EP2801099B1 - Electrical power circuit breaker having an energy storage and a device for the improved indication of the operational state - Google Patents

Electrical power circuit breaker having an energy storage and a device for the improved indication of the operational state Download PDF

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Publication number
EP2801099B1
EP2801099B1 EP13706575.1A EP13706575A EP2801099B1 EP 2801099 B1 EP2801099 B1 EP 2801099B1 EP 13706575 A EP13706575 A EP 13706575A EP 2801099 B1 EP2801099 B1 EP 2801099B1
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EP
European Patent Office
Prior art keywords
cam
loading
circuit breaker
opening
closing
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EP13706575.1A
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German (de)
French (fr)
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EP2801099A1 (en
Inventor
Hubert ROELANDT
Frank EMEYRIAT
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP2801099A1 publication Critical patent/EP2801099A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3015—Charging means using cam devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device

Definitions

  • the document EP 2110835 describes a circuit breaker with a signaling device comprising an indicator lever.
  • Another known circuit breaker OFO opening-closing-opening mechanism of the kind mentioned, is described in the document EP 997919 of the plaintiff.
  • the mechanism comprises a toggle device associated with a switching bar and an opening spring, a closing spring energy storage device, means for indicating the state of the circuit breaker, and means for controlling closing and closing. opening of the poles.
  • the energy storage device is armed by means of a loading cam associated with a signaling cam, both said cams being wedged on a common arming shaft.
  • an axis of the driving element interferes with the curvilinear peripheral edge of the signaling cam.
  • This indicator light is arranged on a multi-armed indicating lever, and also makes it possible to indicate two other states, one corresponding to the unarmed position, and the other corresponding to a charged accumulator, but not in its "ready to close” state.
  • the indicator lever cooperates with a mechanical connection associated with the closing pawl for transmitting a manual closing command to the accumulator device, if and only if, the indicator light is in the "ready to close” state.
  • the dead point of the loading cam has been advanced by shifting the boss of the cam by a predetermined angle, for example by 10 °, so as to reduce the slope between the dead point and the end of the loading cam.
  • the signal indicator indicator lever indeed hits the opening latch with propagation of the shock on the release lever in conjunction with the rod of the release trigger.
  • the transmission of a mechanical shock on the auxiliary trip lever does not guarantee safely this second locking function by the release trigger. If the shock is greater than the holding force (of the order of 1.3N) of the release trigger, its rod falls to a withdrawal position, and causes the initialization of said trigger. The operator can then close the pole contacts by means of the closing push-button, while the fault is not acknowledged. If this fault persists, the device will not open any more, because the release trigger requires the receipt of a new trip command.
  • the object of the invention is to provide a multipole power circuit breaker, equipped with an improved arming mechanism avoiding a on the other hand any over-rotation movement of the arming shaft, and on the other hand preventing any closing of the poles in the event of an unacknowledged electrical fault.
  • the circuit breaker according to the invention is characterized in that the signaling cam is provided with a single ramp for progressively positioning the indicator lever up to the notch guaranteeing a locking of the opening lock in the position triggered by the trigger Auxiliary transmission.
  • the drop height of the indicator lever is thus reduced when it is inserted into the notch, so as not to affect the resistance of the release trigger MX when the latter receives an order of opening after an unpaid defect. Any attempt to reclose contacts is excluded as long as the defect has not been acknowledged.
  • the loading cam and the signaling cam are mechanically secured to each other by spacers, and mounted axially on the arming shaft, which is advantageously grooved in the axial direction.
  • Each cam has a central orifice of circular shape, provided with a radial index so as to constitute a referential radial plane passing through said aligned indexes.
  • the notch of the signaling cam is shaped according to a U, delimited by a first right edge, and a second inclined edge, the first right edge being offset from the reference plane by an angle ⁇ of between 10 ° and 20 °, and the upper end of the second side joining the end portion of the progressive ramp being separated from the reference plane by an angle ⁇ between 20 ° and 40 °.
  • the loading cam of the cocking device has a tipping point offset from the cam end by an angle of between 30 ° and 45 °, so as to avoid any over-rotation movement. of the arming shaft and the loading cam at the time of the closing phase of the poles.
  • a low voltage multipole electrical circuit breaker comprises a pair of contacts 10, 11 separable in each pole, the movable contact element 11 being connected by a crank 12 to a common switching rod 13.
  • the latter is formed by an isolating shaft driving in limited rotation the movable contact elements 11 of all the poles, between a closed position and an open position, and vice versa.
  • the circuit breaker is actuated by a control mechanism 14, which is carried by a frame 15 with two parallel flanges 16, 17.
  • the control mechanism 14 comprises a toggle device 18 associated with an opening spring 19, a trigger hook 20 is pivoted, and a mechanical energy accumulator 21 controlled by a cocking device 22.
  • the mechanism 14 is intended to perform successive movements OFO opening-closing-opening poles, without requiring a new accumulation of energy in the accumulator 21.
  • the toggle device 18 comprises a first link 23 articulated to a second link 24 by a pivot axis, the first connecting rod 23 being coupled to the switching rod 13, and the second connecting rod 24 being articulated to the trigger hook 20.
  • the spring 24 opening 19 is hooked to the pivot axis of the two links 23, 24 to bias the folding of the toggle device 18 and the opening of the contacts 10, 11 during an automatic trigger or a manual opening command .
  • This opening spring 19, consisting for example of a traction type spring, is automatically armed during a closing operation of the contacts.
  • the toggle device 18 can thus occupy either a folded position corresponding to the open position of the switching bar 13, or an extended position corresponding to the closed position of said bar.
  • the trigger hook 20 cooperates with a opening pawl 25 controlled by an opening lock 26, which can occupy a locked position or an unlocked position.
  • the energy accumulator 21 encloses at least one telescopic compression support of the closing spring 27, so as to be loaded independently of the position of the contacts 10, 11.
  • the arming device 22 is composed of a loading cam 28 keyed on a main shaft 29, which can be actuated by a manual reset handle 30 in conjunction with a ratchet and ratchet system. The resetting can also be operated electrically by means of a geared motor (not shown) wedged on the arming shaft 29.
  • a pivoting driving element 31 serves as a transmission means between the energy accumulator 21 and the second link 24 of the toggle device 18 for driving the switching bar 13 and the contacts 10, 11 to the closed position during the controlled expansion of the closing spring 27.
  • the driving element 31 is pivotally mounted on an axis 32 , and is provided with a roller 33 shifted angularly with respect to the axis 32, and cooperating with the peripheral edge of the loading cam 28.
  • the indicator lever 41 is equipped with a first arm 44 whose end is adapted to engage in the notch 43 of the signaling cam 42 when the arming shaft 29 reaches the armed position of the accumulator. 21.
  • the indicator lever 41 is provided with a second arm intended to interfere with the switching bar 13, as well as a third arm 46 cooperating with the opening lock 26.
  • the combination of these three parameters defines a "ready to close” state which is indicated on the front face by a mechanical and / or optical indicator.
  • a mechanical connection between the closing push-button 36 and the closing lock 35 makes it possible, in this "ready to close” state, to transmit a closing command via the closing push-button 36 to release the loading cam. 28 by allowing the relaxation of the spring 27 and the driving of the switching bar 13 and the contacts 10, 11 to the closed position.
  • the signaling cam 42 is shown in dotted lines for a standard embodiment of the prior art, and in solid lines for the version according to the present invention.
  • the indicator lever 41 is illustrated in several positions during the arming phase.
  • the signaling cam 42 (in dotted lines) has a first curvilinear loading ramp R1 up to the boss 48, and a second ramp R2 with an inverted slope between the boss 48 and the notch 43 for receiving the indicator lever 41 at the end of the arming stroke.
  • the overspeed due to the advancement of the tilting dead point of the loading cam 28 causes a take-off effect of the indicator lever 41 to pass on the boss 48.
  • the indicator lever 41 which carries the second seeing 39, is symbolized by a V on the figure 9 .
  • This takeoff was detected by means of an ultra-fast vision system, with a maximum fall height before falling back into the notch 43 of the signaling cam 42.
  • V1 represents the position of the indicator before the tilting, and V2 its position. in the notch 43 indicating the charged state of the accumulator 21.
  • the mechanical shock from this too high drop height is thus transmitted to the MX release trigger by the third arm 46 of the indicator lever 41, which acts on the aperture lock 26 and an auxiliary lever 50 causing the rod 49 of the MX release trigger to drop.
  • the mechanical locking function of the MX release trigger is no longer guaranteed in complete safety.
  • the signaling cam 42 (in continuous lines on figure 9 , and figure 10 ) has a single ramp R3 allowing a progressive positioning of the indicator lever 41 to the notch 43.
  • V3 indicates the position of the indicator before tilting, with removal of the second inverted R2 ramp which avoids the boss 48 takeoff.
  • the height of fall of the indicator lever 41 is thus reduced by a distance d when it is introduced into the notch 43.
  • the holding of the MX release trigger is not affected, and its rod remains in the protruding position so as to guarantee the mechanical locking function preventing the contacts from reclosing without having acknowledged the fault.
  • the loading cam 28 and the signaling cam 42 are mechanically secured to each other by spacers 51.
  • the set of two cams 28, 42 is engaged axially and fixed on the arming shaft 29, which is advantageously grooved in the axial direction.
  • Each cam 28, 42 has for this purpose a central orifice of circular shape, with a radial index 52.
  • the orifices of the two cams 28, 42 are aligned axially with their indexes 52, which are positioned in the groove of the loading shaft 29.
  • the radial direction passing through the aligned indexes 52 of the two cams 28, 42 determines a reference plane of trace 53 radial.
  • the notch 43 of the signaling cam 42 is shaped according to a U, delimited by a first right sidewall 54, a second inclined sidewall 55, and a closed bottom connecting the two sidewalls 54, 55.
  • the OFO control mechanism 14 of the circuit breaker makes it possible to safely ensure the locking function by the MX transmission trigger having received an opening command at the occurrence of a fault.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Breakers (AREA)

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention est relative à un disjoncteur électrique multipolaire ayant une paire de contacts séparables par pôle, et un mécanisme de commande comprenant :

  • un dispositif à genouillère associé à un barreau de commutation, et à un crochet de déclenchement,
  • un ressort d'ouverture armé automatiquement lors d'une manoeuvre de fermeture du dispositif à genouillère,
  • un accumulateur d'énergie à ressort de fermeture piloté par un dispositif d'armement composé d'une came de chargement calée sur un arbre d'armement, et d'un élément entraîneur servant de moyen de transmission entre l'accumulateur d'énergie et le dispositif à genouillère pour assurer l'entraînement du barreau de commutation et des contacts mobiles vers la position de fermeture lors de la détente du ressort de fermeture,
  • un cliquet et verrou de fermeture apte à verrouiller l'accumulateur d'énergie dans un état chargé,
  • un cliquet et verrou d'ouverture apte à coopérer avec le crochet de déclenchement, et avec un déclencheur à émission auxiliaire,
  • et un dispositif de signalisation comportant un levier indicateur à voyant coopérant avec une came de signalisation pour indiquer un état armé, désarmé et prêt à fermer du mécanisme, ladite came de signalisation étant montée sur l'arbre d'armement à proximité de la came de chargement, et étant dotée d'une encoche de réception du levier indicateur lorsque le mécanisme se trouve dans l'état chargé.
The invention relates to a multipole electric circuit breaker having a pair of separable contacts per pole, and a control mechanism comprising:
  • a toggle device associated with a switching bar, and a trigger hook,
  • an opening spring automatically cocked during a closing operation of the toggle device,
  • a closing spring energy accumulator controlled by an arming device consisting of a charging cam wedged on an arming shaft, and a driving element serving as a transmission medium between the energy accumulator and the toggle device for driving the switching bar and the movable contacts to the closed position when the closing spring is released,
  • a pawl and locking latch adapted to lock the energy accumulator in a loaded state,
  • a ratchet and opening latch adapted to cooperate with the trigger hook, and with an auxiliary emission trigger,
  • and a signaling device comprising a indicator indicator lever cooperating with a signaling cam to indicate an armed, disarmed and ready-to-close state of the mechanism, said signaling cam being mounted on the arming shaft in the vicinity of the signaling cam. loading, and being provided with a notch for receiving the indicating lever when the mechanism is in the loaded state.

État de la techniqueState of the art

Le document EP 2110835 décrit un disjoncteur avec un dispositif de signalisation comportant un levier indicateur. Un autre disjoncteur connu à mécanisme ouverture-fermeture-ouverture OFO du genre mentionné, est décrit dans le document EP 997919 de la demanderesse. Le mécanisme comporte un dispositif à genouillère associé à un barreau de commutation et un ressort d'ouverture, un dispositif accumulateur d'énergie à ressort de fermeture, des moyens indicateurs de l'état du disjoncteur, et des moyens de commande de fermeture et d'ouverture des pôles. Le dispositif accumulateur d'énergie est armé au moyen d'une came de chargement associée à une came de signalisation, lesdites cames étant calées toutes les deux sur un arbre d'armement commun.The document EP 2110835 describes a circuit breaker with a signaling device comprising an indicator lever. Another known circuit breaker OFO opening-closing-opening mechanism of the kind mentioned, is described in the document EP 997919 of the plaintiff. The mechanism comprises a toggle device associated with a switching bar and an opening spring, a closing spring energy storage device, means for indicating the state of the circuit breaker, and means for controlling closing and closing. opening of the poles. The energy storage device is armed by means of a loading cam associated with a signaling cam, both said cams being wedged on a common arming shaft.

Dans les deux états ouvert-armé et ouvert-désarmé du mécanisme, un verrou d'ouverture occupe :

  • soit une position de repos en étant soumis à un seul ressort de rappel,
  • soit une position maintenue de déclenchement en étant sollicité en permanence par un déclencheur auxiliaire détectant un défaut électrique sur le réseau, ou par le bouton-poussoir d'ouverture qui est verrouillé.
In both the open-armed and open-disarmed states of the mechanism, an opening lock occupies:
  • a rest position subject to a single return spring,
  • either a triggered hold position being constantly solicited by an auxiliary trigger detecting an electrical fault on the network, or by the opening pushbutton which is locked.

Lorsque le dispositif d'armement n'est pas armé, un axe de l'élément entraîneur interfère avec le chant périphérique curviligne de la came de signalisation.When the arming device is not armed, an axis of the driving element interferes with the curvilinear peripheral edge of the signaling cam.

Un voyant de signalisation de l'état « prêt à fermer » permet la refermeture du disjoncteur à la condition que :

  • la came de chargement se trouve en position armée,
  • le barreau est en position d'ouverture
  • et le verrou d'ouverture en position de repos.
A "ready to close" status indicator light allows the circuit breaker to close again provided that:
  • the loading cam is in the armed position,
  • the bar is in the open position
  • and the opening lock in the rest position.

Ce voyant de signalisation est agencé sur un levier indicateur à bras multiple, et permet d'indiquer également deux autres états, l'un correspondant à la position non armée, et l'autre correspondant à un accumulateur chargé, mais pas dans son état « prêt à fermer ».This indicator light is arranged on a multi-armed indicating lever, and also makes it possible to indicate two other states, one corresponding to the unarmed position, and the other corresponding to a charged accumulator, but not in its "ready to close" state.

Le levier indicateur coopère avec une liaison mécanique associée au cliquet de fermeture pour transmettre un ordre de fermeture manuelle au dispositif accumulateur, si et seulement si, le voyant de signalisation se trouve dans l'état « prêt à fermer ». Lorsque l'ordre de fermeture est donné, l'énergie de l'accumulateur est libérée, entraînant la détente brusque du ressort de fermeture, et la refermeture des contacts de tous les pôles.The indicator lever cooperates with a mechanical connection associated with the closing pawl for transmitting a manual closing command to the accumulator device, if and only if, the indicator light is in the "ready to close" state. When the closing order is given, the energy of the accumulator is released, resulting in the sudden expansion of the closing spring, and the closing of the contacts of all the poles.

Pour éviter un mouvement de sur-rotation de l'arbre d'armement et de la came de chargement au moment de cette phase de refermeture, on a déjà proposé de modifier le profil de la came de chargement. Le point mort de la came de chargement a été avancé en décalant le bossage de la came d'un angle prédéterminé, par exemple de 10°, de manière à diminuer la pente entre le point mort et le bout de la came de chargement.To avoid an over-rotation movement of the arming shaft and the loading cam at the time of this re-closing phase, it has already been proposed to modify the profile of the loading cam. The dead point of the loading cam has been advanced by shifting the boss of the cam by a predetermined angle, for example by 10 °, so as to reduce the slope between the dead point and the end of the loading cam.

Ce décalage angulaire du point mort provoque un basculement avancé du mécanisme, mais augmente néanmoins la distance périphérique entre le bossage au point mort et le bout de la came de chargement. L'effet de sur-rotation est évité, mais la vitesse de rotation de l'arbre d'armement est plus importante en certains points. La came de signalisation étant indexée à la came de chargement, on a constaté qu'en fin de chargement de l'accumulateur, le basculement du levier indicateur dans l'encoche de la came de signalisation était susceptible de provoquer un choc mécanique sur un levier de déclenchement du/des déclencheur(s) auxiliaire(s).This angular offset of the neutral point causes an advanced tilting of the mechanism, but nevertheless increases the peripheral distance between the neutral boss and the end of the loading cam. The effect of over-rotation is avoided, but the speed of rotation of the arming shaft is greater at certain points. The signaling cam being indexed to the loading cam, it was found that at the end of the charging of the accumulator, the tilting of the indicator lever in the notch of the signaling cam was likely to cause a mechanical shock on a lever triggering the auxiliary trigger (s).

En fin de réarmement manuel de l'accumulateur, le levier indicateur du voyant de signalisation percute en effet le verrou d'ouverture avec propagation du choc sur le levier de déclenchement en liaison avec la tige du déclencheur à émission.At the end of manual reset of the accumulator, the signal indicator indicator lever indeed hits the opening latch with propagation of the shock on the release lever in conjunction with the rod of the release trigger.

Le déclencheur à émission est utilisé normalement pour remplir deux fonctions :

  • déclenchement automatique du verrou et cliquet d'ouverture pour provoquer la séparation des contacts des pôles ;
  • maintien de l'ordre d'ouverture lors de l'apparition d'un défaut électrique, assurant un verrouillage mécanique qui empêche toute manoeuvre de fermeture des pôles. Le verrouillage est assuré en maintenant la tige du déclencheur à émission en position de saillie, aussi longtemps que le défaut persiste. Par contre, l'opérateur peut réarmer manuellement l'accumulateur d'énergie, mais ne peut pas fermer les contacts sans avoir acquitté le défaut.
The send trigger is normally used to perform two functions:
  • automatic triggering of the latch and opening pawl to cause the separation of the pole contacts;
  • maintenance of the opening order when an electrical fault occurs, ensuring a mechanical lock which prevents any closing maneuver of the poles. Locking is ensured by keeping the release trigger rod in the protruding position, as long as the fault persists. On the other hand, the operator can manually reset the energy accumulator, but can not close the contacts without acknowledging the fault.

Or la transmission d'un choc mécanique sur le levier de déclenchement auxiliaire ne permet pas de garantir en toute sécurité cette deuxième fonction de verrouillage par le déclencheur à émission. Si le choc est supérieur à l'effort de tenue (de l'ordre de 1,3N) du déclencheur à émission, sa tige retombe vers une position de retrait, et entraîne l'initialisation dudit déclencheur. L'opérateur peut alors fermer les contacts des pôles au moyen du bouton-poussoir de fermeture, alors que le défaut n'est pas acquitté. Si ce défaut persiste, l'appareil n'ouvre plus, car le déclencheur à émission nécessite la réception d'un nouvel ordre de déclenchement.Or the transmission of a mechanical shock on the auxiliary trip lever does not guarantee safely this second locking function by the release trigger. If the shock is greater than the holding force (of the order of 1.3N) of the release trigger, its rod falls to a withdrawal position, and causes the initialization of said trigger. The operator can then close the pole contacts by means of the closing push-button, while the fault is not acknowledged. If this fault persists, the device will not open any more, because the release trigger requires the receipt of a new trip command.

Pour remédier à ce problème de non garantie du verrouillage par le déclencheur à émission, des solutions pourraient consister à augmenter l'effort de maintien du déclencheur à émission MX, et/ou à absorber les chocs mécaniques au moyen d'amortisseurs en caoutchouc. Mais ces solutions sont compliquées et difficiles à mettre en oeuvre.To remedy this problem of non-guarantee of the locking by the release trigger, solutions could be to increase the effort of maintaining the release MX release, and / or to absorb mechanical shocks by means of rubber dampers. But these solutions are complicated and difficult to implement.

Objet de l'inventionObject of the invention

L'objet de l'invention consiste à réaliser un disjoncteur multipolaire de puissance, équipé d'un mécanisme d'armement perfectionné évitant d'une part tout mouvement de sur-rotation de l'arbre d'armement, et empêchant d'autre part toute fermeture des pôles en cas de défaut électrique non acquitté.The object of the invention is to provide a multipole power circuit breaker, equipped with an improved arming mechanism avoiding a on the other hand any over-rotation movement of the arming shaft, and on the other hand preventing any closing of the poles in the event of an unacknowledged electrical fault.

Le disjoncteur selon l'invention est caractérisé en ce que la came de signalisation est dotée d'une seule rampe de mise en position progressive du levier indicateur jusqu'à l'encoche garantissant un verrouillage du verrou d'ouverture en position déclenchée par le déclencheur à émission auxiliaire. En fin d'armement manuel de l'accumulateur, la hauteur de chute du levier indicateur est ainsi réduite lors de son introduction dans l'encoche, de manière à ne pas affecter la tenue du déclencheur à émission MX lorsque ce dernier reçoit un ordre d'ouverture suite à un défaut non acquitté. Toute tentative de refermeture des contacts est exclue aussi longtemps que le défaut n'a pas été acquitté.The circuit breaker according to the invention is characterized in that the signaling cam is provided with a single ramp for progressively positioning the indicator lever up to the notch guaranteeing a locking of the opening lock in the position triggered by the trigger Auxiliary transmission. At the end of manual arming of the accumulator, the drop height of the indicator lever is thus reduced when it is inserted into the notch, so as not to affect the resistance of the release trigger MX when the latter receives an order of opening after an unpaid defect. Any attempt to reclose contacts is excluded as long as the defect has not been acknowledged.

Selon une caractéristique de l'invention, la came de chargement et la came de signalisation sont solidarisées mécaniquement entre elles par des entretoises, et montées axialement sur l'arbre d'armement, lequel est avantageusement rainuré dans la direction axiale. Chaque came comporte un orifice central de forme circulaire, doté d'un index radial de manière à constituer un plan radial référentiel passant par lesdits index alignés.According to a characteristic of the invention, the loading cam and the signaling cam are mechanically secured to each other by spacers, and mounted axially on the arming shaft, which is advantageously grooved in the axial direction. Each cam has a central orifice of circular shape, provided with a radial index so as to constitute a referential radial plane passing through said aligned indexes.

Selon l'invention, l'encoche de la came de signalisation est conformée selon un U, délimité par un premier flanc droit, et un deuxième flanc incliné, le premier flanc droit étant décalé du plan référentiel par un angle ∝ compris entre 10° et 20°, et l'extrémité supérieure du deuxième flanc rejoignant la partie terminale de la rampe progressive étant séparée du plan référentiel par un angle β compris entre 20° et 40°.According to the invention, the notch of the signaling cam is shaped according to a U, delimited by a first right edge, and a second inclined edge, the first right edge being offset from the reference plane by an angle α of between 10 ° and 20 °, and the upper end of the second side joining the end portion of the progressive ramp being separated from the reference plane by an angle β between 20 ° and 40 °.

Préférentiellement, la came de chargement du dispositif d'armement présente un point de mort de basculement décalé du bout de came par un angle compris entre 30° et 45°, de manière à éviter tout mouvement de sur-rotation de l'arbre d'armement et de la came de chargement au moment de la phase de refermeture des pôles.Preferably, the loading cam of the cocking device has a tipping point offset from the cam end by an angle of between 30 ° and 45 °, so as to avoid any over-rotation movement. of the arming shaft and the loading cam at the time of the closing phase of the poles.

Description sommaire des dessinsBrief description of the drawings

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

  • la figure 1 est une vue schématique en coupe d'un pôle du disjoncteur et de son mécanisme de commande, le disjoncteur étant montré dans l'état ouvert désarmé ;
  • les figures 2 à 4 montrent des vues du mécanisme respectivement en position ouvert-armé, ouvert désarmé, et fermé ;
  • la figure 5 représente une vue de face du mécanisme équipé du bouton-poussoir de fermeture, du bouton-poussoir d'ouverture, du premier voyant indicateur de l'état ouvert ou fermé des contacts, du deuxième voyant de l'état armé-déchargé de l'accumulateur d'énergie, et du déclencheur auxiliaire à émission ;
  • la figure 6 est une vue schématique du mécanisme du côté de la came de chargement ;
  • la figure 7 est une vue schématique du mécanisme du côté de la came de signalisation ;
  • la figure 8 représente une vue partielle de la cinématique entre la tige du déclencheur à émission , le levier indicateur, et l'ensemble verrou et cliquet d'ouverture ;
  • la figure 9 montre le profil de la came de signalisation selon l'invention (en traits continus), et l'art antérieur (en traits pointillés) ;
  • la figure 10 représente l'ensemble came de chargement et came de signalisation montées sur l'arbre de chargement.
Other advantages and features will emerge more clearly from the following description of an embodiment of the invention given by way of nonlimiting example and represented in the accompanying drawings, in which:
  • the figure 1 is a schematic sectional view of a pole of the circuit breaker and its control mechanism, the circuit breaker being shown in the open disarmed state;
  • the Figures 2 to 4 show views of the mechanism respectively in open-armed, open disarmed, and closed position;
  • the figure 5 represents a front view of the mechanism equipped with the closing push-button, the opening push-button, the first indicator of the open or closed state of the contacts, the second indicator of the armed-unloaded state of the accumulator of energy, and auxiliary trigger to emission;
  • the figure 6 is a schematic view of the mechanism on the side of the loading cam;
  • the figure 7 is a schematic view of the mechanism on the side of the signaling cam;
  • the figure 8 represents a partial view of the kinematics between the release trigger rod, the indicator lever, and the latch assembly and opening pawl;
  • the figure 9 shows the profile of the signaling cam according to the invention (in solid lines), and the prior art (in dotted lines);
  • the figure 10 represents the loading cam assembly and signaling cam mounted on the loading shaft.

Description détaillée de l'inventionDetailed description of the invention

Sur les figures 1 à 8, un disjoncteur électrique multipolaire à basse tension, comporte une paire de contacts 10, 11 séparables dans chaque pôle, l'élément de contact 11 mobile étant relié par une manivelle 12 à un barreau de commutation 13 commun. Ce dernier est formé par un arbre isolant entraînant en rotation limitée les éléments de contacts mobiles 11 de tous les pôles, entre une position de fermeture et une position d'ouverture, et vice versa.On the Figures 1 to 8 , a low voltage multipole electrical circuit breaker comprises a pair of contacts 10, 11 separable in each pole, the movable contact element 11 being connected by a crank 12 to a common switching rod 13. The latter is formed by an isolating shaft driving in limited rotation the movable contact elements 11 of all the poles, between a closed position and an open position, and vice versa.

Le disjoncteur est actionné par un mécanisme 14 de commande, lequel est porté par un châssis 15 à deux flasques parallèles 16, 17. Le mécanisme 14 de commande comprend un dispositif à genouillère 18 associé à un ressort d'ouverture 19, un crochet de déclenchement 20 pivotant, et un accumulateur d'énergie 21 mécanique piloté par un dispositif d'armement 22. Le mécanisme 14 est destiné à effectuer des mouvements successifs OFO ouverture-fermeture-ouverture des pôles, sans nécessiter une nouvelle accumulation d'énergie dans l'accumulateur 21.The circuit breaker is actuated by a control mechanism 14, which is carried by a frame 15 with two parallel flanges 16, 17. The control mechanism 14 comprises a toggle device 18 associated with an opening spring 19, a trigger hook 20 is pivoted, and a mechanical energy accumulator 21 controlled by a cocking device 22. The mechanism 14 is intended to perform successive movements OFO opening-closing-opening poles, without requiring a new accumulation of energy in the accumulator 21.

Le dispositif à genouillère 18 comporte une première biellette 23 articulée à une deuxième biellette 24 par un axe de pivotement, la première biellette 23 étant accouplée au barreau de commutation 13, et la deuxième biellette 24 étant articulée au crochet de déclenchement 20. Le ressort d'ouverture 19 est accroché à l'axe de pivotement des deux biellettes 23, 24 pour solliciter le repliement du dispositif à genouillère 18 et l'ouverture des contacts 10, 11 lors d'un déclenchement automatique ou d'une commande d'ouverture manuelle. Ce ressort d'ouverture 19, constitué par exemple par un ressort du type traction, est automatiquement armé lors d'une manoeuvre de fermeture des contacts. Le dispositif à genouillère 18 peut ainsi occuper soit une position repliée correspondant à la position d'ouverture du barreau de commutation 13, soit une position déployée correspondant à la position de fermeture dudit barreau. Le crochet de déclenchement 20 coopère avec un cliquet d'ouverture 25 piloté par un verrou d'ouverture 26, lequel peut occuper une position verrouillée ou une position déverrouillée.The toggle device 18 comprises a first link 23 articulated to a second link 24 by a pivot axis, the first connecting rod 23 being coupled to the switching rod 13, and the second connecting rod 24 being articulated to the trigger hook 20. The spring 24 opening 19 is hooked to the pivot axis of the two links 23, 24 to bias the folding of the toggle device 18 and the opening of the contacts 10, 11 during an automatic trigger or a manual opening command . This opening spring 19, consisting for example of a traction type spring, is automatically armed during a closing operation of the contacts. The toggle device 18 can thus occupy either a folded position corresponding to the open position of the switching bar 13, or an extended position corresponding to the closed position of said bar. The trigger hook 20 cooperates with a opening pawl 25 controlled by an opening lock 26, which can occupy a locked position or an unlocked position.

L'accumulateur d'énergie 21 renferme au moins un support téléscopique de compression du ressort de fermeture 27, de manière à être chargé indépendamment de la position des contacts 10, 11. Le dispositif d'armement 22 est composé d'une came de chargement 28 clavetée sur un arbre d'armement 29 principal, lequel peut être actionné par une poignée de réarmement 30 manuel en liaison avec un système à cliquet et roue à rochet. Le réarmement peut aussi être opéré électriquement au moyen d'un motoréducteur (non représenté) calé sur l'arbre d'armement 29. Un élément entraîneur 31 pivotant sert de moyen de transmission entre l'accumulateur d'énergie 21 et la deuxième biellette 24 du dispositif à genouillère 18 pour assurer l'entraînement du barreau de commutation 13 et des contacts 10, 11 vers la position de fermeture lors de la détente contrôlée du ressort de fermeture 27. L'élément entraîneur 31 est monté à pivotement sur un axe 32, et est doté d'un galet 33 décalé angulairement par rapport à l'axe 32, et coopérant avec le chant périphérique de la came de chargement 28.The energy accumulator 21 encloses at least one telescopic compression support of the closing spring 27, so as to be loaded independently of the position of the contacts 10, 11. The arming device 22 is composed of a loading cam 28 keyed on a main shaft 29, which can be actuated by a manual reset handle 30 in conjunction with a ratchet and ratchet system. The resetting can also be operated electrically by means of a geared motor (not shown) wedged on the arming shaft 29. A pivoting driving element 31 serves as a transmission means between the energy accumulator 21 and the second link 24 of the toggle device 18 for driving the switching bar 13 and the contacts 10, 11 to the closed position during the controlled expansion of the closing spring 27. The driving element 31 is pivotally mounted on an axis 32 , and is provided with a roller 33 shifted angularly with respect to the axis 32, and cooperating with the peripheral edge of the loading cam 28.

Le mécanisme de commande 14 comporte en plus :

  • un cliquet de fermeture 34 piloté par un verrou de fermeture 35. Dans la position armée de compression du ressort de fermeture 27, la came de chargement 28 est bloquée en rotation par le cliquet de fermeture 34, lui-même verrouillé en position par son verrou 35.
  • un bouton-poussoir de fermeture 36,
  • un bouton poussoir d'ouverture 37,
  • un premier voyant 38 de signalisation de l'état ouvert ou fermé des contacts 10, 11,
  • un deuxième voyant 39 indicateur de l'état armé ou déchargé de l'accumulateur d'énergie 21. Le deuxième voyant 39 est visible à travers une fenêtre 40 située sur la face avant du disjoncteur, et est agencé sur un levier indicateur 41 pivotant pourvu de plusieurs bras ;
  • un déclencheur auxiliaire MX à émission pour la commande de déclenchement à distance,
  • et une came de signalisation 42 de l'état du disjoncteur, laquelle est montée sur l'arbre d'armement 29 à proximité de la came de chargement 28, et comportant une encoche 43.
The control mechanism 14 further comprises:
  • a closing pawl 34 controlled by a closing latch 35. In the compression-armed position of the closing spring 27, the loading cam 28 is locked in rotation by the locking pawl 34, itself locked in position by its latch 35.
  • a push-button closure 36,
  • a push button opening 37,
  • a first indicator light 38 for the open or closed state of the contacts 10, 11,
  • a second indicator 39 indicator of the armed or unloaded state of the energy accumulator 21. The second indicator 39 is visible through a window 40 located on the front face of the circuit breaker, and is arranged on a pivoting indicator lever 41 provided several arms;
  • an auxiliary trigger MX to send for the remote trigger command,
  • and a signaling cam 42 of the state of the circuit breaker, which is mounted on the arming shaft 29 near the charging cam 28, and having a notch 43.

Le levier indicateur 41 est équipé d'un premier bras 44 dont l'extrémité est apte à s'engager dans l'encoche 43 de la came de signalisation 42 lorsque l'arbre d'armement 29 atteint la position armée de l'accumulateur d'énergie 21. Le levier indicateur 41 est pourvu d'un deuxième bras destiné à interférer avec le barreau de commutation 13, ainsi que d'un troisième bras 46 coopérant avec le verrou d'ouverture 26.The indicator lever 41 is equipped with a first arm 44 whose end is adapted to engage in the notch 43 of the signaling cam 42 when the arming shaft 29 reaches the armed position of the accumulator. 21. The indicator lever 41 is provided with a second arm intended to interfere with the switching bar 13, as well as a third arm 46 cooperating with the opening lock 26.

Le mécanisme de commande 14 OFO du disjoncteur peut occuper différents états de fonctionnement, à savoir un état fermé, un état ouvert désarmé, et un état ouvert armé. Trois conditions sont obligatoires pour pouvoir refermer les contacts 10, 11 des pôles:

  • l'accumulateur d'énergie 21 doit se trouver dans la position armée avec le ressort de fermeture 27 comprimé ;
  • le barreau de commutation doit être en position d'ouverture ;
  • et le verrou d'ouverture 26 doit occuper une position inactive de repos.
The OFO control mechanism 14 of the circuit breaker can occupy different operating states, namely a closed state, an open state disarmed, and an armed open state. Three conditions are required to be able to close the contacts 10, 11 of the poles:
  • the energy accumulator 21 must be in the armed position with the closing spring 27 compressed;
  • the switching bar must be in the open position;
  • and the opening lock 26 must occupy an idle rest position.

La combinaison de ces trois paramètres définit un état « prêt à fermer » qui est signalé en face avant par un voyant mécanique et/ou optique. Une liaison mécanique entre le bouton-poussoir de fermeture 36 et le verrou de fermeture 35 permet dans cet état « prêt à fermer », de transmettre un ordre de fermeture par l'intermédiaire du bouton-poussoir de fermeture 36 pour libérer la came de chargement 28 en autorisant la détente du ressort 27 et l'entraînement du barreau de commutation 13 et des contacts 10, 11 vers la position de fermeture.The combination of these three parameters defines a "ready to close" state which is indicated on the front face by a mechanical and / or optical indicator. A mechanical connection between the closing push-button 36 and the closing lock 35 makes it possible, in this "ready to close" state, to transmit a closing command via the closing push-button 36 to release the loading cam. 28 by allowing the relaxation of the spring 27 and the driving of the switching bar 13 and the contacts 10, 11 to the closed position.

Sur les figures 7, 9, la came de signalisation 42 est représentée en traits pointillés pour une réalisation standard de l'art antérieur, et en traits continus pour la version selon la présente invention. Sur la figure 9, le levier indicateur 41 est illustré selon plusieurs positions au cours de la phase d'armement. Selon l'art antérieur, la came de signalisation 42 (en traits pointillés) est dotée d'une première rampe R1 curviligne de chargement jusqu'au bossage 48, et d'une deuxième rampe R2 à pente inversée entre le bossage 48 et l'encoche 43 de réception du levier indicateur 41 en fin de course d'armement. Lors de la phase de réarmement, la survitesse due à l'avancement du point mort de basculement de la came de chargement 28, provoque un effet de décollage du levier indicateur 41 au passage sur le bossage 48. Le levier indicateur 41 qui porte le deuxième voyant 39, est symbolisé par un V sur la figure 9. On a détecté ce décollage au moyen d'un système de vision ultrarapide, avec une hauteur de chute maximale avant de retomber dans l'encoche 43 de la came de signalisation 42. V1 représente la position du voyant avant le basculement, et V2 sa position d'arrivée dans l'encoche 43 indiquant l'état chargé de l'accumulateur 21. Le choc mécanique issu de cette hauteur de chute trop importante, est ainsi transmis au déclencheur à émission MX par le troisième bras 46 du levier indicateur 41, lequel agit sur le verrou d'ouverture 26 et un levier auxiliaire 50 en provoquant la retombée de la tige 49 du déclencheur à émission MX. La fonction de verrouillage mécanique par le déclencheur à émission MX n'est plus garantie en toute sécurité.On the figures 7 , 9 , the signaling cam 42 is shown in dotted lines for a standard embodiment of the prior art, and in solid lines for the version according to the present invention. On the figure 9 , the indicator lever 41 is illustrated in several positions during the arming phase. According to the prior art, the signaling cam 42 (in dotted lines) has a first curvilinear loading ramp R1 up to the boss 48, and a second ramp R2 with an inverted slope between the boss 48 and the notch 43 for receiving the indicator lever 41 at the end of the arming stroke. During the resetting phase, the overspeed due to the advancement of the tilting dead point of the loading cam 28, causes a take-off effect of the indicator lever 41 to pass on the boss 48. The indicator lever 41 which carries the second seeing 39, is symbolized by a V on the figure 9 . This takeoff was detected by means of an ultra-fast vision system, with a maximum fall height before falling back into the notch 43 of the signaling cam 42. V1 represents the position of the indicator before the tilting, and V2 its position. in the notch 43 indicating the charged state of the accumulator 21. The mechanical shock from this too high drop height, is thus transmitted to the MX release trigger by the third arm 46 of the indicator lever 41, which acts on the aperture lock 26 and an auxiliary lever 50 causing the rod 49 of the MX release trigger to drop. The mechanical locking function of the MX release trigger is no longer guaranteed in complete safety.

La came de signalisation 42 selon l'invention (en traits continus sur figure 9, et figure 10) présente une seule rampe R3 permettant une mise en position progressive du levier indicateur 41 jusqu'à l'encoche 43. V3 indique la position du voyant avant le basculement, avec suppression de la deuxième rampe R2 inversée qui évite le bossage 48 de décollage. La hauteur de chute du levier indicateur 41 est ainsi réduite d'une distance d lors de son introduction dans l'encoche 43. La tenue du déclencheur à émission MX n'est pas affectée, et sa tige reste en position de saillie de manière à garantir la fonction de verrouillage mécanique empêchant toute refermeture des contacts sans avoir acquitté le défaut.The signaling cam 42 according to the invention (in continuous lines on figure 9 , and figure 10 ) has a single ramp R3 allowing a progressive positioning of the indicator lever 41 to the notch 43. V3 indicates the position of the indicator before tilting, with removal of the second inverted R2 ramp which avoids the boss 48 takeoff. The height of fall of the indicator lever 41 is thus reduced by a distance d when it is introduced into the notch 43. The holding of the MX release trigger is not affected, and its rod remains in the protruding position so as to guarantee the mechanical locking function preventing the contacts from reclosing without having acknowledged the fault.

Sur la figure 10, la came de chargement 28 et la came de signalisation 42 sont solidarisées mécaniquement entre elles par des entretoises 51. L'ensemble des deux cames 28, 42 est engagé axialement et fixé sur l'arbre d'armement 29, lequel est avantageusement rainure dans la direction axiale. Chaque came 28, 42 comporte à cet effet un orifice central de forme circulaire, doté d'un index 52 radial. Les orifices des deux cames 28, 42 sont alignés axialement avec leurs index 52, lesquels sont positionnés dans la rainure de l'arbre de chargement 29. La direction radiale passant par les index 52 alignés des deux cames 28, 42 détermine un plan référentiel de trace 53 radiale. L'encoche 43 de la came de signalisation 42 est conformée selon un U, délimité par un premier flanc 54 droit, un deuxième flanc 55 incliné, et un fond fermé reliant les deux flancs 54, 55.On the figure 10 , the loading cam 28 and the signaling cam 42 are mechanically secured to each other by spacers 51. The set of two cams 28, 42 is engaged axially and fixed on the arming shaft 29, which is advantageously grooved in the axial direction. Each cam 28, 42 has for this purpose a central orifice of circular shape, with a radial index 52. The orifices of the two cams 28, 42 are aligned axially with their indexes 52, which are positioned in the groove of the loading shaft 29. The radial direction passing through the aligned indexes 52 of the two cams 28, 42 determines a reference plane of trace 53 radial. The notch 43 of the signaling cam 42 is shaped according to a U, delimited by a first right sidewall 54, a second inclined sidewall 55, and a closed bottom connecting the two sidewalls 54, 55.

Le positionnement angulaire de l'encoche 43 et de la rampe R3 de la came de signalisation 42 par rapport au plan référentiel 53 radial est le suivant :

  • le premier flanc 54 droit est décalé du plan référentiel 53 par un angle ∝ compris entre 10° et 20° ;
  • l'extrémité supérieure du deuxième flanc 55 rejoignant la partie terminale de la rampe R3 progressive est séparée du plan référentiel 53 par un angle β compris entre 20° et 40° ;
  • le début de la rampe R3 progressive est séparé du plan référentiel 53 par un angle λ compris entre 90° et 120°.
The angular positioning of the notch 43 and the ramp R3 of the signaling cam 42 with respect to the radial reference plane 53 is as follows:
  • the first straight edge 54 is offset from the reference plane 53 by an angle α of between 10 ° and 20 °;
  • the upper end of the second flank 55 joining the end portion of the progressive ramp R3 is separated from the reference plane 53 by an angle β between 20 ° and 40 °;
  • the beginning of the progressive ramp R3 is separated from the reference plane 53 by an angle λ between 90 ° and 120 °.

Le mécanisme de commande 14 OFO du disjoncteur permet d'assurer en toute sécurité la fonction de verrouillage par le déclencheur à émission MX ayant reçu un ordre d'ouverture lors de l'apparition d'un défaut.The OFO control mechanism 14 of the circuit breaker makes it possible to safely ensure the locking function by the MX transmission trigger having received an opening command at the occurrence of a fault.

Claims (4)

  1. A multipole electric circuit breaker having a pair of separable contacts (10, 11) per pole and an operating mechanism (14) comprising:
    - a toggle device (18) associated with a switching bar (13) and with a trip latch (20),
    - an opening spring (19) automatically loaded when a closing operation of the toggle device (18) takes place,
    - an energy storage device (21) with a closing spring (27) operated by a loading device (22) composed of a loading cam (28) keyed onto a loading shaft (29), and a drive part (31) acting as transmission means between the energy storage device (21) and the toggle device (18) to perform driving of the switching bar (13) and of the movable contacts (11) to the closed position when relaxation of the closing spring (27) takes place,
    - a closing ratchet and latch (34, 35) designed to lock the energy storage device (21) in a loaded state,
    - an opening ratchet and latch (25, 26) designed to collaborate with the trip latch (20) and with an auxiliary release (MX),
    - and an indicating device comprising an indicator lever (41) with an indicator (39) collaborating with an indicating cam (42) to indicate loaded, unloaded and ready-to-close states of the mechanism, said indicating cam (42) being fitted on the loading shaft (29) close to the loading cam (28), and being provided with a notch (43) for receiving the indicator lever (41) when the mechanism is in the loaded state,
    characterized in that
    - the indicating cam (42) is provided with a single ramp (R3) for progressively moving the indicator lever (41) into position up to the notch (43) to guarantee latching of the opening latch (26) maintained in the tripped position by the auxiliary release (MX),
    - the notch (43) of the indicating cam (42) is U-shaped, delineated by a straight first flank (54) and an inclined second flank (55), the straight first flank (54) being offset from the reference plane (53) by an angle ∝ comprised between 10° and 20°, and the top end of the second flank (55) joining the terminal part of the progressive ramp (R3) being separated from the reference plane (53) by an angle β comprised between 20° and 40°.
  2. The electric circuit breaker according to claim 1, characterized in that the loading cam (28) and the indicating cam (42) are mechanically secured to one another by spacers (51) and are mounted axially on the loading shaft (29), which is advantageously grooved in the axial direction, and in that each cam (28, 42) comprises a central opening of circular shape provided with a radial index (52) so as to constitute a radial reference plane (53) passing through said aligned indexes.
  3. The electric circuit breaker according to claim 2, characterized in that the beginning of the progressive ramp (R3) is separated from the reference plane (53) by an angle λ comprised between 90° and 120°.
  4. The electric circuit breaker according to one of claims 1 to 3, characterized in that the loading cam (28) presents a rocking dead point offset from the end of the cam by an angle comprised between 30° and 45°.
EP13706575.1A 2012-01-06 2013-01-07 Electrical power circuit breaker having an energy storage and a device for the improved indication of the operational state Active EP2801099B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1200058A FR2985600B1 (en) 2012-01-06 2012-01-06 ENERGY ACCUMULATOR POWER ELECTRIC CIRCUIT BREAKER AND SIGNALING DEVICE THAT IMPROVES OPERATING STATUS
PCT/FR2013/000007 WO2013102726A1 (en) 2012-01-06 2013-01-07 Electrical power circuit breaker having a power battery and a device for the improved indication of the operational state

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EP2801099B1 true EP2801099B1 (en) 2016-03-23

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CN (1) CN104040660B (en)
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RU2797696C2 (en) * 2018-07-30 2023-06-07 Шнейдер Электрик Эндюстри Сас Electrical switching device with shared contacts

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US10643801B2 (en) 2015-08-04 2020-05-05 Zhejiang Chint Electrics Co., Ltd. Circuit breaker energy storage operating mechanism
USD842258S1 (en) * 2016-03-29 2019-03-05 Kevin Somers Electrical circuit breaker charge cam
KR101904879B1 (en) * 2017-04-20 2018-10-08 엘에스산전 주식회사 Magnetic trip device of air circuit breaker
FR3084517B1 (en) 2018-07-30 2021-06-04 Schneider Electric Ind Sas ELECTRICAL SWITCHING DEVICE WITH SEPARABLE CONTACTS
FR3087044B1 (en) * 2018-10-03 2021-01-01 Schneider Electric Ind Sas LOCKING MODULE OF AN ARMING SYSTEM FOR ELECTRICAL DEVICE SWITCH
FR3090188B1 (en) 2018-12-14 2022-02-04 Schneider Electric Ind Sas Electric current cut-off device
FR3105565B1 (en) 2019-12-23 2022-01-14 Schneider Electric Ind Sas Electric current cut-off device
CN116959928B (en) * 2023-08-29 2024-03-05 泰安市泰和电力设备有限公司 Energy storage switching indicating device of circuit breaker spring operating mechanism and identification method

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RU2797696C2 (en) * 2018-07-30 2023-06-07 Шнейдер Электрик Эндюстри Сас Electrical switching device with shared contacts
EP3792949A1 (en) 2019-09-12 2021-03-17 Schneider Electric Industries SAS Electrical switching apparatus with separable contacts
US11062858B2 (en) 2019-09-12 2021-07-13 Schneider Electric Industries Sas Electrical switching unit with separable contacts

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EP2801099A1 (en) 2014-11-12
PL2801099T3 (en) 2016-09-30
US9373457B2 (en) 2016-06-21
FR2985600A1 (en) 2013-07-12
WO2013102726A1 (en) 2013-07-11
FR2985600B1 (en) 2014-11-28
ES2569107T3 (en) 2016-05-06
US20140299455A1 (en) 2014-10-09
CN104040660B (en) 2016-09-28
CN104040660A (en) 2014-09-10

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