EP0310469A1 - Protective switch with a screen for cutting the arc - Google Patents

Protective switch with a screen for cutting the arc Download PDF

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Publication number
EP0310469A1
EP0310469A1 EP88402235A EP88402235A EP0310469A1 EP 0310469 A1 EP0310469 A1 EP 0310469A1 EP 88402235 A EP88402235 A EP 88402235A EP 88402235 A EP88402235 A EP 88402235A EP 0310469 A1 EP0310469 A1 EP 0310469A1
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EP
European Patent Office
Prior art keywords
screen
contacts
rocker
contact
opening
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
EP88402235A
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German (de)
French (fr)
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EP0310469B1 (en
Inventor
André Cheurlin
Patrick Comtois
Jean-Christophe Deschamps
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Telemecanique SA
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Telemecanique Electrique SA
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Application filed by Telemecanique Electrique SA filed Critical Telemecanique Electrique SA
Publication of EP0310469A1 publication Critical patent/EP0310469A1/en
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Publication of EP0310469B1 publication Critical patent/EP0310469B1/en
Anticipated expiration legal-status Critical
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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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/32—Insulating body insertable between contacts

Definitions

  • the present invention relates to a single-pole or multi-pole protective electrical switch device enabling a power cut following an automatic triggering in the event of a short-circuit overcurrent or an opening by manual control and comprising in a housing: - at least one fixed contact and one mobile contact, - a movable arm carrying the movable contact and resiliently biased in the direction of closing the contacts, a triggering member actuating in response to a short-circuit overcurrent, an automatic triggering lock cooperating with the contact-carrying arm to cause the latter to move in the direction of opening of the contacts, - a movable arc cut-out screen occupying a rest position towards which it is returned by a spring and being driven by the triggering member in response to a short-circuit overcurrent to interpose between the contacts, - A manual control member connected to a drive member cooperating with the contact carrier arm to drive by movement of the control member a movement of the arm in the direction of opening of the contacts.
  • Such a switch device known as an arc cut-off screen is described in patent FR-2 577 712.
  • This device is a circuit breaker, the role of which is to electrically isolate and protect a feeder assembly against short-circuits. motor (contactor, thermal relay).
  • the arc cut-off screen is not requested by the automatic tripping device on short-circuit only from the trip threshold thereof and therefore only participates in the cut-out in the event of a short-circuit.
  • the object of the present invention is in particular to request the same arc cut-off screen both during automatic triggering at high overcurrents, that is to say for short-circuit currents, as during opening by manual control at low currents, i.e. both for overload currents and for currents of value less than or equal to that of the rated current of the device.
  • Another purpose is to prevent, during manual opening, the unlocking of the mechanical lock of the device, which advantageously makes it possible to dispense with the rearming thereof following manual opening.
  • a protective switch device of the type described above is more particularly charac terized in that it comprises a screen drive member in the event of manual opening, subject to the manual control member and connected to the screen to drive the latter against its spring reminder during manual opening, so that the screen is interposed between the contacts.
  • the proposed solution thus makes it possible to benefit from the action of the screen thanks to a simple mechanical connection between the manual control member and the screen, in order to promote cutting during manual opening.
  • the screen drive member in the event of manual opening is constituted by a projecting finger which is formed on a movable rocker driven by the manual control member and which cooperates during manual opening with a shoulder provided on the screen.
  • said shoulder is preferably formed on the periphery of the screen.
  • an intensity threshold switching device designated by the general reference 10
  • a housing 11 in which are housed at least one fixed contact 12 and a movable contact 13 carried by a contact arm 14 which is pivotally mounted on a bearing 15 of axis A1 in the housing 11 and is biased in the closing direction contacts by a not shown return spring.
  • the fixed contact 12 is connected to an input terminal 16 via an electrical connection 17 comprising a coil 18 belonging to an electromagnet which constitutes the automatic short-circuit tripping member 19 of the device in question, while the movable contact 13 is connected by a conductive link 20 to an output terminal 22.
  • a magnetic core 24 shaped as a plunger which is capable of actuating in the attracted position following a short circuit a trip lock shown diagrammatically in 25 acting on the contact carrying arm 14 in the opening direction of the contacts (figure 2).
  • the rotary screen 27 is directly hung on a tail 29 of the plunger core 24 and can be propelled by the latter against a return spring shown diagrammatically at 30 under the action of the plunger core during a short circuit.
  • a manual control button 32 located outside the housing 11 cooperates with a control rocker 33 of the contact carrier arm; the button is pivotally mounted around an axis A2 perpendicular to the axis A1, while the rocker is pivotally mounted on a bearing 34 of axis A3 parallel to the axis A1.
  • a mechanical link suitable for engagement and / or cam makes it possible to transform the rotary movement of the button 32 into a correlative rotary movement of the rocker 33.
  • the rocker 33 comprises a cavity with two notches 33a, 33b intended for cooperate with a connecting piece 36 carrying pins 36a, 36b; the part 36 is capable of rotating around the axis A2 in response to the pivoting of the button 32 and for this purpose it has a square 36c cooperating with a recess 32a of the button 32.
  • the rocker 33 has a projection or other support element 38 capable of being applied to the contact-carrying arm 14 to cause the latter to move in the opening direction of the contacts in response to the pivoting of the rocker under the action of the button. 32 during a manual opening command ( Figure 3).
  • a drive element 39 intended to cooperate with the screen 27 during the pivoting of the rocker in the event of manual opening in order to rotate the screen 27 in the direction of its interposition between the contacts.
  • This drive element 39 is presently produced in the form of a projecting finger which is applied against a shoulder 27a provided on the periphery of the screen 27 in response to the pivoting of the rocker 33 following manual opening so to drive the screen against its return spring 30 until the interposition of said screen between the contacts ( Figure 3).
  • the finger 39 of the rocker 33 is moreover shaped so as to be in engagement with the screen 27 during the entire stroke of the rocker between the extreme closed and open positions of the contacts.
  • the support element 38 and the drive finger 39 of the rocker 33 are arranged relative to each other so that the pivoting of the rocker during a manual opening command first causes separation contacts by means of the support element 38, then the interposition of the screen 27 between the contacts opened by means of the drive finger 39.
  • the switch device 10 described above operates as follows:
  • the button 32 capable of rotation about the axis A2 occupies the on position (denoted “1" in FIG. 5) and cooperates via the connecting piece 36 stud 36a, 36b with the notch imprint 33a, 33b of the rocker 33.
  • the finger 39 of the rocker 33 is not applied in the closed position against the shoulder 27a of the screen 27.
  • the apparatus reaches the trigger position shown in FIG. 2 when a short-circuit current flows through the coil 18 of the trigger electromagnet 19.
  • the plunger core 24 is then attracted and moves to the left against a return spring shown diagrammatically at 40 by actuating the lock 25, which lock rotates the contact-carrying arm 14 counterclockwise, and by rotating the screen 27 which is interposed between the fixed 12 and movable contacts 13 in order to favor the cutting of the arc.
  • the device is put in the open position (figure 3) when the operator turns the button 32 around the axis A2 to carry it from the on position to the off position (noted "0" in Figure 5).
  • the rotation of the button 32 is then 90 ° but can of course be carried out on a different angle.
  • the rotation of the button 32 from “1" to “0” determines the rotation around the axis A2 of the connecting piece 36 whose pin 36a engages in the notch 33b of the imprint of the rocker 33. It results in a counterclockwise pivoting of the rocker 33 about the axis A3 during which, on the one hand, the support element 38 causes a counterclockwise pivoting of the contact-carrying arm 14 and, on the other hand, the finger 39 is in abutment against the shoulder 27a of the screen and drives clockwise the rotary screen 27 which is interposed at the end of pivoting of the rocker 33 between the fixed 12 and movable 13 contacts to promote breaking of the arc. Despite the reverse rotational movements of the rocker 33 and the screen 27, the finger 39 of the rocker 33 remains engaged in the shoulder 27a of the screen 27 at the end of pivoting of the rocker (see FIG. 3).
  • resetting (figure 4) is carried out by rotating the button 32 counterclockwise beyond position "0" in figure 5 to the position marked “RESET” in the same figure .
  • the plunger core 24 and the screen 27 (in solid lines in FIG. 4) having returned to their rest position, this rotation of the button 32 causes the rocker 33 to rotate counterclockwise, including the finger 39, illustrated in phantom in FIG. 4, is applied against the shoulder 27a of the screen 27 and drives the latter clockwise to the position illustrated in phantom in Figure 4, and the support element 38 of which causes an angular displacement of the support arm -contact 14 slightly greater than that of said arm in the event of manual opening, authorizing the resetting of lock 25.
  • the manual control of the contact arms or bridges 14 of the various poles is carried out from the button 32 on as many rockers 33 as there are poles, the rockers 33 being coupled together .

Abstract

The device comprises inside a casing (11), a stationary contact (12) and a moving contact (13) which is carried by a displaceable arm (14), with elastic return on closing; a release (19) able to act on the contact-carrying arm (14) in the opening direction via a lock (25) in response to a short-circuit; an arc-cutting screen (27) driven by the release (19) in response to a short-circuit; a manual control member (32) connected to the contact-carrying arm (14). The screen (27) is operated following a manually controlled opening by means of a drive member (39) governed by the manual control member (32). <IMAGE>

Description

La présente invention concerne un appareil électrique inter­rupteur de protection unipolaire ou multipolaire permettant une coupure du courant suite à un déclenchement automatique en cas de surintensité de court-circuit ou à une ouverture par commande manuelle et comportant dans un boîtier :
- au moins un contact fixe et un contact mobile,
- un bras déplaçable portant le contact mobile et sollicité élastiquement dans le sens de la fermeture des contacts,
- un organe déclencheur actionnant en réponse à une surin­tensité de court-circuit, une serrure de déclenchement automatique coopérant avec le bras porte-contact pour entraîner un déplacement de ce dernier dans le sens de l'ouverture des contacts,
- un écran mobile de coupure d'arc occupant une position de repos vers laquelle il est rappelé par un ressort et étant entraîné par l'organe déclencheur en réponse à une surin­tensité de court-circuit pour s'interposer entre les contacts,
- un organe de commande manuelle relié à un organe d'entraî­nement coopérant avec le bras porte-contact pour entraîner par manoeuvre de l'organe de commande un déplacement du bras dans le sens de l'ouverture des contacts.The present invention relates to a single-pole or multi-pole protective electrical switch device enabling a power cut following an automatic triggering in the event of a short-circuit overcurrent or an opening by manual control and comprising in a housing:
- at least one fixed contact and one mobile contact,
- a movable arm carrying the movable contact and resiliently biased in the direction of closing the contacts,
a triggering member actuating in response to a short-circuit overcurrent, an automatic triggering lock cooperating with the contact-carrying arm to cause the latter to move in the direction of opening of the contacts,
- a movable arc cut-out screen occupying a rest position towards which it is returned by a spring and being driven by the triggering member in response to a short-circuit overcurrent to interpose between the contacts,
- A manual control member connected to a drive member cooperating with the contact carrier arm to drive by movement of the control member a movement of the arm in the direction of opening of the contacts.

Un tel appareil interrupteur dit à écran de coupure d'arc est décrit dans le brevet FR - 2 577 712. Cet appareil est un sectionneur-disjoncteur dont le rôle est d'isoler élec­triquement et de protéger contre les courts-circuits un ensemble départ-moteur (contacteur, relais thermique).Such a switch device known as an arc cut-off screen is described in patent FR-2 577 712. This device is a circuit breaker, the role of which is to electrically isolate and protect a feeder assembly against short-circuits. motor (contactor, thermal relay).

On sait par ailleurs qu'il peut être demandé à un même interrupteur de protection assurant une coupure à la suite d'un déclenchement automatique sur court-circuit, de pouvoir également couper des courants de surcharge, fixés par les normes, en réponse à l'actionnement d'un organe de commande manuelle.We also know that it can be requested from the same protection switch ensuring a cut-off following an automatic tripping on short-circuit, to also be able to cut overload currents, fixed by standards, in response to the actuation of a manual control member.

Or, jusqu'à présent, dans la technique de coupure par écran, notamment dans les appareils de disjonction du type décrit dans le brevet déjà cité, l'écran de coupure d'arc n'est sollicité par l'organe de déclenchement automatique sur court-circuit qu'à partir du seuil de déclenchement de celui-ci et ne participe donc qu'à la coupure en cas de court-circuit.However, up to now, in the screen cut-off technique, in particular in the circuit breaker of the type described in the aforementioned patent, the arc cut-off screen is not requested by the automatic tripping device on short-circuit only from the trip threshold thereof and therefore only participates in the cut-out in the event of a short-circuit.

La présente invention a notamment pour but de solliciter le même écran de coupure d'arc aussi bien lors d'un déclenche­ment automatique aux fortes surintensités, c'est-à-dire pour des courants de court-circuit, que lors d'une ouverture par commande manuelle aux basses intensités, c'est-à-dire tant pour des courants de surcharge que pour des courants de valeur inférieure ou égale à celle du courant nominal de l'appareil.The object of the present invention is in particular to request the same arc cut-off screen both during automatic triggering at high overcurrents, that is to say for short-circuit currents, as during opening by manual control at low currents, i.e. both for overload currents and for currents of value less than or equal to that of the rated current of the device.

Elle a pour autre but d'empêcher, lors de l'ouverture manuelle, le déverrouillage de la serrure mécanique de l'appareil, ce qui permet avantageusement de se dispenser du réarmement de celle-ci consécutivement à l'ouverture manuelle.Another purpose is to prevent, during manual opening, the unlocking of the mechanical lock of the device, which advantageously makes it possible to dispense with the rearming thereof following manual opening.

Selon l'invention, un appareil interrupteur de protection du type décrit précédemment, est plus particulièrement carac­ térisé en ce qu'il comporte un organe d'entraînement de l'écran en cas d'ouverture manuelle, assujetti à l'organe de commande manuelle et relié à l'écran pour entraîner celui-ci à l'encontre de son ressort de rappel lors d'une ouverture manuelle, de manière que l'écran s'interpose entre les contacts.According to the invention, a protective switch device of the type described above, is more particularly charac terized in that it comprises a screen drive member in the event of manual opening, subject to the manual control member and connected to the screen to drive the latter against its spring reminder during manual opening, so that the screen is interposed between the contacts.

La solution proposée permet ainsi de bénéficier de l'action de l'écran grâce à une simple liaison mécanique entre l'organe de commande manuelle et l'écran, afin de favoriser la coupure lors d'une ouverture manuelle.The proposed solution thus makes it possible to benefit from the action of the screen thanks to a simple mechanical connection between the manual control member and the screen, in order to promote cutting during manual opening.

Selon une autre caractéristique de l'invention, l'organe d'entraînement de l'écran en cas d'ouverture manuelle est constitué par un doigt en saillie qui est formé sur un basculeur mobile entraîné par l'organe de commande manuelle et qui coopère lors d'une ouverture manuelle avec un épaule­ment prévu sur l'écran. Dans le cas d'un écran de coupure d'arc du type rotatif, ledit épaulement est formé, de préfé­rence, sur la périphérie de l'écran.According to another characteristic of the invention, the screen drive member in the event of manual opening is constituted by a projecting finger which is formed on a movable rocker driven by the manual control member and which cooperates during manual opening with a shoulder provided on the screen. In the case of an arc-breaking screen of the rotary type, said shoulder is preferably formed on the periphery of the screen.

D'autres caractéristiques et avantages de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère aux dessins annexés donnés uniquement à titre d'exemple et dans lesquels :

  • Les figures 1 à 4 représentent schématiquement en élévation un interrupteur de protection conforme à l'invention, respectivement dans les positions de fermeture, de coupure sur court-circuit, d'ouverture manuelle et de réarmement consécutivement à un déclen­chement sur court-circuit ;
  • La figure 5 est une vue de face de l'interrupteur dans une version tripolaire.
Other characteristics and advantages of the invention will appear more clearly in the detailed description which follows and refers to the appended drawings given solely by way of example and in which:
  • Figures 1 to 4 show schematically in elevation a protection switch according to the invention, respectively in the closed, cut-out on short-circuit, manual open and reset positions following a short-circuit trip;
  • Figure 5 is a front view of the switch in a three-pole version.

Sur les figures 1 à 4, un appareil interrupteur à seuil d'intensité, désigné par le repère général 10, comporte un boîtier 11 dans lequel sont logés au moins un contact fixe 12 et un contact mobile 13 porté par un bras de contact 14 lequel est monté à pivotement sur un palier 15 d'axe A1 dans le boîtier 11 et est sollicité dans le sens de la fermeture des contacts par un ressort de rappel non figuré. Le contact fixe 12 est raccordé à une borne d'entrée 16 via une liaison électrique 17 comprenant une bobine 18 appartenant à un électroaimant qui constitue l'organe de déclenchement automatique sur court-circuit 19 de l'appareil considéré, tandis que le contact mobile 13 est relié par une liaison conductrice 20 à une borne de sortie 22.In FIGS. 1 to 4, an intensity threshold switching device, designated by the general reference 10, comprises a housing 11 in which are housed at least one fixed contact 12 and a movable contact 13 carried by a contact arm 14 which is pivotally mounted on a bearing 15 of axis A1 in the housing 11 and is biased in the closing direction contacts by a not shown return spring. The fixed contact 12 is connected to an input terminal 16 via an electrical connection 17 comprising a coil 18 belonging to an electromagnet which constitutes the automatic short-circuit tripping member 19 of the device in question, while the movable contact 13 is connected by a conductive link 20 to an output terminal 22.

En position de fermeture des contacts 12, 13, représentée figure 1, le courant entrant par la borne 16 traverse la bobine 18 et les contacts fermés 12, 13 avant de sortir par la borne opposée 22.In the closed position of the contacts 12, 13, shown in FIG. 1, the current entering through the terminal 16 passes through the coil 18 and the closed contacts 12, 13 before exiting through the opposite terminal 22.

A l'intérieur de la bobine 18 du déclencheur électromagnéti­que 19 est monté à coulissement un noyau magnétique 24 conformé en plongeur qui est apte à actionner en position attirée suite à un court-circuit une serrure de déclenche­ment schématisée en 25 elle-même agissant sur le bras porte­contact 14 dans le sens d'ouverture des contacts (figure 2).Inside the coil 18 of the electromagnetic trip device 19 is slidably mounted a magnetic core 24 shaped as a plunger which is capable of actuating in the attracted position following a short circuit a trip lock shown diagrammatically in 25 acting on the contact carrying arm 14 in the opening direction of the contacts (figure 2).

Un écran de coupure 27 en matériau isolant, connu en soi, est monté à rotation sur un pivot fixe 28, d'axe X-X paral­léle à l'axe A1, dans le boitier 11 et est actionné directe­ment ou indirectement par le noyau plongeur 24 du déclen­cheur électromagnétique 19 en réponse à une surintensité de court-circuit pour s'interposer entre les contacts fixe 12 et mobile 13 (figure 2) afin de contribuer à étirer, refroi­dir et déstabiliser l'arc de coupure. Dans le présent exem­ple de réalisation, l'écran rotatif 27 est directement accroché sur une queue 29 du noyau plongeur 24 et est propulsable par celle-ci à l'encontre d'un ressort de rappel schématisé en 30 sous l'action du noyau plongeur lors d'un court-circuit.A cut-off screen 27 made of insulating material, known per se, is rotatably mounted on a fixed pivot 28, of axis XX parallel to the axis A1, in the housing 11 and is actuated directly or indirectly by the plunger core 24 of the electromagnetic trip 19 in response to a short-circuit overcurrent to interpose between the fixed 12 and movable 13 contacts (Figure 2) to help stretch, cool and destabilize the breaking arc. In the present embodiment, the rotary screen 27 is directly hung on a tail 29 of the plunger core 24 and can be propelled by the latter against a return spring shown diagrammatically at 30 under the action of the plunger core during a short circuit.

Un bouton de commande manuelle 32 situé à l'extérieur du boitier 11 coopère avec un basculeur de commande 33 du bras porte-contact ; le bouton est monté pivotant autour d'un axe A2 perpendiculaire à l'axe A1, tandis que le basculeur est monté à pivotement sur un palier 34 d'axe A3 parallèle à l'axe A1. Une liaison mécanique appropriée à engrénement et/ou à came permet de transformer le mouvement rotatif du bouton 32 en un mouvement rotatif corrélatif du basculeur 33. Dans le présent exemple de réalisation, le basculeur 33 comprend une empreinte à deux encoches 33a, 33b destinées à coopérer avec une pièce de liaison 36 portant des tenons 36a, 36b ; la pièce 36 est susceptible de tourner autour de l'axe A2 en réponse au pivotement du bouton 32 et elle présente à cet effet un carré 36c coopérant avec un évide­ment 32a du bouton 32.A manual control button 32 located outside the housing 11 cooperates with a control rocker 33 of the contact carrier arm; the button is pivotally mounted around an axis A2 perpendicular to the axis A1, while the rocker is pivotally mounted on a bearing 34 of axis A3 parallel to the axis A1. A mechanical link suitable for engagement and / or cam makes it possible to transform the rotary movement of the button 32 into a correlative rotary movement of the rocker 33. In the present exemplary embodiment, the rocker 33 comprises a cavity with two notches 33a, 33b intended for cooperate with a connecting piece 36 carrying pins 36a, 36b; the part 36 is capable of rotating around the axis A2 in response to the pivoting of the button 32 and for this purpose it has a square 36c cooperating with a recess 32a of the button 32.

Le basculeur 33 présente une saillie ou autre élément d'appui 38 susceptible d'application sur le bras porte­contact 14 pour entraîner un déplacement de celui-ci dans le sens d'ouverture des contacts en réponse au pivotement du basculeur sous l'action du bouton 32 lors d'une commande manuelle d'ouverture (figure 3).The rocker 33 has a projection or other support element 38 capable of being applied to the contact-carrying arm 14 to cause the latter to move in the opening direction of the contacts in response to the pivoting of the rocker under the action of the button. 32 during a manual opening command (Figure 3).

Conformément à l'invention, il est également prévu sur le basculeur 33 un élément d'entraînement 39 destiné à coopérer avec l'écran 27 lors du pivotement du basculeur en cas d'ouverture manuelle afin d'entraîner en rotation l'écran 27 dans le sens de son interposition entre les contacts. Cet élément d'entraînement 39 est présentement réalisé sous la forme d'un doigt en saillie qui vient s'appliquer contre un épaulement 27a prévu sur la périphérie de l'écran 27 en réponse au pivotement du basculeur 33 suite à une ouverture manuelle de façon à entraîner l'écran à l'encontre de son ressort de rappel 30 et ce, jusqu'à l'interposition dudit écran entre les contacts (figure 3). Le doigt 39 du bascu­leur 33 est par ailleurs conformé de manière à être en engagement avec l'écran 27 pendant toute la course du bascu­leur entre les positions extrêmes de fermeture et d'ouvertu­re des contacts.According to the invention, there is also provided on the rocker 33 a drive element 39 intended to cooperate with the screen 27 during the pivoting of the rocker in the event of manual opening in order to rotate the screen 27 in the direction of its interposition between the contacts. This drive element 39 is presently produced in the form of a projecting finger which is applied against a shoulder 27a provided on the periphery of the screen 27 in response to the pivoting of the rocker 33 following manual opening so to drive the screen against its return spring 30 until the interposition of said screen between the contacts (Figure 3). The finger 39 of the rocker 33 is moreover shaped so as to be in engagement with the screen 27 during the entire stroke of the rocker between the extreme closed and open positions of the contacts.

L'élément d'appui 38 et le doigt d'entraînement 39 du bascu­leur 33 sont disposés l'un par rapport à l'autre de manière que le pivotement du basculeur lors d'une commande manuelle d'ouverture provoque d'abord la séparation des contacts au moyen de l'élément d'appui 38, puis l'interposition de l'écran 27 entre les contacts ouverts au moyen du doigt d'entraînement 39.The support element 38 and the drive finger 39 of the rocker 33 are arranged relative to each other so that the pivoting of the rocker during a manual opening command first causes separation contacts by means of the support element 38, then the interposition of the screen 27 between the contacts opened by means of the drive finger 39.

L'appareil interrupteur 10 décrit ci-dessus fonctionne de la manière suivante :The switch device 10 described above operates as follows:

Dans la position de fermeture des contacts (figure 1), le bouton 32 susceptible de rotation autour de l'axe A2 occupe la position marche (notée "1" sur la figure 5) et coopère par l'intermédiaire de la pièce de liaison 36 à tenons 36a, 36b avec l'empreinte à encoches 33a, 33b du basculeur 33. Le doigt 39 du basculeur 33 n'est pas appliqué en position de fermeture contre l'épaulement 27a de l'écran 27.In the closed position of the contacts (FIG. 1), the button 32 capable of rotation about the axis A2 occupies the on position (denoted "1" in FIG. 5) and cooperates via the connecting piece 36 stud 36a, 36b with the notch imprint 33a, 33b of the rocker 33. The finger 39 of the rocker 33 is not applied in the closed position against the shoulder 27a of the screen 27.

L'appareil parvient à la position de déclenchement représen­tée figure 2 lorsqu'un courant de court-circuit parcourt la bobine 18 de l'électroaimant déclencheur 19. Le noyau plon­geur 24 est alors attiré et se déplace vers la gauche à l'encontre d'un ressort de rappel schématisé en 40 en actionnant la serrure 25, laquelle serrure fait pivoter en sens antihoraire le bras porte-contact 14, et en faisant tourner en sens horaire l'écran 27 qui s'interpose entre les contacts fixe 12 et mobile 13 afin de favoriser la coupure de l'arc.The apparatus reaches the trigger position shown in FIG. 2 when a short-circuit current flows through the coil 18 of the trigger electromagnet 19. The plunger core 24 is then attracted and moves to the left against a return spring shown diagrammatically at 40 by actuating the lock 25, which lock rotates the contact-carrying arm 14 counterclockwise, and by rotating the screen 27 which is interposed between the fixed 12 and movable contacts 13 in order to favor the cutting of the arc.

Au cours de ce déclenchement sur court-circuit, le basculeur 33 ne change pas de position.During this tripping on short circuit, the rocker 33 does not change position.

Pour couper un courant de surcharge, ou même pour interrom­pre le circuit en service normal, l'appareil est mis dans la position d'ouverture (figure 3) lorsque l'opérateur fait tourner le bouton 32 autour de l'axe A2 pour le porter de la position marche à la position arrêt (notée "0" sur la figure 5). La rotation du bouton 32 est alors de 90° mais peut bien entendu s'effectuer sur un angle différent.To cut an overload current, or even to interrupt the circuit in normal service, the device is put in the open position (figure 3) when the operator turns the button 32 around the axis A2 to carry it from the on position to the off position (noted "0" in Figure 5). The rotation of the button 32 is then 90 ° but can of course be carried out on a different angle.

La rotation du bouton 32 de "1" vers "0" détermine la rotation autour de l'axe A2 de la pièce de liaison 36 dont le tenon 36a s'engage dans l'encoche 33b de l'empreinte du basculeur 33. Il en résulte un pivotement antihoraire du basculeur 33 autour de l'axe A3 au cours duquel, d'une part, l'élément d'appui 38 entraîne un pivotement antihoraire du bras porte-contact 14 et, d'autre part, le doigt 39 est en appui contre l'épaulement 27a de l'écran et entraîne en sens horaire l'écran rotatif 27 qui s'interpose en fin de pivote­ment du basculeur 33 entre les contacts fixe 12 et mobile 13 pour favoriser la coupure de l'arc. Malgré les mouvements de rotation inverses du basculeur 33 et de l'écran 27, le doigt 39 du basculeur 33 reste engagé dans l'épaulement 27a de l'écran 27 en fin de pivotement du basculeur (voir figure 3).The rotation of the button 32 from "1" to "0" determines the rotation around the axis A2 of the connecting piece 36 whose pin 36a engages in the notch 33b of the imprint of the rocker 33. It results in a counterclockwise pivoting of the rocker 33 about the axis A3 during which, on the one hand, the support element 38 causes a counterclockwise pivoting of the contact-carrying arm 14 and, on the other hand, the finger 39 is in abutment against the shoulder 27a of the screen and drives clockwise the rotary screen 27 which is interposed at the end of pivoting of the rocker 33 between the fixed 12 and movable 13 contacts to promote breaking of the arc. Despite the reverse rotational movements of the rocker 33 and the screen 27, the finger 39 of the rocker 33 remains engaged in the shoulder 27a of the screen 27 at the end of pivoting of the rocker (see FIG. 3).

On notera que le déplacement angulaire du bras porte-contact 14 lors d'une ouverture manuelle est supérieur à celui dudit bras lors d'un déclenchement sur court-circuit, comme cela est connu d'après le brevet FR - 2 577 712.It will be noted that the angular displacement of the contact-carrying arm 14 during manual opening is greater than that of said arm during tripping on a short circuit, as is known from patent FR-2 577 712.

Etant donné que le noyau plongeur 24 du déclencheur électro­magnétique 19 reste en position de repos au cours de la phase d'ouverture manuelle qui vient d'être décrite, il n'actionne donc pas la serrure 25, ce qui permet d'éviter le déverrouillage de ladite serrure et, par conséquent, son réarmement.Since the plunger core 24 of the electromagnetic trip device 19 remains in the rest position during the manual opening phase which has just been described, it therefore does not actuate the lock 25, which makes it possible to avoid unlocking of said lock and, therefore, its rearming.

Dans ces conditions, après ouverture par commande manuelle, la remise en position de fermeture de l'appareil s'effectue simplement par rotation horaire du bouton 32 de "0" vers "1". La rotation du bouton 32 entraîne un pivotement horaire du basculeur 33 qui autorise, par l'effacement de l'élément 38 et du doigt 39 et sous l'action du ressort 30, la rota­tion antihoraire de l'écran 27 conjuguée avec la fermeture des contacts 12, 13 jusqu'à la position de la figure 1.Under these conditions, after opening by manual control, the device is returned to the closed position. simply by clockwise rotation of button 32 from "0" to "1". The rotation of the button 32 causes a clockwise pivoting of the rocker 33 which allows, by the erasure of the element 38 and the finger 39 and under the action of the spring 30, the counterclockwise rotation of the screen 27 combined with the closing of the contacts 12, 13 to the position of figure 1.

Après déclenchement sur court-circuit, le réarmement (figu­re 4) s'effectue par rotation du bouton 32 en sens antiho­raire au-delà de la position "0" de la figure 5 jusqu'à la position notée "RESET" sur la même figure. Le noyau plongeur 24 et l'écran 27 (en traits pleins sur la figure 4) étant revenus à leur position de repos, cette rotation du bouton 32 provoque un pivotement antihoraire du basculeur 33 dont le doigt 39, illustré en traits mixtes figure 4, vient s'appliquer contre l'épaulement 27a de l'écran 27 et entraî­ne celui-ci en sens horaire jusqu'à la position illustrée en traits mixtes figure 4, et dont l'élément d'appui 38 entraî­ne un déplacement angulaire du bras porte-contact 14 légère­ment supérieur à celui dudit bras en cas d'ouverture manuel­le, autorisant le réarmement de la serrure 25.After tripping on a short-circuit, resetting (figure 4) is carried out by rotating the button 32 counterclockwise beyond position "0" in figure 5 to the position marked "RESET" in the same figure . The plunger core 24 and the screen 27 (in solid lines in FIG. 4) having returned to their rest position, this rotation of the button 32 causes the rocker 33 to rotate counterclockwise, including the finger 39, illustrated in phantom in FIG. 4, is applied against the shoulder 27a of the screen 27 and drives the latter clockwise to the position illustrated in phantom in Figure 4, and the support element 38 of which causes an angular displacement of the support arm -contact 14 slightly greater than that of said arm in the event of manual opening, authorizing the resetting of lock 25.

Lorsque le bouton 32 est remis à sa position "1", il provo­que un pivotement horaire du basculeur 33 qui autorise, par l'effacement de l'élément 38 et du doigt 39 et sous l'action du ressort 30, la rotation antihoraire de l'écran 27 conju­guée avec la fermeture des contacts 12, 13 pour reprendre la position initiale de la figure 1.When the button 32 is returned to its position "1", it causes a clockwise pivoting of the rocker 33 which authorizes, by erasing the element 38 and the finger 39 and under the action of the spring 30, the counterclockwise rotation of the screen 27 combined with the closing of the contacts 12, 13 to return to the initial position of FIG. 1.

Dans une version multipolaire de l'interrupteur, la commande manuelle des bras ou ponts de contact 14 des divers pôles s'effectue à partir du bouton 32 sur autant de basculeurs 33 qu'il y a de pôles, les basculeurs 33 étant accouplés entre eux.In a multipolar version of the switch, the manual control of the contact arms or bridges 14 of the various poles is carried out from the button 32 on as many rockers 33 as there are poles, the rockers 33 being coupled together .

Il va de soi que l'on peut apporter des modifications à l'appareil interrupteur décrit sans sortir du cadre de l'invention.It goes without saying that modifications can be made to the switch device described without departing from the scope of the invention.

Claims (5)

1. Appareil électrique interrupteur de protection permettant une coupure du courant suite à un déclenchement automatique en cas de surintensité de court-circuit ou à une ouverture par commande manuelle, comportant dans un boîtier (11) :
- au moins un contact fixe (12) et un contact mobile (13),
- un bras déplaçable (14) portant le contact mobile (13) et sollicité élastiquement dans le sens de la fermeture des contacts,
- un organe déclencheur (19) actionnant en réponse à une surintensité de court-circuit une serrure de déclenche­ment automatique (25) coopérant avec le bras porte-contact (14) pour entraîner un déplacement de ce dernier dans le sens de l'ouverture des contacts,
- un écran mobile (27) de coupure d'arc occupant une posi­tion de repos vers laquelle il est rappelé par un ressort (30) et étant entraîné par l'organe déclencheur en réponse à une surintensité de court-circuit pour s'interposer entre les contacts,
- un organe de commande manuelle (32) relié à un organe d'entraînement (38) coopérant avec le bras porte-contact (14) pour entraîner par manoeuvre de l'organe de commande un déplacement du bras dans le sens de l'ouverture des contacts,
caractérisé en ce que l'appareil comporte un organe d'entraînement (39) de l'écran en cas d'ouverture manuelle, assujetti à l'organe de commande manuelle (32) et agissant sur l'écran (27) pour entraîner celui-ci à l'encontre de son ressort de rappel (30) lors d'une ouverture manuelle, de manière que l'écran s'interpose entre les contacts.1. Electrical protection switch device enabling a cut in the current following an automatic tripping in the event of a short-circuit overcurrent or an opening by manual control, comprising in a housing (11):
- at least one fixed contact (12) and one movable contact (13),
- a movable arm (14) carrying the movable contact (13) and resiliently biased in the direction of closing of the contacts,
- a triggering member (19) actuating in response to a short-circuit overcurrent an automatic triggering lock (25) cooperating with the contact-carrying arm (14) to cause a displacement of the latter in the direction of opening of the contacts,
- a movable arc break screen (27) occupying a rest position towards which it is returned by a spring (30) and being driven by the triggering member in response to a short-circuit overcurrent to intervene between contacts,
- a manual control member (32) connected to a drive member (38) cooperating with the contact-carrying arm (14) to drive by movement of the control member a movement of the arm in the opening direction contacts,
characterized in that the device comprises a drive member (39) for the screen in the event of manual opening, subject to the manual control member (32) and acting on the screen (27) to drive the one here against its return spring (30) during manual opening, so that the screen is interposed between the contacts. 2. Appareil électrique interrupteur selon la revendi­cation 1,
caractérisé en ce qu'il comporte un basculeur mobile (33) entraîné par l'organe de commande manuelle (32), et que l'organe d'entraînement de l'écran est constitué par un doigt en saillie (39) formé sur le basculeur (33) et coopé­rant avec un épaulement (27a) prévu sur l'écran (27) lors d'une ouverture manuelle.2. An electrical switch device according to claim 1,
characterized in that it comprises a movable rocker (33) driven by the manual control member (32), and that the screen drive member is constituted by a projecting finger (39) formed on the rocker (33) and cooperating with a shoulder (27a) provided on the screen (27) during manual opening. 3. Appareil électrique interrupteur selon la revendi­cation 2, dans lequel l'écran (27) de coupure d'arc est du type rotatif,
caractérisé en ce que l'épaulement (27a) est formé sur la périphérie de l'écran.3. An electrical switch device according to claim 2, in which the arc cut-off screen (27) is of the rotary type,
characterized in that the shoulder (27a) is formed on the periphery of the screen. 4. Appareil électrique interrupteur selon la revendi­cation 3,
caractérisé en ce que le basculeur (33) est monté pivotant sur un palier (34) d'axe parallèle à l'axe de rotation de l'écran (27).4. electrical switch device according to claim 3,
characterized in that the rocker (33) is pivotally mounted on a bearing (34) with an axis parallel to the axis of rotation of the screen (27). 5. Appareil électrique interrupteur selon l'une des revendications 2 à 4,
caractérisé en ce que le basculeur (33) est également pourvu de l'organe d'entraînement (38) du bras porte-contact, les organes d'entraînement respectifs (38, 39) du bras porte-­contact (14) et de l'écran (27) étant positionnés l'un par rapport à l'autre sur le basculeur (33) de telle sorte que, à la suite de la manoeuvre de l'organe de commande manuelle (32), le déplacement du basculeur produise d'abord l'ouver­ture des contacts, puis l'interposition de l'écran entre les contacts.5. Electrical switch device according to one of claims 2 to 4,
characterized in that the rocker (33) is also provided with the drive member (38) of the contact carrier arm, the respective drive members (38, 39) of the contact carrier arm (14) and the 'screen (27) being positioned relative to each other on the rocker (33) so that, following the operation of the manual control member (32), the movement of the rocker produces d 'first the opening of the contacts, then the interposition of the screen between the contacts.
EP19880402235 1987-10-02 1988-09-06 Protective switch with a screen for cutting the arc Expired - Lifetime EP0310469B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8713621 1987-10-02
FR8713621A FR2621418B1 (en) 1987-10-02 1987-10-02 PROTECTION SWITCH WITH ARC SHUTDOWN SCREEN

Publications (2)

Publication Number Publication Date
EP0310469A1 true EP0310469A1 (en) 1989-04-05
EP0310469B1 EP0310469B1 (en) 1992-10-21

Family

ID=9355449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880402235 Expired - Lifetime EP0310469B1 (en) 1987-10-02 1988-09-06 Protective switch with a screen for cutting the arc

Country Status (3)

Country Link
EP (1) EP0310469B1 (en)
DE (1) DE3875446T2 (en)
FR (1) FR2621418B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005112050A1 (en) * 2004-04-19 2005-11-24 Soule Protection Surtensions Surge voltage protection device with arc-breaking means
EP2466601A1 (en) * 2010-12-20 2012-06-20 Schneider Electric Industries SAS Cutting device with an arc-cutting screen
WO2015058501A1 (en) * 2013-10-23 2015-04-30 通能顺达科技国际有限公司 A synchronous insulation separation power switch device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19726402B4 (en) * 1997-06-21 2009-03-05 Marquardt Gmbh Electric switch
DE19735521A1 (en) * 1997-08-16 1999-02-18 Kloeckner Moeller Gmbh Arc extinction device for short circuit current limiting switch
DE102018108369A1 (en) * 2018-04-09 2019-10-10 Soulsurf Gmbh LOAD DISCONNECTOR AND ARRANGEMENT WITH A SWITCH DISCONNECTOR

Citations (3)

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Publication number Priority date Publication date Assignee Title
EP0189689A1 (en) * 1984-12-28 1986-08-06 Telemecanique Electrical switch with screen
EP0193440A1 (en) * 1985-02-14 1986-09-03 Telemecanique Protective switch
FR2596916A1 (en) * 1986-04-04 1987-10-09 Telemecanique Electrique Automatic or manual opening bipolar circuit breaker with bistable electromagnet and magnetisable striker core

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0189689A1 (en) * 1984-12-28 1986-08-06 Telemecanique Electrical switch with screen
EP0193440A1 (en) * 1985-02-14 1986-09-03 Telemecanique Protective switch
FR2596916A1 (en) * 1986-04-04 1987-10-09 Telemecanique Electrique Automatic or manual opening bipolar circuit breaker with bistable electromagnet and magnetisable striker core

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005112050A1 (en) * 2004-04-19 2005-11-24 Soule Protection Surtensions Surge voltage protection device with arc-breaking means
EP2466601A1 (en) * 2010-12-20 2012-06-20 Schneider Electric Industries SAS Cutting device with an arc-cutting screen
FR2969366A1 (en) * 2010-12-20 2012-06-22 Schneider Electric Ind Sas ARM CUT SCREEN CUTTING DEVICE
US8686311B2 (en) 2010-12-20 2014-04-01 Schneider Electric Industries Sas Breaking device with arc breaking shield
WO2015058501A1 (en) * 2013-10-23 2015-04-30 通能顺达科技国际有限公司 A synchronous insulation separation power switch device

Also Published As

Publication number Publication date
DE3875446T2 (en) 1993-03-04
EP0310469B1 (en) 1992-10-21
FR2621418B1 (en) 1989-12-22
FR2621418A1 (en) 1989-04-07
DE3875446D1 (en) 1992-11-26

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