EP1564773B1 - Multi-pole circuit breaker with single pole switching units - Google Patents

Multi-pole circuit breaker with single pole switching units Download PDF

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Publication number
EP1564773B1
EP1564773B1 EP05354003.5A EP05354003A EP1564773B1 EP 1564773 B1 EP1564773 B1 EP 1564773B1 EP 05354003 A EP05354003 A EP 05354003A EP 1564773 B1 EP1564773 B1 EP 1564773B1
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EP
European Patent Office
Prior art keywords
circuit breaker
units
layer
blocks
breaking
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EP05354003.5A
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German (de)
French (fr)
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EP1564773A1 (en
Inventor
Henri Schneider Electric Industries SAS Auque
Marc Schneider Electric Industries SAS Serpinet
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
    • 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
    • H01H1/5866—Electric connections to or between contacts; Terminals characterised by the use of a plug and socket connector
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes

Definitions

  • the invention relates to a multipole circuit breaker, comprising unipolar breaking blocks in the form of housings with two large lateral faces and having at least one movable contact which cooperates with at least one fixed contact, a control mechanism common to a set breaking blocks for controlling the opening or closing of the contacts of said blocks, first upstream electrical connection means, second downstream electrical connection means.
  • Each unipolar breaking block constitutes a breaking subassembly housed in an envelope constituting the housing of the multipole circuit breaker.
  • Each pole of the circuit breaker comprises at least one unipolar block with at least one rotary contact associated with a breaking chamber.
  • the unipolar break block is contained in a molded plastic housing. The electrical connection of the block to the rest of the device is effected by means of two connection pads connected to the fixed contacts.
  • the arrangement or positioning of unipolar break blocks within the multipole circuit breaker may vary from one embodiment to another. Depending on the position of the breaking blocks, there may be strong constraints for positioning the blocks together. In addition, the control mechanism blocks as well as mechanical links between the moving parts of the different blocks sometimes require achievements of great precision.
  • the patent WO00 / 30228 A1 has a multipole circuit breaker with cutoff blocks aligned with each other. This alignment is performed along an axis perpendicular to the set of mains connection bars to which the multipole circuit breaker is connected.
  • This arrangement of the unipolar blocks makes it possible to reduce the bulk of the multipole circuit breaker according to its width but imposes significant construction and operating constraints. This arrangement involves an increase in the lengths of copper necessary for the connection of the different blocks to the connection clamps fixing on the corresponding bars. These excessive lengths of conductive wire are responsible for heating the device when it is traversed by strong electric currents.
  • the control of the blocks is performed by a mechanically controlled system consisting of connecting rods whose excessive lengths make the system mechanically more complex, less reliable and having a longer response time.
  • each block of cut must necessarily be associated with an evacuation system.
  • the distance between the bars of the mains connection busbar is greater than that of a circuit breaker whose blocks are placed side by side.
  • Licences FR-A-2682531 or US6448522 B1 have multipole circuit breakers where all break blocks are positioned side by side. These solutions have the advantage of having control mechanisms for cutoff blocks having simplified and reliable mechanical connections. However, increasing the width of this type of multipole circuit breaker in comparison with the solution described in the document WO00 / 30228 A1 , may be a disadvantage when the electrical panels are limited in size and must contain several multipole circuit breakers.
  • the invention therefore aims to overcome the disadvantages of the state of the art, so as to provide a multipolar circuit breaker reduced size and simplified manufacturing.
  • Another object of the invention is to provide a circuit breaker whose mechanical connection between the blocks is simplified.
  • a multipolar circuit breaker according to the invention comprises breaking blocks grouped on two superimposed layers, at least one layer comprising at least one pair of blocks, the control mechanism comprising mechanical connection means for simultaneously operating the unipolar cutoff blocks of each layer.
  • the cutoff block or blocks of each layer comprise at least one connecting rod coupled to at least one crank, the cranks of each layer are interconnected by a control rod, the control mechanism actuating simultaneously the cranks of unipolar break blocks.
  • the circuit breaker consists of at least three unipolar breaking blocks grouped by a pair of blocks on a first layer and a block on a second layer.
  • the circuit breaker consists of four unipolar breaking blocks grouped by a first pair of blocks on a first layer of blocks and a second pair of blocks on a second layer.
  • the lower surfaces of the cutoff blocks of a first layer are respectively contiguous to the lower surfaces of the cutoff blocks of a second layer.
  • the two block layers are shifted relative to each other along the longitudinal axis of the blocks to form a gas evacuation column from low exhaust openings of the cutoff blocks.
  • the longitudinal axis of the gas evacuation column is perpendicular to the longitudinal axes of the cutoff blocks.
  • the difference in the respective lengths of the connecting bars to the mains connection busbar of the blocks of the same pair is substantially equal to the distance separating said bars.
  • a tenon placed on the lower part of the front face of the circuit breaker housing allows on the one hand the positioning of circuit breaker in a location of an electrical panel and on the other hand a rotation of said circuit breaker in order to gradually connect the clamps on the mains connection bars, the axis of rotation around which the circuit breaker moves then extending perpendicularly to the side faces of the circuit breaker.
  • the terminals or the terminal lugs are connected and positioned relative to the first connecting bars so that there is a clearance angle between the plane of the front surface of the circuit breaker and the axis of the conductors connected to said terminals or pod.
  • the multipole circuit breaker 1 comprises four blocks 2 of unipolar cutoff.
  • Each cutoff block 2 comprises a molded casing of parallelepipedal overall shape having an upper surface 3 and a lower surface 4 as well as two large parallel lateral faces 44.
  • a movable contact bridge is housed inside said blocks. Said bridge is carried by a bar 5 extending perpendicularly to the large parallel side faces 44. This type of cutoff block is widely described in FIG. FR-A-2622347 of the plaintiff.
  • a double-cut rotary contact pivotable about an axis of rotation 6 between a closed position and an open position is traditionally observed.
  • the rotary contact is constituted by a pair of lever arms 7 extending between the axis of rotation 6 and two opposed movable contacts 8 cooperating respectively with two fixed contacts 9. There are thus two pairs of each formed contact of a fixed contact 9 and a movable contact 8.
  • the contact bridge can pivot about an axis of rotation 6 whose axis is perpendicular to the two large parallel side faces 44 of the cutoff block 2.
  • the movable contact bridge is mounted floating on the bar 5 by means of two opposite springs.
  • each pair of contacts is associated with a breaking chamber 10 with a deionization sheet.
  • a gas exhaust opening At the rear of each interrupting chamber is provided a gas exhaust opening to the outside of the cutoff block 2.
  • each cutoff block comprises two openings.
  • a first opening 12 is located near the upper surface 3 and a second opening, called the bottom opening 11, is located near the lower surface 4 of the cutoff block 2.
  • the unipolar breaking block is an independent unit constituting one of the poles of the circuit breaker 1.
  • the combination of four unipolar blocks 2 allows the realization of a quadrupole circuit breaker.
  • the combination of three unipolar blocks allows the realization of a tripolar circuit breaker.
  • the unipolar cutoff blocks 2 are arranged side by side in pairs, contiguous to their large lateral faces 44.
  • the bars 5 of two breaking blocks of the same pair are mechanically connected to the less a connecting rod 13 which extends parallel to the axis of rotation 6 of said bars 5.
  • two connecting rods 13 are used. Said rods 13 are eccentric with respect to the axis of rotation 6.
  • the connecting rods 13 are connected by means of a crank 14 comprising two opposite arms, each traversed by a connecting rod 13. The axis of rotation of the crank is aligned with the axis of rotation 6 of the bars 5.
  • the two pairs of unipolar break blocks are themselves contiguous with the lower surfaces 4 of the cutoff blocks 2.
  • the four blocks unipolar cutoff assemblies on two superimposed layers thus form a compact module of parallelepipedal overall shape composed of two upper blocks and two lower blocks respectively disposed on an upper layer and a lower layer.
  • the blocks of the upper layer are opposite with the rear face 15 of the casing of the circuit breaker 1 and conversely the blocks of the lower layer will be opposite with the anterior face 16 of the circuit breaker 1.
  • a control mechanism 17 is attached to the upper face 3 of one of the unipolar cutoff blocks of the upper layer.
  • This mechanism 17 has a joystick 18 and a toggle.
  • it comprises two outer metal flanges extending parallel and spaced apart by a distance substantially corresponding to the width of a unipolar breaking block.
  • the control mechanism 17 is accessible through an opening 70 made on the rear face 15 of the housing of the multipole circuit breaker 1.
  • the opening or closing control mechanism 17 comprises mechanical connection means for simultaneously actuating the unipolar breaking blocks of each layer. Said mechanism acts directly on the crank 14 of the cutting blocks of the upper layer placed in contact with said mechanism. The control of the cutoff blocks of the lower layer is done by means of a control rod 20 respectively connecting the cranks 14 of the cutoff blocks of the two layers. Said mechanism 17 thus controls the simultaneous opening or closing of the contacts 8, 9 of all the cutoff blocks 2.
  • the two layers of cutoff blocks 2 are shifted in relation to each other in a direction parallel to the longitudinal axis Y of the breaking blocks. This shifting of the blocks creates a free space having a column-like shape extending between the lateral faces 40 of the casing of the circuit-breaker 1.
  • the axis X of the column 21 is perpendicular to the longitudinal axis Y of said blocks.
  • the low gas exhaust openings 11 placed near the four lower surfaces 4 of the cutoff blocks 2 are in direct connection with said column 21. The gases are thus collected, channeled and discharged outside the casing of the circuit breaker 1.
  • a first series of fixed contacts 9 of the unipolar cutoff blocks 2 is connected to terminals or terminal lugs 22 by first connection bars 28. These terminals or terminal lugs 22 are used for the downstream electrical connection with, for example, starting lines. In addition, they are accessible from the lower part of the rear face 15 of the circuit breaker 1.
  • the terminals or the terminal lugs 22 are connected and positioned with respect to the first connecting bars 28 in such a way that there exists a clearance angle ⁇ between the plane formed by the anterior surface 16 of the circuit breaker 1 and the axis of the conductors. connected to said terminals or terminal 22.
  • the contact surface 60 of the terminal lugs 22 on which the conductors is positioned is not parallel to the plane formed by the anterior face 16 of the circuit breaker 1. Said contact surface 60 forms then an angle ⁇ with said surface 16.
  • connection terminals 22 of cylindrical or quasi-cylindrical shape the longitudinal axis of said terminals 22 form an angle ⁇ with the front surface 16 of the circuit breaker 1.
  • terminals or terminal lugs 22 make it possible to reduce the distance between the posterior and anterior surfaces 16 of said circuit breaker 1.
  • a second series of fixed contacts of the unipolar cutoff blocks 9 is connected to connection clamps 25 by second connecting bars 27.
  • the two connecting bars 27 of the blocks of the same pair are of different lengths. The difference in length is substantially equal to the distance D2 separating said mains connecting bars 26.
  • the connecting bars 27 of the same pair of blocks consist of a first part of the same length and length. same shape and a second portion of different length, said difference is equal to the distance D2 separating the mains connection bars 26.
  • connection clamps 25 are intended for the upstream electrical connection of the circuit breaker to the power supply system. They are placed on the front face 16 of the circuit breaker box. Furthermore, said clips 25 of the circuit breaker are in direct contact with a set of busbar 26 sector located in the electrical supply panel. These connection bars 26, generally made of aluminum or copper, are perpendicular to the lateral faces 40 of said circuit breaker case 1.
  • the installation of the circuit breaker in the electrical supply panel takes place as follows.
  • a tenon 30 placed on the lower part of the front face 16 of the circuit breaker 1 housing is plugged into a location 31 of the electrical panel.
  • a rotation of the circuit breaker in the direction of the arrow 32 of the figure 5 is performed in order to connect the clamps 25 to the bars 26 of the mains connection busbar.
  • the axis of rotation around which the circuit breaker moves, then extends perpendicular to the side faces 40 of the circuit breaker 1.
  • the clamps 25 of the circuit breaker are arranged in such a way that they come to connect successively and progressively to the busbar mains connection. This progressive connection reduces the useful effort for the installation of the circuit breaker in the electrical panel.
  • locking means positioned opposite the tenon 30 on the upper part of the rear face 15 of the casing of the circuit breaker 1 can rigidly fix the circuit breaker to the electrical panel.
  • the number of clamps per pole is adjustable according to the size of the circuit breaker. For example, as shown on the Figures 5 to 7 two clamps 25 are used per pole for a 630 amp circuit breaker 1 and only a 250 clamp for a 250 amp 250 circuit breaker.
  • the distance between these clamps is equal to D1.
  • the distances separating respectively all the tongs skewered on the same connection bar 26 will always be equal to an integer multiple of the distance D1.
  • connection clamps 25 are then connected to the connection bars 26 through openings 52 made on The openings 52 are substantially rectangular in shape and are aligned above the mains connection bars 26.
  • At least three series of parallel apertures 52 for a three-pole circuit breaker and four parallel series for a four-pole circuit breaker are then observed.
  • a strip 51 of insulating material protrudes from the upper plane of the protective rail 50. This band 51 allows better isolation of the clamps 25 at the time of their insertion on the connecting bars 26.
  • the rectangular openings of the same series are spaced from each other by a step whose value corresponding to the distance D1 separating the clamps 25 a circuit breaker pole.
  • the same protection rail 50 accepts circuit breakers of different sizes placed side by side.
  • the circuit breaker comprises a trip unit which is either integrated in the circuit breaker housing or is attached to the rear surface of said housing.
  • the trigger of electronic or electromechanical type can be common to all the cutoff blocks.
  • the multipole breaking device consists of three unipolar cutoff blocks 2 thus forming a tripolar circuit breaker. Unlike the quadrupole circuit breaker described above, the volume occupied by the fourth break block is left vacant or occupied by a substitute spacer. In the embodiment of this variant according to the figure 8 one of the two blocks of the upper layer is then deleted.
  • the unipolar block isolated from the upper layer comprises a connecting rod 13 which extends parallel to the axis of rotation 6 of the bar supporting the movable contacts 8.
  • two connecting rods 13 are used. Said rods are eccentric with respect to the axis of rotation of said rod 5.
  • the connecting rods are connected by means of a crank 14 having two opposite arms, each traversed by a connecting rod.
  • the axis of rotation of the crank is aligned with the axis of rotation of the bar 5.
  • the control mechanism is directly placed on the isolating block isolated from the upper layer.
  • the opening or closing control mechanism 17 acts directly on the crank of the upper block.
  • the control of the lower cutoff blocks is done by means of a control rod 20 respectively connecting the crank of the cutoff block of the upper layer and that of the lower layer. Said mechanism thus controls the simultaneous opening or closing of the contacts of all the breaking blocks.
  • the terminals 22 or terminal lugs are used for the upstream electrical connection with, for example, the supply lines of the power supply system.
  • the connection clamps 25 in direct contact with a set of connecting rod 26 are then intended for the downstream electrical connection of the circuit breaker.
  • the first series of fixed contacts 9 of the unipolar breaking blocks is connected to clamps 25 by the first connecting bars 28.
  • the second series of fixed contacts of the unipolar breaking blocks is also connected to clips by the second connecting bars 27. Clamps are therefore used for downstream and upstream connections.

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  • Distribution Board (AREA)
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Description

DOMAINE TECHNIQUE DE L'INVENTIONTECHNICAL FIELD OF THE INVENTION

L'invention est relative à un disjoncteur multipolaire, comprenant des blocs de coupure unipolaire sous la forme de boîtiers à deux grandes faces latérales et ayant au moins un contact mobile qui coopère avec au moins un contact fixe, un mécanisme de commande commun à un ensemble de blocs de coupure pour commander l'ouverture ou de la fermeture des contacts desdits blocs, des premiers moyens de connexion électrique amont, des seconds moyens de connexion électrique aval.The invention relates to a multipole circuit breaker, comprising unipolar breaking blocks in the form of housings with two large lateral faces and having at least one movable contact which cooperates with at least one fixed contact, a control mechanism common to a set breaking blocks for controlling the opening or closing of the contacts of said blocks, first upstream electrical connection means, second downstream electrical connection means.

ETAT DE LA TECHNIQUESTATE OF THE ART

De manière connue, l'utilisation de blocs de coupure unipolaire pour la réalisation de disjoncteurs multipolaires est décrite notamment dans les brevets FR-A-2682531 , US6448522 B1 , WO00/30228 A1 . Chaque bloc de coupure unipolaire constitue un sous-ensemble de coupure logé dans une enveloppe constituant le boîtier du disjoncteur multipolaire. Chaque pole du disjoncteur comporte au moins un bloc unipolaire à au moins un contact rotatif associé à une chambre de coupure. Le bloc de coupure unipolaire est contenu dans un boîtier en matière plastique moulé. Le raccordement électrique du bloc au reste du dispositif s'effectue au moyen de deux plages de raccordement reliées aux contacts fixe.In known manner, the use of unipolar break blocks for the production of multipole circuit breakers is described in particular in the patents FR-A-2682531 , US6448522 B1 , WO00 / 30228 A1 . Each unipolar breaking block constitutes a breaking subassembly housed in an envelope constituting the housing of the multipole circuit breaker. Each pole of the circuit breaker comprises at least one unipolar block with at least one rotary contact associated with a breaking chamber. The unipolar break block is contained in a molded plastic housing. The electrical connection of the block to the rest of the device is effected by means of two connection pads connected to the fixed contacts.

Un des avantages de tels systèmes modulaires comprenant lesdits blocs de coupure est notamment la réduction du coût de fabrication et de montage du disjoncteur.One of the advantages of such modular systems comprising said breaking blocks is in particular the reduction of the cost of manufacturing and mounting the circuit breaker.

La disposition ou le positionnement des blocs de coupure unipolaire à l'intérieur du disjoncteur multipolaire peut varier d'une réalisation à l'autre. En fonction de la position des blocs de coupure, il peut exister de fortes contraintes de positionnement des blocs entre eux. En outre, le mécanisme de commande des blocs ainsi que les liaisons mécaniques entre les parties mobiles des différents blocs nécessitent parfois des réalisations d'une grande précision.The arrangement or positioning of unipolar break blocks within the multipole circuit breaker may vary from one embodiment to another. Depending on the position of the breaking blocks, there may be strong constraints for positioning the blocks together. In addition, the control mechanism blocks as well as mechanical links between the moving parts of the different blocks sometimes require achievements of great precision.

Le brevet WO00/30228 A1 présente un disjoncteur multipolaire comportant des blocs de coupure alignés les uns par rapport aux autres. Cet alignement est réalisé selon un axe perpendiculaire au jeu de barres de raccordement secteur sur lesquelles se connecte le disjoncteur multipolaire. Cette disposition des blocs unipolaires permet de réduire l'encombrement du disjoncteur multipolaire selon sa largeur mais impose des contraintes de réalisation et de fonctionnement non négligeables. Cette disposition implique une augmentation des longueurs de cuivre nécessaires à la liaison des différents blocs aux pinces de raccordement se fixant sur les barres correspondantes. Ces longueurs excessives de fil conducteur sont responsables d'un échauffement du dispositif lorsque celui-ci est parcouru par de forts courants électriques. En outre, la commande des blocs est réalisée par un système à commande mécanique constitué de bielles dont les longueurs excessives rendent le système mécaniquement plus complexe, moins fiable et ayant un temps de réponse plus long.The patent WO00 / 30228 A1 has a multipole circuit breaker with cutoff blocks aligned with each other. This alignment is performed along an axis perpendicular to the set of mains connection bars to which the multipole circuit breaker is connected. This arrangement of the unipolar blocks makes it possible to reduce the bulk of the multipole circuit breaker according to its width but imposes significant construction and operating constraints. This arrangement involves an increase in the lengths of copper necessary for the connection of the different blocks to the connection clamps fixing on the corresponding bars. These excessive lengths of conductive wire are responsible for heating the device when it is traversed by strong electric currents. In addition, the control of the blocks is performed by a mechanically controlled system consisting of connecting rods whose excessive lengths make the system mechanically more complex, less reliable and having a longer response time.

Par ailleurs, la récupération, l'évacuation et le filtrage des gaz de coupure sont complexes. En effet, compte tenu de leur disposition et de leur éloignement mutuel, chaque bloc de coupure devra être associé nécessairement à un système d'évacuation. De plus, la distance entre les barres du jeu de barres de raccordement secteur est plus importante que celle d'un disjoncteur dont les blocs sont placés côte à côte.In addition, the recovery, evacuation and filtering of the cutoff gases are complex. Indeed, given their disposition and their mutual distance, each block of cut must necessarily be associated with an evacuation system. In addition, the distance between the bars of the mains connection busbar is greater than that of a circuit breaker whose blocks are placed side by side.

Les brevets FR-A-2682531 ou US6448522 B1 présentent des disjoncteurs multipolaires où tous les blocs de coupure sont positionnés côte à côte. Ces solutions présentent l'intérêt de posséder des mécanismes de commande des blocs de coupure ayant des liaisons mécaniques simplifiées et fiables. Cependant, l'augmentation de la largeur de ce type de disjoncteur multipolaire en comparaison avec la solution décrite dans le document WO00/30228 A1 , peut être un inconvénient lorsque les tableaux électriques sont limités en taille et doivent contenir plusieurs disjoncteurs multipolaires.Licences FR-A-2682531 or US6448522 B1 have multipole circuit breakers where all break blocks are positioned side by side. These solutions have the advantage of having control mechanisms for cutoff blocks having simplified and reliable mechanical connections. However, increasing the width of this type of multipole circuit breaker in comparison with the solution described in the document WO00 / 30228 A1 , may be a disadvantage when the electrical panels are limited in size and must contain several multipole circuit breakers.

EXPOSE DE L'INVENTIONSUMMARY OF THE INVENTION

L'invention vise donc à remédier aux inconvénients de l'état de la technique, de manière à proposer un disjoncteur multipolaire d'encombrement réduit et de fabrication simplifiée. Un autre but de l'invention est de proposer un disjoncteur dont la liaison mécanique entre les blocs est simplifiée.The invention therefore aims to overcome the disadvantages of the state of the art, so as to provide a multipolar circuit breaker reduced size and simplified manufacturing. Another object of the invention is to provide a circuit breaker whose mechanical connection between the blocks is simplified.

Un disjoncteur multipolaire selon l'invention, comprend des blocs de coupure regroupés sur deux couches superposées, au moins une couche comportant au moins une paire de blocs, le mécanisme de commande comportant des moyens de liaison mécaniques pour actionner simultanément les blocs de coupure unipolaire de chaque couche.A multipolar circuit breaker according to the invention comprises breaking blocks grouped on two superimposed layers, at least one layer comprising at least one pair of blocks, the control mechanism comprising mechanical connection means for simultaneously operating the unipolar cutoff blocks of each layer.

Dans un mode de réalisation particulier, le ou les blocs de coupure de chaque couche comprennent au moins une tige de liaison accouplée à au moins une manivelle, les manivelles de chaque couche sont reliées entre elles par une bielle de commande, le mécanisme de commande actionnant simultanément les manivelles des blocs de coupure unipolaire.In a particular embodiment, the cutoff block or blocks of each layer comprise at least one connecting rod coupled to at least one crank, the cranks of each layer are interconnected by a control rod, the control mechanism actuating simultaneously the cranks of unipolar break blocks.

Avantageusement, le disjoncteur est constitué d'au moins trois blocs de coupure unipolaire regroupés par une paire de blocs sur une première couche et un bloc sur une seconde couche.Advantageously, the circuit breaker consists of at least three unipolar breaking blocks grouped by a pair of blocks on a first layer and a block on a second layer.

Selon un développement de l'invention, le disjoncteur est constitué de quatre blocs de coupure unipolaire regroupés par une première paire de blocs sur une première couche de blocs et une seconde paire de blocs sur une seconde couche.According to a development of the invention, the circuit breaker consists of four unipolar breaking blocks grouped by a first pair of blocks on a first layer of blocks and a second pair of blocks on a second layer.

De préférence, les surfaces inférieures des blocs de coupure d'une première couche sont accolées respectivement aux surfaces inférieures des blocs de coupure d'une seconde couche.Preferably, the lower surfaces of the cutoff blocks of a first layer are respectively contiguous to the lower surfaces of the cutoff blocks of a second layer.

Avantageusement, les deux couches de blocs sont décalées l'une par rapport à l'autre suivant l'axe longitudinal des blocs pour former une colonne d'évacuation des gaz provenant d'ouvertures basses d'échappement des blocs de coupure.Advantageously, the two block layers are shifted relative to each other along the longitudinal axis of the blocks to form a gas evacuation column from low exhaust openings of the cutoff blocks.

Selon un mode développement de l'invention, l'axe longitudinal de la colonne d'évacuation des gaz est perpendiculaire aux axes longitudinaux des blocs de coupure.According to a development mode of the invention, the longitudinal axis of the gas evacuation column is perpendicular to the longitudinal axes of the cutoff blocks.

De préférence, la différence des longueurs respectives des barres de liaison au jeu de barres de raccordement secteur des blocs d'une même paire est sensiblement égale à la distance séparant lesdites barres.Preferably, the difference in the respective lengths of the connecting bars to the mains connection busbar of the blocks of the same pair is substantially equal to the distance separating said bars.

Selon un mode développement de l'invention, un tenon placé sur la partie basse de la face antérieure du boîtier du disjoncteur permet d'une part le positionnement de disjoncteur dans un emplacement d'un tableau électrique et d'autre part une rotation dudit disjoncteur afin de venir connecter de façon progressive les pinces sur le jeu barres de raccordement secteur, l'axe de rotation autour duquel se déplace le disjoncteur s'étendant alors perpendiculairement aux faces latérales du disjoncteur.According to a development mode of the invention, a tenon placed on the lower part of the front face of the circuit breaker housing allows on the one hand the positioning of circuit breaker in a location of an electrical panel and on the other hand a rotation of said circuit breaker in order to gradually connect the clamps on the mains connection bars, the axis of rotation around which the circuit breaker moves then extending perpendicularly to the side faces of the circuit breaker.

De préférence, les bornes ou les cosses de raccordement sont reliées et positionnées par rapport aux premières barres de liaison de telle manière qu'il existe un angle de dégagement entre le plan de la surface antérieure du disjoncteur et l'axe des conducteurs reliés aux dites bornes ou cosse.Preferably, the terminals or the terminal lugs are connected and positioned relative to the first connecting bars so that there is a clearance angle between the plane of the front surface of the circuit breaker and the axis of the conductors connected to said terminals or pod.

BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

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

  • la figure 1 est une vue interne en perspective d'un disjoncteur tétra polaire selon un mode de réalisation de l'invention ;
  • la figure 2 est une vue en perspective des blocs unipolaires et du mécanisme de commande associé du disjoncteur selon la figure 1 ;
  • la figure 3 est une vue en perspective d'un disjoncteur selon un mode de réalisation de l'invention ;
  • la figure 4 est une vue en perspective des blocs unipolaires agencés sur deux couches superposées ;
  • les figures 5 à 7 représentent sous la forme de schémas simplifiés deux disjoncteurs selon l'invention au moment de leur positionnement dans un tableau électrique ;
  • la figure 8 est une vue schématique en perspective d'un disjoncteur tripolaire selon un mode de réalisation de l'invention.
Other advantages and features will emerge more clearly from the following description of a particular embodiment of the invention, given by way of non-limiting example, and represented in the accompanying drawings in which:
  • the figure 1 is an internal perspective view of a quadrupole circuit breaker according to one embodiment of the invention;
  • the figure 2 is a perspective view of the unipolar blocks and the associated control mechanism of the circuit breaker according to the figure 1 ;
  • the figure 3 is a perspective view of a circuit breaker according to one embodiment of the invention;
  • the figure 4 is a perspective view of the unipolar blocks arranged on two superimposed layers;
  • the Figures 5 to 7 represent in the form of simplified diagrams two circuit breakers according to the invention at the time of their positioning in an electrical panel;
  • the figure 8 is a schematic perspective view of a tripolar circuit breaker according to one embodiment of the invention.

DESCRIPTION DETAILLEE D'UN MODE DE REALISATIONDETAILED DESCRIPTION OF AN EMBODIMENT

Selon l'exemple de réalisation présenté sur les figures 1 à 4, le disjoncteur multipolaire 1 comporte quatre blocs 2 de coupure unipolaire. Chaque bloc 2 de coupure comporte un boîtier moulé de forme globale parallélépipédique ayant une surface supérieure 3 et une surface inférieure 4 ainsi que deux grandes faces latérales 44 parallèles.According to the example of realization presented on Figures 1 to 4 , the multipole circuit breaker 1 comprises four blocks 2 of unipolar cutoff. Each cutoff block 2 comprises a molded casing of parallelepipedal overall shape having an upper surface 3 and a lower surface 4 as well as two large parallel lateral faces 44.

Un pont de contact mobile est logé à l'intérieur desdits blocs. Ledit pont est porté par un barreau 5 s'étendant perpendiculairement aux grandes faces latérales parallèles 44. Ce type de bloc de coupure est largement décrit dans le brevet FR-A-2622347 de la demanderesse. On observe traditionnellement un contact rotatif à double coupure susceptible de pivoter autour d'un axe de rotation 6 entre une position de fermeture et une position d'ouverture.A movable contact bridge is housed inside said blocks. Said bridge is carried by a bar 5 extending perpendicularly to the large parallel side faces 44. This type of cutoff block is widely described in FIG. FR-A-2622347 of the plaintiff. A double-cut rotary contact pivotable about an axis of rotation 6 between a closed position and an open position is traditionally observed.

Le contact rotatif est constitué par une paire de bras de leviers 7 s'étendant entre l'axe de rotation 6 et deux contacts mobiles 8 opposés coopérant respectivement avec deux contacts fixes 9. On observe ainsi deux paires de contacts formées chacune d'un contact fixe 9 et d'un contact mobile 8. Le pont de contacts peut pivoter autour d'un axe de rotation 6 dont l'axe est perpendiculaire aux deux grandes faces latérales 44 parallèles du bloc de coupure 2. Le pont de contacts mobiles est monté flottant sur le barreau 5 par l'intermédiaire de deux ressorts opposés.The rotary contact is constituted by a pair of lever arms 7 extending between the axis of rotation 6 and two opposed movable contacts 8 cooperating respectively with two fixed contacts 9. There are thus two pairs of each formed contact of a fixed contact 9 and a movable contact 8. The contact bridge can pivot about an axis of rotation 6 whose axis is perpendicular to the two large parallel side faces 44 of the cutoff block 2. The movable contact bridge is mounted floating on the bar 5 by means of two opposite springs.

Il est bien entendu que tout autre dispositif, notamment à simple coupure, peut être utilisé.It is understood that any other device, including single cut, can be used.

Chaque paire de contacts est associée à une chambre de coupure 10 à tôle de désionisation. A l'arrière de chaque chambre de coupure est prévu une ouverture d'échappement des gaz vers l'extérieur du bloc de coupure 2. Ainsi chaque bloc de coupure comprend deux ouvertures. Une première ouverture 12 est située à proximité de la surface supérieure 3 et une seconde ouverture dite ouverture basse 11, est située à proximité de la surface inférieure 4 du bloc de coupure 2.Each pair of contacts is associated with a breaking chamber 10 with a deionization sheet. At the rear of each interrupting chamber is provided a gas exhaust opening to the outside of the cutoff block 2. Thus, each cutoff block comprises two openings. A first opening 12 is located near the upper surface 3 and a second opening, called the bottom opening 11, is located near the lower surface 4 of the cutoff block 2.

Le bloc de coupure unipolaire est une unité indépendante constituant l'un des pôles du disjoncteur 1. L'association de quatre blocs 2 unipolaires permet la réalisation d'un disjoncteur tétra polaire. L'association de trois blocs unipolaires permet la réalisation d'un disjoncteur tripolaire.The unipolar breaking block is an independent unit constituting one of the poles of the circuit breaker 1. The combination of four unipolar blocks 2 allows the realization of a quadrupole circuit breaker. The combination of three unipolar blocks allows the realization of a tripolar circuit breaker.

Dans le cas d'un disjoncteur tétra polaire, les blocs de coupure 2 unipolaire sont disposés côte à côte par paire, accolés par leurs grandes faces latérales 44. Les barreaux 5 de deux blocs de coupure d'une même paire sont reliés mécaniquement par au moins une tige de liaison 13 qui s'étend parallèlement à l'axe de rotation 6 desdits barreaux 5. Dans l'exemple de réalisation, deux tiges de liaison 13 sont utilisées. Lesdites tiges 13 sont excentrées par rapport à l'axe de rotation 6. Les tiges de liaison 13 sont reliées au moyen d'une manivelle 14 comportant deux bras opposés, chacun traversé par une tige de liaison 13. L'axe de rotation de la manivelle est aligné avec l'axe de rotation 6 des barreaux 5.In the case of a quadrupole circuit breaker, the unipolar cutoff blocks 2 are arranged side by side in pairs, contiguous to their large lateral faces 44. The bars 5 of two breaking blocks of the same pair are mechanically connected to the less a connecting rod 13 which extends parallel to the axis of rotation 6 of said bars 5. In the embodiment, two connecting rods 13 are used. Said rods 13 are eccentric with respect to the axis of rotation 6. The connecting rods 13 are connected by means of a crank 14 comprising two opposite arms, each traversed by a connecting rod 13. The axis of rotation of the crank is aligned with the axis of rotation 6 of the bars 5.

Les deux paires de blocs de coupure unipolaire sont elles-mêmes accolées par les surfaces inférieures 4 des blocs de coupure 2. Les quatre blocs de coupure unipolaire assemblés sur deux couches superposées forment ainsi un module compact de forme globale parallélépipédique composé de deux blocs supérieurs et de deux blocs inférieurs disposés respectivement sur une couche supérieure et une couche inférieure. Les blocs de la couche supérieure sont en vis à vis avec la face postérieure 15 du boîtier du disjoncteur 1 et inversement les blocs de la couche inférieure seront en vis à vis avec la face antérieure 16 du disjoncteur 1.The two pairs of unipolar break blocks are themselves contiguous with the lower surfaces 4 of the cutoff blocks 2. The four blocks unipolar cutoff assemblies on two superimposed layers thus form a compact module of parallelepipedal overall shape composed of two upper blocks and two lower blocks respectively disposed on an upper layer and a lower layer. The blocks of the upper layer are opposite with the rear face 15 of the casing of the circuit breaker 1 and conversely the blocks of the lower layer will be opposite with the anterior face 16 of the circuit breaker 1.

Un mécanisme de commande17 est fixé sur la face supérieure 3 de l'un des blocs de coupure unipolaire de la couche supérieure. Ce mécanisme 17a une manette de commande 18 et une genouillère. En outre, il comporte deux flasques métalliques externes s'étendant parallèlement et étant écartés d'une distance correspondant sensiblement à la largeur d'un bloc de coupure unipolaire. Le mécanisme de commande 17 est accessible à travers une ouverture 70 pratiquée sur la face postérieure 15 du boîtier du disjoncteur multipolaire 1.A control mechanism 17 is attached to the upper face 3 of one of the unipolar cutoff blocks of the upper layer. This mechanism 17 has a joystick 18 and a toggle. In addition, it comprises two outer metal flanges extending parallel and spaced apart by a distance substantially corresponding to the width of a unipolar breaking block. The control mechanism 17 is accessible through an opening 70 made on the rear face 15 of the housing of the multipole circuit breaker 1.

Le mécanisme de commande 17 d'ouverture ou de fermeture comporte des moyens de liaison mécaniques pour actionner simultanément les blocs de coupure unipolaire de chaque couche. Ledit mécanisme agit directement sur la manivelle 14 des blocs de coupure de la couche supérieure placés au contact avec ledit mécanisme. La commande des blocs de coupure de la couche inférieure se fait au moyen d'une bielle de commande 20 reliant respectivement les manivelles 14 des blocs de coupure des deux couches. Ledit mécanisme 17 commande ainsi les ouvertures ou les fermetures simultanées des contacts 8, 9 de l'ensemble des blocs de coupure 2.The opening or closing control mechanism 17 comprises mechanical connection means for simultaneously actuating the unipolar breaking blocks of each layer. Said mechanism acts directly on the crank 14 of the cutting blocks of the upper layer placed in contact with said mechanism. The control of the cutoff blocks of the lower layer is done by means of a control rod 20 respectively connecting the cranks 14 of the cutoff blocks of the two layers. Said mechanism 17 thus controls the simultaneous opening or closing of the contacts 8, 9 of all the cutoff blocks 2.

Les deux couches de blocs de coupure 2 sont décalées l'une part rapport à l'autre suivant une direction parallèle à l'axe longitudinal Y des blocs de coupure. Ce décalage des blocs crée un espace libre ayant une forme de colonne 21 s'étendant entre les faces latérales 40 du boîtier du disjoncteur 1. L'axe X de la colonne 21 est perpendiculaire à l'axe longitudinal Y desdits blocs. Dans cette configuration géométrique, les ouvertures basses 11 d'échappement des gaz placées à proximité des quatre surfaces inférieures 4 des blocs de coupure 2 sont en liaison directe avec ladite colonne 21. Les gaz sont ainsi collectés, canalisés et évacués à l'extérieur du boîtier du disjoncteur 1.The two layers of cutoff blocks 2 are shifted in relation to each other in a direction parallel to the longitudinal axis Y of the breaking blocks. This shifting of the blocks creates a free space having a column-like shape extending between the lateral faces 40 of the casing of the circuit-breaker 1. The axis X of the column 21 is perpendicular to the longitudinal axis Y of said blocks. In this geometrical configuration, the low gas exhaust openings 11 placed near the four lower surfaces 4 of the cutoff blocks 2 are in direct connection with said column 21. The gases are thus collected, channeled and discharged outside the casing of the circuit breaker 1.

Si plusieurs disjoncteurs sont positionnés côte à côte dans un tableau électrique, on observe alors selon les figures 5 à 7, que tous les axes longitudinaux X des colonnes d'évacuation desdits disjoncteurs sont alignés. Les gaz s'échappant d'un premier disjoncteur vont alors traverser les autres disjoncteurs via leur colonne 21 avant d'être libérés à l'extérieur.If several circuit breakers are positioned side by side in an electrical panel, then we observe according to Figures 5 to 7 , that all the longitudinal axes X of the evacuation columns of said circuit breakers are aligned. The gases escaping from a first circuit breaker will then go through the other circuit breakers via their column 21 before being released outside.

Si un disjoncteur isolé est compartimenté au moyen notamment de plaques placées de part et d'autre de ses faces latérales 40, les gaz s'échappant de la colonne 21 sont ensuite dirigés à l'extérieur du compartiment grâce à des volume 41 spécialement aménagés dans les faces latérales 40 de chaque boîtier de disjoncteur.If an isolated circuit breaker is compartmentalized by means in particular of plates placed on either side of its lateral faces 40, the gases escaping from the column 21 are then directed outside the compartment thanks to volumes 41 specially arranged in the side faces 40 of each circuit breaker box.

Une première série de contacts fixes 9 des blocs de coupure unipolaire 2 est reliée à des bornes ou des cosses de raccordement 22 par des premières barres de liaison 28. Ces bornes ou cosses de raccordement 22 sont utilisées pour la connexion électrique avale avec par exemple des lignes de départ. En outre, elles sont accessibles depuis la partie basse de la face postérieure 15 du disjoncteur 1.A first series of fixed contacts 9 of the unipolar cutoff blocks 2 is connected to terminals or terminal lugs 22 by first connection bars 28. These terminals or terminal lugs 22 are used for the downstream electrical connection with, for example, starting lines. In addition, they are accessible from the lower part of the rear face 15 of the circuit breaker 1.

Les bornes ou les cosses de raccordement 22 sont reliées et positionnées par rapport aux premières barres de liaison 28 de telle manière qu'il existe un angle de dégagement β entre le plan formée par la surface antérieure 16 du disjoncteur 1 et l'axe des conducteurs reliés aux dites bornes ou cosse 22. En pratique, la surface de contact 60 des cosses de raccordement 22 sur laquelle se positionne les conducteurs n'est pas parallèle au plan formé par la face antérieure 16 du disjoncteur 1. Ladite surface de contact 60 forme alors un angle β avec ladite surface 16. Dans le cas d'une utilisation de bornes de raccordement 22 de forme cylindrique ou quasi-cylindrique, l'axe longitudinal desdites bornes 22 forme un angle β avec la surface antérieure 16 du disjoncteur 1.The terminals or the terminal lugs 22 are connected and positioned with respect to the first connecting bars 28 in such a way that there exists a clearance angle β between the plane formed by the anterior surface 16 of the circuit breaker 1 and the axis of the conductors. connected to said terminals or terminal 22. In practice, the contact surface 60 of the terminal lugs 22 on which the conductors is positioned is not parallel to the plane formed by the anterior face 16 of the circuit breaker 1. Said contact surface 60 forms then an angle β with said surface 16. In the case of use of connection terminals 22 of cylindrical or quasi-cylindrical shape, the longitudinal axis of said terminals 22 form an angle β with the front surface 16 of the circuit breaker 1.

Cette orientation particulière est utile au bon dégagement des conducteurs au moment de leur déconnexion du. En outre, cette disposition particulière des bornes ou des cosses de raccordement 22 permet notamment de réduire la distance entre les surfaces postérieure 15 et antérieure 16 dudit disjoncteur 1.This particular orientation is useful to the good clearance of the drivers at the time of their disconnection. In addition, this provision In particular, the terminals or terminal lugs 22 make it possible to reduce the distance between the posterior and anterior surfaces 16 of said circuit breaker 1.

Une seconde série de contacts fixes des blocs 9 de coupure unipolaire 2 est reliée à des pinces 25 de raccordement par des secondes barres de liaison 27. Les deux barres de liaison 27 des blocs d'une même paire sont de longueur différente. La différence de longueur est sensiblement égale à la distance D2 séparant lesdites barres de raccordement secteur 26. Dans le mode de réalisation décrit, les barres de liaison 27 d'une même paire de blocs se composent d'une première partie de même longueur et de même forme et une seconde partie de longueur différente, ladite différence est égale à la distance D2 séparant les barres de raccordement secteur 26.A second series of fixed contacts of the unipolar cutoff blocks 9 is connected to connection clamps 25 by second connecting bars 27. The two connecting bars 27 of the blocks of the same pair are of different lengths. The difference in length is substantially equal to the distance D2 separating said mains connecting bars 26. In the embodiment described, the connecting bars 27 of the same pair of blocks consist of a first part of the same length and length. same shape and a second portion of different length, said difference is equal to the distance D2 separating the mains connection bars 26.

Les pinces de raccordement 25 sont destinées à la connexion électrique amont du disjoncteur au système d'alimentation électrique. Elles sont placées sur la face antérieure 16 du boîtier du disjoncteur. Par ailleurs, lesdites pinces 25 du disjoncteur sont en prise directe avec un jeu de barres de raccordement 26 secteur placé dans le tableau électrique d'alimentation. Ces barres de raccordement 26, généralement en aluminium ou en cuivre, sont perpendiculaires aux faces latérales 40 dudit boîtier du disjoncteur 1.The connection clamps 25 are intended for the upstream electrical connection of the circuit breaker to the power supply system. They are placed on the front face 16 of the circuit breaker box. Furthermore, said clips 25 of the circuit breaker are in direct contact with a set of busbar 26 sector located in the electrical supply panel. These connection bars 26, generally made of aluminum or copper, are perpendicular to the lateral faces 40 of said circuit breaker case 1.

La mise en place du disjoncteur dans le tableau électrique d'alimentation se déroule de la manière suivante. Dans une première étape, un tenon 30 placé sur la partie basse de la face antérieure 16 du boîtier du disjoncteur 1 est enfichée dans un emplacement 31 du tableau électrique. Ensuite une rotation du disjoncteur selon le sens de la flèche 32 de la figure 5 est effectuée afin de venir connecter les pinces 25 sur les barres 26 du jeu de barres de raccordement secteur. L'axe de rotation autour duquel se déplace le disjoncteur, s'étend alors perpendiculairement aux faces latérales 40 du disjoncteur 1. Les pinces 25 du disjoncteur sont disposées de telle manière qu'elles viennent se connecter successivement et de façon progressive au jeu de barres de raccordement secteur. Cette connexion progressive permet de réduire l'effort utile pour la mise en place du disjoncteur dans le tableau électrique.The installation of the circuit breaker in the electrical supply panel takes place as follows. In a first step, a tenon 30 placed on the lower part of the front face 16 of the circuit breaker 1 housing is plugged into a location 31 of the electrical panel. Then a rotation of the circuit breaker in the direction of the arrow 32 of the figure 5 is performed in order to connect the clamps 25 to the bars 26 of the mains connection busbar. The axis of rotation around which the circuit breaker moves, then extends perpendicular to the side faces 40 of the circuit breaker 1. The clamps 25 of the circuit breaker are arranged in such a way that they come to connect successively and progressively to the busbar mains connection. This progressive connection reduces the useful effort for the installation of the circuit breaker in the electrical panel.

Une fois le disjoncteur embroché, des moyens de verrouillage, positionnés de manière opposée au tenon 30 sur la partie haute de la face postérieure 15 du boîtier du disjoncteur 1 permettent de fixer rigidement le disjoncteur au tableau électrique.Once the circuit breaker is plugged in, locking means positioned opposite the tenon 30 on the upper part of the rear face 15 of the casing of the circuit breaker 1 can rigidly fix the circuit breaker to the electrical panel.

Selon une première variante de réalisation, le nombre de pinces par pôle est modulable en fonction du calibre du disjoncteur. A titre d'exemple, comme représenté sur les figures 5 à 7, deux pinces 25 sont utilisées par pôle pour un disjoncteur 1 de calibre 630 ampères et uniquement une pince 250 pour un disjoncteur 100 de calibre 250 ampères.According to a first variant embodiment, the number of clamps per pole is adjustable according to the size of the circuit breaker. For example, as shown on the Figures 5 to 7 two clamps 25 are used per pole for a 630 amp circuit breaker 1 and only a 250 clamp for a 250 amp 250 circuit breaker.

Lorsque au moins deux pinces 25 sont utilisées par pôle d'un même disjoncteur, la distance entre ces pinces est égale à D1. En outre, comme représenté sur la figure 7, lorsque plusieurs disjoncteurs sont connectés sur un même jeu de barres de raccordement 26, les distances séparant respectivement toutes les pinces embrochées sur une même barre de raccordement 26 seront toujours égales à un multiple entier de la distance D1.When at least two clamps 25 are used per pole of the same circuit breaker, the distance between these clamps is equal to D1. In addition, as shown on the figure 7 when several circuit breakers are connected on one and the same set of connecting bars 26, the distances separating respectively all the tongs skewered on the same connection bar 26 will always be equal to an integer multiple of the distance D1.

Selon un exemple, afin de limiter un accès direct aux barres de raccordement secteurs 26, ces dernières sont recouvertes d'un rail de protection 50. Les pinces de raccordement 25 sont alors connectées aux barres de raccordement 26 au travers d'ouvertures 52 pratiquées sur le rail 50. Les ouvertures 52 sont de forme sensiblement rectangulaire et sont alignées au-dessus des barres de raccordement secteur 26.In one example, in order to limit direct access to the sector connecting bars 26, the latter are covered with a protective rail 50. The connection clamps 25 are then connected to the connection bars 26 through openings 52 made on The openings 52 are substantially rectangular in shape and are aligned above the mains connection bars 26.

On observe alors au moins trois séries d'ouvertures 52 parallèles pour un disjoncteur tripolaire et quatre séries parallèles pour un disjoncteur tétrapolaire. Une bande 51 de matière isolante fait saillie par rapport au plan supérieur du rail de protection 50. Cette bande 51 permet un meilleur isolement des pinces 25 au moment de leur embrochage sur les barres de raccordement 26. Pour une grande modularité au niveau de l'installation d'un tableau électrique, les ouvertures rectangulaires d'une même série sont espacées les unes des autres d'un pas dont la valeur correspondant à la distance D1 séparant les pinces 25 d'un pôle de disjoncteur. Ainsi, un même rail de protection 50 accepte des disjoncteurs de différents calibres placés côte à côte.At least three series of parallel apertures 52 for a three-pole circuit breaker and four parallel series for a four-pole circuit breaker are then observed. A strip 51 of insulating material protrudes from the upper plane of the protective rail 50. This band 51 allows better isolation of the clamps 25 at the time of their insertion on the connecting bars 26. For a high degree of modularity at the level of the installation of an electrical panel, the rectangular openings of the same series are spaced from each other by a step whose value corresponding to the distance D1 separating the clamps 25 a circuit breaker pole. Thus, the same protection rail 50 accepts circuit breakers of different sizes placed side by side.

Avantageusement, le disjoncteur comporte un bloc de déclenchement qui est soit intégré au boîtier du disjoncteur soit accolé à la surface postérieure dudit boîtier. Le déclencheur de type électronique ou électromécanique peut être commun à l'ensemble des blocs de coupure.Advantageously, the circuit breaker comprises a trip unit which is either integrated in the circuit breaker housing or is attached to the rear surface of said housing. The trigger of electronic or electromechanical type can be common to all the cutoff blocks.

Selon une autre variante de réalisation, le dispositif de coupure multipolaire est constitué de trois blocs de coupure 2 unipolaire formant ainsi un disjoncteur tripolaire. Contrairement au disjoncteur tétra polaire décrit ci-dessus, le volume occupé par le quatrième bloc de coupure est laissé vacant ou est occupé par une entretoise de substitution. Dans l'exemple de réalisation de cette variante selon la figure 8, un des deux blocs de la couche supérieure est alors supprimé. Le bloc unipolaire isolé de la couche supérieure comporte une tige de liaison 13 qui s'étend parallèlement à l'axe de rotation 6 du barreau supportant les contacts mobiles 8. Dans l'exemple de réalisation, deux tiges de liaison 13 sont utilisées. Lesdites tiges sont excentrées par rapport à l'axe de rotation dudit barreau 5. Les tiges de liaison sont reliées au moyen d'une manivelle 14 comportant deux bras opposés, chacun traversé par une tige de liaison. L'axe de rotation de la manivelle est aligné avec l'axe de rotation du barreau 5. Le mécanisme de commande est directement placé sur le bloc de coupure isolé de la couche supérieure. Comme pour le disjoncteur tétra polaire, le mécanisme de commande 17 d'ouverture ou de fermeture agit directement sur la manivelle du bloc supérieur. La commande des blocs inférieurs de coupure se fait au moyen d'une bielle de commande 20 reliant respectivement la manivelle du bloc de coupure de la couche supérieure et celle de la couche inférieure. Ledit mécanisme commande ainsi de l'ouverture ou de la fermeture simultanée des contacts de l'ensemble des blocs de coupure.According to another variant embodiment, the multipole breaking device consists of three unipolar cutoff blocks 2 thus forming a tripolar circuit breaker. Unlike the quadrupole circuit breaker described above, the volume occupied by the fourth break block is left vacant or occupied by a substitute spacer. In the embodiment of this variant according to the figure 8 one of the two blocks of the upper layer is then deleted. The unipolar block isolated from the upper layer comprises a connecting rod 13 which extends parallel to the axis of rotation 6 of the bar supporting the movable contacts 8. In the exemplary embodiment, two connecting rods 13 are used. Said rods are eccentric with respect to the axis of rotation of said rod 5. The connecting rods are connected by means of a crank 14 having two opposite arms, each traversed by a connecting rod. The axis of rotation of the crank is aligned with the axis of rotation of the bar 5. The control mechanism is directly placed on the isolating block isolated from the upper layer. As for the quadrupole circuit breaker, the opening or closing control mechanism 17 acts directly on the crank of the upper block. The control of the lower cutoff blocks is done by means of a control rod 20 respectively connecting the crank of the cutoff block of the upper layer and that of the lower layer. Said mechanism thus controls the simultaneous opening or closing of the contacts of all the breaking blocks.

Selon une variante de réalisation, les bornes 22 ou cosses de raccordement sont utilisées pour la connexion électrique amont avec par exemple des lignes d'arrivée du système d'alimentation électrique. Les pinces de raccordement 25 en prise directe avec un jeu de barre de raccordement 26 sont alors destinées à la connexion électrique avale du disjoncteur.According to an alternative embodiment, the terminals 22 or terminal lugs are used for the upstream electrical connection with, for example, the supply lines of the power supply system. The connection clamps 25 in direct contact with a set of connecting rod 26 are then intended for the downstream electrical connection of the circuit breaker.

Selon une variante de réalisation, la première série de contacts fixes 9 des blocs de coupure unipolaire est reliée à des pinces 25 par les premières barres de liaison 28. La seconde série de contacts fixes des blocs de coupure unipolaire est aussi reliée à des pinces par les secondes barres de liaison 27. Des pinces sont donc utilisées pour les connections avale et amont.According to an alternative embodiment, the first series of fixed contacts 9 of the unipolar breaking blocks is connected to clamps 25 by the first connecting bars 28. The second series of fixed contacts of the unipolar breaking blocks is also connected to clips by the second connecting bars 27. Clamps are therefore used for downstream and upstream connections.

Claims (10)

  1. A multipole circuit breaker, comprising single-pole breaking units in the form of cases with two large side panels (44) and having at least one movable contact (8) which collaborates with at least one stationary contact (9), an operating mechanism (17) common to a set of breaking units (2) to command opening or closing of the contacts of said units, first line-side electric connection means and second load-side electric connection means, characterized in that the breaking units (2) are grouped on two superposed layers, at least one layer comprising at least one pair of units, the operating mechanism (17) comprising mechanical connecting means (13, 20) to simultaneously actuate the single-pole breaking units (2) of each layer.
  2. The circuit breaker according to claim 1 characterized in that the breaking unit(s) of each layer comprise at least one connecting rod (13) coupled to at least one crank (14), the cranks (14) of each layer are connected to one another by an operating rod (20), the operating mechanism (17) simultaneously actuating the cranks (14) of the single-pole breaking units (2).
  3. The circuit breaker according to claims 1 and 2 characterized in that it is formed by at least three single-pole breaking units (2) constituted by a pair of units grouped on a first layer and one unit on a second layer.
  4. The circuit breaker according to claim 3 characterized in that it is formed by four single-pole breaking units (2) constituted by a first pair of units on a first layer and a second pair of units on a second layer.
  5. The circuit breaker according to any one of the foregoing claims characterized in that the bottom surfaces (4) of the breaking units (2) of a first layer are respectively adjoined to the bottom surfaces (4) of the breaking units (2) of a second layer.
  6. The circuit breaker according to claim 5 characterized in that the two layers of units are offset with respect to one another in the direction of the longitudinal axis (Y) of the units to form a removal column (21) of the gases emanating from bottom exhaust openings (11) of the breaking units (2).
  7. The multipole circuit breaker according to claim 6 characterized in that the longitudinal axis (X) of the gas removal column (21) is perpendicular to the longitudinal axes (Y) of the breaking units.
  8. The circuit breaker according to one of the foregoing claims characterized in that the difference of the respective lengths of the connecting bars (27) for connection to the mains supply connection busbar (26) of the units of one and the same pair is substantially equal to the distance (D2) separating said bars.
  9. The circuit breaker according to any one of the foregoing claims characterized in that a lug (30) placed on the bottom part of the front panel (16) of the case of the circuit breaker (1) on the one hand enables the circuit breaker to be positioned in a location (31) of an electric panel and also enables rotation of said circuit breaker so as to progressively connect contact clamps (25) onto the mains supply connection busbar (26), the axis of rotation around which the circuit breaker moves then extending perpendicularly to the side panels (40) of the circuit breaker (1).
  10. The circuit breaker according to any one of the foregoing claims characterized in that the connection terminals or spade connectors (22) are connected and positioned with respect to the first connecting bars (28) in such a way that an angle of clearance (β) exists between the plane of the front surface (16) of the circuit breaker (1) and the axis of the conductors connected to said connection terminals or spade connectors (22).
EP05354003.5A 2004-02-10 2005-01-11 Multi-pole circuit breaker with single pole switching units Active EP1564773B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0401248A FR2866152B1 (en) 2004-02-10 2004-02-10 MULTIPOLE CIRCUIT BREAKER WITH UNIPOLAR CUT-OFF BLOCKS
FR0401248 2004-02-10

Publications (2)

Publication Number Publication Date
EP1564773A1 EP1564773A1 (en) 2005-08-17
EP1564773B1 true EP1564773B1 (en) 2014-05-21

Family

ID=34684994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05354003.5A Active EP1564773B1 (en) 2004-02-10 2005-01-11 Multi-pole circuit breaker with single pole switching units

Country Status (5)

Country Link
US (1) US7323958B2 (en)
EP (1) EP1564773B1 (en)
JP (1) JP4549879B2 (en)
CN (1) CN1655306B (en)
FR (1) FR2866152B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101004982B (en) * 2006-01-17 2013-08-14 叶可 Small bipolar breaker with contactor function
US7915558B2 (en) * 2007-08-13 2011-03-29 Mitsubishi Electric Power Products, Inc. Circuit breaker with articulating control cabinet
CN104409293A (en) * 2014-12-12 2015-03-11 常熟市通润开关厂有限公司 Auxiliary mechanism of multipolar circuit breaker
DE102015108629A1 (en) * 2015-06-01 2016-12-01 Eaton Electrical Ip Gmbh & Co. Kg Multi-pole switchgear in strip design with improved shutdown
CN108933050B (en) * 2017-05-29 2020-06-09 西门子股份公司 Electrical switching device

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Publication number Priority date Publication date Assignee Title
US3614687A (en) * 1968-08-28 1971-10-19 Tokyo Shibaura Electric Co Circuit interrupting apparatus
JPS58131631A (en) * 1982-01-30 1983-08-05 松下電工株式会社 Circuit breaker
US4724513A (en) * 1982-04-19 1988-02-09 General Electric Company Method of retaining molded case circuit breakers
DE3242062A1 (en) * 1982-11-13 1984-05-17 Brown, Boveri & Cie Ag, 6800 Mannheim ELECTRIC SWITCH
DE3431288A1 (en) * 1984-08-23 1986-03-06 Siemens AG, 1000 Berlin und 8000 München CONTACT ARRANGEMENT FOR LOW VOLTAGE CIRCUIT BREAKERS WITH A TWO-ARM CONTACT LEVER
JPH0643989Y2 (en) * 1985-06-03 1994-11-14 三菱電機株式会社 Alarm device for multi-pole circuit breakers and disconnectors
JPH01265423A (en) * 1988-04-18 1989-10-23 Fuji Electric Co Ltd Circuit breaker
JPH0810923Y2 (en) * 1990-02-15 1996-03-29 日東工業株式会社 Multi-pole circuit breaker
FR2682531B1 (en) * 1991-10-15 1993-11-26 Merlin Gerin MULTIPOLAR CIRCUIT BREAKER WITH SINGLE POLE BLOCKS.
FR2682530B1 (en) * 1991-10-15 1993-11-26 Merlin Gerin RANGE OF LOW VOLTAGE CIRCUIT BREAKERS WITH MOLDED HOUSING.
IT1292453B1 (en) * 1997-07-02 1999-02-08 Aeg Niederspannungstech Gmbh ROTATING GROUP OF CONTACTS FOR HIGH FLOW SWITCHES
JP2001143597A (en) * 1999-11-15 2001-05-25 General Electric Co <Ge> Rotary contact group of circuit breaker
US6924721B2 (en) * 2003-07-14 2005-08-02 Eaton Corporation Gas segregator barrier for electrical switching apparatus

Also Published As

Publication number Publication date
CN1655306B (en) 2011-06-08
JP2005251742A (en) 2005-09-15
FR2866152B1 (en) 2006-03-17
JP4549879B2 (en) 2010-09-22
CN1655306A (en) 2005-08-17
EP1564773A1 (en) 2005-08-17
US20050174203A1 (en) 2005-08-11
US7323958B2 (en) 2008-01-29
FR2866152A1 (en) 2005-08-12

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