EP1296342B1 - A fuse-disconnecting switch having a fuse holder and a control element for a security circuit - Google Patents

A fuse-disconnecting switch having a fuse holder and a control element for a security circuit Download PDF

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Publication number
EP1296342B1
EP1296342B1 EP02356177A EP02356177A EP1296342B1 EP 1296342 B1 EP1296342 B1 EP 1296342B1 EP 02356177 A EP02356177 A EP 02356177A EP 02356177 A EP02356177 A EP 02356177A EP 1296342 B1 EP1296342 B1 EP 1296342B1
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EP
European Patent Office
Prior art keywords
fuse
lever
fuse holder
disconnecting switch
extension
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.)
Expired - Lifetime
Application number
EP02356177A
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German (de)
French (fr)
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EP1296342A1 (en
Inventor
Olivier Soumillon
Alain Morel
Dominique Fiorini
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Ferraz Shawmut SAS
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Ferraz Shawmut SAS
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Publication date
Application filed by Ferraz Shawmut SAS filed Critical Ferraz Shawmut SAS
Priority to SI200230633T priority Critical patent/SI1296342T1/en
Publication of EP1296342A1 publication Critical patent/EP1296342A1/en
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Publication of EP1296342B1 publication Critical patent/EP1296342B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10—Adaptation for built-in fuses
    • H01H9/104—Adaptation for built-in fuses with interlocking mechanism between switch and fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
    • H01H85/303—Movable indicating elements
    • H01H85/306—Movable indicating elements acting on an auxiliary switch or contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
    • H01H85/545—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers with pivoting fuse carrier

Definitions

  • the invention relates to a fuse disconnect.
  • a fuse housed in a movable fuse holder relative to the body of a disconnector the fuse can cooperate with jaws connected to conductors upstream and downstream. It is also known to equip such a disconnector with an auxiliary control element, such as a switch, to limit the risk of handling under load of such a disconnector. Indeed, in the case of a disconnector that can be integrated into a supply line of a load at 800 volts and 150 amperes, the fuse holder should not be manipulated when such a difference in potential and such intensity are applied across the disconnector, otherwise a danger of creating a high energy arc is present. It is therefore necessary for a person working on a power line equipped with such a disconnector to isolate the line before handling the fuse holder.
  • Such a switch should allow, among other things, to detect the imminence of the fuse extraction of the jaws with which it cooperates, that is to say the beginning of the fuse release movement.
  • the function stated above must be effective early enough to prevent the fuse from being extracted from the jaws while still energized. This is why the IEC 60947-1 standard provides for a minimum time interval of 20 milliseconds between the actuation of an auxiliary switch and the effective extraction of the fuse from its jaws, in order to take into account the time transmission of information, from the auxiliary element to the circuit breaker or contactor, and the response time of this circuit breaker or contactor.
  • a lever is moved by the fuse when moving the fuse holder in a fuse extraction direction, in order to control an auxiliary switch.
  • the document FR-A-2462017 discloses a fuse disconnect according to the preamble of claim 1. This system is not entirely satisfactory in that, if the fuse holder is maneuvered quickly, the auxiliary control element is controlled by the lever about 4 milliseconds before the effective extraction of the fuse with respect to its jaws, which is insufficient under the above-mentioned standard.
  • the invention intends to respond more particularly by providing a disconnector whose safety is greatly improved over known devices, while it remains easy to maneuver, reliable, and acceptable cost.
  • the invention relates to a fuse switch comprising a body, a fuse holder movable relative to the body and extending by a front-end gripper, a movable lever, depending on the presence and / or the state of a fuse in the fuse holder and / or the position of the fuse holder, and a pre-cutoff control element of an electrical installation.
  • This isolator is characterized in that the lever is provided with at least one extension disposed on the trajectory of a part of the fuse holder when it is moved from a first position, or closed position, in which the fuse is connected to jaws of the disconnector, to a second position, or open position, in which the fuse can be removed from the fuse holder, the lever being movable by interaction between the aforementioned extension and the fuse holder which passes from the first to the second position, so that the lever actuates the pre-cut control element .
  • the movement of the fuse holder is detected as soon as it is initialized, which makes it possible to anticipate the movement of the fuse with respect to the jaws and to lengthen the time interval between the triggering of the control element. pre-cutting and effective extraction of the fuse with respect to the jaws.
  • the manufacturing tolerances of the plastic elements and the metal jaws are such that it can not be guaranteed that the fuse and the lever will actually interact until the fuseholder has pivoted about 10 ° while, thanks to the invention, the pre-cutting control element is actuated safely as soon as the gripper of the fuse holder has rotated 3 to 4 °.
  • the disconnector 1 shown in the figures comprises a body 2 intended to be mounted on a rail 3, for example by snapping.
  • the body 2 defines a receiving volume of a fuse holder 4 intended to receive a fuse 5, between an upstream jaw 6 and a downstream jaw 7, each electrically connected to a zone 8 or 9 for receiving and immobilizing the fuse.
  • the fuse holder 4 is articulated on the body 2 about an axis X 4 generally perpendicular to the plane of FIG. 3.
  • the fuse holder 4 comprises a sleeve 41 which forms a substantially cylindrical volume for receiving the fuse 5. It is noted that YY 'the geometric axis of the sleeve 41.
  • the fuse holder 4 also comprises a handle 42 which forms a gripping member for tilting the fuse holder 4 from the position of Figures 1 to 3 to that of Figure 6, through the positions of Figures 4 and 5, and vice versa.
  • the handle 42 is located on the front face 1a of the switch 1.
  • a housing 14 On the body 2 is mounted a housing 14 in which is disposed a micro-switch 15 of size V 4 connected by three lead wires 16a, 16b and 16c to a circuit not shown for controlling the supply voltage of the disconnector 1.
  • a lever 20, more particularly visible in Figure 7, is articulated on the body 2 about an axis X 20 generally parallel to the axis X 4 .
  • the lever 20 is provided with a head 201 for interacting, in some of the disconnector 1 Owners configurations, with the pallet 15a of the microswitch 15.
  • a metal shaft 21 forms the axis X 20 and is surrounded by a torsion spring 22 whose one end 221 is intended to abut against an internal rib 2a of the body 2, while its opposite end 222 is provided to come against the terminal 51 of the fuse 5 in place in the jaw 6, in the position of Figures 1 to 3.
  • the spring 22 exerts on the lever 20 a force F 1 tilting towards the fuse 5, that is to say a force tending to rotate the lever 20 in the trigonometric direction in Figure 3, around the X axis 20 .
  • the spring 22 is positioned so that when its end 222 does not interact with the terminal 51 of the fuse 5, it exerts on the lever 20 a force F ' 1 opposed to the force F 1 and having a tendency to tilt the lever 20 in the opposite trigonometric direction in FIG.
  • the lever 20 is provided with a tab 202 arranged facing the terminal 51 of the fuse 5 in the configuration of Figure 3 and, in particular, a striker 52 integrated in this terminal.
  • the firing pin 52 moves in the direction of arrow F 3 in Figure 3, which has the effect of pivoting the lever 20 about the X axis 20 in the direction trigonometric inverse in this figure.
  • the head 201 moves the pallet 15 a of the micro-contact 15, which has the effect of disconnecting the power supply of the disconnector 1 through the activation of a not shown control unit, the corresponding signal being transmitted by the cables 16a to 16c.
  • XX ' is a median axis of the main portion 203 of the lever 20 located between its articulation zone 204 on the shaft 21 and the head 201.
  • the lever 20 carries a tab 205 extending by a tab 206 which extends opposite the zone 204 relative to the head 201.
  • the tab 205 forms a surface 207 inclined relative to the axis X-X 'of an angle ⁇ whose value is between 40 ° and 60 °, preferably of the order of 50 °.
  • the tongue 206 is defined between an upper surface 208 and a lower surface 209, these surfaces being less inclined relative to the axis X-X 'than the surface 207.
  • the elements 205 and 206 extend between the step 43 and the handle 42. More specifically, the tab 205 rests by its surface 207 against a truncated front surface 431 of the step 43, the surfaces 207 and 431 being generally parallel to each other. In this position, the surface 209 is generally parallel to the upper surface 441 of the plate 44, the surfaces 209 and 441 not being in contact.
  • the tab 205 and the step 43 may be spaced apart from each other, the surfaces 207 and 431 then not being in contact.
  • the opening movement of the fuse holder is detected from its beginning, that is to say after a few degrees, even if the fuse 5 does not. has not yet interacted with the leg 202 of the lever 20.
  • the activation of the micro-contact 15 is possible from the beginning of the pivoting movement of the fuse holder 4, thanks to the detection made by the extensions of the lever 20, constituted by the elements 205 and 206. This activation is maintained during the movement of the fuse holder 4 by the interaction of the step 43 with the tongue 206, then the fuse 5 with the tab 202.

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  • Fuses (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

The fuse carrier moves from a first, closed position to a second, open position. A lever (20) extension (205, 206) is located in the path of one of the components (43). The fuse (5) is connected to jaws of the isolator (1) in the closed position, and can be extracted from the fuse carrier (4) in the open position. The lever is moved by interaction between the extension and the carrier, as change over occurs. The lever actuates the preliminary cut-out control (15)

Description

L'invention a trait à un sectionneur à fusible.The invention relates to a fuse disconnect.

Dans le domaine de la protection des installations électriques contre les sur-intensités, il est connu d'utiliser un fusible logé dans un porte-fusible mobile par rapport au corps d'un sectionneur, le fusible pouvant coopérer avec des mâchoires reliées à des conducteurs amont et aval. Il est également connu d'équiper un tel sectionneur d'un élément de commande auxiliaire, tel qu'un interrupteur, pour limiter les risques de manipulation sous charge d'un tel sectionneur. En effet, dans le cas d'un sectionneur pouvant être intégré à une ligne d'alimentation d'une charge sous 800 volts et 150 ampères, il convient de ne pas manipuler le porte-fusible lorsqu'une telle différence de potentiel et une telle intensité sont appliquées aux bornes du sectionneur, faute de quoi un danger de création d'un arc électrique d'énergie élevée est présent. Il est donc nécessaire pour une personne intervenant sur une ligne électrique équipée d'un tel sectionneur d'isoler la ligne avant de manipuler le porte-fusible.In the field of protection of electrical installations against overcurrent, it is known to use a fuse housed in a movable fuse holder relative to the body of a disconnector, the fuse can cooperate with jaws connected to conductors upstream and downstream. It is also known to equip such a disconnector with an auxiliary control element, such as a switch, to limit the risk of handling under load of such a disconnector. Indeed, in the case of a disconnector that can be integrated into a supply line of a load at 800 volts and 150 amperes, the fuse holder should not be manipulated when such a difference in potential and such intensity are applied across the disconnector, otherwise a danger of creating a high energy arc is present. It is therefore necessary for a person working on a power line equipped with such a disconnector to isolate the line before handling the fuse holder.

Cette notion de sécurité est bien comprise par les électriciens. Il se peut cependant qu'une personne non informée d'une intervention se produisant sur une ligne électrique referme par mégarde un contacteur d'alimentation de cette ligne, d'où un danger pour la personne qui intervient. C'est pourquoi, il est connu d'intégrer dans un sectionneur un interrupteur auxiliaire qui envoie un signal de commande à un interrupteur ou à un contacteur pour éviter une fermeture intempestive d'une ligne.This concept of safety is well understood by electricians. It is possible, however, that a person not informed of an intervention occurring on a power line inadvertently closes a power contactor of this line, hence a danger for the person who intervenes. That is why it is known to integrate in an isolator an auxiliary switch that sends a control signal to a switch or a contactor to prevent untimely closing of a line.

Un tel interrupteur devrait permettre, entre autres, de détecter l'imminence de l'extraction du fusible des mâchoires avec lesquelles il coopère, c'est-à-dire le début du mouvement de dégagement du fusible.Such a switch should allow, among other things, to detect the imminence of the fuse extraction of the jaws with which it cooperates, that is to say the beginning of the fuse release movement.

La fonction énoncée ci-dessus doit être efficace suffisamment tôt pour éviter que le fusible ne soit extrait des mâchoires en étant encore sous tension. C'est pourquoi, la norme CEI 60947-1 prévoit un intervalle de temps minimum de 20 millisecondes entre l'actionnement d'un interrupteur auxiliaire et l'extraction effective du fusible par rapport à ses mâchoires, ceci afin de prendre en compte le temps de transmission de l'information, de l'élément auxiliaire jusqu'au disjoncteur ou au contacteur, et le temps de réponse de ce disjoncteur ou de ce contacteur.The function stated above must be effective early enough to prevent the fuse from being extracted from the jaws while still energized. This is why the IEC 60947-1 standard provides for a minimum time interval of 20 milliseconds between the actuation of an auxiliary switch and the effective extraction of the fuse from its jaws, in order to take into account the time transmission of information, from the auxiliary element to the circuit breaker or contactor, and the response time of this circuit breaker or contactor.

Dans certains systèmes connus, un levier est déplacé par le fusible lors de la mise en mouvement du porte-fusible dans un sens d'extraction du fusible, ceci afin de commander un interrupteur auxiliaire. Le document FR-A-2462017 décrit un sectionneur à fusible selon le préambule de la revendication 1. Ce système ne donne pas entièrement satisfaction dans la mesure où, si le porte-fusible est manoeuvré rapidement, l'élément de commande auxiliaire est commandé par le levier environ 4 millisecondes avant l'extraction effective du fusible par rapport à ses mâchoires, ce qui est insuffisant aux termes de la norme précitée.In some known systems, a lever is moved by the fuse when moving the fuse holder in a fuse extraction direction, in order to control an auxiliary switch. The document FR-A-2462017 discloses a fuse disconnect according to the preamble of claim 1. This system is not entirely satisfactory in that, if the fuse holder is maneuvered quickly, the auxiliary control element is controlled by the lever about 4 milliseconds before the effective extraction of the fuse with respect to its jaws, which is insufficient under the above-mentioned standard.

C'est à ce problème qu'entend plus particulièrement répondre l'invention en proposant un sectionneur dont la sécurité est grandement améliorée par rapport aux dispositifs connus, alors qu'il demeure aisé à manoeuvrer, fiable, et de prix de revient acceptable.It is this problem that the invention intends to respond more particularly by providing a disconnector whose safety is greatly improved over known devices, while it remains easy to maneuver, reliable, and acceptable cost.

Dans cet esprit, l'invention concerne un sectionneur à fusible comprenant un corps, un porte-fusible mobile par rapport à ce corps et se prolongeant par un préhenseur à commande frontale, un levier mobile, en fonction de la présence et/ou de l'état d'un fusible dans le porte-fusible et/ou de la position du porte-fusible, et un élément de commande de pré-coupure de sécurité d'une installation électrique. Ce sectionneur est caractérisé en ce que le levier est pourvu d'au moins une extension disposée sur la trajectoire d'une partie du porte-fusible lorsque celui-ci est déplacé d'une première position, ou position fermée, dans laquelle le fusible est connecté à des mâchoires du sectionneur, vers une seconde position, ou position ouverte, dans laquelle le fusible peut être extrait du porte-fusible, le levier étant déplaçable par interaction entre l'extension précitée et le porte-fusible qui passe de la première à la seconde position, de telle sorte que le levier actionne l'élément de commande de pré-coupure.In this spirit, the invention relates to a fuse switch comprising a body, a fuse holder movable relative to the body and extending by a front-end gripper, a movable lever, depending on the presence and / or the state of a fuse in the fuse holder and / or the position of the fuse holder, and a pre-cutoff control element of an electrical installation. This isolator is characterized in that the lever is provided with at least one extension disposed on the trajectory of a part of the fuse holder when it is moved from a first position, or closed position, in which the fuse is connected to jaws of the disconnector, to a second position, or open position, in which the fuse can be removed from the fuse holder, the lever being movable by interaction between the aforementioned extension and the fuse holder which passes from the first to the second position, so that the lever actuates the pre-cut control element .

Grâce à l'invention, on détecte le mouvement du porte-fusible dès son initialisation, ce qui permet d'anticiper le déplacement du fusible par rapport aux mâchoires et d'allonger l'intervalle de temps entre le déclenchement de l'élément de commande de pré-coupure et l'extraction effective du fusible par rapport aux mâchoires. En effet, dans les systèmes connus, les tolérances de fabrication des éléments en matière plastique et des mâchoires métalliques sont telles que l'on ne peut garantir une interaction effective entre le fusible et le levier que lorsque le porte-fusible a pivoté d'environ 10° alors que, grâce à l'invention, l'élément de commande de pré-coupure est actionné de façon sûre dès que le préhenseur du porte-fusible a pivoté de 3 à 4°.Thanks to the invention, the movement of the fuse holder is detected as soon as it is initialized, which makes it possible to anticipate the movement of the fuse with respect to the jaws and to lengthen the time interval between the triggering of the control element. pre-cutting and effective extraction of the fuse with respect to the jaws. In fact, in known systems, the manufacturing tolerances of the plastic elements and the metal jaws are such that it can not be guaranteed that the fuse and the lever will actually interact until the fuseholder has pivoted about 10 ° while, thanks to the invention, the pre-cutting control element is actuated safely as soon as the gripper of the fuse holder has rotated 3 to 4 °.

Selon des aspects avantageux mais non obligatoires de l'invention, le sectionneur incorpore une ou plusieurs des caractéristiques suivantes :

  • Le levier est articulé autour d'un axe fixe par rapport au corps et est soumis, lorsque le porte-fusible est dans la première position, à un effort élastique tendant à l'éloigner de l'élément de commande de pré-coupure.
  • Le porte-fusible est articulé autour d'un axe fixe par rapport au corps, ce porte-fusible passant de la première à la seconde position par pivotement autour de cet axe.
  • L'élément de commande de pré-coupure est un micro-contact dont la palette forme une partie d'actionnement. Dans ce cas, le levier est avantageusement pourvu d'une tête apte à venir en appui contre cette palette en fonction de la position du levier alors que l'extension précitée s'étend, par rapport à cette tête, sensiblement à l'opposé d'une zone d'articulation du levier sur le corps du sectionneur. On peut prévoir que l'extension précitée s'étend, par rapport à un axe médian de la partie principale du levier, sensiblement à l'opposé de la tête précitée et forme une rampe inclinée par rapport à cet axe, cette rampe étant apte à entrer en contact et à glisser contre une partie du porte-fusible. Cette extension peut former une surface, prolongeant la rampe inclinée apte à entrer en contact et à glisser contre la partie précitée du porte-fusible, après que la rampe inclinée soit dégagée par rapport à cette partie, lors du passage du porte-fusible de sa première à sa seconde position.
  • Le porte-fusible forme une rampe apte à exercer sur l'extension du levier un effort de déplacement du levier. Dans ce cas, cette rampe est avantageusement ménagée à proximité du préhenseur, de telle sorte que son mouvement a une amplitude importante dès le début du déplacement du porte-fusible.
  • Le levier porte une patte apte à subir un effort de déplacement du levier exercé par un percuteur ou une borne du fusible. Cette patte permet, en particulier, de réagir à un éclatement du fusible et de maintenir l'élément de commande de pré-coupure en configuration active, y compris lorsque l'extension du levier n'interagit plus avec le porte-fusible.
According to advantageous but not obligatory aspects of the invention, the disconnector incorporates one or more of the following characteristics:
  • The lever is articulated about a fixed axis relative to the body and is subjected, when the fuse holder is in the first position, to an elastic force tending to move away from the pre-cut control element.
  • The fuse holder is articulated around a fixed axis relative to the body, this fuse holder passing from the first to the second position by pivoting about this axis.
  • The pre-cut control element is a micro-contact whose pallet forms an actuating part. In this case, the lever is advantageously provided with a head adapted to bear against this pallet according to the position of the lever while the aforementioned extension extends, with respect to this head, substantially opposite the a zone of articulation of the lever on the body of the disconnector. It can be provided that the aforementioned extension extends, with respect to a central axis of the main part of the lever, substantially opposite to the aforementioned head and forms a ramp inclined with respect to this axis, this ramp being adapted to contact and slide against part of the fuse holder. This extension can form a surface, extending the inclined ramp able to come into contact with and slide against the aforementioned part of the fuse holder, after the inclined ramp is disengaged with respect to this part, during the passage of the fuse holder of its first to his second position.
  • The fuse holder forms a ramp capable of exerting on the extension of the lever a force of displacement of the lever. In this case, this ramp is advantageously arranged close to the gripper, so that its movement has a large amplitude from the beginning of the movement of the fuse holder.
  • The lever carries a leg adapted to undergo a force of movement of the lever exerted by a striker or a terminal of the fuse. This tab makes it possible, in particular, to react to a bursting of the fuse and to maintain the pre-cut control element in an active configuration, even when the extension of the lever no longer interacts with the fuse holder.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre d'un mode de réalisation d'un sectionneur conforme à son principe, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • La figure 1 est une vue en perspective d'un sectionneur conforme à l'invention ;
  • La figure 2 est une vue de face du sectionneur de la figure 1 ;
  • La figure 3 est une coupe selon la ligne III-III à la figure 1 ;
  • La figure 4 est une vue analogue à la figure 3 au début d'une ouverture du sectionneur ;
  • La figure 5 est une vue analogue à la figure 3 lors d'une étape ultérieure d'ouverture du sectionneur ;
  • La figure 6 est une vue analogue à la figure 3 au terme de l'ouverture du sectionneur et
  • La figure 7 est une vue en perspective du levier d'actionnement du sectionneur des figures 1 à 6.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of an embodiment of a disconnector according to its principle, given solely by way of example and with reference to the accompanying drawings in which:
  • Figure 1 is a perspective view of a disconnector according to the invention;
  • Figure 2 is a front view of the disconnector of Figure 1;
  • Figure 3 is a section along the line III-III in Figure 1;
  • Figure 4 is a view similar to Figure 3 at the beginning of an opening of the disconnector;
  • Figure 5 is a view similar to Figure 3 in a subsequent step of opening the disconnector;
  • FIG. 6 is a view similar to FIG. 3 at the end of the opening of the disconnector and
  • Figure 7 is a perspective view of the operating lever of the disconnector of Figures 1 to 6.

Le sectionneur 1 représenté sur les figures comprend un corps 2 prévu pour être monté sur un rail 3, par exemple par encliquetage. Le corps 2 définit un volume de réception d'un porte-fusible 4 destiné à recevoir un fusible 5, entre une mâchoire amont 6 et une mâchoire aval 7, chacune reliée électriquement à une zone 8 ou 9 de réception et d'immobilisation de l'extrémité dénudée d'un câble conducteur 10 ou 11, chaque zone comprenant un étrier 12 ou 13 et une vis de blocage 12a, 13a.The disconnector 1 shown in the figures comprises a body 2 intended to be mounted on a rail 3, for example by snapping. The body 2 defines a receiving volume of a fuse holder 4 intended to receive a fuse 5, between an upstream jaw 6 and a downstream jaw 7, each electrically connected to a zone 8 or 9 for receiving and immobilizing the fuse. stripped end of a conductor cable 10 or 11, each zone comprising a yoke 12 or 13 and a locking screw 12 a, 13 a.

Le porte-fusible 4 est articulé sur le corps 2 autour d'un axe X4 globalement perpendiculaire au plan de la figure 3. Le porte-fusible 4 comporte un manchon 41 qui forme un volume sensiblement cylindrique de réception du fusible 5. On note Y-Y' l'axe géométrique du manchon 41. Le porte-fusible 4 comprend également une poignée 42 qui forme un organe de préhension pour faire basculer le porte-fusible 4 de la position des figures 1 à 3 à celle de la figure 6, en passant par les positions des figures 4 et 5, et réciproquement. La poignée 42 est située sur la face avant 1a du sectionneur 1.The fuse holder 4 is articulated on the body 2 about an axis X 4 generally perpendicular to the plane of FIG. 3. The fuse holder 4 comprises a sleeve 41 which forms a substantially cylindrical volume for receiving the fuse 5. It is noted that YY 'the geometric axis of the sleeve 41. The fuse holder 4 also comprises a handle 42 which forms a gripping member for tilting the fuse holder 4 from the position of Figures 1 to 3 to that of Figure 6, through the positions of Figures 4 and 5, and vice versa. The handle 42 is located on the front face 1a of the switch 1.

Sur le corps 2 est monté un boîtier 14 dans lequel est disposé un micro-contact 15 de taille V4 relié par trois câbles conducteurs 16a, 16b et 16c à un circuit non représenté de commande de l'alimentation en tension du sectionneur 1.On the body 2 is mounted a housing 14 in which is disposed a micro-switch 15 of size V 4 connected by three lead wires 16a, 16b and 16c to a circuit not shown for controlling the supply voltage of the disconnector 1.

Un levier 20, plus particulièrement visible à la figure 7, est articulé sur le corps 2 autour d'un axe X20 globalement parallèle à l'axe X4. Le levier 20 est pourvu d'une tête 201 destinée à interagir, dans certaines configurations d'utilisation du sectionneur 1, avec la palette 15a du micro-contact 15.A lever 20, more particularly visible in Figure 7, is articulated on the body 2 about an axis X 20 generally parallel to the axis X 4 . The lever 20 is provided with a head 201 for interacting, in some of the disconnector 1 Owners configurations, with the pallet 15a of the microswitch 15.

Un arbre métallique 21 matérialise l'axe X20 et est entouré par un ressort de torsion 22 dont une première extrémité 221 est destinée à venir en appui contre une nervure interne 2a du corps 2, alors que son extrémité opposée 222 est prévue pour venir en appui contre la borne 51 du fusible 5 en place dans la mâchoire 6, dans la position des figures 1 à 3.A metal shaft 21 forms the axis X 20 and is surrounded by a torsion spring 22 whose one end 221 is intended to abut against an internal rib 2a of the body 2, while its opposite end 222 is provided to come against the terminal 51 of the fuse 5 in place in the jaw 6, in the position of Figures 1 to 3.

Du fait de sa coopération avec le corps 2 et le fusible 5, le ressort 22 exerce sur le levier 20 un effort F1 de basculement en direction du fusible 5, c'est-à-dire un effort ayant tendance à faire pivoter le levier 20 dans le sens trigonométrique à la figure 3, autour de l'axe X20.Due to its cooperation with the body 2 and the fuse 5, the spring 22 exerts on the lever 20 a force F 1 tilting towards the fuse 5, that is to say a force tending to rotate the lever 20 in the trigonometric direction in Figure 3, around the X axis 20 .

Le ressort 22 est positionné de telle sorte que, lorsque son extrémité 222 n'interagit pas avec la borne 51 du fusible 5, il exerce sur le levier 20 un effort F'1 opposé à l'effort F1 et ayant tendance à faire basculer le levier 20 dans le sens trigonométrique inverse à la figure 3.The spring 22 is positioned so that when its end 222 does not interact with the terminal 51 of the fuse 5, it exerts on the lever 20 a force F ' 1 opposed to the force F 1 and having a tendency to tilt the lever 20 in the opposite trigonometric direction in FIG.

Le levier 20 est pourvu d'une patte 202 disposée en regard de la borne 51 du fusible 5 dans la configuration de la figure 3 et, en particulier, d'un percuteur 52 intégré dans cette borne. Ainsi, en cas d'éclatement du fusible 5, le percuteur 52 se déplace dans le sens de la flèche F3 à la figure 3, ce qui a pour effet de faire pivoter le levier 20 autour de l'axe X20 dans le sens trigonométrique inverse sur cette figure.The lever 20 is provided with a tab 202 arranged facing the terminal 51 of the fuse 5 in the configuration of Figure 3 and, in particular, a striker 52 integrated in this terminal. Thus, in case of bursting of the fuse 5, the firing pin 52 moves in the direction of arrow F 3 in Figure 3, which has the effect of pivoting the lever 20 about the X axis 20 in the direction trigonometric inverse in this figure.

Si le levier 20 pivote dans le sens trigonométrique inverse sur la figure 3 à partir de la position représentée, la tête 201 déplace la palette 15a du micro-contact 15, ce qui a pour effet de couper l'alimentation du sectionneur 1 en tension grâce à l'activation d'une unité de commande non représentée, le signal correspondant étant transmis par les câbles 16a à 16c.If the lever 20 pivots in the opposite trigonometric direction in FIG. 3 from the position shown, the head 201 moves the pallet 15 a of the micro-contact 15, which has the effect of disconnecting the power supply of the disconnector 1 through the activation of a not shown control unit, the corresponding signal being transmitted by the cables 16a to 16c.

On note X-X' un axe médian de la partie principale 203 du levier 20 située entre sa zone 204 d'articulation sur l'arbre 21 et la tête 201. A l'opposé de la tête 201 par rapport à l'axe X-X', le levier 20 porte une patte 205 se prolongeant par une languette 206 qui s'étend à l'opposé de la zone 204 par rapport à la tête 201.XX 'is a median axis of the main portion 203 of the lever 20 located between its articulation zone 204 on the shaft 21 and the head 201. Opposite the head 201 with respect to the X-X axis ', the lever 20 carries a tab 205 extending by a tab 206 which extends opposite the zone 204 relative to the head 201.

La patte 205 forme une surface 207 inclinée par rapport à l'axe X-X' d'un angle α dont la valeur est comprise entre 40° et 60°, de préférence de l'ordre de 50°. La languette 206 est définie entre une surface supérieure 208 et une surface inférieure 209, ces surfaces étant moins inclinées par rapport à l'axe X-X' que la surface 207.The tab 205 forms a surface 207 inclined relative to the axis X-X 'of an angle α whose value is between 40 ° and 60 °, preferably of the order of 50 °. The tongue 206 is defined between an upper surface 208 and a lower surface 209, these surfaces being less inclined relative to the axis X-X 'than the surface 207.

Dans la position fermée représentée à la figure 3, position dans laquelle les bornes 51 et 53 du fusible 5 sont en place dans les mâchoires 6 et 7, la languette 206 est engagée en avant d'une marche 43 du porte-fusible 4. Cette marche prolonge un plateau 44 globalement perpendiculaire à l'axe Y-Y' qui est confondu avec l'axe central du fusible 5 en place dans le porte-fusible 4.In the closed position shown in FIG. 3, position in which the terminals 51 and 53 of the fuse 5 are in place in the jaws 6 and 7, the tongue 206 is engaged in front of a step 43 of the fuse holder 4. This walk extends a plateau 44 globally perpendicular to the axis YY 'which coincides with the central axis of the fuse 5 in place in the fuse holder 4.

En positon fermée du porte-fusible 4, les éléments 205 et 206 s'étendent entre la marche 43 et la poignée 42. Plus précisément, la patte 205 repose par sa surface 207 contre une surface antérieure tronquée 431 de la marche 43, les surfaces 207 et 431 étant globalement parallèles entre elles. Dans cette position, la surface 209 est globalement parallèle à la surface supérieure 441 du plateau 44, les surfaces 209 et 441 n'étant pas en contact.In closed position of the fuse holder 4, the elements 205 and 206 extend between the step 43 and the handle 42. More specifically, the tab 205 rests by its surface 207 against a truncated front surface 431 of the step 43, the surfaces 207 and 431 being generally parallel to each other. In this position, the surface 209 is generally parallel to the upper surface 441 of the plate 44, the surfaces 209 and 441 not being in contact.

En variante, la patte 205 et la marche 43 peuvent être distantes l'une de l'autre, les surfaces 207 et 431 n'étant alors pas en contact.Alternatively, the tab 205 and the step 43 may be spaced apart from each other, the surfaces 207 and 431 then not being in contact.

Lorsqu'on souhaite ouvrir le sectionneur 1, c'est-à-dire faire pivoter le porte-fusible 4 dans le sens trigonométrique aux figures 4 à 6, on exerce sur la poignée 42 un effort F4 visant à abaisser cette poignée. Du fait du début du mouvement de la poignée 42, la marche 43 exerce sur la patte 205 un effort F5 de poussée dirigé vers le haut et vers la gauche aux figures 3 et 4. Ceci a pour effet d'amener la tête 201 à appliquer sur la palette 15a du micro-contact 15 un effort F6 d'activation du micro-contact, ce qui est détecté par l'unité de commande reliée aux câbles 16a à 16c.When it is desired to open the disconnector 1, that is to say rotate the fuse holder 4 in the trigonometric direction in Figures 4 to 6, it exerts on the handle 42 a force F 4 to lower the handle. Due to the beginning of the movement of the handle 42, the step 43 exerts on the lug 205 a thrust force F 5 directed upwards and to the left in FIGS. 3 and 4. This has the effect of causing the head 201 to applying to the pallet 15 a of the microswitch 15 a force F 6 of the micro-switch activation, which is detected by the control unit connected to the cables 16a to 16c.

Ainsi, grâce à la patte 205 et à la géométrie du porte-fusible 4, le mouvement d'ouverture du porte-fusible est détecté dès son début, c'est-à-dire après quelques degrés, même si le fusible 5 n'a pas encore interagi avec la patte 202 du levier 20.Thus, thanks to the tab 205 and the geometry of the fuse holder 4, the opening movement of the fuse holder is detected from its beginning, that is to say after a few degrees, even if the fuse 5 does not. has not yet interacted with the leg 202 of the lever 20.

Lorsque le mouvement de pivotement du porte-fusible 4 se prolonge, la patte 43 vient au contact de la surface 209 de la languette 206 et maintient ainsi la tête 201 en appui contre la palette 15a ce qui, là encore, peut être détecté par une unité de commande raccordée au câble 16a à 16c, dans la mesure où l'effort F5 est maintenu.When the pivotal movement of the fuse holder 4 is extended, the tab 43 comes into contact with the surface 209 of the tab 206 and thus keeps the head 201 bearing against the pallet 15 in which, again, can be detected by a control unit connected to the cable 16 has 16 c , to the extent that the effort F 5 is maintained.

Il est alors possible d'atteindre la position de la figure 6 où le fusible 5 peut être aisément extrait du manchon 41, comme représenté par la flèche F7. Dans cette position, l'effort F'1 garantit que le micro-contact 15 demeure activé.It is then possible to reach the position of FIG. 6 where the fuse 5 can be easily extracted from the sleeve 41, as represented by the arrow F 7 . In this position, the force F ' 1 ensures that the micro-contact 15 remains activated.

Au vu de ce qui précède, l'activation du micro-contact 15 est possible dès le début du mouvement de pivotement du porte-fusible 4, grâce à la détection opérée par les extensions du levier 20, constituées par les éléments 205 et 206. Cette activation est maintenue au cours du mouvement du porte-fusible 4 par l'interaction de la marche 43 avec la languette 206, puis du fusible 5 avec la patte 202.In view of the above, the activation of the micro-contact 15 is possible from the beginning of the pivoting movement of the fuse holder 4, thanks to the detection made by the extensions of the lever 20, constituted by the elements 205 and 206. This activation is maintained during the movement of the fuse holder 4 by the interaction of the step 43 with the tongue 206, then the fuse 5 with the tab 202.

Claims (10)

  1. Disconnecting switch with fuse comprising a body (2), a fuse holder (4) which is mobile relative to the body and extends by a gripper (42) with front control, a mobile lever (20) according to the presence and/or state of a fuse (5) in the fuse holder and/or to the position of the fuse holder, and a safety pre-disconnection control element (15) of an electrical installation, characterised in that the lever (20) is provided with at least one extension (205, 206) disposed in the path of part (43) of the fuse holder when this is displaced from a first position (Figure 3), or closed position, in which the fuse (5) is connected to jaws (6,7) of the disconnecting switch (1), to a second position or open position (Figure 6) in which the fuse can be removed (F7) from the fuse holder (4), the lever being displaceable by interaction (F5) between the extension and the fuse holder moving from the first to the second position, in such a manner that the lever actuates (F6) the pre-disconnection control element (15).
  2. Disconnecting switch according to claim 1, characterised in that the lever (20) is hinged about an axis (X20) fixed relative to the body (2) and, when the fuse holder (4) is in the first position, is subjected to a resilient force (F1) tending to move the same away from the pre-disconnection control element (15).
  3. Disconnecting switch according to one of the preceding claims, characterised in that the fuse holder (4) is hinged about an axis (X4) fixed relative to the body (2), the fuse holder moving from the first (Figure 3) into the second (Figure 6) position by pivoting about the said axis.
  4. Disconnecting switch according to one of the preceding claims, characterised in that the pre-disconnection control element is a micro-contact (15) whose blade (15a) forms an actuator.
  5. Disconnecting switch according to claim 4, characterised in that the lever (20) is provided with a head (201) capable of coming to bear (F6) on the said blade according to the position of the lever and in that the extension (205, 206) extends relative to the head substantially in the opposite direction to a zone (204) of articulation of the lever on the body (2).
  6. Disconnecting switch according to claim 5, characterised in that the extension (205, 206) extends relative to a central axis (X-X') of the main part (203) of the lever (20) substantially in the opposite direction to the said head (201) and forms a ramp (207) inclined (α) relative to the said axis and capable of coming into contact with and sliding over part (43) of the fuse holder (4).
  7. Disconnecting switch according to claim 6, characterised in that the extension (205, 206) forms a surface (209) extending the inclined ramp (207) and capable of coming into contact with and sliding over part (43) of the fuse holder (4) after the inclined ramp has disengaged from the said part, upon movement of the fuse holder from the first position (Figure 3) to the second position (Figure 6).
  8. Disconnecting switch according to one of the preceding claims, characterised in that the fuse holder (4) forms a ramp (431) capable of exerting on the extension (205, 206) a displacement force (F5) of the lever (20).
  9. Disconnecting switch according to claim 9, characterised in that the ramp (431) is housed close to the gripper (42).
  10. Disconnecting switch according to one of the preceding claims, characterised in that the lever (20) bears a lug (202) capable of undergoing a displacement force of the lever exerted by a striking pin (52) or terminal (51) of the fuse (5).
EP02356177A 2001-09-19 2002-09-18 A fuse-disconnecting switch having a fuse holder and a control element for a security circuit Expired - Lifetime EP1296342B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200230633T SI1296342T1 (en) 2001-09-19 2002-09-18 A fuse-disconnecting switch having a fuse holder and a control element for a security circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0112086 2001-09-19
FR0112086A FR2829870B1 (en) 2001-09-19 2001-09-19 FUSE DISCONNECT COMPRISING A FUSE HOLDER AND A CONTROL MEMBER FOR A SAFETY CIRCUIT

Publications (2)

Publication Number Publication Date
EP1296342A1 EP1296342A1 (en) 2003-03-26
EP1296342B1 true EP1296342B1 (en) 2007-10-31

Family

ID=8867418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02356177A Expired - Lifetime EP1296342B1 (en) 2001-09-19 2002-09-18 A fuse-disconnecting switch having a fuse holder and a control element for a security circuit

Country Status (6)

Country Link
EP (1) EP1296342B1 (en)
AT (1) ATE377253T1 (en)
DE (1) DE60223214T2 (en)
ES (1) ES2295305T3 (en)
FR (1) FR2829870B1 (en)
SI (1) SI1296342T1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006015303A1 (en) * 2006-03-28 2007-10-11 Siemens Ag Cover for a fuse-switch-disconnector and fuse-switch-disconnector
CN100562960C (en) * 2006-10-11 2009-11-25 上海华通电气有限公司 isolating switch fuse group
SI22960A (en) * 2009-01-13 2010-07-30 Eti Elektroelement D.D. Safety electrical switch with fusible cut-out

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462017A1 (en) * 1979-07-20 1981-02-06 Legrand Sa Fuse box with verification of fuse capsule insertion - using sprung finger on shoulder of lever in fuse box and linked to signalling device
FR2508701A1 (en) * 1981-06-30 1982-12-31 Legrand Sa PRE-SWITCH CUTTER AND DISCONNECT SWITCH
FR2551915B1 (en) * 1983-09-08 1986-08-29 Hager Electro IMPROVEMENTS RELATING TO CIRCUIT BREAKERS WITH OSCILLATING HANDLE CARRYING A FUSE CARTRIDGE AND FORMING A CAM FOR THE CONTROL OF AN AUXILIARY CIRCUIT
FR2818005B1 (en) * 2000-12-08 2003-03-21 Ferraz Shawmut FUSE DISCONNECTOR COMPRISING A FUSE HOLDER AND A CONTROL ELEMENT FOR A SAFETY CIRCUIT

Also Published As

Publication number Publication date
ATE377253T1 (en) 2007-11-15
FR2829870A1 (en) 2003-03-21
EP1296342A1 (en) 2003-03-26
FR2829870B1 (en) 2003-12-19
DE60223214D1 (en) 2007-12-13
SI1296342T1 (en) 2008-02-29
DE60223214T2 (en) 2008-08-14
ES2295305T3 (en) 2008-04-16

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