EP2733719B1 - Auxiliary tripping device for tripping a circuit breaker - Google Patents

Auxiliary tripping device for tripping a circuit breaker Download PDF

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Publication number
EP2733719B1
EP2733719B1 EP13354038.5A EP13354038A EP2733719B1 EP 2733719 B1 EP2733719 B1 EP 2733719B1 EP 13354038 A EP13354038 A EP 13354038A EP 2733719 B1 EP2733719 B1 EP 2733719B1
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EP
European Patent Office
Prior art keywords
latch
blade
auxiliary
circuit breaker
branch
Prior art date
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Active
Application number
EP13354038.5A
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German (de)
French (fr)
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EP2733719A1 (en
Inventor
Mickael Bertrand
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP2733719A1 publication Critical patent/EP2733719A1/en
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    • 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
    • H01H71/24—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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0228—Mounting or assembling the different parts of the circuit breaker having provisions for interchangeable or replaceable parts
    • 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
    • H01H2083/205—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 having shunt or UVR tripping device with integrated mechanical energy accumulator
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures
    • 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
    • H01H83/12—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by voltage falling below a predetermined value, e.g. for no-volt protection

Definitions

  • the invention relates to an auxiliary trigger for being associated with a circuit breaker so as to trigger this circuit breaker, which can be a molded case circuit breaker, for example.
  • a circuit breaker generally includes a circuit breaker control mechanism and a trip bar movable between a latching position and a detent position.
  • the circuit breaker also comprises at least one main trigger, which is able to actuate the trip bar out of its snap position.
  • the circuit breaker control mechanism When the trip bar is in the latching position, the circuit breaker control mechanism is held in a passive state where it is inoperative on the tripped or undocked state of the circuit breaker. If it detects an abnormal electrical condition such as a persistent overcurrent or a short circuit, the main trigger operates the trip bar to the breakout position. The displacement of the trip bar to its disengaged position causes a break in the attachment of the circuit breaker control mechanism which is then released, which leads to a tripping of the circuit breaker, that is to say to its opening.
  • the main release can be supplemented by an auxiliary release which, like this main release, is able to cause a break in the snap of the circuit breaker control mechanism.
  • This auxiliary trigger can thus cause an opening of the circuit breaker independently of the position of the main release.
  • Such auxiliary trigger can be electrically controlled, which can be used in particular to allow remote control of the circuit breaker.
  • auxiliary trigger of a first type which continuously detects the presence or absence of a voltage and which is intended to cause a tripping of the circuit breaker if this voltage disappears or falls below a predetermined threshold.
  • auxiliary trip unit MN triggered by lack of voltage or "auxiliary trip unit MN with no voltage”.
  • auxiliary trigger of a second type which is intended to cause tripping of the circuit breaker if an electric current greater than a predetermined level circulates inside this auxiliary trip unit.
  • Such an auxiliary trigger of the second type is commonly referred to as a "current release trigger MX" or "MX current release”.
  • an energy storage mechanism comprises a pivoting latch designed to retain a pallet in a neutral position, against an elastic return tending to tilt the pallet in a movement causing a trigger circuit breaker.
  • the mechanical strength of the unlocking catch must not be too far from a target value. Indeed, if this behavior is too low, there is a risk of accidental stall leading to inadvertent tripping of the circuit breaker. On the other hand, a too high hold of the unlocking hooking makes the risk of a resistance of the hooking to a stall control, and therefore the risk of a non-trigger in the presence of a command order on the contrary. a tripping of this circuit breaker.
  • the holding of the latching unlocking in the auxiliary triggers described in the document US5,512,720 supra is a function of the balance between two elastic reminders. One of these reminders is exerted on the pallet and tends to tilt this pallet in a tripping movement of the circuit breaker. The other reminder involved in the aforementioned balance is exerted on the lock. It is the fact of a spring provided to return the lock to its locking position during a reset of the auxiliary trigger. Copies This is complicated to manufacture and there are significant variations in properties between such copies.
  • the object of the invention is to facilitate the production management of an auxiliary trigger for tripping a circuit breaker.
  • the lock is configured to be able to receive, from the drive part, a thrust acting in the direction of resetting the lock to its locking position.
  • the figure 1 represents an auxiliary trigger 1 according to the invention, and a polyphase circuit breaker D able to be equipped.
  • the auxiliary trigger 1 is a modular optional equipment which circuit breaker D may or may not be provided.
  • circuit breaker D is more precisely a molded case circuit breaker, still referred to by the acronym DBM (molded case circuit breaker). It may however be otherwise without departing from the scope of the invention.
  • DBM molded case circuit breaker
  • the auxiliary trip unit 1 is shown outside the casing of the circuit breaker D.
  • the arrow F schematizes its implementation in a complementary mounting and coupling housing L, the circuit breaker D comprises to receive this auxiliary trigger 1 operably.
  • the auxiliary trigger 1 is shown alone at the figure 2 . It is more specifically a voltmetric trigger, which comprises a casing 2 of assembly and support fixedly or movably of most other components of the auxiliary trigger 1. Some of these other elements form a mechanism for accumulation of energy, including a drive part 3 associated with a pallet 4 pivotally mounted relative to the housing 2 by means of two opposite bearings 5.
  • the energy storage mechanism also comprises one or more elastic actuating members 6, whose function is to actuate the pallet 4 to an active position and thus cause a tripping of the circuit breaker D.
  • these elastic actuating members 6 are two in number and consist of two traction springs connected in parallel so as to act together in the same direction.
  • the auxiliary trip unit 1 comprises an electromechanical actuating device, which includes an electric coil 7.
  • the auxiliary trip unit 1 also comprises a terminal block 8 supporting two electrical terminals 9 for electrical connection of the coil 7 to unrepresented transmission wires of a online order.
  • the auxiliary trigger 1 is more precisely an auxiliary trigger MN to trigger by lack of voltage.
  • the coil 7 is housed in a support sleeve 11.
  • An axial passage 12 extends longitudinally through the sleeve 11, inside which a fixed core 13 is mounted, as well as a slider comprising a movable core 14 and a pusher 16 fixed rigidly to one another by screwing. This slide is guided to slide in a sliding direction Z-Z '.
  • a compression spring 17 is mounted inside the sheath 11, and is compressed between a shoulder in the fixed core 13 and an end face of the movable core 14. It tends to move the movable core 14 away from the fixed core 13 according to the sliding direction Z-Z '. In other words, the spring 17 forms an elastic return member of the movable core 14 away from the fixed core 13.
  • One end of the pusher 16 protrudes from the movable core 14 so as to form an axially projecting actuating finger. Opposite this actuating finger, a portion of the pusher 16 also protrudes from the movable core 14.
  • the fixed core 13 is traversed by an axial hole through which this portion passes, on which the spring 17 is threaded while being surrounded by the fixed core 13.
  • the axial passage 12 comprises three sections 23, 25 and 26 which succeed each other axially.
  • the section 26 is a median section of smaller diameter interconnecting the sections 23 and 25, which open in two axially opposite directions and which advantageously have the same diameter.
  • the pallet 4 is provided to drive the trigger member 3 for cooperating with a trigger bar to a recess position.
  • a recess of a circuit-breaker control mechanism present in the circuit-breaker D occurs. In a manner known per se, this recess leads to a tripping, and to the opening of the contacts of the circuit breaker. circuit breaker D.
  • the pallet 4 is mounted to tilt around an axis referenced X 1 -X ' 1 .
  • the two traction springs 6 serve to accumulate energy in order to actuate the pallet 4 from its position of the figures 3 and 4 , where the auxiliary trigger 1 is in a neutral armed state.
  • Each spring 6 has two opposite ends, which are bent each to form a hook and which are a fixed anchoring end hooked to a fixed retaining bar 28 and a movable actuating end hooked to a coupling portion 29 from room 4.
  • the pallet 4 comprises a hooking end 30 which is remote from the tilting axis X 1 -X ' 1 , so as to be able to turn about this axis when the pallet 4 is actuated.
  • the energy storage mechanism further comprises a pivoting latch 31, which is carried by a shaft 32 so as to be pivotable about a pivot axis X 2 -X ' 2 substantially parallel to the tilting axis X 1 -X ' 1 .
  • a spring 33 constantly recalls the latch 31 around the pivot axis X 2 -X ' 2 (clockwise on the figures 3 and 4 ).
  • the spring 33 is wound around a bar 34, each end of which is part of one of the bearings 5.
  • Two branches of the spring 33 are permanently resting against the fixed retaining bar 28 which prevents them from tilting around the bar 34 , clockwise to the figure 3 .
  • the latch 31 comprises two branches 40 and 41 angularly offset from one another about the pivot axis X 2 -X ' 2 .
  • the branch 40 is in the path of the pusher 16, which can thus exert on it an actuating thrust of the latch 31 from a locking position to a release position.
  • the branch 40 ends with a pusher 42, which is generally directed towards the part 4 so as to be able to receive an actuating thrust, from this part 4.
  • the latch 31 has a bend 43 whose concavity is turned towards the part 4. Opposite this piece 4, the bend has a protruding back, which defines a receiving zone of a thrust exerted by the pusher 16 at each trigger.
  • the spring 33 comprises an actuating arm 44, through which it acts on the latch 31 by pushing on the branch 40 thereof.
  • the pusher 42 and the elbow 43 together form a hook to which the actuating arm 44 is securely hooked.
  • the branch 41 of the latch 31 forms a gripping finger ending in a gripping head 45 designed to snap the pallet 4 into a neutral position, that is to say in the position of the figure 3 to 5 where the energy storage mechanism is armed.
  • the attachment head 45 has a spout 46 which is the hooking of the piece 4.
  • the spout 46 is generally projecting in a direction A passing through the pivot axis X 2 -X ' 2 . In this way, it has a protruding end 47 where the support of the part 4 is carried out when this part 4 is hooked on the latch 31 in its locking position.
  • the latch 31 has the spout 46
  • the spout 46 is carried by the part 4, in which case it is generally directed in the opposite direction to the pivot axis X 2 -X ' 2 .
  • an electric excitation current constantly travels the coil 7 so that the electromagnetic force generated keeps the movable core 14 against the fixed core 13.
  • the actuating finger formed by an end of the pusher 16 is then at a short distance , called "guard", of the branch 40 of the lock 31.
  • the energy storage mechanism of the auxiliary trigger 1 is armed, insofar as the pallet 4 is hooked to the latch 31 being in its locking position.
  • the latch 31 thus retains the pallet 4 in a neutral position, against a bias exerted by the two springs 6 together.
  • These two springs 6 and store energy able to operate the pallet 4 to an active position.
  • the support of the pallet 4 on the latch 31 is located at the projecting end 47 when the latch 31 performs a locking of the energy storage mechanism in an armed state, as is the case with Figures 3 to 5 . It follows that this lock is stable, unlike a lock resulting from an unlocking hook. A stable snap producing a stable lock is still called a lock. This is a positive snap that is insensitive to variations that may affect different parameters of construction. In other words, a locking latch is safe, without the risk of accidental stall, even in the presence of such variations that may concern the dimensions of the parts and / or position settings and / or the stiffness of the springs.
  • the latch 31 When in its locking position, the latch 31 is subjected to two opposite pairs with respect to the pivot axis X 2 -X ' 2 . Undergoing the pulls of the two springs 6, the pallet 4 exerts a first of these two pairs, at the attachment head 45.
  • the actuating arm 44 exerts the second torque on the latch 31.
  • the force exerted by this actuating arm 44 may be chosen so as to be weak. This force may not intervene in the locking made by the latch 31 because this lock is a result of a stable locking or locking.
  • the compression force of the coil first spring 17 becomes greater than the force of attraction of the movable core 14 towards the fixed core 13.
  • the pusher 16 is then driven towards the branch 40 of the latch 31, until pushing this branch 40 at the back of the elbow 43 and thus bring the latch 31 to pivot to its release position.
  • the figure 7 illustrates the resetting of the energy storage mechanism of the auxiliary trip unit 1, after a trip that has led to the state of the figure 6 .
  • This resetting can be done successfully after the coil 7 has been turned back on.
  • the coil 7 produces an electromagnetic force acting on the movable core 14, in the direction of a return of this movable core to the fixed core 13.
  • This electromagnetic force is lower than that exerted by the spring 17 as long as the movable core 14 is too far away from the fixed core 13.
  • the correct re-energization of the coil 7 is insufficient on its own to effectively return the movable core 14 to the fixed core 13.
  • the resetting of the energy storage mechanism of the auxiliary trip unit MN results from a reset of the circuit breaker D.
  • Such a resetting of the circuit breaker D is the result of a manual actuation of the joystick generating a movement, which is transmitted to the pallet 4 so that it tilts to its neutral position. This happens at the figure 7 , where the tilting of the pallet 4 towards its neutral position is symbolized by the arrow B.
  • the pallet 4 exerts a thrust P towards the fixed core 13, on the pusher 42 of the branch 40, which transmits this push P to the pusher 16 of the slider. Transmitted by the branch 40, the thrust P pushes this slider towards the fixed core 13.
  • the coil 7 consumes a low electrical power to create the force just sufficient to maintain the compressed spring 17, the latter may indeed have a very low stiffness and, despite this, be able to actuate the latch 31, possibly through the guard between the pusher 16 and the latch 31.
  • FIG. figure 2 of the document US5,512,720 An auxiliary trigger of the prior art is shown in FIG. figure 2 of the document US5,512,720 , where a reference 40 designates a support and adjustment piece. A compression spring similar to the spring 17 is compressed between this support and adjustment piece and a movable core similar to the movable core 14.
  • the support piece and adjustment provided in the document US5,512,720 is mounted by screwing inside a fixed core similar to the fixed core 13. With this, one can adjust its axial position relative to the fixed core and thus adjust the restoring force exerted by the compression spring.
  • the fixed core 13 of the auxiliary release 1 may be devoid of a support piece and adjustment to adjust the compression ratio of the spring reminding the movable core 14 away from the fixed core 13. This is the case in the example shown and results in an advantage especially in terms of simplification and cost of production. Another choice consisting in allowing an adjustment of the elastic return of the mobile core 14 can also be done without departing from the scope of the invention.
  • auxiliary trigger according to the invention is designated by the reference 101. It is more specifically an auxiliary trigger MX current triggering.
  • auxiliary trigger MX current triggering In what follows, only what is distinguished from the auxiliary trigger 1 is described.
  • a reference used hereinafter to designate a part of the auxiliary trigger 101 analogous or equivalent to a referenced part of the auxiliary trigger 1 is constructed. by increasing by one hundred (100) the reference identifying this part on the auxiliary trigger 1.
  • auxiliary trigger 101 most of the parts of the auxiliary trigger 101 are identical to the parts of the auxiliary trigger 1. This is the case, for example, fixed cores 13 and 113, as well as moving cores 14 and 114.
  • auxiliary trip units 1 and 101 can also be mounted in the same way in the two auxiliary triggers 1 and 101. This is the case, for example, of housings 2 and 102, pallets 4 and 104, springs 6 and 106, sleeves 11 and 111, pushers 16 and 116, latches 31 and 131, bars 34 and 134, and springs 33 and 133.
  • any of the auxiliary trigger 1 to tripping due to lack of voltage MN and the auxiliary trigger 101 to trigger current emission MX can be indifferently mounted operationally in the additional housing mounting and coupling L of the circuit breaker D, which is still advantageous.
  • the circuit breaker D is able to receive indifferently either the auxiliary trigger 1 triggered by lack of voltage MN, or the auxiliary trigger 101 triggered by current emission MX.
  • a difference between the auxiliary triggers 1 and 101 is that the fixed core 13 is fixedly mounted in the section 23, while the fixed core 113 is fixedly mounted in the section 125.
  • auxiliary releases 1 and 101 Another difference between the auxiliary releases 1 and 101 is that the movable core 14 is axially slidably mounted in the section 25, while the movable core 114 is axially slidably mounted in the section 123.
  • the auxiliary trigger 101 is in a neutral armed state, that is to say in the state where the trigger 1 is at the figure 3 .
  • the auxiliary trigger 101 is in a triggered state, that is to say in the state where the trigger 1 is at the figure 6 .
  • the auxiliary trigger 101 to trigger by current emission MX operates in contrast to the auxiliary trigger 1 in that this auxiliary trigger 101 causes a tripping of the circuit breaker D, when a control electric current greater than a predetermined threshold begins to run the coil 107.

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention concerne un déclencheur auxiliaire pour être associé à un disjoncteur de manière à pouvoir déclencher ce disjoncteur, qui peut être un disjoncteur à boîtier moulé, par exemple.The invention relates to an auxiliary trigger for being associated with a circuit breaker so as to trigger this circuit breaker, which can be a molded case circuit breaker, for example.

État de la techniqueState of the art

Un disjoncteur comporte généralement un mécanisme de commande de disjoncteur et une barre de déclenchement déplaçable entre une position d'accrochage et une position de décrochement. Le disjoncteur comporte également au moins un déclencheur principal, qui est apte à actionner la barre de déclenchement hors de sa position d'accrochage.A circuit breaker generally includes a circuit breaker control mechanism and a trip bar movable between a latching position and a detent position. The circuit breaker also comprises at least one main trigger, which is able to actuate the trip bar out of its snap position.

Lorsque la barre de déclenchement est dans la position d'accrochage, le mécanisme de commande de disjoncteur est retenu dans un état passif où il est inopérant sur l'état déclenché ou non du disjoncteur. S'il détecte une condition électrique anormale comme une surintensité persistante ou un court-circuit, le déclencheur principal actionne la barre de déclenchement vers la position de décrochement. Le déplacement de la barre de déclenchement jusqu'à sa position de décrochement provoque une rupture de l'accrochage du mécanisme de commande de disjoncteur qui est alors libéré, ce qui conduit à un déclenchement du disjoncteur, c'est-à-dire à son ouverture.When the trip bar is in the latching position, the circuit breaker control mechanism is held in a passive state where it is inoperative on the tripped or undocked state of the circuit breaker. If it detects an abnormal electrical condition such as a persistent overcurrent or a short circuit, the main trigger operates the trip bar to the breakout position. The displacement of the trip bar to its disengaged position causes a break in the attachment of the circuit breaker control mechanism which is then released, which leads to a tripping of the circuit breaker, that is to say to its opening.

Dans certains disjoncteurs monophasé ou polyphasé, le déclencheur principal peut être complété par un déclencheur auxiliaire qui, comme ce déclencheur principal, est à même de provoquer la rupture de l'accrochage du mécanisme de commande de disjoncteur. Ce déclencheur auxiliaire peut ainsi provoquer une ouverture du disjoncteur indépendamment de la position du déclencheur principal. Un tel déclencheur auxiliaire peut être commandé électriquement, ce qui peut notamment être utilisé pour permettre une commande à distance du disjoncteur.In some single phase or multiphase circuit breakers, the main release can be supplemented by an auxiliary release which, like this main release, is able to cause a break in the snap of the circuit breaker control mechanism. This auxiliary trigger can thus cause an opening of the circuit breaker independently of the position of the main release. Such auxiliary trigger can be electrically controlled, which can be used in particular to allow remote control of the circuit breaker.

Par exemple, il peut être souhaitable d'associer et/ou de combiner au disjoncteur un déclencheur auxiliaire d'un premier type, qui détecte en permanence la présence ou l'absence d'une tension et qui est destiné à provoquer un déclenchement du disjoncteur si cette tension disparaît ou devient inférieure à un seuil prédéterminé. Un tel déclencheur auxiliaire du premier type est communément appelé "déclencheur auxiliaire MN à déclenchement par manque de tension" ou "déclencheur auxiliaire MN à manque de tension".For example, it may be desirable to associate and / or combine with the circuit breaker an auxiliary trigger of a first type, which continuously detects the presence or absence of a voltage and which is intended to cause a tripping of the circuit breaker if this voltage disappears or falls below a predetermined threshold. Such an auxiliary trigger of the first type is commonly referred to as an "auxiliary trip unit MN triggered by lack of voltage" or "auxiliary trip unit MN with no voltage".

En combinaison avec un disjoncteur, on peut également utiliser un déclencheur auxiliaire d'un second type, qui est destiné à provoquer un déclenchement du disjoncteur si un courant électrique supérieur à un niveau prédéterminé circule à l'intérieur de ce déclencheur auxiliaire. Un tel déclencheur auxiliaire du second type est communément appelé "déclencheur auxiliaire MX à déclenchement par émission de courant" ou "déclencheur auxiliaire MX à émission de courant".In combination with a circuit breaker, it is also possible to use an auxiliary trigger of a second type, which is intended to cause tripping of the circuit breaker if an electric current greater than a predetermined level circulates inside this auxiliary trip unit. Such an auxiliary trigger of the second type is commonly referred to as a "current release trigger MX" or "MX current release".

Le document US 5,512,720 propose deux déclencheurs auxiliaires pour disjoncteur à boîtier moulé, à savoir un déclencheur auxiliaire du premier type, à déclenchement par manque de tension, et un déclencheur auxiliaire du deuxième type, à déclenchement par émission de courant. Dans ces déclencheurs auxiliaires MN et MX, un mécanisme à accumulation d'énergie comporte un verrou pivotant prévu pour retenir une palette dans une position neutre, à l'encontre d'un rappel élastique tendant à faire basculer cette palette selon un mouvement provoquant un déclenchement du disjoncteur.The document US5,512,720 proposes two auxiliary trip units for a molded case circuit breaker, namely an auxiliary trigger of the first type, triggered by a lack of voltage, and an auxiliary trigger of the second type, triggered by current emission. In these auxiliary releases MN and MX, an energy storage mechanism comprises a pivoting latch designed to retain a pallet in a neutral position, against an elastic return tending to tilt the pallet in a movement causing a trigger circuit breaker.

Lorsque le mécanisme à accumulation d'énergie est armé, la palette est retenue dans sa position neutre du fait de son accrochage au verrou. Cet accrochage est déverrouillant c'est-à-dire aisé à défaire lors d'un déclenchement.When the energy storage mechanism is armed, the pallet is held in its neutral position because of its latching latch. This attachment is unlocking that is to say, easy to undo during a trigger.

La tenue mécanique de l'accrochage déverrouillant ne doit pas s'éloigner trop d'une valeur cible. En effet, si cette tenue est trop faible, il existe un risque de décrochage accidentel conduisant à un déclenchement intempestif du disjoncteur. A l'inverse, une tenue trop élevée de l'accrochage déverrouillant fait encourir le risque d'une résistance de l'accrochage à une commande de décrochage, et donc le risque d'un non déclenchement en présence d'un ordre commandant au contraire un déclenchement de ce disjoncteur.The mechanical strength of the unlocking catch must not be too far from a target value. Indeed, if this behavior is too low, there is a risk of accidental stall leading to inadvertent tripping of the circuit breaker. On the other hand, a too high hold of the unlocking hooking makes the risk of a resistance of the hooking to a stall control, and therefore the risk of a non-trigger in the presence of a command order on the contrary. a tripping of this circuit breaker.

Or, plusieurs paramètres interviennent dans la tenue de l'accrochage déverrouillant dans les déclencheurs auxiliaires que décrit le document US 5,512,720 précité. L'un de ces paramètres concerne la précision avec laquelle peut être conformé le verrou au niveau de sa zone d'accrochage à la palette, d'autant que cette zone possède de faibles dimensions. De manière semblable, un autre paramètre intervenant dans la tenue de l'accrochage déverrouillant concerne la précision avec laquelle peut être conformée la palette au niveau de sa zone d'accrochage au verrou, d'autant que cette zone se trouve au niveau d'un bord ménagé par cisaillement. En outre, la tenue de l'accrochage déverrouillant dans les déclencheurs auxiliaires que décrit le brevet US 5,512,720 précité est fonction de l'équilibre entre deux rappels élastiques. L'un de ces rappels s'exerce sur la palette et tend à faire basculer cette palette dans un mouvement de déclenchement du disjoncteur. L'autre rappel intervenant dans l'équilibre précité s'exerce sur le verrou. Il est le fait d'un ressort prévu pour faire retourner le verrou vers sa position de verrouillage lors d'un réarmement du déclencheur auxiliaire. Des exemplaires de ce ressort sont compliqués à fabriquer et on constate des variations significatives de propriétés entre de tels exemplaires.However, several parameters intervene in the holding of the latching unlocking in the auxiliary triggers described in the document US5,512,720 supra. One of these parameters relates to the accuracy with which the lock can be shaped at its attachment zone to the pallet, especially since this area has small dimensions. Similarly, another parameter involved in the holding of the unlocking lock relates to the accuracy with which the pallet can be shaped at its latching zone, especially since this zone is at a level of edge formed by shearing. In addition, the holding of the latching unlocking in the auxiliary triggers described in the patent US5,512,720 mentioned above is a function of the balance between two elastic reminders. One of these reminders is exerted on the pallet and tends to tilt this pallet in a tripping movement of the circuit breaker. The other reminder involved in the aforementioned balance is exerted on the lock. It is the fact of a spring provided to return the lock to its locking position during a reset of the auxiliary trigger. Copies This is complicated to manufacture and there are significant variations in properties between such copies.

De ce qui précède, il ressort que, déjà individuellement, chacun des paramètres intervenant dans la tenue mécanique des accrochages déverrouillants prévus dans le brevet US 5,512,720 précité peut être difficile à maîtriser. La combinaison de l'ensemble de ces paramètres est encore plus difficile à maîtriser. Il s'ensuit que, lors de leur fabrication, des déclencheurs auxiliaires identiques ou semblables à ceux décrits dans le brevet US 5,512,720 précité posent d'importants problèmes de réglage portant sur la tenue de l'accrochage déverrouillant.From the foregoing, it appears that, already individually, each of the parameters involved in the mechanical strength of the unlocking snaps provided in the patent US5,512,720 mentioned above can be difficult to master. The combination of all these parameters is even more difficult to master. It follows that, during their manufacture, auxiliary triggers identical or similar to those described in the patent US5,512,720 mentioned above pose significant adjustment problems relating to the holding of the unlocking hook.

Objet de l'inventionObject of the invention

L'invention a pour but de faciliter la gestion de production d'un déclencheur auxiliaire de déclenchement d'un disjoncteur.The object of the invention is to facilitate the production management of an auxiliary trigger for tripping a circuit breaker.

Selon l'invention, le déclencheur auxiliaire comporte :

  • une pièce d'entraînement à palette mobile entre une position neutre et une position active,
  • au moins un organe élastique d'actionnement prévu pour stocker une énergie mécanique lorsque la pièce d'entraînement est dans sa position neutre, et pour actionner la pièce d'entraînement de sa position neutre à sa position active, à l'aide de ladite énergie, selon un mouvement produisant une manoeuvre de déclenchement du disjoncteur, suite à un déverrouillage de la pièce d'entraînement,
  • un verrou monté pivotant autour d'un axe de pivotement et prévu pour retenir la pièce d'entraînement dans sa position neutre, à l'encontre d'une libération de ladite énergie, jusqu'à un déplacement du verrou vers une position de libération dans laquelle se produit ledit déverrouillage,
  • un premier ressort de rappel monté pour rappeler le verrou vers une position de verrouillage dans laquelle le verrou retient la pièce d'entraînement dans sa position neutre,
  • un coulisseau de poussée du verrou hors de sa position de verrouillage, vers sa position de libération,
  • un deuxième ressort de rappel monté pour rappeler le coulisseau dans un premier sens,
  • une bobine électrique de génération d'une force électromagnétique d'entraînement du coulisseau à l'encontre du deuxième ressort de rappel, dans un deuxième sens contraire au premier sens, lorsque cette bobine est alimentée par ladite commande électrique,
  • un bec du verrou étant en saillie selon une direction passant par l'axe de pivotement de manière à comporter une extrémité saillante où s'effectue un accrochage localisé de la palette au verrou lorsque ce verrou dans sa position de verrouillage retient la palette dans sa position neutre.
According to the invention, the auxiliary trigger comprises:
  • a movable pallet driving part between a neutral position and an active position,
  • at least one elastic actuating member provided for storing mechanical energy when the driving part is in its neutral position, and for actuating the driving part from its neutral position to its active position, with the aid of said energy according to a movement producing a tripping operation of the circuit-breaker, following an unlocking of the driving part,
  • a latch pivoted about a pivot axis and provided to retain the drive member in its neutral position, against release of said energy, to a displacement of the latch towards a release position in which said unlocking occurs,
  • a first return spring mounted to bias the latch to a lock position in which the latch holds the drive member in its neutral position;
  • a slide for pushing the lock out of its locking position, towards its release position,
  • a second return spring mounted to recall the slide in a first direction,
  • an electric coil for generating an electromagnetic force for driving the slide against the second return spring, in a second direction opposite to the first direction, when this coil is powered by said electric drive,
  • a spout of the latch projecting in a direction passing through the axis of pivoting so as to comprise a protruding end where a localized fastening of the pallet to the latch occurs when the latch in its locking position holds the pallet in its position neutral.

Le verrou est configuré de manière à pouvoir recevoir, de la part de la pièce d'entraînement, une poussée agissant dans le sens d'un réarmement du verrou vers sa position de verrouillage.The lock is configured to be able to receive, from the drive part, a thrust acting in the direction of resetting the lock to its locking position.

Le déclencheur auxiliaire défini ci-dessus peut incorporer une ou plusieurs autres caractéristiques avantageuses, isolément ou en combinaison, en particulier parmi celles définies ci-après.

  • le verrou comporte de plus un poussoir apte à recevoir ladite poussée de la pièce d'entraînement et de la palette ;
  • le verrou comporte une première branche formant un doigt pourvu dudit bec ;
  • le verrou comporte une deuxième branche angulairement décalée de la première branche autour dudit axe de pivotement et placée sur la trajectoire du coulisseau de manière à pouvoir recevoir une poussée d'actionnement vers la position de libération, de la part du coulisseau, ladite deuxième branche comportant ledit poussoir ;
  • le premier ressort de rappel comporte un bras d'actionnement au moyen duquel le premier ressort de rappel agit directement sur la deuxième branche du verrou, le poussoir formant au moins une portion terminale d'un crochet auquel est accroché le bras d'actionnement constitutif du premier ressort de rappel ;
  • le deuxième ressort de rappel exerce un rappel du coulisseau pour actionner le verrou de sa position de verrouillage à sa position de libération.
The auxiliary trigger defined above may incorporate one or more other advantageous features, alone or in combination, in particular from those defined below.
  • the lock further comprises a pusher adapted to receive said thrust of the drive part and the pallet;
  • the lock comprises a first branch forming a finger provided with said spout;
  • the lock comprises a second branch angularly offset from the first branch about said pivot axis and placed on the trajectory of the slider so as to be able to receive an actuating thrust towards the release position, on the part of the slider, said second branch comprising said pusher;
  • the first return spring comprises an actuating arm by means of which the first return spring acts directly on the second leg of the lock, the pusher forming at least one end portion of a hook to which is attached the actuating arm constituting the first return spring;
  • the second return spring exerts a return of the slide to actuate the lock from its locking position to its release position.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre de modes particuliers de réalisation de l'invention donnés à titre d'exemples non limitatifs et représentés aux dessins annexés, parmi lesquels :

  • la figure 1 est une vue éclatée, en perspective, d'un déclencheur auxiliaire voltmétrique conforme à l'invention et d'un disjoncteur destiné à recevoir ce déclencheur ;
  • la figure 2 est une vue en perspective du déclencheur auxiliaire représenté hors du disjoncteur à la figure 1 ;
  • la figure 3 est une vue en coupe longitudinale selon le plan III de la figure 2 et, comme cette figure 2, représente seulement le déclencheur auxiliaire, qui est plus précisément un déclencheur du premier type, c'est-à-dire un déclencheur à déclenchement par manque de tension;
  • la figure 4 est un agrandissement d'une portion de la figure 3, où le déclencheur auxiliaire de la figure 2 est dans un premier état, à savoir un état armé neutre ;
  • la figure 5 est un agrandissement d'une fenêtre qui est une sélection d'une portion de la figure 4 ;
  • la figure 6 est une vue en coupe longitudinale qui est analogue à la figure 3 et où le déclencheur auxiliaire des figures 2 et 3 est dans un deuxième état, à savoir un état déclenché, après avoir provoqué un déclenchement du disjoncteur de la figure 1 ;
  • la figure 7 est une vue en coupe longitudinale qui est analogue à la figure 3 comme à la figure 6, et où le déclencheur auxiliaire des figures 2 et 3 est en train d'être réarmé, c'est-à-dire actionné de son état déclenché jusque dans son état armé neutre ;
  • la figure 8 est une vue en coupe longitudinale analogue à la figure 3 et représente un déclencheur auxiliaire qui est conforme à l'invention et qui est du deuxième type, c'est-à-dire à déclenchement par émission de courant ; et
  • la figure 9 est également une vue en coupe longitudinale analogue à la figure 3 et représente le déclencheur auxiliaire de la figure 8 dans l'état déclenché, alors que ce déclencheur auxiliaire est dans un état armé neutre sur cette figure 8.
Other advantages and features will emerge more clearly from the following description of particular embodiments of the invention given as non-restrictive examples and represented in the accompanying drawings, among which:
  • the figure 1 is an exploded view, in perspective, of a voltmetric auxiliary release according to the invention and a circuit breaker for receiving this trigger;
  • the figure 2 is a perspective view of the auxiliary trigger shown out of the circuit breaker at the figure 1 ;
  • the figure 3 is a longitudinal sectional view along plane III of the figure 2 and, like this figure 2 , represents only the auxiliary trigger, which is more precisely a trigger of the first type, that is to say a trip triggering by lack of voltage;
  • the figure 4 is an enlargement of a portion of the figure 3 , where the auxiliary trigger of the figure 2 is in a first state, namely a neutral armed state;
  • the figure 5 is an enlargement of a window that is a selection of a portion of the figure 4 ;
  • the figure 6 is a longitudinal sectional view that is analogous to the figure 3 and where the auxiliary trigger of the Figures 2 and 3 is in a second state, namely a triggered state, after causing a tripping of the circuit breaker of the figure 1 ;
  • the figure 7 is a longitudinal sectional view that is analogous to the figure 3 as at the figure 6 , and where the auxiliary trigger of the Figures 2 and 3 is being rearmed, that is, actuated from its triggered state to its neutral armed state;
  • the figure 8 is a longitudinal sectional view similar to the figure 3 and represents an auxiliary trigger which is in accordance with the invention and which is of the second type, that is to say triggering by current emission; and
  • the figure 9 is also a longitudinal sectional view similar to the figure 3 and represents the auxiliary trigger of the figure 8 in the triggered state, while this auxiliary trigger is in a neutral armed state on this figure 8 .

Description de modes de réalisation préférentiels de l'inventionDESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION

La figure 1 représente un déclencheur auxiliaire 1 conforme à l'invention, ainsi qu'un disjoncteur polyphasé D à même d'en être équipé. Dans l'exemple représenté, le déclencheur auxiliaire 1 est un équipement optionnel modulaire dont le disjoncteur D peut être ou non pourvu.The figure 1 represents an auxiliary trigger 1 according to the invention, and a polyphase circuit breaker D able to be equipped. In the example shown, the auxiliary trigger 1 is a modular optional equipment which circuit breaker D may or may not be provided.

Toujours dans l'exemple représenté, le disjoncteur D est plus précisément un disjoncteur à boîtier moulé, encore désigné par l'acronyme DBM (Disjoncteur Boîtier Moulé). Il peut toutefois en être autrement sans sortir du cadre de l'invention.Still in the example shown, the circuit breaker D is more precisely a molded case circuit breaker, still referred to by the acronym DBM (molded case circuit breaker). It may however be otherwise without departing from the scope of the invention.

Sur la figure 1, le déclencheur auxiliaire 1 est représenté hors du boîtier du disjoncteur D. La flèche F schématise sa mise en place dans un logement complémentaire de montage et d'accouplement L, que le disjoncteur D comporte pour recevoir ce déclencheur auxiliaire 1 de manière opérationnelle.On the figure 1 , the auxiliary trip unit 1 is shown outside the casing of the circuit breaker D. The arrow F schematizes its implementation in a complementary mounting and coupling housing L, the circuit breaker D comprises to receive this auxiliary trigger 1 operably.

Le déclencheur auxiliaire 1 est représenté seul à la figure 2. Il s'agit plus précisément d'un déclencheur voltmétrique, qui comprend un boîtier 2 d'assemblage et de support de façon fixe ou mobile de la plupart des autres éléments constitutifs du déclencheur auxiliaire 1. Certains de ces autres éléments forment un mécanisme à accumulation d'énergie, dont une pièce d'entraînement 3 associée à une palette 4 montée basculante par rapport au boîtier 2 au moyen de deux paliers 5 opposés. Le mécanisme à accumulation d'énergie comporte également un ou plusieurs organes élastiques d'actionnement 6, qui ont pour fonction d'actionner la palette 4 jusque dans une position active et provoquer ainsi un déclenchement du disjoncteur D. Dans l'exemple représenté, ces organes élastiques d'actionnement 6 sont au nombre de deux et sont constitués par deux ressorts de traction montés en parallèle de manière à agir conjointement dans le même sens.The auxiliary trigger 1 is shown alone at the figure 2 . It is more specifically a voltmetric trigger, which comprises a casing 2 of assembly and support fixedly or movably of most other components of the auxiliary trigger 1. Some of these other elements form a mechanism for accumulation of energy, including a drive part 3 associated with a pallet 4 pivotally mounted relative to the housing 2 by means of two opposite bearings 5. The energy storage mechanism also comprises one or more elastic actuating members 6, whose function is to actuate the pallet 4 to an active position and thus cause a tripping of the circuit breaker D. In the example shown, these elastic actuating members 6 are two in number and consist of two traction springs connected in parallel so as to act together in the same direction.

Le déclencheur auxiliaire 1 comprend un dispositif d'actionnement électromécanique, qui inclut une bobine électrique 7. Le déclencheur auxiliaire 1 comprend aussi un bornier 8 supportant deux bornes électriques 9 de raccordement électrique de la bobine 7 à des fils non représentés de transmission d'une commande électrique.The auxiliary trip unit 1 comprises an electromechanical actuating device, which includes an electric coil 7. The auxiliary trip unit 1 also comprises a terminal block 8 supporting two electrical terminals 9 for electrical connection of the coil 7 to unrepresented transmission wires of a online order.

Le déclencheur auxiliaire 1 est plus précisément un déclencheur auxiliaire MN à déclenchement par manque de tension. Ainsi qu'on peut le voir à la figure 3, la bobine 7 est logée dans un fourreau 11 de support. Un passage axial 12 traverse longitudinalement le fourreau 11, à l'intérieur duquel sont montés un noyau fixe 13, ainsi qu'un coulisseau comprenant un noyau mobile 14 et un poussoir 16 fixés rigidement l'un à l'autre par vissage. Ce coulisseau est guidé pour coulisser selon une direction de coulissement Z-Z'.The auxiliary trigger 1 is more precisely an auxiliary trigger MN to trigger by lack of voltage. As can be seen at figure 3 , the coil 7 is housed in a support sleeve 11. An axial passage 12 extends longitudinally through the sleeve 11, inside which a fixed core 13 is mounted, as well as a slider comprising a movable core 14 and a pusher 16 fixed rigidly to one another by screwing. This slide is guided to slide in a sliding direction Z-Z '.

Un ressort de compression 17 est monté à l'intérieur du fourreau 11, et est comprimé entre un épaulement dans le noyau fixe 13 et une face d'extrémité du noyau mobile 14. Il tend à écarter le noyau mobile 14 du noyau fixe 13 selon la direction de coulissement Z-Z'. En d'autres termes, le ressort 17 forme un organe élastique de rappel du noyau mobile 14 à l'écart du noyau fixe 13.A compression spring 17 is mounted inside the sheath 11, and is compressed between a shoulder in the fixed core 13 and an end face of the movable core 14. It tends to move the movable core 14 away from the fixed core 13 according to the sliding direction Z-Z '. In other words, the spring 17 forms an elastic return member of the movable core 14 away from the fixed core 13.

Une extrémité du poussoir 16 dépasse du noyau mobile 14 de manière à former un doigt d'actionnement en saillie axiale. A l'opposé de ce doigt d'actionnement, une portion du poussoir 16 dépasse également du noyau mobile 14. Le noyau fixe 13 est traversé par un trou axial dans lequel passe cette portion, sur laquelle le ressort 17 est enfilé en étant entouré par le noyau fixe 13.One end of the pusher 16 protrudes from the movable core 14 so as to form an axially projecting actuating finger. Opposite this actuating finger, a portion of the pusher 16 also protrudes from the movable core 14. The fixed core 13 is traversed by an axial hole through which this portion passes, on which the spring 17 is threaded while being surrounded by the fixed core 13.

Le passage axial 12 comprend trois sections 23, 25 et 26 qui se succèdent axialement. La section 26 est une section médiane de plus petit diamètre raccordant entre elles les sections 23 et 25, qui débouchent dans deux directions axialement opposées et qui ont avantageusement un même diamètre.The axial passage 12 comprises three sections 23, 25 and 26 which succeed each other axially. The section 26 is a median section of smaller diameter interconnecting the sections 23 and 25, which open in two axially opposite directions and which advantageously have the same diameter.

Outre la palette 4 et l'un des ressorts de traction 6, d'autres constituants du mécanisme à accumulation d'énergie évoqué précédemment en relation avec la figure 2 sont visibles à la figure 3. Sur l'agrandissement que constitue la figure 4, on voit encore mieux la manière dont les constituants de ce mécanisme à accumulation d'énergie sont agencés et comment ils coopèrent.In addition to the pallet 4 and one of the traction springs 6, other constituents of the energy storage mechanism mentioned above in relation to with the figure 2 are visible to the figure 3 . On the enlargement that constitutes the figure 4 it is even better to see how the constituents of this energy storage mechanism are arranged and how they cooperate.

La palette 4 est prévue pour entraîner l'organe 3 de déclenchement de destiné à coopérer avec une barre de déclenchement vers une position de décrochement. Lorsque cette position de décrochement est atteinte, il se produit un décrochement d'un mécanisme de commande de disjoncteur présent dans le disjoncteur D. D'une manière connue en soi, ce décrochement conduit à un déclenchement, et à l'ouverture des contacts du disjoncteur D.The pallet 4 is provided to drive the trigger member 3 for cooperating with a trigger bar to a recess position. When this set-back position is reached, a recess of a circuit-breaker control mechanism present in the circuit-breaker D occurs. In a manner known per se, this recess leads to a tripping, and to the opening of the contacts of the circuit breaker. circuit breaker D.

Comme cela a été déjà mentionné plus haut, la palette 4 est montée à basculement autour d'un axe référencé X1-X'1. Les deux ressorts de traction 6 servent à accumuler de l'énergie en vue d'actionner la palette 4 à partir de sa position des figures 3 et 4, où le déclencheur auxiliaire 1 est dans un état armé neutre. Chaque ressort 6 possède deux extrémités opposées, qui sont recourbées chacune de manière à former un crochet et qui sont une extrémité fixe d'ancrage accrochée à une barrette fixe de retenue 28 et une extrémité mobile d'actionnement accrochée à une partie d'accouplement 29 de la pièce 4.As already mentioned above, the pallet 4 is mounted to tilt around an axis referenced X 1 -X ' 1 . The two traction springs 6 serve to accumulate energy in order to actuate the pallet 4 from its position of the figures 3 and 4 , where the auxiliary trigger 1 is in a neutral armed state. Each spring 6 has two opposite ends, which are bent each to form a hook and which are a fixed anchoring end hooked to a fixed retaining bar 28 and a movable actuating end hooked to a coupling portion 29 from room 4.

La palette 4 comprend une extrémité d'accrochage 30 qui est éloignée de l'axe de basculement X1-X'1, de manière à pouvoir tourner autour de cet axe lorsque la palette 4 est actionnée.The pallet 4 comprises a hooking end 30 which is remote from the tilting axis X 1 -X ' 1 , so as to be able to turn about this axis when the pallet 4 is actuated.

Le mécanisme à accumulation d'énergie comprend en outre un verrou pivotant 31, qui est porté par un arbre 32 de manière à pouvoir pivoter autour d'un axe de pivotement X2-X'2 sensiblement parallèle à l'axe de basculement X1-X'1.The energy storage mechanism further comprises a pivoting latch 31, which is carried by a shaft 32 so as to be pivotable about a pivot axis X 2 -X ' 2 substantially parallel to the tilting axis X 1 -X ' 1 .

Un ressort 33 rappelle en permanence le verrou 31 autour de l'axe de pivotement X2-X'2 (dans le sens des aiguilles d'une montre sur les figures 3 et 4). Le ressort 33 est enroulé autour d'une barrette 34 dont chaque extrémité fait partie d'un des paliers 5. Deux branches du ressort 33 sont en permanence en appui contre la barrette fixe de retenue 28 qui les empêche de basculer autour de la barrette 34, dans le sens des aiguilles d'une montre à la figure 3.A spring 33 constantly recalls the latch 31 around the pivot axis X 2 -X ' 2 (clockwise on the figures 3 and 4 ). The spring 33 is wound around a bar 34, each end of which is part of one of the bearings 5. Two branches of the spring 33 are permanently resting against the fixed retaining bar 28 which prevents them from tilting around the bar 34 , clockwise to the figure 3 .

Ainsi qu'on peut bien le voir à la figure 5, le verrou 31 comporte deux branches 40 et 41 angulairement décalées l'une de l'autre autour de l'axe de pivotement X2-X'2. La branche 40 se trouve sur la trajectoire du poussoir 16, qui peut ainsi exercer sur elle une poussée d'actionnement du verrou 31 d'une position de verrouillage à une position de libération. Au niveau de son extrémité libre, la branche 40 se termine par un poussoir 42, qui est dirigé globalement vers la pièce 4 de manière à pouvoir recevoir une poussée d'actionnement, de la part de cette pièce 4. Outre ce poussoir 42, le verrou 31 comporte un coude 43 dont la concavité est tournée vers la pièce 4. A l'opposé de cette pièce 4, le coude comporte un dos en saillie, qui définit une zone de réception d'une poussée exercée par le poussoir 16 à chaque déclenchement.As can be seen from the figure 5 , the latch 31 comprises two branches 40 and 41 angularly offset from one another about the pivot axis X 2 -X ' 2 . The branch 40 is in the path of the pusher 16, which can thus exert on it an actuating thrust of the latch 31 from a locking position to a release position. At its free end, the branch 40 ends with a pusher 42, which is generally directed towards the part 4 so as to be able to receive an actuating thrust, from this part 4. In addition to this pusher 42, the latch 31 has a bend 43 whose concavity is turned towards the part 4. Opposite this piece 4, the bend has a protruding back, which defines a receiving zone of a thrust exerted by the pusher 16 at each trigger.

Le ressort 33 comporte un bras d'actionnement 44, par l'intermédiaire duquel il agit sur le verrou 31 en poussant sur la branche 40 de celui-ci. Le poussoir 42 et le coude 43 forment ensemble un crochet auquel le bras d'actionnement 44 est accroché de manière robuste.The spring 33 comprises an actuating arm 44, through which it acts on the latch 31 by pushing on the branch 40 thereof. The pusher 42 and the elbow 43 together form a hook to which the actuating arm 44 is securely hooked.

La branche 41 du verrou 31 forme un doigt d'accrochage se terminant par une tête d'accrochage 45 prévue pour retenir par accrochage la palette 4 dans une position neutre, c'est-à-dire dans la position des figure 3 à 5 où le mécanisme à accumulation d'énergie est armé. La tête d'accrochage 45 comporte un bec 46 où s'effectue l'accrochage de la pièce 4. Ainsi qu'on peut bien le voir à la figure 5, le bec 46 est en saillie globalement selon une direction A passant par l'axe de pivotement X2-X'2. De la sorte, il comporte une extrémité saillante 47 où s'effectue l'appui de la pièce 4 lorsque cette pièce 4 est accrochée au verrou 31 dans sa position de verrouillage. Dans l'exemple représenté où le verrou 31 possède le bec 46, ce dernier est plus précisément en saillie vers l'axe de pivotement X2-X'2. En alternative, on peut imaginer que le bec 46 soit porté par la pièce 4, auquel cas il est globalement dirigé dans la direction opposée à l'axe de pivotement X2-X'2.The branch 41 of the latch 31 forms a gripping finger ending in a gripping head 45 designed to snap the pallet 4 into a neutral position, that is to say in the position of the figure 3 to 5 where the energy storage mechanism is armed. The attachment head 45 has a spout 46 which is the hooking of the piece 4. As can be seen in the figure 5 , the spout 46 is generally projecting in a direction A passing through the pivot axis X 2 -X ' 2 . In this way, it has a protruding end 47 where the support of the part 4 is carried out when this part 4 is hooked on the latch 31 in its locking position. In the example shown where the latch 31 has the spout 46, the latter is more precisely projecting towards the pivot axis X 2 -X ' 2 . Alternatively, one can imagine that the spout 46 is carried by the part 4, in which case it is generally directed in the opposite direction to the pivot axis X 2 -X ' 2 .

Sur la figure 3, un courant électrique d'excitation parcourt constamment la bobine 7 de sorte que la force électromagnétique générée maintient le noyau mobile 14 contre le noyau fixe 13. Le doigt d'actionnement constitué par une extrémité du poussoir 16, se trouve alors à une faible distance, appelée "garde", de la branche 40 du verrou 31.On the figure 3 , an electric excitation current constantly travels the coil 7 so that the electromagnetic force generated keeps the movable core 14 against the fixed core 13. The actuating finger formed by an end of the pusher 16 is then at a short distance , called "guard", of the branch 40 of the lock 31.

Sur la figure 3 comme sur les figures 4 et 5, le mécanisme à accumulation d'énergie du déclencheur auxiliaire 1 est armé, dans la mesure où la palette 4 est accrochée au verrou 31 se trouvant dans sa position de verrouillage. Le verrou 31 retient de ce fait la palette 4 dans une position neutre, à l'encontre d'un rappel exercé par les deux ressorts 6 ensemble. Ces deux ressorts 6 stockent ainsi une énergie à même d'actionner la palette 4 vers une position active.On the figure 3 as on the Figures 4 and 5 , the energy storage mechanism of the auxiliary trigger 1 is armed, insofar as the pallet 4 is hooked to the latch 31 being in its locking position. The latch 31 thus retains the pallet 4 in a neutral position, against a bias exerted by the two springs 6 together. These two springs 6 and store energy able to operate the pallet 4 to an active position.

L'appui de la palette 4 sur le verrou 31 est localisé à l'extrémité saillante 47 lorsque ce verrou 31 effectue un verrouillage du mécanisme à accumulation d'énergie dans un état armé, comme c'est le cas aux figures 3 à 5. Il s'ensuit que ce verrouillage est stable, au contraire d'un verrouillage résultant d'un accrochage déverrouillant. Un accrochage stable produisant un verrouillage stable est encore appelé verrouillant. Il s'agit d'un accrochage positif insensible à des variations susceptibles d'affecter différents paramètres de construction. En d'autres termes, un accrochage verrouillant est sûr, sans risque de décrochage accidentel, même en présence de telles variations qui peuvent concerner les dimensions des pièces et/ou des réglages de position et/ou les raideurs des ressorts.The support of the pallet 4 on the latch 31 is located at the projecting end 47 when the latch 31 performs a locking of the energy storage mechanism in an armed state, as is the case with Figures 3 to 5 . It follows that this lock is stable, unlike a lock resulting from an unlocking hook. A stable snap producing a stable lock is still called a lock. This is a positive snap that is insensitive to variations that may affect different parameters of construction. In other words, a locking latch is safe, without the risk of accidental stall, even in the presence of such variations that may concern the dimensions of the parts and / or position settings and / or the stiffness of the springs.

Lorsqu'il est dans sa position de verrouillage, le verrou 31 est soumis à deux couples contraires par rapport à l'axe de pivotement X2-X'2. Subissant les tractions des deux ressorts 6, la palette 4 exerce un premier de ces deux couples, au niveau de la tête d'accrochage 45. Le bras d'actionnement 44 exerce le deuxième couple sur le verrou 31. Pourtant, la force exercée par ce bras d'actionnement 44 peut être choisie de manière à être faible. Cette force peut ne pas intervenir dans le verrouillage réalisé par le verrou 31 car ce verrouillage résulte d'un accrochage stable ou verrouillant.When in its locking position, the latch 31 is subjected to two opposite pairs with respect to the pivot axis X 2 -X ' 2 . Undergoing the pulls of the two springs 6, the pallet 4 exerts a first of these two pairs, at the attachment head 45. The actuating arm 44 exerts the second torque on the latch 31. However, the force exerted by this actuating arm 44 may be chosen so as to be weak. This force may not intervene in the locking made by the latch 31 because this lock is a result of a stable locking or locking.

Si le courant d'excitation circulant dans la bobine 7 est coupé ou amené sous un seuil prédéterminé, c'est-à-dire si la tension aux bornes de ladite bobine 7 devient nulle ou inférieure à un seuil prédéterminé, la force de compression du premier ressort 17 devient supérieure à la force d'attraction du noyau mobile 14 vers le noyau fixe 13. Le poussoir 16 est alors entraîné vers la branche 40 du verrou 31, jusqu'à pousser cette branche 40 au niveau du dos du coude 43 et ainsi amener le verrou 31 à pivoter vers sa position de libération.If the excitation current flowing in the coil 7 is cut or brought under a predetermined threshold, that is to say if the voltage across said coil 7 becomes zero or less than a predetermined threshold, the compression force of the coil first spring 17 becomes greater than the force of attraction of the movable core 14 towards the fixed core 13. The pusher 16 is then driven towards the branch 40 of the latch 31, until pushing this branch 40 at the back of the elbow 43 and thus bring the latch 31 to pivot to its release position.

Lors de l'actionnement du verrou 31 de sa position de verrouillage à sa position de libération, la palette 4 se décroche de ce verrou 31, provoquant un déverrouillage du mécanisme à accumulation d'énergie. Suite à ce déverrouillage, les ressorts 6 se rétractent moyennant une libération de l'énergie stockée par eux et ils entraînent ensemble la palette 4, depuis sa position neutre de la figure 3 à sa position active de la figure 6. Lors de son basculement de sa position neutre à sa position active, la palette 4 effectue un mouvement provoquant un déclenchement du disjoncteur D. Plus précisément, la palette 4 entraîne alors l'organe de déclenchement 3 en translation, qui manoeuvre à son tour la barre de déclenchement du disjoncteur D jusqu'à un déclenchement effectif de ce disjoncteur D. La figure 6 illustre l'état du déclencheur auxiliaire 1 à l'issue du déclenchement de son mécanisme à accumulation d'énergie, c'est-à-dire à l'issue du mouvement de la palette 4 jusqu'à sa position active, sous l'action des ressorts 6.When the latch 31 is actuated from its locking position to its release position, the pallet 4 is detached from this latch 31, causing the energy storage mechanism to be unlocked. Following this unlocking, the springs 6 retract by means of a release of the energy stored by them and they together drive the pallet 4, from its neutral position of the figure 3 at its active position the figure 6 . When it moves from its neutral position to its active position, the pallet 4 makes a movement causing a tripping of the circuit breaker D. More specifically, the pallet 4 then drives the tripping member 3 in translation, which in turn operates the trip bar of the circuit breaker D until an effective tripping of this circuit breaker D. figure 6 illustrates the state of the auxiliary trigger 1 after the triggering of its energy storage mechanism, that is to say at the end of the movement of the pallet 4 to its active position, under the spring action 6.

La figure 7 illustre le réarmement du mécanisme à accumulation d'énergie du déclencheur auxiliaire 1, après un déclenchement ayant conduit à l'état de la figure 6. Ce réarmement peut être effectué avec succès après que la bobine 7 a été remise sous tension. Une fois correctement remise sous tension, la bobine 7 produit une force électromagnétique agissant sur le noyau mobile 14, dans le sens d'un retour de ce noyau mobile vers le noyau fixe 13. Cette force électromagnétique est inférieure à celle exercée par le ressort 17, tant que le noyau mobile 14 est trop éloigné du noyau fixe 13. En d'autres termes, la remise correcte sous tension de la bobine 7 est insuffisante à elle seule pour faire effectivement retourner le noyau mobile 14 vers le noyau fixe 13.The figure 7 illustrates the resetting of the energy storage mechanism of the auxiliary trip unit 1, after a trip that has led to the state of the figure 6 . This resetting can be done successfully after the coil 7 has been turned back on. Once properly energized, the coil 7 produces an electromagnetic force acting on the movable core 14, in the direction of a return of this movable core to the fixed core 13. This electromagnetic force is lower than that exerted by the spring 17 as long as the movable core 14 is too far away from the fixed core 13. In other words, the correct re-energization of the coil 7 is insufficient on its own to effectively return the movable core 14 to the fixed core 13.

Après que la bobine 7 a été correctement remise sous tension, le réarmement du mécanisme à accumulation d'énergie du déclencheur auxiliaire MN résulte d'un réarmement du disjoncteur D. Un tel réarmement du disjoncteur D est le fait d'un actionnement manuel de la manette générant un mouvement, lequel est transmis à la palette 4 de manière que celle-ci bascule vers sa position neutre. Cela se produit à la figure 7, où le basculement de la palette 4 vers sa position neutre est symbolisé par la flèche B. Lors de son basculement B, la palette 4 exerce une poussée P vers le noyau fixe 13, sur le poussoir 42 de la branche 40, qui transmet cette poussée P au poussoir 16 du coulisseau. Transmise par la branche 40, la poussée P repousse ce coulisseau vers le noyau fixe 13. Lorsque le coulisseau est suffisamment enfoncé en direction du noyau fixe 13, la force électromagnétique générée par la bobine 7 sur le noyau mobile 14 devient supérieure à la force produite par le ressort 17, après quoi elle parvient à entraîner le noyau mobile 14 dans le sens d'un retour vers le noyau fixe 13 après la disparition de la poussée P.After the coil 7 has been correctly turned back on, the resetting of the energy storage mechanism of the auxiliary trip unit MN results from a reset of the circuit breaker D. Such a resetting of the circuit breaker D is the result of a manual actuation of the joystick generating a movement, which is transmitted to the pallet 4 so that it tilts to its neutral position. This happens at the figure 7 , where the tilting of the pallet 4 towards its neutral position is symbolized by the arrow B. When it tilts B, the pallet 4 exerts a thrust P towards the fixed core 13, on the pusher 42 of the branch 40, which transmits this push P to the pusher 16 of the slider. Transmitted by the branch 40, the thrust P pushes this slider towards the fixed core 13. When the slider is sufficiently depressed towards the fixed core 13, the force electromagnetic generated by the coil 7 on the movable core 14 becomes greater than the force produced by the spring 17, after which it manages to drive the movable core 14 in the direction of a return to the fixed core 13 after the disappearance of the thrust P.

Lors de l'entraînement du noyau mobile 14 uniquement par la bobine 7, sans la poussée P, le pivotement du verrou 31 vers sa position de verrouillage se poursuit sous l'effet du rappel élastique produit par le ressort 33. La fin du réarmement du disjoncteur D se traduit par l'arrêt d'une action sur la palette 4 à l'encontre des ressorts 6, qui amènent ensuite la palette 4 à s'accrocher au bec 46 de la tête d'accrochage 45. Après cela, le mécanisme à accumulation d'énergie du déclencheur auxiliaire MN est réarmé, c'est-à-dire dans son état des figures 3 à 5.When driving the movable core 14 only by the coil 7, without the thrust P, the pivoting of the latch 31 towards its locking position continues under the effect of the elastic return produced by the spring 33. The end of the rearming of the circuit breaker D results in the stop of an action on the pallet 4 against the springs 6, which then cause the pallet 4 to hook to the spout 46 of the attachment head 45. After that, the mechanism energy accumulation of the auxiliary trip unit MN is rearmed, that is to say in its state of Figures 3 to 5 .

La bobine 7 consomme une faible puissance électrique pour créer la force juste suffisante pour maintenir comprimé le ressort 17, ce dernier pouvant en effet présenter une raideur très faible et, malgré cela, être apte à actionner le verrou 31, éventuellement grâce à la garde entre le poussoir 16 et le verrou 31.The coil 7 consumes a low electrical power to create the force just sufficient to maintain the compressed spring 17, the latter may indeed have a very low stiffness and, despite this, be able to actuate the latch 31, possibly through the guard between the pusher 16 and the latch 31.

Un déclencheur auxiliaire de l'art antérieur est représenté à la figure 2 du document US 5,512,720 , où une référence 40 désigne une pièce d'appui et de réglage. Un ressort de compression analogue au ressort 17 est comprimé entre cette pièce d'appui et de réglage et un noyau mobile analogue au noyau mobile 14. La pièce d'appui et de réglage prévue dans le document US 5,512,720 est montée par vissage à l'intérieur d'un noyau fixe analogue au noyau fixe 13. Grâce à cela, on peut régler sa position axiale par rapport au noyau fixe et ainsi régler la force de rappel exercée par le ressort de compression. Contrairement au noyau fixe du déclencheur représenté à la figure 2 du document US 5,512,720 , le noyau fixe 13 du déclencheur auxiliaire 1 conforme à l'invention peut être dépourvu d'une pièce d'appui et de réglage servant à régler le taux de compression du ressort qui rappelle le noyau mobile 14 à l'écart du noyau fixe 13. Cela est le cas dans l'exemple représenté et il en résulte un avantage notamment en termes de simplification et de coût de production. Un autre choix consistant à permettre un réglage du rappel élastique du noyau mobile 14, peut être également fait sans sortir du cadre de l'invention.An auxiliary trigger of the prior art is shown in FIG. figure 2 of the document US5,512,720 , where a reference 40 designates a support and adjustment piece. A compression spring similar to the spring 17 is compressed between this support and adjustment piece and a movable core similar to the movable core 14. The support piece and adjustment provided in the document US5,512,720 is mounted by screwing inside a fixed core similar to the fixed core 13. With this, one can adjust its axial position relative to the fixed core and thus adjust the restoring force exerted by the compression spring. Unlike the fixed core of the trigger shown in figure 2 of the document US5,512,720 , the fixed core 13 of the auxiliary release 1 according to the invention may be devoid of a support piece and adjustment to adjust the compression ratio of the spring reminding the movable core 14 away from the fixed core 13. This is the case in the example shown and results in an advantage especially in terms of simplification and cost of production. Another choice consisting in allowing an adjustment of the elastic return of the mobile core 14 can also be done without departing from the scope of the invention.

Sur la figure 8, un autre déclencheur auxiliaire conforme à l'invention est désigné par la référence 101. Il s'agit plus précisément d'un déclencheur auxiliaire MX à déclenchement par émission de courant. Dans ce qui suit, on ne décrit que ce par quoi il se distingue du déclencheur auxiliaire 1. En outre, une référence utilisée ci-après pour désigner une partie du déclencheur auxiliaire 101 analogue ou équivalente à une partie référencée du déclencheur auxiliaire 1 est construite en augmentant de cent (100) la référence repérant cette partie sur le déclencheur auxiliaire 1.On the figure 8 , another auxiliary trigger according to the invention is designated by the reference 101. It is more specifically an auxiliary trigger MX current triggering. In what follows, only what is distinguished from the auxiliary trigger 1 is described. In addition, a reference used hereinafter to designate a part of the auxiliary trigger 101 analogous or equivalent to a referenced part of the auxiliary trigger 1 is constructed. by increasing by one hundred (100) the reference identifying this part on the auxiliary trigger 1.

De manière avantageuse, la plupart des pièces du déclencheur auxiliaire 101 sont identiques aux pièces du déclencheur auxiliaire 1. Tel est le cas, par exemple, des noyaux fixes 13 et 113, ainsi que des noyaux mobiles 14 et 114.Advantageously, most of the parts of the auxiliary trigger 101 are identical to the parts of the auxiliary trigger 1. This is the case, for example, fixed cores 13 and 113, as well as moving cores 14 and 114.

Egalement de manière avantageuse, une grande partie des pièces communes aux déclencheurs auxiliaires 1 et 101 peuvent en outre être montées de la même manière dans les deux déclencheurs auxiliaires 1 et 101. Tel est le cas, par exemple, des boîtiers 2 et 102, des palettes 4 et 104, des ressorts 6 et 106, des fourreaux 11 et 111, des poussoirs 16 et 116, des verrous 31 et 131, des barrettes 34 et 134, ainsi que des ressorts 33 et 133.Advantageously, a large part of the common parts auxiliary trip units 1 and 101 can also be mounted in the same way in the two auxiliary triggers 1 and 101. This is the case, for example, of housings 2 and 102, pallets 4 and 104, springs 6 and 106, sleeves 11 and 111, pushers 16 and 116, latches 31 and 131, bars 34 and 134, and springs 33 and 133.

En outre, n'importe lequel d'entre le déclencheur auxiliaire 1 à déclenchement par manque de tension MN et le déclencheur auxiliaire 101 à déclenchement par émission de courant MX peut être indifféremment monté de manière opérationnelle dans le logement complémentaire de montage et d'accouplement L du disjoncteur D, ce qui est encore avantageux. En d'autres termes, le disjoncteur D est apte à recevoir indifféremment soit le déclencheur auxiliaire 1 à déclenchement par manque de tension MN, soit le déclencheur auxiliaire 101 à déclenchement par émission de courant MX.In addition, any of the auxiliary trigger 1 to tripping due to lack of voltage MN and the auxiliary trigger 101 to trigger current emission MX can be indifferently mounted operationally in the additional housing mounting and coupling L of the circuit breaker D, which is still advantageous. In other words, the circuit breaker D is able to receive indifferently either the auxiliary trigger 1 triggered by lack of voltage MN, or the auxiliary trigger 101 triggered by current emission MX.

Une différence entre les déclencheurs auxiliaires 1 et 101 est que le noyau fixe 13 est monté fixement dans la section 23, alors que le noyau fixe 113 est monté fixement dans la section 125.A difference between the auxiliary triggers 1 and 101 is that the fixed core 13 is fixedly mounted in the section 23, while the fixed core 113 is fixedly mounted in the section 125.

Une autre différence entre les déclencheurs auxiliaires 1 et 101 est que le noyau mobile 14 est monté coulissant axialement dans la section 25, alors que le noyau mobile 114 est monté coulissant axialement dans la section 123.Another difference between the auxiliary releases 1 and 101 is that the movable core 14 is axially slidably mounted in the section 25, while the movable core 114 is axially slidably mounted in the section 123.

Sur la figure 8, le déclencheur auxiliaire 101 est dans un état armé neutre, c'est-à-dire dans l'état où le déclencheur 1 se trouve à la figure 3.On the figure 8 , the auxiliary trigger 101 is in a neutral armed state, that is to say in the state where the trigger 1 is at the figure 3 .

Sur la figure 9, le déclencheur auxiliaire 101 est dans un état déclenché, c'est-à-dire dans l'état où le déclencheur 1 se trouve à la figure 6.On the figure 9 , the auxiliary trigger 101 is in a triggered state, that is to say in the state where the trigger 1 is at the figure 6 .

Le déclencheur auxiliaire 101 à déclenchement par émission de courant MX fonctionne à l'inverse du déclencheur auxiliaire 1 en ce que ce déclencheur auxiliaire 101 provoque un déclenchement du disjoncteur D, lorsqu'un courant électrique de commande supérieur à un seuil prédéterminé se met à parcourir la bobine 107.The auxiliary trigger 101 to trigger by current emission MX operates in contrast to the auxiliary trigger 1 in that this auxiliary trigger 101 causes a tripping of the circuit breaker D, when a control electric current greater than a predetermined threshold begins to run the coil 107.

Claims (7)

  1. An auxiliary trip unit for tripping a circuit breaker (D) according to an electric command, comprising:
    - a drive part (3) associated with a blade (4 ; 104) that is movable between a neutral position and an active position,
    - at least one flexible actuating means (6 ; 106) designed to store mechanical energy when the blade is in its neutral position, and to actuate it from its neutral position to its active position, by means of said energy, with a movement producing a tripping operation of the circuit breaker (D), following unlatching of the blade (4 ; 104),
    - a latch (31 ; 131) fitted swivelling around a swivelling axis (X2-X'2) and designed to secure the blade (4 ; 104) in its neutral position, against releasing of said energy, until movement of the latch (31 ; 131) takes place to a releasing position in which said unlatching takes place,
    - a first bias spring (33 ; 133) fitted to bias the latch (31 ; 131) to a latching position in which the latch (31 ; 131) secures the blade (4 ; 104) in its neutral position,
    - a thrust slide (14, 16 ; 114, 116) to propel the latch out of its latching position to its released position,
    - a second bias spring (17) of the slide (14, 16 ; 114, 116) in a first direction,
    - an electric coil (7 ; 107) generating an electromagnetic force to drive the slide (14, 16 ; 114, 116) against the second bias spring (17), in a second direction opposite to the first direction, when this coil (7 ; 107) is supplied by said electric command,
    characterized in that the latch (31 ; 131) comprises a nose (46) salient in a direction (A) passing through the swivelling axis (X2-X'2) so as to comprise a salient end (47) where localized latching of the blade (4 ; 104) takes place when said latch (31 ; 131) in the latching position secures the blade (4 ; 104) in the neutral position, and in that said latch (31 ; 131) is designed to receive a thrust force (P) acting in the direction of resetting of the blade to the latching position.
  2. The auxiliary trip unit according to claim 1, characterized in that the latch (31 ; 131) comprises a push-rod (42) actuated by said thrust force (P) of the blade (4 ; 104).
  3. The auxiliary trip unit according to claim 1, characterized in that the latch (31 ; 131) comprises at least a first branch (41) forming a finger provided with said nose (46).
  4. The auxiliary trip unit according to claim 3, characterized in that the latch (31 ; 131) comprises a second branch (40) angularly offset from the first branch (41) around said swivelling axis (X2-X'2) and placed on the path of the slide (14, 16 ; 114, 116) so as to be able to receive an actuating thrust to the released position, from the slide (14, 16 ; 114, 116), this second branch (40) comprising said push-rod (42).
  5. The auxiliary trip unit according to claim 4, characterized in that the first bias spring (33 ; 133) comprises an actuating arm (44) by means of which the first bias spring (33 ; 133) acts directly on the second branch (40) of the latch (31 ; 131), the push-rod (42) forming at least one terminal portion of a hook (42, 43) on which the actuating arm (44) constituting the first bias spring (33 ; 133) is latched.
  6. The auxiliary trip unit according to either one of claims 4 or 5, characterized in that the second branch (40) is terminated by said push-rod (42).
  7. The auxiliary trip unit according to claim 1, characterized in that the second bias spring (17) exerts a bias on the slide (14, 16) to actuate the latch (31) from the latching position to the released position.
EP13354038.5A 2012-11-19 2013-10-14 Auxiliary tripping device for tripping a circuit breaker Active EP2733719B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1203097A FR2998416B1 (en) 2012-11-19 2012-11-19 AUXILIARY TRIGGER FOR TRIPPING A CIRCUIT BREAKER

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EP2733719A1 EP2733719A1 (en) 2014-05-21
EP2733719B1 true EP2733719B1 (en) 2015-07-01

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US (1) US9123495B2 (en)
EP (1) EP2733719B1 (en)
CN (1) CN103839734B (en)
ES (1) ES2545065T3 (en)
FR (1) FR2998416B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD798244S1 (en) * 2015-06-23 2017-09-26 Schneider Electric Industries Sas Electrical circuit breaker
USD789894S1 (en) * 2015-06-23 2017-06-20 Schneider Electric Industries Sas Electrical circuit breaker
CN105070611A (en) * 2015-08-05 2015-11-18 浙江凯发电气股份有限公司 Tripping mechanism of residual current circuit breaker
CN108417465A (en) * 2018-04-19 2018-08-17 浙江九策智能电气有限公司 A kind of tripping mechanism of leakage circuit breakers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1432433A (en) * 1918-06-21 1922-10-17 Westinghouse Electric & Mfg Co Latching device
US5343179A (en) * 1993-01-29 1994-08-30 Eaton Corporation Miniaturized solenoid operated trip device
FR2704090B1 (en) * 1993-04-16 1995-06-23 Merlin Gerin AUXILIARY TRIGGER FOR CIRCUIT BREAKER.
US5946179A (en) * 1997-03-25 1999-08-31 Square D Company Electronically controlled circuit breaker with integrated latch tripping
DE102008030822A1 (en) * 2008-06-30 2010-01-07 Robert Seuffer Gmbh & Co. Kg Switching device with triggering device

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US20140139301A1 (en) 2014-05-22
FR2998416A1 (en) 2014-05-23
FR2998416B1 (en) 2015-01-16
US9123495B2 (en) 2015-09-01
ES2545065T3 (en) 2015-09-08
EP2733719A1 (en) 2014-05-21
CN103839734B (en) 2017-12-12
CN103839734A (en) 2014-06-04

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