EP0452230B1 - Driving mechanism for circuit breaker - Google Patents

Driving mechanism for circuit breaker Download PDF

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Publication number
EP0452230B1
EP0452230B1 EP19910420108 EP91420108A EP0452230B1 EP 0452230 B1 EP0452230 B1 EP 0452230B1 EP 19910420108 EP19910420108 EP 19910420108 EP 91420108 A EP91420108 A EP 91420108A EP 0452230 B1 EP0452230 B1 EP 0452230B1
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EP
European Patent Office
Prior art keywords
arm
handle
indicator
position
characterized
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
EP19910420108
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German (de)
French (fr)
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EP0452230A1 (en
Inventor
Michel Lazareth
Noel Lecorre
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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Publication date
Priority to FR9004642A priority Critical patent/FR2660794B1/en
Priority to FR9004642 priority
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0452230A1 publication Critical patent/EP0452230A1/en
Application granted granted Critical
Publication of EP0452230B1 publication Critical patent/EP0452230B1/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/50Manual reset mechanisms which may be also used for manual release
    • H01H71/501Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04Means for indicating condition of the switching device
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/50Manual reset mechanisms which may be also used for manual release
    • H01H71/52Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Description

  • L'invention est relative à un mécanisme de commande pour disjoncteur électrique à boîtier isolant renfermant une paire de contacts fixe et mobile, ledit contact mobile étant porté par un bras de contact actionné par le mécanisme, lequel comporte une manette montée à pivotement sur un axe et déplaçable dans un orifice du boîtier entre deux positions extrêmes F de fermeture et O d'ouverture, une biellette de transmission accouplée à la manette pour former une genouillère, une liaison mécanique brisable entre la biellette et un levier support du bras de contact, un levier de déclenchement pour verrouiller et déverrouiller la liaison mécanique, et un indicateur mécanique de l'état du disjoncteur ayant un voyant susceptible d'occuper une position active visible de l'extérieur dans la position O d'ouverture de la manette. The invention relates to a control mechanism for electrical circuit breaker with insulating case housing a pair of stationary and movable contacts, said movable contact being supported by a contact arm actuated by the mechanism, which comprises a lever pivotally mounted on a shaft and movable in an orifice of the housing between two extreme positions F and O of closure opening, a transmission rod coupled to the handle to form a toggle, a breakable mechanical link between the rod and a contact arm of the support lever, trip lever to lock and unlock the mechanical link, and a mechanical indicator of the circuit breaker status indicator having a likely to occupy an active position visible from outside in the open position O of the handle.
  • Un tel mécanisme est décrit dans le document EP-A-0 342133, comprenant un dispositif indicateur de soudure des contacts, et de signalisation apparente de l'ouverture du disjoncteur. Such a mechanism is described in EP-A-0 342133, comprising a welding indicator device contacts, and similar signaling the opening of the circuit breaker. Le voyant est fixé directement sur la périphérie de l'embase de la manette, et se déplace en continu avec cette dernière. The indicator is attached directly to the periphery of the base of the joystick, and moves continuously therewith. Le positionnement du voyant est néanmoins tributaire de l'effort d'essai exercé sur la manette en cas de soudage des contacts. The positioning of the light is still dependent on the test force exerted on the handle in case of contact welding. En fonction de l'élasticité des organes du mécanisme, un actionnement forcé de la manette peut rendre visible une portion du voyant, entraînant des risques d'erreurs sur l'état réel des contacts du disjoncteur. Depending on the elasticity of the bodies mechanism, a forced actuation of the handle can make visible a portion of the light, resulting in the risk of errors on the real state of the circuit breaker contacts.
  • L'objet de l'invention consiste à perfectionner la fiabilité d'un indicateur mécanique de l'état d'un disjoncteur en le rendant insensible à l'effort d'essai exercé sur la manette. The object of the invention to improve the reliability of a mechanical indicator of the state of a circuit breaker by making it insensitive to the test effort on the joystick.
  • Le mécanisme selon l'invention est caractérisé en ce que l'indicateur comporte un levier bistable monté à rotation libre sur l'axe de la manette, et coopérant avec un nez du levier support destiné à verrouiller le voyant et à le rendre invisible dans une position inactive stable, lorsque la manette est actionnée depuis la position F de fermeture vers la position O d'ouverture en cas de soudage des contacts. The mechanism according to the invention is characterized in that the indicator comprises a bistable lever mounted with free rotation on the axis of the handle, and cooperating with a nose of the support lever for locking the light and make it invisible in a stable inactive position, when the handle is actuated from the position F of closure to the open position O in the event of welding of the contacts.
  • L'agencement bistable de l'indicateur permet de reconnaître en toute sécurité l'état ouvert ou fermé des contacts. The bistable arrangement of the indicator can recognize safely open or closed state of the contacts. Le voyant est exclusivement visible en position active, correspondant à la position d'ouverture de la manette après séparation des contacts. The light is only visible in the active position corresponding to the open position of the handle after separation of the contacts. Le voyant est invisible en position inactive lorsque les contacts sont fermés normalement ou par soudure accidentelle. The light is invisible to the inactive position when the contacts are normally closed or accidental welding. Le voyant est insensible à l'effort d'essai exercé sur la manette, étant donné sa coopération avec le levier support du bras de contact. The indicator is insensitive to the testing effort on the handle, given its cooperation with the support lever of the contact arm.
  • Le passage de la position inactive vers la position active de l'indicateur bistable s'effectue après libération du nez au moyen d'un ressort de rappel, sollicitant simultanément la manette vers la position 0 d'ouverture. The passage from the inactive position to the active position of the bistable indicator takes place after release of the nose by means of a return spring, simultaneously urging the handle to the open position 0.
  • Le levier de l'indicateur comporte un premier bras de signalisation sur lequel est agencé le voyant, et un deuxième bras de commande coopérant avec le nez, les deux bras étant décalés angulairement l'un de l'autre par un angle prédéterminé, centré sur l'axe de la manette. The lever of the indicator comprises a first signaling arm on which the LED is arranged, and a second control arm cooperating with the nose, the two arms being angularly offset from each other by a predetermined angle, centered on the axis of the joystick.
  • Le rappel de l'indicateur vers la position inactive s'effectue au moyen de l'action de la manette sur le premier bras. The biasing the indicator to the inactive position takes place by means of the action of the handle on the first arm.
  • Selon un développement de l'invention, le mécanisme est équipé d'un dispositif mécanique de blocage de la manette dans une position S intermédiaire en cas de soudage des contacts. According to a development of the invention, the mechanism is equipped with a mechanical device of the handle lock in an intermediate position S in case of welding of the contacts. Il en résulte une fonction de sectionnement à coupures pleinement apparente, et à indicateur de position des contacts. The result is a disconnect function fully apparent cuts, and contact position indicator.
  • D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode réalisation de l'invention donné à titre d'exemple et représenté aux dessins annexé, dans lesquels : Other advantages and features will become more apparent from the following description of an embodiment of the invention given by way of example and shown in the accompanying drawings, wherein:
    • la figure 1 est une vue schématique du mécanisme équipé de l'indicateur selon l'invention, le disjoncteur étant représenté en position fermé-soudé des contacts; Figure 1 is a schematic view of the mechanism with the indicator according to the invention, the circuit breaker being represented in the closed-welded position of the contacts;
    • les figures 2 à 4 sont des vues partielles à échelles agrandies de la figure 1, montrant l'indicateur respectivement en position de fermeture, en position fermé-soudé, et en position d'ouverture du mécanisme; Figures 2 to 4 are partial views in enlarged scale of Figure 1, showing the indicator respectively in the closed position, closed-welded position, and in the open position of the mechanism;
    • les figures 5 à 7 sont des vues identiques des figures 2 à 4 d'une variante de réalisation. Figures 5 to 7 are similar views of Figures 2 to 4 of a variant embodiment.
    • les figures 8 et 9 montrent deux vues de la manette d'une autre variante d'indicateur représenté en position d'ouverture et en position soudé. Figures 8 and 9 show two views of the handle of another indicator variant shown in the open position and welded in position.
    • la figure 10 est une vue identique à la figure 1, le mécanisme étant équipé d'un dispositif de blocage de la manette en cas de soudage des contacts. Figure 10 is a view identical to Figure 1, the mechanism being equipped with a locking device of the handle in case of welding of the contacts.
  • En référence à la figure 1, le mécanisme 10 est logé dans le boîtier 12 isolant du disjoncteur, et est destiné à actionner un bras de contact mobile 13 ayant une pièce de contact 14 coopérant avec un contact fixe 16. Le mécanisme 10 comporte une manette 18 pivotante accouplée à une biellette 20 de transmission pour former une genouillère 22, et une platine 24 montée à rotation limitée sur un pivot 26 entre une position de fermeture et une position d'ouverture des contacts 14, 16. Sur le pivot 26 est enfilé un levier support 28 isolant du bras ce contact 13. Une liaison mécanique 30 à bielle brisable est formée par une deuxième genouillère ayant un crochet d'accrochage 32 monté à pivotement sur un axe 34 de la platine 24 en étant articulé à la biellette 20 de transmission. Referring to Figure 1, the mechanism 10 is housed in the insulating housing 12 of the circuit breaker, and is intended to actuate a movable contact arm 13 having a contact part 14 cooperating with a fixed contact 16. The mechanism 10 includes a handle 18 pivotally coupled to a link 20 of transmission to form a toggle joint 22, and a limited plate 24 rotatably mounted on a pivot 26 between a closed position and a contact open position 14, 16. on the pivot 26 is threaded an arm of the support lever 28 insulating the contact 13. a mechanical connection 30 to frangible link is formed by a second toggle having a latching hook 32 pivotally mounted on a pin 34 of the plate 24 being hinged to the connecting rod 20 transmission.
  • Un levier de déclenchement 36 est monté sur un axe 38 de la platine 24 et coopère avec le bec de retenue du crochet d'accrochage 32 pour assurer le verrouillage et le déverrouillage de la liaison mécanique 30. A trigger lever 36 is mounted on an axis 38 of the plate 24 and cooperates with the retaining nose of the attachment hook 32 for locking and unlocking the mechanical connection 30.
  • La manette 18 fait saillie d'un orifice 40 du boîtier 12 et est montée à pivotement sur un axe 42 entre deux positions extrèmes F et 0 correspondant respectivement à la fermeture et à l'ouverture des contacts 14,16. The handle 18 protrudes from a hole 40 of the housing 12 and is pivotally mounted on an axis 42 between two extreme positions F and 0 corresponding to the closing and opening of the contacts 14,16 respectively.
  • Selon l'invention, le mécanisme 10 est doté c'un indicateur 50 mécanique formé par un levier bistable (fig. 1 à 4) monté à rotation libre sur l'axe 42 de la manette 18. Un ressort de rappel (non représenté) sollicite l'indicateur 50 dans le sens inverse des aiguilles d'une montre correspondant au sens d'ouverture de la manette 18. L'indicateur 50 comporte un premier bras 52 de signalisation dont la face latérale porte un voyant 54 coloré et une deuxième bras 54′ de commande équipé d'un redan 55 susceptible de coopérer avec un nez 56 du levier support 28. Les premier et deuxième bras 52,54′ sont décalés angulairement l'un de l'autre par un angle aigu centré sur l'axe 42 de la manette 18. Les deux flancs opposés du deuxième bras 54′ viennent en engagement avec une paire de butées de fin de course 58,60, solidaire du boîtier 12 pour délimiter la course angulaire de l'indicateur 50. According to the invention, the mechanism 10 is provided that a mechanical indicator 50 formed by a bistable lever (fig. 1 to 4) mounted for free rotation on the axis 42 of the lever 18. A return spring (not shown) biases the indicator 50 in the opposite direction of the clockwise direction corresponding to the opening of the handle 18. the indicator 50 comprises a first arm 52 signaling the lateral face bears a colored indicator 54 and a second arm 54 'control equipped with a recess 55 adapted to cooperate with a nose 56 of the support lever 28. the first and second arms 52,54' are angularly offset from each other by an acute angle centered on the axis 42 of the handle 18. the two opposite sides of the second arm 54 'come into engagement with a pair of stops 58,60 end race fixed to the housing 12 to define the angular travel of the indicator 50.
  • Le fonctionnement du mécanisme 10 à indicateur 50 mécanique selon les figures 1 à 4 est le suivant : The operation of the mechanism 10-50 mechanical indicator according to Figures 1 to 4 is as follows:
  • Dans la position de fermeture des contacts 14,16 (fig. 2), la manette 18 se trouve dans la position F stable de droite, et son bossage 62 prend appui sur le premier bras 52 sollicitant le deuxième bras 54′ de commande montre la première butée 58. In the closed position of the contacts 14,16 (Fig. 2), the handle 18 is in the stable position F on the right, and boss 62 is supported on the first arm 52 urging the second arm 54 'shows the control first stop 58.
  • L'indicateur 50 se trouve dans une première position inactive stable, dans laquelle le voyant 54 du premier bras 52 reste invisible depuis l'extérieur. The indicator 50 is in a first stable inactive position, in which the LED 54 of the first arm 52 remains invisible from the outside.
  • En cas de soudage des contacts 14,16 (fig. 1 et 3), le bras de contact 13 et son levier support 28 restent fixes, et le nez 56 bloque le redan 55 du deuxième bras 54′ pour maintenir l'indicateur 50 dans la première position stable, lorsque l'opérateur tente d'actionner la manette 18 vers la position d'ouverture. If welding of the contacts 14,16 (fig. 1 and 3), the contact arm 13 and a support lever 28 remain stationary, and the nose 56 locks the recess 55 of the second arm 54 'for holding the indicator 50 in the first stable position, when the operator tries to operate the handle 18 to the open position. Le voyant 54 reste invisible lorsque la manette 18 se trouve entre la position S intermédiaire, et la position O d'ouverture. The LED 54 remains invisible when the handle 18 is between the intermediate position S and the open position O.
  • En cas de non-soudage des contacts 14,16 suite à une ouverture manuelle ou un déclenchement automatique du mécanisme 10, la manette 18 est déplacée vers la position 0 de gauche, et le nez 56 du levier support 28 n'interfère plus avec le redan 55 du deuxième bras 54′. If non-contact welding 14.16 after manual opening or automatic tripping of the mechanism 10, the handle 18 is moved to the left position 0, and the nose 56 of the support lever 28 no longer interferes with the recess 55 of the second arm 54 '. L'absence de blocage du nez 56 sur le deuxième bras 54′ et du bossage 62 de la manette 18 sur le premier bras 52 autorise le pivotement dans le sens inverse des aiguilles d'une montre de l'indicateur 50 vers la deuxième position active stable (fig. 4) sous l'action du ressort de rappel. The absence of the locking nose 56 on the second arm 54 'and the boss 62 of the handle 18 on the first arm 52 allows the pivoting in the counterclockwise direction of a watch the indicator 50 toward the second operative position stable (fig. 4) under the action of the return spring. Le deuxième bras 54′ est en appui contre la deuxième butée 60, et l'apparition du voyant 54 hors de l'orifice 40, signale l'ouverture effective des contacts 14,16. The second arm 54 'is in abutment against the second stop 60, and the appearance of the indicator 54 out of the orifice 40, indicates the actual opening of the contacts 14,16.
  • La refermeture du disjoncteur s'opère par déplacement de la manette 18 à partir de la position 0 vers la position F. Au cours de cette opération de pivotement, le bossage 62 de la manette 18 pousse le premier bras 52 dans le sens des aiguilles d'une montre, et ramène automatiquement l'indicateur 50 vers la première position stable à l'encontre de la force de rappel du ressort. The reclosure of the circuit breaker takes place by moving the handle 18 from the position 0 to the position F. During this swiveling operation, the boss 62 of the handle 18 pushes the first arm 52 in the clockwise a watch, and automatically returns the indicator 50 to the first stable position against the spring restoring force.
  • On remarque que le voyant 54 peut occuper deux positions stables, dont l'une correspondant à l'état visible indique la séparation des contacts 14,16, et dont l'autre correspondant à l'état invisible, signale la fermeture normale ou soudée des contacts 14,16. It is noted that the indicator 54 can occupy two stable positions, one corresponding to the visible state indicates the separation of the contacts 14,16, and the other corresponding to the invisible state, indicates normal or welded closure of 14,16 contact. La fonction de visualisation est réalisée par une pièce distincte de la manette 18. De par sa coopération avec le nez 56 du levier support 28, l'indicateur 50 bistable est insensible à l'effort d'essai exercé sur la manette 18. L'indicateur 50 restera dans la première position inactive si la manette 18 est forcée vers la position O d'ouverture en cas de soudage des contacts. The view function is performed by a separate part of the joystick 18. By its cooperation with the nose 56 of the lever holder 28, the bistable indicator 50 is insensitive to the test effort exerted on the handle 18. The indicator 50 will remain in the first inactive position if the lever 18 is forced to the open position O in the event of welding of the contacts.
  • La variante de l'indicateur 150 illustrée aux figures 5 à 7 utilise un ressort 66 additionnel d'entraînement agencé entre le nez 56 du levier support 28 et le deuxième bras 154. Le ressort 66 est conformé en épingle à torsion positionnée sur un plot 68 du boîtier 12.Les extrémités du ressort 66 peuvent se déplacer dans des ouvertures 70,72 oblongues ménagées respectivement dans le deuxième bras 154, et la nez 56. Le redan 55 est supprimé, et le reste du mécanisme est identique à celui des figures 1 à 4. The variant of the indicator 150 illustrated in Figures 5-7 uses a spring additional drive 66 arranged between the nose 56 of the support lever 28 and the second arm 154. The spring 66 is shaped hairpin torsion positioned on a pad 68 12.The ends of the spring housing 66 can move in the oblong apertures 70,72 respectively in the second arm 154, and the nose 56. the recess 55 is removed, and the rest of the mechanism is identical to that of figures 1 4.
  • Le fonctionnement de l'indicateur 150 des figures 5 à 7 est similaire à celui décrit précédemment, avec la différence que le ressort 66 joue le rôle d'amplificateur de course, particulièrement recommandé dans un disjoncteur unipolaire et neutre, dans lequel les deux bras de contact de phase et de neutre sont légèrement décalés angulairement. The operation of the indicator 150 of Figures 5 to 7 is similar to that described above, with the difference that the spring 66 acts as a stroke amplifier, particularly recommended in a unipolar and neutral circuit breaker, wherein the two arms of phase and neutral contact are slightly angularly offset.
  • Sur les figures 8 et 9, les butées de fin de course 58,60 sont supprimées sur le boîtier 12. L'indicateur 250 comporte un premier bras 252 de signalisation, dont le voyant 54 est conformé en secteur circulaire ayant un diamètre voisin de celui de l'embase 80 de la manette 18. Le diamètre du deuxième bras 254 à redan 255 de commande est supérieur à celui du premier bras 252. Figures 8 and 9, the end stops 58,60 are deleted race on the housing 12. The indicator 250 includes a first arm 252 signaling, with the lamp 54 is shaped as a circular sector having a diameter close to that of the base 80 of the handle 18. the diameter of the second arm 254 in recess 255 of control is higher than the first arm 252.
  • En position O d'ouverture de la manette 18 et en cas de non soudage des montants 14,16 (figure 8), le voyant 54 est visible dans la deuxième position active, et le premier bras 252 est sollicité en butée contre le bossage 62 de l'embase 80 par le ressort de rappel 82 de la manette 18. In opening position O of the handle 18 and in case of welding of 14.16 amounts (Figure 8), the LED 54 is visible in the second active position, and the first arm 252 is biased into abutment against the boss 62 of the base 80 by the return spring 82 of the handle 18.
  • En cas de soudage des contacts (figure 9), le voyant 54 reste invisible en étant bloqué dans la première position inactive par l'action du nez 56 sur le redan 255, même lorsque la manette 18 est forcée vers la position O d'ouverture. In case of contact welding (Figure 9), the LED 54 remains invisible being blocked in the first inactive position by the action of the nose 56 on the step 255, even when the handle 18 is forced toward the open position O . Le deuxième bras 254 se trouve en appui contre une butée 86 de l'embase 80. The second arm 254 is in abutment against a stop 86 of the base 80.
  • En référence à la figure 10, le mécanisme 10 est équipé d'un dispositif de blocage de la manette 18 en cas de soudage des contacts 14, 16. Le crochet d'accrochage 32 est équipé d'une protubérance 144 venant en engagement contre une butée solidaire du boîtier 12 dans l'état fermé-soudé des contacts 14,16, pour stopper la manette 18 dans une position intermédiaire S prédéterminée, située entre les positions extrêmes F et O. Le dépassement de point mort de la genouillère 22 rend stable ladite position intermédiaire S de la manette 18. Le voyant 54 reste invisible dans cette position. Referring to Figure 10, the mechanism 10 is equipped with a locking device of the handle 18 in the case of welding of the contacts 14, 16. The attachment hook 32 has a projection 144 coming into engagement against a stop fixed to the housing 12 in the closed-welded state of the contacts 14,16, to stop the handle 18 in a predetermined intermediate position S, situated between the extreme positions F and O. the past dead center of the toggle joint 22 makes stable said intermediate position S of the handle 18. the indicator 54 is not visible in this position. Le blocage de la manette 18 dans la position S est opéré par l'engagement de la protubérance 144 contre la butée du boîtier 12, lequel encaisse l'effort exercé sur la manette 18 en cas d'actionnement forcé. The blocking of the lever 18 in the S position is operated by the engagement of the protrusion 144 against the stop of the housing 12, which collects the force exerted on the lever 18 in the event of forced actuation.

Claims (9)

  1. An operating mechanism for an electrical circuit breaker with an insulating case (12) housing a pair of stationary (16) and movable (14) contacts, said movable contact (14) being supported by a contact arm (13) actuated by the mechanism (10), which mechanism comprises a handle (18) pivotally mounted on a spindle (42) and movable in an orifice (40) of the case (12) between two extreme closed F and open O positions, a transmission rod (20) coupled to the handle (18) to form a toggle (22), a breakable mechanical link (30) between the rod (20) and a support lever (28) of the contact arm (13), a trip lever (36) to lock and unlock the mechanical link (30), and a mechanical indicator (50, 150, 250) of the state of the circuit breaker having a flag (54) designed to occupy an active position visible from outside in the open position o of the handle (18), characterized in that the indicator (50, 150, 250) comprises a bistable lever mounted with free rotation on the spindle (42) of the handle (18), and cooperating with a nose (56) of the support lever (28) designed to lock the flag (54) and make it invisible in a stable inactive position, when the handle (18) is actuated from the closed position F to the open position O in the event of welding of the contacts (14, 16).
  2. The operating mechanism according to claim 1, characterized in that moving from the inactive position to the active position of the bistable indicator (50, 150, 250) takes place after the nose (56) has been released by means of a return spring (82), simultaneously urging the handle (18) to the open position O.
  3. The operating mechanism according to claim 1 or 2, characterized in that the lever of the indicator (50, 150) comprises a first indicating arm (52, 252) on which the flag 54 is arranged, and a second operating arm (54′, 154, 254) cooperating with the nose (56), said first arm (52, 252) and second arm (54′, 154, 254) being angularly offset from one another by a predetermined angle, centred on the spindle (42) of the handle (18).
  4. The operating mechanism according to claim 3, characterized in that the handle (18) is provided with a boss (62) designed to act on the first arm (52) in the closing direction, to move the indicator (50, 150, 250) back to the inactive position.
  5. The operating mechanism according to claim 3 or 4, characterized in that the operating second arm (54′, 154, 254) is movable between two end-of-travel stops (58, 60, 62, 86) limiting the angular travel of the indicator (50, 150, 250).
  6. The operating mechanism according to one of the claims 3 to 5, characterized in that the second arm (54′, 254) of the indicator (50, 250) is equipped with a cheek (55, 255) coming up against the nose (56) in the event of welding of the contacts (14, 16).
  7. The operating mechanism according to one of the claims 3 to 5, characterized in that an additional drive spring (66) is fitted between the nose (56) and the second arm (154) of the indicator (150) to act as an angular travel amplifier.
  8. The operating mechanism according to claim 7, characterized in that the spring (66) is shaped as a torsion pin positioned on a fixed stud (68), and having its two ends housed in oblong openings (70, 72) arranged respectively in the second arm (154) and the nose (56).
  9. The operating mechanism according to one of the claims 1 to 8, characterized in that the mechanism (10) is equipped with a device for positive blocking of the handle (18) in an intermediate position S in case of welding of the contacts (14, 16), said position S being stable after the dead point of the toggle (22) has been passed.
EP19910420108 1990-04-09 1991-03-29 Driving mechanism for circuit breaker Expired - Lifetime EP0452230B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9004642A FR2660794B1 (en) 1990-04-09 1990-04-09 control mechanism of an electrical circuit breaker.
FR9004642 1990-04-09

Publications (2)

Publication Number Publication Date
EP0452230A1 EP0452230A1 (en) 1991-10-16
EP0452230B1 true EP0452230B1 (en) 1994-12-07

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EP19910420108 Expired - Lifetime EP0452230B1 (en) 1990-04-09 1991-03-29 Driving mechanism for circuit breaker

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EP (1) EP0452230B1 (en)
AT (1) AT115329T (en)
DE (2) DE69105591T2 (en)
ES (1) ES2067899T3 (en)
FR (1) FR2660794B1 (en)

Cited By (70)

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US6114641A (en) 1998-05-29 2000-09-05 General Electric Company Rotary contact assembly for high ampere-rated circuit breakers
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US6087913A (en) 1998-11-20 2000-07-11 General Electric Company Circuit breaker mechanism for a rotary contact system
US6037555A (en) 1999-01-05 2000-03-14 General Electric Company Rotary contact circuit breaker venting arrangement including current transformer
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Also Published As

Publication number Publication date
EP0452230A1 (en) 1991-10-16
AT115329T (en) 1994-12-15
ES2067899T3 (en) 1995-04-01
FR2660794B1 (en) 1996-07-26
FR2660794A1 (en) 1991-10-11
DE69105591D1 (en) 1995-01-19
DE69105591T2 (en) 1995-06-08

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