EP0017575A1 - Contactor with rapid opening in the event of a fault - Google Patents

Contactor with rapid opening in the event of a fault Download PDF

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Publication number
EP0017575A1
EP0017575A1 EP80400424A EP80400424A EP0017575A1 EP 0017575 A1 EP0017575 A1 EP 0017575A1 EP 80400424 A EP80400424 A EP 80400424A EP 80400424 A EP80400424 A EP 80400424A EP 0017575 A1 EP0017575 A1 EP 0017575A1
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EP
European Patent Office
Prior art keywords
contactor
armature
contact
contact carrier
contacts
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.)
Granted
Application number
EP80400424A
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German (de)
French (fr)
Other versions
EP0017575B2 (en
EP0017575B1 (en
Inventor
Raymond Bresson
André Ducluzaux
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0017575A1 publication Critical patent/EP0017575A1/en
Application granted granted Critical
Publication of EP0017575B1 publication Critical patent/EP0017575B1/en
Publication of EP0017575B2 publication Critical patent/EP0017575B2/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/222—Power arrangements internal to the switch for operating the driving mechanism using electrodynamic repulsion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • 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

Definitions

  • a contactor of the type mentioned is designed to carry out a large number of opening and closing operations, which are frequently remotely controlled. It is capable of providing protection, particularly of a motor, in the event of an overload, but incapable of breaking a high short-circuit current. It is therefore advisable to associate it with fuses or a circuit breaker and, where appropriate, a disconnector to assume respectively the short-circuit protection function and the disconnection function.
  • a circuit breaker can provide isolation and protection, but its endurance is limited. An installation having a juxtaposed contactor and circuit breaker is complicated, expensive and cumbersome.
  • the present invention starts from the observation that the contactors and the circuit breakers belong to the family of connection devices and have a large number of similar constituent elements, such as terminals, contacts, breaking chambers, current detectors, etc. It aims to remedy the aforementioned drawbacks and to allow the realization of an apparatus ensuring the contactor function and the circuit breaker function without duplication of the basic constituent elements.
  • the contactor according to the present invention is characterized by an electrodynamic rapid opening trip device associated with said contactor block and comprising a winding, a conductive disc placed in the rest position facing and at a short distance from one face of the winding and a striker integral with said disk to strike the armature assembly, contact carrier, during the winding supply and repulsion by electrodynamic effect of said disk to move the armature assembly, contact carrier, against the force of attraction of the armature by the cylinder head, in an open position of the contacts.
  • an electrodynamic rapid opening trip device associated with said contactor block and comprising a winding, a conductive disc placed in the rest position facing and at a short distance from one face of the winding and a striker integral with said disk to strike the armature assembly, contact carrier, during the winding supply and repulsion by electrodynamic effect of said disk to move the armature assembly, contact carrier, against the force of attraction of the armature by the cylinder head, in an open position of the contacts.
  • a contactor is given good breaking capacity by imposing a rapid displacement of the moving assembly and a very rapid opening of the contacts during a short circuit to obtain a significant limiting effect.
  • use is made of a standard contactor to which an electrodynamic trip unit is added on demand.
  • the rapid opening command with electrodynamic effect constitutes a block housed in a molded case capable of being attached to the case of the contactor block.
  • a mechanical link between the two blocks transmits the rapid opening command to the moving part of the contactor, this rapid command becoming active exclusively during an opening on short circuit.
  • the electrodynamic control is capable of moving the mobile assembly formed by the armature, the contact carrier and the movable contact against the force of attraction of the armature towards the open position of the contacts by breaking the if necessary, soldered contacts.
  • the coil of the electromagnet attracting the armature is preferably supplied with direct current or rectified with a self-holding contact, which opens from the start of the movement of the moving assembly in position d 'opening to confirm this opening.
  • the contactor can also be of the type with magnetic retention by remanence; there is then no contact to cut.
  • the contactor with rapid opening control giving it a high breaking capacity, can constitute a protective device, in particular of an electric motor, the same current transformer for detecting an overload or a short circuit. controlling respectively a normal opening by de-excitation of the control of the contactor block or a rapid opening by the electrodynamic trip device.
  • the contact carrier is common to the different poles as well as the closing control electromagnet and the rapid opening electrodynamic release.
  • the mobile assembly is preferably mobile in translation and carries one or more contact bridges ensuring a double break.
  • the trip unit comprises a mechanical locking of the striker in the position of opening of the contacts of the contactor unit which confirms and displays this state of opening of the contacts and of disconnection and keeps the device blocked in position d : 'opening, thus requiring intervention to rearm the device.
  • the connection device according to the invention assumes the triple role of operating contactor and overload protection, of short-circuit protection circuit breaker and of safety disconnector from of simple and standard modular elements.
  • a contactor block 10 with molded housing 12 has input and output terminals 14, 16, connected to fixed contacts 18, 20, which cooperate with a movable contact bridge 22.
  • -Cut-off chambers 24, 26 are associated with the contacts 18, 22; 20, 22 to extinguish the arcs drawn between these contacts during their separation.
  • the different poles of the contactor are advantageously housed in the same housing 12, and the contact bridges 22 of the different poles are carried by the same contact holder 28 slidably mounted to open or close the contacts 18, 20, 22.
  • the bridge contact 22 passes through a light 30 formed in the contact holder 28, to allow limited relative movement in the sliding direction against a leaf spring 32 of contact pressure.
  • the contact carrier 28 constitutes a one-piece assembly or is rigidly secured to a U-shaped frame 34, which cooperates with a yoke 36 of conjugate U shape.
  • a coil 38 of excitation surrounds the two legs of the yoke 36 to constitute an electromagnetic control well known per se, for moving the moving element formed by the armature 34, the contact carrier 28 and the contact bridges 22.
  • a spring 40 urges this moving element in the open position of the contacts 18, 20, 22; moving and maintaining the closed position of the contacts resulting from a supply of the coil 38 by a direct current source, shown in the figures by an accumulator 42.
  • the coil supply circuit 38 comprises in series a self-supply contact 44 and a trip contact 46, interrupting the supply of the coil 38 by opening any one of these contacts 44, 46.
  • the contact 44 is controlled by the armature 34. It remains closed when the armature 34 is drawn and pressed against the cylinder head 36, and it opens when the armature 34 comes off the cylinder head 36
  • An electrical control circuit 50 with a push button 52 bypasses the contact 44 to control the excitation of the coil 38, the contact 44 ensuring the self-supply of the coil 38 as soon as the armature 34 is attracted even after the opening of the push button 52.
  • the block 10 constitutes a standard contactor, the operation of which is briefly recalled below.
  • the contacts 18, 20, 22 of the contactor are open.
  • the actuation of the push button 52 controls the closing of the contacts 18, 20, 22 by attraction of the armature 34 by the energized coil 38.
  • the contact 44 ensures the self-supply of the coil 38.
  • This supply can be interrupted by the opening of the contact 44 by a manual control, not shown, or by interruption of the supply by any other operating means for controlling the contactor opening.
  • the contactor 10 can provide control and overload protection for an electric motor (not shown), and a large number of opening and closing operations.
  • the opening speed of the contacts 18, 20, 22, derived from the force of the spring 40 is relatively low, which limits the breaking capacity of the contactor 10.
  • the invention consists in associating with the standard contactor 10 an electrodynamic trip device 58 of the type described in French patent No. 2,357,048.
  • the molded housing 60 of the electrodynamic trip device 58 is attached and fixed by screws (not shown) to the housing 12 of the contactor 10.
  • An elongated striker 62 extends and is movable in the direc tion of movement of the movable assembly 34, 28, 22 of the contactor 10, passing through aligned orifices 64 formed in the housings 12, 160.
  • the end of the striker 62 internal to the housing 60, carries a conductive disc 66, disposed opposite a winding 68 embedded in a fixed support 70.
  • the opposite end of the striker 62 is arranged opposite and cooperates with a stop 72 carried by the frame 34.
  • the in. seems to be arranged in such a way that in the attracted position of the armature 34 and of placing the disc 66 on the coil 68 there remains only a slight clearance between the stop 72 and the striker 62.
  • the winding 68 is connected to a de-capacitor battery 74 with the interposition of a contact 76.
  • the charging circuit of the capacitors 74 is not shown in the figures.
  • the closing of the contact 76 triggers a discharge of the capacitors 74 in the winding 68 and a Thomson repulsion of the disc 66, which drives the striker 62 in its movement.
  • a control unit 78 of the contact 76 is connected to a current transformer 56 to cause the contact 76 to close when a short-circuit current is detected by the current transformer 56.
  • the lock represented by a sliding bolt 80, interferes in the active position with the path of movement of the disc 66 to lock the latter in repulsion position corresponding to the opening of the contacts of the contactor, consecutively at one. short circuit.
  • the latch 80 can be actuated from outside the housing 60 and can only come into the active position in the repulsed position of the disc 66 and the opening of the contactor. It confirms this opening and ensures the sectioning.
  • Locking in the open position can be achieved by any device other than that shown at 80, in particular by locking the pin 62.
  • the contactor according to the invention operates in the manner ' next :
  • the excited coil 38 keeps the moving element 34, 28, 22 in the attracted position for closing the contacts 18, 20, 22.
  • the contactor can be opened by de-energizing the coil 38 by means of a manual control.
  • the closure is controlled by the push button 52 in the aforementioned manner.
  • the electrodynamic trip device 58 does not intervene.
  • An opening on short-circuit is controlled by the current transformer 56, which sees the fault and generates by means of the command 78 a closing of the contact 76.
  • the capacitors 74 discharge in the winding 68 and the disc 66 is repelled energetically by Thomson effect.
  • the striker 62 strikes the stop 72 with sufficient force to tear off the frame 34 of the cylinder head 36.
  • the movable assembly 34, 28, 22 quickly moves to the open position of the contacts 18, 20 , 22 by simultaneously causing the opening of the self-supply contact 44 and the de-excitation of the coil 38.
  • the spring 40 maintains the contacts 18, 20, 22 in the open position. This opening movement is very rapid and occurs before any attempt to open by de-energizing the coil 38.
  • the electrodynamic action of the trigger 58 overcomes the electromagnetic attraction of the armature 34.
  • the rapid opening of the contacts 18, 20, 22 gives the contactor breaking capacity allowing it to assume the function of circuit breaker.
  • the contactor is normally closed by pressing the push button 52.
  • the electrodynamic trip device 58 can also serve as a quick remote opening command.
  • the endurance of the contactor is not affected by the rapid opening command, which intervenes only in the event of a short circuit and exceptionally.
  • the moving element 34, 28, 22 of the contactor can be locked in the open position of the contacts 18, 20, 22 by the latch 80, which engages under the repelled disc 66.
  • a spring (not shown), urging the disc 66, striker 62 in repulsed position, facilitates the engagement of the lock 80.
  • the position in which the lock 80 is pressed confirms and signals the cutting.
  • the electrodynamic trip device can be associated with a standard contactor without significant modification of the latter and that the invention is applicable to different types of contactors, in particular with remanence.
  • the invention is in no way limited to the mode of implementation more particularly described.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Push-Button Switches (AREA)
  • Protection Of Generators And Motors (AREA)

Abstract

Un bloc déclencheur (58) à effet Thomson est associé au contacteur (10) pour déplacer rapidement les contacts (18, 20, 22) en position d'ouverture à l'encontre de la force électromagnétique de fermeture des contacts. Le contacteur peut être appliqué à la protection de moteurs.A Thomson effect trip unit (58) is associated with the contactor (10) for rapidly moving the contacts (18, 20, 22) to the open position against the electromagnetic force of closing the contacts. The contactor can be applied to motor protection.

Description

L'invention est relative à un contacteur à commande électromagnétique ayant un bloc contacteur comprenant :

  • - une bobine d'excitation d'une culasse magnétique,
  • - une armature mobile coopérant avec ladite culasse,
  • - un support porte-contact solidaire de ladite armature,
  • - un contact fixe coopérant avec un contact mobile porté par ledit porte-contact, lesdits contacts étant amenés et maintenus en position fermée par attraction de ladite armature par la culasse lors de l'excitation de la bobine,
  • - un dispositif de rappel de l'ensemble armature, porte-contact en position d'ouverture desdits contacts lors d'une désexcitation de la bobine.
The invention relates to a contactor with electromagnetic control having a contactor block comprising:
  • - an excitation coil of a magnetic yoke,
  • - a movable frame cooperating with said cylinder head,
  • a contact carrier support integral with said frame,
  • a fixed contact cooperating with a movable contact carried by said contact carrier, said contacts being brought into and held in the closed position by attraction of said armature by the yoke during excitation of the coil,
  • - A return device for the armature assembly, contact carrier in the open position of said contacts when the coil is de-energized.

Un contacteur du genre mentionné est conçu pour effectuer un grand nombre dé manoeuvres d'ouverture et de fermeture, fréquemment télécommandées. Il est capable d'assurer une protection, notamment d'un moteur, en cas de surcharge, mais incapable de couper un courant de court-circuit élevé. Il convient donc de lui associer des fusibles ou un disjoncteur et le cas échéant un sectionneur pour assumer respectivement la fonction de protection contre les courts-circuits et la fonction de sectionnement. Un disjoncteur peut assurer le sectionnement et la protection, mais son endurance est limitée. Une installation ayant un contacteur et un disjoncteur juxtaposés est compliquée, coûteuse et encombrante.A contactor of the type mentioned is designed to carry out a large number of opening and closing operations, which are frequently remotely controlled. It is capable of providing protection, particularly of a motor, in the event of an overload, but incapable of breaking a high short-circuit current. It is therefore advisable to associate it with fuses or a circuit breaker and, where appropriate, a disconnector to assume respectively the short-circuit protection function and the disconnection function. A circuit breaker can provide isolation and protection, but its endurance is limited. An installation having a juxtaposed contactor and circuit breaker is complicated, expensive and cumbersome.

La présente invention part de la constatation que les contacteurs et les disjoncteurs appartiennent à la famille des appareils de connexion et présentent un grand nombre d'éléments constitutifs analogues, tels que bornes, contacts, chambres de coupure, détecteurs de courant, etc... Elle a pour but de remédier aux inconvénients précités et de permettre la réalisation d'un appareil assurant la fonction contacteur et la fonction disjoncteur sans dédoublement des éléments constitutifs de base.The present invention starts from the observation that the contactors and the circuit breakers belong to the family of connection devices and have a large number of similar constituent elements, such as terminals, contacts, breaking chambers, current detectors, etc. It aims to remedy the aforementioned drawbacks and to allow the realization of an apparatus ensuring the contactor function and the circuit breaker function without duplication of the basic constituent elements.

Le contacteur selon la présente invention est caractérisé par un déclencheur électrodynamique d'ouverture rapide associé audit bloc contacteur et comprenant un bobinage, un disque conducteur disposé en position de repos en regard et à faible distance d'une face du bobinage et un percuteur solidaire dudit disque pour venir frapper l'ensemble armature, porte-contact, lors de l'alimentation du bobinage et d'une répulsion par effet électrodynamique dudit disque pour déplacer l'ensemble armature, porte-contact, à l'encontre de la force d'attraction de l'armature par la culasse, en une position d'ouverture des contacts.The contactor according to the present invention is characterized by an electrodynamic rapid opening trip device associated with said contactor block and comprising a winding, a conductive disc placed in the rest position facing and at a short distance from one face of the winding and a striker integral with said disk to strike the armature assembly, contact carrier, during the winding supply and repulsion by electrodynamic effect of said disk to move the armature assembly, contact carrier, against the force of attraction of the armature by the cylinder head, in an open position of the contacts.

On confère à un contacteur un bon pouvoir de coupure en imposant un déplacement rapide de l'équipage mobile et une ouverture très rapide des contacts lors d'un court-circuit pour obtenir un effet de limitation important. Il est fait avantageusement usage d'un contacteur standard auquel on adjoint un bloc déclencheur électrodynamique à la demande. Les avantages de tels systèmes modulaires, notamment de réduction du coût de fabrication et de stockage sont bien connus.A contactor is given good breaking capacity by imposing a rapid displacement of the moving assembly and a very rapid opening of the contacts during a short circuit to obtain a significant limiting effect. Advantageously, use is made of a standard contactor to which an electrodynamic trip unit is added on demand. The advantages of such modular systems, in particular of reducing the manufacturing and storage cost are well known.

Il a déjà été proposé de conférer aux contacts d'un contacteur une possibilité d'ouverture rapide par rupture de la liaison entre les contacts et l'armature et par déplacement des contacts vers la position d'ouverture par effet électromagnétique. Ces modifications affectent la structure du contacteur et s'opposent à la réalisation d'un système modulaire.It has already been proposed to give the contacts of a contactor the possibility of rapid opening by breaking the connection between the contacts and the armature and by moving the contacts to the opening position by electromagnetic effect. These modifications affect the structure of the contactor and prevent the creation of a modular system.

La commande d'ouverture rapide à effet électrodynamique constitue un bloc logé dans un boîtier moulé susceptible d'être accolé au boîtier du bloc contacteur. Une liaison mécanique entre les deux blocs transmet la commande d'ouverture rapide à l'équipage mobile du contacteur, cette commande rapide devenant active exclusivement lors d'une ouverture sur court-circuit.The rapid opening command with electrodynamic effect constitutes a block housed in a molded case capable of being attached to the case of the contactor block. A mechanical link between the two blocks transmits the rapid opening command to the moving part of the contactor, this rapid command becoming active exclusively during an opening on short circuit.

La commande électrodynamique est capable de déplacer l'équipage mobile formé par l'armature, le porte-contact et le contact mobile à l'encontre de la force d'attraction de l'armature vers la position d'ouverture des contacts en rompant le cas échéant des contacts soudés. La bobine de l'électro-aimant d'attraction de l'armature est alimentée de préférence en courant continu ou redressé avec un contact d'auto-maintien, qui s'ouvre dès le début du déplacement de l'équipage mobile en position d'ouverture pour confirmer cette ouverture. Le contacteur peut également être du type à accrochage magnétique par rémanence; il n'y a alors aucun contact à couper.The electrodynamic control is capable of moving the mobile assembly formed by the armature, the contact carrier and the movable contact against the force of attraction of the armature towards the open position of the contacts by breaking the if necessary, soldered contacts. The coil of the electromagnet attracting the armature is preferably supplied with direct current or rectified with a self-holding contact, which opens from the start of the movement of the moving assembly in position d 'opening to confirm this opening. The contactor can also be of the type with magnetic retention by remanence; there is then no contact to cut.

Le contacteur, à commande d'ouverture rapide lui conférant un pouvoir de coupure élevé, peut-constituer un appareil de protection, notamment d'un moteur électrique, le même transformateur de courant de détection d'une surcharge ou d'un court-circuit pilotant respectivement une ouverture normale par désexcitation de la commande du bloc contacteur ou une ouverture rapide par le déclencheur électrodynamique.The contactor, with rapid opening control giving it a high breaking capacity, can constitute a protective device, in particular of an electric motor, the same current transformer for detecting an overload or a short circuit. controlling respectively a normal opening by de-excitation of the control of the contactor block or a rapid opening by the electrodynamic trip device.

Dans le cas d'un contacteur multipolaire le porte-contact est commun aux différents pôles ainsi que l'électro-aimant de commande de fermeture et le déclencheur électrodynamique d'ouverture rapide. L'équipage mobile est de préférence mobile en translation et porte un ou des ponts de contacts assurant une double coupure.In the case of a multi-pole contactor, the contact carrier is common to the different poles as well as the closing control electromagnet and the rapid opening electrodynamic release. The mobile assembly is preferably mobile in translation and carries one or more contact bridges ensuring a double break.

Selon un développement de l'invention, le bloc déclencheur comporte un verrouillage mécanique du percuteur en position d'ouverture des contacts du bloc contacteur qui confirme et visualise cet état d'ouverture des contacts et de sectionnement et maintient l'appareil bloqué en position d:'ouverture, imposant ainsi une intervention pour réarmer l'appareil. L'appareil de connexion selon l'invention assume le triple rôle de contacteur de manoeuvre et protection contre les surcharges, de disjoncteur de protection contre les courts-circuits et de sectionneur de sécurité à partir d'éléments modulaires simples et standard.According to a development of the invention, the trip unit comprises a mechanical locking of the striker in the position of opening of the contacts of the contactor unit which confirms and displays this state of opening of the contacts and of disconnection and keeps the device blocked in position d : 'opening, thus requiring intervention to rearm the device. The connection device according to the invention assumes the triple role of operating contactor and overload protection, of short-circuit protection circuit breaker and of safety disconnector from of simple and standard modular elements.

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

  • les figures 1 et 2 sont des vues schématiques en coupe axiale d'un contacteur selon l'invention, respectivement en position de fermeture et d'ouverture.
Other advantages and characteristics will emerge more clearly from the description which follows of an embodiment of the invention, given by way of nonlimiting example and shown, in the appended drawings, in which:
  • Figures 1 and 2 are schematic views in axial section of a contactor according to the invention, respectively in the closed and open position.

Sur les figures, un bloc contacteur 10 à boîtier moulé 12, présente des bornes d'entrée et de sortie 14, 16, reliées à des contacts fixes 18, 20, qui coopèrent avec un pont de contact mobile 22.-Des chambres de coupure 24, 26 sont associées aux contacts 18, 22; 20, 22 pour éteindre les arcs tirés entre ces contacts lors de leur séparation. Les différents pôles du contacteur sont avantageusement logés dans le même boîtier 12, et les ponts de contacts 22 des différents pôles sont portés par un même porte-contact 28 monté à coulissement pour ouvrir ou fermer les contacts 18, 20, 22. Le pont de contact 22 traverse une lumière 30 ménagée dans le porte-contact 28, pour permettre un mouvement relatif limité dans la direction de coulissement à l'encontre d'un ressort à lame 32 de pression de contact.In the figures, a contactor block 10 with molded housing 12 has input and output terminals 14, 16, connected to fixed contacts 18, 20, which cooperate with a movable contact bridge 22.-Cut-off chambers 24, 26 are associated with the contacts 18, 22; 20, 22 to extinguish the arcs drawn between these contacts during their separation. The different poles of the contactor are advantageously housed in the same housing 12, and the contact bridges 22 of the different poles are carried by the same contact holder 28 slidably mounted to open or close the contacts 18, 20, 22. The bridge contact 22 passes through a light 30 formed in the contact holder 28, to allow limited relative movement in the sliding direction against a leaf spring 32 of contact pressure.

Le porte-contact 28 constitue un ensemble monobloc ou est rigidement assujetti à une armature 34 en forme de U, qui coopère avec une culasse 36 de forme conjuguée en U. Une bobine 38 d'excitation entoure les deux jambes de la culasse 36 pour constituer une commande électromagnétique bien connue en soi, de déplacement de l'équipage mobile formé par l'armature 34, le porte-contact 28 et les ponts de contacts 22. Un ressort 40 sollicite cet équipage mobile en position d'ouverture des contacts 18, 20, 22; le déplacement et le maintien en position de fermeture des contacts résultant d'une alimentation de la bobine 38 par une source de courant continu, représentée sur les figures par un accumulateur 42. Le circuit d'alimentation de la bobine 38 comporte en série un contact d'auto-alimentation 44 et un contact de déclenchement 46, interrompant l'alimentation de la bobine 38 par l'ouverture de l'un quelconque de ces contacts 44, 46. Le contact 44 est piloté par l'armature 34. Il reste fermé lorsque l'armature 34 est attirée et plaquée sur la culasse 36, et il s'ouvre lorsque l'armature 34 se décolle de la culasse 36. Un circuit de commande électrique 50 à bouton poussoir 52 shunte le contact 44 pour commander l'excitation de la bobine 38, le contact 44 assurant l'auto-alimentation de la bobine 38 dès l'attraction de l'armature 34 même après l'ouverture du bouton poussoir 52.The contact carrier 28 constitutes a one-piece assembly or is rigidly secured to a U-shaped frame 34, which cooperates with a yoke 36 of conjugate U shape. A coil 38 of excitation surrounds the two legs of the yoke 36 to constitute an electromagnetic control well known per se, for moving the moving element formed by the armature 34, the contact carrier 28 and the contact bridges 22. A spring 40 urges this moving element in the open position of the contacts 18, 20, 22; moving and maintaining the closed position of the contacts resulting from a supply of the coil 38 by a direct current source, shown in the figures by an accumulator 42. The coil supply circuit 38 comprises in series a self-supply contact 44 and a trip contact 46, interrupting the supply of the coil 38 by opening any one of these contacts 44, 46. The contact 44 is controlled by the armature 34. It remains closed when the armature 34 is drawn and pressed against the cylinder head 36, and it opens when the armature 34 comes off the cylinder head 36 An electrical control circuit 50 with a push button 52 bypasses the contact 44 to control the excitation of the coil 38, the contact 44 ensuring the self-supply of the coil 38 as soon as the armature 34 is attracted even after the opening of the push button 52.

Il est facile de voir que le bloc 10 constitue un contacteur standard dont le fonctionnement est succinctement rappelé ci-après. En position de repos les contacts 18, 20, 22 du contacteur sont ouverts. L'actionnement du bouton poussoir 52 commande la fermeture des contacts 18, 20, 22 par attraction de l'armature 34 par la bobine 38 excitée. Le contact 44 assure l'auto-alimentation de la bobine 38. Cette alimentation peut être interrompue par l'ouverture du contact 44 par une commande manuelle, non représentée, ou par interruption de l'alimentation par tout autre moyen opérant pour commander l'ouverture du contacteur. Le contacteur 10 peut assurer la commande et la protection contre les surcharges d'un moteur électrique (non représenté), et un grand nombre de manoeuvres d'ouverture et de fermeture. La vitesse d'ouverture des contacts 18, 20, 22, dérivée de la force du ressort 40 est relativement faible, ce qui limite le pouvoir de coupure du contacteur 10.It is easy to see that the block 10 constitutes a standard contactor, the operation of which is briefly recalled below. In the rest position, the contacts 18, 20, 22 of the contactor are open. The actuation of the push button 52 controls the closing of the contacts 18, 20, 22 by attraction of the armature 34 by the energized coil 38. The contact 44 ensures the self-supply of the coil 38. This supply can be interrupted by the opening of the contact 44 by a manual control, not shown, or by interruption of the supply by any other operating means for controlling the contactor opening. The contactor 10 can provide control and overload protection for an electric motor (not shown), and a large number of opening and closing operations. The opening speed of the contacts 18, 20, 22, derived from the force of the spring 40, is relatively low, which limits the breaking capacity of the contactor 10.

L'invention consiste à associer au contacteur standard 10 un déclencheur électrodynamique 58 du type décrit dans le brevet français N° 2.357.048. Le boîtier moulé 60 du déclencheur électrodynamique 58 est accolé et fixé par des vis (non représentées) au boîtier 12 du contacteur 10. Un Percuteur allongé 62 s'étend et est mobile dans-la direction de déplacement de l'équipage mobile 34, 28, 22 du contacteur 10, en traversant des orifices alignés 64 ménagés dans les boîtiers 12, 160. L'extrémité du percuteur 62, interne au boîtier 60, porte un disque conducteur 66, disposé en regard d'un bobinage 68 encastré dans un support fixe 70. L'extrémité opposée du percuteur 62 est disposée en regard et coopère avec une butée 72 portée par l'armature 34. L'en- . semble est agencé de telle manière qu'en position attirée de l'armature 34 et de placage du disque 66 sur le bobinage 68 il ne subsiste qu'un faible jeu entre la butée 72 et le percuteur 62.The invention consists in associating with the standard contactor 10 an electrodynamic trip device 58 of the type described in French patent No. 2,357,048. The molded housing 60 of the electrodynamic trip device 58 is attached and fixed by screws (not shown) to the housing 12 of the contactor 10. An elongated striker 62 extends and is movable in the direc tion of movement of the movable assembly 34, 28, 22 of the contactor 10, passing through aligned orifices 64 formed in the housings 12, 160. The end of the striker 62, internal to the housing 60, carries a conductive disc 66, disposed opposite a winding 68 embedded in a fixed support 70. The opposite end of the striker 62 is arranged opposite and cooperates with a stop 72 carried by the frame 34. The in. seems to be arranged in such a way that in the attracted position of the armature 34 and of placing the disc 66 on the coil 68 there remains only a slight clearance between the stop 72 and the striker 62.

Le bobinage 68 est branché à une batterie deocondensateurs 74 avec interposition d'un contact 76. Le circuit de charge des condensateurs 74 n'est pas représenté sur les figures. La fermeture du contact 76 déclenche une décharge des condensateurs 74 dans le bobinage 68 et une répulsion par effet Thomson du disque 66, qui entraîne dans son déplacement le percuteur 62. Un bloc de commande 78 du contact 76 est relié à un transformateur de courant 56 pour provoquer la fermeture du contact 76 lors d'une détection d'un courant de court-circuit par le transformateur de courant 56.The winding 68 is connected to a de-capacitor battery 74 with the interposition of a contact 76. The charging circuit of the capacitors 74 is not shown in the figures. The closing of the contact 76 triggers a discharge of the capacitors 74 in the winding 68 and a Thomson repulsion of the disc 66, which drives the striker 62 in its movement. A control unit 78 of the contact 76 is connected to a current transformer 56 to cause the contact 76 to close when a short-circuit current is detected by the current transformer 56.

Le verrou, figuré par une targette coulissante 80, interfère en position active avec la trajectoire de déplacement du disque 66 pour verrouiller ce dernier en position de répulsion correspondant à l'ouverture des contacts du contacteur, consécutivement à un. court-circuit. Le verrou 80 peut être actionné de l'extérieur du boîtier 60 et ne peut venir en position active qu'en position répulsée du disque 66 et d'ouverture du contacteur. Il confirme cette ouverture et assure le sectionnement.The lock, represented by a sliding bolt 80, interferes in the active position with the path of movement of the disc 66 to lock the latter in repulsion position corresponding to the opening of the contacts of the contactor, consecutively at one. short circuit. The latch 80 can be actuated from outside the housing 60 and can only come into the active position in the repulsed position of the disc 66 and the opening of the contactor. It confirms this opening and ensures the sectioning.

Le verrouillage en position ouvert peut être réalisé par tout autre dispositif que celui figuré en 80, notamment par un verrouillage de l'axe 62.Locking in the open position can be achieved by any device other than that shown at 80, in particular by locking the pin 62.

Le contacteur selon l'invention fonctionne de la manière' suivante :The contactor according to the invention operates in the manner ' next :

Dans la position fermée du contacteur, représentée à la figure 1, la bobine 38 excitée maintient l'équipage mobile 34, 28, 22 en position attirée de fermeture des contacts 18, 20, 22. Le contacteur peut être ouvert par désexcitation de la bobine 38 au moyen d'une commande manuelle. La fermeture est commandée par le bouton poussoir 52 de la manière susmentionnée. Au cours de ce fonctionnement normal du contacteur le déclencheur électrodynamique 58 n'intervient pas.In the closed position of the contactor, shown in FIG. 1, the excited coil 38 keeps the moving element 34, 28, 22 in the attracted position for closing the contacts 18, 20, 22. The contactor can be opened by de-energizing the coil 38 by means of a manual control. The closure is controlled by the push button 52 in the aforementioned manner. During this normal operation of the contactor the electrodynamic trip device 58 does not intervene.

Une ouverture sur court-circuit est commandée par le transformateur de courant 56, qui voit le défaut et engendre par l'intermédiaire de la commande 78 une fermeture du contact 76. Les condensateurs 74 se déchargent dans le bobinage 68 et le disque 66 est répulsé énergiquement par effet Thomson. Dans ce déplacement le percuteur 62 frappe la butée 72 avec une force suffisante à l'arrachement de l'armature 34 de la culasse 36. L'équipage mobile 34, 28, 22 se déplace rapidement en position d'ouverture des contacts 18, 20, 22 en provoquant simultanément l'ouverture du contact 44 d'auto-alimentation et la désexcitation de la bobine 38. Le ressort 40 maintient les contacts 18, 20, 22 en position ouvert. Ce mouvement d'ouverture est ultrarapide et intervient avant toute tentative d'ouverture par désexcitation de la bobine 38. L'action électrodynamique du déclencheur 58 vainc l'attraction électromagnétique de l'armature 34. L'ouverture rapide des contacts 18, 20, 22 confère au contacteur un pouvoir de coupure lui permettant d'assumer la fonction de disjoncteur. La fermeture du contacteur s'effectue normalement par enfoncement du bouton poussoir 52. Le déclencheur électrodynamique 58 peut aussi servir de commande d'ouverture rapide à distance.An opening on short-circuit is controlled by the current transformer 56, which sees the fault and generates by means of the command 78 a closing of the contact 76. The capacitors 74 discharge in the winding 68 and the disc 66 is repelled energetically by Thomson effect. In this movement the striker 62 strikes the stop 72 with sufficient force to tear off the frame 34 of the cylinder head 36. The movable assembly 34, 28, 22 quickly moves to the open position of the contacts 18, 20 , 22 by simultaneously causing the opening of the self-supply contact 44 and the de-excitation of the coil 38. The spring 40 maintains the contacts 18, 20, 22 in the open position. This opening movement is very rapid and occurs before any attempt to open by de-energizing the coil 38. The electrodynamic action of the trigger 58 overcomes the electromagnetic attraction of the armature 34. The rapid opening of the contacts 18, 20, 22 gives the contactor breaking capacity allowing it to assume the function of circuit breaker. The contactor is normally closed by pressing the push button 52. The electrodynamic trip device 58 can also serve as a quick remote opening command.

L'endurance du contacteur n'est pas affectée par la commande d'ouverture rapide qui intervient seulement en cas de court-circuit et exceptionnellement.The endurance of the contactor is not affected by the rapid opening command, which intervenes only in the event of a short circuit and exceptionally.

L'équipage mobile 34, 28, 22 du contacteur peut être verrouillé en position d'ouverture des contacts 18, 20, 22 par le verrou 80, qui s'engage sous le disque 66 répulsé. Un ressort (non représenté), sollicitant l'ensemble disque 66, percuteur 62 en position répulsée, facilite l'engagement du verrou 80. La position d'enfoncement du verrou 80 confirme et signale le sectionnement.The moving element 34, 28, 22 of the contactor can be locked in the open position of the contacts 18, 20, 22 by the latch 80, which engages under the repelled disc 66. A spring (not shown), urging the disc 66, striker 62 in repulsed position, facilitates the engagement of the lock 80. The position in which the lock 80 is pressed confirms and signals the cutting.

Il est facile de voir que le déclencheur électrodynamique peut être associé à un contacteur standard sans modification notable de ce dernier et que l'invention est applicable à différents types de contacteurs, notamment à rémanence.It is easy to see that the electrodynamic trip device can be associated with a standard contactor without significant modification of the latter and that the invention is applicable to different types of contactors, in particular with remanence.

L'invention est nullement limitée au mode de mise en oeuvre plus particulièrement décrit.The invention is in no way limited to the mode of implementation more particularly described.

Claims (9)

1. Contacteur à commande électromagnétique ayant un bloc contacteur (10), comprenant : - une bobine (38) d'excitation d'une culasse (36) magnétique, - une armature (34) mobile coopérant avec ladite culasse (36) - un support porte-contact (28) solidaire de ladite armature (34), - un contact fixe (18, 20) coopérant avec un contact mobile (22) porté par ledit porte-contact (28), lesdits contacts étant amenés et maintenus en position fermée par attraction de ladite armature (34) par la culasse (36) lors de l'excitation de la bobine (38), - un dispositif de rappel (40) de l'ensemble armature (34), porte-contact (28) en position d'ouverture desdits contacts lors d'une désexcitation de la bobine (38), - caractérisé par un déclencheur électrodynamique (58) d'ouverture rapide associé audit bloc contacteur (10) et comprenant un bobinage (68), un disque (66) conducteur dis~ posé en position de repos en regard=et à faible distance d'une face du bobinage (68) et un percuteur (62) solidaire dudit disque (66) pour venir frapper l'ensemble armature, porte-contact, lors de l'alimentation du bobinage (68) et d'une répulsion par effet électrodynamique dudit disque (66) pour déplacer l'ensemble armature, porte-contact, à l'encontre de la force d'attraction de l'armature (34) par la culasse (36), en une position d'ouverture des contacts. 1. Electromagnetically controlled contactor having a contactor block (10), comprising: - a coil (38) for exciting a magnetic yoke (36), - a movable frame (34) cooperating with said cylinder head (36) a contact carrier support (28) integral with said frame (34), - A fixed contact (18, 20) cooperating with a movable contact (22) carried by said contact carrier (28), said contacts being brought and maintained in the closed position by attraction of said frame (34) by the cylinder head (36) during the excitation of the coil (38), - a return device (40) of the armature assembly (34), contact carrier (28) in the open position of said contacts when the coil (38) is de-energized, - characterized by an electrodynamic trip device (58) quick opening associated with said contactor block (10) and comprising a winding (68), a disc (66) conductor dis ~ placed in the rest position facing = and at a short distance from a face of the winding (68) and a striker (62) integral with said disc (66) to strike the armature assembly, contact carrier, during the supply of the winding (68) and repulsion by electrodynamic effect of said disc (66) for moving the armature assembly, contact carrier, against the force of attraction of the armature (34) by the yoke (36), in an open position of the contacts. 2. Contacteur selon la revendication 1, caractérisé en ce que ledit déclencheur électrodynamique (58) est réalisé en un bloc indépendant susceptible d'être accolé au bloc contacteur (10) d'un contacteur standard, de manière que ledit percuteur (62) coopère avec un élément (72) conjugué de l'ensemble armature (34), porte-contact (28).2. Contactor according to claim 1, characterized in that said electrodynamic trip device (58) is produced in an independent block capable of being attached to the contactor block (10) of a standard contactor, so that said striker (62) cooperates with an element (72) conjugated with the armature assembly (34), contact carrier (28). 3. Contacteur selon la revendication 1 ou 2, caractérisé en ce que ladite armature (34) est maintenue en position attirée par alimentation de ladite bobine (38), un contact auxiliaire (44) d'auto-excitation s'ouvrant, lors du déplacement de l'ensemble armature, porte-contact en position d'ouverture pour interrompre ladite alimentation et confirmer l'ouverture.3. Contactor according to claim 1 or 2, characterized in that said armature (34) is held in the attracted position by supplying said coil (38), a contact auxiliary (44) self-excitation opening, during movement of the armature assembly, contact carrier in the open position to interrupt said supply and confirm the opening. 4. Contacteur selon la revendication 1 ou 2, caractérisé en ce que ladite armature (34) est maintenue en position attirée par rémanence.4. Contactor according to claim 1 or 2, characterized in that said armature (34) is maintained in the position attracted by remanence. 5. Contacteur selon l'une quelconque des revendications précédentes, caractérisé par le fait que ledit porte-contact (28) est monté à coulissement et porte un pont de contacts (22) coopérant avec une paire de contacts fixes (18, 20).5. Contactor according to any one of the preceding claims, characterized in that said contact carrier (28) is slidably mounted and carries a contact bridge (22) cooperating with a pair of fixed contacts (18, 20). 6. Contacteur selon l'une quelconque des revendications précédentes, comprenant une commande manuelle d'ouverture par suppression de la force d'attraction de l'armature et déplacement de l'ensemble armature, porte-contact par ledit dispositif de rappel en position d'ouverture, caractérisé en ce qu'il comporte un détecteur de courant (56) de court-circuit actionnant ledit déclencheur électrodynamique (58) pour ouvrir le contacteur indépendamment de ladite commande manuelle.6. Contactor according to any one of the preceding claims, comprising a manual opening control by removing the force of attraction of the armature and displacement of the armature assembly, contact carrier by said return device in position d opening, characterized in that it comprises a short-circuit current detector (56) actuating said electrodynamic trip device (58) to open the contactor independently of said manual control. 7. Contacteur multipolaire selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite armature (34), ledit porte-contact (28) et ledit déclencheur électrodynamique (58) sont communs aux différents pôles.7. Multipole contactor according to any one of the preceding claims, characterized in that said armature (34), said contact carrier (28) and said electrodynamic trip device (58) are common to the different poles. 8. Contacteur selon l'une quelconque des revendications précédentes, caractérisé par un organe de verrouillage (80) dudit ensemble armature (34, porte-contact (28.) pour verrouiller ledit ensemble en une position d'ouverture du contacteur assurant le sectionnement.8. Contactor according to any one of the preceding claims, characterized by a locking member (80) of said armature assembly (34, contact carrier (28.) for locking said assembly in an open position of the contactor ensuring cutting. 9. Contacteur selon la revendication 8, caractérisé en ce que ledit organe de verrouillage (80) coopère avec ledit percuteur (62) du déclencheur électrodynamique (58).9. Contactor according to claim 8, characterized in that said locking member (80) cooperates with said striker (62) of the electrodynamic trip device (58).
EP80400424A 1979-04-09 1980-03-31 Contactor with rapid opening in the event of a fault Expired EP0017575B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7909123 1979-04-09
FR7909123A FR2454174A1 (en) 1979-04-09 1979-04-09 CONTACTOR WITH FAST OPENING FAULT CONTROL

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EP0017575A1 true EP0017575A1 (en) 1980-10-15
EP0017575B1 EP0017575B1 (en) 1983-07-20
EP0017575B2 EP0017575B2 (en) 1989-09-06

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EP80400424A Expired EP0017575B2 (en) 1979-04-09 1980-03-31 Contactor with rapid opening in the event of a fault

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US (1) US4292611A (en)
EP (1) EP0017575B2 (en)
JP (1) JPS55157838A (en)
DE (1) DE3064197D1 (en)
FR (1) FR2454174A1 (en)

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Cited By (17)

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Publication number Priority date Publication date Assignee Title
EP0184566A1 (en) * 1984-10-12 1986-06-11 S.A. Acec Transport Extremely fast circuit breaker assisted by semiconductors
FR2595865A1 (en) * 1986-03-14 1987-09-18 Gen Electric ELECTRIC SWITCH, PARTICULARLY HIGH-SPEED CONTACT MAGNETIC ACTUATOR
US4920448A (en) * 1986-12-22 1990-04-24 Acec Transport S.A. Semiconductor-assisted ultra-fast contact breaker
FR2664426A1 (en) * 1990-02-14 1992-01-10 Mitsubishi Electric Corp SWITCH.
WO1997045851A1 (en) * 1996-05-24 1997-12-04 Asea Brown Boveri Ab Electric switching device
WO1997045850A1 (en) * 1996-05-24 1997-12-04 Asea Brown Boveri Ab Electric switching device
EP2339599A1 (en) * 2009-12-22 2011-06-29 ABB Research Ltd. A switch and use thereof
CN102947908A (en) * 2010-04-15 2013-02-27 施耐德电器工业公司 Electrical switching device having an ultrafast actuation mechanism and hybrid switch comprising such a device
WO2011128516A1 (en) * 2010-04-15 2011-10-20 Schneider Elect4Ic Industries Sas Electrical switching device having an ultrafast actuation mechanism and hybrid switch comprising such a device
US8686814B2 (en) 2010-04-15 2014-04-01 Schneider Electric Industries Sas Electric switching device with ultra-fast actuating mechanism and hybrid switch comprising one such device
CN102947908B (en) * 2010-04-15 2015-11-25 施耐德电器工业公司 With ultrafast actuation mechanism electrical switchgear and comprise the hybrid switch of this device
CN105493220A (en) * 2013-08-02 2016-04-13 松下知识产权经营株式会社 Electromagnetic relay
CN105493220B (en) * 2013-08-02 2017-10-27 松下知识产权经营株式会社 Electromagnetic relay
CN108231482A (en) * 2017-12-29 2018-06-29 合肥和旭继电科技有限公司 A kind of impact-resistant relay
CN108231482B (en) * 2017-12-29 2019-12-06 合肥和旭继电科技有限公司 impact-resistant relay
FR3076945A1 (en) * 2018-01-12 2019-07-19 Mersen France Sb Sas ELECTRICAL CONTACTOR AND SEMICONDUCTOR CUTTING DEVICE COMPRISING SUCH A CONTACTOR
CN113539751A (en) * 2021-06-02 2021-10-22 中汇瑞德电子（芜湖）有限公司 Contact monitoring device of high-voltage direct-current relay

Also Published As

Publication number Publication date
EP0017575B2 (en) 1989-09-06
FR2454174A1 (en) 1980-11-07
JPS55157838A (en) 1980-12-08
DE3064197D1 (en) 1983-08-25
US4292611A (en) 1981-09-29
FR2454174B1 (en) 1982-01-08
JPS6258095B2 (en) 1987-12-04
EP0017575B1 (en) 1983-07-20

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