un alésage taraudé pour recevoir une ou plusieurs vis de fixation. Le bloc 4 est inséré dans l'enveloppe lors du moulage de celle-ci. Cet insert est placé avantageusement à la jonction entre les parties 1A et 1B de l'enveloppe. L'insert métallique 4 présente des dimensions supérieures à celles nécessitées par la simple fonction d'organe de fixation, de manière à lui permettre en outre de contribuer à l'évacuation des calories produites par le passage du courant. Pour ces raisons, le bloc 4 est réalisé préférentiellement en aluminium ou en cuivre.According to a first characteristic of the invention, the envelope comprises a metal part 4, in the form of block, one face of which is flush with the surface of the envelope for fixing the pole to the metal support rail 5. For this, the block 4 has at least one threaded bore to receive one or more fixing screws. Block 4 is inserted into the envelope during molding thereof. This insert is advantageously placed at the junction between the parts 1A and 1B of the envelope. The metal insert 4 has dimensions larger than those required by the simple function of a fixing member, so that it also allow to contribute to the evacuation of calories produced by the flow of current. For these reasons, the block 4 is preferably made of aluminum or copper.

Selon une autre caractéristique de l'invention, le tube 7, destiné d'une part à conduire le courant à l'intérieur de l'enveloppe en reliant l'ampoule à vide au second contact du pôle, et d'autre part à enfermer la tige de manoeuvre 8 de l'ampoule à vide, prolongée par une tige 8A, est surmoulé lors du moulage de l'enveloppe. Par ailleurs, sa partie inférieure 7A est évasée de 90° de manière à permettre la solidarisation d'une plaque 9 constituant le second contact du pôle. La solidarisation du tube 7 et de la plaque 9 est avantageusement réalisée au moyen de vis 11 surmoulées avec le tube 7 lors du moulage de l'enveloppe et coopérant avec des écrous 12.According to another characteristic of the invention, the tube 7, intended on the one hand to conduct the current to inside the envelope by connecting the vacuum interrupter to the second contact of the pole, and on the other hand to enclose the rod 8 of the vacuum interrupter, extended by a rod 8A, is overmolded during the molding of the envelope. Through elsewhere, its lower part 7A is flared by 90 ° from so as to allow the joining of a plate 9 constituting the second contact of the pole. The solidarity of tube 7 and plate 9 is advantageously made at by means of screws 11 overmolded with the tube 7 during the molding of the casing and cooperating with nuts 12.

Selon une autre caractéristique de l'invention, l'enveloppe isolante du pôle comprend, venant de moulage, deux ailettes latérales parallèles encadrant le premier contact 13 du pôle; l'une des ces ailettes, référencée 14 est visible dans la figure 1. Ces ailettes contribuent à l'amélioration de la tenue diélectrique du pôle.According to another characteristic of the invention, the insulating envelope of the pole comprises, coming from molding, two parallel side fins framing the first contact 13 of the pole; one of these fins, referenced 14 is visible in figure 1. These fins contribute to improvement of the pole dielectric strength.

Une autre caractéristique de l'invention concerne le mécanisme permettant de communiquer le mouvement de l'arbre de commande 15 à la tige de manoeuvre 8-8A de l'ampoule à vide. Le mécanisme de manoeuvre comprend, outre l'arbre 15 mobile en translation dans le plan perpendiculaire au plan de la figure, une biellette coudée 16 articulée d'une part à l'arbre 15 et d'autre part à une tige 17A prolongeant un bras isolant 17: la biellette coudée est articulée à un axe fixe 16A solidarisé au profilé 5; le bras isolant 17 est articulée à une bielle 18 elle-même articulée à la tige 8A. La bielle 18 pivote autour d'un point fixe A et, selon l'invention, ce point fixe A est situé à l'extrémité d'un élément métallique 20 inséré lors du moulage, dans le corps de l'enveloppe 1. Cette disposition permet d'assurer une précision des mouvements de commande de l'ampoule à vide.Another characteristic of the invention relates to the mechanism to communicate the movement of the tree 15 to the operating rod 8-8A of the bulb empty. The operating mechanism comprises, in addition to the shaft 15 movable in translation in the plane perpendicular to the plane in the figure, a bent link 16 articulated on the one hand to the shaft 15 and on the other hand to a rod 17A extending a insulating arm 17: the angled link is articulated to an axis fixed 16A secured to profile 5; the insulating arm 17 is articulated to a connecting rod 18 itself articulated to the rod 8A. The connecting rod 18 pivots around a fixed point A and, according to the invention, this fixed point A is located at the end of a metal element 20 inserted during molding, in the body of envelope 1. This provision ensures a precision of vacuum bulb control movements.

Selon une autre caractéristique de l'invention, la bielle 18 est articulée indirectement à la tige 8A; la bielle 18 est articulée à une bague 21 entourant l'extrémité d'un fourreau 22 entourant lui-même l'extrémité de la tige 8; un ressort 23 exerce une pression entre la bague 21 et l'extrémité du fourreau 22; à l'extrémité de la tige 8A, qui est filetée, une cale 24 maintenue en place par un écrou 25, permet d'ajuster la distance des contacts 2A et 2B de l'ampoule à vide.According to another characteristic of the invention, the connecting rod 18 is indirectly hinged to rod 8A; the connecting rod 18 is articulated to a ring 21 surrounding the end a sheath 22 itself surrounding the end of the rod 8; a spring 23 exerts pressure between the ring 21 and the end of the sheath 22; at the end of the rod 8A, which is threaded, a shim 24 held in place by a nut 25, adjusts the distance of contacts 2A and 2B from the vacuum interrupter.

En position enclenchée (voir Fig. 3), la bague 21 et la cale 24 ne sont plus en contact. La distance les séparant diminue de la même manière que l'usure des contacts de l'ampoule à vide; la mesure de cette distance permet d'avoir une indication visuelle de ladite usure accessible à la base du pôle.In the engaged position (see Fig. 3), the ring 21 and wedge 24 is no longer in contact. The distance between them decreases in the same way as the wear of the contacts of the vacuum interrupter; the measurement of this distance allows to have a visual indication of said wear accessible at the base of the pole.

On notera que dans la figure, la référence 30 désigne un contact glissant permettant de relier électriquement la tige mobile 8 de l'ampoule à vide et le tube 7. Ce contact est muni de canaux 31 permettant d'assurer une ventilation entre la partie inférieure de l'enveloppe et l'espace 32 compris entre l'ampoule à vide et l'enveloppe 1A; cette ventilation, conjuguée au refroidissement produit par l'insert 4, assure un refroidissement suffisant. Pour les très fortes intensités, il est prévu des mesures de refroidissement complémentaires, illustrées dans la figure 2, qui représente en coupe axiale partielle, un pôle selon une variante de réalisation. Ces mesures consistent à prévoir une pièce métallique 35, de préférence en cuivre, insérée lors du moulage de l'enveloppe, et qui présente un volume annulaire 36 communiquant par des trous 37 dans le tube 7 avec l'intérieur de celui-ci. De la sorte, il se produit par tirage naturel une forte ventilation indiquée dans la figure 3 par les flèches.Note that in the figure, the reference 30 designates a sliding contact for electrically connecting the movable rod 8 of the vacuum interrupter and the tube 7. This contact is provided with channels 31 allowing ventilation between the lower part of the envelope and the space 32 between the vacuum interrupter and the envelope 1A; this ventilation, combined with the cooling produced by insert 4, provides sufficient cooling. For the very high intensities, measures are planned additional cooling, illustrated in the figure 2, which represents in partial axial section, a pole according to an alternative embodiment. These measures consist of provide a metal part 35, preferably copper, inserted during the molding of the envelope, and which has a annular volume 36 communicating through holes 37 in the tube 7 with the interior thereof. In this way, it produced by natural draft strong ventilation indicated in figure 3 by the arrows.

On notera que dans les figures, la référence 40 désigne un tore de mesure dont le rôle a été décrit dans le document précité.Note that in the figures, the reference 40 designates a measuring torus whose role has been described in the aforementioned document.

Grâce aux dispositions de l'invention, le pôle est un produit industriel de fabrication simple, avec un nombre limité de pièces et une facilité de montage qui en réduisent le coût, de fonctionnement sûr grâce à un parfait refroidissement en service, des possibilités de réglage ainsi qu'une indication d'usure des contacts de l'ampoule à vide.Thanks to the provisions of the invention, the pole is a simple manufacturing industrial product with a number limited parts and ease of assembly which reduce them the cost, safe operation thanks to a perfect cooling in service, adjustment possibilities as well as an indication of wear of the bulb contacts at empty.

Claims (6)

  1. A multi-pole self-disconnecting circuit breaker comprising, for each pole, a molded insulating case (1) comprising a cylindrical first portion (1A) containing a vacuum bottle (2) extended axially by a second portion (1B), the case including, at a first end, a first contact (13) connected to a first terminal of the bottle and designed to co-operate with one bus bar from a set of bus bars, and at a second end, a second contact (9) connected to a second terminal of the vacuum bottle and designed to co-operate with one cable from a set of cables, the cases of the various poles being fixed to a common metal bar (5) along which there is placed a drive shaft (15) common to the poles and actuated by a control contained in a box secured to the bar, the second portion (1B) of the case containing in particular a metal tube (7) for passing electricity and a rod (8-8A) for driving the vacuum bottle, the bar (5) being turned to provide the disconnection function of the device, said metal tube (7) being secured to the insulating case during molding thereof, the circuit breaker being characterized in that said metal tube (7) has, at one end, a portion (7A) flared at 90° to enable it to be fixed to a plate (9) constituting said second contact.
  2. A circuit breaker according to claim 1, characterized in that the case has a metal piece (20) inserted during molding, with one end lying outside the case and serving as a fixed hinge point for a mechanism for driving the vacuum bottle and comprising a link (18) hinged at one end to the vacuum bottle drive rod (8-8A), an insulating arm (17), and a linkage (16-17A) connected to said control shaft (16).
  3. A circuit breaker according to claim 1 or claim 2, characterized in that it includes means for adjusting, from the outside, the distance between the contacts (2A, 2B) of the vacuum bottle, said means comprising a spacer (24) screwed to the end of the bottle drive rod (8-8A), said spacer (24) bearing against a ring (21) to which said link (18) is hinged, and against a bushing (22) surrounding the rod (8A) and itself surrounded by a spring (23) bearing against one end of the bushing (22) and against said ring (21).
  4. A circuit breaker according to claim 3, characterized in that it includes an indication of vacuum bottle contact wear that is visible and accessible at the base of the pole, said indication being the distance between said spacer (24) and said ring (21) when the circuit breaker is in the engaged position.
  5. A circuit breaker according to any one of claims 1 to 4, characterized in that the case has two fins (14) integrally molded on either side of the first contact (13).
  6. A circuit breaker according to any one of claims 1 to 5, characterized in that, in the vicinity of the junction between its two portions (1A, 1B), the case has a metal piece (35) put into position during molding of the case and presenting an annular volume (36) coaxial with the case and communicating via holes (37) with the inside of the tube (7).
EP95402257A 1994-10-14 1995-10-09 Load break switch Expired - Lifetime EP0707330B9 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9412295 1994-10-14
FR9412295A FR2725830B1 (en) 1994-10-14 1994-10-14 CIRCUIT BREAKER

Publications (3)

Publication Number Publication Date
EP0707330A1 EP0707330A1 (en) 1996-04-17
EP0707330B1 EP0707330B1 (en) 2001-08-22
EP0707330B9 true EP0707330B9 (en) 2002-05-15

Family

ID=9467873

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Application Number Title Priority Date Filing Date
EP95402257A Expired - Lifetime EP0707330B9 (en) 1994-10-14 1995-10-09 Load break switch

Country Status (5)

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EP (1) EP0707330B9 (en)
AT (1) ATE204676T1 (en)
DE (1) DE69522282T2 (en)
ES (1) ES2159612T3 (en)
FR (1) FR2725830B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004047260B4 (en) * 2004-09-24 2006-08-03 Siemens Ag Insulating housing with ventilation shaft
CN103187211A (en) * 2011-12-29 2013-07-03 西门子公司 Breaker transmission device and breaker thereof
DE102017206754A1 (en) 2017-04-21 2018-10-25 Siemens Aktiengesellschaft Switchgear drive arrangement
CN110911217A (en) * 2019-11-26 2020-03-24 深圳市安达工业设计有限公司 Novel vacuum switch tube convenient to connect
EP4027365A1 (en) 2021-01-07 2022-07-13 ABB Schweiz AG A switching apparatus for electric systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2322372C3 (en) * 1973-04-30 1980-06-04 Siemens Ag, 1000 Berlin Und 8000 Muenchen Multipole vacuum switching device with switching vessels encapsulated in insulating material
GB1499106A (en) * 1975-05-23 1978-01-25 Ass Elect Ind Actuating mechanism for vacuum interrupters
US4479042A (en) * 1983-04-19 1984-10-23 Westinghouse Electric Corp. Contact overtravel adjustment apparatus for a vacuum contactor
FR2683939B1 (en) * 1991-11-20 1993-12-31 Gec Alsthom Sa MEDIUM VOLTAGE SELF-DISCONNECTING CIRCUIT BREAKER AND APPLICATION TO A CELL AND A MEDIUM VOLTAGE STATION.

Also Published As

Publication number Publication date
FR2725830B1 (en) 1997-01-03
FR2725830A1 (en) 1996-04-19
ATE204676T1 (en) 2001-09-15
EP0707330B1 (en) 2001-08-22
ES2159612T3 (en) 2001-10-16
EP0707330A1 (en) 1996-04-17
DE69522282D1 (en) 2001-09-27
DE69522282T2 (en) 2002-05-16

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