EP3249673B1 - Mechanism for signalling an electrical fault in an electric protection device, and electric protection device including such a mechanism - Google Patents

Mechanism for signalling an electrical fault in an electric protection device, and electric protection device including such a mechanism Download PDF

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Publication number
EP3249673B1
EP3249673B1 EP17160475.4A EP17160475A EP3249673B1 EP 3249673 B1 EP3249673 B1 EP 3249673B1 EP 17160475 A EP17160475 A EP 17160475A EP 3249673 B1 EP3249673 B1 EP 3249673B1
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EP
European Patent Office
Prior art keywords
lever
fault
signalling
handle
indicator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17160475.4A
Other languages
German (de)
French (fr)
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EP3249673A1 (en
Inventor
Yves Belin
Emir BOUMEDIENE
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP3249673A1 publication Critical patent/EP3249673A1/en
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Publication of EP3249673B1 publication Critical patent/EP3249673B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • 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
    • 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
    • H01H2071/042—Means for indicating condition of the switching device with different indications for different conditions, e.g. contact position, overload, short circuit or earth leakage
    • 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
    • H01H2071/046—Means for indicating condition of the switching device exclusively by position of operating part, e.g. with additional labels or marks but no other movable indicators
    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

  • the present invention relates to a device for signaling the tripping of an electrical protection device such as a circuit breaker housed in an insulating box containing a pair of fixed and mobile contacts, said mobile contact being able to be actuated either manually by a handle mechanically connected to a device.
  • support of the movable contact said lever being mounted to pivot between a closed position and an open position of the contacts, either automatically by means of a trigger mechanism comprising a magnetic trip device capable of being activated upon occurrence a short-circuit fault and a thermal trip device able to be activated when an overload fault occurs, said movable contact support being mounted in rotation between an open position of the contacts and a closed position of the contacts.
  • first signaling means capable of tripping only on a short-circuit fault, as well as a device electrical protection device comprising such a device.
  • the present invention relates to a device for signaling an electrical fault in an electrical protection device, of simplified design, as well as to an electrical protection device comprising such a device.
  • the present invention relates to a signaling device of the type previously mentioned, the so-called first signaling means comprising means for blocking the aforementioned lever in an intermediate position situated between the two positions of the lever corresponding respectively to a position open and in a closed position of the device, upon the appearance of a fault of magnetic origin, these means being controlled by the movable core of the magnetic trip device, these means comprising a so-called first lever, said return, mounted articulated around a fixed axis relative to the housing of the device, this return lever comprising a first end part intended to cooperate with the movable core and a second end part intended to cooperate with the base of the lever, the aforementioned return lever cooperating with the movable core by means of a said second lever mounted articulated with respect to the housing of the apparatus, said second lever ier comprising a first end part mounted to rotate about an axis integral with the movable core and a second end part comprising a hooking element able to cooperate with a hooking element of complementary shape belonging to the first
  • this indicator is rotatably mounted relative to the housing of the device, said indicator cooperating with the said third end portion mentioned above of the return lever and comprising a surface visible to a user through an opening of the housing. the apparatus, this visible surface comprising means for indicating the presence or absence of a fault of magnetic origin as a function of the rotational position of this indicator.
  • this indicator comprises at least one colored surface portion on its visible surface, the appearance of this color through the opening of the case indicating the occurrence of a fault of magnetic origin.
  • this third end part comprises a rod comprising an axis, this axis being able to cooperate with a groove provided in the aforementioned indicator, such that the rotational drive of the return lever in one direction causes rotation in the opposite direction of the indicator.
  • this reset means comprises an element forming a finger projecting from said aforementioned surface of the indicator.
  • this third end part comprises an arm comprising an axis, this axis being able to cooperate with a groove provided in the aforementioned indicator, such that the driving in rotation of the return lever in one direction causes a rotation in the opposite direction of the indicator.
  • a further subject of the present invention is an electrical protection device comprising a signaling device comprising the previously mentioned characteristics taken alone or in combination.
  • this device comprises a signaling device comprising the previously mentioned characteristics taken alone or in combination, as well as a so-called second signaling means, able to signal the triggered state of the device regardless of the type of fault. , the activation of the two signaling means signaling a fault of the magnetic type, while the activation of a single signaling means signaling an overload fault.
  • this device is a circuit breaker.
  • this control device comprises a support device 3 for the movable contact 4 of the apparatus, this movable contact 4 cooperating with a fixed contact 5.
  • An opening 7 is provided in the front face 8 of the housing for the passage of a handle 6 mounted with limited pivoting on an axis 11 of the housing between a closed position in which the contacts 4,5 are closed, and a position of opening corresponding to the separation of the contacts.
  • the handle 6 is equipped with an internal base 9 coupled to a transmission rod 10 to constitute a toggle device whose articulation 12 is eccentric with respect to the fixed axis 11 of the handle 6.
  • the handle 6 is urged in the counterclockwise direction towards the open position of the contacts by a return spring (not shown).
  • the fixed contact 5 is secured to the frame of the electromagnetic release 13.
  • the movable contact 4 is fixed to the support device 3 of the movable contact 4, said support 3 being articulated on a pivot 14, the rotary plate 15 being mounted so as to rotate around the same. pivot 14.
  • a breakable mechanical connection is formed between the transmission rod 10 and the drive plate 15 of the contact support device 3 4.
  • the link allows manual control of the mechanism by lever 6.
  • the movement of the trigger lever 16 to the triggered position under the action of the triggers, causes the momentary rupture of the mechanical link, causing the automatic triggering of the mechanism. , independently of the handle 6.
  • the triggering lever 16 is associated with a return spring intended to ensure the automatic re-establishment of the mechanical link when the handle 6 is actuated towards the open position, following a triggering of the mechanism on fault.
  • the breakable mechanical connection comprises a hook 19 pivotally mounted on an axis 20 of the plate 15.
  • the spout 21 of the hook 19 cooperates in the locked position of the connection with a retaining notch 22 ( fig.4 ) located on the arm of the release lever 16.
  • the transmission rod 10 is coupled to the hook 19 and to the plate 15 at an articulation point 23 capable of moving during the release in two consecutive openings 24 and 26 of the plate 15. This point of articulation 23 is located between the axis of articulation 20 ( fig.3 ) of the hook 19 on the plate and the nozzle 21 ( fig.4 ) of the hooking hook.
  • the connection constitutes a reduction stage in the kinematic chain of the mechanism, allowing a reduction in the tripping force coming from the magnetothermal trip unit.
  • the hook 19 also comprises a bean-shaped or V-shaped opening 25 which, together with the openings 24 and 26 of the plate, are intended to allow the rotation of the contact carrier plate 15, during a triggering, while the rod 10 is blocked by handle 6, itself held in the contact closed position.
  • the opening 26 provided in the plate 15 also makes it possible to guide the travel of the rod when the lever returns to the open position of the contacts, after tripping.
  • the two openings 24, 26 of the plate 15 extend relative to each other so as to form a V.
  • the fault signaling device comprises a set of two levers respectively a so-called first lever 27 or a return lever intended to cooperate with the handle 6, and a said second lever 28 intended to cooperate with the movable core 29.
  • This said second lever 28 is mounted articulated about an axis 30 fixed relative to the housing of the device, said lever comprising two parts end 28a, 28b located on either side of said axis 30.
  • One of the end parts, called the first 28a, of this lever is mounted articulated around an end part 29a of the movable core 29 of the electromagnetic trigger 13, this end part of the movable core being located opposite the part of the striker 18 cooperating with the trigger lever 16, while the other end part 28b of this lever, called the second part end 28b, comprises a hooking element 33.
  • This hooking element 33 is intended to cooperate with a hooking element of complementary shape 34 belonging to the said first lever or return lever 27, which return lever 27 is mounted articulated around an axis 35 of the housing of the appa reil, such that, in the hooked position between the two levers 27,28, the rotation of the second lever 28 in the clockwise direction causes the rotation of the return lever 27 in the counterclockwise direction.
  • this return lever 27 comprises three end parts, namely respectively a first part 27a comprising the aforementioned fastening element 33, a second part 27b intended to cooperate with a signaling means 39 of a fault. magnetic origin, and a third part 27c intended to cooperate with the handle 6 as will be explained in what follows.
  • This second part 27b comprises a rod 37 comprising at its free end an axis 37a able to cooperate with a groove 39a belonging to an indicator element 39, which indicator 39 being mounted to rotate relative to another fixed axis 39b of the housing, so so that the rotation of the return lever 27 causes a corresponding rotation in the opposite direction of the indicator 39.
  • This indicator 39 ( fig.5 ) comprises a tubular portion 39c, from which extend, on either side of the aforementioned axis 39b, a U-shaped portion 39d and a finger member 39e.
  • the third part 27c of the return lever 27 comprises a branch 38a having at its free end a substantially planar surface 38b able to cooperate with a part of the base 9 of the lever 6.
  • the control device 2 is in an open position of the contacts 4,5, the handle 6 being in the open position.
  • the striker 18 is retracted inside the coil and the movable core 29 is in a position as far as possible from said coil.
  • the hooking system is activated between the two levers 27,28, the hooking element 34 of the said second lever 28 being engaged with the corresponding hooking element 33 belonging to the return lever 27, so that the signaling means 39 does not signal any fault of magnetic origin.
  • handle 6 is actuated to close contacts 4,5 ( fig.2 )
  • the latter moves the connecting rod 10 which bears on the plate 15 and on the hook 19.
  • the hook 19 is locked on the trigger bar (or lever).
  • the connecting rod 10, resting on the plate 15 and on the hook 19, causes the plate to pivot about its axis 14 until the contacts 4,5 close.
  • the rod continues to travel until it crosses the neutral point of the toggle formed by the lever 6 and the rod 10. Then, the mechanism assumes the equilibrium position which maintains the contacts closed. Switching the device from the open position ( fig.1 ) to the closed position ( fig.2 ) does not cause any change in the position of the signaling means 39, because the striker 18, and therefore the mobile core, has not been set in motion.
  • the handle 6 is actuated from the closed position shown in the figure. figure 2 until it crosses the dead center of the knee lifter in the other direction.
  • the mechanism then returns to the equilibrium position, with the contacts open, when the lever reaches the end of its travel, the position shown in the figure. figure 1 .
  • the trip bar 16 is actuated by the striker 18, as illustrated on the figure. figure 3 , the hook 19 is unlocked, but the lever 6 does not immediately return to its open position.
  • the mobile core 29 unlocks the hooking between the two levers 27,28.
  • the balance of the forces exerted by the link 10 on the mechanism is broken.
  • the plate 15 rotates around its axis 14 and opens the contacts, position shown in figure 4 .
  • the opening 25 provided inside the hook 19, allows the rotation of the hook around the axis 20 and this opening 25 of the hook as well as the openings 24,26 of the plate 15, allow the rotation of the plate, the handle still being held in the closed contacts position.
  • Unlocking the hooking between the two levers 27,28 causes the return lever 27 to rotate clockwise under the effect of a spring, not shown, returning the return lever 27 in the direction of the handle 6, this movement of the return lever driving the indicator 39 in a position in which it indicates the presence of a fault of magnetic origin.
  • the spring of the lever 6 returns the latter to the open position of the contacts and the rod 10 returns the hook 19 to the initial position.
  • the spring for biasing the hook 19 and resetting the bar 16 puts them back in a position that does not allow the hook to be locked on the bar when the handle is actuated to close the contacts.
  • the openings 24, 26 provided in the plate 15 participate in guiding the rod 10 so as to bring it back into the bearing position on the plate.
  • the lever 6 is hooked by means of its base 9 on the second hooking element 34 forming a pawl, which being released from its hooking with the second lever 28.
  • the signaling means constituted by the indicator 39 then signals the presence of a defect of magnetic origin by a change of color appearing on the outer surface portion 39f of the tubular part 39c, this outer surface portion 39f being located at right of the aforementioned finger 39th, looking head-on at the figure 5 .
  • the signaling will only appear on the faulty pole.
  • the removal of the signaling of the fault of magnetic origin will be effected by resetting the so-called secondary lever 39, formed by the aforementioned indicator, this resetting being effected by an action of driving said secondary lever in rotation by the user clockwise as shown on the figure 6 .
  • the invention applies to any electrical device comprising a mechanism of the type mentioned above, such as a circuit breaker, a switch, a differential switch, a disconnector, auxiliary contacts, etc.

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Description

DOMAINE TECHNIQUETECHNICAL AREA

La présente invention concerne un dispositif de signalisation du déclenchement d'un appareil de protection électrique tel un disjoncteur logé dans un boîtier isolant renfermant une paire de contacts fixe et mobile, ledit contact mobile pouvant être actionné soit manuellement par une manette reliée mécaniquement à un dispositif de support du contact mobile, ladite manette étant montée à pivotement entre une position de fermeture et une position d'ouverture des contacts, soit automatiquement par l'intermédiaire d'un mécanisme de déclenchement comportant un déclencheur magnétique apte à être activé lors de la survenue d'un défaut de court-circuit et un déclencheur thermique apte à être activé lors de la survenue d'un défaut de surcharge, ledit support de contact mobile étant monté en rotation entre une position d'ouverture des contacts et une position de fermeture des contacts et relié à la manette par un moyen de transmission de manière à former entre le support et la manette une liaison mécanique brisable, l'activation de l'un des déclencheurs entraînant la rupture de la liaison mécanique entraînant la séparation des contacts, et des moyens de signalisation dits premiers aptes à ne déclencher que sur un défaut de court-circuit, ainsi qu'un appareil de protection électrique comportant un tel dispositif.The present invention relates to a device for signaling the tripping of an electrical protection device such as a circuit breaker housed in an insulating box containing a pair of fixed and mobile contacts, said mobile contact being able to be actuated either manually by a handle mechanically connected to a device. support of the movable contact, said lever being mounted to pivot between a closed position and an open position of the contacts, either automatically by means of a trigger mechanism comprising a magnetic trip device capable of being activated upon occurrence a short-circuit fault and a thermal trip device able to be activated when an overload fault occurs, said movable contact support being mounted in rotation between an open position of the contacts and a closed position of the contacts. contacts and connected to the handle by a transmission means so as to form a link between the support and the handle breakable mechanical, the activation of one of the trip units causing the breaking of the mechanical link causing the separation of the contacts, and so-called first signaling means capable of tripping only on a short-circuit fault, as well as a device electrical protection device comprising such a device.

ETAT DE LA TECHNIQUE ANTERIEURESTATE OF THE PRIOR ART

On connaît le document EP 2 975 628 décrivant un dispositif comportant deux moyens de signalisation respectivement deux indicateurs sous la forme de deux voyants, l'un des voyants étant destiné à signaler la présence d'un défaut d'origine magnétique, l'autre des voyants étant destiné à indiquer tout type de défaut.
On connaît également le document EP 1 906 426 décrivant un dispositif de signalisation comportant les caractéristiques du préambule de la nouvelle revendication 1.We know the document EP 2 975 628 describing a device comprising two signaling means respectively two indicators in the form of two indicator lights, one of the indicator lights being intended to signal the presence of a fault of magnetic origin, the other indicator being intended to indicate any type of fault.
We also know the document EP 1 906 426 describing a signaling device comprising the characteristics of the preamble of the new claim 1.

EXPOSE DE L'INVENTIONDISCLOSURE OF THE INVENTION

La présente invention concerne un dispositif de signalisation d'un défaut électrique dans un appareil de protection électrique, de conception simplifiée, ainsi qu'un appareil de protection électrique comportant un tel dispositif.The present invention relates to a device for signaling an electrical fault in an electrical protection device, of simplified design, as well as to an electrical protection device comprising such a device.

A cet effet, la présente invention a pour objet un dispositif de signalisation du genre précédemment mentionné, les moyens de signalisation dits premiers comportant des moyens pour bloquer la manette précitée dans une position intermédiaire située entre les deux positions de la manette correspondant respectivement à une position ouverte et à une position fermée de l'appareil, lors de l'apparition d'un défaut d'origine magnétique, ces moyens étant commandés par le noyau mobile du déclencheur magnétique, ces moyens comportant un levier dit premier, dit de renvoi, monté articulé autour d'un axe fixe par rapport au boîtier de l'appareil, ce levier de renvoi comportant une première partie d'extrémité destinée à coopérer avec le noyau mobile et une seconde partie d'extrémité destinée à coopérer avec l'embase de la manette, le levier de renvoi précité coopérant avec le noyau mobile par l'intermédiaire d'un levier dit second monté articulé par rapport au boîtier de l'appareil, ledit second levier comportant une première partie d'extrémité montée à rotation autour d'un axe solidaire du noyau mobile et une seconde partie d'extrémité comportant un élément d'accrochage apte à coopérer avec un élément d'accrochage de forme complémentaire appartenant à la première partie d'extrémité précitée du levier de renvoi, de telle manière que la position d'accrochage des deux leviers l'un par rapport à l'autre corresponde à une position fermée des contacts lors d'un fonctionnement normal de l'appareil, et que lors de l'apparition d'un défaut d'origine magnétique, le déplacement du noyau mobile entraîne le désengagement des deux éléments d'accrochage l'un par rapport à l'autre, ce désengagement permettant le rappel du levier de renvoi dans une position de blocage de la manette dans la position intermédiaire précitée, ce dispositif étant caractérisé en ce que le levier de renvoi précité comporte une partie d'extrémité dite troisième apte à coopérer avec un indicateur de manière à signaler la présence ou non d'un défaut d'origine magnétique, et en ce que cet indicateur comporte un moyen de réinitialisation apte à être manœuvré par un utilisateur de manière à rappeler le levier de renvoi dans une position d'accrochage avec le levier dit second, après le blocage de la manette en position intermédiaire, ceci afin de libérer la manette et permettre la poursuite de son déplacement vers la position ouverte.
Ceci empêche la refermeture de l'appareil si la réinitialisation n'a pas été réalisée.To this end, the present invention relates to a signaling device of the type previously mentioned, the so-called first signaling means comprising means for blocking the aforementioned lever in an intermediate position situated between the two positions of the lever corresponding respectively to a position open and in a closed position of the device, upon the appearance of a fault of magnetic origin, these means being controlled by the movable core of the magnetic trip device, these means comprising a so-called first lever, said return, mounted articulated around a fixed axis relative to the housing of the device, this return lever comprising a first end part intended to cooperate with the movable core and a second end part intended to cooperate with the base of the lever, the aforementioned return lever cooperating with the movable core by means of a said second lever mounted articulated with respect to the housing of the apparatus, said second lever ier comprising a first end part mounted to rotate about an axis integral with the movable core and a second end part comprising a hooking element able to cooperate with a hooking element of complementary shape belonging to the first part of the aforementioned end of the return lever, so that the hooking position of the two levers relative to each other corresponds to a closed position of the contacts during normal operation of the device, and that upon the appearance of a fault of magnetic origin, the displacement of the mobile core causes the disengagement of the two fastening elements with respect to each other, this disengagement allowing the return of the return lever to a locking position of the lever in the aforementioned intermediate position, this device being characterized in that the aforementioned return lever comprises a so-called third end portion capable of cooperating with an indicator so to signal the presence or absence of a fault of magnetic origin, and in that this indicator comprises a reset means capable of being operated by a user so as to return the return lever to a position of hooking with the lever said second, after locking the lever in the intermediate position, in order to release the lever and allow its movement to continue towards the open position.
This prevents the device from being closed again if the reset has not been carried out.

Selon une autre caractéristique, cet indicateur est monté rotatif par rapport au boîtier de l'appareil, ledit indicateur coopérant avec la partie d'extrémité dite troisième précitée du levier de renvoi et comportant une surface visible par un utilisateur à travers une ouverture du boîtier de l'appareil, cette surface visible comportant un moyen pour indiquer la présence ou l'absence d'un défaut d'origine magnétique en fonction de la position en rotation de cet indicateur.According to another characteristic, this indicator is rotatably mounted relative to the housing of the device, said indicator cooperating with the said third end portion mentioned above of the return lever and comprising a surface visible to a user through an opening of the housing. the apparatus, this visible surface comprising means for indicating the presence or absence of a fault of magnetic origin as a function of the rotational position of this indicator.

Selon une autre caractéristique, cet indicateur comporte au moins une portion de surface colorée sur sa surface visible, l'apparition de cette couleur à travers l'ouverture du boîtier indiquant la survenue d'un défaut d'origine magnétique.According to another characteristic, this indicator comprises at least one colored surface portion on its visible surface, the appearance of this color through the opening of the case indicating the occurrence of a fault of magnetic origin.

Selon une caractéristique particulière, cette troisième partie d'extrémité comporte une tige comportant un axe, cet axe étant apte à coopérer avec une rainure prévue dans l'indicateur précité, de telle manière que l'entraînement en rotation du levier de renvoi dans un sens entraîne une rotation dans un sens opposé de l'indicateur.According to one particular characteristic, this third end part comprises a rod comprising an axis, this axis being able to cooperate with a groove provided in the aforementioned indicator, such that the rotational drive of the return lever in one direction causes rotation in the opposite direction of the indicator.

Avantageusement, ce moyen de réinitialisation comporte un élément formant doigt en saillie sur ladite surface précitée de l'indicateur.Advantageously, this reset means comprises an element forming a finger projecting from said aforementioned surface of the indicator.

Selon une autre caractéristique cette troisième partie d'extrémité comporte un bras comportant un axe, cet axe étant apte à coopérer avec un rainure prévue dans l'indicateur précité, de telle manière que l'entraînement en rotation du levier de renvoi dans un sens entraîne une rotation dans un sens opposé de l'indicateur.According to another characteristic, this third end part comprises an arm comprising an axis, this axis being able to cooperate with a groove provided in the aforementioned indicator, such that the driving in rotation of the return lever in one direction causes a rotation in the opposite direction of the indicator.

La présente invention a encore pour objet un appareil de protection électrique comportant un dispositif de signalisation comportant les caractéristiques précédemment mentionnées prises seules ou en combinaison.A further subject of the present invention is an electrical protection device comprising a signaling device comprising the previously mentioned characteristics taken alone or in combination.

Selon une autre caractéristique, cet appareil comporte un dispositif de signalisation comportant les caractéristiques précédemment mentionnées prises seules ou en combinaison, ainsi qu'un moyen de signalisation dit second, apte à signaler l'état déclenché de l'appareil quelque soit le type de défaut, l'activation des deux moyens de signalisation signalant un défaut du type magnétique, tandis que l'activation d'un seul moyen de signalisation signalant un défaut de surcharge.According to another characteristic, this device comprises a signaling device comprising the previously mentioned characteristics taken alone or in combination, as well as a so-called second signaling means, able to signal the triggered state of the device regardless of the type of fault. , the activation of the two signaling means signaling a fault of the magnetic type, while the activation of a single signaling means signaling an overload fault.

Selon une réalisation particulière, cet appareil est un disjoncteur.According to a particular embodiment, this device is a circuit breaker.

BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

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 partielle en plan, illustrant un appareil de protection électrique comportant un dispositif de signalisation d'un défaut électrique selon l'invention, en position ouverte des contacts de l'appareil,
  • La figure 2 est une vue similaire à la précédente, en position fermée des contacts de l'appareil,
  • La figure 3 est une vue similaire à la précédente, lors de l'apparition d'un défaut d'origine magnétique, l'appareil étant encore en position fermée,
  • La figure 4 est une vue similaire à la précédente, après l'ouverture du mécanisme de l'appareil,
  • La figure 5 est une vue similaire à la précédente, en position de signalisation du défaut, et
  • La figure 6 est une vue similaire aux précédentes, destinée à illustrer la manœuvre destinée à supprimer la signalisation du défaut.
However, other advantages and characteristics of the invention will appear more clearly in the detailed description which follows and refers to the appended drawings given solely by way of example and in which:
  • The figure 1 is a partial plan view, illustrating an electrical protection device comprising an electrical fault signaling device according to the invention, in the open position of the device contacts,
  • The figure 2 is a view similar to the previous one, in the closed position of the device contacts,
  • The figure 3 is a view similar to the previous one, when a fault of magnetic origin appears, the device still being in the closed position,
  • The figure 4 is a view similar to the previous one, after opening the device mechanism,
  • The figure 5 is a view similar to the previous one, in the fault signaling position, and
  • The figure 6 is a view similar to the previous ones, intended to illustrate the maneuver intended to suppress the fault signaling.

Sur les figures, on voit un disjoncteur électrique miniature multipolaire à boîtier isolant 1 moulé connu notamment par le brevet EP 1 975 971 et comportant par pôle, un dispositif de commande 2 des contacts de l'appareil, ce dispositif de commande comportant un dispositif de signalisation d'un défaut selon l'invention. De manière connue en soi, ce dispositif de commande comporte un dispositif de support 3 du contact mobile 4 de l'appareil, ce contact mobile 4 coopérant avec un contact fixe 5.
Une ouverture 7 est prévue dans la face avant 8 du boîtier pour le passage d'une manette 6 montée à pivotement limité sur un axe 11 du boîtier entre une position de fermeture dans laquelle les contacts 4,5 sont fermés, et une position d'ouverture correspondant à la séparation des contacts. La manette 6 est équipée d'une embase interne 9 accouplée à une biellette de transmission 10 pour constituer un dispositif à genouillère dont l'articulation 12 se trouve excentrée par rapport à l'axe fixe 11 de la manette 6.
La manette 6 est sollicitée dans le sens trigonométrique vers la position d'ouverture des contacts par un ressort de rappel (non représenté). Le contact fixe 5 est solidarisé à la carcasse du déclencheur électromagnétique 13. Le contact mobile 4 est fixé au dispositif de support 3 du contact mobile 4, ledit support 3 étant articulé sur un pivot 14, la platine rotative 15 étant montée rotative autour du même pivot 14.
Un levier de déclenchement 16 piloté par le percuteur 18 du déclencheur électromagnétique 13 et la bilame du déclencheur thermique (non représenté) ou d'un auxiliaire externe, est monté à pivotement sur un axe 17 porté par la platine 15 avec un décalage prédéterminé par rapport au pivot précité 14.In the figures, we see a multipolar miniature electrical circuit breaker with a molded insulating case 1 known in particular from the patent. EP 1 975 971 and comprising per pole, a control device 2 for the contacts of the apparatus, this control device comprising a device for signaling a fault according to the invention. In a manner known per se, this control device comprises a support device 3 for the movable contact 4 of the apparatus, this movable contact 4 cooperating with a fixed contact 5.
An opening 7 is provided in the front face 8 of the housing for the passage of a handle 6 mounted with limited pivoting on an axis 11 of the housing between a closed position in which the contacts 4,5 are closed, and a position of opening corresponding to the separation of the contacts. The handle 6 is equipped with an internal base 9 coupled to a transmission rod 10 to constitute a toggle device whose articulation 12 is eccentric with respect to the fixed axis 11 of the handle 6.
The handle 6 is urged in the counterclockwise direction towards the open position of the contacts by a return spring (not shown). The fixed contact 5 is secured to the frame of the electromagnetic release 13. The movable contact 4 is fixed to the support device 3 of the movable contact 4, said support 3 being articulated on a pivot 14, the rotary plate 15 being mounted so as to rotate around the same. pivot 14.
A trigger lever 16 controlled by the striker 18 of the electromagnetic trigger 13 and the bimetallic strip of the thermal trigger (not shown) or of an external auxiliary, is pivotally mounted on a pin 17 carried by the plate 15 with a predetermined offset relative to to the aforementioned pivot 14.

Une liaison mécanique brisable est ménagée entre la biellette de transmission 10 et la platine 15 d'entraînement du dispositif de support 3 de contact 4.
En position verrouillée, la liaison autorise la commande manuelle du mécanisme par la manette 6. Le déplacement du levier de déclenchement 16 vers la position déclenchée sous l'action des déclencheurs, provoque la rupture momentanée de la liaison mécanique, entraînant le déclenchement automatique du mécanisme, indépendamment de la manette 6. Le levier de déclenchement 16 est associé à un ressort de rappel destiné à assurer le rétablissement automatique de la liaison mécanique lorsque la manette 6 est actionnée vers la position d'ouverture, suite à un déclenchement du mécanisme sur défaut.
La liaison mécanique brisable comporte un crochet 19 monté à pivotement sur un axe 20 de la platine 15. A l'opposé de cet axe, le bec 21 du crochet 19 coopère en position verrouillée de la liaison avec un cran de retenue 22 (fig.4) situé sur le bras du levier de déclenchement 16. La biellette de transmission 10 est accouplée au crochet 19 et à la platine 15 en un point d'articulation 23 susceptible de se déplacer lors du déclenchement dans deux ouvertures 24 et 26 consécutives de la platine 15. Ce point d'articulation 23 est situé entre l'axe d'articulation 20 (fig.3) du crochet 19 sur la platine et le bec 21 (fig.4) du crochet d'accrochage. La liaison constitue un étage démultiplicateur dans la chaîne cinématique du mécanisme, autorisant une réduction de l'effort de déclenchement en provenance du déclencheur magnétothermique.
Le crochet 19 comporte également une ouverture de forme en haricot ou de V 25 laquelle, avec les ouvertures 24 et 26 de la platine, sont destinées à autoriser la rotation de la platine porte-contact 15, lors d'un déclenchement, alors que la biellette 10 est bloquée par la manette 6, elle-même maintenue en position de fermeture des contacts.
L'ouverture 26 prévue dans la platine 15 permet également de guider la course de la biellette lorsque la manette revient en position d'ouverture des contacts, après un déclenchement. Les deux ouvertures 24,26 de la platine 15 s'étendent l'une par rapport à l'autre de manière à former un V.
Le dispositif de signalisation d'un défaut selon l'invention comporte un ensemble de deux leviers respectivement un levier dit premier 27 ou de renvoi destiné à coopérer avec la manette 6, et un levier dit second 28 destiné à coopérer avec le noyau mobile 29. Ce levier dit second 28 est monté articulé autour d'un axe 30 fixe par rapport au boîtier de l'appareil, ledit levier comportant deux parties d'extrémité 28a, 28b situées de part et d'autre dudit axe 30. L'une des parties d'extrémité, dite première 28a, de ce levier, est montée articulée autour d'une partie d'extrémité 29a du noyau mobile 29 du déclencheur électromagnétique 13, cette partie d'extrémité du noyau mobile étant située à l'opposé de la partie du percuteur 18 coopérant avec le levier de déclenchement 16, tandis que l'autre partie d'extrémité 28b de ce levier, dite seconde partie d'extrémité 28b, comporte un élément d'accrochage 33. Cet élément d'accrochage 33 est destiné à coopérer avec un élément d'accrochage de forme complémentaire 34 appartenant au levier dit premier ou levier de renvoi 27, lequel levier de renvoi 27 est monté articulé autour d'un axe 35 du boîtier de l'appareil, de telle manière que, en position d'accrochage entre les deux leviers 27,28, la rotation du second levier 28 dans le sens horaire entraîne la rotation du levier de renvoi 27 dans le sens anti-horaire. Ainsi (fig.4), ce levier de renvoi 27 comporte trois parties d'extrémité, à savoir respectivement une première partie 27a comportant l'élément d'accrochage précité 33, une seconde partie 27b destinée à coopérer avec un moyen de signalisation 39 d'un défaut d'origine magnétique, et une troisième partie 27c destinée à coopérer avec la manette 6 comme ceci sera expliqué dans ce qui suit. Cette seconde partie 27b comporte une tige 37 comportant à son extrémité libre un axe 37a apte à coopérer avec une rainure 39a appartenant à un élément formant indicateur 39, lequel indicateur 39 étant monté rotatif par rapport à un autre axe fixe 39b du boîtier, de telle manière que la rotation du levier de renvoi 27 entraîne une rotation correspondante en sens inverse de l'indicateur 39.
Cet indicateur 39 (fig.5) comporte une portion tubulaire 39c, à partir de laquelle s'étendent, de part et d'autre de l'axe précité 39b, une portion en U 39d et un élément formant doigt 39e.
La troisième partie 27c du levier de renvoi 27 comporte une branche 38a présentant à son extrémité libre une surface 38b sensiblement plane apte à coopérer avec une partie de l'embase 9 de la manette 6.A breakable mechanical connection is formed between the transmission rod 10 and the drive plate 15 of the contact support device 3 4.
In the locked position, the link allows manual control of the mechanism by lever 6. The movement of the trigger lever 16 to the triggered position under the action of the triggers, causes the momentary rupture of the mechanical link, causing the automatic triggering of the mechanism. , independently of the handle 6. The triggering lever 16 is associated with a return spring intended to ensure the automatic re-establishment of the mechanical link when the handle 6 is actuated towards the open position, following a triggering of the mechanism on fault. .
The breakable mechanical connection comprises a hook 19 pivotally mounted on an axis 20 of the plate 15. Opposite this axis, the spout 21 of the hook 19 cooperates in the locked position of the connection with a retaining notch 22 ( fig.4 ) located on the arm of the release lever 16. The transmission rod 10 is coupled to the hook 19 and to the plate 15 at an articulation point 23 capable of moving during the release in two consecutive openings 24 and 26 of the plate 15. This point of articulation 23 is located between the axis of articulation 20 ( fig.3 ) of the hook 19 on the plate and the nozzle 21 ( fig.4 ) of the hooking hook. The connection constitutes a reduction stage in the kinematic chain of the mechanism, allowing a reduction in the tripping force coming from the magnetothermal trip unit.
The hook 19 also comprises a bean-shaped or V-shaped opening 25 which, together with the openings 24 and 26 of the plate, are intended to allow the rotation of the contact carrier plate 15, during a triggering, while the rod 10 is blocked by handle 6, itself held in the contact closed position.
The opening 26 provided in the plate 15 also makes it possible to guide the travel of the rod when the lever returns to the open position of the contacts, after tripping. The two openings 24, 26 of the plate 15 extend relative to each other so as to form a V.
The fault signaling device according to the invention comprises a set of two levers respectively a so-called first lever 27 or a return lever intended to cooperate with the handle 6, and a said second lever 28 intended to cooperate with the movable core 29. This said second lever 28 is mounted articulated about an axis 30 fixed relative to the housing of the device, said lever comprising two parts end 28a, 28b located on either side of said axis 30. One of the end parts, called the first 28a, of this lever, is mounted articulated around an end part 29a of the movable core 29 of the electromagnetic trigger 13, this end part of the movable core being located opposite the part of the striker 18 cooperating with the trigger lever 16, while the other end part 28b of this lever, called the second part end 28b, comprises a hooking element 33. This hooking element 33 is intended to cooperate with a hooking element of complementary shape 34 belonging to the said first lever or return lever 27, which return lever 27 is mounted articulated around an axis 35 of the housing of the appa reil, such that, in the hooked position between the two levers 27,28, the rotation of the second lever 28 in the clockwise direction causes the rotation of the return lever 27 in the counterclockwise direction. So ( fig.4 ), this return lever 27 comprises three end parts, namely respectively a first part 27a comprising the aforementioned fastening element 33, a second part 27b intended to cooperate with a signaling means 39 of a fault. magnetic origin, and a third part 27c intended to cooperate with the handle 6 as will be explained in what follows. This second part 27b comprises a rod 37 comprising at its free end an axis 37a able to cooperate with a groove 39a belonging to an indicator element 39, which indicator 39 being mounted to rotate relative to another fixed axis 39b of the housing, so so that the rotation of the return lever 27 causes a corresponding rotation in the opposite direction of the indicator 39.
This indicator 39 ( fig.5 ) comprises a tubular portion 39c, from which extend, on either side of the aforementioned axis 39b, a U-shaped portion 39d and a finger member 39e.
The third part 27c of the return lever 27 comprises a branch 38a having at its free end a substantially planar surface 38b able to cooperate with a part of the base 9 of the lever 6.

Le fonctionnement du dispositif de signalisation selon l'invention va être décrit ci-après en référence aux figures.
Sur la figure 1, le dispositif de commande 2 est dans une position ouverte des contacts 4,5, la manette 6 étant en position d'ouverture.
Dans cette position, le percuteur 18 est escamoté à l'intérieur de la bobine et le noyau mobile 29 se trouve dans une position éloignée au maximum de ladite bobine. Le système d'accrochage est activé entre les deux leviers 27,28, l'élément d'accrochage 34 du levier dit second 28 étant en prise avec l'élément d'accrochage correspondant 33 appartenant au levier de renvoi 27, de manière que le moyen de signalisation 39 ne signale aucun défaut d'origine magnétique. Lorsque la manette 6 est actionnée pour réaliser la fermeture des contacts 4,5 (fig.2), celle-ci déplace la biellette 10 qui vient en appui sur la platine 15 et sur le crochet 19. Le crochet 19 est verrouillé sur la barre (ou levier) de déclenchement. La biellette 10 en appui sur la platine 15 et sur le crochet 19, fait pivoter la platine autour de son axe 14 jusqu'à la fermeture des contacts 4,5.
La biellette poursuit sa course jusqu'au franchissement du point mort de la genouillère formée par la manette 6 et la biellette 10. Puis, le mécanisme prend la position d'équilibre qui maintient les contacts fermés. Le passage de l'appareil de la position ouverte (fig.1) à la position fermée (fig.2) n'entraîne aucune modification de la position du moyen de signalisation 39, car le percuteur 18, et donc le noyau mobile, n'a pas été mis en mouvement.The operation of the signaling device according to the invention will be described below with reference to the figures.
On the figure 1 , the control device 2 is in an open position of the contacts 4,5, the handle 6 being in the open position.
In this position, the striker 18 is retracted inside the coil and the movable core 29 is in a position as far as possible from said coil. The hooking system is activated between the two levers 27,28, the hooking element 34 of the said second lever 28 being engaged with the corresponding hooking element 33 belonging to the return lever 27, so that the signaling means 39 does not signal any fault of magnetic origin. When handle 6 is actuated to close contacts 4,5 ( fig.2 ), the latter moves the connecting rod 10 which bears on the plate 15 and on the hook 19. The hook 19 is locked on the trigger bar (or lever). The connecting rod 10, resting on the plate 15 and on the hook 19, causes the plate to pivot about its axis 14 until the contacts 4,5 close.
The rod continues to travel until it crosses the neutral point of the toggle formed by the lever 6 and the rod 10. Then, the mechanism assumes the equilibrium position which maintains the contacts closed. Switching the device from the open position ( fig.1 ) to the closed position ( fig.2 ) does not cause any change in the position of the signaling means 39, because the striker 18, and therefore the mobile core, has not been set in motion.

Pour ouvrir les contacts 4,5 manuellement, la manette 6 est actionnée à partir de la position fermée illustrée sur la figure 2 jusqu'à ce qu'elle franchisse le point mort de la genouillère dans l'autre sens. Le mécanisme rejoint alors la position d'équilibre, les contacts étant ouverts, lorsque la manette atteint la fin de sa course, position représentée sur la figure 1.
Lorsque les contacts sont fermés et sous l'effet de l'apparition d'un défaut d'origine magnétique, la barre de déclenchement 16 est actionnée par le percuteur 18, tel qu'illustré sur la figure 3, le crochet 19 est déverrouillé, mais la manette 6 ne revient pas tout de suite vers sa position d'ouverture.
Dans un même temps, le noyau mobile 29 déverrouille l'accrochage entre les deux leviers 27,28.To open the contacts 4,5 manually, the handle 6 is actuated from the closed position shown in the figure. figure 2 until it crosses the dead center of the knee lifter in the other direction. The mechanism then returns to the equilibrium position, with the contacts open, when the lever reaches the end of its travel, the position shown in the figure. figure 1 .
When the contacts are closed and under the effect of the appearance of a fault of magnetic origin, the trip bar 16 is actuated by the striker 18, as illustrated on the figure. figure 3 , the hook 19 is unlocked, but the lever 6 does not immediately return to its open position.
At the same time, the mobile core 29 unlocks the hooking between the two levers 27,28.

L'équilibre des forces exercées par la biellette 10 sur le mécanisme est rompu. La platine 15 tourne autour de son axe 14 et elle ouvre les contacts, position représentée sur la figure 4. L'ouverture 25 prévue à l'intérieur du crochet 19, autorise la rotation du crochet autour de l'axe 20 et cette ouverture 25 du crochet ainsi que les ouvertures 24,26 de la platine 15, autorisent la rotation de la platine, la manette étant encore maintenue en position des contacts fermés.
Le déverrouillage de l'accrochage entre les deux leviers 27,28 entraîne la rotation du levier de renvoi 27 dans le sens horaire sous l'effet d'un ressort non représenté rappelant le levier de renvoi 27 en direction de la manette 6, ce mouvement du levier de renvoi entraînant l'indicateur 39 dans une position dans laquelle il indique la présence d'un défaut d'origine magnétique.
Puis dans un même temps, tel qu'illustré sur la figure 5, le ressort de la manette 6 ramène cette dernière vers la position ouverte des contacts et la biellette 10 ramène le crochet 19 en position initiale. Le ressort de polarisation du crochet 19 et de réarmement de la barre 16 les replace dans une position ne permettant pas le verrouillage du crochet sur la barre lorsque la manette sera actionnée pour refermer les contacts. Les ouvertures 24,26 prévues dans la platine 15 participent au guidage de la biellette 10 de façon à la ramener en position d'appui sur la platine.
Lors de son retour, la manette 6 s'accroche par l'intermédiaire de son embase 9 sur le second élément d'accrochage 34 formant cliquet, lequel étant libéré de son accrochage avec le second levier 28.
Le moyen de signalisation constitué par l'indicateur 39 signale alors la présence d'un défaut d'origine magnétique par un changement de couleur apparaissant sur la portion de surface extérieure 39f de la partie tubulaire 39c, cette portion de surface extérieure 39f étant située à droite du doigt précité 39e, en regardant de face la figure 5.
On notera que dans le cas d'un disjoncteur multipolaire, la signalisation n'apparaîtra que sur le pôle en défaut.
La suppression de la signalisation du défaut d'origine magnétique s'effectuera par réarmement de la manette 39 dite secondaire, formée par l'indicateur précité, ce réarmement s'effectuant par une action d'entraînement en rotation de ladite manette secondaire par l'utilisateur dans le sens horaire tel qu'illustré sur la figure 6. Cette rotation de la manette secondaire 39 dans le sens horaire entraînera la rotation dans le sens anti-horaire du levier de renvoi 27, ce qui entraînera la libération de l'accrochage entre le levier de renvoi 27 et la manette principale 6. Cette libération de cet accrochage permettra le retour de la manette principale du disjoncteur en position ouverte.
L'invention s'applique à tout appareil électrique comportant un mécanisme du type précédemment mentionné, tels un disjoncteur, un interrupteur, un interrupteur différentiel, un sectionneur, des contacts auxiliaires etc.....The balance of the forces exerted by the link 10 on the mechanism is broken. The plate 15 rotates around its axis 14 and opens the contacts, position shown in figure 4 . The opening 25 provided inside the hook 19, allows the rotation of the hook around the axis 20 and this opening 25 of the hook as well as the openings 24,26 of the plate 15, allow the rotation of the plate, the handle still being held in the closed contacts position.
Unlocking the hooking between the two levers 27,28 causes the return lever 27 to rotate clockwise under the effect of a spring, not shown, returning the return lever 27 in the direction of the handle 6, this movement of the return lever driving the indicator 39 in a position in which it indicates the presence of a fault of magnetic origin.
Then at the same time, as illustrated on the figure 5 , the spring of the lever 6 returns the latter to the open position of the contacts and the rod 10 returns the hook 19 to the initial position. The spring for biasing the hook 19 and resetting the bar 16 puts them back in a position that does not allow the hook to be locked on the bar when the handle is actuated to close the contacts. The openings 24, 26 provided in the plate 15 participate in guiding the rod 10 so as to bring it back into the bearing position on the plate.
On its return, the lever 6 is hooked by means of its base 9 on the second hooking element 34 forming a pawl, which being released from its hooking with the second lever 28.
The signaling means constituted by the indicator 39 then signals the presence of a defect of magnetic origin by a change of color appearing on the outer surface portion 39f of the tubular part 39c, this outer surface portion 39f being located at right of the aforementioned finger 39th, looking head-on at the figure 5 .
Note that in the case of a multi-pole circuit breaker, the signaling will only appear on the faulty pole.
The removal of the signaling of the fault of magnetic origin will be effected by resetting the so-called secondary lever 39, formed by the aforementioned indicator, this resetting being effected by an action of driving said secondary lever in rotation by the user clockwise as shown on the figure 6 . This clockwise rotation of the secondary lever 39 will cause the counterclockwise rotation of the return lever 27, which will release the latch between the return lever 27 and the main lever 6. This release of this hooking will allow the main handle of the circuit breaker to return to the open position.
The invention applies to any electrical device comprising a mechanism of the type mentioned above, such as a circuit breaker, a switch, a differential switch, a disconnector, auxiliary contacts, etc.

Claims (8)

  1. Device for signalling the tripping of an electrical protection unit such as a circuit breaker housed in an insulating housing enclosing a pair of fixed and movable contacts, said movable contact being able to be actuated either manually by a handle linked mechanically to a movable contact support device, said handle being mounted to pivot between a position of closure and a position of opening of the contacts, or automatically via a trip mechanism comprising a magnetic trip with a mobile core that can be activated upon the occurrence of a short-circuit fault and a thermal trip that can be activated upon the occurrence of an overload fault, said movable contact support being mounted to rotate between a position of opening of the contacts and a position of closure of the contacts and linked to the handle by a transmission means so as to form, between the support and the handle, a breakable mechanical link, the activation of one of the trips leading to the breaking of the mechanical link resulting in the separation of the contacts, and so-called first signalling means that can be triggered only upon a short-circuit fault, the so-called first signalling means (S) comprising means for blocking the abovementioned handle (6) in an intermediate position situated between the two positions of the handle corresponding respectively to an open position and a closed position of the unit, upon the occurrence of a fault of magnetic origin, these means being controlled by the mobile core (29) of the magnetic trip (13), these means comprising a so-called first lever (27), called return lever, mounted articulated about an axis (35) that is fixed relative to the housing (1) of the device, this return lever (27) comprising a first end part (27a) intended to cooperate with the mobile core (29) and a second end part (27b) intended to cooperate with the base (9) of the handle (6), the abovementioned return lever (27) cooperating with the mobile core (29) via a so-called second lever (28) mounted articulated relative to the housing (1) of the unit, said second lever (28) comprising a first end part (28a) mounted to rotate about an axis secured to the mobile core (29) and a second end part (28b) comprising an attachment element (34) that can cooperate with an attachment element (33) of complementary form belonging to the above-mentioned first end part (27a) of the return lever (27), so that the position of attachment of the two levers (27, 28) relative to one another corresponds to a closed position of the contacts (4, 5) in a normal operation of the unit, and that, upon the occurrence of a fault of magnetic origin, the displacement of the mobile core (29) leads to the disengagement of the two attachment elements (33, 34) relative to one another, this disengagement allowing the return lever (27) to return into a position of blocking of the handle (6) in the abovementioned intermediate position, characterized in that the abovementioned return lever (27) comprises a so-called third end part (27c) that can cooperate with an indicator (39) so as to signal the presence or not of a fault of magnetic origin, and in that this indicator (39) comprises a reset means (39e) that can be operated by a user so as to return the return lever (27) into a position of attachment with the so-called second lever (28), after the blocking of the handle in an intermediate position, and do so in order to release the handle (6) and allow its displacement to the open position to continue.
  2. Signalling device according to Claim 1, characterized in that this indicator (39) is mounted to rotate relative to the housing (1) of the unit, said indicator cooperating with the abovementioned so-called third end part (27c) of the return lever (27) and comprising a surface (39f) that is visible to a user through an aperture (7) of the housing (1) of the device, this visible surface (39f) comprising a means for indicating the presence or absence of a fault of magnetic origin depending on the rotational position of this indicator (39).
  3. Signalling device according to Claim 2, characterized in that this indicator (39) comprises at least one coloured surface portion on its visible face (39f), the appearance of this colour through the aperture (7) of the housing (1) indicating the occurrence of a fault of magnetic origin.
  4. Signalling device according to any one of Claims 1 to 3, characterized in that this third end part (27c) comprises a rod (37) comprising an axis (37a), this axis being able to cooperate with a groove (39a) provided in the abovementioned indicator (39), so that the rotational driving of the return lever (27) in one direction results in a rotation of the indicator (39) in an opposite direction.
  5. Signalling device according to any one of Claims 2 to 4, characterized in that this reset means comprises a finger-forming element (39e) protruding on the above-mentioned surface (39f) of the indicator (39).
  6. Electrical protection unit comprising a signalling device according to any one of Claims 1 to 5.
  7. Electrical protection unit according to Claim 6, characterized in that it also comprises a so-called second signalling means T, that can signal the tripped state of the unit regardless of the type of fault, the activation of the two signalling means S, T signalling a fault of magnetic type, the activation of just one signalling means signalling an overload fault.
  8. Electrical protection unit according to Claim 6 or 7, characterized in that it is a circuit breaker.
EP17160475.4A 2016-05-23 2017-03-13 Mechanism for signalling an electrical fault in an electric protection device, and electric protection device including such a mechanism Active EP3249673B1 (en)

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FR3023969B1 (en) * 2014-07-17 2017-12-22 Schneider Electric Ind Sas DEVICE FOR SIGNALING AN ELECTRICAL FAULT IN AN ELECTRICAL PROTECTION APPARATUS, AND APPARATUS COMPRISING SUCH A DEVICE

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* Cited by examiner, † Cited by third party
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CN107452525B (en) 2020-09-11
EP3249673A1 (en) 2017-11-29
FR3051593A1 (en) 2017-11-24
ES2823284T3 (en) 2021-05-06
CN107452525A (en) 2017-12-08
FR3051593B1 (en) 2019-10-04

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