EP0295167A1 - Test unit for electrical differential protection apparatus and apparatus incorporating this unit - Google Patents

Test unit for electrical differential protection apparatus and apparatus incorporating this unit Download PDF

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Publication number
EP0295167A1
EP0295167A1 EP88401263A EP88401263A EP0295167A1 EP 0295167 A1 EP0295167 A1 EP 0295167A1 EP 88401263 A EP88401263 A EP 88401263A EP 88401263 A EP88401263 A EP 88401263A EP 0295167 A1 EP0295167 A1 EP 0295167A1
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EP
European Patent Office
Prior art keywords
test
branch
contact
assembly according
test assembly
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.)
Granted
Application number
EP88401263A
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German (de)
French (fr)
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EP0295167B1 (en
Inventor
Jean-Marie Roiatti
Denis Deckert
Olivier Duez
Michel Fuchs
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Hager Electro SAS
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Hager Electro SAS
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Priority to AT88401263T priority Critical patent/ATE84376T1/en
Publication of EP0295167A1 publication Critical patent/EP0295167A1/en
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Publication of EP0295167B1 publication Critical patent/EP0295167B1/en
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    • 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
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • 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
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • H01H2083/045—Auxiliary switch opening testing circuit in synchronism with the main circuit

Definitions

  • the present invention relates to a test assembly for a differential electrical protection device such as a differential switch or differential circuit breaker as well as to devices which are provided with it.
  • Devices of this kind often include test means actuated by a push button and making it possible to verify that the electrical imbalance between the main conductors passing through the device and passing through a differential toroid, triggers the protection device. and opening, by a suitable mechanism, the main contact or contacts.
  • the actuation of the test push button causes a partial diversion of one of the main conductors, through a resistor, to another main conductor, the imbalance thus produced, detected by the differential toroid, causing the actuation of the mechanism in the direction of contact opening.
  • test devices currently used on these devices have the drawback of being relatively complex and difficult to assemble and, consequently, expensive.
  • the test resistor is often poorly protected and can be burnt out in the event of a malfunction.
  • the invention proposes to remedy these drawbacks and to provide a test set for an electrical protection device such as a differential switch or a differential circuit breaker, which is particularly simple and inexpensive.
  • Another object of the invention is to provide such a test assembly which provides excellent protection of the calibrated test resistance.
  • Another objective of the invention is to allow a power supply independent of the device from above or from below.
  • Another object of the invention is to provide such an assembly which can be easily mounted in an existing appliance housing.
  • Another object of the invention is to provide such an assembly forming a unit capable of being pre-assembled, and then mounted, in an apparatus, in a particularly suitable location.
  • the subject of the invention is a test assembly for a differential electrical protection device, such as a differential switch or differential circuit breaker, of the type comprising a push button actuating contact means for partially bypassing a main conductor of the device.
  • a differential electrical protection device such as a differential switch or differential circuit breaker
  • a calibrated test resistor with a conductive strip having two elastic branches cooperating at their free ends, with a fixed contact connected to one of the conductors of the main circuit and with a fixed contact of the calibrated test resistor, the first branch being arranged in the course of a contact opening mechanism element of the apparatus arranged to move said first branch away from its contact when the main contacts of the device are opened, the second branch cooperating with the push button arranged to push it towards the contact of the test resistor, characterized in that it comprises a support formed of an insulating part receiving the blade and forming the housing in which the push-button slides, said support having means allowing it to be simply fixed, immobilized or clipped on an electrical differential protection device inside
  • the conductive strip is bent approximately at right angles, the first branch, preferably the longest, extending in the vicinity of the mechanism element intended to cause its separation from its fixed contact, if the device is in the open position, while the second branch, preferably the shortest, passes under the push button capable of moving in a direction substantially parallel to that of the first branch.
  • the blade thus produced can easily be simply inserted by its first branch through a passage arranged at the level of the support for its elbow, so as to come into contact with the fixed contact, the elasticity of the second branch normally ensuring its separation from the test resistance contact as well as the recall of the push button in the inoperative position emerged from the device housing.
  • the insulating piece forming the support can advantageously receive the test resistor, for example by simply clipping the two ends of the resistor, one of the ends then being disposed in the path of the second branch to form the fixed contact cooperating with said second plugged.
  • Said insulating part may also include means, such as for example grooves, for receiving a printed circuit board.
  • the assembly thus produced with the insulating part can be provided with means enabling it to be simply fixed, immobilized or clipped onto an electrical differential protection device and inside the housing of this device. Clipping is preferred.
  • the part may for example comprise a cross-member, two lateral clipping tabs forming the branches of a U, the cross-member of which would be the base, the push-button housing preferably being arranged at the junction of a leg and the corresponding end of the cross member, the cross ends being further arranged to receive, by clipping the ends of the resistance extending parallel to the cross member.
  • the printed circuit board when the device is designed to receive it, can advantageously be inserted to extend parallel to the cross-member, between the clipping tabs and in the grooves arranged for this purpose.
  • the assembly thus formed can be clipped for example onto a differential toroid assembly itself intended to be easily mounted or clipped to the device in the housing, which makes it possible to deliver complex assemblies formed from the torus and the assembly test.
  • the device shown is a differential switch and has a housing 1, part of which is shown diagrammatically. Through a passage formed in the upper part of the housing 1 emerges the handle 2 of a usual mechanism which will not be otherwise detailed and which drives the main movable contacts of the differential switch. This mechanism is locked in the position of approaching the contacts and a click on an adequate part of the mechanism in the event of imbalance detection causes the opening of the locked mechanism which can be brought back to its closed position by action of an operator on the lever 2. In FIG. 1, the lever 2 is in the position corresponding to the closing of the main contacts of the device.
  • the test device comprises an insulating support part 3 made of plastic material consisting of a cross-member 4 at an angle having at its two ends two returns 5, 6 from which extend two clipping tabs 7, 8 in the manner of a U, the cross-member 4 also being intended to provide insulation with respect to the windings of the torus.
  • Returns 5, 6 extend towards their end opposite to that carrying the legs 7, 8, by ends 9, 10, in which are formed notches 11 in the bottom of which can come to rest, by being preferably clipped there, the end conductors 12, 13 of a calibrated test resistance 14. When the latter is thus disposed with its ends in the notches, it extends parallel to the cross-member 4 and in front of it.
  • the returns 5, 6 each have a rectilinear groove, the two grooves facing each other to allow the insertion by sliding of a printed circuit board 15.
  • the return 6 has internally a passage 16 of generally rectangular section, the two large faces which delimit this passage being however each provided with a cylindrical recess to form a guide housing 17 for a push button 18 of corresponding cylindrical shape, the cylinder formed by the push button having, in its lower half, a wide slot 19, the bottom of which forms two divergent sides joined by a radial central edge 20, the slot 19 delimiting in the cylinder two legs 21 ending in external locking edges 22.
  • the elasticity of the tabs 21 allows the push-button 18 to be put in place in its housing while the extraction of the push-button is prevented because the lugs formed by the flanges 22 penetrate under shoulders 23 widening the part guide housing 17.
  • the passage 16 is crossed by two elements integral with the walls of the return 6, namely an element 24 and a spacer 25.
  • the element 24 crosses the passage in the axis of movement of the push button 18 and forms an extreme stop for the displacement of the second branch 32 of the blade 30.
  • the element 24 has its left-hand part below the level at which the conductive end 12 of the resistor 14 is located when it is located at the bottom of its slot 11.
  • the central part of the element 24 forms a central boss 26 on either side of which are arranged passages 27 which allow the passage of the tabs 21 of the push button 18, the boss 26 serving as a stop for the second branch of the elastic blade or, in the absence thereof, of the push button 18 itself.
  • the spacer 25 has a circular section and is located at a very short distance from one of the bottoms 28 of the passage 16, determining a narrow slot 29 therein.
  • the conductive metal strip 30 is folded back to form two branches of unequal length, namely a first branch of great length 31 and a second branch of short length 32.
  • the first branch 31 is inserted through the slot 29 and goes downwards, while the second branch 32 crosses the wide slot 19 of the button- pusher 18 above the element 24 with its boss 26.
  • the branch 31 abuts elastically, by its contact end 33, against a fixed contact 34 connected to one of the main conductors of the device while the short branch 32 tends to elastically move away from the resistance end 12 which passes through the passage 16, towards the free end of the blade branch 32, to push back to the up the push button 18 in the emerged position.
  • the device detects, via its detection toroid 35, the imbalance generated by the bypass as shown in the diagram of the Figure 9 and, under the effect of known means, the mechanism starts to trip, the main contacts then being quickly brought back to the open state of contact interruption. Simultaneously, the movement of the mechanism causes the tilting of an arm 36 of the contact opening mechanism 37 which will move counterclockwise and strike the branch 31 of the blade 30 and move this branch 31 away from the contact 34 , so that the test resistor 14 is no longer in electrical connection with this contact.
  • the pre-assembled test assembly by its clip tabs 7, 8, can very easily be fixed to a differential toroid assembly, this assembly itself being ready to be mounted in the case of a differential circuit breaker or switch.

Landscapes

  • Control Of Ac Motors In General (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)
  • Elimination Of Static Electricity (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

The test unit is characterised in that it comprises an insulating base clipped onto the apparatus and carrying a conductive strip (30) having two elastic branches (31, 32), the first (31) normally in contact with a stationary contact (34) connected to the main circuit, the second (32) normally separated from a stationary contact (12) of the calibrated test resistor, the first branch (31) being laid in the path of a piece of machinery (36) and the second being able to be repelled by a push-button (18) towards the said contact (12) connected to the test resistor. <IMAGE>

Description

La présente invention a trait à un ensemble de test pour appareil électrique différentiel de protection tel qu'interrupteur différentiel ou disjoncteur différentiel ainsi qu'aux appareils qui en sont munis.The present invention relates to a test assembly for a differential electrical protection device such as a differential switch or differential circuit breaker as well as to devices which are provided with it.

Les appareils de ce genre comportent souvent des moyens de test actionnés par un bouton-poussoir et per­mettant de vérifier que le déséquilibre électrique entre les conducteurs principaux traversant l'appareil et passant à travers un tore différentiel, entraîne le déclenchement de l'appareil de protection et l'ouverture, par un mécanisme adéquat, du ou des contacts principaux.Devices of this kind often include test means actuated by a push button and making it possible to verify that the electrical imbalance between the main conductors passing through the device and passing through a differential toroid, triggers the protection device. and opening, by a suitable mechanism, the main contact or contacts.

Dans ces appareils, l'actionnement du bouton-poussoir de test provoque une dérivation partielle de l'un des conducteurs principaux, à travers une résistance, vers un autre conducteur principal, le déséquilibre ainsi réalisé, détecté par le tore différentiel, provoquant l'actionnement du mécanisme dans le sens de l'ouverture de contact.In these devices, the actuation of the test push button causes a partial diversion of one of the main conductors, through a resistor, to another main conductor, the imbalance thus produced, detected by the differential toroid, causing the actuation of the mechanism in the direction of contact opening.

Les dispositifs de test actuellement utilisés sur ces appareils présentent l'inconvénient d'être relative­ment complexes et difficiles à monter et, par conséquent, coûteux. En outre, la résistance de test est souvent mal protégée et peut être grillée dans le cas d'une anomalie de fonctionnement.The test devices currently used on these devices have the drawback of being relatively complex and difficult to assemble and, consequently, expensive. In addition, the test resistor is often poorly protected and can be burnt out in the event of a malfunction.

L'invention se propose de remédier à ces inconvénients et de fournir un ensemble de test pour appareil électrique de protection tel qu'interrupteur différentiel ou disjoncteur différentiel, qui soit particulièrement simple et bon marché.The invention proposes to remedy these drawbacks and to provide a test set for an electrical protection device such as a differential switch or a differential circuit breaker, which is particularly simple and inexpensive.

Un autre objectif de l'invention est de four­nir un tel ensemble de test qui assure une excellente pro­tection de la résistance calibrée de test.Another object of the invention is to provide such a test assembly which provides excellent protection of the calibrated test resistance.

Un autre objectif de l'invention est de per­mettre une alimentation indépendante de l'appareil par le haut ou par le bas.Another objective of the invention is to allow a power supply independent of the device from above or from below.

Un autre objectif de l'invention est de four­nir un tel ensemble qui quisse être facilement monté dans un boîtier d'appareil existant.Another object of the invention is to provide such an assembly which can be easily mounted in an existing appliance housing.

Un autre objectif de l'invention est de four­nir un tel ensemble formant une unité susceptible d'être prémontée, et montée ensuite, dans un appareil, en un emplacement particulièrement adapté.Another object of the invention is to provide such an assembly forming a unit capable of being pre-assembled, and then mounted, in an apparatus, in a particularly suitable location.

L'invention a pour objet un ensemble de test pour appareil électrique différentiel de protection , tel qu'interrupteur différentiel ou disjoncteur différentiel, du type comprenant un bouton-poussoir actionnant des moyens de contact pour mettre en dérivation partielle un conducteur principal de l'appareil vers une résistance de test calibrée, avec une lame conductrice présentant deux branches élastiques coopérant par leurs extrémités libres, avec un contact fixe relié à l'un des conducteurs du circuit princi­pal et avec un contact fixe de la résistance calibrée de test, la première branche étant disposée dans la course d'un élément de mécanisme d'ouverture de contact de l'appareil agencé pour écarter ladite première branche de son contact lors de l'ouverture des contacts principaux de l'appareil, la deuxième branche coopérant avec le bouton-poussoir agencé pour la repousser vers le contact de la résistance de test, caractérisé en ce qu'il comporte un support formé d'une pièce isolante recevant la lame et formant le logement dans lequel coulisse le bouton-poussoir, ledit support possédant des moyens lui permettant d'être simplement fixé, immobilisé ou clipé sur un appareil électrique de protection différentielle à l'intérieur de son boîtier.The subject of the invention is a test assembly for a differential electrical protection device, such as a differential switch or differential circuit breaker, of the type comprising a push button actuating contact means for partially bypassing a main conductor of the device. towards a calibrated test resistor, with a conductive strip having two elastic branches cooperating at their free ends, with a fixed contact connected to one of the conductors of the main circuit and with a fixed contact of the calibrated test resistor, the first branch being arranged in the course of a contact opening mechanism element of the apparatus arranged to move said first branch away from its contact when the main contacts of the device are opened, the second branch cooperating with the push button arranged to push it towards the contact of the test resistor, characterized in that it comprises a support formed of an insulating part receiving the blade and forming the housing in which the push-button slides, said support having means allowing it to be simply fixed, immobilized or clipped on an electrical differential protection device inside of its case.

De préférence, la lame conductrice est coudée à peu près en équerre, la première branche, de préférence la plus longue, s'étendant au voisinage de l'élément de mécanisme destiné à provoquer sa séparation d'avec son con­tact fixé, si l'appareil est en position d'ouverture, alors que la deuxième branche, de préférence la plus courte, passe sous le bouton-poussoir susceptible de se déplacer dans une direction sensiblement parallèle à celle de la première branche.Preferably, the conductive strip is bent approximately at right angles, the first branch, preferably the longest, extending in the vicinity of the mechanism element intended to cause its separation from its fixed contact, if the device is in the open position, while the second branch, preferably the shortest, passes under the push button capable of moving in a direction substantially parallel to that of the first branch.

La lame ainsi réalisée peut facilement être simplement insérée par sa première branche à travers un pas­sage disposé au niveau du support pour son coude, de façon à venir au contact du contact fixe, l'élasticité de la seconde branche assurant normalement son écartement d'avec le con­tact de résistance de test ainsi que le rappel du bouton-­poussoir en position inopérante émergée du boîtier de l'appareil.The blade thus produced can easily be simply inserted by its first branch through a passage arranged at the level of the support for its elbow, so as to come into contact with the fixed contact, the elasticity of the second branch normally ensuring its separation from the test resistance contact as well as the recall of the push button in the inoperative position emerged from the device housing.

La pièce isolante formant le support peut avantageusement recevoir la résistance de test, par exemple par simple clipage des deux extrémités de la résistance, l'une des extrémités étant alors disposée dans le trajet de la deuxième branche pour former le contact fixe coopérant avec ladite deuxième branche.The insulating piece forming the support can advantageously receive the test resistor, for example by simply clipping the two ends of the resistor, one of the ends then being disposed in the path of the second branch to form the fixed contact cooperating with said second plugged.

Ladite pièce isolante peut également com­porter des moyens, tels que par exemple des rainures, pour recevoir une carte de circuit imprimé.Said insulating part may also include means, such as for example grooves, for receiving a printed circuit board.

De façon avantageuse, l'ensemble ainsi réalisé avec la pièce isolante, peut étre muni de moyens lui permettant d'être simplement fixé, immobilisé ou clipé sur un appareil électrique de protection différentiel et à l'intérieur du boîtier de cet appareil. La fixation par cli­page est préférée.Advantageously, the assembly thus produced with the insulating part, can be provided with means enabling it to be simply fixed, immobilized or clipped onto an electrical differential protection device and inside the housing of this device. Clipping is preferred.

A cet effet, la pièce peut par exemple com­porter une traverse, deux pattes de clipage latérales for­mant les branches d'un U dont la traverse serait la base, le logement de bouton-poussoir étant disposé de préférence au niveau de la jonction d'une patte et de l'extrémité correspondante de traverse, les extrémités de traverse étant, en outre, agencées, pour recevoir, par clipage les extrémités de la résistance s'étendant parallèlement à la traverse.To this end, the part may for example comprise a cross-member, two lateral clipping tabs forming the branches of a U, the cross-member of which would be the base, the push-button housing preferably being arranged at the junction of a leg and the corresponding end of the cross member, the cross ends being further arranged to receive, by clipping the ends of the resistance extending parallel to the cross member.

La carte de circuit imprimé, lorsque le dispositif est prévu pour la recevoir, peut avantageusement être insérée pour s'étendre parallèlement à la traverse, entre les pattes de clipage et dans les rainures disposées à cet effet.The printed circuit board, when the device is designed to receive it, can advantageously be inserted to extend parallel to the cross-member, between the clipping tabs and in the grooves arranged for this purpose.

L'ensemble ainsi constitué peut être clipé par exemple sur un ensemble de tore différentiel lui-même prévu pour être facilement monté ou clipé sur l'appareil dans le boîtier, ce qui permet de livrer des ensembles com­plexes formés du tore et de l'ensemble de test.The assembly thus formed can be clipped for example onto a differential toroid assembly itself intended to be easily mounted or clipped to the device in the housing, which makes it possible to deliver complex assemblies formed from the torus and the assembly test.

D'autres avantages et caractéristiques de l'invention apparaîtront à la lecture de la description suivante, faite à titre d'exemple non limitatif et se référant au dessin annexé dans lequel :

  • la figure 1 représente une vue en coupe longitudinale à travers un appareil au niveau de l'ensemble de test,
  • la figure 2 représente une vue de dessus de l'ensemble de test monté comme sur la figure 1,
  • la figure 3 représente une vue en perspective de l'ensemble de test,
  • la figure 4 représente une autre vue en per­spective de l'ensemble de test,
  • la figure 5 représente une vue en coupe transversale de l'ensemble de test au niveau des pattes de clipage,
  • la figure 6 représente une vue en coupe transversale de l'ensemble de test au niveau du bouton-­poussoir,
  • la figure 7 représente une vue en coupe de l'ensemble de test au niveau de la résistance de test,
  • la figure 8 représente une vue en perspective de l'ensemble de test en relation avec un mécanisme de con­tacts,
  • la figure 9 représente un schéma de principe de l'ensemble de test et de l'élément de tore de détection.
Other advantages and characteristics of the invention will appear on reading the following description, given by way of nonlimiting example and referring to the appended drawing in which:
  • FIG. 1 represents a view in longitudinal section through an apparatus at the level of the test assembly,
  • FIG. 2 represents a top view of the test assembly mounted as in FIG. 1,
  • FIG. 3 represents a perspective view of the test assembly,
  • FIG. 4 represents another perspective view of the test assembly,
  • FIG. 5 represents a cross-sectional view of the test assembly at the level of the clipping tabs,
  • FIG. 6 represents a cross-sectional view of the test assembly at the level of the push button,
  • FIG. 7 represents a sectional view of the test assembly at the level of the test resistance,
  • FIG. 8 represents a perspective view of the test assembly in relation to a contact mechanism,
  • FIG. 9 represents a block diagram of the test assembly and of the detection toroid element.

L'appareil représenté est un interrupteur différentiel et possède un boîtier 1 dont une partie est représentée schématiquement. A travers un passage ménagé à la partie supérieure du boîtier 1 émerge la manette 2 d'un mécanisme usuel qui ne sera pas autrement détaillé et qui entraîne les contacts mobiles principaux de l'interrupteur différentiel. Ce mécanisme est verrouillé dans la position de rapprochement des contacts et un déclic sur une pièce adéquate du mécanisme en cas de détection de déséquilibre provoque l'ouverture du mécanisme verrouillé qui peut être ramené à sa position de fermeture par action d un opérateur sur la manette 2. Sur la figure 1, la manette 2 est dans la position correspondant à la fermeture des contacts princi­paux de l'appareil.The device shown is a differential switch and has a housing 1, part of which is shown diagrammatically. Through a passage formed in the upper part of the housing 1 emerges the handle 2 of a usual mechanism which will not be otherwise detailed and which drives the main movable contacts of the differential switch. This mechanism is locked in the position of approaching the contacts and a click on an adequate part of the mechanism in the event of imbalance detection causes the opening of the locked mechanism which can be brought back to its closed position by action of an operator on the lever 2. In FIG. 1, the lever 2 is in the position corresponding to the closing of the main contacts of the device.

Le dispositif de test comporte une pièce de support isolante 3 en matière plastique constituée d'une traverse 4 en équerre présentant à ses deux extrémités deux retours 5, 6 à partir desquels s'étendent deux pattes de clipage 7, 8 à la façon d un U, la traverse 4 étant égale­ment destinée à assurer l'isolation par rapport aux enroule­ments du tore. Les retours 5, 6 se prolongent, vers leur extrémité opposée à celle portant les pattes 7, 8, par des extrémités 9, 10, dans lesquelles sont pratiquées des encoches 11 dans le fond desquelles peuvent venir reposer, en y étant de préférence clipés, les conducteurs d'extrémité 12, 13 d'une résistance calibrée de test 14. Lorsque celle-­ci est ainsi disposée avec ses extrémités dans les encoches, elle s'étend parallèlement à la traverse 4 et devant celle-­ci. Les retours 5, 6 présentent chacun une gorge rec­tiligne, les deux gorges se faisant face pour permettre l'introduction par glissement d'une carte de circuit imprimé 15.The test device comprises an insulating support part 3 made of plastic material consisting of a cross-member 4 at an angle having at its two ends two returns 5, 6 from which extend two clipping tabs 7, 8 in the manner of a U, the cross-member 4 also being intended to provide insulation with respect to the windings of the torus. Returns 5, 6 extend towards their end opposite to that carrying the legs 7, 8, by ends 9, 10, in which are formed notches 11 in the bottom of which can come to rest, by being preferably clipped there, the end conductors 12, 13 of a calibrated test resistance 14. When the latter is thus disposed with its ends in the notches, it extends parallel to the cross-member 4 and in front of it. The returns 5, 6 each have a rectilinear groove, the two grooves facing each other to allow the insertion by sliding of a printed circuit board 15.

Le retour 6 présente intérieurement un pas­sage 16 de section générale rectangulaire, les deux grandes faces qui délimitent ce passage étant cependant munies cha­cune d'une creusure cylindrique pour former un logement de guidage 17 pour un bouton-poussoir 18 de forme cylindrique correspondante, le cylindre formé par le bouton-poussoir présentant, dans sa moitié inférieure, une large fente 19 dont le fond forme deux pans divergents réunis par une arête centrale radiale 20, la fente 19 délimitant dans le cylindre deux pattes 21 se terminant par des rebords de blocage extérieurs 22. L'élasticité des pattes 21 permet la mise en place du bouton-poussoir 18 dans son logement alors que l'extraction du bouton-poussoir est empêchée du fait que les ergots formés par les rebords 22 pénètrent sous des épaule­ments 23 élargissant la partie inférieure du logement de guidage 17.The return 6 has internally a passage 16 of generally rectangular section, the two large faces which delimit this passage being however each provided with a cylindrical recess to form a guide housing 17 for a push button 18 of corresponding cylindrical shape, the cylinder formed by the push button having, in its lower half, a wide slot 19, the bottom of which forms two divergent sides joined by a radial central edge 20, the slot 19 delimiting in the cylinder two legs 21 ending in external locking edges 22. The elasticity of the tabs 21 allows the push-button 18 to be put in place in its housing while the extraction of the push-button is prevented because the lugs formed by the flanges 22 penetrate under shoulders 23 widening the part guide housing 17.

Le passage 16 est traversé par deux éléments solidaires des parois du retour 6, à savoir un élément 24 et une entretoise 25. L'élément 24 traverse le passage dans l'axe de déplacement du bouton-poussoir 18 et forme une butée extrême pour le déplacement de la deuxième branche 32 de la lame 30. Comme on le voit sur la figure 1, l'élément 24 présente sa partie de gauche au-dessous du niveau auquel se trouve disposée l'extrémité conductrice 12 de la résistance 14 lorsqu'elle est située au fond de sa fente 11. La partie centrale de l'élément 24 forme un bossage central 26 de part et d'autre duquel sont aménagés des passages 27 qui permettent le passage des pattes 21 du bouton-poussoir 18, le bossage 26 servant de butée pour la deuxième branche de la lame élastique ou, en l'absence de celle-ci, du bouton-poussoir 18 lui-même.The passage 16 is crossed by two elements integral with the walls of the return 6, namely an element 24 and a spacer 25. The element 24 crosses the passage in the axis of movement of the push button 18 and forms an extreme stop for the displacement of the second branch 32 of the blade 30. As can be seen in FIG. 1, the element 24 has its left-hand part below the level at which the conductive end 12 of the resistor 14 is located when it is located at the bottom of its slot 11. The central part of the element 24 forms a central boss 26 on either side of which are arranged passages 27 which allow the passage of the tabs 21 of the push button 18, the boss 26 serving as a stop for the second branch of the elastic blade or, in the absence thereof, of the push button 18 itself.

L'entretoise 25 présente une section circu­laire et est située à très faible distance de l'un des fonds 28 du passage 16, y déterminant une fente étroite 29. La lame métallique conductrice 30 est repliée pour former deux branches de longueurs inégales, à savoir une première branche de grande longueur 31 et une deuxième branche de courte longueur 32. Au montage, la première branche 31 est insérée travers la fente 29 et se dirige vers le bas, alors que la deuxième branche 32 traverse la large fente 19 du bouton-poussoir 18 au-dessus de l'élément 24 avec son bossage 26. Dans cette position, compte tenu de l'angle de pliage spontané de la lame, la branche 31 vient buter élas­tiquement, par son extrémité de contact 33, contre un con­tact fixe 34 relié à l'un des conducteurs principaux de l'appareil alors que la courte branche 32 tend élastiquement à s'éloigner de l'extrémité de résistance 12 qui traverse le passage 16, vers l'extrémité libre de la branche de lame 32, pour repousser vers le haut le bouton-poussoir 18 en posi­tion émergée.The spacer 25 has a circular section and is located at a very short distance from one of the bottoms 28 of the passage 16, determining a narrow slot 29 therein. The conductive metal strip 30 is folded back to form two branches of unequal length, namely a first branch of great length 31 and a second branch of short length 32. During assembly, the first branch 31 is inserted through the slot 29 and goes downwards, while the second branch 32 crosses the wide slot 19 of the button- pusher 18 above the element 24 with its boss 26. In this position, given the spontaneous folding angle of the blade, the branch 31 abuts elastically, by its contact end 33, against a fixed contact 34 connected to one of the main conductors of the device while the short branch 32 tends to elastically move away from the resistance end 12 which passes through the passage 16, towards the free end of the blade branch 32, to push back to the up the push button 18 in the emerged position.

Si maintenant l'utilisateur appuie sur le bouton-poussoir de test 18, il repousse la branche 32 vers le bas jusqu'à ce qu'elle vienne au contact du prolongement de résistance 12, de sorte que la résistance 14 et le cir­cuit de test correspondant se trouvent électriquement reliés, par l'intermédiaire de la lame 30, au contact 34. L'appareil décèle alors, par l'intermédiaire de son tore de détection 35, le déséquilibre engendré par la dérivation telle que représentée sur le schéma de la figure 9 et, sous effet de moyens connus, le mécanisme se met à disjoncter, les contacts principaux étant alors rapidement ramenés à l'état ouvert d'interruption de contact. Simultanément, le mouvement du mécanisme provoque le basculement d'un bras 36 de mécanisme 37 d'ouverture de contacts qui va se déplacer dans le sens anti-horaire et venir percuter la branche 31 de la lame 30 et éloigner cette branche 31 du contact 34, de sorte que la résistance de test 14 n'est plus en liaison électrique avec ce contact.If the user now presses the test push-button 18, he pushes the branch 32 down until it comes into contact with the resistor extension 12, so that the resistor 14 and the test circuit corresponding are electrically connected, via the blade 30, to the contact 34. The device then detects, via its detection toroid 35, the imbalance generated by the bypass as shown in the diagram of the Figure 9 and, under the effect of known means, the mechanism starts to trip, the main contacts then being quickly brought back to the open state of contact interruption. Simultaneously, the movement of the mechanism causes the tilting of an arm 36 of the contact opening mechanism 37 which will move counterclockwise and strike the branch 31 of the blade 30 and move this branch 31 away from the contact 34 , so that the test resistor 14 is no longer in electrical connection with this contact.

On conçoit qu'on a ainsi réalisé un disposi­tif de test d'une très grande simplicité et qui ne comporte, pour sa partie propre, que le bouton-poussoir 18 et la lame coudée 30, le montage de l'ensemble étant, en outre, particulièrement aisé.It will be understood that a very simple test device has thus been produced and which, for its own part, only comprises the push button 18 and the bent blade 30, the assembly of the assembly being, moreover , particularly easy.

L'ensemble de test prémonté, par ses pattes de clipage 7, 8, peut très facilement être fixé sur un ensemble de tore différentiel, cet ensemble étant lui-même prêt à être monté dans le boîtier d'un disjoncteur ou inter­rupteur différentiel.The pre-assembled test assembly, by its clip tabs 7, 8, can very easily be fixed to a differential toroid assembly, this assembly itself being ready to be mounted in the case of a differential circuit breaker or switch.

Bien que l'invention ait été décrite à propos d'une forme de réalisation particulière, il est bien entendu qu'elle n'y est nullement limitée et qu'on peut lui apporter diverses modifications de forme ou de matériau sans pour cela s'éloigner ni de son cadre ni de son esprit.Although the invention has been described with reference to a particular embodiment, it is understood that it is in no way limited thereto and that it can be made various modifications of shape or material without thereby distance neither from his frame nor from his mind.

Claims (11)

1. Ensemble de test pour appareil électrique différentiel de protection, tel qu'interrupteur différentiel ou disjoncteur différentiel, du type comprenant un bouton-­poussoir (18) actionnant des moyens de contact pour mettre en dérivation partielle un conducteur principal de l'appareil vers une résistance de test calibrée (14), avec une lame conductrice (30) présentant deux branches élas­tiques, coopérant, par leurs extrémités libres (33, 32) avec un contact fixe (34) relié à l'un des conducteurs du circuit principal, respectivement avec un contact fixe (12) de la résistance calibrée de test (14), la première branche (31) étant disposée dans la course d'un élément (36) d'un mécanisme d'ouverture de contact de l'appareil agencé pour écarter ladite première branche de son contact lors de l'ouverture des contacts principaux de l'appareil, la deuxième branche (32) coopérant avec le bouton-poussoir (18) agencé pour la repousser vers le contact de la resistance de test, caractérisé en ce qu'il comporte un support formé d'une pièce isolante recevant la lame et formant le logement dans lequel coulisse le bouton-pousoir (18), ledit support possédant des moyens lui permettant d'être simplement fixé, immobilisé ou clipé sur un appareil électrique de protection différentielle à l'intérieur de son boîtier.1. Test assembly for a differential electrical protection device, such as a differential switch or differential circuit breaker, of the type comprising a push button (18) actuating contact means for partially bypassing a main conductor of the device to a calibrated test resistor (14), with a conductive strip (30) having two elastic branches, cooperating, by their free ends (33, 32) with a fixed contact (34) connected to one of the conductors of the main circuit, respectively with a fixed contact (12) of the calibrated test resistor (14), the first branch (31) being arranged in the course of an element (36) of a contact opening mechanism of the device arranged for move said first branch away from its contact when the main contacts of the device open, the second branch (32) cooperating with the push button (18) arranged to push it towards the contact of the test resistor, characterized in what l comprises a support formed of an insulating part receiving the blade and forming the housing in which the push button (18) slides, said support having means allowing it to be simply fixed, immobilized or clipped onto an electrical protection device differential inside its case. 2. Ensemble de test selon la revendication 1, caractérisé en ce que la lame conductrice (30) est coudée à peu près en équerre, la première branche (31) s étendant au voisinage de l'élément de mécanisme destiné à provoquer sa séparation d'avec son contact fixe, si l'appareil est en position d'ouverture, alors que la deuxième branche (32) passe sous le bouton-poussoir (18) susceptible de se déplacer dans une direction sensiblement parallèle à celle de la première branche (31).2. Test assembly according to claim 1, characterized in that the conductive strip (30) is bent approximately at an angle, the first branch (31) extending in the vicinity of the mechanism element intended to cause its separation d 'with its fixed contact, if the device is in the open position, while the second branch (32) passes under the push-button (18) capable of moving in a direction substantially parallel to that of the first branch ( 31). 3. Ensemble de test selon l'une quelconque des revendications 1 et 2, caractérisé en ce que le bouton-­poussoir est repoussé en position inopérante par l'élasticité de ladite deuxième branche (32).3. Test assembly according to any one of claims 1 and 2, characterized in that the push-button is pushed back into the inoperative position by the elasticity of said second branch (32). 4. Ensemble de test selon l'une des revendi­cations 2 et 3, caractérisé en ce que la lame (30) est insérée à travers un passage étroit disposé au niveau d'un support pour son coude de façon à venir au contact du con­tact fixe (34), l'élasticité de la seconde branche (32) assurant normalement son écartement d'avec le contact de résistance de test ainsi que le rappel du bouton-poussoir (18).4. Test assembly according to one of claims 2 and 3, characterized in that the blade (30) is inserted through a narrow passage arranged at a support for its elbow so as to come into contact with the fixed contact (34), the elasticity of the second branch (32) normally ensuring its separation from the test resistance contact as well as the return of the push button (18). 5. Ensemble de test selon l'une quelconque des revendications 1 à 4, caractérisé en ce que ledit sup­port présente des moyens (9, 10, 11) pour recevoir la résistance de test (14).5. Test assembly according to any one of claims 1 to 4, characterized in that said support has means (9, 10, 11) for receiving the test resistor (14). 6. Ensemble de test selon l'une quelconque des revendications 1 à 5, caractérisé en ce que ledit sup­port présente des gorges pour recevoir une carte de circuit imprimé.6. Test assembly according to any one of claims 1 to 5, characterized in that said support has grooves for receiving a printed circuit board. 7. Ensemble de test selon l'une quelconque des revendications 1 à 7, caractérisé en ce que lesdits moy­ens lui permettent d'être clipé sur un ensemble de tore différentiel.7. Test assembly according to any one of claims 1 to 7, characterized in that said means allow it to be clipped onto a set of differential toroids. 8. Ensemble de test selon l'une quelconque des revendications 1 à 7, caractérisé en ce que ledit sup­port comporte une traverse (4) d'où s'étendent deux retours (5, 6) portant deux pattes de fixation (7, 8), l'un des retours présentant un passage interne (16) dans lequel est déterminé un logement de guidage pour le bouton-poussoir (18).8. Test assembly according to any one of claims 1 to 7, characterized in that said support comprises a crosspiece (4) from which extend two returns (5, 6) carrying two fixing lugs (7, 8 ), one of the returns having an internal passage (16) in which a guide housing for the push button (18) is determined. 9. Ensemble de test selon la revendication 8, caractérisé en ce que ledit passage (16) présente une entre­toise (25) déterminant, avec le fond du passage (16), une fente pour le passage d'un bras de la lame (30).9. Test assembly according to claim 8, characterized in that said passage (16) has a spacer (25) determining, with the bottom of the passage (16), a slot for the passage of an arm of the blade (30 ). 10. Ensemble de test selon l'une des revendi­cations 8 et 9, caractérise en ce que ledit passage présente un élément (24) muni de passages pour des pattes (21, 22) du bouton-poussoir (18) munies à leurs extrémités de moyens d'accrochage permettant l'introduction du bouton-poussoir (18) par déformation élastique dans son logement et s'opposant à son extraction.10. Test assembly according to one of claims 8 and 9, characterized in that said passage has an element (24) provided with passages for tabs (21, 22) of the push button (18) provided at their ends with means attachment allowing the introduction of the push button (18) by elastic deformation in its housing and opposing its extraction. 11. Appareil électrique différentiel de pro­tection, caractérisé en ce qu'il comporte un ensemble de test selon l'une quelconque des revendications précédentes.11. Differential electrical protection device, characterized in that it comprises a test assembly according to any one of the preceding claims.
EP88401263A 1987-06-11 1988-05-25 Test unit for electrical differential protection apparatus and apparatus incorporating this unit Expired - Lifetime EP0295167B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88401263T ATE84376T1 (en) 1987-06-11 1988-05-25 TEST UNIT FOR ELECTRICAL DIFFERENTIAL PROTECTION APPARATUS AND APPARATUS WITH THIS UNIT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8708123A FR2616585A1 (en) 1987-06-11 1987-06-11 TEST DEVICE FOR A DIFFERENTIAL PROTECTIVE ELECTRICAL APPARATUS INCORPORATING THIS DEVICE, IN PARTICULAR FOR A DIFFERENTIAL CIRCUIT BREAKER
FR8708123 1987-06-11

Publications (2)

Publication Number Publication Date
EP0295167A1 true EP0295167A1 (en) 1988-12-14
EP0295167B1 EP0295167B1 (en) 1993-01-07

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Family Applications (1)

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EP88401263A Expired - Lifetime EP0295167B1 (en) 1987-06-11 1988-05-25 Test unit for electrical differential protection apparatus and apparatus incorporating this unit

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EP (1) EP0295167B1 (en)
AT (1) ATE84376T1 (en)
DE (2) DE3877262D1 (en)
FR (1) FR2616585A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005010905A2 (en) * 2003-07-21 2005-02-03 Legrand Differential switch provided with a test circuit
WO2005017935A1 (en) * 2003-08-19 2005-02-24 Moeller Gebäudeautomation KG Test pushbutton module
ITMI20131033A1 (en) * 2013-06-21 2014-12-22 Gewiss Spa DIFFERENTIAL SWITCH
WO2019122539A1 (en) * 2017-12-22 2019-06-27 Hager-Electro Sas Modular electrical switching device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2005605A1 (en) * 1968-04-05 1969-12-12 Siemens Ag
FR2489587A1 (en) * 1980-08-30 1982-03-05 Licentia Gmbh Leakage current breaker with test circuit - uses touch control test switch to insert resistance in test circuit
EP0200581A1 (en) * 1985-03-08 1986-11-05 Electrotecnica F. De Roda, S.A. Mechanisms of fault current protective switches which enable their coupling in or to automatic breakers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2005605A1 (en) * 1968-04-05 1969-12-12 Siemens Ag
FR2489587A1 (en) * 1980-08-30 1982-03-05 Licentia Gmbh Leakage current breaker with test circuit - uses touch control test switch to insert resistance in test circuit
EP0200581A1 (en) * 1985-03-08 1986-11-05 Electrotecnica F. De Roda, S.A. Mechanisms of fault current protective switches which enable their coupling in or to automatic breakers

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005010905A2 (en) * 2003-07-21 2005-02-03 Legrand Differential switch provided with a test circuit
WO2005010905A3 (en) * 2003-07-21 2005-03-24 Legrand Sa Differential switch provided with a test circuit
CN100470706C (en) * 2003-07-21 2009-03-18 罗格朗法国公司 Differential switch provided with a test circuit
WO2005017935A1 (en) * 2003-08-19 2005-02-24 Moeller Gebäudeautomation KG Test pushbutton module
AU2004265697B2 (en) * 2003-08-19 2009-02-26 Moeller Gebaudeautomation Gmbh Test pushbutton module
CN1836302B (en) * 2003-08-19 2011-01-26 穆勒建筑物自动化两合公司 Test pushbutton module
ITMI20131033A1 (en) * 2013-06-21 2014-12-22 Gewiss Spa DIFFERENTIAL SWITCH
EP2816583A1 (en) * 2013-06-21 2014-12-24 GEWISS S.p.A. Residual-current circuit breaker
WO2019122539A1 (en) * 2017-12-22 2019-06-27 Hager-Electro Sas Modular electrical switching device

Also Published As

Publication number Publication date
FR2616585A1 (en) 1988-12-16
DE3877262T4 (en) 1995-08-10
DE3877262D1 (en) 1993-02-18
EP0295167B1 (en) 1993-01-07
ATE84376T1 (en) 1993-01-15
DE3877262T2 (en) 1993-05-06

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