EP2815415A1 - Instantaneous trip for electrical apparatus for protecting lines, of the circuit breaker type - Google Patents

Instantaneous trip for electrical apparatus for protecting lines, of the circuit breaker type

Info

Publication number
EP2815415A1
EP2815415A1 EP13710463.4A EP13710463A EP2815415A1 EP 2815415 A1 EP2815415 A1 EP 2815415A1 EP 13710463 A EP13710463 A EP 13710463A EP 2815415 A1 EP2815415 A1 EP 2815415A1
Authority
EP
European Patent Office
Prior art keywords
pallet
electrical
contact
lock
block
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
EP13710463.4A
Other languages
German (de)
French (fr)
Other versions
EP2815415B1 (en
Inventor
Francis Deckert
Thierry LOUX
Jeremy JELSCH
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hager Electro SAS filed Critical Hager Electro SAS
Publication of EP2815415A1 publication Critical patent/EP2815415A1/en
Application granted granted Critical
Publication of EP2815415B1 publication Critical patent/EP2815415B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2472—Electromagnetic mechanisms with rotatable armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7463—Adjusting only the electromagnetic mechanism

Definitions

  • the present invention relates to the field of electrical protection devices of at least one line, circuit breaker type, and more particularly relates to triggers called "instantaneous” or “reflexes” that increase the speed of tripping of such devices, improving the effectiveness of the product in its main function of protection, and possibly the coordination / selectivity with other circuit breakers present in the same circuit, from the perspective of managing the protection of a site by conventional prioritization of circuit breakers.
  • the invention makes it possible to adjust the response time of a circuit breaker, and consequently its operating level, with respect to the tripping time of other circuit breakers in the same circuit.
  • Electrical apparatus of the circuit-breaker type on which an instantaneous trigger is installed comprise, per line, a pair of respectively fixed and movable contacts, a pair of devices connecting to said line, and a control lever of said contacts between a first position of spacing and a second contact position.
  • This lever protrudes from the housing of the device and is connected to the movable contact by a mechanical lock cooperating with a contact holder on which is mounted the movable contact.
  • Trigger means of different types, obeying possible types of incidents on a line, are also provided to actuate the lock in case of problems on the line.
  • the electrical connection between the movable contact and the connection device connected thereto passes into a magnetic circuit in the form of a plane-shaped loop having a fixed yoke and a movable pallet against means recalling the soliciting open position, said pallet actuating a trigger of the lock when it is attracted in contact with the fixed part of the loop.
  • circuit breakers may comprise conventional magnetothermic actuators, whose differently structured magnetic motors typically react to distinct current increase profiles, following problems of another type on a line.
  • the present invention is in this case focused on the design of extremely fast triggers or "reflexes", which react in fact to very large and very sudden increases in current.
  • the yoke may be substantially U-shaped, the two limbs of which are flat, pressed against a fixed support of the apparatus, oriented in a plane substantially perpendicular to the connecting devices, and extend in a direction d perpendicular to the connecting devices.
  • the magnetic circuit passing through this U-shaped yoke with flat branches thus forms a plane-like loop.
  • the base of the U may also be folded in a plane perpendicular to the legs of the U, for purposes of guiding a connection terminal connected to the movable contact and intended to be connected to a connecting device.
  • Such a U-shaped configuration is easy and inexpensive to produce, since it is produced by simply cutting sheet. In the event of a folded base, it is again very simply obtained by folding in a second step.
  • the pallet is movable in rotation along an axis parallel to the average plane of the loop, forming air gaps with the surfaces of the free ends of the yoke located parallel to said plane.
  • the pallet may for example be placed at the end of an arm extending radially from a shaft rotatably mounted relative to the housing of the apparatus and having at least one other protrusion provided to trigger the lock. when the pallet is drawn into contact with the cylinder head.
  • This shaft can for example be clipped into a fixed housing relative to the housing, making its easy mounting.
  • said shaft may also have a radial protuberance having a surface oriented at rest facing a wall of an element integral with the housing, a compression spring being then disposed between said end surface and the wall.
  • This spring therefore ensures, in the rest position, the opening of the magnetic circuit by maintaining an air gap between the pallet and the rest of the magnetic loop, namely the fixed yoke.
  • the value of this air gap and the stiffness that we choose to give the spring allow the setting of the magnetic trigger of the invention, and therefore the predetermination of the level and the response time of said trigger.
  • the operating level is therefore very easily adjustable by simply changing the spring or the position of the pallet at rest.
  • the pallet may be movable in translation and be positioned facing the edges of the free ends of the cylinder head.
  • the pallet may have an arm having an opening in which is fitted a protuberance of a rotatably mounted shaft in the housing of the apparatus, forming a hooking system echoing to the shaft the movement of the pallet , said shaft having at least one other protrusion provided to trigger the lock when the pallet is drawn in contact with the cylinder head.
  • the sliding of the pallet to close the gaps triggers a rotation of the shaft, and therefore the tilting of the lock because the trigger is actuated by the protrusion protruding from the shaft.
  • the arm of the pallet may then have a shoulder facing a surface of a member integral with the housing, a compression spring being disposed between the shoulder and said surface.
  • the instantaneous release of the invention is particularly simple to install on electrical protection devices such as circuit breakers which comprise on the one hand a breaking block comprising the fixed and movable contacts and the lock, and on the other hand a block triggering circuit comprising the tripping means, the electrical connection consisting for each line in a connection pad extending beyond the breaking block and inserted in the loop-shaped magnetic circuit integral with the tripping block.
  • electrical protection devices such as circuit breakers which comprise on the one hand a breaking block comprising the fixed and movable contacts and the lock, and on the other hand a block triggering circuit comprising the tripping means, the electrical connection consisting for each line in a connection pad extending beyond the breaking block and inserted in the loop-shaped magnetic circuit integral with the tripping block.
  • connection range by definition solid, can therefore be guided by the base of the folded U, as mentioned above.
  • connection range protrudes from the breaking block and is inserted parallel to and in contact with the folded portion of the U-bolt.
  • the pallet is then mounted movably relative to the trigger block or to a fixed mounted element relative to the latter.
  • FIG. 1 represents a perspective view of an "instantaneous" or “reflex” trigger system according to the invention
  • FIG. 2a and 2b show an enlarged magnetic loop forming the base of the invention, according to a first variant
  • FIG. 3 shows the operation in the context of a circuit breaker type protection device
  • FIG. 4 represents the second variant of magnetic loop
  • the "instantaneous" trigger is shown installed on a block (1), in this case a trigger block (1) incorporating the various actuators for triggering the mechanical lock in case of incident on a line .
  • Such a trigger block (1) is provided to cooperate with a so-called cutoff block comprising said lock, and the movable contact (s) and their contact carrier, the arc cutting chambers, etc.
  • the product is three-pole, and the number of magnetic circuit is therefore equal to three. It will be limited in the following to describe the invention related to a pole.
  • the magnetic circuit comprises a U-shaped yoke (2) whose precise shape appears in FIG. 2b, and a rotating pallet (3).
  • the yoke (2) has two flat branches consisting of two portions of a piece of sheet metal, which are pressed against a fixed support of the trigger block (1).
  • the branches of the yoke (2) are oriented vertically, and extend in a vertical direction.
  • Said pallet (3) is mounted at the end of an arm (4) itself secured to a shaft (5) which is in this case the connection with the other poles.
  • This may for example be clipped into the block (1) and it comprises other growths (6, 7) whose function will appear clearly with reference to FIG.
  • the bottom of the U-shaped yoke (2) is folded in a plane of shape perpendicular to the branches of said U, that is to say in a plane of horizontal course allowing the insertion and the guiding of a terminal ( 8) (see Figures 1 and 2a), which protrudes from the cutoff block (not shown in Figures 1 and 2) and which is housed between said folded base of the U-shaped yoke (2) and a terminal (9) secured to the block trigger (1).
  • These terminals (8) and (9) and the folded portion of the U-bolt (2) are also traversed by an orifice for the passage of a fixing / clamping means, for example a screw.
  • the shaft (5) then pivots in the trigonometrical direction, thereby causing rotation of the protuberances (6) and (7).
  • the projection (6) strikes during this pivoting a trigger system (1 1) which unlocks the mechanical lock, tilting it. This tilting causes the opening of the contacts.
  • the U-shaped yokes can be driven into stirrups (13), from below, to reach against stops (14).
  • the U-shaped yokes can be driven into stirrups (13), from below, to reach against stops (14).
  • the trigger object of the invention is extremely easy to assemble / disassemble.
  • FIGS. 4 and 5 A possible variant appears in FIGS. 4 and 5. It is for example advantageous when the electrical connection between the triggering part (1) and the cutoff part is no longer performed with a terminal type connection pad, as in the previous configuration, but permanently with a welded braid.
  • the U-bolt (2) no longer has a folded base, because this is no longer relevant because there is no solid terminal to guide and fix between and in contact with another terminal and said folded base.
  • the pallet (3 ') is subjected to a translation movement, although it is still connected via an arm (4) to a rotating shaft (5).
  • the connection between the arm (4) and the rotary shaft (5) is effected via protuberances (14) protruding from said shaft (5) and being housed in an opening (15) made at end of said arm (4), offset end via a shoulder to be able to tangent the shaft (5).
  • the shoulder in question generates a surface of shape perpendicular to the arm (4).
  • a spring of the same type as before (10) (symbolized by a double arrow) is disposed between said surface and a facing surface belonging to the triggering part (1).
  • the air gap of the magnetic circuit is defined here between the free end edges of the U-shaped yoke (2) on the one hand and the U-shaped pallet (3) on the other hand.
  • the value of this air gap plays a role, in cooperation with the stiffness of the spring (10) for the calibration of the reactions of the instantaneous trigger object of the present invention.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Electromagnets (AREA)

Abstract

Instantaneous trip for electrical apparatus for protecting lines of the circuit breaker type, comprising per line a pair of respectively fixed and moving contacts and two devices for connection to said line, a handle for controlling said contacts between a first separation position and a second contact position. This electrical apparatus is characterized in that the electrical link between the moving contact and the connection device linked thereto passes through a magnetic circuit in the form of a loop of plane shape furnished with a fixed yoke (2) and with a movable pallet (3) that can move against restoring means (10) recalling it to the open position, said pallet (3) actuating a trip (11) of the lock when it is attracted into contact with the fixed part (2) of the loop.

Description

Déclencheur instantané pour appareil électrique  Instant shutter for electrical appliance
de protection de lignes, du type disjoncteur  line protection type circuit breaker
La présente invention se rapporte au domaine des appareils électriques de protection d'au moins une ligne, du type disjoncteur, et elle a plus particulièrement trait à des déclencheurs dits « instantanés » ou « réflexes » qui augmentent la rapidité de déclenchement de tels appareils, améliorant l'efficacité du produit dans sa fonction principale de protection, et éventuellement la coordination/sélectivité avec d'autres disjoncteurs présents dans le même circuit, dans une perspective de gestion de la protection d'un site par hiérarchisation classique des disjoncteurs. The present invention relates to the field of electrical protection devices of at least one line, circuit breaker type, and more particularly relates to triggers called "instantaneous" or "reflexes" that increase the speed of tripping of such devices, improving the effectiveness of the product in its main function of protection, and possibly the coordination / selectivity with other circuit breakers present in the same circuit, from the perspective of managing the protection of a site by conventional prioritization of circuit breakers.
Dans cette seconde hypothèse, l'invention permet en effet d'ajuster le temps de réponse d'un disjoncteur, et par conséquent son niveau de fonctionnement, par rapport au temps de déclenchement d'autres disjoncteurs dans le même circuit.  In this second hypothesis, the invention makes it possible to adjust the response time of a circuit breaker, and consequently its operating level, with respect to the tripping time of other circuit breakers in the same circuit.
Les appareils électriques du type disjoncteur sur lesquels un déclencheur instantané est installé comportent, par ligne, une paire de contacts respectivement fixe et mobile, une paire de dispositifs de raccordement à ladite ligne, et une manette de commande desdits contacts entre une première position d'écartement et une seconde position de contact. Cette manette dépasse du boîtier de l'appareil et est reliée au contact mobile par une serrure mécanique coopérant avec un porte-contact sur lequel est monté le contact mobile.  Electrical apparatus of the circuit-breaker type on which an instantaneous trigger is installed comprise, per line, a pair of respectively fixed and movable contacts, a pair of devices connecting to said line, and a control lever of said contacts between a first position of spacing and a second contact position. This lever protrudes from the housing of the device and is connected to the movable contact by a mechanical lock cooperating with a contact holder on which is mounted the movable contact.
Des moyens de déclenchement de différents types, obéissant à des typologies d'incidents possibles sur une ligne, sont par ailleurs prévus pour actionner la serrure en cas de problème sur la ligne.  Trigger means of different types, obeying possible types of incidents on a line, are also provided to actuate the lock in case of problems on the line.
Selon l'invention, la liaison électrique entre le contact mobile et le dispositif de raccordement qui lui est relié passe dans un circuit magnétique en forme de boucle d'allure plane dotée d'une culasse fixe et d'une palette mobile à encontre de moyens de rappel la sollicitant en position ouverte, ladite palette actionnant un déclencheur de la serrure lorsqu'elle est attirée au contact de la partie fixe de la boucle. According to the invention, the electrical connection between the movable contact and the connection device connected thereto passes into a magnetic circuit in the form of a plane-shaped loop having a fixed yoke and a movable pallet against means recalling the soliciting open position, said pallet actuating a trigger of the lock when it is attracted in contact with the fixed part of the loop.
Dans l'hypothèse où, suite à un problème sur la ligne, le courant monte rapidement à plusieurs dizaines de fois le courant nominal IN, et selon l'entrefer et les moyens de rappel utilisés, la palette se ferme en quelques millisecondes, actionnant le déclencheur et faisant basculer la serrure mécanique, provoquant l'ouverture des contacts. Ce mécanisme, d'une grande simplicité, est au surplus très peu encombrant dans la mesure où le circuit magnétique prend la forme d'une boucle dont il est précisé qu'elle est d'allure plane.  In the event that, following a problem on the line, the current rises rapidly to several tens of times the nominal current IN, and according to the air gap and the return means used, the pallet closes in a few milliseconds, activating the trigger and tilting the mechanical lock, causing the opening of the contacts. This mechanism, a great simplicity, is in addition very compact in the extent that the magnetic circuit takes the form of a loop which is specified that it is planar pace.
Ce déclencheur dit instantané ne remplace évidemment pas les autres moyens de déclenchement attachés à un disjoncteur, même magnétique, répondant à d'autres typologies d'incidents sur les lignes. Ainsi, ces disjoncteurs peuvent comporter des actionneurs magnétothermiques classiques, dont les moteurs magnétiques structurés différemment réagissent typiquement à des profils d'augmentation du courant distincts, suite à des problèmes d'un autre type sur une ligne.  This so-called instantaneous trigger obviously does not replace the other trigger means attached to a circuit breaker, even magnetic, responding to other types of incidents on the lines. Thus, these circuit breakers may comprise conventional magnetothermic actuators, whose differently structured magnetic motors typically react to distinct current increase profiles, following problems of another type on a line.
La présente invention est en l'occurrence centrée sur la conception de déclencheurs extrêmement rapides ou « réflexes », qui réagissent en fait à des montées très importantes et très brutales de courant.  The present invention is in this case focused on the design of extremely fast triggers or "reflexes", which react in fact to very large and very sudden increases in current.
Selon une configuration possible, la culasse peut être sensiblement en forme de U dont les deux branches sont plates, plaquées contre un support fixe de l'appareil, orientées dans un plan sensiblement perpendiculaire aux dispositifs de raccordement, et s'étendent dans une direction d'allure perpendiculaire aux dispositifs de raccordement.  According to one possible configuration, the yoke may be substantially U-shaped, the two limbs of which are flat, pressed against a fixed support of the apparatus, oriented in a plane substantially perpendicular to the connecting devices, and extend in a direction d perpendicular to the connecting devices.
Le circuit magnétique passant dans cette culasse en U aux branches plates forme donc une boucle d'allure plane. La base du U peut d'ailleurs être repliée dans un plan d'allure perpendiculaire aux branches du U, à des fins de guidage d'une borne de raccordement reliée au contact mobile et destinée à être connectée à un dispositif de raccordement. Une telle configuration en U est facile et peu coûteuse à produire, puisqu'elle est produite par simple découpage de tôle. Dans l'hypothèse d'une base repliée, celle-ci est à nouveau très simplement obtenue par pliage en une seconde étape. The magnetic circuit passing through this U-shaped yoke with flat branches thus forms a plane-like loop. The base of the U may also be folded in a plane perpendicular to the legs of the U, for purposes of guiding a connection terminal connected to the movable contact and intended to be connected to a connecting device. Such a U-shaped configuration is easy and inexpensive to produce, since it is produced by simply cutting sheet. In the event of a folded base, it is again very simply obtained by folding in a second step.
Selon une variante possible, la palette est mobile en rotation selon un axe d'allure parallèle au plan moyen de la boucle, formant des entrefers avec les surfaces des extrémités libres de la culasse situées parallèlement audit plan.  According to a possible variant, the pallet is movable in rotation along an axis parallel to the average plane of the loop, forming air gaps with the surfaces of the free ends of the yoke located parallel to said plane.
Ainsi, la palette peut par exemple être placée à l'extrémité d'un bras s'étendant radialement à partir d'un arbre monté rotatif par rapport au boîtier de l'appareil et comportant au moins une autre excroissance prévue pour faire déclencher la serrure lorsque la palette est attirée au contact de la culasse.  Thus, the pallet may for example be placed at the end of an arm extending radially from a shaft rotatably mounted relative to the housing of the apparatus and having at least one other protrusion provided to trigger the lock. when the pallet is drawn into contact with the cylinder head.
Cet arbre peut par exemple être clipsé dans un logement fixe par rapport au boîtier, rendant son montage facile. Selon une possibilité, ledit arbre peut par ailleurs présenter une excroissance radiale présentant une surface orientée au repos face à une paroi d'un élément solidaire du boîtier, un ressort de compression étant alors disposé entre ladite surface d'extrémité et la paroi.  This shaft can for example be clipped into a fixed housing relative to the housing, making its easy mounting. According to one possibility, said shaft may also have a radial protuberance having a surface oriented at rest facing a wall of an element integral with the housing, a compression spring being then disposed between said end surface and the wall.
Ce ressort assure donc, en position de repos, l'ouverture du circuit magnétique en maintenant un entrefer entre la palette et le reste de la boucle magnétique, à savoir la culasse fixe. La valeur de cet entrefer ainsi que la raideur que l'on choisit de donner au ressort permettent le tarage du déclencheur magnétique de l'invention, et par conséquent la prédétermination du niveau et du temps de réponse dudit déclencheur. Le niveau de fonctionnement est dès lors ajustable très facilement par simple changement du ressort ou de la position de la palette au repos.  This spring therefore ensures, in the rest position, the opening of the magnetic circuit by maintaining an air gap between the pallet and the rest of the magnetic loop, namely the fixed yoke. The value of this air gap and the stiffness that we choose to give the spring allow the setting of the magnetic trigger of the invention, and therefore the predetermination of the level and the response time of said trigger. The operating level is therefore very easily adjustable by simply changing the spring or the position of the pallet at rest.
Selon une seconde variante, la palette peut être mobile en translation et être positionnée en regard des chants des extrémités libres de la culasse. Dans ce cas, la palette peut présenter un bras comportant une ouverture dans laquelle s'ajuste une protubérance d'un arbre monté rotatif dans le boîtier de l'appareil, formant un système d'accrochage répercutant à l'arbre le mouvement de la palette, ledit arbre comportant au moins une autre excroissance prévue pour faire déclencher la serrure lorsque la palette est attirée au contact de la culasse. According to a second variant, the pallet may be movable in translation and be positioned facing the edges of the free ends of the cylinder head. In this case, the pallet may have an arm having an opening in which is fitted a protuberance of a rotatably mounted shaft in the housing of the apparatus, forming a hooking system echoing to the shaft the movement of the pallet , said shaft having at least one other protrusion provided to trigger the lock when the pallet is drawn in contact with the cylinder head.
Dans cette configuration, le coulissement de la palette en vue de fermer les entrefers déclenche une rotation de l'arbre, et par conséquent le basculement de la serrure car le déclencheur est actionné par l'excroissance dépassant de l'arbre.  In this configuration, the sliding of the pallet to close the gaps triggers a rotation of the shaft, and therefore the tilting of the lock because the trigger is actuated by the protrusion protruding from the shaft.
Selon une possibilité, le bras de la palette peut alors présenter un épaulement faisant face à une surface d'un élément solidaire du boîtier, un ressort de compression étant disposé entre l'épaulement et ladite surface.  According to one possibility, the arm of the pallet may then have a shoulder facing a surface of a member integral with the housing, a compression spring being disposed between the shoulder and said surface.
Le tarage se fait de la même manière que dans la variante précédente, la simplicité d'ajustement étant conservée.  The calibration is done in the same way as in the previous variant, the simplicity of adjustment being retained.
Le déclencheur instantané de l'invention est particulièrement simple à installer sur des appareils électriques de protection tels que des disjoncteurs qui comportent d'une part un bloc de coupure comprenant les contacts fixe et mobile ainsi que la serrure, et d'autre part un bloc de déclenchement comportant les moyens de déclenchement, la liaison électrique consistant pour chaque ligne en une plage de raccordement dépassant du bloc de coupure et s'insérant dans le circuit magnétique en forme de boucle solidaire du bloc de déclenchement.  The instantaneous release of the invention is particularly simple to install on electrical protection devices such as circuit breakers which comprise on the one hand a breaking block comprising the fixed and movable contacts and the lock, and on the other hand a block triggering circuit comprising the tripping means, the electrical connection consisting for each line in a connection pad extending beyond the breaking block and inserted in the loop-shaped magnetic circuit integral with the tripping block.
La petite plage de raccordement, par définition solide, peut dès lors être guidée par la base du U replié, tel que mentionné précédemment. Dans ce cas, la plage de raccordement dépasse du bloc de coupure et s'insère parallèlement à et au contact de la portion repliée de la culasse en U. Toujours dans cette hypothèse, la palette est alors montée mobile par rapport au bloc déclencheur ou à un élément monté fixe par rapport à ce dernier. The small connection range, by definition solid, can therefore be guided by the base of the folded U, as mentioned above. In this case, the connection range protrudes from the breaking block and is inserted parallel to and in contact with the folded portion of the U-bolt. Still in this case, the pallet is then mounted movably relative to the trigger block or to a fixed mounted element relative to the latter.
La simplicité du montage du déclencheur instantané a également comme corollaire le fait qu'il peut être simplement omis, c'est-à-dire non monté, sur des produits dont les performances attendues sont moins élevées.  The simplicity of mounting the instantaneous shutter also has the corollary that it can be simply omitted, that is to say, not mounted, on products whose expected performance is lower.
L'invention va à présent être décrite plus en détail, en référence aux figures annexées, pour lesquelles :  The invention will now be described in more detail, with reference to the appended figures, for which:
- la figure 1 représente une vue en perspective d'un système de déclenchement « instantané » ou « réflexe » selon l'invention ; FIG. 1 represents a perspective view of an "instantaneous" or "reflex" trigger system according to the invention;
- les figures 2a et 2b représentent de manière agrandie la boucle magnétique formant la base de l'invention, selon une première variante ; - Figures 2a and 2b show an enlarged magnetic loop forming the base of the invention, according to a first variant;
- la figure 3 en montre le fonctionnement dans le contexte d'un appareil de protection de ligne de type disjoncteur ;  - Figure 3 shows the operation in the context of a circuit breaker type protection device;
- la figure 4 représente la seconde variante de boucle magnétique ; et  FIG. 4 represents the second variant of magnetic loop; and
- la figure 5 illustre la relation mécanique existant entre la palette mobile et l'arbre pivotant dans cette seconde variante.  - Figure 5 illustrates the mechanical relationship between the mobile pallet and the pivoting shaft in this second variant.
En référence à la figure 1 , le déclencheur « instantané » est représenté installé sur un bloc (1 ), en l'occurrence un bloc déclencheur (1 ) intégrant les différents actionneurs permettant de déclencher la serrure mécanique en cas d'incident sur une ligne.  Referring to Figure 1, the "instantaneous" trigger is shown installed on a block (1), in this case a trigger block (1) incorporating the various actuators for triggering the mechanical lock in case of incident on a line .
Un tel bloc déclencheur (1 ) est prévu pour coopérer avec un bloc dit de coupure comportant ladite serrure, ainsi que le ou les contacts mobiles et leur porte-contact, les chambres de coupure d'arc, etc. Dans la configuration représentée, le produit est tripolaire, et le nombre de circuit magnétique est par conséquent égal à trois. On se contentera dans la suite de décrire l'invention rapportée à un pôle. Le circuit magnétique comporte une culasse en U (2) dont la forme précise apparaît en figure 2b, et une palette mobile en rotation (3). La culasse (2) comporte deux branches plates consistant en deux portions d'un morceau de tôle, qui sont plaquées contre un support fixe du bloc déclencheur (1 ). Such a trigger block (1) is provided to cooperate with a so-called cutoff block comprising said lock, and the movable contact (s) and their contact carrier, the arc cutting chambers, etc. In the configuration shown, the product is three-pole, and the number of magnetic circuit is therefore equal to three. It will be limited in the following to describe the invention related to a pole. The magnetic circuit comprises a U-shaped yoke (2) whose precise shape appears in FIG. 2b, and a rotating pallet (3). The yoke (2) has two flat branches consisting of two portions of a piece of sheet metal, which are pressed against a fixed support of the trigger block (1).
Sur toutes les figures, les branches de la culasse (2) sont orientées verticalement, et s'étendent dans une direction verticale. Ladite palette (3) est montée à l'extrémité d'un bras (4) lui-même solidarisé à un arbre (5) qui fait en l'occurrence la liaison avec les autres pôles.  In all figures, the branches of the yoke (2) are oriented vertically, and extend in a vertical direction. Said pallet (3) is mounted at the end of an arm (4) itself secured to a shaft (5) which is in this case the connection with the other poles.
Celui-ci peut par exemple être clipsé dans le bloc (1 ) et il comporte d'autres excroissances (6, 7) dont la fonction apparaîtra clairement en référence à la figure 3.  This may for example be clipped into the block (1) and it comprises other growths (6, 7) whose function will appear clearly with reference to FIG.
Le bas de la culasse en U (2) est replié dans un plan d'allure perpendiculaire aux branches dudit U, c'est-à-dire dans un plan d'allure horizontale permettant l'insertion et le guidage d'une borne (8) (voir figures 1 et 2a), qui dépasse du bloc de coupure (non représenté aux figures 1 et 2) et qui se loge entre ladite base repliée de la culasse en U (2) et une borne (9) solidaire du bloc de déclenchement (1 ). Ces bornes (8) et (9) ainsi que la partie repliée de la culasse en U (2) sont par ailleurs traversées par un orifice permettant le passage d'un moyen de fixation / serrage, par exemple une vis.  The bottom of the U-shaped yoke (2) is folded in a plane of shape perpendicular to the branches of said U, that is to say in a plane of horizontal course allowing the insertion and the guiding of a terminal ( 8) (see Figures 1 and 2a), which protrudes from the cutoff block (not shown in Figures 1 and 2) and which is housed between said folded base of the U-shaped yoke (2) and a terminal (9) secured to the block trigger (1). These terminals (8) and (9) and the folded portion of the U-bolt (2) are also traversed by an orifice for the passage of a fixing / clamping means, for example a screw.
Ce dernier moyen, qui assure une bonne conductivité entre les bornes (8) et (9), joue au surplus un rôle dans la fixation du bloc (1 ) au bloc de coupure (non représenté aux figures 1 et 2).  This latter means, which ensures good conductivity between the terminals (8) and (9), plays a role in the fixing of the block (1) to the breaking block (not shown in Figures 1 and 2).
En cas de problème sur la ligne, qui se traduit par une brusque montée de l'intensité du courant dans les bornes (8) et (9), le champ magnétique résultant dans le circuit magnétique constitué de la culasse (2) et de la palette (3) aboutit à attirer ladite palette (3) au contact de la culasse en U (2).  In case of a problem on the line, which results in a sudden rise in the intensity of the current in the terminals (8) and (9), the resulting magnetic field in the magnetic circuit constituted by the cylinder head (2) and the pallet (3) attracts said pallet (3) in contact with the U-shaped yoke (2).
L'arbre (5) pivote alors dans le sens trigonométrique, entraînant par conséquent une rotation des excroissances (6) et (7). Ce pivotement se fait à encontre d'un ressort symbolisé par la double flèche (10), en l'espèce un ressort de compression fixé entre l'excroissance (7) et une surface (12) en regard appartenant au bloc déclencheur (1 ) (voir en figure 3). The shaft (5) then pivots in the trigonometrical direction, thereby causing rotation of the protuberances (6) and (7). This pivoting against a spring symbolized by the double arrow (10), in this case a compression spring fixed between the projection (7) and a facing surface (12) belonging to the trigger block (1) (see FIG. Figure 3).
L'excroissance (6) heurte au cours de ce pivotement un système déclencheur (1 1 ) qui déverrouille la serrure mécanique, la faisant basculer. Ce basculement provoque l'ouverture des contacts.  The projection (6) strikes during this pivoting a trigger system (1 1) which unlocks the mechanical lock, tilting it. This tilting causes the opening of the contacts.
On a noté auparavant la facilité d'installation des palettes (3) solidarisées via les bras (4) à un arbre tournant (5), lequel peut être simplement clipsé dans des profils adéquats du bloc déclencheur (1 ).  It has previously been noted the ease of installation of the pallets (3) secured via the arms (4) to a rotating shaft (5), which can simply be clipped into appropriate profiles of the trigger block (1).
De même, les culasses en U peuvent être enfoncées dans des étriers (13), par en bas, jusqu'à arriver contre des butées (14). Dans l'hypothèse d'un produit bas de gamme, ne comportant pas de tels déclencheurs instantanés, il suffit de ne pas les monter, voire de les démonter en déclipsant l'arbre (5) et, le cas échéant, de faire coulisser dans l'autre sens les culasses en U (2). Le déclencheur objet de l'invention est donc extrêmement facile à monter / démonter.  Similarly, the U-shaped yokes can be driven into stirrups (13), from below, to reach against stops (14). In the case of a low-end product, not including such instantaneous triggers, simply do not mount or disassemble by unclipping the shaft (5) and, if necessary, slide in the other way the U-shaped yokes (2). The trigger object of the invention is extremely easy to assemble / disassemble.
Une variante possible apparaît en figures 4 et 5. Elle est par exemple avantageuse lorsque la liaison électrique entre la partie déclencheur (1 ) et la partie coupure s'effectue non plus avec une plage de raccordement de type borne, comme dans la configuration précédente, mais de manière permanente avec une tresse soudée.  A possible variant appears in FIGS. 4 and 5. It is for example advantageous when the electrical connection between the triggering part (1) and the cutoff part is no longer performed with a terminal type connection pad, as in the previous configuration, but permanently with a welded braid.
Dans ce cas, la culasse en U (2) ne présente plus de base repliée, car cela n'a plus d'objet étant donné l'absence d'une borne solide à guider et à fixer entre et au contact d'une autre borne et de ladite base repliée. Dans ce cas également, la palette (3') est soumise à un mouvement de translation, bien qu'elle soit toujours reliée via un bras (4) à un arbre tournant (5). Le fonctionnement de cet arbre tournant (5), notamment pour ce qui concerne le déclenchement proprement dit, reste cependant le même. En revanche, dans ce cas, la liaison entre le bras (4) et l'arbre rotatif (5) s'effectue via des protubérances (14) dépassant dudit arbre (5) et se logeant dans une ouverture (15) pratiquée à l'extrémité dudit bras (4), extrémité décalée via un épaulement pour pouvoir tangenter l'arbre (5). In this case, the U-bolt (2) no longer has a folded base, because this is no longer relevant because there is no solid terminal to guide and fix between and in contact with another terminal and said folded base. In this case also, the pallet (3 ') is subjected to a translation movement, although it is still connected via an arm (4) to a rotating shaft (5). The operation of this rotating shaft (5), especially with regard to the trigger itself, remains however the same. On the other hand, in this case, the connection between the arm (4) and the rotary shaft (5) is effected via protuberances (14) protruding from said shaft (5) and being housed in an opening (15) made at end of said arm (4), offset end via a shoulder to be able to tangent the shaft (5).
L'épaulement en question génère une surface d'allure perpendiculaire au bras (4). Un ressort du même type que précédemment (10) (symbolisé par une double flèche) est disposé entre ladite surface et une surface en regard appartenant à la partie déclencheur (1 ).  The shoulder in question generates a surface of shape perpendicular to the arm (4). A spring of the same type as before (10) (symbolized by a double arrow) is disposed between said surface and a facing surface belonging to the triggering part (1).
Contrairement à la solution précédente, l'entrefer du circuit magnétique est ici défini entre les chants d'extrémité libre de la culasse en U (2) d'une part et de la palette en U (3) d'autre part. La valeur de cet entrefer, comme la valeur de l'entrefer dans la solution précédente, joue un rôle, en coopération avec la raideur du ressort (10) pour le tarage des réactions du déclencheur instantané faisant l'objet de la présente invention.  Unlike the previous solution, the air gap of the magnetic circuit is defined here between the free end edges of the U-shaped yoke (2) on the one hand and the U-shaped pallet (3) on the other hand. The value of this air gap, as the value of the air gap in the previous solution, plays a role, in cooperation with the stiffness of the spring (10) for the calibration of the reactions of the instantaneous trigger object of the present invention.
Dans les figures ci-dessus, la solution est montrée pour des produits multipolaires, un seul arbre rotatif portant alors plusieurs palettes (3) rotatives ou coopérant avec plusieurs palettes (3') translatives. Elle est cependant, le cas échéant, parfaitement applicable à des produits unipolaires.  In the figures above, the solution is shown for multipolar products, a single rotary shaft then carrying several pallets (3) rotating or cooperating with several pallets (3 ') translational. However, it is, where appropriate, perfectly applicable to unipolar products.

Claims

REVENDICATIONS
Appareil électrique de protection d'au moins une ligne du type disjoncteur, comportant par ligne une paire de contacts respectivement fixe et mobile et deux dispositifs de raccordement à ladite ligne, une manette de commande desdits contacts entre une première position d'écartement et une seconde position de contact, ladite manette dépassant du boîtier de l'appareil et étant reliée au contact mobile par l'intermédiaire d'une serrure mécanique coopérant avec un porte-contact sur lequel est monté le contact mobile, des moyens de déclenchement étant prévus pour actionner la serrure en cas de problème sur la ligne, Electrical protection device for at least one line of the circuit-breaker type, comprising, by line, a pair of respectively fixed and movable contacts and two devices for connection to said line, a control lever for said contacts between a first position of separation and a second contact position, said handle protruding from the housing of the apparatus and being connected to the movable contact via a mechanical lock cooperating with a contact holder on which is mounted the movable contact, triggering means being provided to actuate the lock in case of problem on the line,
caractérisé en ce que la liaison électrique entre le contact mobile et le dispositif de raccordement qui lui est relié passe dans un circuit magnétique en forme de boucle d'allure plane dotée d'une culasse (2) fixe et d'une palette mobile (3) à encontre de moyens de rappel (10) la sollicitant en position ouverte, ladite palette (3) actionnant un déclencheur (1 1 ) de la serrure lorsqu'elle est attirée au contact de la partie fixe (2) de la boucle. characterized in that the electrical connection between the movable contact and the connecting device connected thereto passes into a magnetic circuit in the form of a plane-shaped loop having a fixed yoke (2) and a movable pallet (3). ) against biasing means (10) urging in the open position, said pallet (3) actuating a trigger (1 1) of the lock when it is attracted in contact with the fixed part (2) of the loop.
Appareil électrique de protection selon la revendication précédente, caractérisé en ce que la culasse (2) est sensiblement en forme de U.  Electrical protective device according to the preceding claim, characterized in that the yoke (2) is substantially U-shaped.
Appareil électrique de protection selon la revendication précédente, caractérisé en ce que la base du U est repliée dans un plan d'allure perpendiculaire aux branches du U.  Electrical protective device according to the preceding claim, characterized in that the base of the U is folded in a plane of shape perpendicular to the branches of the U.
Appareil électrique de protection selon l'une des revendications précédentes, caractérisé en ce que la palette (3) est mobile en rotation selon un axe d'allure parallèle au plan moyen de la boucle, formant des entrefers avec les surfaces des extrémités libres de la culasse (2) situées parallèlement audit plan. Electrical protective device according to one of the preceding claims, characterized in that the pallet (3) is rotatable along an axis parallel to the mean plane of the loop, forming air gaps with the surfaces of the free ends of the cylinder head (2) located parallel to said plane.
5. Appareil électrique de protection selon la revendication précédente, caractérisé en ce que la palette (3) est placée à l'extrémité d'un bras (4) s'étendant radialement à partir d'un arbre (5) monté rotatif par rapport au boîtier de l'appareil et comportant au moins une autre excroissance (7) prévue pour faire déclencher la serrure lorsque la palette (3) est attirée au contact de la culasse (2). 5. Electrical protective device according to the preceding claim, characterized in that the pallet (3) is placed at the end of an arm (4) extending radially from a shaft (5) rotatably mounted relative to to the housing of the apparatus and comprising at least one other protrusion (7) provided for triggering the lock when the pallet (3) is drawn in contact with the cylinder head (2).
6. Appareil électrique de protection selon l'une des revendications 4 et 5, caractérisé en ce que l'arbre (5) présente une excroissance (7) radiale présentant une surface orientée au repos face à une paroi (12) d'un élément solidaire du boîtier, un ressort de compression 6. Electrical protection device according to one of claims 4 and 5, characterized in that the shaft (5) has a projection (7) radial having a surface oriented at rest facing a wall (12) of an element secured to the housing, a compression spring
(10) étant disposé entre ladite surface (12) d'extrémité et la paroi.(10) being disposed between said end surface (12) and the wall.
7. Appareil électrique de protection selon l'une des revendications 1 et 2, caractérisé en ce que la palette (3) est mobile en translation et positionnée en regard des chants d'extrémités libres de la culasse (2). 7. Electrical protection device according to one of claims 1 and 2, characterized in that the pallet (3) is movable in translation and positioned opposite the edges of the free ends of the yoke (2).
8. Appareil électrique de protection selon la revendication précédente, caractérisé en ce que la palette (3) présente un bras (4) comportant une ouverture (15) dans laquelle s'ajuste une protubérance (14) d'un arbre (5) monté rotatif dans le boîtier de l'appareil, formant un système d'accrochage répercutant à l'arbre le mouvement de la palette (3), ledit arbre (5) comportant au moins une autre excroissance prévue pour faire déclencher la serrure lorsque la palette (3) est attirée au contact de la culasse (2).  8. Electrical protection device according to the preceding claim, characterized in that the pallet (3) has an arm (4) having an opening (15) in which is fitted a protuberance (14) of a shaft (5) mounted rotary device in the housing of the apparatus, forming a hooking system that transmits to the shaft the movement of the pallet (3), said shaft (5) including at least one other protrusion intended to trigger the lock when the pallet ( 3) is drawn into contact with the cylinder head (2).
9. Appareil électrique de protection selon la revendication précédente, caractérisé en ce que le bras (4) présente un épaulement faisant face à une surface d'un élément solidaire du boîtier, un ressort de compression (10) étant disposé entre l'épaulement et ladite surface. 9. Electrical protective device according to the preceding claim, characterized in that the arm (4) has a shoulder facing a surface of a member integral with the housing, a compression spring (10) being disposed between the shoulder and said surface.
10. Appareil électrique de protection selon l'une des revendications précédentes, caractérisé en ce qu'il comporte d'une part un bloc de coupure comprenant les contacts fixe et mobile ainsi que la serrure, et d'autre part un bloc de déclenchement (1 ) comportant les moyens de déclenchement, la liaison électrique consistant pour chaque ligne en une plage de raccordement (8) dépassant du bloc de coupure et s'insérant dans le circuit magnétique en forme de boucle solidaire du bloc (1 ) de déclenchement. 10. Electrical protection device according to one of the preceding claims, characterized in that it comprises firstly a breaking block comprising the fixed and movable contacts and the lock, and secondly a trigger block ( 1) with the tripping means, the electrical connection consisting for each line in a connection pad (8) protruding from the breaking block and inserted in the loop-shaped magnetic circuit integral with the tripping block (1).
1 1 . Appareil électrique de protection selon l'une des revendications 3 à 9, caractérisé en ce qu'il comporte d'une part un bloc de coupure comportant les contacts fixe et mobile ainsi que la serrure, et d'autre part un bloc de déclenchement (1 ) comportant les moyens de déclenchement, la liaison électrique consistant en une plage de raccordement (8) dépassant du bloc de coupure et s'insérant parallèlement à et au contact de la portion repliée de la culasse en U (2).  1 1. Electrical protection device according to one of Claims 3 to 9, characterized in that it comprises on the one hand a breaking block comprising the fixed and movable contacts as well as the lock, and on the other hand a tripping block ( 1) comprising the tripping means, the electrical connection consisting of a connection pad (8) protruding from the breaking block and inserted parallel to and in contact with the folded portion of the U-shaped yoke (2).
12. Appareil électrique de protection selon l'une des revendications 10 et 1 1 , caractérisé en ce que la palette (3) est montée mobile par rapport au bloc déclencheur (1 ) ou à un élément monté mobile par rapport à ce dernier.  12. Electrical protection device according to one of claims 10 and 1 1, characterized in that the pallet (3) is movably mounted relative to the trigger block (1) or to a movably mounted element relative thereto.
EP13710463.4A 2012-02-17 2013-02-15 Instantaneous trip for electrical apparatus for protecting lines, of the circuit breaker type Active EP2815415B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1251498A FR2987164B1 (en) 2012-02-17 2012-02-17 INSTANTANEOUS TRIGGER FOR ELECTRICAL DEVICE FOR PROTECTING LINES OF THE CIRCUIT BREAKER TYPE.
PCT/FR2013/050314 WO2013121156A1 (en) 2012-02-17 2013-02-15 Instantaneous trip for electrical apparatus for protecting lines, of the circuit breaker type

Publications (2)

Publication Number Publication Date
EP2815415A1 true EP2815415A1 (en) 2014-12-24
EP2815415B1 EP2815415B1 (en) 2019-05-01

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EP13710463.4A Active EP2815415B1 (en) 2012-02-17 2013-02-15 Instantaneous trip for electrical apparatus for protecting lines, of the circuit breaker type

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EP (1) EP2815415B1 (en)
JP (1) JP6219854B2 (en)
FR (1) FR2987164B1 (en)
WO (1) WO2013121156A1 (en)

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Publication number Priority date Publication date Assignee Title
FR3052909B1 (en) 2016-06-17 2018-07-13 Hager-Electro Sas CIRCUIT BREAKER TYPE PROTECTION APPARATUS COMPRISING A CALIBRATION SPRING ADJUSTMENT ROD

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Publication number Priority date Publication date Assignee Title
JPS55158147U (en) * 1979-04-27 1980-11-13
JPH1125840A (en) * 1997-06-30 1999-01-29 Toshiba Fa Syst Eng Kk Circuit breaker
DE20214922U1 (en) * 2002-09-27 2002-11-28 Moeller GmbH, 53115 Bonn Circuit breakers with short-circuit fast release
US6788174B1 (en) * 2004-02-03 2004-09-07 Eaton Corporation Adjustable magnetic trip unit and a circuit breaker incorporating the same
AT509280A1 (en) * 2008-03-05 2011-07-15 Moeller Gebaeudeautomation Gmbh SWITCHGEAR
FR2943455B1 (en) * 2009-03-23 2011-05-06 Hager Electro Sas MAGNETOTHERMIC TRIGGER

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Title
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JP2015507343A (en) 2015-03-05
WO2013121156A1 (en) 2013-08-22
EP2815415B1 (en) 2019-05-01
JP6219854B2 (en) 2017-10-25
FR2987164B1 (en) 2014-03-28
FR2987164A1 (en) 2013-08-23

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