EP2743958B1 - Electric current breaking apparatus, in particular a coupling breaker - Google Patents

Electric current breaking apparatus, in particular a coupling breaker Download PDF

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Publication number
EP2743958B1
EP2743958B1 EP20130188012 EP13188012A EP2743958B1 EP 2743958 B1 EP2743958 B1 EP 2743958B1 EP 20130188012 EP20130188012 EP 20130188012 EP 13188012 A EP13188012 A EP 13188012A EP 2743958 B1 EP2743958 B1 EP 2743958B1
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EP
European Patent Office
Prior art keywords
called
rotation
bimetal strip
moving
axis
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Active
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EP20130188012
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German (de)
French (fr)
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EP2743958A1 (en
Inventor
Samuel Faure
Jean-Marie Trico
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP2743958A1 publication Critical patent/EP2743958A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/521—Thermally-sensitive members actuated due to deflection of bimetallic element comprising a plurality of bimetals acting in the same direction
    • 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/1072—Release mechanisms which are reset by opening movement of contacts
    • 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H01H71/162—Electrothermal mechanisms with bimetal element with compensation for ambient temperature

Definitions

  • the present invention relates to low-voltage electrical power cut-off devices in general, and in particular, electric power cut-off devices installed at home and commonly called "branch circuit breakers".
  • This device is housed in an insulating casing and comprises at least one unipolar phase assembly and a control mechanism, said unipolar phase assembly comprising a breaking chamber accommodating a fixed contact and a movable contact, the different mobile contacts being carried by a movable contact carrier shaft, these movable contacts being able to be brought into an open position manually or automatically by means of a thermal protection device able to actuate the control mechanism so as to open the contacts during the occurrence of an overcurrent in the circuit to be protected, the thermal protection device comprising an active bimetal capable of producing a heating when an overcurrent occurs above a certain level above the value of the intensity nominal, this heating leading to a thermal release of the control mechanism of the apparatus so as to cause a opening of the contacts, a bimetal said compensation, intended to compensate for the changes that changes in the ambient temperature determine in the circuit temperature, the two bimetals being secured by means of a coupling device, this attachment device being deactivated when an overcurrent occurs, this deactivation causing actuation by the compensation bi
  • the rearming is carried out during the rotation of the movable contact carrier, which pulls on the piece supporting the bimetallic compensating via the elastic bead, and thus close the attachment.
  • This solution uses a large number of parts, and the use of a rod makes mounting difficult.
  • the subject of the present invention is an apparatus for breaking the electrical current of the kind mentioned above, this apparatus being characterized in that the axis, called the second axis, of rotation of the movable contact-carrying shaft and the axis , said first, of rotation of the bimetallic strip, are brought close to one another, and in that the movable contact-carrying shaft comprises a so-called first piece cooperating with a second said piece in rotation of the bimetal of compensation, these two parts being arranged relative to each other in such a way that after triggering of the mechanism, during driving of the movable contact-carrier shaft in the direction of the opening of the contacts the so-called first piece rotates the so-called second piece and thus the compensating bimetallic strip, in a direction opposite to that causing the mechanism to trip, until the two bimetallic strips are re-latched relative to each other. the other.
  • the number of parts used is particularly small, thus facilitating the mounting of the device.
  • the so-called second axis of rotation of the movable contact holder shaft (8) and the so-called first axis of rotation of the compensating bimetallic strip extend substantially parallel to one another. .
  • the so-called second axis of rotation of the movable contact-carrying shaft and the so-called first axis of rotation of the compensation bimetallic strip extend substantially perpendicularly with respect to each other.
  • this apparatus comprises biasing means of the bimetallic strip to a trigger position of the control mechanism.
  • this bimetallic strip is mounted in a so-called second insulating support, said insulating support being rotatably mounted around the so-called first axis of rotation, and in that the said first part cooperates with a part of the aforementioned insulating support. forming said so-called second piece.
  • these return means comprise a spring bearing, by one of its ends, on the so-called first support of the axis of rotation of the bimetallic strip, and by its opposite end, on the insulating support housing bimetallic compensation.
  • the so-called first part and the so-called said second piece have a beak shape.
  • the so-called first piece and the so-called second piece are integral with the movable contact holder shaft and the so-called second insulating support, respectively.
  • the so-called first carrier and the movable contact-carrier shaft are intended to be referenced and fixed on a plate, said plate comprising means for referencing a set of parts having a kinematic function, this assembly comprising the control mechanism above, the fixed contact (s), and a containment part of the so-called capoule cut.
  • the present invention also relates to a device for breaking the electric current, this apparatus being characterized in that it is a circuit breaker said branch intended to be interposed between a meter and an electrical panel.
  • FIG. 1 On the figure 1 has been shown a plate P on which are mounted the various elements of an electrical protection device such as a branch circuit breaker allowing an individual to be connected to the electrical network, said circuit breaker being intended to be located between a meter and a table electric.
  • This assembly is intended to be mounted in an insulating housing (not shown), this housing having an opening for the passage of a lever M for the operation of the apparatus and having access openings to input terminals and to output terminals intended to be electrically connected respectively to the meter and to the electrical panel.
  • This device is of the multipole type and mainly comprises a control mechanism 1 and, according to this particular embodiment, four unipolar assemblies 2, 3, 4, 5 comprising three assemblies 2, 3, 4 intended to cut a phase and an assembly.
  • unipolar 5 for the neutral cut each of these sets being associated an input terminal and an output terminal.
  • Each unipolar assembly 2, 3, 4, 5 comprises a fixed contact (not shown) electrically connected by a braid to one of the terminals, and a movable contact 7 electrically connected by a flexible conductor to the other of the terminals.
  • This movable contact 7 is supported by a shaft 8 movable contact holder common to all unipolar assemblies, and adapted to be rotated by a control mechanism 1 between a position in which the fixed and movable contacts 7 are open and a position in which the fixed and mobile contacts are closed.
  • the control of the opening of the contacts can be effected either manually by the operation of a lever M belonging to the control mechanism 1, or automatically by means of a protective device comprising a magnetic protection device 9 against instantaneous overloads of electric current, and a thermal protection device 10 against prolonged overloads of electric current.
  • each unipolar phase assembly 2,3,4 comprises an electric circuit comprising, connected in series with the fixed and movable contacts 7, a thermal protection device 10 and a magnetic protection device 9.
  • These two protection devices 9, Each comprise an actuator adapted to act on a so-called transfer bar 11, said bar extending substantially parallel to the alignment direction of the unipolar assemblies 2,3,4 and being intended to transmit the tripping order or opening of the contacts to the control mechanism 1, which acts to drive the shaft 8 movable contact carrier in an open position of the contacts 7 of all unipolar assemblies.
  • This apparatus also comprises a differential protection device comprising a differential relay 37 capable of sending an opening command to the control mechanism 1 during an imbalance caused by a receiver having a fault current, this device not being related. with the invention will not be described in more detail.
  • each unipolar subset of said phase 2,3,4 further comprises a so-called containment piece of the cut-off 17, more commonly known as "capoule”, which is intended to be fixed on the plate P and comprises a recess 21 of substantially parallelepipedal shape closed at its lower part by the plate P.
  • This recess 21 forms a breaking chamber intended to accommodate an arc extinguishing chamber 22, a fixed contact and a movable contact 7.
  • the confinement part 17 supports, on the one hand, the coil 25 of the magnetic protection device 9 via the distributor on which it is soldered, and on the other hand, the bimetallic strips of the thermal protection device 10, which comprise an active bimetal 26 and a bimetallic said compensation 27 whose function will be described in the following.
  • This apparatus also comprises a nominal current calibration shunt 38 which it is desired to define for the apparatus in question, this shunt being screwed on the distributor and being connected by one of its ends to the coil 25 of the device. magnetic protection.
  • the shunt is in parallel with the coil and the bimetal, the coil and the bimetal being in series or in parallel with each other.
  • the insulating support supporting the bimetallic strip is rotatably mounted about an axis extending substantially perpendicularly to the axis of rotation of the movable contact carrier shaft.
  • a beak portion of the insulating support cooperates with a beak portion of the movable contact holder shaft in the same manner as for the previous embodiment.
  • this apparatus is connected by connecting the respective mechanisms of the different assemblies to the corresponding phases and to the neutral of the power supply network, by means of the input connectors, while connecting the installation of the user to be protected to the output connectors.
  • the thermal protection device 10 is used to signal lower overcurrents, for example up to ten times the rated current established for the device, while the coil 25 is responsible for reporting overcurrents greater than this value.
  • the magnetic device 9 allows an instantaneous response to large point overcurrents, such as those resulting from short circuits, so that when such a short circuit occurs, the magnetic device 9 acts on the movable contact carrier 8 of to cause the opening of the contacts 7, by the separation between the movable contacts 7 and the fixed contacts.
  • the portion of the current that passes through the bimetal 26 has the effect that it heats up and takes a steady state temperature in which it does not cause automatic triggering.
  • the bimetal 26 When an overcurrent occurs which exceeds the mentioned calibration limit, but does not reach the excessively high values as is the case for overconsumption in the controlled installation, the bimetal 26 signals said overcurrent by a greater heating, said bimetal then undergoes a bending which allows to trigger the initiation of the opening of the contacts at these levels of overcurrent.
  • the active bimetal 26 releases the compensating bi-metal 27, so that the latter operates the transfer bar 11, thereby causing the contacts 7 to open.
  • the coil 25 gives rise to a magnetic trip opening of the contacts of the device, whereas when overcurrents occur of lower value which originate from overconsumption in the controlled installation, the active bimetal 26 gives rise, via the compensation bimetal 27, to a thermal tripping which likewise causes the opening of the contacts.
  • an actuatable screw is provided, by means of which one can adjust the voltage of the bimetal to adapt the bending of the latter as a function of temperature.
  • the compensating bi-metal 27 makes it possible, in a manner known per se, to compensate for the variations to which the changes in the ambient temperature can give rise in the behavior of the active bimetal 26, so that the thermal tripping always occurs in accordance with the intensity of the nominal calibration, ie by compensating for the variations that changes in the ambient temperature may cause in the temperature that the circuit takes under the effect of the current.
  • the active bimetal 26 is sensitive to the current flowing through it, while the bimetallic strip 27 is sensitive only to ambient temperature.
  • the active bimetallic strip 26 is fixed at one of its ends to the so-called first support 30.
  • the compensating bimetallic strip 27 is mounted in a so-called second insulating support 28 comprising, at one of its ends, a bearing portion 36 capable of to receive the hinge axis 29 of the bimetallic strip 27, said axis being integral with said first support 30, which is intended to be fixed on the plate P.
  • the two bimetallic strips are connected to each other at their free ends facing each other by means of an attachment device 31.
  • a spring 32 ( fig.4 ) is intended to be mounted around the bearing portion 36 of the insulating support 28, being supported by one of its ends, on the so-called first support 30, and by its opposite end, on the insulating support said second 28 housing the bimetallic strip 27, so that when the attachment device 31 is deactivated, the spring 32 recalls the bimetallic strip 27 in a position in which it presses on the transfer bar 11 so as to cause a triggering of the device that opens the contacts.
  • the so-called second axis of rotation 33 of the movable contact-carrying shaft 8 and the so-called first rotation axis 29 of the compensating bimetallic strip 27 are brought closer to one another and extend substantially parallel to each other.
  • the movable contact shaft-holder 8 is integral with a so-called first part 34 adapted to cooperate with a so-called second piece 35 secured to the support insulator 28 of the bimetallic strip 27 so as to recall the bimetallic strip in a hooking position with the active bimetal 26 against the aforementioned spring 32.
  • this so-called first piece 34 and this so-called second piece 35 are integrally formed respectively with the movable contact holder shaft 8 and with the insulating support 28 of the compensation bimetallic strip 27.
  • the return spring 32 comes into action so as to drive the piece 28 supporting the compensating bimetallic strip 27 and thus, the bimetallic strip, in rotation about the so-called first axis 29, towards a position in which it acts on the transfer bar 11.
  • the invention applies to any electrical switching device comprising a thermal protection device comprising an active bimetallic and a bimetallic compensating, and a shaft supporting movable contacts.

Description

DOMAINE TECHNIQUETECHNICAL AREA

La présente invention concerne les appareils de coupure de courant électrique basse tension en général, et en particulier, les appareils de coupure de courant électriques installés chez les particuliers et couramment appelés « disjoncteurs de branchement ».The present invention relates to low-voltage electrical power cut-off devices in general, and in particular, electric power cut-off devices installed at home and commonly called "branch circuit breakers".

Cet appareil est logé dans un boîtier isolant et comporte au moins un ensemble unipolaire de phase et un mécanisme de commande, ledit ensemble unipolaire de phase comportant une chambre de coupure logeant un contact fixe et un contact mobile, les différents contacts mobiles étant portés par un arbre porte-contacts mobiles, ces contacts mobiles pouvant être amenés dans une position d'ouverture manuellement ou automatiquement par l'intermédiaire d'un dispositif de protection thermique apte à actionner le mécanisme de commande de manière à ouvrir les contacts lors de la survenue d'une surintensité dans le circuit à protéger, le dispositif de protection thermique comportant un bimétal dit actif apte à produire un échauffement lors qu'il se produit une surintensité au-dessus d'un certain niveau au-dessus de la valeur de l'intensité nominale, cet échauffement conduisant à un déclenchement thermique du mécanisme de commande de l'appareil de manière à entraîner une ouverture des contacts, un bimétal dit de compensation, destiné à compenser les variations que les changements de la température ambiante déterminent dans la température du circuit, les deux bilames étant solidarisés au moyen d'un dispositif d'accrochage, ce dispositif d'accrochage étant désactivé lors de la survenue d'une surintensité, cette désactivation entraînant l'actionnement par le bilame de compensation du mécanisme de commande dans le sens d'une ouverture des contacts, ainsi que des moyens de réarmement aptes à rappeler le dispositif d'accrochage en position activée lors de l'ouverture des contacts.This device is housed in an insulating casing and comprises at least one unipolar phase assembly and a control mechanism, said unipolar phase assembly comprising a breaking chamber accommodating a fixed contact and a movable contact, the different mobile contacts being carried by a movable contact carrier shaft, these movable contacts being able to be brought into an open position manually or automatically by means of a thermal protection device able to actuate the control mechanism so as to open the contacts during the occurrence of an overcurrent in the circuit to be protected, the thermal protection device comprising an active bimetal capable of producing a heating when an overcurrent occurs above a certain level above the value of the intensity nominal, this heating leading to a thermal release of the control mechanism of the apparatus so as to cause a opening of the contacts, a bimetal said compensation, intended to compensate for the changes that changes in the ambient temperature determine in the circuit temperature, the two bimetals being secured by means of a coupling device, this attachment device being deactivated when an overcurrent occurs, this deactivation causing actuation by the compensation bimetallic strip of the control mechanism in the direction of an opening of the contacts, as well as resetting means able to recall the attachment device in position activated when opening contacts.

ETAT ANTERIEUR DE LA TECHNIQUEPRIOR STATE OF THE TECHNIQUE

Un appareil de coupure du courant electrique avec compensation de la température ambiante est connu du document US 3 234 348 .An apparatus for breaking the electrical current with compensation of the ambient temperature is known from the document US 3,234,348 .

On connaît également des appareils dans lesquels ce réarmement est réalisé au moyen d'une tringle élastique reliée par l'une de ses extrémités à une pièce supportant le bilame de compensation, et par son extrémité opposée, au porte-contacts mobiles par l'intermédiaire d'une autre pièce en plastique.Devices are also known in which this resetting is carried out by means of an elastic rod connected at one of its ends to a part supporting the bimetallic strip, and at its opposite end to the mobile contact carrier via another piece of plastic.

Le réarmement s'effectue lors de la rotation du porte-contacts mobiles, lequel vient tirer sur la pièce supportant le bilame de compensation via la tringle élastique, et ainsi refermer l'accrochage.The rearming is carried out during the rotation of the movable contact carrier, which pulls on the piece supporting the bimetallic compensating via the elastic bead, and thus close the attachment.

Cette solution utilise un nombre de pièces important, et l'utilisation d'une tringle rend le montage difficile.This solution uses a large number of parts, and the use of a rod makes mounting difficult.

EXPOSE DE L'INVENTIONSUMMARY OF THE INVENTION BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

A cet effet, la présente invention a pour objet un appareil de coupure du courant électrique du genre précédemment mentionné, cet appareil étant caractérisé en ce que l'axe, dit second, de rotation de l'arbre porte-contacts mobiles et l'axe, dit premier, de rotation du bilame de compensation, sont amenés à proximité l'un de l'autre, et en ce que l'arbre porte-contacts mobiles comporte une pièce dite première coopérant avec une pièce dite seconde solidaire en rotation du bilame de compensation, ces deux pièces étant agencées l'une par rapport à l'autre de telle manière qu'après un déclenchement du mécanisme, lors de l'entraînement de l'arbre porte-contacts mobiles dans la direction de l'ouverture des contacts, la pièce dite première entraîne en rotation la pièce dite seconde et donc le bilame de compensation, dans un sens opposé à celui ayant entraîné le déclenchement du mécanisme, jusqu'à obtenir le ré-accrochage des deux bilames l'un par rapport à l'autre.For this purpose, the subject of the present invention is an apparatus for breaking the electrical current of the kind mentioned above, this apparatus being characterized in that the axis, called the second axis, of rotation of the movable contact-carrying shaft and the axis , said first, of rotation of the bimetallic strip, are brought close to one another, and in that the movable contact-carrying shaft comprises a so-called first piece cooperating with a second said piece in rotation of the bimetal of compensation, these two parts being arranged relative to each other in such a way that after triggering of the mechanism, during driving of the movable contact-carrier shaft in the direction of the opening of the contacts the so-called first piece rotates the so-called second piece and thus the compensating bimetallic strip, in a direction opposite to that causing the mechanism to trip, until the two bimetallic strips are re-latched relative to each other. the other.

Grâce à ces caractéristiques, le nombre de pièces utilisées est particulièrement réduit, facilitant de ce fait le montage de l'appareil.Thanks to these characteristics, the number of parts used is particularly small, thus facilitating the mounting of the device.

Selon une réalisation particulière, l'axe dit second de rotation de l'arbre porte-contacts mobiles (8) et l'axe dit premier de rotation du bilame de compensation, s'étendent sensiblement parallèlement l'un par rapport à l'autre.According to a particular embodiment, the so-called second axis of rotation of the movable contact holder shaft (8) and the so-called first axis of rotation of the compensating bimetallic strip extend substantially parallel to one another. .

Selon une autre réalisation particulière, l'axe dit second de rotation de l'arbre porte-contacts mobiles et l'axe dit premier de rotation du bilame de compensation, s'étendent sensiblement perpendiculairement l'un par rapport à l'autre.According to another particular embodiment, the so-called second axis of rotation of the movable contact-carrying shaft and the so-called first axis of rotation of the compensation bimetallic strip extend substantially perpendicularly with respect to each other.

Selon une autre caractéristique, cet appareil comporte des moyens de rappel du bilame de compensation vers une position de déclenchement du mécanisme de commande.According to another characteristic, this apparatus comprises biasing means of the bimetallic strip to a trigger position of the control mechanism.

Selon une autre caractéristique, ce bilame de compensation est monté dans un support dit second isolant, ledit support isolant étant monté rotatif autour de l'axe de rotation dit premier, et en ce que la pièce dite première coopère avec une partie du support isolant précité, formant la pièce dite seconde précitée.According to another characteristic, this bimetallic strip is mounted in a so-called second insulating support, said insulating support being rotatably mounted around the so-called first axis of rotation, and in that the said first part cooperates with a part of the aforementioned insulating support. forming said so-called second piece.

Selon une caractéristique particulière, ces moyens de rappel comportent un ressort en appui, par l'une de ses extrémités, sur le support dit premier de l'axe de rotation du bilame de compensation, et par son extrémité opposée, sur le support isolant logeant le bilame de compensation.According to a particular characteristic, these return means comprise a spring bearing, by one of its ends, on the so-called first support of the axis of rotation of the bimetallic strip, and by its opposite end, on the insulating support housing bimetallic compensation.

Selon une autre caractéristique, la pièce dite première et la pièce dite seconde précitées présentent une forme de bec.According to another characteristic, the so-called first part and the so-called said second piece have a beak shape.

Avantageusement, la pièce dite première et la pièce dite seconde sont venues de matière respectivement avec l'arbre porte-contacts mobiles et le support isolant dit second.Advantageously, the so-called first piece and the so-called second piece are integral with the movable contact holder shaft and the so-called second insulating support, respectively.

Selon une autre caractéristique, le support dit premier ainsi que l'arbre porte-contacts mobiles sont destinés à être référencés et fixés sur une platine, ladite platine comportant des moyens de référencement d'un ensemble de pièces ayant une fonction cinématique, cet ensemble comprenant le mécanisme de commande précité, le(s) contact(s) fixe(s), et une pièce de confinement de la coupure dite capoule.According to another characteristic, the so-called first carrier and the movable contact-carrier shaft are intended to be referenced and fixed on a plate, said plate comprising means for referencing a set of parts having a kinematic function, this assembly comprising the control mechanism above, the fixed contact (s), and a containment part of the so-called capoule cut.

La présente invention a encore pour objet un appareil de coupure du courant électrique, cet appareil étant caractérisé en ce que c'est un disjoncteur dit de branchement destiné à être interposé entre un compteur et un tableau électrique.The present invention also relates to a device for breaking the electric current, this apparatus being characterized in that it is a circuit breaker said branch intended to be interposed between a meter and an electrical panel.

Mais d'autres avantages et caractéristiques 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 :

  • La figure 1 est une vue en perspective, illustrant une platine supportant les différents éléments d'un appareil de coupure du courant selon l'invention,
  • La figure 2 est une vue en perspective correspondant à la figure 1, avant le montage des pièces de confinement de la coupure sur la platine,
  • Les figures 3 et 4 sont deux vues partielles en perspective, illustrant selon deux orientations différentes, l'arbre porte-contacts mobiles et le dispositif de protection thermique selon l'invention.
  • Les figures 5,6 et 7 sont des vues partielles en perspective, illustrant ces deux derniers éléments respectivement dans une position fermée non déclenchée du mécanisme, dans une position fermée déclenchée du mécanisme, et en position ouverte réarmé du mécanisme,
  • La figure 8 est une vue en perspective montrant le support de bilames et les deux bilames.
But other advantages and features of the invention will become more apparent in the detailed description which follows and refers to the accompanying drawings given solely by way of example and in which:
  • The figure 1 is a perspective view, illustrating a plate supporting the various elements of a current-breaking device according to the invention,
  • The figure 2 is a perspective view corresponding to the figure 1 , before mounting the containment parts of the cut on the plate,
  • The Figures 3 and 4 are two partial views in perspective, illustrating in two different orientations, the movable contact-carrying shaft and the thermal protection device according to the invention.
  • The figures 5,6 and 7 are partial views in perspective, illustrating these last two elements respectively in an unlocked closed position of the mechanism, in a closed position triggered by the mechanism, and in the reset open position of the mechanism,
  • The figure 8 is a perspective view showing the bimetallic support and the two bimetals.

Sur la figure 1 a été représentée une platine P sur laquelle sont montés les différents éléments d'un appareil de protection électrique tel un disjoncteur de branchement permettant à un particulier d'être raccordé au réseau électrique, ledit disjoncteur étant destiné à être situé entre un compteur et un tableau électrique. Cet ensemble est destiné à être monté dans un boîtier isolant (non représenté), ce boîtier présentant une ouverture destinée au passage d'une manette M destinée à la manoeuvre de l'appareil et comportant des ouvertures d'accès à des bornes d'entrée et à des bornes de sortie destinées à être reliées électriquement respectivement au compteur et au tableau électrique.On the figure 1 has been shown a plate P on which are mounted the various elements of an electrical protection device such as a branch circuit breaker allowing an individual to be connected to the electrical network, said circuit breaker being intended to be located between a meter and a table electric. This assembly is intended to be mounted in an insulating housing (not shown), this housing having an opening for the passage of a lever M for the operation of the apparatus and having access openings to input terminals and to output terminals intended to be electrically connected respectively to the meter and to the electrical panel.

Cet appareil est du type multipolaire et comporte principalement un mécanisme de commande 1 et, selon cette réalisation particulière, quatre ensembles unipolaires 2, 3, 4, 5 comprenant trois ensembles 2, 3, 4 destinés à la coupure d'une phase et un ensemble unipolaire 5 destiné à la coupure du neutre, à chacun de ces ensembles étant associé une borne d'entrée et une borne de sortie. Chaque ensemble unipolaire 2, 3, 4, 5 comporte un contact fixe (non représenté) relié électriquement par une tresse à l'une des bornes, et un contact mobile 7 relié électriquement par un conducteur souple à l'autre des bornes.This device is of the multipole type and mainly comprises a control mechanism 1 and, according to this particular embodiment, four unipolar assemblies 2, 3, 4, 5 comprising three assemblies 2, 3, 4 intended to cut a phase and an assembly. unipolar 5 for the neutral cut, each of these sets being associated an input terminal and an output terminal. Each unipolar assembly 2, 3, 4, 5 comprises a fixed contact (not shown) electrically connected by a braid to one of the terminals, and a movable contact 7 electrically connected by a flexible conductor to the other of the terminals.

Ce contact mobile 7 est supporté par un arbre 8 porte-contact mobile commun à tous les ensembles unipolaires, et apte à être entraîné en rotation par un mécanisme de commande 1 entre une position dans laquelle les contacts fixe et mobile 7 sont ouverts et une position dans laquelle les contacts fixe et mobile sont fermés.This movable contact 7 is supported by a shaft 8 movable contact holder common to all unipolar assemblies, and adapted to be rotated by a control mechanism 1 between a position in which the fixed and movable contacts 7 are open and a position in which the fixed and mobile contacts are closed.

La commande de l'ouverture des contacts peut s'effectuer soit manuellement par la manoeuvre d'une manette M appartenant au mécanisme de commande 1, soit automatiquement par l'intermédiaire d'un dispositif de protection comportant un dispositif de protection magnétique 9 contre les surcharges instantanées de courant électrique, et un dispositif de protection thermique 10 contre les surcharges prolongées de courant électrique.The control of the opening of the contacts can be effected either manually by the operation of a lever M belonging to the control mechanism 1, or automatically by means of a protective device comprising a magnetic protection device 9 against instantaneous overloads of electric current, and a thermal protection device 10 against prolonged overloads of electric current.

Ainsi, chaque ensemble unipolaire de phase 2,3,4 comporte un circuit électrique comportant, montés en série avec les contacts fixe et mobile 7, un dispositif de protection thermique 10 et un dispositif de protection magnétique 9. Ces deux dispositifs de protection 9,10 comportent chacun un actionneur apte à agir sur une barre dite de transfert 11, ladite barre s'étendant sensiblement parallèlement à la direction d'alignement des ensembles unipolaires 2,3,4 et étant destinée à transmettre l'ordre de déclenchement ou d'ouverture des contacts au mécanisme de commande 1, lequel agit pour entraîner l'arbre 8 porte-contact mobiles dans une position d'ouverture des contacts 7 de tous les ensembles unipolaires.Thus, each unipolar phase assembly 2,3,4 comprises an electric circuit comprising, connected in series with the fixed and movable contacts 7, a thermal protection device 10 and a magnetic protection device 9. These two protection devices 9, Each comprise an actuator adapted to act on a so-called transfer bar 11, said bar extending substantially parallel to the alignment direction of the unipolar assemblies 2,3,4 and being intended to transmit the tripping order or opening of the contacts to the control mechanism 1, which acts to drive the shaft 8 movable contact carrier in an open position of the contacts 7 of all unipolar assemblies.

Cet appareil comporte également un dispositif de protection différentiel comportant un relais différentiel 37 apte à envoyer un ordre d'ouverture au mécanisme de commande 1 lors d'un déséquilibre provoqué par un récepteur présentant un courant de défaut, ce dispositif n'étant pas en rapport avec l'invention ne sera pas décrit plus en détail.This apparatus also comprises a differential protection device comprising a differential relay 37 capable of sending an opening command to the control mechanism 1 during an imbalance caused by a receiver having a fault current, this device not being related. with the invention will not be described in more detail.

Tel que ceci est plus particulièrement illustré sur la figure 2, chaque sous-ensemble unipolaire de phase précité 2,3,4 comporte en outre une pièce dite de confinement de la coupure 17, plus communément appelée « capoule », laquelle est destinée à être fixée sur la platine P et comporte un évidement 21 de forme sensiblement parallélépipédique fermé à sa partie inférieure par la platine P. Cet évidement 21 forme une chambre de coupure destinée à loger une chambre d'extinction d'arc 22, un contact fixe et un contact mobile 7.As this is more particularly illustrated on the figure 2 each unipolar subset of said phase 2,3,4 further comprises a so-called containment piece of the cut-off 17, more commonly known as "capoule", which is intended to be fixed on the plate P and comprises a recess 21 of substantially parallelepipedal shape closed at its lower part by the plate P. This recess 21 forms a breaking chamber intended to accommodate an arc extinguishing chamber 22, a fixed contact and a movable contact 7.

Tel que plus particulièrement illustré sur la figure 2, selon cette réalisation particulière de l'invention, la pièce de confinement 17 supporte d'une part la bobine 25 du dispositif de protection magnétique 9 par l'intermédiaire du répartiteur sur lequel elle est soudée, et d'autre part, les bilames du dispositif de protection thermique 10, lesquels comprennent un bilame actif 26 et un bilame dit de compensation 27 dont la fonction sera décrite dans ce qui suit.As more particularly illustrated on the figure 2 according to this particular embodiment of the invention, the confinement part 17 supports, on the one hand, the coil 25 of the magnetic protection device 9 via the distributor on which it is soldered, and on the other hand, the bimetallic strips of the thermal protection device 10, which comprise an active bimetal 26 and a bimetallic said compensation 27 whose function will be described in the following.

Cet appareil comporte également, un shunt 38 d'étalonnage du courant nominal que l'on souhaite définir pour l'appareil en question, ce shunt étant vissé sur le répartiteur et étant relié par l'une de ses extrémités à la bobine 25 du dispositif de protection magnétique.This apparatus also comprises a nominal current calibration shunt 38 which it is desired to define for the apparatus in question, this shunt being screwed on the distributor and being connected by one of its ends to the coil 25 of the device. magnetic protection.

On notera que le shunt est en parallèle avec la bobine et le bimétal, la bobine et le bimétal étant en série ou en parallèle entre eux.It will be noted that the shunt is in parallel with the coil and the bimetal, the coil and the bimetal being in series or in parallel with each other.

Selon une autre réalisation non illustrée, le support isolant supportant le bilame de compensation est monté rotatif autour d'un axe s'étendant sensiblement perpendiculairement à l'axe de rotation de l'arbre porte-contacts mobiles. Selon cette réalisation, une partie formant bec du support isolant coopère avec une partie formant bec de l'arbre porte-contacts mobiles de la même manière que pour la réalisation précédente.According to another embodiment not illustrated, the insulating support supporting the bimetallic strip is rotatably mounted about an axis extending substantially perpendicularly to the axis of rotation of the movable contact carrier shaft. According to this embodiment, a beak portion of the insulating support cooperates with a beak portion of the movable contact holder shaft in the same manner as for the previous embodiment.

En fonctionnement, cet appareil est branché en connectant les mécanismes respectifs des différents ensembles aux phases correspondantes et au neutre du réseau d'alimentation électrique, au moyen des connecteurs d'entrée, tandis qu'on connecte l'installation de l'usager à protéger aux connecteurs de sortie. Fonctionnellement, le dispositif de protection thermique 10 sert à signaler des surintensités plus faibles, par exemple de jusqu'à dix fois l'intensité nominale établie pour l'appareil, alors que la bobine 25 est chargée de signaler des surintensités supérieure à cette valeur.In operation, this apparatus is connected by connecting the respective mechanisms of the different assemblies to the corresponding phases and to the neutral of the power supply network, by means of the input connectors, while connecting the installation of the user to be protected to the output connectors. Functionally, the thermal protection device 10 is used to signal lower overcurrents, for example up to ten times the rated current established for the device, while the coil 25 is responsible for reporting overcurrents greater than this value.

Ainsi, le dispositif magnétique 9 permet une réponse instantanée aux grandes surintensités ponctuelles, comme celles qui résultent de courts-circuits, de sorte que lorsqu'un tel court-circuit se produit, le dispositif magnétique 9 agit sur le porte-contacts mobile 8 de façon à entraîner l'ouverture des contacts 7, par la séparation entre les contacts mobiles 7 et les contacts fixes.Thus, the magnetic device 9 allows an instantaneous response to large point overcurrents, such as those resulting from short circuits, so that when such a short circuit occurs, the magnetic device 9 acts on the movable contact carrier 8 of to cause the opening of the contacts 7, by the separation between the movable contacts 7 and the fixed contacts.

Si le courant qui circule dans l'appareil se trouve au-dessous de la limite d'étalonnage établie, la partie du courant qui passe par le bimétal 26 a pour effet que celui-ci s'échauffe et prend une température de régime dans laquelle il ne provoque pas de déclenchement automatique.If the current flowing in the apparatus is below the established calibration limit, the portion of the current that passes through the bimetal 26 has the effect that it heats up and takes a steady state temperature in which it does not cause automatic triggering.

Lorsqu'il se produit une surintensité qui excède la limite d'étalonnage mentionnée, mais sans atteindre les valeurs excessivement élevées comme ceci est le cas pour les surconsommations dans l'installation contrôlée, le bimétal 26 signale ladite surintensité par un plus grand échauffement, ledit bimétal subissant alors une flexion qui permet d'actionner le déclenchement de l'ouverture des contacts à ces niveaux de surintensité.When an overcurrent occurs which exceeds the mentioned calibration limit, but does not reach the excessively high values as is the case for overconsumption in the controlled installation, the bimetal 26 signals said overcurrent by a greater heating, said bimetal then undergoes a bending which allows to trigger the initiation of the opening of the contacts at these levels of overcurrent.

Lorsqu'il fléchit, le bimétal dit actif 26 libère le bimétal de compensation 27, de sorte que ce dernier actionne la barre de transfert 11, engendrant de ce fait l'ouverture des contacts 7.When it bends, the active bimetal 26 releases the compensating bi-metal 27, so that the latter operates the transfer bar 11, thereby causing the contacts 7 to open.

Ainsi, lorsqu'il se produit de fortes surintensités, comme celles qui ont pour origine des courts-circuits, la bobine 25 donne lieu à un déclenchement magnétique d'ouverture des contacts de l'appareil, tandis que lorsqu'il se produit des surintensités de plus faible valeur qui ont pour origine des surconsommations dans l'installation contrôlée, le bimétal actif 26 donne lieu, au travers du bimétal de compensation 27, à un déclenchement thermique qui, de même, engendre l'ouverture des contacts.Thus, when strong overcurrents, such as those resulting from short-circuits, occur, the coil 25 gives rise to a magnetic trip opening of the contacts of the device, whereas when overcurrents occur of lower value which originate from overconsumption in the controlled installation, the active bimetal 26 gives rise, via the compensation bimetal 27, to a thermal tripping which likewise causes the opening of the contacts.

On notera que de manière connue en soi, une vis actionnable est prévue, au moyen de laquelle on peur régler la tension du bimétal pour adapter la flexion de ce dernier en fonction de la température.Note that in a manner known per se, an actuatable screw is provided, by means of which one can adjust the voltage of the bimetal to adapt the bending of the latter as a function of temperature.

Le bimétal de compensation 27 permet de manière connue en soi, de compenser les variations auxquelles les changements de la température ambiante peuvent donner lieu dans le comportement du bimétal actif 26, pour que le déclenchement thermique se produise toujours en accord avec l'intensité d'étalonnage nominal, c'est-à-dire en compensant les variations que les changements de la température ambiante peuvent provoquer dans la température que le circuit prend sous l'effet du courant.The compensating bi-metal 27 makes it possible, in a manner known per se, to compensate for the variations to which the changes in the ambient temperature can give rise in the behavior of the active bimetal 26, so that the thermal tripping always occurs in accordance with the intensity of the nominal calibration, ie by compensating for the variations that changes in the ambient temperature may cause in the temperature that the circuit takes under the effect of the current.

Ainsi, le bilame actif 26 est sensible au courant qui le traverse, tandis que le bilame de compensation 27 n'est sensible qu'à la température ambiante.Thus, the active bimetal 26 is sensitive to the current flowing through it, while the bimetallic strip 27 is sensitive only to ambient temperature.

Tel qu'illustré plus particulièrement sur la figure 8, le bilame actif 26 est fixé par l'une de ses extrémités sur le support dit premier 30. Le bilame de compensation 27 est monté dans un support isolant dit second 28, comportant à l'une de ses extrémités une partie formant palier 36 apte à recevoir l'axe d'articulation 29 du bilame de compensation 27, ledit axe étant solidaire du support dit premier 30, lequel est destiné à être fixé sur la platine P.As illustrated more particularly in the figure 8 the active bimetallic strip 26 is fixed at one of its ends to the so-called first support 30. The compensating bimetallic strip 27 is mounted in a so-called second insulating support 28 comprising, at one of its ends, a bearing portion 36 capable of to receive the hinge axis 29 of the bimetallic strip 27, said axis being integral with said first support 30, which is intended to be fixed on the plate P.

Les deux bilames sont reliés l'un à l'autre à leurs extrémités libres en regard, par un dispositif d'accrochage 31.The two bimetallic strips are connected to each other at their free ends facing each other by means of an attachment device 31.

Un ressort 32 (fig.4) est destiné à être monté autour de la partie formant palier 36 du support isolant 28, étant en appui par l'une de ses extrémités, sur le support dit premier 30, et par son extrémité opposée, sur le support isolant dit second 28 logeant le bilame de compensation 27, de telle manière que lorsque le dispositif d'accrochage 31 est désactivé, le ressort 32 rappelle le bilame de compensation 27 dans une position dans laquelle il appuie sur la barre de transfert 11 de manière à provoquer un déclenchement de l'appareil entraînant l'ouverture des contacts.A spring 32 ( fig.4 ) is intended to be mounted around the bearing portion 36 of the insulating support 28, being supported by one of its ends, on the so-called first support 30, and by its opposite end, on the insulating support said second 28 housing the bimetallic strip 27, so that when the attachment device 31 is deactivated, the spring 32 recalls the bimetallic strip 27 in a position in which it presses on the transfer bar 11 so as to cause a triggering of the device that opens the contacts.

Selon l'invention, l'axe de rotation dit second 33 de l'arbre 8 porte-contacts mobiles et l'axe de rotation dit premier 29 du bilame de compensation 27 sont rapprochés l'un de l'autre et s'étendent sensiblement parallèlement l'un par rapport à l'autre. Et l'arbre-porte contacts mobiles 8 est solidaire d'une pièce dite première 34 apte à coopérer avec une pièce dite seconde 35 solidaire du support isolant 28 du bilame de compensation 27 de manière à rappeler ce bilame de compensation dans une position d'accrochage avec le bilame actif 26 à l'encontre du ressort précité 32.According to the invention, the so-called second axis of rotation 33 of the movable contact-carrying shaft 8 and the so-called first rotation axis 29 of the compensating bimetallic strip 27 are brought closer to one another and extend substantially parallel to each other. And the movable contact shaft-holder 8 is integral with a so-called first part 34 adapted to cooperate with a so-called second piece 35 secured to the support insulator 28 of the bimetallic strip 27 so as to recall the bimetallic strip in a hooking position with the active bimetal 26 against the aforementioned spring 32.

Avantageusement, cette pièce dite première 34 et cette pièce dite seconde 35 sont venues de matière respectivement avec l'arbre porte-contacts mobiles 8 et avec le support isolant 28 du bilame de compensation 27.Advantageously, this so-called first piece 34 and this so-called second piece 35 are integrally formed respectively with the movable contact holder shaft 8 and with the insulating support 28 of the compensation bimetallic strip 27.

Le fonctionnement d'un appareil de coupure du courant selon l'invention va être décrit dans ce qui suit en référence aux figures 5 à 7.The operation of a current-breaking device according to the invention will be described in the following with reference to the Figures 5 to 7 .

Sur la figure 5, le mécanisme 1 de l'appareil est en position fermée non déclenchée.On the figure 5 , the mechanism 1 of the device is in the closed position not triggered.

Dans cette position, les deux bilames 26,27 sont solidarisés par le dispositif d'accrochage 31, et les deux pièces respectivement première 34 et seconde 35, sont éloignées l'une de l'autre.In this position, the two bimetals 26,27 are secured by the attachment device 31, and the two parts respectively first 34 and second 35, are spaced apart from each other.

Lorsqu'il se produit une surintensité qui excède la limite d'étalonnage mentionnée, mais sans atteindre les valeurs excessivement élevées comme ceci est le cas pour les surconsommations dans l'installation contrôlée, ladite surintensité provoque un plus grand échauffement du bimétal 26. Il en résulte une déflexion différentielle entre le bilame actif 26 et le bilame de compensation 27 qui permet de désactiver le dispositif d'accrochage 31.When an overcurrent occurs which exceeds the mentioned calibration limit, but does not reach the excessively high values as is the case for overconsumption in the controlled installation, said overcurrent causes a greater heating of the bimetal 26. It results in a differential deflection between the active bimetallic strip 26 and the bimetallic strip 27 which makes it possible to deactivate the fastening device 31.

Le ressort de rappel 32 entre en action de manière à entraîner la pièce 28 supportant le bilame de compensation 27 et ainsi, le bilame de compensation, en rotation autour de l'axe dit premier 29, vers une position dans laquelle celui-ci agit sur la barre de transfert 11.The return spring 32 comes into action so as to drive the piece 28 supporting the compensating bimetallic strip 27 and thus, the bimetallic strip, in rotation about the so-called first axis 29, towards a position in which it acts on the transfer bar 11.

Dans cette position illustrée sur la figure 6, les pièces dites première 34 et seconde 35 sont en position rapprochée, mais pas en contact. Ceci correspond à une position instantanée dans laquelle la pièce 28 a fini d'agir sur la pièce 11, mais dans laquelle l'ouverture des contacts n'a pas encore eu lieu.In this position illustrated on the figure 6 the so-called first 34 and second 35 pieces are in a close position, but not in contact. This corresponds to an instantaneous position in which the piece 28 has finished acting on the piece 11, but in which the opening of the contacts has not yet taken place.

Il s'ensuit une rotation du porte-contact 8 vers une position dans laquelle les contacts 7 sont ouverts, cette position étant illustrée sur la figure 7.It follows a rotation of the contact carrier 8 to a position in which the contacts 7 are open, this position being illustrated on the figure 7 .

Pendant cette rotation de l'arbre 8 porte-contacts mobiles dans le sens anti-horaire, vers la position d'ouverture des contacts fixes et mobiles 7, la pièce dite première 34 entre en contact avec la pièce dite seconde 35 et entraîne cette dernière et ainsi le bilame de compensation 27 dans une rotation dans le sens horaire jusqu'à rétablir l'accrochage entre les deux bilames 26,27, ce qui correspond à une position réarmée des bilames illustrée sur la figure 7.During this rotation of the shaft 8 movable contacts in the counterclockwise direction, towards the open position of the fixed and movable contacts 7, the so-called first part 34 comes into contact with the so-called second part 35 and causes this last and thus the bimetallic strip 27 in a rotation in the clockwise to restore the attachment between the two bimetals 26,27, which corresponds to a rearm position bimetallic illustrated on the figure 7 .

Le fonctionnement d'un dispositif selon la seconde réalisation dans laquelle les axes respectivement du support isolant et de l'arbre sont sensiblement perpendiculaires, est le même que pour la première réalisation décrite et ne sera donc pas décrit plus en détail.The operation of a device according to the second embodiment in which the axes respectively of the insulating support and the shaft are substantially perpendicular, is the same as for the first embodiment described and therefore will not be described in more detail.

Ainsi, l'on a réalisé selon l'invention un appareil de coupure du courant de conception simplifiée par le fait que le nombre de pièces utilisé est réduit, cette solution n'utilisant plus de tringles ou de pièces intermédiaires supplémentaires.Thus, it has been realized according to the invention a simplified design current cutting apparatus in that the number of parts used is reduced, this solution no longer using additional rods or additional parts.

Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et illustrés qui n'ont été donnés qu'à titre d'exemple.Of course, the invention is not limited to the embodiments described and illustrated which have been given by way of example.

C'est ainsi que l'invention s'applique à tout appareil électrique de coupure comportant un dispositif de protection thermique comportant un bilame actif et un bilame de compensation, et un arbre supportant des contacts mobiles.Thus, the invention applies to any electrical switching device comprising a thermal protection device comprising an active bimetallic and a bimetallic compensating, and a shaft supporting movable contacts.

Claims (10)

  1. Electric current breaking apparatus housed in an insulating housing and comprising at least one single-pole phase assembly (2, 3, 4, 5) and one control mechanism (1), said single-pole phase assembly comprising a breaking chamber housing a fixed contact and a moving contact (7), the different moving contacts (7) of the different assemblies being borne by a moving-contact-holding shaft (8), these moving contacts (7) being able to be brought into an opening position manually or automatically via, for each subassembly, a thermal protection device (10) suitable for actuating the control mechanism (1) so as to open the contacts upon the occurrence of an overcurrent in the circuit to be protected, the thermal protection device (10) comprising, on the one hand, a so-called active bimetal strip (26) suitable for producing an overheating when an overcurrent occurs above a certain level above the rated current value, this overheating leading to a thermal tripping of the control mechanism (1) of the apparatus so as to cause the contacts to open, and on the other hand, a so-called compensation bimetal strip (27) intended to compensate the variations that the changes of the ambient temperature determine in the temperature of the circuit, the two bimetal strips (26, 27) being secured to one another at one of their ends by means of an attachment device (31), this attachment device (31) being deactivated upon the occurrence of an overcurrent, this deactivation resulting in the actuation by the compensation bimetal strip (27) of the control mechanism (1), and rearming means suitable for returning the attachment device (31) to the activated position upon the opening of the contacts,
    characterized in that the compensation bimetal strip (27) is mounted to rotate about a so-called first fixed axis (29) belonging to a so-called first support of the apparatus (30), and in that the so-called second axis (33) of rotation of the moving-contact-holding shaft (8) and the so-called first axis (29) of rotation of the compensation bimetal strip, are brought in proximity to one another, and in that the moving-contact-holding shaft (8) comprises a so-called first part (34) co-operating with a so-called second part (35) secured in rotation to the compensation bimetal strip (27), these two parts (34, 35) being arranged relative to one another in such a way that, after a tripping of the mechanism (1), when the moving-contact-holding shaft (8) is driven in the direction of opening of the contacts (7), the so-called first part (34) drives said second part (35) and, therefore the compensation bimetal strip (27), in rotation in a direction opposite to that having resulted in the tripping of the mechanism (1), until the re-attachment of the two bimetal strips (26, 27) to one another is obtained.
  2. Apparatus according to Claim 1, characterized in that the so-called second axis (33) of rotation of the moving-contact-holding shaft (8) and the so-called first axis (29) of rotation of the compensation bimetal strip, extend substantially parallel to one another.
  3. Apparatus according to Claim 1, characterized in that the so-called second axis (33) of rotation of the moving-contact-holding shaft (8) and the so-called first axis (29) of rotation of the compensation bimetal strip, extend substantially at right angles to one another.
  4. Apparatus according to any one of Claims 1 to 3, characterized in that it comprises return means (32) for returning the compensation bimetal strip (27) to a position of tripping of the control mechanism (1).
  5. Apparatus according to any one of Claims 1 to 4, characterized in that the abovementioned compensation bimetal strip (27) is mounted in a so-called second insulating support (28), said insulating support (28) being mounted to rotate about the so-called first axis of rotation (29), and in that the so-called first part (34) co-operates with a part (35) of the abovementioned insulating support (28), forming the abovementioned so-called second part.
  6. Apparatus according to Claims 4 and 5, characterized in that these return means (32) comprise a spring bearing by one of its ends on the so-called first support (30) of the axis (29) of rotation of the compensation bimetal strip (27), and by its opposite end on the insulating support (28) housing the compensation bimetal strip (27).
  7. Apparatus according to any one of Claims 1 to 6, characterized in that the abovementioned so-called first part (34) and the so-called second part (35) are in the form of a nose.
  8. Apparatus according to any one of Claims 5 to 7, characterized in that the so-called first part (34) and the so-called second part (35) are of the same material respectively as the moving-contact-holding shaft (8) and as the so-called second insulating support (28).
  9. Apparatus according to any one of the preceding claims, characterized in that the so-called first support (30), and the moving-contact-holding shaft (8) are intended to be referenced and fixed on a plate P, said plate P comprising referencing means for an assembly of parts having a kinematic function, this assembly comprising the abovementioned control mechanism (1), the fixed contact(s), and a breaking containment part (17) called fringe.
  10. Electrical protection apparatus according to any one of the preceding claims, characterized in that it is a main circuit breaker intended to be inserted between a meter and an electrical switchboard.
EP20130188012 2012-12-14 2013-10-10 Electric current breaking apparatus, in particular a coupling breaker Active EP2743958B1 (en)

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FR1262046A FR2999789B1 (en) 2012-12-14 2012-12-14 APPARATUS FOR CURRENT ELECTRICAL CURRENT, IN PARTICULAR A CONNECTION CIRCUIT BREAKER.

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CN112234774B (en) * 2020-09-29 2023-06-13 浙江优力仕电驱动科技有限公司 Motor protection system
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US3234348A (en) * 1960-11-28 1966-02-08 Littelfuse Inc Circuit breaker with ambient temperature compensation
DE10113040B4 (en) * 2001-03-17 2017-02-09 Eaton Industries Gmbh Arrangement for thermal tripping with temperature compensation
US6542056B2 (en) * 2001-04-30 2003-04-01 Eaton Corporation Circuit breaker having a movable and illuminable arc fault indicator

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MA35396B1 (en) 2014-09-01
FR2999789B1 (en) 2015-03-27
FR2999789A1 (en) 2014-06-20
EP2743958A1 (en) 2014-06-18
PT2743958E (en) 2015-04-09
ES2538252T3 (en) 2015-06-18

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