EP0617449B1 - Switching apparatus - Google Patents

Switching apparatus Download PDF

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Publication number
EP0617449B1
EP0617449B1 EP94400614A EP94400614A EP0617449B1 EP 0617449 B1 EP0617449 B1 EP 0617449B1 EP 94400614 A EP94400614 A EP 94400614A EP 94400614 A EP94400614 A EP 94400614A EP 0617449 B1 EP0617449 B1 EP 0617449B1
Authority
EP
European Patent Office
Prior art keywords
fact
electromagnet
link
contact
moving parts
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
EP94400614A
Other languages
German (de)
French (fr)
Other versions
EP0617449A1 (en
Inventor
Gilles Baurand
Pierre Duchemin
Dominique Leglaye
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.)
Schneider Electric SE
Original Assignee
Schneider Electric SE
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
Priority claimed from FR9303562A external-priority patent/FR2703185B1/en
Priority claimed from FR9311481A external-priority patent/FR2710453B1/en
Application filed by Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0617449A1 publication Critical patent/EP0617449A1/en
Application granted granted Critical
Publication of EP0617449B1 publication Critical patent/EP0617449B1/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
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
    • H01H89/08—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair
    • 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
    • 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

Definitions

  • the present invention relates to a switch device comprising a contact carrier equipped with a contact bridge cooperating with fixed contacts and capable of being actuated by an electromagnet or by a lock mechanism.
  • the power poles each include two fixed contacts connected to connection terminals and a bridge of movable contacts which forms a bridge between these fixed contacts, in the closed position.
  • Each contact bridge is mounted on a contact carrier.
  • the contactors breakers provide the functions of a circuit breaker, a contactor and a thermal protection relay using the same power poles.
  • Each contact bridge can be actuated by an electromagnet (contactor function), by a striker (protection against short-circuits), by a thermal and / or magnetic protection module (protection function against overloads, phase imbalances and overcurrents) acting on the lock.
  • each power pole is housed in an insulating cartridge ensuring the insulation between poles and forming the breaking chamber.
  • Each contact carrier is subjected to a compression spring which tends to close the contacts. To open the contacts, the electromagnet must counteract the force of the compression spring.
  • the present invention aims to provide a switching device in which the pole pressure springs acting on the movable contacts are embedded on the contact carrier. Due to the absence of the compression spring resting on the bottom of the cartridge, the devices can have high ratings and advantageous motorizations.
  • the cartridges can be replaced easily and without cables.
  • the cutting speed can be controlled.
  • the design of this device can be adapted to different versions: contactors, contactors-circuit breakers, discontactors.
  • the apparatus is characterized in that pressure springs are mounted between the bridge of contacts and the contact carrier and that an actuating mechanism which can be operated independently either by the electromagnet or by the lock mechanism acts on a drive member of the contact carrier so as to allow operation as a contactor or circuit breaker independently.
  • the contact bridge is mounted in a cartridge forming an interrupting chamber, this cartridge having a crank driving the contact bridge which extends outside said cartridge and is connected by the actuation mechanism to the moving parts of the electromagnet.
  • the drive crank is mechanically connected to a toggle and the moving parts of the electromagnet act on the toggle axis.
  • the device illustrated by the drawings has several double-break power poles.
  • a single pole is shown in Figures 2, 3 and 9.
  • Each power pole comprises on the one hand a set of fixed contacts 13 and 14 which are connected to two connection terminals 16 and 18 respectively and on the other hand a movable contact bridge 11 provided with contact pads and cooperating with these contacts fixed 131 and 132 so as to establish or interrupt the flow of current between the terminals.
  • the cut is therefore double.
  • the two terminals are for example screw terminals making it possible to connect electrical conductors.
  • the contact bridge 11 is mounted on a contact carrier 12 which is made of insulating material and is guided in rotation about a pivot axis 15.
  • the middle part of the contact bridge 11 is housed in a housing of the contact carrier 12 so as to be able to pivot relative to this contact carrier, the relative pivoting movement being limited by stops.
  • Springs 19 are mounted between the contact bridge 11 and the contact carrier 12 so as to create contact pressure.
  • the pivoting contact carrier 12 is integral with a drive crank 17 rotated by the electromagnet 4 via a movement change mechanism 2.
  • each power pole is contained in an insulating cartridge 1 ensuring the isolation between poles and forming the breaking chamber.
  • the different cartridges 1 are stored and held, side by side, in a housing 3 in which is housed the electromagnet 4 for operating the contacts.
  • Each cartridge 1 has an outer casing 14 of molded plastic. It contains the contact bridge 11 and the contact carrier 12 which is guided so as to pivot around the pivot axis 15, between the open position of the contacts and the closed position of the contacts.
  • the contact carrier 12 crosses one side of the casing and it is integral with the drive crank 17.
  • the pivot axis 15 is located substantially at equal distance from the two movable contacts, the contact bridge 11 extending from on either side of this pivot axis.
  • the different cranks 17 extend in parallel and are pivotally actuated by the moving parts of the electromagnet.
  • the cartridges 1 contain deionization fins.
  • the housing allows the mounting of the contactor either on a rail thanks to a clearance provided with hooking means, or on a plate thanks to lateral flanges in which are provided fixing holes.
  • the electromagnet 4 which controls the movement of the mobile contacts consists of a fixed magnetic circuit 41, a mobile magnetic circuit 42 capable of being moved in translation (straight line) and a coil 43.
  • the coil 43 is provided supply terminals which are accessible outside the housing.
  • a return spring 44 associated with the electromagnet tends to return the mobile magnetic circuit 42 to the open position of the contacts.
  • each drive crank 17 of a rotary pole contact carrier is connected to a fixed point 221 by a toggle consisting of two links 21 and 22 hinged to one another around an axis of articulation 23.
  • the link 22 is articulated on the fixed point 221, while the link 21 is coupled to the drive crank 17 by a removable articulated connection around an axis 171.
  • the axis 23 of the toggle joint is linked to the moving parts of the electromagnet. The movement of the moving parts of the electromagnet rotates the cranks 17.
  • each drive crank 17 of a rotary pole contact carrier is connected by an articulation to a link 28 pivotally mounted around a fixed axis 281 and pivotally actuated by the movable parts of the electromagnet.
  • the articulation of the link 28 and the lever 17 takes place around an axis 171 and it can be dismantled.
  • the moving parts of the electromagnet are connected by an articulated link 23 to the pivoting link 28.
  • each drive crank 17 is connected by a removable articulated link 171 to a connecting rod 24 actuated by the moving parts of the electromagnet.
  • the articulated connection 171 between the crank 17 and the connecting billet 24 has cylindrical surfaces which resemble a hook and allow easy disassembly.
  • the hinged link between the rod 24 and the movable parts is of the ball joint type and is produced by a cage 29 joined by orthogonal articulation axes 27 and 45 respectively to the rod 24 and to the mobile magnetic circuit 12 of the electromagnet.
  • a spring acts on the rod 24 so as to apply the articulation surfaces of this rod against the conjugate articulation surfaces of the crank 17.
  • the excitation of the electromagnet coil determines the attraction of the mobile magnetic circuit downwards and therefore the translation of the connecting rod 24 and the rotation of the cranks 17.
  • the contacts of each bridge 11 come to bear against the fixed contacts connected to the connection terminals (figure 7).
  • the internal springs of the cartridges act so as to apply the movable contacts against the fixed contacts ( Figure 8).
  • the contactor-circuit breaker illustrated in Figure 9 has a lock 5 housed in the housing.
  • the drive crank 17 of each rotary contact carrier 12 of a pole is connected to the lock 5 by a toggle consisting of two links 21 and 22 articulated to each other around an axis of articulation 23
  • the link 22 is mechanically coupled to the lock 5, while the link 21 is coupled to the drive crank 17.
  • the drive crank 17 of the rotary contact carrier 12 is on the other hand mechanically connected to the mobile magnetic circuit 42 of the electromagnet.
  • the knee-joint articulation axis 23 is mechanically connected to the mobile magnetic circuit 42 of the electromagnet via an articulated and sliding connection 25 and a connecting rod 24.
  • This connecting rod 24 is connected on one side to the axis 23 by the articulated and sliding connection 25 and is connected on the other side to the movable frame 42. It is guided in translation.
  • the toggle link 21 is articulated at 26 to the crank 17.
  • the toggle link 22 is connected to the lock 5 which moves it.
  • the connection 26 between the link 26 and the crank 17 is removable.
  • the articulated and sliding connection 25 is constituted by a slide 25 formed in the connecting rod 24 and in which the axis 23 of knee pad.
  • This slide has an open shape so as to allow the release of the axis 23 and of the block carrying the lock 5 and the mechanism 2, during disassembly.
  • the articulated and sliding connection 25 is designed so as not to leave a degree of freedom to the axis 23 so as to allow operation in contactor while leaving a degree of freedom to this axis 23 so as to allow operation in circuit breaker .
  • the slide 25 will advantageously be open so as to allow the release of the axis 23 and, consequently, disassembly.
  • the contactor-circuit breaker of FIG. 9 comprises a magnetic and thermal protection module 6 provided, on each current path, with a magnetic device with instantaneous tripping intended to ensure protection against high overcurrents and, on each current path, a thermal device intended to provide protection against overloads and phase imbalance.
  • the protection module detects an overload or an overcurrent on a current path, it acts on the contact carrier via the lock 5.
  • All manual or trip operating orders pass through the lock 5 which acts mechanically on a contact which is connected in series with the coil 43 of the electromagnet.
  • the lock 5 can be actuated manually by a control button 51 or automatically by orders from the protection module 6.
  • the different states of the mechanism are materialized by the position of the control button 51.
  • the opening can occur either as in the previous case or on short circuit or overload.
  • the lock 5 is released ( Figure 12) and moves the entire toggle 21-22. The latter, by moving, rotates the contact carrier 11 and the poles open. From this position the coil ceases to be supplied and the electromagnet opens ( Figure 13).
  • the opening of the electromagnet does not influence the contacts because there is no longer a positive connection between the sliding connection 25 and the axis 23.
  • the links 21-22 constituting the toggle joint will have different relative positions, in the deployed position, according to the force and the speed of the contact desired, as a function of the speed of the electromagnet.
  • the connecting rod 21 and the lever 17 are uncoupled by tilting the connecting rod 21.
  • the block containing the lock 5 and the toggle joint 21-22 can then be released. It is then easy to change the cartridges 1.
  • the removable links between the levers 17 and the movement change mechanism allow the disassembly and replacement of the cartridges 1. Furthermore, the conductive sections housed in the cartridges can be separated from the conductive sections going to the terminals 16 and 18.
  • a thermal protection module is added to the contactor.
  • the cartridges 1 can be arranged at the rear of the device or at the front or on the side.
  • the lever arms can be adapted.

Landscapes

  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Description

La présente invention se rapporte à un appareil interrupteur comprenant un porte-contacts équipé d'un pont de contacts coopérant avec des contacts fixes et susceptible d'être actionné par un électroaimant ou par un mécanisme de serrure.The present invention relates to a switch device comprising a contact carrier equipped with a contact bridge cooperating with fixed contacts and capable of being actuated by an electromagnet or by a lock mechanism.

Différents appareils interrupteurs (contacteurs, contacteurs-disjoncteurs, discontacteurs) présentent l'agencement défini ci-dessus. Les pôles de puissance comprennent chacun deux contacts fixes reliés à des bornes de raccordement et un pont de contacts mobiles qui forme un pont entre ces contacts fixes, en position de fermeture. Chaque pont de contacts est monté sur un porte-contacts.Different switching devices (contactors, contactors-circuit breakers, discontactors) have the arrangement defined above. The power poles each include two fixed contacts connected to connection terminals and a bridge of movable contacts which forms a bridge between these fixed contacts, in the closed position. Each contact bridge is mounted on a contact carrier.

Les contacteurs-disjoncteurs assurent les fonctions d'un disjoncteur, d'un contacteur et d'un relais de protection thermique à l'aide des mêmes pôles de puissance. Chaque pont de contacts peut être actionné par un électroaimant (fonction contacteur), par un percuteur (protection contre les courts-circuits), par un module de protection thermique et/ou magnétique (fonction de protection contre les surcharges, les déséquilibres de phases et les surintensités) agissant sur la serrure.The contactors breakers provide the functions of a circuit breaker, a contactor and a thermal protection relay using the same power poles. Each contact bridge can be actuated by an electromagnet (contactor function), by a striker (protection against short-circuits), by a thermal and / or magnetic protection module (protection function against overloads, phase imbalances and overcurrents) acting on the lock.

Dans certains contacteurs-disjoncteurs tels que celui du brevet EP- 0 309 923, les contacts de chaque pôle de puissance sont logés dans une cartouche isolante assurant l'isolement entre pôles et formant la chambre de coupure. Chaque porte-contacts est soumis à un ressort de compression qui tend à fermer les contacts. Pour ouvrir les contacts, il faut que l'électroaimant contrecarre l'effort du ressort de compression.In certain contactors-circuit breakers such as that of patent EP-0 309 923, the contacts of each power pole are housed in an insulating cartridge ensuring the insulation between poles and forming the breaking chamber. Each contact carrier is subjected to a compression spring which tends to close the contacts. To open the contacts, the electromagnet must counteract the force of the compression spring.

La présente invention a pour but de fournir un appareil interrupteur dans lequel les ressorts de pression de pôles agissant sur les contacts mobiles sont embarqués sur le porte-contacts. Du fait de l'absence du ressort de compression en appui sur le fond de la cartouche, les appareils peuvent avoir des calibres élevés et des motorisations avantageuses. Les cartouches peuvent être remplacées aisément et sans décâbler. La vitesse de coupure peut être contrôlée. La conception de cet appareil peut s'adapter à différentes versions: contacteurs, contacteurs-disjoncteurs, discontacteurs.The present invention aims to provide a switching device in which the pole pressure springs acting on the movable contacts are embedded on the contact carrier. Due to the absence of the compression spring resting on the bottom of the cartridge, the devices can have high ratings and advantageous motorizations. The cartridges can be replaced easily and without cables. The cutting speed can be controlled. The design of this device can be adapted to different versions: contactors, contactors-circuit breakers, discontactors.

Conformément à l'invention, l'appareil est caractérisé par la fait que des ressorts de pression sont montés entre le pont de contacts et le porte-contacts et qu'un mécanisme d'actionnement pouvant être manoeuvré indépendamment soit par l'électroaimant soit par le mécanisme de serrure agit sur un organe d'entrainement du porte-contacts de manière à permettre le fonctionnement en contacteur ou en disjoncteur de manière indépendante.According to the invention, the apparatus is characterized in that pressure springs are mounted between the bridge of contacts and the contact carrier and that an actuating mechanism which can be operated independently either by the electromagnet or by the lock mechanism acts on a drive member of the contact carrier so as to allow operation as a contactor or circuit breaker independently.

Selon une caractéristique, le pont de contacts est monté dans une cartouche formant chambre de coupure, cette cartouche présentant une manivelle d'entraînement du pont de contacts qui s'étend à l'extérieur de ladite cartouche et est reliée par le mécanisme d'actionnement aux parties mobiles de l'électroaimant.According to one characteristic, the contact bridge is mounted in a cartridge forming an interrupting chamber, this cartridge having a crank driving the contact bridge which extends outside said cartridge and is connected by the actuation mechanism to the moving parts of the electromagnet.

Selon une caractéristique, la manivelle d'entraînement est reliée mécaniquement à une genouillère et les parties mobiles de l'électroaimant agissent sur l'axe de genouillère.According to one characteristic, the drive crank is mechanically connected to a toggle and the moving parts of the electromagnet act on the toggle axis.

L'invention va maintenant être décrite avec plus de détail en se référant à des modes de réalisation donnés à titre d'exemples et illustrés par les dessins annexés sur lesquels:

  • la figure 1 est un schéma de cartouche utilisée dans l'appareil selon l'invention;
  • la figure 2 est un schéma d'un premier mode de réalisation de contacteur selon l'invention;
  • la figure 3 est un schéma d'un second mode de réalisation de contacteur selon l'invention;
  • la figure 4 est un schéma d'un troisième mode de réalisation de contacteur selon l'invention;
  • la figure 5 est une coupe selon V-V de la figure 4;
  • les figures 6, 7, 8 illustrent le fonctionnement du contacteur des figures 4 et 5;
  • la figure 9 est un schéma de contacteur-disjoncteur selon l'invention;
  • la figure 10 est un schéma du contacteur-disjoncteur dans une position où la serrure est armée et la bobine de l'électroaimant est sous tension ce qui provoque la fermeture des pôles (fonctionnement en contacteur);
  • la figure 11 est un schéma du contacteur-disjoncteur dans une position où la serrure est armée où la bobine de l'électroaimant est hors tension ce qui provoque l'ouverture des pôles (fonctionnement en contacteur);
  • la figure 12 est un schéma du contacteur-disjoncteur dans une position où la serrure est déclenchée ce qui provoque l'ouverture des pôles (fonctionnement en disjoncteur);
  • la figure 13 est un schéma du contacteur-disjoncteur dans une position où la serrure est déclenchée, pôles ouverts, et où l'électroaimant est ouvert;
  • la figure 14 est un schéma du contacteur-disjoncteur en cours de réarmement, l'électroaimant restant ouvert.
The invention will now be described in more detail with reference to embodiments given by way of examples and illustrated by the appended drawings in which:
  • Figure 1 is a cartridge diagram used in the apparatus according to the invention;
  • Figure 2 is a diagram of a first embodiment of contactor according to the invention;
  • Figure 3 is a diagram of a second embodiment of contactor according to the invention;
  • Figure 4 is a diagram of a third embodiment of contactor according to the invention;
  • Figure 5 is a section along VV of Figure 4;
  • Figures 6, 7, 8 illustrate the operation of the contactor of Figures 4 and 5;
  • Figure 9 is a circuit breaker diagram according to the invention;
  • FIG. 10 is a diagram of the contactor-circuit breaker in a position where the lock is armed and the solenoid coil is energized, which causes the poles to close (operation in contactor);
  • Figure 11 is a diagram of the contactor-circuit breaker in a position where the lock is armed where the coil of the electromagnet is de-energized which causes the opening of the poles (operation in contactor);
  • FIG. 12 is a diagram of the contactor-circuit breaker in a position where the lock is released, which causes the poles to open (operation in circuit breaker);
  • FIG. 13 is a diagram of the contactor-circuit breaker in a position where the lock is released, poles open, and where the electromagnet is open;
  • FIG. 14 is a diagram of the contactor-circuit breaker during resetting, the electromagnet remaining open.

L'appareil illustré par les dessins comporte plusieurs pôles de puissance à double coupure. Un seul pôle est représenté sur les figures 2, 3 et 9.The device illustrated by the drawings has several double-break power poles. A single pole is shown in Figures 2, 3 and 9.

Chaque pôle de puissance comprend d'une part un jeu de contacts fixes 13 et 14 qui sont reliés à deux bornes de raccordement 16 et 18 respectivement et d'autre part un pont de contacts mobiles 11 pourvu de pastilles de contact et coopérant avec ces contacts fixes 131 et 132 de manière à établir ou à interrompre le passage de courant entre les bornes. La coupure est donc double. Les deux bornes sont par exemple des bornes à vis permettant de raccorder des conducteurs électriques.Each power pole comprises on the one hand a set of fixed contacts 13 and 14 which are connected to two connection terminals 16 and 18 respectively and on the other hand a movable contact bridge 11 provided with contact pads and cooperating with these contacts fixed 131 and 132 so as to establish or interrupt the flow of current between the terminals. The cut is therefore double. The two terminals are for example screw terminals making it possible to connect electrical conductors.

Le pont de contacts 11 est monté sur un porte-contacts 12 qui est réalisé en matériau isolant et est guidé en rotation autour d'un axe de pivotement 15. La partie médiane du pont de contacts 11 se loge dans un logement du porte-contacts 12 de manière à pouvoir pivoter par rapport à ce porte-contacts, le mouvement de pivotement relatif étant limité par des butées. Des ressorts 19 sont montés entre le pont de contacts 11 et le porte-contacts 12 de manière à créer la pression des contacts.The contact bridge 11 is mounted on a contact carrier 12 which is made of insulating material and is guided in rotation about a pivot axis 15. The middle part of the contact bridge 11 is housed in a housing of the contact carrier 12 so as to be able to pivot relative to this contact carrier, the relative pivoting movement being limited by stops. Springs 19 are mounted between the contact bridge 11 and the contact carrier 12 so as to create contact pressure.

Le porte-contacts 12 pivotant est solidaire d'une manivelle d'entraînement 17 manoeuvrée en rotation par l'électroaimant 4 par l'intermédiaire d'un mécanisme de changement de mouvement 2.The pivoting contact carrier 12 is integral with a drive crank 17 rotated by the electromagnet 4 via a movement change mechanism 2.

Les contacts de chaque pôle de puissance sont contenus dans une cartouche isolante 1 assurant l'isolement entre pôles et formant la chambre de coupure. Les différentes cartouches 1 sont rangées et maintenues, côte à côte, dans un boîtier 3 dans lequel se loge l'électroaimant 4 de manoeuvre des contacts.The contacts of each power pole are contained in an insulating cartridge 1 ensuring the isolation between poles and forming the breaking chamber. The different cartridges 1 are stored and held, side by side, in a housing 3 in which is housed the electromagnet 4 for operating the contacts.

Chaque cartouche 1 comporte une enveloppe extérieure 14 en matière plastique moulée. Elle contient le pont de contacts 11 et le porte-contacts 12 qui est guidé de manière à pivoter autour de l'axe de pivotement 15, entre la position d'ouverture des contacts et la position de fermeture des contacts. Le porte-contacts 12 traverse un coté de l'enveloppe et il est solidaire de la manivelle d'entraînement 17. L'axe de pivotement 15 se trouve sensiblement à égale distance des deux contacts mobiles, le pont de contacts 11 s'étendant de part et d'autre de cet axe de pivotement. Les différentes manivelles 17 s'étendent parallèlement et sont actionnées en pivotement par les parties mobiles de l'électroaimant.Les cartouches 1 contiennent des ailettes de désionisation.Each cartridge 1 has an outer casing 14 of molded plastic. It contains the contact bridge 11 and the contact carrier 12 which is guided so as to pivot around the pivot axis 15, between the open position of the contacts and the closed position of the contacts. The contact carrier 12 crosses one side of the casing and it is integral with the drive crank 17. The pivot axis 15 is located substantially at equal distance from the two movable contacts, the contact bridge 11 extending from on either side of this pivot axis. The different cranks 17 extend in parallel and are pivotally actuated by the moving parts of the electromagnet. The cartridges 1 contain deionization fins.

Le boîtier permet le montage du contacteur soit sur un rail grâce à un dégagement pourvu de moyens d'accrochage, soit sur une platine grâce à des rebords latéraux dans lesquels sont prévus des trous de fixation.The housing allows the mounting of the contactor either on a rail thanks to a clearance provided with hooking means, or on a plate thanks to lateral flanges in which are provided fixing holes.

L'électroaimant 4 qui commande le déplacement des contacts mobiles se compose d'un circuit magnétique fixe 41, d'un circuit magnétique mobile 42 susceptible d'être déplacé en translation (rectiligne) et d'une bobine 43. La bobine 43 est pourvue de bornes d'alimentation qui sont accessibles à l'extérieur du boîtier. Un ressort de rappel 44 associé à l'électroaimant tend à ramener le circuit magnétique mobile 42 en position d'ouverture des contacts.The electromagnet 4 which controls the movement of the mobile contacts consists of a fixed magnetic circuit 41, a mobile magnetic circuit 42 capable of being moved in translation (straight line) and a coil 43. The coil 43 is provided supply terminals which are accessible outside the housing. A return spring 44 associated with the electromagnet tends to return the mobile magnetic circuit 42 to the open position of the contacts.

Dans le contacteur illustré à la figure 2, chaque manivelle d'entraînement 17 d'un porte-contacts rotatif de pôle est reliée à un point fixe 221 par une genouillère constituée de deux biellettes 21 et 22 articulées l'une à l'autre autour d'un axe d'articulation 23. La biellette 22 est articulée sur le point fixe 221, tandis que la biellette 21 est accouplée à la manivelle d'entraînement 17 par une liaison articulée démontable autour d'un axe 171. L'axe 23 de la genouillère est lié aux parties mobiles de l'électroaimant. Le déplacement des parties mobiles de l'électroaimant fait pivoter les manivelles 17.In the contactor illustrated in FIG. 2, each drive crank 17 of a rotary pole contact carrier is connected to a fixed point 221 by a toggle consisting of two links 21 and 22 hinged to one another around an axis of articulation 23. The link 22 is articulated on the fixed point 221, while the link 21 is coupled to the drive crank 17 by a removable articulated connection around an axis 171. The axis 23 of the toggle joint is linked to the moving parts of the electromagnet. The movement of the moving parts of the electromagnet rotates the cranks 17.

Dans le contacteur illustré à la figure 3, chaque manivelle d'entraînement 17 d'un porte-contacts rotatif de pôle est reliée par une articulation à une biellette 28 montée pivotante autour d'un axe fixe 281 et actionnée en pivotement par les parties mobiles de l'électroaimant. L'articulation de la biellette 28 et du levier 17 s'effectue autour d'un axe 171 et elle démontable. Les parties mobiles de l'électroaimant sont reliées par une liaison articulée 23 à la biellette pivotante 28.In the contactor illustrated in FIG. 3, each drive crank 17 of a rotary pole contact carrier is connected by an articulation to a link 28 pivotally mounted around a fixed axis 281 and pivotally actuated by the movable parts of the electromagnet. The articulation of the link 28 and the lever 17 takes place around an axis 171 and it can be dismantled. The moving parts of the electromagnet are connected by an articulated link 23 to the pivoting link 28.

Dans le contacteur illustré par les figures 4 et 5, chaque manivelle d'entraînement 17 est reliée par une liaison articulée démontable 171 à une biellette de liaison 24 actionnée par les parties mobiles de l'électroaimant. La liaison articulée 171 entre la manivelle 17 et la billette de liaison 24 présente des portées cylindriques qui ressemblent à un crochet et autorisent un démontage facile. La liason articulée entre la biellette 24 et les parties mobiles est du type rotule et elle est réalisée par une cage 29 réunie par des axes d'articulation orthogonaux 27 et 45 respectivement à la biellette 24 et au circuit magnétique mobile 12 de l'électroaimant. Un ressort agit sur la biellette 24 de manière à appliquer les portées d'articulation de cette biellette contre les portées d'articulation conjuguées de la manivelle 17.In the contactor illustrated in FIGS. 4 and 5, each drive crank 17 is connected by a removable articulated link 171 to a connecting rod 24 actuated by the moving parts of the electromagnet. The articulated connection 171 between the crank 17 and the connecting billet 24 has cylindrical surfaces which resemble a hook and allow easy disassembly. The hinged link between the rod 24 and the movable parts is of the ball joint type and is produced by a cage 29 joined by orthogonal articulation axes 27 and 45 respectively to the rod 24 and to the mobile magnetic circuit 12 of the electromagnet. A spring acts on the rod 24 so as to apply the articulation surfaces of this rod against the conjugate articulation surfaces of the crank 17.

Le fonctionnement du contacteur selon les figures 4 et 5 va maintenant être décrit en se référant aux figures 6 à 8.The operation of the contactor according to FIGS. 4 and 5 will now be described with reference to FIGS. 6 to 8.

Dans la position d'ouverture représentée à la figure 6, l'armature de l'électroaimant est éloignée de la culasse, sous l'action du ressort associé à cet électroaimant. Les ponts de contacts des différentes cartouches sont alors en position d'ouverture.In the open position shown in Figure 6, the armature of the electromagnet is remote from the cylinder head, under the action of the spring associated with this electromagnet. The contact bridges of the various cartridges are then in the open position.

L'excitation de la bobine de l'électroaimant détermine l'attraction du circuit magnétique mobile vers le bas et donc la translation de la biellette de liaison 24 et la rotation des manivelles 17. Les contacts de chaque pont 11 viennent s'appuyer contre les contacts fixes reliés aux bornes de raccordement (figure 7). Les ressorts internes des cartouches agissent de manière à appliquer les contacts mobiles contre les contacts fixes (figure 8).The excitation of the electromagnet coil determines the attraction of the mobile magnetic circuit downwards and therefore the translation of the connecting rod 24 and the rotation of the cranks 17. The contacts of each bridge 11 come to bear against the fixed contacts connected to the connection terminals (figure 7). The internal springs of the cartridges act so as to apply the movable contacts against the fixed contacts (Figure 8).

Le contacteur-disjoncteur illustré à la figure 9, présente une serrure 5 se logeant dans le boîtier. La manivelle d'entraînement 17 de chaque porte-contacts rotatif 12 d'un pôle est reliée à la serrure 5 par une genouillère constituée de deux biellettes 21 et 22 articulées l'une à l'autre autour d'un axe d'articulation 23. La biellette 22 est accouplée mécaniquement à la serrure 5, tandis que la biellette 21 est accouplée à la manivelle d'entraînement 17.The contactor-circuit breaker illustrated in Figure 9, has a lock 5 housed in the housing. The drive crank 17 of each rotary contact carrier 12 of a pole is connected to the lock 5 by a toggle consisting of two links 21 and 22 articulated to each other around an axis of articulation 23 The link 22 is mechanically coupled to the lock 5, while the link 21 is coupled to the drive crank 17.

La manivelle d'entraînement 17 du porte-contacts rotatif 12 est d'autre part reliée mécaniquement au circuit magnétique mobile 42 de l'électroaimant. A cet effet, l'axe d'articulation de genouillère 23 est mécaniquement relié au circuit magnétique mobile 42 de l'électroaimant par l'intermédiaire d'une liaison articulée et coulissante 25 et d'une biellette de liaison 24. Cette biellette de liaison 24 est reliée d'un côté à l'axe 23 par la liaison articulée et coulissante 25 et est reliée de l'autre côté à l'armature mobile 42. Elle est guidée en translation.The drive crank 17 of the rotary contact carrier 12 is on the other hand mechanically connected to the mobile magnetic circuit 42 of the electromagnet. To this end, the knee-joint articulation axis 23 is mechanically connected to the mobile magnetic circuit 42 of the electromagnet via an articulated and sliding connection 25 and a connecting rod 24. This connecting rod 24 is connected on one side to the axis 23 by the articulated and sliding connection 25 and is connected on the other side to the movable frame 42. It is guided in translation.

La biellette de genouillère 21 est articulée en 26 à la manivelle 17. La biellette de genouillère 22 est reliée à la serrure 5 qui la déplace. La liaison 26 entre la biellette 26 et la manivelle 17 est démontable.The toggle link 21 is articulated at 26 to the crank 17. The toggle link 22 is connected to the lock 5 which moves it. The connection 26 between the link 26 and the crank 17 is removable.

La liaison articulée et coulissante 25 est constituée par une coulisse 25 ménagée dans la biellette de liaison 24 et dans laquelle coulisse l'axe 23 de genouillère. Cette coulisse a une forme ouverte de manière à permettre le dégagement de l'axe 23 et du bloc portant la serrure 5 et le mécanisme 2, lors d'un démontage.The articulated and sliding connection 25 is constituted by a slide 25 formed in the connecting rod 24 and in which the axis 23 of knee pad. This slide has an open shape so as to allow the release of the axis 23 and of the block carrying the lock 5 and the mechanism 2, during disassembly.

La liaison articulée et coulissante 25 est conçue de manière à ne pas laisser de degré de liberté à l'axe 23 de manière à permettre le fonctionnement en contacteur tout en laissant un degré de liberté à cet axe 23 de manière à permettre le fonctionnement en disjoncteur.The articulated and sliding connection 25 is designed so as not to leave a degree of freedom to the axis 23 so as to allow operation in contactor while leaving a degree of freedom to this axis 23 so as to allow operation in circuit breaker .

La coulisse 25 sera, de manière avantageuse, ouverte de manière à permettre le dégagement de l'axe 23 et, par voie de conséquence, le démontage.The slide 25 will advantageously be open so as to allow the release of the axis 23 and, consequently, disassembly.

Le contacteur-disjoncteur de la figure 9 comprend un module de protection magnétique et thermique 6 muni, sur chaque chemin de courant, d'un dispositif magnétique à déclenchement instantané destiné à assurer la protection contre les fortes surintensités et, sur chaque chemin de courant, d'un dispositif thermique destiné à assurer la protection contre les surcharges et le déséquilibre des phases. Lorsque le module de protection décèle une surcharge ou une surintensité sur un chemin de courant, il agit sur le porte-contacts par l'intermédiaire de la serrure 5.The contactor-circuit breaker of FIG. 9 comprises a magnetic and thermal protection module 6 provided, on each current path, with a magnetic device with instantaneous tripping intended to ensure protection against high overcurrents and, on each current path, a thermal device intended to provide protection against overloads and phase imbalance. When the protection module detects an overload or an overcurrent on a current path, it acts on the contact carrier via the lock 5.

Tous les ordres de fonctionnement manuel ou de déclenchement transitent au travers de la serrure 5 qui agit mécaniquement sur un contact qui est raccordé en série avec la bobine 43 de l'électroaimant. La serrure 5 peut être actionnée manuellement par un bouton de commande 51 ou automatiquement par des ordres en provenance du module de protection 6. Les différents états du mécanisme sont matérialisés par la position du bouton de commande 51.All manual or trip operating orders pass through the lock 5 which acts mechanically on a contact which is connected in series with the coil 43 of the electromagnet. The lock 5 can be actuated manually by a control button 51 or automatically by orders from the protection module 6. The different states of the mechanism are materialized by the position of the control button 51.

Le fonctionnement du contacteur-disjoncteur va maintenant être décrit.The operation of the contactor-circuit breaker will now be described.

Sur les figures 10 et 11, la serrure 5 est armée. Lorsque la bobine 43 est alimentée, l'électroaimant 4 est fermé et met la genouillère 21-22 en position déployée (figure 10). La genouillère fait pivoter la manivelle d'entraînement 17 et le pont de contacts 11 associé de manière que les pôles se ferment. Les ressorts de pression logés dans le porte-contacts 12 agissent de manière à appliquer le pont 11 contre les contacts fixes.In Figures 10 and 11, the lock 5 is armed. When the coil 43 is energized, the electromagnet 4 is closed and puts the toggle 21-22 in the deployed position (Figure 10). The toggle pivots the drive crank 17 and the associated contact bridge 11 so that the poles close. The pressure springs housed in the contact carrier 12 act so as to apply the bridge 11 against the fixed contacts.

Lorsque la bobine n'est pas ou n'est plus alimentée, le circuit magnétique mobile 42 et la biellette de liaison 24 amènent la genouillère 21-22 en position pliée. Le repliement de la genouillère 21-22 entraîne le pivotement du pont de contacts 11 et l'ouverture des pôles (figure 11). Cette ouverture se produit par intervention sur le circuit de commande de la bobine ce qui est le fonctionnement normal d'un contacteur. Dans le cas de ces figures 10 et 11, la serrure est en position armée et la liaison est positive entre la liaison coulissante 25 et l'axe 23.When the coil is not or is no longer supplied, the mobile magnetic circuit 42 and the connecting rod 24 bring the toggle switch 21-22 in the folded position. The folding of the toggle joint 21-22 causes the pivoting of the contact bridge 11 and the opening of the poles (FIG. 11). This opening occurs by intervention on the control circuit of the coil which is the operation normal of a contactor. In the case of these FIGS. 10 and 11, the lock is in the armed position and the connection is positive between the sliding connection 25 and the axis 23.

A partir de la position pôles fermés qui est illustrée par la figure 10, l'ouverture peut se produire soit comme dans le cas précédent soit sur court-circuit ou surcharge. Dans ce cas la serrure 5 se déclenche (figure 12) et déplace l'ensemble de la genouillère 21-22. Celle-ci en se déplaçant fait pivoter le porte-contacts 11 et les pôles s'ouvrent. A partir de cette position la bobine cesse d'être alimentée et l'électroaimant s'ouvre (figure 13). L'ouverture de l'électroaimant n'influe pas sur les contacts du fait qu'il n'y a plus de liaison positive entre la liaison coulissante 25 et l'axe 23.From the closed pole position which is illustrated in Figure 10, the opening can occur either as in the previous case or on short circuit or overload. In this case the lock 5 is released (Figure 12) and moves the entire toggle 21-22. The latter, by moving, rotates the contact carrier 11 and the poles open. From this position the coil ceases to be supplied and the electromagnet opens (Figure 13). The opening of the electromagnet does not influence the contacts because there is no longer a positive connection between the sliding connection 25 and the axis 23.

Les biellettes 21-22 constituant la genouillère auront des positions relatives différentes, en position déployée, selon l'effort et de la vitesse du contact souhaités, en fonction de la vitesse de l'électroaimant.The links 21-22 constituting the toggle joint will have different relative positions, in the deployed position, according to the force and the speed of the contact desired, as a function of the speed of the electromagnet.

Pour opérer le réarmement, l'opérateur manoeuvre le bouton 51 ce qui plie la genouillère 22-21. L'électroaimant reste ouvert.To operate the reset, the operator operates the button 51 which folds the toggle switch 22-21. The electromagnet remains open.

Pour changer les cartouches 1, on désaccouple la biellette 21 et le levier 17 en faisant basculer la biellette 21, Le bloc contenant la serrure 5 et la genouillère 21-22 peut alors être dégagé. Il est ensuite facile de changer les cartouches 1.To change the cartridges 1, the connecting rod 21 and the lever 17 are uncoupled by tilting the connecting rod 21. The block containing the lock 5 and the toggle joint 21-22 can then be released. It is then easy to change the cartridges 1.

Dans tous les modes de réalisation, les liaisons démontables entre les leviers 17 et le mécanisme de changement de mouvement permettent le démontage et le remplacement des cartouches 1. Par ailleurs les tronçons conducteurs logés dans les cartouches peuvent être séparés des tronçons conducteurs allant aux bornes 16 et 18.In all the embodiments, the removable links between the levers 17 and the movement change mechanism allow the disassembly and replacement of the cartridges 1. Furthermore, the conductive sections housed in the cartridges can be separated from the conductive sections going to the terminals 16 and 18.

Il est bien entendu que l'on peut sans sortir du cadre de l'invention, imaginer des variantes et des perfectionnements de détail et de même envisager l'emploi de moyens équivalents.It is understood that it is possible, without departing from the scope of the invention, to imagine variants and improvements in detail and even to envisage the use of equivalent means.

Dans le cas d'une version discontacteur, un module de protection thermique est ajouté au contacteur.In the case of a discontactor version, a thermal protection module is added to the contactor.

Les cartouches 1 peuvent être disposées à l'arrière de l'appareil ou à l'avant ou sur le côté. Les bras de leviers peuvent être adaptés.The cartridges 1 can be arranged at the rear of the device or at the front or on the side. The lever arms can be adapted.

Claims (13)

  1. Switch apparatus fitted with at least one power pole containing a contact holder (12) equipped with a contact bridge (11) which co-operates with fixed contacts (13, 14) and which can be activated by an electromagnet (4) or a locking mechanism (5) , characterized by the fact that the pressure springs (19) are fitted between the contact bridge (11) and the contact holder (12), and that an activating mechanism (21, 22, 23, 24, 25), which may be moved independently either by the electromagnet (4) or by the locking mechanism (5), acts on a driving part (17) of the contact holder so as to allow it to operate independently as a contactor or circuit breaker.
  2. Apparatus of claim 1 characterized by the fact that the contact bridge (11) is housed in a cartridge (1), forming the sectioning chamber.
  3. Apparatus of claim 2 characterized by the fact that each cartridge (2) has a drive crank (17) from the contact bridge which extends to the outside of the envelope of the said cartridge and is linked by the activating mechanism (2) to the moving parts of the electromagnet.
  4. Apparatus of claim 3 characterized by the fact that the drive crank (17) is mechanically coupled to a link assembly (21 - 22) and that the moving parts (42) of the electromagnet act on the link assembly pin (23).
  5. Apparatus of claim 4 characterized by the fact that one of the link arms of the link assembly (21-22) is hinged on a fixed point (221).
  6. Apparatus of claim 1, 2 or 3, characterized by the fact that each drive crank (17) of a rotating contact holder is connected by a link to a link arm (28) which pivots on a fixed pin (281) whose pivoting movement is controlled by the electromagnet.
  7. Apparatus of claim 1, 2 or 3, characterized by the fact that it has a link arm (24) coupled by a first hinged link (27, 45) to the moving parts of the electromagnet and by a second hinged link (171) to the drive crank (17) of each cartridge (1).
  8. Apparatus of claim 7 characterized by the fact that the second hinged link (171) may be removed.
  9. Apparatus of claim 1 characterized by the fact that it has devices (21 - 22) for mechanically coupling the contact holders (11) and a lock (5), and devices for mechanically and independently coupling the said contact holder (11) to the moving parts of the electromagnet.
  10. Apparatus of claim 9 characterized by the fact that the contact holder (11) is mechanically linked to the lock (5) by means of a link assembly (21 - 22) and that the moving parts of the electromagnet act on the link assembly pin (23) by means of a sliding, hinged connection (25), which permits independent operation as a contactor or circuit breaker.
  11. Apparatus of claim 10 characterized by the fact that the sliding connection (25) is formed by a slide groove (25) in the link arm (24) and in which the link assembly pin (23) slides.
  12. Apparatus of claim 11 characterized by the fact that the slide groove (25) is open-ended so as to permit dismantling.
  13. Apparatus as claimed in any of the above claims characterized by the fact that it has a protection module (6).
EP94400614A 1993-03-25 1994-03-22 Switching apparatus Expired - Lifetime EP0617449B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9303562A FR2703185B1 (en) 1993-03-25 1993-03-25 Electromagnetic switch device.
FR9303562 1993-03-25
FR9311481A FR2710453B1 (en) 1993-09-24 1993-09-24 Contactor-circuit breaker device.
FR9311481 1993-09-24

Publications (2)

Publication Number Publication Date
EP0617449A1 EP0617449A1 (en) 1994-09-28
EP0617449B1 true EP0617449B1 (en) 1997-10-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94400614A Expired - Lifetime EP0617449B1 (en) 1993-03-25 1994-03-22 Switching apparatus

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US (1) US5534832A (en)
EP (1) EP0617449B1 (en)
JP (1) JPH07312133A (en)
CA (1) CA2119839A1 (en)
DE (1) DE69406334T2 (en)

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Also Published As

Publication number Publication date
EP0617449A1 (en) 1994-09-28
DE69406334D1 (en) 1997-11-27
DE69406334T2 (en) 1998-02-26
JPH07312133A (en) 1995-11-28
US5534832A (en) 1996-07-09
CA2119839A1 (en) 1994-09-26

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