EP0211707B1 - Electric circuit breaker contactor for capacitor batteries - Google Patents

Electric circuit breaker contactor for capacitor batteries Download PDF

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Publication number
EP0211707B1
EP0211707B1 EP86401392A EP86401392A EP0211707B1 EP 0211707 B1 EP0211707 B1 EP 0211707B1 EP 86401392 A EP86401392 A EP 86401392A EP 86401392 A EP86401392 A EP 86401392A EP 0211707 B1 EP0211707 B1 EP 0211707B1
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EP
European Patent Office
Prior art keywords
pair
circuit breaker
contacts
solid
state switch
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
EP86401392A
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German (de)
French (fr)
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EP0211707A1 (en
Inventor
Jean Boisdon
Jean-Luc Mertz
François Dieppedalle
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
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Merlin Gerin SA
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Publication of EP0211707A1 publication Critical patent/EP0211707A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/541—Contacts shunted by semiconductor devices
    • H01H9/542—Contacts shunted by static switch means
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
    • H01H9/465—Shunt circuit closed by transferring the arc onto an auxiliary electrode

Definitions

  • the invention relates to an alternating current circuit breaker-contactor, according to the preamble of claim 1.
  • the document EP-A 0 104 981 describes a circuit breaker-contactor, in which the diversion of the current in the shunting circuit, by switching the arc on the arc electrode, puts the static switch off.
  • Such a circuit breaker-contactor cannot be used for interlocking by capacitor steps, which causes overvoltages and overcurrents causing nuisance tripping.
  • the document FR-A 1 590 945 relates to a device for connecting capacitors making use of static switches which are struck at zero of the potential difference between the alternating current source and the capacitor. Static switches can be shunted by mechanical contacts to limit losses. This device is unable to control short circuits and overloads and contact wear is inevitable.
  • the object of the present invention is to produce a high endurance circuit breaker-contactor ensuring total protection and this object is achieved by implementing the characteristics of claim 1.
  • the static switch in particular the triac, allows synchronization of the closing of the circuit, avoiding or limiting current spikes, but it has the disadvantage of a significant voltage drop and a high sensitivity to short circuits. .
  • the voltage drop is the cause of a significant heating and according to the invention, the triac is shunted in normal operation by the mechanical contacts of the contactor.
  • the static switch only intervenes for a short time when the circuit breaker-contactor closes and possibly when it opens.
  • the circuit breaker-contactor according to the invention comprises a shunting circuit which intervenes by switching the arc on an arc electrode, as soon as the contacts of the. circuit breaker part.
  • the shunt circuit diverts the current and protects the capacitors and the line against overloads and short circuits, as well as the protection of the static switch and the contacts of the contactor part against short circuits.
  • the contacts of the contactor part are protected against current peaks by the static switch which closes before the mechanical contacts and opens after the latter.
  • the static switch is suitable for an opening command synchronized with the zero crossing of the current.
  • the circuit breaker-contactor is advantageously of the type with a narrow or miniature molded case, all of the constituent elements being housed in the same case or according to a preferred embodiment in separate cases allowing modular assembly.
  • the static switch the dimensions of which are relatively small, is advantageously incorporated either in the casing of the circuit breaker part or in that of the contactor, so as to limit the electrical connections.
  • the circuit breaker includes a thermal trip device and an electromagnetic trip device, which can optionally be replaced by electronic trip devices well known to specialists.
  • a reset and / or manual control lever allows the opening and closing of the circuit breaker contacts to ensure circuit isolation.
  • the contactor preferably comprises a contact bridge actuated in the closed position, when an electromagnet is excited and returned to the open position by a return spring, during the de-excitation of this electromagnet.
  • the contactor can also be of the pulse control type, each pulse causing a change of state in the manner of the remote control switches.
  • FIG. 1 corresponds to that of document EP-A 0 104 981 to which reference will advantageously be made for further details on the operation of the circuit breaker and static switch combination.
  • FIG. 1 we recognize a miniature molded housing 12, containing the circuit breaker part designated by the general reference 10.
  • the housing 12 has at its rear face 14 a fixing latch 16 and at its front part 18 a control lever 20 d a mechanism 30.
  • a pair of fixed and movable contact 22 22 are arranged opposite a breaking chamber 26 with deionization plates 28.
  • the end plates of the chamber 26 are extended in the direction of the contacts 22, 24, to form arcing horns 39, 41.
  • the movable contact 24 is integral with a contact arm 42, pivotally mounted on a rocker arm 44, actuated by a toggle 46, articulated on the lever 20.
  • a trigger lever 48 pivotally mounted on an axis 50 cooperates, on the one hand with the contact arm 42 and on the other hand with a latch 52, capable of being actuated by a bimetallic strip 34 and / or an electromagnetic trip device 36.
  • the electrical circuit comprises an input terminal 38 and an output terminal 40 between which are successively connected in series the bimetallic strip 34, the coil of the electromagnetic trip device 36, the contacts 22, 24, and a static switch 56.
  • the static switch 56 is, for example, a triac or a pair of thyristors mounted head to tail including electro of ignition is connected to a terminal 57 of the housing 12, receiving a control wire 58.
  • the arcing horn or electrode 39 extends to near the fixed contact 22, leaving a small gap 65 remaining.
  • the arcing horn 39 is connected by a conductor 62 to a point 64, disposed between the switch static 56 and terminal 40.
  • this circuit breaker-static switch part is apparent from the preceding description and from the aforementioned French patent application.
  • the contacts 22, 24 are closed, the static switch ensuring the opening and closing of the circuit in the manner of a remote-controlled contactor. Protection is provided by the circuit breaker, the triggers 34, 36 of which cause the contacts 22, 24 to open in the event of an overload or short-circuit.
  • the arc drawn between these contacts switches to the electrode 39 by closing the shunting circuit 62, to divert the current passing through the static switch 56.
  • This bypass protects the triac or the thyristors of this static switch. After extinction of the arc in the breaking chamber 26, the circuit is interrupted.
  • the circuit breaker housing 12 is joined a contactor housing 66 of the same profile, containing a pair of fixed contacts 68, 70, cooperating with a contact bridge 72.
  • contact bridge 72 is integral with an armature 74, controlled by an electromagnet 76.
  • electromagnet 76 When the electromagnet 76 is supplied by a conductor 78, the armature 74 is attracted and the contact bridge 72 closed.
  • a return spring 80 biases the contact bridge 72 in the open position, as soon as the supply to the electromagnet 76 is interrupted.
  • the fixed contact 70 is connected by a connection to one of the terminals of the static switch 56, while the opposite fixed contact 68 is connected to the other terminal, for example at point 64 of the static switch 56.
  • the conductor 78 is connected to control block 60, which receives, on the other hand, a control signal delivered by a detector 80 and an external control signal 82.
  • FIG. 5 illustrates an alternative embodiment, in which the arc electrode 41 is associated with the movable contact 24, so as to pick up the arc anchored on this movable contact 24.
  • the static switch 56 is, in this case, interposed between the movable contact 24 and the terminal 38 associated with the latter contact.
  • the mechanical contacts 68, 70, 72 are connected in the manner described above to the terminals of the switch 56, the control block 60 controlling the static switch 56 and the electromagnet 76 in an identical manner. the contactor part.
  • the operation remains of course identical to that described above, the circuit breaker ensuring all of the protection, as soon as the arc is switched on the electrode 41 ..
  • the modular system has the advantage of allowing the use of standard elements, for example of a contactor element 66 or remote control switch, comprising an appropriate electrical connection system.
  • the static switch has been incorporated in the housing 12 of the circuit breaker part, but it is clear that this switch can be incorporated in a separate housing or possibly in the housing 66 of the contactor part.
  • the control block 60 can be an independent part, possibly remote from the circuit breaker-contactor or be incorporated in one of the boxes.

Landscapes

  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Description

L'invention est relative à un disjoncteur-contacteur de courant alternatif, selon le préambule de la revendication 1.The invention relates to an alternating current circuit breaker-contactor, according to the preamble of claim 1.

Le document EP-A 0 104 981 décrit un disjoncteur-contacteur, dans lequel la dérivation du courant dans le circuit de shuntage, par la commutation de l'arc sur l'électrode d'arc, met l'interrupteur statique hors-circuit. Un tel disjoncteur-contacteur ne peut être utilisé pour l'enclenchement par gradins de condensateurs, qui provoque des surtensions et des surintensités engendrant des déclenchements intempestifs.The document EP-A 0 104 981 describes a circuit breaker-contactor, in which the diversion of the current in the shunting circuit, by switching the arc on the arc electrode, puts the static switch off. Such a circuit breaker-contactor cannot be used for interlocking by capacitor steps, which causes overvoltages and overcurrents causing nuisance tripping.

Le document FR-A 1 590 945 est relatif à un dispositif de branchement de condensateurs faisant usage d'interrupteurs statiques qui sont amorcés au zéro de la différence de potentiel entre la source de courant alternatif et le condensateur. Les interrupteurs statiques peuvent être shuntés par des contacts mécaniques pour limiter les pertes. Ce dispositif est incapable de maîtriser les courts circuits et surcharges et une usure des contacts est inévitable.The document FR-A 1 590 945 relates to a device for connecting capacitors making use of static switches which are struck at zero of the potential difference between the alternating current source and the capacitor. Static switches can be shunted by mechanical contacts to limit losses. This device is unable to control short circuits and overloads and contact wear is inevitable.

La présente invention a pour but de réaliser un disjoncteur-contacteur à haute endurance assurant une protection totale et ce but est réalisé par la mise en oeuvre des caractéristiques de la revendication 1.The object of the present invention is to produce a high endurance circuit breaker-contactor ensuring total protection and this object is achieved by implementing the characteristics of claim 1.

L'interrupteur statique, notamment le triac, permet une synchronisation de la fermeture du circuit, évitant ou limitant les pointes de courant, mais il présente l'inconvénient d'une chute de tension non négligeable et d'une grande sensibilité aux court-circuits. La chute de tension est à l'origine d'un échauffement non négligeable et selon l'invention, le triac est shunté en fonctionnement normal par les contacts mécaniques du contacteur. L'interrupteur statique intervient uniquement pendant une courte durée au moment de la fermeture du disjoncteur-contacteur et éventuellement au moment de l'ouverture. En cas de défaut ou de court-circuit, le disjoncteur-contacteur selon l'invention comporte un circuit de shuntage qui intervient par commutation de l'arc sur une électrode d'arc, dès l'ouverture des contacts de la. partie disjoncteur. Le circuit de shuntage dérive le courant et assure la protection des condensateurs et de la ligne contre les surcharges et les courts-circuits, ainsi que la protection de l'interrupteur statique et des contacts de la partie contacteur contre les courts-circuits. Les contacts de la partie contacteur sont protégés contre les pointes de courant par l'interrupteur statique qui se ferme avant les contacts mécaniques et s'ouvre après ces derniers. L'interrupteur statique se prête à une commande d'ouverture synchronisée au passage au zéro du courant.The static switch, in particular the triac, allows synchronization of the closing of the circuit, avoiding or limiting current spikes, but it has the disadvantage of a significant voltage drop and a high sensitivity to short circuits. . The voltage drop is the cause of a significant heating and according to the invention, the triac is shunted in normal operation by the mechanical contacts of the contactor. The static switch only intervenes for a short time when the circuit breaker-contactor closes and possibly when it opens. In the event of a fault or short-circuit, the circuit breaker-contactor according to the invention comprises a shunting circuit which intervenes by switching the arc on an arc electrode, as soon as the contacts of the. circuit breaker part. The shunt circuit diverts the current and protects the capacitors and the line against overloads and short circuits, as well as the protection of the static switch and the contacts of the contactor part against short circuits. The contacts of the contactor part are protected against current peaks by the static switch which closes before the mechanical contacts and opens after the latter. The static switch is suitable for an opening command synchronized with the zero crossing of the current.

Le disjoncteur-contacteur est avantageusement du type à boîtier moulé étroit ou miniature, l'ensemble des éléments constitutifs étant logé dans un même boîtier ou selon un mode de mise en oeuvre préférentiel dans des boîtiers séparés permettant un assemblage modulaire. L'interrupteur statique, dont les dimensions sont relativement faibles, est avantageusement incorporé, soit dans le boîtier de la partie disjoncteur, soit dans celle du contacteur, de manière à limiter les connexions électriques. Le disjoncteur comprend un déclencheur thermique et un déclencheur électromagnétique, qui peuvent être éventuellement remplacés par des déclencheurs électroniques bien connus des spécialistes. Une manette de réarmement et/ou de commande manuelle permet l'ouverture et la fermeture des contacts du disjoncteur pour assurer un sectionnement du circuit. Le contacteur comporte de préférence un pont de contact actionné en position de fermeture, lors de l'excitation d'un électro-aimant et rappelé en position d'ouverture par un ressort de rappel, lors de la désexcitation de cet électro-aimant. Le contacteur peut être également du type à commande par impulsion, chaque impulsion provoquant un changement d'état à la manière des télérupteurs.The circuit breaker-contactor is advantageously of the type with a narrow or miniature molded case, all of the constituent elements being housed in the same case or according to a preferred embodiment in separate cases allowing modular assembly. The static switch, the dimensions of which are relatively small, is advantageously incorporated either in the casing of the circuit breaker part or in that of the contactor, so as to limit the electrical connections. The circuit breaker includes a thermal trip device and an electromagnetic trip device, which can optionally be replaced by electronic trip devices well known to specialists. A reset and / or manual control lever allows the opening and closing of the circuit breaker contacts to ensure circuit isolation. The contactor preferably comprises a contact bridge actuated in the closed position, when an electromagnet is excited and returned to the open position by a return spring, during the de-excitation of this electromagnet. The contactor can also be of the pulse control type, each pulse causing a change of state in the manner of the remote control switches.

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:

  • - la figure 1 est une vue en élévation et en coupe axiale de la partie disjoncteur du disjoncteur-contacteur selon l'invention;
  • - la figure 2 est une vue analogue à celle de la figure 1, illustrant la partie contacteur;
  • - la figure 3 est une vue schématique en perspective des parties contacteurs et disjoncteurs assemblées;
  • . - les figures 4 et 5 montrent les schémas unipolaires de deux variantes de réalisation selon l'invention.
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 represented in the appended drawings, in which:
  • - Figure 1 is an elevational view in axial section of the circuit breaker part of the circuit breaker-contactor according to the invention;
  • - Figure 2 is a view similar to that of Figure 1, illustrating the contactor part;
  • - Figure 3 is a schematic perspective view of the contactor and circuit breaker parts assembled;
  • . - Figures 4 and 5 show the unipolar diagrams of two alternative embodiments according to the invention.

La figure 1 correspond à celle du document EP-A 0 104 981 à laquelle on se refèrera avantageusement pour de plus amples détails sur le fonctionnement de la combinaison disjoncteur, interrupteur statique.FIG. 1 corresponds to that of document EP-A 0 104 981 to which reference will advantageously be made for further details on the operation of the circuit breaker and static switch combination.

Sur la figure 1, on reconnait un boîtier moulé miniature 12, contenant la partie disjoncteur désignée par le repère général 10. Le boîtier 12 comporte à sa face arrière 14 un verrou de fixation 16 et à sa partie avant 18 une manette de commande 20 d'un mécanisme 30. Une paire de contact fixe 22 et mobile 24 sont disposés en regard d'une chambre de coupure 26 à tôles de désionisation 28. Les tôles d'extrémité de la chambre 26 sont prolongées en direction des contacts 22, 24, pour former des cornes d'arc 39, 41. Le contact mobile 24 est solidaire d'un bras de contact 42, monté à pivotement sur un culbuteur 44, actionné par une genouillère 46, articulée sur la manette 20. Un levier de déclenchement 48 monté à pivotement sur un axe 50 coopère, d'une part avec le bras de contact 42 et d'autre part avec un verrou 52, susceptible d'être actionné par une bilame 34 et/ou un déclencheur électromagnétique 36. Le circuit électrique comporte une borne d'entrée 38 et une borne de sortie 40 entre lesquelles sont connectés successivement en série la bilame 34, la bobine du déclencheur électromagnétique 36, les contacts 22, 24, et un interrupteur statique 56. L'interrupteur statique 56 est, par exemple, un triac ou une paire de thyristors montés tête-bêche dont l'électrode d'amorçage est reliée à une borne 57 du boîtier 12, recevant un fil de commande 58.In Figure 1, we recognize a miniature molded housing 12, containing the circuit breaker part designated by the general reference 10. The housing 12 has at its rear face 14 a fixing latch 16 and at its front part 18 a control lever 20 d a mechanism 30. A pair of fixed and movable contact 22 22 are arranged opposite a breaking chamber 26 with deionization plates 28. The end plates of the chamber 26 are extended in the direction of the contacts 22, 24, to form arcing horns 39, 41. The movable contact 24 is integral with a contact arm 42, pivotally mounted on a rocker arm 44, actuated by a toggle 46, articulated on the lever 20. A trigger lever 48 pivotally mounted on an axis 50 cooperates, on the one hand with the contact arm 42 and on the other hand with a latch 52, capable of being actuated by a bimetallic strip 34 and / or an electromagnetic trip device 36. The electrical circuit comprises an input terminal 38 and an output terminal 40 between which are successively connected in series the bimetallic strip 34, the coil of the electromagnetic trip device 36, the contacts 22, 24, and a static switch 56. The static switch 56 is, for example, a triac or a pair of thyristors mounted head to tail including electro of ignition is connected to a terminal 57 of the housing 12, receiving a control wire 58.

La corne d'arc ou électrode 39 s'étend jusqu'à proximité du contact fixe 22, en laissant subsister un faible intervalle 65. La corne d'arc 39 est reliée par un conducteur 62 à un point 64, disposé entre l'interrupteur statique 56 et la borne 40.The arcing horn or electrode 39 extends to near the fixed contact 22, leaving a small gap 65 remaining. The arcing horn 39 is connected by a conductor 62 to a point 64, disposed between the switch static 56 and terminal 40.

Le fonctionnement de cette partie disjoncteur- interrupteur statique ressort de l'exposé précédent et de la demande de brevet français précitée. En fonctionnement normal, les contacts 22, 24, sont fermés, l'interrupteur statique assurant l'ouverture et la fermeture du circuit à la manière d'un contacteur télécommandé. La protection est assurée par le disjoncteur dont les déclencheurs 34, 36, provoquent l'ouverture des contacts 22, 24 en cas de surcharge ou de court-circuit. Dés la séparation des contacts 22, 24, l'arc tiré entre ces contacts commute sur l'électrode 39 en fermant le circuit de shuntage 62, pour dériver le courant passant par l'interrupteur statique 56. Cette dérivation protège le triac ou les thyristors de cet interrupteur statique. Après extinction de l'arc dans la chambre de coupure 26, le circuit est interrompu.The operation of this circuit breaker-static switch part is apparent from the preceding description and from the aforementioned French patent application. In normal operation, the contacts 22, 24 are closed, the static switch ensuring the opening and closing of the circuit in the manner of a remote-controlled contactor. Protection is provided by the circuit breaker, the triggers 34, 36 of which cause the contacts 22, 24 to open in the event of an overload or short-circuit. As soon as the contacts 22, 24 are separated, the arc drawn between these contacts switches to the electrode 39 by closing the shunting circuit 62, to divert the current passing through the static switch 56. This bypass protects the triac or the thyristors of this static switch. After extinction of the arc in the breaking chamber 26, the circuit is interrupted.

En se référant plus particulièrement aux figures 2 et 3, on voit qu'au boîtier-disjoncteur 12 est accolé un boîtier-contacteur 66 de même profil, contenant une paire de contacts fixes 68, 70, coopérant avec un pont de contact 72. Le pont de contact 72 est solidaire d'une armature 74, commandée par un électro-aimant 76. Lorsque l'électro-aimant 76 est alimenté par un conducteur 78, l'armature 74 est attirée et le pont de contact 72 fermé. Un ressort de rappel 80 sollicite le pont de contact 72 en position d'ouverture, dés que l'alimentation de l'électro-aimant 76 est interrompue. Le contact fixe 70 est relié par une connexion à l'une des bornes de l'interrupteur statique 56, tandis que le contact fixe opposé 68 est relié à l'autre borne, par exemple au point 64 de l'interrupteur statique 56. Le conducteur 78 est relié au bloc de commande 60, qui reçoit, d'autre part, un signal de commande délivré par un détecteur 80 et un signal de commande extérieur 82.Referring more particularly to FIGS. 2 and 3, it can be seen that the circuit breaker housing 12 is joined a contactor housing 66 of the same profile, containing a pair of fixed contacts 68, 70, cooperating with a contact bridge 72. contact bridge 72 is integral with an armature 74, controlled by an electromagnet 76. When the electromagnet 76 is supplied by a conductor 78, the armature 74 is attracted and the contact bridge 72 closed. A return spring 80 biases the contact bridge 72 in the open position, as soon as the supply to the electromagnet 76 is interrupted. The fixed contact 70 is connected by a connection to one of the terminals of the static switch 56, while the opposite fixed contact 68 is connected to the other terminal, for example at point 64 of the static switch 56. The conductor 78 is connected to control block 60, which receives, on the other hand, a control signal delivered by a detector 80 and an external control signal 82.

Le disjoncteur-contacteur selon l'invention fonctionne de la manière suivante:

  • - les contacts 22, 24, de la partie disjoncteur sont normalement fermés. Un ordre de fermeture du disjoncteur-contacteur selon l'invention est envoyé par le conducteur 82 au bloc de commande 60. Ce dernier reçoit du détecteur 80 les informations relatives au courant alternatif pour émettre sur la ga- chette ou l'électrode de commande 58 de l'interrupteur 56 un ordre de conduction au passage à zéro de la différence de potentiel entre le réseau et la capacité.
The circuit breaker-contactor according to the invention operates as follows:
  • - the contacts 22, 24, of the circuit breaker part are normally closed. An order to close the circuit breaker-contactor according to the invention is sent by the conductor 82 to the control unit 60. The latter receives from the detector 80 the information relating to the alternating current in order to transmit on the trigger or the control electrode 58 of the switch 56 a conduction order for the zero crossing of the potential difference between the network and the capacity.

Le bloc de commande 60 envoie, d'autre part, dès la fermeture de l'interrupteur statique 56 un ordre de fermeture des contacts 68, 70, 72 de la partie contacteur. Dès la fermeture de ces contacts mécaniques 68, 70, 72, l'interrupteur statique 56 est shunté et la quasi totalité du courant passe par les contacts mécaniques 68, 70, 72 qui ont une résistance électrique inférieure. On évite ainsi un échauffement de l'interrupteur statique 56. Un ordre d'ouverture transmis par le conducteur 82 au bloc de commande 60 provoque d'une manière analogue, en un premier temps une ouverture des contacts mécaniques 68, 70, 72, et par la suite au passage au zéro du courant une ouverture de l'interrupteur statique 56. Il est facile de voir que les contacts mécaniques 68, 70, 72, assurent la conduction du courant, tandis que l'interrupteur statique 56 assure l'établissement et l'interruption du courant.

  • - en cas de court-circuit, détecté par le déclencheur 34, 36 de la partie disjoncteur, le contact mobile 24 se déplace rapidement en tirant un arc entre les contacts 22, 24. La racine de l'arc ancrée sur le contact fixe 22 commute rapidement sur l'électrode d'arc 39, autorisant le passage du courant par le conducteur de shuntage 62. On voit que la dérivation du courant par le conducteur de shuntage 62 protège à la fois l'interrupteur statique 56 et les contacts 68, 70, 72. Le disjoncteur protège, de plus, le circuit connecté en aval, notamment le condensateur (non représenté). La refermeture du disjoncteur par la manette 20 permet une remise en état du disjoncteur-contacteur pour une nouvelle opération de fermeture.
The control block 60 sends, on the other hand, as soon as the static switch 56 is closed, an order to close the contacts 68, 70, 72 of the contactor part. As soon as these mechanical contacts 68, 70, 72 are closed, the static switch 56 is bypassed and almost all of the current flows through the mechanical contacts 68, 70, 72 which have a lower electrical resistance. This avoids overheating of the static switch 56. An opening order transmitted by the conductor 82 to the control unit 60 similarly causes, at first, an opening of the mechanical contacts 68, 70, 72, and thereafter when the current goes to zero an opening of the static switch 56. It is easy to see that the mechanical contacts 68, 70, 72 ensure the conduction of the current, while the static switch 56 ensures the establishment and the interruption of the current.
  • - In the event of a short circuit, detected by the trip unit 34, 36 of the circuit breaker part, the movable contact 24 moves quickly by drawing an arc between the contacts 22, 24. The root of the arc anchored on the fixed contact 22 quickly switches to the arc electrode 39, authorizing the passage of current by the shunt conductor 62. It can be seen that the current bypass by the shunt conductor 62 protects both the static switch 56 and the contacts 68, 70, 72. The circuit breaker also protects the circuit connected downstream, in particular the capacitor (not shown). The reclosing of the circuit breaker by the lever 20 allows a reconditioning of the circuit breaker-contactor for a new closing operation.

La figure 5 illustre une variante de réalisation, dans laquelle l'électrode d'arc 41 est associée au contact mobile 24, de manière à capter l'arc ancré sur ce contact mobile 24. L'interrupteur statique 56 est, dans ce cas, intercalé entre le contact mobile 24 et la borne 38 associée à ce dernier contact. Les contacts mécaniques 68, 70, 72, sont raccordés de là manière décrite ci-dessus aux bornes de l'interrupteur 56, le bloc de commande 60 commandant d'une manière identique l'interrupteur statique 56 et l'électro-aimant 76 de la partie contacteur. Le fonctionnement reste bien entendu identique à celui décrit ci-dessus, le disjoncteur assurant l'ensemble de la protection, dés la commutation de l'arc sur l'électrode 41..FIG. 5 illustrates an alternative embodiment, in which the arc electrode 41 is associated with the movable contact 24, so as to pick up the arc anchored on this movable contact 24. The static switch 56 is, in this case, interposed between the movable contact 24 and the terminal 38 associated with the latter contact. The mechanical contacts 68, 70, 72 are connected in the manner described above to the terminals of the switch 56, the control block 60 controlling the static switch 56 and the electromagnet 76 in an identical manner. the contactor part. The operation remains of course identical to that described above, the circuit breaker ensuring all of the protection, as soon as the arc is switched on the electrode 41 ..

Il est clair que l'ensemble des éléments peut être incorporé dans un boîtier unique dont le profil peut être différent. Le système modulaire présente l'avantage de permettre l'utilisation d'elements standard, par exemple d'un élément contacteur 66 ou té- lérupteur, comprenant un système de connexion électrique approprié. L'interrupteur statique a été incorporé dans le boîtier 12 de la partie disjoncteur, mais il est clair que cet interrupteur peut être incorporé à un boîtier séparé ou éventuellement au boîtier 66 de la partie contacteur. De même, le bloc de commande 60 peut être une partie indépendante, éventuellement éloignée du disjoncteur-contacteur ou être incorporée à l'un des boîtiers.It is clear that all of the elements can be incorporated in a single housing whose profile may be different. The modular system has the advantage of allowing the use of standard elements, for example of a contactor element 66 or remote control switch, comprising an appropriate electrical connection system. The static switch has been incorporated in the housing 12 of the circuit breaker part, but it is clear that this switch can be incorporated in a separate housing or possibly in the housing 66 of the contactor part. Likewise, the control block 60 can be an independent part, possibly remote from the circuit breaker-contactor or be incorporated in one of the boxes.

Claims (10)

1. An alternating current circuit breaker-contactor, notably connecting capacitor banks, comprising per pole a second pair (22, 24) of mechanical contacts, electrically connected in series with a solid-state switch (56), notably a triac or thyristor;
- an automatic tripping mechanism (30) on a fault opening said second pair (22, 24) of mechanical contacts;
- at least one arcing electrode (39, 41) located in proximity to one (22, 24) of the contacts of said second pair to catch the arc drawn when the contacts of said second pair separate, said arcing electrode (39, 41) belonging to a shunt circuit of said second pair (22, 24) of contacts and of said solid-state switch (56) to draw off the current flowing through said second pair of contacts to the shunt circuit as soon as the arc is switched onto said electrode, characterized in that it comprises further a first pair (68, 72) of contacts connected in parallel with said solid-state switch (56) and in series with said second pair (22, 24) of mechanical contacts and likely to be shunted by said shunt circuit as soon as the arc is switched onto said electrode (39, 41);
- a remote control electromagnet (76) for opening and closing said first pair of mechanical contacts (68, 72);
- and a zero current detector (80) which controls triggering of said solid-state switch (56) when the potential difference between the alternating current source and a capacitor bank reaches zero, on a closing order of said first pair (68, 72) of mechanical contacts with a time lag such that current making is always performed by the solid-state switch (56).
2. A circuit breaker-contactor according to claim 1, characterized in that said detector (80) controls breaking of the solid-state switch (56) when the current passes zero, on an opening order, after opening of said first pair (68, 72) of mechanical contacts.
3. A circuit breaker-contactor according to claim 1 or 2, characterized in that a control device (60) receives the synchronization signal sent by said detector (80) and a remote control signal (82) and sends a control order of said electromagnet (76) and a control order of said solid-state switch (56).
4. A circuit breaker-contactor according to claim 3, characterized in that said control device (60) comprises a time delay device to delay closing of said first pair (68, 72) of mechanical contacts in relation to that of said solid-state switch and to delay opening of the solid-state switch in relation to that of said first pair of contacts.
5. A circuit breaker-contactor according to claim 1, 2, 3 or 4, characterized in that said tripping mechanism (30) comprises an instantaneous trip release (36) notably electromagnetic, for high-speed opening of said second pair (22, 24) of mechanical contacts in the event of a short-circuit.
6. A circuit breaker-contactor according to claim 5, characterized in that said tripping mechanism (30) comprises a manual closing, opening and/or reset control handle (20).
7. A circuit breaker-contactor according to any one of the above claims, characterized in that said first pair (68, 72) of mechanical contacts is housed in a first narrow molded case (66), containing the control electromagnet (76), and that said second pair (22, 24) of mechanical contacts is housed in a second narrow molded case (12), adjoined to the first case.
8. A circuit breaker-contactor according to any one of the above claims, characterized in that said arcing electrode (39) is located in proximity to the fixed contact (22) of said second pair to catch the arc root anchored on said fixed contact and said first pair (68, 72) of mechanical contacts and the solid-state switch (56) are connected between said fixed contact (22) and the associated terminal (40).
9. A circuit breaker-contactor according to any one of the above claims, characterized in that said arcing electrode (41) is located in proximity to the moving contact (24) of said second pair and that said first pair (68, 72) of mechanical contacts and the solid-state switch (56) are connected between said moving contact (24) and the associated terminal (38).
10. A circuit breaker-contactor according to any one of the above claims, characterized in that it comprises a varmetric relay controlling making of the capacitor banks, causing opening or closing of said first pair (68, 72) of mechanical contacts in conjunction with the solid-state switch (56).
EP86401392A 1985-07-04 1986-06-25 Electric circuit breaker contactor for capacitor batteries Expired - Lifetime EP0211707B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8510394A FR2584529B1 (en) 1985-07-04 1985-07-04 ELECTRIC CIRCUIT BREAKER, PARTICULARLY FOR CAPACITOR BATTERIES
FR8510394 1985-07-04

Publications (2)

Publication Number Publication Date
EP0211707A1 EP0211707A1 (en) 1987-02-25
EP0211707B1 true EP0211707B1 (en) 1990-06-13

Family

ID=9321057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401392A Expired - Lifetime EP0211707B1 (en) 1985-07-04 1986-06-25 Electric circuit breaker contactor for capacitor batteries

Country Status (5)

Country Link
US (1) US4725911A (en)
EP (1) EP0211707B1 (en)
JP (1) JPH0746552B2 (en)
DE (1) DE3672020D1 (en)
FR (1) FR2584529B1 (en)

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FR2707437B1 (en) * 1993-07-05 1995-08-11 Telemecanique Protection and control device for electric charge.
FR2711270B1 (en) * 1993-10-15 1995-11-24 Merlin Gerin Electrical protection equipment with circuit breaker and effector.
FR2711271B1 (en) * 1993-10-15 1995-12-22 Merlin Gerin Protective equipment formed by the association of a circuit breaker in series with an effector.
FR2714520B1 (en) * 1993-12-24 1996-01-19 Telemecanique Electric switch device with separable contacts.
FR2742916B1 (en) * 1995-12-21 1998-01-16 Schneider Electric Sa ARC SWITCHED ELECTRICAL DEVICE
FR2748612B1 (en) * 1996-05-10 1998-06-19 Schneider Electric Sa CIRCUIT FOR THE PROTECTED POWER SUPPLY OF AN ELECTRIC CHARGE
AUPQ672300A0 (en) * 2000-04-05 2000-05-04 Nu-Lec Industries Pty Limited Isolating circuit breaker and circuit protection arrangement
CN201004435Y (en) * 2006-08-25 2008-01-09 百利通电子(上海)有限公司 AC relay
JP4844372B2 (en) * 2006-12-04 2011-12-28 パナソニック株式会社 Switch device and remote control transmitter using the same
JP4910666B2 (en) * 2006-12-04 2012-04-04 パナソニック株式会社 Switch device and remote control transmitter using the same
US8619395B2 (en) 2010-03-12 2013-12-31 Arc Suppression Technologies, Llc Two terminal arc suppressor
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Also Published As

Publication number Publication date
EP0211707A1 (en) 1987-02-25
FR2584529B1 (en) 1995-01-06
JPH0746552B2 (en) 1995-05-17
JPS6286619A (en) 1987-04-21
US4725911A (en) 1988-02-16
DE3672020D1 (en) 1990-07-19
FR2584529A1 (en) 1987-01-09

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