EP2733720A1 - Thermal-magnetic tripping device for tripping a polyphase circuit breaker - Google Patents
Thermal-magnetic tripping device for tripping a polyphase circuit breaker Download PDFInfo
- Publication number
- EP2733720A1 EP2733720A1 EP20130354040 EP13354040A EP2733720A1 EP 2733720 A1 EP2733720 A1 EP 2733720A1 EP 20130354040 EP20130354040 EP 20130354040 EP 13354040 A EP13354040 A EP 13354040A EP 2733720 A1 EP2733720 A1 EP 2733720A1
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- EP
- European Patent Office
- Prior art keywords
- transmission bar
- pawl
- transmission
- pivot axis
- bar
- 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.)
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- 230000011664 signaling Effects 0.000 claims description 28
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- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- 239000004020 conductor Substances 0.000 description 5
- 210000000056 organ Anatomy 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
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- 230000004224 protection Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
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Classifications
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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
- H01H71/04—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
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—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
Definitions
- the invention relates to a magnetothermal trip device for monitoring a plurality of phase currents flowing through a polyphase circuit breaker and for tripping this polyphase circuit breaker in the event of an anomaly affecting at least one of the phase currents.
- a circuit breaker can be used to simultaneously provide two protections, namely protection against persistent overcurrents, also called overloads of current, and protection against very high currents resulting from a short circuit.
- the tripping of the circuit-breaker that is to say the opening of its contacts, can be controlled by a thermomagnetic trip unit, which recognizes the current overloads as short-circuits.
- EP 0 848 404 a part of a magnetothermal trip device is described which has many advantages, for example the advantage of being directly associated with any one or more polyphase breakers of a certain type, so as to be able to control their tripping. .
- Another part of this magnetothermal circuit breaker is presented in the European patent application EP 0 542 641 .
- the European patent application EP 0 954 002 proposes a circuit breaker able to mechanically display the cause of a trip among a current overload and a short circuit.
- Another example of a circuit breaker that can mechanically display the cause of a trip among a current overload and a short circuit is in the patent. US 6,239,677 United States of America.
- the mechanism for tripping the circuit breaker in the event of a short-circuit or overload is complex and has many components.
- this mechanism is bulky and it is not adaptable or easily adaptable to certain circuit breakers.
- the object of the invention is at least to enable a magnetothermal trip device for monitoring a plurality of phase and tripping currents of a circuit breaker to be able to mechanically display the cause of tripping among a current overload and a short circuit. -circuit, while not very complex.
- the first and second transmission bars are decoupled from one another in rotation about the pivot axis.
- the trigger comprises a first elastic member reminding the first transmission bar to a rest position, a second elastic member reminding the second transmission bar to a rest position, and a third elastic member reminding the ratchet to away from its release position and towards its locking position.
- the first transmission bar comprises a plurality of first bearings threaded onto the support shaft, as well as at least a first connecting bar rigidly connecting the first bearings to each other, the second transmission bar having a plurality of second bearings threaded onto the support shaft. support, and at least a second connecting bar rigidly connecting the second bearings to each other, the first and second bearings being offset with each other along said pivot axis.
- the first transmission bar comprises first arms arranged so that, by acting on one of these arms, each thermal actuator can rotate the first transmission bar in the second direction.
- the second transmission bar has second arms arranged so that, by acting on one of these arms, each magnetic actuator can rotate the second transmission bar in the second direction.
- a magnetothermal trip and polyphase 1 is intended to be associated with a polyphase circuit breaker not shown, such as that described in the European patent application EP 0 542 636 .
- the purpose of trigger 1 is to monitor the phase currents flowing in the polyphase circuit breaker phases and to trip this circuit breaker in the event of a current overload in one of the phases or in the event of a short circuit affecting at least one of the phases. one of the phases.
- the trigger 1 has three phases 2, each of which comprises a conductor 3 intended to be traversed by one of the phase currents to be monitored.
- the trigger 1 comprises an insulating envelope, which comprises an assembly box 4 and a front panel 5 fixed to one another.
- Each conductor 3 has the shape of a tab several times bent, each end of which forms an electrical connection terminal 6 protruding outside the assembly box 4.
- a pivoting adjustment member 7 is accessible through a hole in the frontage 5.
- the trigger 1 comprises two identical indicators 11 and 12, whose function is to indicate together which cause among a current overload and a short circuit was at the origin of a past trip command. More specifically, when a past trip command has been generated by the circuit breaker 1 due to a current overload crossing a conductor 3, this is indicated by the indicator 11.
- the indicator 12 is used to signal each trip command past that was generated by the circuit breaker 1 due to a short circuit.
- Each of the indicators 11 and 12 comprises a push button 13 and a window 14 passing through the facade 5 from one side to the other.
- each of the indicators 11 and 12 further comprises a signal member 15, which mounted behind a front wall of the front 5 so as to be pivotable about a pivot axis XX 'substantially perpendicular to the front wall.
- Each push button 13 passes through the front 5, at the level of a finger of one of the signaling members 15. It can exert a transverse thrust on the finger, after having itself been pushed manually from the outside.
- the trigger 1 comprises an energy storage mechanism 20 known per se, a striker 21 is visible at the figure 3 .
- This striker 21 is a trigger piece that can be tilted about a tilting axis Y 1 -Y ' 1 , between a neutral position and an active position to which the striker 1 is resiliently biased by a spring not visible in the figures.
- the energy storage mechanism 20 is armed, insofar as the striker 21 is retained in its neutral position because of its attachment to a pawl 30 itself being in a latching position.
- the pawl 30 is part of an intermediate transmission device which comprises two other pivoting parts, namely two transmission rods 31 and 32.
- the pawl 30 and the transmission rods 31 and 32 are mounted on one and the same common support shaft 33. , so that they can all pivot around the same pivot axis Y 2 -Y ' 2 .
- the support shaft 33 is secured to the housing 4 by its two opposite ends.
- the transmission bars 31 and 32 are decoupled from each other in pivoting about their common pivot axis Y 2 -Y ' 2 .
- a compression spring 34 forms an elastic return member of the pawl 30 towards its hooking position, about the pivot axis Y 2 -Y ' 2 , in a direction S 1 .
- the reference S 2 designates the opposite direction in the S 1 direction.
- a compression spring 35 forms a resilient return member of the transmission bar 31 in the direction S 1 , about the pivot axis Y 2 -Y ' 2 , to a rest position.
- a torsion spring 36 forms a resilient return member of the transmission bar 32 in the direction S 1 , about the pivot axis Y 2 -Y ' 2 , to a rest position.
- a bimetallic thermal actuator 40 is provided for each phase.
- the thermal actuators 40 are shown schematically in the figure 4 . Each of them may possess the constitution and operation described in the patent application European EP 0 542 641 supra.
- Each thermal actuator 40 is configured to generate a mechanical triggering command in response to a current overload in the corresponding phase.
- This mechanical triggering control has the form of a thrust that a head 41 of the thermal actuator 40 exerts on the transmission bar 31 and which acts in the opposite direction of the spring 35, in the direction S 2 around the Y-axis 2 -Y ' 2 .
- the arrow P 1 symbolizes an example of such a thrust exerted by a thermal actuator 40.
- a magnetic actuator 42 is provided for each phase.
- the magnetic actuators 42 are shown schematically in the figure 4 . Each of them may possess the constitution and operation described in the European patent application EP 0 848 404 supra.
- Each magnetic actuator 42 is configured to generate a mechanical triggering command in response to a short circuit relating to the corresponding phase.
- This mechanical triggering control has the form of a thrust that a movable flap 43 of the magnetic actuator 42 exerts on the transmission bar 32 and which acts in the opposite direction of the spring 36, in the direction S 2 around the Y axis 2 -Y ' 2 .
- the arrow P 2 symbolizes an example of such a thrust exerted by a magnetic actuator 42.
- the transmission bar 31 is shown alone at the figure 5 . It comprises three mounting bearings 50, which are threaded onto the support shaft 33, offset between them along the pivot axis Y 2 -Y ' 2 and rigidly connected by an axial connecting bar 51. Transmission 31 also comprises as many arms 52 for receiving a thrust P 1 as there are thermal actuators 40. Each mounting bearing 50 carries one of the arms 52, each of which comprises an attached pusher 53 remote from the pivot axis Y 2 -Y ' 2 .
- each head 41 can exert a mechanical triggering control in the form of a thrust P 1 , on a pusher 53 in order to rotate the transmission rod 31 in the direction S 2 in response to a current overload.
- One of the arms 52 carries a finger 54 for actuating the signaling member 15 of the indicator 11.
- the transmission bar 51 has a shoulder 55 for pushing on the pawl 30 to drive it into its release position, as will be specified later.
- the transmission rod 31 can be slid along the support shaft 33. Its axial position can be adjusted by means of the adjustment member 7.
- the transmission bar 31 comprises a coupling fork 56 to this adjustment member 7.
- the bearings 50, the bar 51, the arms 52, the finger 54 and the fork 56 are part of an integral piece, molded in polymer, to which the pushers 53 are fixed.
- the transmission bar 32 is shown alone at the figure 6 . It comprises three mounting bearings 60, which are threaded onto the support shaft 33, offset between them along the pivot axis Y 2 -Y ' 2 and rigidly connected by an axial connecting bar 61.
- the bar of FIG. transmission 32 also comprises as many arms 62 for receiving a thrust P 2 as there are magnetic actuators 42. Carried by one of the hubs 60, each arm 62 comprises a pusher 63 remote from the pivot axis Y 2 -Y ' 2 .
- each flap 43 can exert a mechanical triggering control in the form of a thrust P 2 , on a pusher 63 , in order to rotate the transmission bar 32 in the direction S 2 , in response to a short circuit.
- a bearing 60 carries an arm 64 for actuating the signaling member 15 of the indicator 12.
- Each of two successive bearings 60 carries a hooking lug 65, which defines one of two flat surfaces 66 of thrust on the pawl 30 so as to drive it into its release position, as will be specified later.
- the transmission bar 32 is a single piece, molded of polymer.
- the pawl 30 is shown alone to figures 7 and 8 . It comprises a mounting hub 70, which is threaded onto the support shaft 33 and which carries a finger 71 for retaining the striker 21 by hooking. At a distance from the hub 70, the free end of the finger 71 is provided with a catch 72 for attaching the striker 21.
- the pawl 30 defines a surface 73 extending outwardly from the hub 70, substantially parallel to the Y 2 -Y ' 2 axis. This surface 73 is configured to cooperate with the shoulder 55 and to receive a thrust of the latter.
- the pawl 30 further defines two surfaces 74 extending outwardly from the hub 70, substantially parallel to the Y 2 -Y ' 2 axis. These surfaces 74 are configured to cooperate with the thrust surfaces 66 and to simultaneously receive thrusts thereof.
- a signaling member 15 is shown alone at the figure 9 . It comprises a crank arm 80, which is pierced with a mounting hole of a not shown support shaft, centered on the pivot axis X-X '.
- the crank arm 80 carries a rear crank pin 81 offset relative to the pivot axis X-X ', a flexible finger 82 substantially perpendicular to this pivot axis X-X', and a flexible arc 83 for returning the crank. the signaling member 15 to a masked state.
- the finger 82 is elastically flexible rearwardly, in a plane parallel to the pivot axis X-X '. Its free end carries a projection 84 able to engage in a window 14 and thus lock the signal member 15 in a visible state indicating that a trip has occurred.
- the thermal actuator 40 associated with this phase 3 produces a displacement resulting in a thrust P 1 , rotating the transmission rod 31 in the direction S 2 .
- the shoulder 55 clings to the surface 73 and then pushes on it in the direction S 2 and thus pivots the pawl 30 to its release position, which is illustrated by the figure 10 .
- the striker 21 has unhooked the spout 72 and it will move and accelerate until a percussion causing the tripping of the circuit breaker.
- the pivoting of the transmission rod 31 in the direction S 2 causes the finger 54 to push on the pin 81 present in the indicator 11 and thus actuate the signaling member 15 of the indicator 11.
- this signaling member 15 Prior to the appearance of a current overload, this signaling member 15 was in its masked state, which is the one shown in FIG. figure 12 .
- the signaling member 15 of the indicator 11 is held in the same angular position as at the figure 2 due to the elastic return exerted by its flexible bow 83. It is then completely masked by the facade 5.
- the finger 82 of the indicator 11 is curved resiliently towards the rear.
- the finger 54 rotates the signal member 15 of the indicator 11, about the pivot axis XX 'corresponding, against the bias exerted by the arc 83 of this signaling member 15.
- the signaling member 15 of the indicator 11 has changed state and it is in its visible state, which is the one shown in FIGS. Figures 13 and 14 .
- the finger 82 of the indicator 11 has recovered itself and is now rectilinear. Its projection 84 is engaged in the window 14 of the indicator 11, which locks the signal member 15 of the indicator 11 in its visible state. The visible presence of the projection 84 of the indicator 11 in the window 14 of this indicator 11 indicates that a trip following a current overload has occurred.
- the pivoting of the transmission bar 32 in the direction S 2 causes the arm 64 to push on the crank pin 81 of the signaling member 15, in the indicator 12, and thus actuate this signaling member 15.
- the signaling member 15 of the indicator 12 was in its masked state, which is the one shown in FIG. figure 2 .
- this signaling member 15 has changed state and it is in its visible state, which is that of the figure 17 and which is analogous to the state represented in figure 13 .
- the visible presence of the projection 84 of the indicator 12 in the window 14 of the same indicator 12 indicates that a trip following a short circuit has occurred.
- the transmission bar 32 is configured to be part of a large-caliper magnetothermal trip unit. Modifications can be made to this bar to adapt it to a small magnetothermal release. These modifications may relate in particular to the conformation of the arms 62 and their angular position around the axis Y 2 -Y ' 2 .
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- Physics & Mathematics (AREA)
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Abstract
Description
L'invention concerne un déclencheur magnétothermique de surveillance de plusieurs courants de phase traversant un disjoncteur polyphasé et de déclenchement de ce disjoncteur polyphasé en cas d'anomalie affectant au moins l'un des courants de phase.The invention relates to a magnetothermal trip device for monitoring a plurality of phase currents flowing through a polyphase circuit breaker and for tripping this polyphase circuit breaker in the event of an anomaly affecting at least one of the phase currents.
Un disjoncteur peut être employé pour procurer simultanément deux protections, à savoir une protection contre des surintensités persistantes, encore appelées surcharges de courant, et une protection contre des courants très élevés résultant d'un court-circuit. Le déclenchement du disjoncteur, c'est-à-dire l'ouverture de ses contacts, peut être commandé par un déclencheur magnétothermique, qui reconnaît les surcharges de courant comme les courts-circuits.A circuit breaker can be used to simultaneously provide two protections, namely protection against persistent overcurrents, also called overloads of current, and protection against very high currents resulting from a short circuit. The tripping of the circuit-breaker, that is to say the opening of its contacts, can be controlled by a thermomagnetic trip unit, which recognizes the current overloads as short-circuits.
Dans la demande de brevet européen
Après un déclenchement provoqué par un court-circuit, l'origine de ce court-circuit doit être recherchée avant que le disjoncteur soit de nouveau fermé. Un déclenchement consécutif à une surcharge de courant ne nécessite généralement pas les mêmes mesures d'inspection qu'un déclenchement provoqué par un court-circuit. Il est donc souhaitable de pouvoir savoir si, après un déclenchement d'un disjoncteur, la cause de ce déclenchement était une surcharge de courant ou un court-circuit.After tripping caused by a short circuit, the origin of this short circuit must be sought before the circuit breaker is closed again. A trip following a current overload usually does not require the same inspection measures as a trip caused by a short circuit. It is therefore desirable to be able to know if, after a tripping of a circuit breaker, the cause of this tripping was a current overload or a short circuit.
La demande de brevet européen
L'invention a au moins pour but de permettre qu'un déclencheur magnétothermique de surveillance de plusieurs courants de phase et de déclenchement d'un disjoncteur soit à même d'afficher mécaniquement la cause d'un déclenchement parmi une surcharge de courant et un court-circuit, tout en étant peu complexe.The object of the invention is at least to enable a magnetothermal trip device for monitoring a plurality of phase and tripping currents of a circuit breaker to be able to mechanically display the cause of tripping among a current overload and a short circuit. -circuit, while not very complex.
Selon l'invention, ce but est atteint grâce à un déclencheur magnétothermique de surveillance de plusieurs courants de phase traversant un disjoncteur polyphasé et de déclenchement de ce disjoncteur polyphasé en cas d'anomalie affectant au moins l'un des courants de phase. Ce déclencheur magnétothermique comporte :
- plusieurs phases,
- plusieurs actionneurs thermiques dont chacun est prévu pour réagir à une surcharge de courant dans une des phases en générant une commande mécanique de déclenchement,
- plusieurs actionneurs magnétiques dont chacun est prévu pour réagir à un court-circuit dans une des phases en générant une commande mécanique de déclenchement,
- un dispositif intermédiaire de transmission configuré pour pouvoir recevoir n'importe laquelle des commandes mécanique de déclenchement et comportant un cliquet rappelé élastiquement dans un premier sens, vers une position de verrouillage, et agencé de manière qu'une réception d'une commande de déclenchement par le dispositif de transmission amène ce cliquet à passer de sa position de verrouillage, dans laquelle le cliquet peut retenir par accrochage une pièce de déclenchement dans un état neutre, à une position de libération, dans laquelle la pièce de déclenchement est décrochée du cliquet,
- un arbre de support sur lequel le cliquet est monté de manière à pouvoir pivoter autour d'un axe de pivotement, entre ses positions de verrouillage et de libération,
- un premier indicateur prévu pour signaler un déclenchement provoqué par une surcharge de courant, et
- un deuxième indicateur prévu pour signaler un déclenchement provoqué par un court-circuit.
- several phases,
- a plurality of thermal actuators each of which is provided to react to a current overload in one of the phases by generating a mechanical triggering command,
- a plurality of magnetic actuators each of which is provided to react to a short circuit in one of the phases by generating a mechanical triggering command,
- an intermediate transmission device configured to be able to receive any of the mechanical triggering commands and having a pawl resiliently biased in a first direction, to a locking position, and arranged so that a reception of a tripping command by the transmission device causes this pawl to pass from its locking position, in which the pawl can hold a trigger piece in a neutral state, in a release position, in which the trigger piece is detached from the pawl,
- a support shaft on which the pawl is rotatably mounted about a pivot axis, between its locking and releasing positions,
- a first indicator intended to signal a tripping caused by a current overload, and
- a second indicator provided to signal a trigger caused by a short circuit.
Le dispositif intermédiaire de transmission comporte :
- une première barre de transmission montée sur ledit arbre de support de manière à pouvoir être pivotée autour du même axe de pivotement que le cliquet, dans un deuxième sens contraire au premier sens, par n'importe lequel des actionneurs thermiques, selon un mouvement lors duquel cette première barre de transmission à la fois entraîne le cliquet de sa position de verrouillage à sa position de libération et fait changer d'état le premier indicateur, et
- une deuxième barre de transmission montée sur ledit arbre de support de manière à pouvoir être pivotée autour du même axe de pivotement que le cliquet, dans le deuxième sens, par n'importe lequel des actionneurs magnétiques, selon un mouvement lors duquel cette deuxième barre de transmission à la fois entraîne le cliquet de sa position de verrouillage à sa position de libération et fait changer d'état le deuxième indicateur.
- a first transmission bar mounted on said support shaft so as to be pivotable about the same pivot axis as the pawl, in a second direction contrary to the first direction, by any of the thermal actuators, according to a movement in which this first transmission bar at the same time drives the pawl from its locking position to its release position and causes the first indicator to change state, and
- a second transmission bar mounted on said support shaft so as to be pivotable about the same pivot axis as the pawl, in the second direction, by any of the magnetic actuators, according to a movement in which this second bar of transmission at a time drives the pawl from its locking position to its release position and causes the second indicator to change state.
Les premières et deuxièmes barres de transmission sont découplées l'une de l'autre en pivotement autour de l'axe de pivotement.The first and second transmission bars are decoupled from one another in rotation about the pivot axis.
Selon une réalisation préférentielle, le déclencheur comporte un premier organe élastique rappelant la première barre de transmission vers une position de repos, un deuxième organe élastique rappelant la deuxième barre de transmission vers une position de repos, et un troisième organe élastique rappelant le cliquet à l'écart de sa position de libération et vers sa position de verrouillage. La première barre de transmission comporte plusieurs premiers paliers enfilés sur l'arbre de support, ainsi qu'au moins une première barrette de liaison associant rigidement les premiers paliers entre eux, la deuxième barre de transmission comportant plusieurs deuxièmes paliers enfilés sur l'arbre de support, ainsi qu'au moins une deuxième barrette de liaison associant rigidement les deuxièmes paliers entre eux, les premiers et deuxièmes paliers étant décalés entre eux le long dudit axe de pivotement.According to a preferred embodiment, the trigger comprises a first elastic member reminding the first transmission bar to a rest position, a second elastic member reminding the second transmission bar to a rest position, and a third elastic member reminding the ratchet to away from its release position and towards its locking position. The first transmission bar comprises a plurality of first bearings threaded onto the support shaft, as well as at least a first connecting bar rigidly connecting the first bearings to each other, the second transmission bar having a plurality of second bearings threaded onto the support shaft. support, and at least a second connecting bar rigidly connecting the second bearings to each other, the first and second bearings being offset with each other along said pivot axis.
Selon une caractéristique de l'invention, la première barre de transmission comporte des premiers bras agencés de manière que, en agissant sur l'un de ces bras, chaque actionneur thermique peut faire pivoter la première barre de transmission dans le deuxième sens.According to a feature of the invention, the first transmission bar comprises first arms arranged so that, by acting on one of these arms, each thermal actuator can rotate the first transmission bar in the second direction.
D'une manière similaire, la deuxième barre de transmission comporte des deuxièmes bras agencés de manière que, en agissant sur l'un de ces bras, chaque actionneur magnétique peut faire pivoter la deuxième barre de transmission dans le deuxième sens.In a similar manner, the second transmission bar has second arms arranged so that, by acting on one of these arms, each magnetic actuator can rotate the second transmission bar in the second direction.
L'un au moins des premier et deuxième indicateurs comporte :
- une fenêtre ménagée à travers une enveloppe du déclencheur magnétothermique, et
- un organe de signalement déplaçable entre un premier état, dans lequel aucune portion de cet organe de signalement ne se trouve au niveau de la fenêtre, et un deuxième état, dans lequel l'organe de signalement est au moins partiellement visible de l'extérieur par la fenêtre.
- a window formed through an envelope of the magnetothermal release, and
- a signaling member displaceable between a first state, in which no portion of this signaling member is at the level of the window, and a second state, in which the signaling member is at least partially visible from the outside by the window.
D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode particulier de réalisation de l'invention donné à titre d'exemple non limitatif et représenté aux dessins annexés, parmi lesquels :
- la
figure 1 est une vue en perspective d'un déclencheur magnétothermique conforme à l'invention et prévu pour être associé à un disjoncteur polyphasé de manière à pouvoir en commander le déclenchement, - la
figure 2 est une vue de face représentant le même déclencheur que lafigure 1 , sans sa façade avant, - la
figure 3 est une vue en perspective et en coupe selon le plan III de lafigure 2 , et représente le même déclencheur que lafigure 1 , sans sa façade avant, - la
figure 4 est une vue en perspective, pour partie schématique, représentant seulement certains constituants internes du déclencheur de lafigure 1 , notamment une première barre de transmission, une deuxième barre de transmission et un cliquet d'un dispositif intermédiaire de transmission, - la
figure 5 est une vue en perspective de la première barre de transmission visible à lafigure 4 , - la
figure 6 est une vue en perspective de la deuxième barre de transmission visible à lafigure 4 , - la
figure 7 est une vue en perspective du cliquet visible à lafigure 4 , - la
figure 8 est une vue en perspective et en coupe représentant le même cliquet que lafigure 7 , sous un autre angle, - la
figure 9 est une vue en perspective de l'un de deux organes de signalement identiques qui sont constitutifs du déclencheur de lafigure 1 et servent dans l'indication visuelle de quelle sorte de cause est à l'origine d'un déclenchement commandé par ce déclencheur, - la
figure 10 est un agrandissement d'une fenêtre extraite d'une vue en coupe selon un plan parallèle au plan III, avec perspective, et illustre un actionnement du cliquet de lafigure 7 par la première barre de transmission représentée à lafigure 5 , en cas de surcharge de courant, - la
figure 11 est un agrandissement d'une fenêtre extraite d'une vue en perspective et illustre un actionnement de l'organe de signalement de lafigure 9 par la première barre de transmission représentée à lafigure 5 , en cas de surcharge de courant, - la
figure 12 est une vue partielle et simplifiée, en coupe selon le plan XII de lafigure 1 , et représente l'organe de signalement de lafigure 9 , ainsi que d'autres constituants d'un indicateur constitutif du déclencheur de lafigure 1 , - la
figure 13 est une vue analogue à lafigure 12 et représente les mêmes constituants que cettefigure 12 après un changement d'état de l'indicateur comprenant ces constituants, - la
figure 14 est une vue de face du déclencheur de lafigure 1 sans sa façade avant et montre quelles sont les positions respectives des deux organes de signalement après une commande de déclenchement générée par le déclencheur du fait d'une surcharge de courant dans une phase, - la
figure 15 est un agrandissement d'une fenêtre extraite d'une vue en coupe selon un plan parallèle au plan III, avec perspective, et illustre un actionnement du cliquet de lafigure 7 par la deuxième barre de transmission représentée à lafigure 6 , en cas de court-circuit, - la
figure 16 est un agrandissement d'une fenêtre extraite d'une vue en perspective et illustre un actionnement de l'organe de signalement identique à celui de lafigure 7 , par la deuxième barre de transmission représentée à lafigure 6 , en cas de court-circuit, - la
figure 17 est une vue de face du déclencheur de lafigure 1 sans sa façade avant et montre quelles sont les positions respectives des deux organes de signalement après une commande de déclenchement générée par le déclencheur du fait d'un court-circuit.
- the
figure 1 is a perspective view of a magnetothermal release according to the invention and intended to be associated with a polyphase circuit breaker so as to be able to control the tripping, - the
figure 2 is a front view representing the same trigger as thefigure 1 , without its front façade, - the
figure 3 is a perspective and sectional view according to plan III of thefigure 2 , and represents the same trigger as thefigure 1 , without its front façade, - the
figure 4 is a perspective view, partly schematic, showing only certain internal constituents of the trigger of thefigure 1 , in particular a first transmission bar, a second transmission bar and a pawl of an intermediate transmission device, - the
figure 5 is a perspective view of the first visible transmission bar at thefigure 4 , - the
figure 6 is a perspective view of the second visible transmission bar at thefigure 4 , - the
figure 7 is a perspective view of the ratchet visible at thefigure 4 , - the
figure 8 is a perspective and sectional view showing the same ratchet as thefigure 7 , From another angle, - the
figure 9 is a perspective view of one of two identical signaling organs that constitute the trigger of thefigure 1 and serve in the visual indication of what kind of cause is causing a trigger triggered by this trigger, - the
figure 10 is an enlargement of a window extracted from a sectional view along a plane parallel to the plane III, with perspective, and illustrates an actuation of the ratchet of thefigure 7 by the first transmission bar shown in thefigure 5 , in case of current overload, - the
figure 11 is an enlargement of a window extracted from a perspective view and illustrates an actuation of the organ of reporting thefigure 9 by the first transmission bar shown in thefigure 5 , in case of current overload, - the
figure 12 is a partial and simplified view, in section according to plan XII of thefigure 1 , and represents the reporting body of thefigure 9 , as well as other constituents of an indicator constitutive of the trigger of thefigure 1 , - the
figure 13 is a view similar to thefigure 12 and represents the same constituents as thisfigure 12 after a change of state of the indicator comprising these constituents, - the
figure 14 is a front view of the trigger of thefigure 1 without its front panel and shows what are the respective positions of the two signaling elements after a triggering command generated by the trigger due to a current overload in a phase, - the
figure 15 is an enlargement of a window extracted from a sectional view along a plane parallel to the plane III, with perspective, and illustrates an actuation of the ratchet of thefigure 7 by the second transmission bar shown in thefigure 6 in case of a short circuit, - the
figure 16 is an enlargement of a window extracted from a perspective view and illustrates an actuation of the signaling member identical to that of thefigure 7 , by the second transmission bar shown in thefigure 6 in case of a short circuit, - the
figure 17 is a front view of the trigger of thefigure 1 without its front panel and shows what are the respective positions of the two signaling bodies after a trigger command generated by the trigger due to a short circuit.
Sur la
Dans l'exemple représenté, le déclencheur 1 possède trois phases 2, dont chacune comprend un conducteur 3 destiné à être parcouru par l'un des courants de phase à surveiller. Le déclencheur 1 comporte une enveloppe isolante, qui comprend un boîtier d'assemblage 4 et une façade avant 5 fixés l'un à l'autre. Chaque conducteur 3 possède la forme d'une languette plusieurs fois coudée, dont chaque extrémité forme une borne de connexion électrique 6 dépassant à l'extérieur du boîtier d'assemblage 4.In the example shown, the
Un organe de réglage pivotant 7 est accessible par un trou ménagé dans la façade 5.A pivoting
Le déclencheur 1 comporte deux indicateurs 11 et 12 identiques, qui ont pour fonction d'indiquer ensemble quelle cause parmi une surcharge de courant et un court-circuit a été à l'origine d'une commande de déclenchement passée. Plus précisément, lorsqu'une commande de déclenchement passée a été générée par le disjoncteur 1 du fait d'une surcharge de courant traversant un conducteur 3, cela est signalé par l'indicateur 11. L'indicateur 12 sert à signaler chaque commande de déclenchement passée qui a été générée par le disjoncteur 1 du fait d'un court-circuit. Chacun des indicateurs 11 et 12 comporte un bouton poussoir 13 et une fenêtre 14 traversant la façade 5 de part en part.The
Ainsi qu'on peut le voir à la
Le déclencheur 1 comprend un mécanisme à accumulation d'énergie 20 connu en soi, dont un percuteur 21 est visible à la
On se réfère maintenant à la
Un ressort de compression 34 forme un organe élastique de rappel du cliquet 30 vers sa position d'accrochage, autour de l'axe de pivotement Y2-Y'2, dans un sens S1. La référence S2 désigne le sens inverse au sens S1.A
Un ressort de compression 35 forme un organe élastique de rappel de la barre de transmission 31 dans le sens S1, autour de l'axe de pivotement Y2-Y'2, vers une position de repos. Lorsque le cliquet 30 se trouve dans sa position d'accrochage et que la barre de transmission 31 se trouve dans sa position de repos, il existe une garde dont la barre de transmission 31 doit être pivotée dans le sens S2 avant de pouvoir entraîner avec elle le cliquet 30 dans le même sens S2.A
Un ressort de torsion 36 forme un organe élastique de rappel de la barre de transmission 32 dans le sens S1, autour de l'axe de pivotement Y2-Y'2, vers une position de repos. Lorsque le cliquet 30 se trouve dans sa position d'accrochage et que la barre de transmission 32 se trouve dans sa position de repos, il existe une garde dont la barre de transmission 32 doit être pivotée dans le sens S2 avant de pouvoir entraîner avec elle le cliquet 30 dans le même sens S2.A
Dans un souci de clarté, les ressorts de rappel 34, 35 et 36 ne sont représentés qu'à la
Dans le déclencheur 1, un actionneur thermique 40 à bilame est prévu pour chaque phase. Connus en eux-mêmes, les actionneurs thermiques 40 sont représentés schématiquement à la
Dans le déclencheur 1, un actionneur magnétique 42 est prévu pour chaque phase. Connus en eux-mêmes, les actionneurs magnétiques 42 sont représentés schématiquement à la
La barre de transmission 31 est représentée seule à la
Les bras 52 sont décalés entre eux, le long de l'axe de pivotement Y2-Y'2, de manière que chaque tête 41 puisse exercer une commande mécanique de déclenchement sous la forme d'une poussée P1, sur un poussoir 53, afin de faire pivoter la barre de transmission 31 dans le sens S2, en réaction à une surcharge de courant.The
L'un des bras 52 porte un doigt 54 d'actionnement de l'organe de signalement 15 de l'indicateur 11.One of the
La barrette de transmission 51 comporte un épaulement 55 de poussée sur le cliquet 30 pour entraîner celui-ci jusque dans sa position de libération, comme cela sera précisé ultérieurement.The
La barre de transmission 31 peut être coulissée le long de l'arbre de support 33. Sa position axiale peut être réglée au moyen de l'organe de réglage 7. A cet effet, la barre de transmission 31 comporte une fourchette 56 d'accouplement à cet organe de réglage 7.The
Les paliers 50, la barrette 51, les bras 52, le doigt 54 et la fourchette 56 font partie d'une pièce d'un seul tenant, moulée en polymère, à laquelle sont fixés les poussoirs 53.The
La barre de transmission 32 est représentée seule à la
Les bras 62 sont décalés entre eux, le long de l'axe de pivotement Y2-Y'2, de manière que chaque volet 43 puisse exercer une commande mécanique de déclenchement sous la forme d'une poussée P2, sur un poussoir 63, afin de faire pivoter la barre de transmission 32 dans le sens S2, en réaction à un court-circuit.The
Un palier 60 porte un bras 64 d'actionnement de l'organe de signalement 15 de l'indicateur 12.A bearing 60 carries an
Chacun de deux paliers 60 successifs porte un ergot d'accrochage 65, qui définit l'une de deux surfaces planes 66 de poussée sur le cliquet 30 de manière à entraîner celui-ci jusque dans sa position de libération, comme cela sera précisé ultérieurement.Each of two
La barre de transmission 32 est une pièce d'un seul tenant, moulée en polymère.The
Le cliquet 30 est représenté seul aux
Le cliquet 30 définit une surface 73 s'étendant vers l'extérieur à partir du moyeu 70, de manière sensiblement parallèle à l'axe Y2-Y'2. Cette surface 73 est configurée pour coopérer avec l'épaulement 55 et pour recevoir une poussée de ce dernier. Le cliquet 30 définit en outre deux surfaces 74 s'étendant vers l'extérieur à partir du moyeu 70, de manière sensiblement parallèle à l'axe Y2-Y'2. Ces surfaces 74 sont configurées pour coopérer avec les surfaces de poussée 66 et pour recevoir en même temps des poussées de ces dernières.The
Un organe de signalement 15 est représenté seul à la
Lorsqu'une surcharge de courant circule dans le conducteur 3 de l'une des phases 2, l'actionneur thermique 40 associé à cette phase 3 produit un déplacement se traduisant par une poussée P1, faisant pivoter la barre de transmission 31 dans le sens S2. Il s'ensuit que l'épaulement 55 s'accroche à la surface 73 puis pousse sur celle-ci dans le sens S2 et fait ainsi pivoter le cliquet 30 jusqu'à sa position de libération, ce qu'illustre la
Comme l'illustre la
Lors du pivotement de la barre de transmission 31 dans le sens S2, le doigt 54 fait pivoter l'organe de signalement 15 de l'indicateur 11, autour de l'axe de pivotement X-X' correspondant, à l'encontre du rappel exercé par l'arc 83 de cet organe de signalement 15. Après son actionnement par le doigt 54, l'organe de signalement 15 de l'indicateur 11 a changé d'état et il se trouve dans son état visible, qui est celui représenté aux
Une fois que la cause de la surcharge de courant a été éliminée, une poussée manuelle sur le bouton poussoir 13 de l'indicateur 11 amène ce bouton poussoir à courber élastiquement le doigt 82 vers l'arrière et à faire sortir la saillie 84 hors de la fenêtre 14, dans cet indicateur 11. Lorsque cette saillie 84 est sortie de la fenêtre 14 correspondante, l'arc 83 de l'organe de signalement 15 de l'indicateur 11 replace cet organe de signalement 15 dans son état masqué des
Lorsqu'un courant de court-circuit circule dans le conducteur 3 de l'une des phases 2, l'actionneur magnétique 42 associé à cette phase 3 produit un déplacement se traduisant par une poussée P2, qu'un volet 43 applique sur un poussoir 62. Cette poussée P2 fait pivoter la barre de transmission 32 dans le sens S2. Il s'ensuit que les ergots 65 s'appliquent sur les surfaces 74, puis poussent de concert sur celles-ci dans le sens S2 et font ainsi pivoter le cliquet 30 jusqu'à sa position de libération, ce qu'illustre la
Comme l'illustre la
Une fois que la cause du court-circuit a été éliminée, une poussée manuelle sur le bouton poussoir 13 de l'indicateur 12 amène l'organe de signalement 15 correspondant à se replacer dans son état masqué de la
L'invention ne se limite pas au mode de réalisation décrit précédemment. En particulier, la barre de transmission 32 est configurée pour faire partie d'un déclencheur magnétothermique de gros calibre. Des modifications peuvent être apportées à cette barre pour l'adapter à un déclencheur magnétothermique de petit calibre. Ces modifications peuvent porter en particulier sur la conformation des bras 62 et sur leur position angulaire autour de l'axe Y2-Y'2.The invention is not limited to the embodiment described above. In particular, the
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1203098A FR2998415B1 (en) | 2012-11-19 | 2012-11-19 | MAGNETOTHERMIC TRIGGER TRIPPING OF A POLYPHASE CIRCUIT BREAKER |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2733720A1 true EP2733720A1 (en) | 2014-05-21 |
EP2733720B1 EP2733720B1 (en) | 2015-07-29 |
Family
ID=47739343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13354040.1A Active EP2733720B1 (en) | 2012-11-19 | 2013-10-25 | Thermal-magnetic tripping device for tripping a polyphase circuit breaker |
Country Status (5)
Country | Link |
---|---|
US (1) | US9024711B2 (en) |
EP (1) | EP2733720B1 (en) |
CN (1) | CN103824735B (en) |
ES (1) | ES2547344T3 (en) |
FR (1) | FR2998415B1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104637739B (en) * | 2015-01-27 | 2016-08-24 | 浙江天正电气股份有限公司 | A kind of release apparatus with overload and short-circuit protection indicating fault |
CN205789807U (en) | 2016-06-27 | 2016-12-07 | 施耐德电器工业公司 | A kind of hot dropout collocation structure |
KR101869724B1 (en) * | 2017-01-05 | 2018-06-21 | 엘에스산전 주식회사 | Magnetic trip device for circuit breaker |
KR102299858B1 (en) * | 2017-03-15 | 2021-09-08 | 엘에스일렉트릭 (주) | Magnetic trip mechanism for circuit breaker |
US10468219B2 (en) * | 2017-09-07 | 2019-11-05 | Carling Technologies, Inc. | Circuit interrupter with status indication |
FR3076065B1 (en) * | 2017-12-21 | 2020-11-20 | Schneider Electric Ind Sas | TRIGGER FOR AN ELECTRICAL SWITCHING DEVICE AND ELECTRICAL SWITCHING DEVICE INCLUDING SUCH A TRIP TRIGGER |
Citations (6)
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EP0542641A1 (en) | 1991-11-13 | 1993-05-19 | Schneider Electric Sa | Process and device for adjusting a thermal bimetal tripping device |
EP0542636A1 (en) | 1991-10-15 | 1993-05-19 | Schneider Electric Sa | Multipole circuit-breaker being composed of single-pole units |
EP0848404A1 (en) | 1996-12-13 | 1998-06-17 | Schneider Electric Sa | Selective tripping block for multipole circuit breaker |
EP0954002A2 (en) | 1998-04-29 | 1999-11-03 | AEG Niederspannungstechnik GmbH & Co. KG | Thermal magnetic circuit breakers |
US6239677B1 (en) | 2000-02-10 | 2001-05-29 | General Electric Company | Circuit breaker thermal magnetic trip unit |
DE102008008032A1 (en) * | 2008-02-06 | 2009-08-13 | Siemens Aktiengesellschaft | Release device for releasing electrical switch, has elements that are arranged such that one of elements causes release movement of other element during execution of release movement, where latter element is moved along with former element |
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US3258560A (en) * | 1964-04-14 | 1966-06-28 | Gen Electric | Electric circuit breaker with novel tripping assembly |
US5121092A (en) * | 1991-02-04 | 1992-06-09 | General Electric Company | Molded case circuit breaker thermal-magnetic trip accelerator |
US6137386A (en) * | 1999-08-18 | 2000-10-24 | Eaton Corporation | Circuit breaker with trip unit mounted tripping plunger and latch therefore |
WO2002082486A2 (en) * | 2001-03-29 | 2002-10-17 | General Electric Company | Circuit breaker thermal magnetic trip unit |
US7323956B1 (en) * | 2005-07-29 | 2008-01-29 | Eaton Corporation | Electrical switching apparatus and trip unit including one or more fuses |
CN201608125U (en) * | 2010-01-12 | 2010-10-13 | 上海良信电器股份有限公司 | Mechanism for displaying thermomagnetic trip type in circuit breaker |
CN102347171B (en) * | 2010-07-30 | 2014-03-26 | 上海良信电器股份有限公司 | Device for distinguishing and indicating fault of thermomagnetic tripping device |
-
2012
- 2012-11-19 FR FR1203098A patent/FR2998415B1/en not_active Expired - Fee Related
-
2013
- 2013-10-25 EP EP13354040.1A patent/EP2733720B1/en active Active
- 2013-10-25 ES ES13354040.1T patent/ES2547344T3/en active Active
- 2013-11-15 US US14/081,304 patent/US9024711B2/en active Active
- 2013-11-19 CN CN201310581526.9A patent/CN103824735B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0542636A1 (en) | 1991-10-15 | 1993-05-19 | Schneider Electric Sa | Multipole circuit-breaker being composed of single-pole units |
EP0542641A1 (en) | 1991-11-13 | 1993-05-19 | Schneider Electric Sa | Process and device for adjusting a thermal bimetal tripping device |
EP0848404A1 (en) | 1996-12-13 | 1998-06-17 | Schneider Electric Sa | Selective tripping block for multipole circuit breaker |
EP0954002A2 (en) | 1998-04-29 | 1999-11-03 | AEG Niederspannungstechnik GmbH & Co. KG | Thermal magnetic circuit breakers |
US6239677B1 (en) | 2000-02-10 | 2001-05-29 | General Electric Company | Circuit breaker thermal magnetic trip unit |
DE102008008032A1 (en) * | 2008-02-06 | 2009-08-13 | Siemens Aktiengesellschaft | Release device for releasing electrical switch, has elements that are arranged such that one of elements causes release movement of other element during execution of release movement, where latter element is moved along with former element |
Also Published As
Publication number | Publication date |
---|---|
US20140139302A1 (en) | 2014-05-22 |
CN103824735A (en) | 2014-05-28 |
ES2547344T3 (en) | 2015-10-05 |
CN103824735B (en) | 2017-08-15 |
EP2733720B1 (en) | 2015-07-29 |
US9024711B2 (en) | 2015-05-05 |
FR2998415A1 (en) | 2014-05-23 |
FR2998415B1 (en) | 2015-01-16 |
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