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EP3459102A1 - Fuse cartridge - Google Patents

Fuse cartridge

Info

Publication number
EP3459102A1
EP3459102A1 EP17731200.6A EP17731200A EP3459102A1 EP 3459102 A1 EP3459102 A1 EP 3459102A1 EP 17731200 A EP17731200 A EP 17731200A EP 3459102 A1 EP3459102 A1 EP 3459102A1
Authority
EP
European Patent Office
Prior art keywords
fuse
contact
resistive
contact surface
cartridge
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
EP17731200.6A
Other languages
German (de)
French (fr)
Other versions
EP3459102B1 (en
Inventor
Nicolas Kalischek
Denis Deckert
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
Priority to PL17731200T priority Critical patent/PL3459102T3/en
Publication of EP3459102A1 publication Critical patent/EP3459102A1/en
Application granted granted Critical
Publication of EP3459102B1 publication Critical patent/EP3459102B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • 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
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/0411—Miniature fuses
    • H01H85/0415—Miniature fuses cartridge type
    • H01H85/0417—Miniature fuses cartridge type with parallel side contacts
    • 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
    • H01H85/38—Means for extinguishing or suppressing arc
    • H01H2085/385—Impedances connected with the end contacts of the fusible element
    • 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
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/044—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified
    • H01H85/045—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified cartridge type
    • H01H85/0456—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified cartridge type with knife-blade end contacts

Definitions

  • the present invention relates to the field of electrical safety equipment, and relates to a fuse cartridge having a fuse element, an envelope enclosing said fuse element and two end contacts disposed on either side of said envelope.
  • the role of the fuse cartridge is to open an electrical circuit when the intensity is too high. This is traditionally done by melting a fuse element under the effect of the temperature rise caused by the overcurrent.
  • the present invention aims to overcome the aforementioned drawbacks and to provide a fuse cartridge incorporating a complementary protection device for limiting the current during the introduction of the fuse cartridge.
  • the subject of the present invention is a fusible cartridge as indicated in the preamble, characterized in that it comprises at least one resistive element connected in series with said fuse element.
  • This resistive element is a complementary element which makes it possible to reduce, at least temporarily, the intensity of the current flowing in the circuit.
  • said resistive element may be disposed in the casing and be mounted in series between one of said end contacts, said resistive contact, and the fuse element.
  • said resistive contact may comprise a first and a second contact surface electrically insulated from each other, the resistive element may be electrically connected to the first contact surface and the fuse element may electrically connect the second contact surface and the opposite extremal contact.
  • the current can flow through two channels depending on whether the contact is established on the one hand, between the first contact surface of the resistive contact and the opposite contact, through the resistive element and the fuse element and, d ' on the other hand, between the second contact surface of the resistive contact and the opposite contact through only the fuse element. In both cases, overcurrent protection is provided.
  • one of said end contacts, said resistive contact may comprise a first and a second contact surfaces and said resistive element may be formed by one of said contact surfaces, said first contact surface.
  • said first contact surface may be made of a material whose electrical resistivity is greater than the electrical resistivity of the material in which the second contact surface is made.
  • the current flows through two channels depending on whether the contact is established on the one hand, between the first contact surface of the resistive contact and the opposite contact, through the resistive material of the first contact surface. and the fuse element and, secondly, between the second contact surface of the resistive contact and the opposite contact through only the fuse element.
  • overcurrent protection is provided.
  • said resistive contact may comprise a first and a second contact surfaces and said first contact surface may comprise a resistive element.
  • the current flows through two possible paths.
  • the current flows through the resistive element of the first surface of the resistive contact. contact and the fuse element and, when the contact is established between the second surface of the contact of the resistive contact and the opposite contact, it passes through only the fuse element. In both cases, overcurrent protection is provided.
  • the resistive element may be chosen from: an electrical resistance, a wire, a ribbon, a blade, a cut sheet, a wound resistance.
  • the invention also provides, regardless of the embodiment, to have a fuse cartridge that can include two resistive elements and wherein the two end contacts form resistive end contacts.
  • a fuse cartridge that can include two resistive elements and wherein the two end contacts form resistive end contacts.
  • the fuse cartridge is of the knife type.
  • Such an arrangement makes it possible to ensure the correct positioning of the fuse cartridge in a fuse holder, by ensuring that the first contact of the cartridge with the claws of a fuse holder is made with the first contact surface of the fuse cartridge. .
  • the first contact surface may have a small area opposite that of the second contact surface. Indeed, this first surface is intended to come into electrical contact only during the introduction of the fuse cartridge, namely temporarily.
  • the second contact surface is that which is solicited during the so-called conventional use of the fuse cartridge, that is to say when the current flows only through the fuse element, and it is therefore essential that the electrical contact is correctly made at the level of the second contact surface.
  • Figure 1 is an elevational view of a fuse cartridge according to a first embodiment
  • Figure 2 is a view schematically showing the fuse cartridge illustrated in Figure 1
  • Figure 3 is a schematic view of a fuse cartridge according to the second embodiment
  • FIG. 4 is a schematic view of a fuse cartridge according to the third embodiment
  • FIG. 5 is a schematic view of a fuse cartridge comprising two resistive elements
  • FIGS. 6A to 6C represent the stages. insertion of the fuse cartridge of Figures 1 to 2 in the claws of a fuse holder
  • Figures 7A to 7C show the steps of insertion of the fuse cartridge of Figure 5 in the claws of a door -fuse.
  • FIGS 1 and 2 show schematically a fuse cartridge 1 according to a first embodiment of the invention. It comprises an envelope 4 integrating on the one hand, a fuse element 5 which melts when an overcurrent occurs to open the circuit in which it is mounted and, on the other hand, a resistive element 6.
  • This resistive element 6 is intended to provide the current limiting function in the circuit concerned, in order to provide protection when the circuit is closed by the fuse cartridge 1.
  • one of the end contacts 2, 3 of the fuse cartridge 1 comprises two distinct contact surfaces 7, 8, designated as being a first contact surface 7 and a second contact surface 8.
  • the second contact surface 8 is connected to the opposite end contact 3 by the fuse element 5.
  • the end contacts 2, 3 of the fuse cartridge 1 are in the form of parallelepipedic knives and the first contact surface 7 is positioned on the opposite side to the latching lugs 13 for the removal handle.
  • the resistive element 6 is connected in series between the first contact surface 7 and the fuse element 5, it is in this example a resistive wire made of aluminum.
  • the fuse cartridge 1 always protects the circuit against overcurrents, whatever the first or the second surface 7, 8 of the resistive end contact 2 which closes the circuit, that is to say whatever the position fuse cartridge 1 in a fuse holder.
  • the first and second contact surfaces 7, 8 are electrically insulated from each other, for example by a layer 12 of air or electrically insulating material, such as a ceramic material, such as steatite, for example, glass, or a synthetic material, as is the case in the example illustrated.
  • a layer 12 of air or electrically insulating material such as a ceramic material, such as steatite, for example, glass, or a synthetic material, as is the case in the example illustrated.
  • the first contact surface 7 has in this example an area that corresponds to half that of the second contact surface 8.
  • This first contact surface 7 is the one that is intended to be the first to come into contact with the claws of the A fuse holder when placing the fuse cartridge 1.
  • the second contact surface 8 is the surface which is in contact with the claws of the fuse holder when the fuse cartridge 1 is in its mounted position.
  • FIG. 3 shows a fusible cartridge 10 according to a second embodiment of the invention in which a part of an end contact 20 forms the resistive element 16.
  • the resistive end-contact 20 thus comprises a first contact surface 7 which form this resistive element 16 and which is made of a resistive material, such as carbon and a second contact surface 8 made of an electrically conductive material, such as aluminum, bronze, copper or brass, for example .
  • a conductive element 14 electrically connects the first contact surface 7 to the fuse element 5.
  • the protection is identical to that described with respect to the first embodiment.
  • the circuit is closed on the first contact surface 16 and the opposite contact 3
  • the current flows through this first resistive surface 16 and the fuse element 5.
  • the current is reduced and the protection against overcurrent is ensured.
  • the circuit is closed on the second contact surface 8, the current flows through the fuse element 5 so that overcurrent protection is always ensured.
  • FIG. 4 shows a fuse cartridge 100 according to a third embodiment of the invention.
  • This fuse cartridge 100 differs from that of FIG. 3 in that the resistive element 6 is an additional element integrated in the resistive end contact 20 ', at the level of the first contact surface 7.
  • the resistive element 6 can be an electrical resistor, a wire, a ribbon, a blade, a cut sheet metal or a wound resistance, for example. This configuration calls for the same advantages as those indicated with respect to the preceding embodiments.
  • FIG. 5 shows a fuse cartridge 110 according to a fourth embodiment of the invention in which the two end contacts 2, 2 'are resistive contacts, that is to say that they are both connected to a resistive element 6, 6 '.
  • the two end contacts 2 and 2 'each comprise a first contact surface 7, 7' and a second contact surface 8, 8 'electrically insulated from one another by an insulating material 12, 12' and the resistive elements 6 and 6 'are electrically connected on the one hand to the fuse element 5 and on the other hand to the corresponding first contact surface 7, 7'.
  • FIGS. 6A to 6C show the various steps of mounting a fuse cartridge 1 according to the first embodiment in a fuse holder.
  • the cartridge 1 is shown without its envelope 4.
  • Figure 6A shows the fuse cartridge 1 before insertion into the fuse holder.
  • Figure 6B shows the first contact between the fuse cartridge 1 and the claws 9 and 11 of the fuse holder.
  • This first contact is made, on the one hand, between the first contact surface 7 of the resistive contact 2 and a claw 9 and, on the other hand, between the opposite contact 3 and the other claw 11 of the fuse holder.
  • the current flows in this way fuse holder from the claw 9, then in the first contact surface 7, then in the resistive element 6, then in the fuse element 5, then in the opposite contact 3 and then in the claw 11, or vice versa.
  • the fuse cartridge 1 is thus positioned during its insertion, the corresponding circuit is both protected against overcurrent and limited in current.
  • FIG. 6C shows the fuse cartridge 1 in position mounted in the fuse holder 11.
  • the claw 9 is in contact with the first contact surface 7 and the second contact surface 8 of the resistive contact 2.
  • the current flows through the circuit from the second contact surface 8 because the circuit is less resistive.
  • the current thus flows into the fuse holder from the claw 9, then into the second contact surface 8 and then into the fuse element 5, then into the opposite contact 3 and then into the claw 10, or vice versa.
  • Figures 7A to 7C correspond to the establishment of a fuse cartridge 110 shown without its envelope 4 in the same fuse holder as that shown in Figures 6A to 6C.
  • the set up is the same. The difference is that in the position illustrated in Figure 7B, the circuit closes on the first two contact surfaces 7, 7 'of the fuse cartridge 110, and the current passes through two resistive elements 6, 6' instead of only one in the fuse cartridge 1 of FIGS. 6A to 6C.
  • the fuse cartridge 1, 10, 100, 110 thus makes it possible, in a single device, on the one hand, to reduce the intensity of the current and thus limit the inrush current when the cartridge is inserted. fuse 1, 10, 100, 110 while having the conventional protection against overcurrent and, secondly, to have said conventional protection when the fuse cartridge is in its operative position in the fuse holder.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fuses (AREA)

Abstract

The present invention relates to a fuse cartridge (1) comprising a fuse element, a casing (4) housing the fuse element, and two end contacts (2, 3) disposed at each end of the casing (4). The fuse cartridge (1) is characterised in that it comprises at least one resistive element mounted in series with the fuse element.

Description

Cartouche fusible  Fuse Cartridge
La présente invention relève du domaine des équipements de sécurité électrique, et a pour objet une cartouche fusible comportant un élément fusible, une enveloppe renfermant ledit élément fusible et deux contacts extrémaux disposés de part et d'autre de ladite enveloppe. The present invention relates to the field of electrical safety equipment, and relates to a fuse cartridge having a fuse element, an envelope enclosing said fuse element and two end contacts disposed on either side of said envelope.
Le rôle de la cartouche fusible est d'ouvrir un circuit électrique lorsque l'intensité y est trop élevée. Cela est réalisé traditionnellement par la fusion d'un élément fusible sous l'effet de l'élévation de température provoquée par la surintensité. The role of the fuse cartridge is to open an electrical circuit when the intensity is too high. This is traditionally done by melting a fuse element under the effect of the temperature rise caused by the overcurrent.
Lors de la fermeture des circuits par la mise en place d'une cartouche fusible, l'on peut observer l'apparition de courants d'appel très importants et pouvant atteindre plusieurs centaines d'ampères. Cela est particulièrement le cas dans les circuits à courant continu pouvant comporter par exemple des onduleurs convertisseurs. Ceci a pour effet de souder littéralement la cartouche fusible aux contacts du porte-fusible lors de sa mise en place. En outre, ce problème survient quasi systématiquement dans de tels circuits comportant des étages de condensateurs, qui lorsqu'ils sont déchargés présentent un court-circuit au démarrage de celui-ci. When closing circuits by installing a fuse cartridge, we can observe the appearance of very large currents and up to several hundred amperes. This is particularly the case in DC circuits which may comprise for example inverter converters. This has the effect of literally solder the fuse cartridge to the contacts of the fuse holder when it is put in place. In addition, this problem occurs almost systematically in such circuits having capacitor stages, which when discharged have a short circuit at startup thereof.
Il existe un deuxième inconvénient lors de la fermeture de ces circuits, qui est le stress produit lors des charges rapides ou des mises en route brusques. Cela peut entraîner un vieillissement accéléré des équipements montés dans le circuit. II existe ainsi un besoin de disposer d'un système permettant de protéger les équipements d'un circuit, même lors de la fermeture ou mise en route du circuit par l'intermédiaire d'une cartouche fusible. There is a second drawback when closing these circuits, which is the stress produced during fast loads or sudden starts. This can lead to accelerated aging of the equipment mounted in the circuit. There is thus a need to have a system for protecting the equipment of a circuit, even when closing or starting the circuit via a fuse cartridge.
La présente invention a pour but de pallier les inconvénients précités et de proposer une cartouche fusible intégrant un dispositif de protection complémentaire permettant de limiter le courant lors de la mise en place de cette cartouche fusible. The present invention aims to overcome the aforementioned drawbacks and to provide a fuse cartridge incorporating a complementary protection device for limiting the current during the introduction of the fuse cartridge.
A cet effet, la présente invention a pour objet une cartouche fusible telle qu'indiquée en préambule, caractérisée en ce qu'elle comporte au moins un élément résistif monté en série avec ledit élément fusible. Cet élément résistif est un élément complémentaire qui permet de réduire, au moins temporairement, l'intensité du courant circulant dans le circuit. Selon un premier mode de réalisation, ledit élément résistif peut être disposé dans l'enveloppe et être monté en série entre l'un desdits contacts extrémaux, dit contact résistif, et l'élément fusible. For this purpose, the subject of the present invention is a fusible cartridge as indicated in the preamble, characterized in that it comprises at least one resistive element connected in series with said fuse element. This resistive element is a complementary element which makes it possible to reduce, at least temporarily, the intensity of the current flowing in the circuit. According to a first embodiment, said resistive element may be disposed in the casing and be mounted in series between one of said end contacts, said resistive contact, and the fuse element.
A cet effet, ledit contact résistif peut comporter une première et une deuxième surfaces de contact isolées électriquement l'une de l'autre, l'élément résistif peut être relié électriquement à la première surface de contact et l'élément fusible peut relier électriquement la deuxième surface de contact et le contact extrémal opposé. For this purpose, said resistive contact may comprise a first and a second contact surface electrically insulated from each other, the resistive element may be electrically connected to the first contact surface and the fuse element may electrically connect the second contact surface and the opposite extremal contact.
Ainsi, le courant peut circuler à travers deux voies selon que le contact est établi d'une part, entre la première surface de contact du contact résistif et le contact opposé, en traversant l'élément résistif et l'élément fusible et, d'autre part, entre la deuxième surface de contact du contact résistif et le contact opposé en traversant uniquement l'élément fusible. Dans les deux cas, la protection contre les surintensités est assurée. Thus, the current can flow through two channels depending on whether the contact is established on the one hand, between the first contact surface of the resistive contact and the opposite contact, through the resistive element and the fuse element and, d ' on the other hand, between the second contact surface of the resistive contact and the opposite contact through only the fuse element. In both cases, overcurrent protection is provided.
Selon un deuxième mode de réalisation, un desdits contacts extrémaux, dit contact résistif, peut comporter une première et une deuxième surfaces de contact et ledit élément résistif peut être réalisé par une desdites surfaces de contact, dite première surface de contact. According to a second embodiment, one of said end contacts, said resistive contact, may comprise a first and a second contact surfaces and said resistive element may be formed by one of said contact surfaces, said first contact surface.
A cet effet, ladite première surface de contact peut être réalisée en une matière dont la résistivité électrique est supérieure à la résistivité électrique de la matière dans laquelle est réalisée la deuxième surface de contact. For this purpose, said first contact surface may be made of a material whose electrical resistivity is greater than the electrical resistivity of the material in which the second contact surface is made.
Dans ce mode de réalisation également, le courant circule à travers deux voies selon que le contact est établi d'une part, entre la première surface de contact du contact résistif et le contact opposé, en traversant la matière résistive de la première surface de contact et l'élément fusible et, d'autre part, entre la deuxième surface de contact du contact résistif et le contact opposé en traversant uniquement l'élément fusible. Dans les deux cas, la protection contre les surintensités est assurée. Selon un troisième mode de réalisation, un desdits contacts extrémaux, dit contact résistif peut comporter une première et une deuxième surfaces de contact et ladite première surface de contact peut comporter un élément résistif. In this embodiment also, the current flows through two channels depending on whether the contact is established on the one hand, between the first contact surface of the resistive contact and the opposite contact, through the resistive material of the first contact surface. and the fuse element and, secondly, between the second contact surface of the resistive contact and the opposite contact through only the fuse element. In both cases, overcurrent protection is provided. According to a third embodiment, one of said end contacts, said resistive contact may comprise a first and a second contact surfaces and said first contact surface may comprise a resistive element.
Dans ce mode de réalisation également, le courant circule à travers deux voies possibles. Lorsque le contact est établi entre la première surface de contact du contact résistif et le contact opposé, le courant circule en traversant l'élément résistif de la première surface de contact et l'élément fusible et, lorsque le contact est établi entre la deuxième surface du contact du contact résistif et le contact opposé, il traverse uniquement l'élément fusible. Dans les deux cas, la protection contre les surintensités est assurée. In this embodiment also, the current flows through two possible paths. When the contact is established between the first contact surface of the resistive contact and the opposite contact, the current flows through the resistive element of the first surface of the resistive contact. contact and the fuse element and, when the contact is established between the second surface of the contact of the resistive contact and the opposite contact, it passes through only the fuse element. In both cases, overcurrent protection is provided.
Dans les premier et troisième modes de réalisation, l'élément résistif peut être choisi parmi : une résistance électrique, un fil, un ruban, une lame, une tôle découpée, une résistance bobinée. In the first and third embodiments, the resistive element may be chosen from: an electrical resistance, a wire, a ribbon, a blade, a cut sheet, a wound resistance.
L'invention prévoit également, quel que soit le mode de réalisation, de disposer d'une cartouche fusible pouvant comporter deux éléments résistifs et dans laquelle les deux contacts extrémaux forment des contacts extrémaux résistifs. Une telle configuration permet de faciliter l'insertion correcte de la cartouche fusible dans un porte fusible car les deux contacts extrémaux sont résistifs, et il n'y a de ce fait pas de notion de sens de montage. The invention also provides, regardless of the embodiment, to have a fuse cartridge that can include two resistive elements and wherein the two end contacts form resistive end contacts. Such a configuration facilitates the correct insertion of the fuse cartridge in a fuse holder because the two end contacts are resistive, and there is therefore no concept of mounting direction.
Selon une variante de l'invention, la cartouche fusible est du type à couteaux. Dans ce cas, il peut être avantageux de positionner la première surface de contact du côté opposé aux pattes d'accrochage pour la poignée d'enlèvement ou poignée amovible de manipulation. Une telle disposition permet d'assurer le bon positionnement de la cartouche fusible dans un porte fusible, en s'assurant que le premier contact de la cartouche avec les griffes d'un porte fusible est réalisé avec la première surface de contact de la cartouche fusible. According to a variant of the invention, the fuse cartridge is of the knife type. In this case, it may be advantageous to position the first contact surface on the opposite side to the attachment tabs for the removal handle or removable handling handle. Such an arrangement makes it possible to ensure the correct positioning of the fuse cartridge in a fuse holder, by ensuring that the first contact of the cartridge with the claws of a fuse holder is made with the first contact surface of the fuse cartridge. .
Dans une autre variante, elle est du type cylindrique. In another variant, it is of the cylindrical type.
Quel que soit le mode de réalisation, la première surface de contact peut présenter une superficie faible en regard de celle de la deuxième surface de contact. En effet, cette première surface est destinée à entre en contact électrique uniquement lors de la mise en place de la cartouche fusible, à savoir temporairement. D'un autre côté, la deuxième surface de contact est celle qui est sollicitée lors de l'utilisation dite classique de la cartouche fusible, c'est-à-dire lorsque le courant traverse uniquement l'élément fusible, et il est donc indispensable que le contact électrique se fasse correctement au niveau de la deuxième surface de contact. Whatever the embodiment, the first contact surface may have a small area opposite that of the second contact surface. Indeed, this first surface is intended to come into electrical contact only during the introduction of the fuse cartridge, namely temporarily. On the other hand, the second contact surface is that which is solicited during the so-called conventional use of the fuse cartridge, that is to say when the current flows only through the fuse element, and it is therefore essential that the electrical contact is correctly made at the level of the second contact surface.
D'autres buts, caractéristiques et avantages de l'invention apparaîtront à la lecture de la description suivante qui se réfère aux figures annexées représentant des modes de réalisation préférentiels de l'invention, donnés uniquement à titre d'exemples non limitatifs, et dans lesquelles : la figure 1 est une vue en élévation d'une cartouche fusible selon un premier mode de réalisation, la figure 2 est une vue représentant schématiquement la cartouche fusible illustrée à la figure 1, la figure 3 est une vue schématique d'une cartouche fusible selon le deuxième mode de réalisation, la figure 4 est une vue schématique d'une cartouche fusible selon le troisième mode de réalisation, la figure 5 est une vue schématique d'une cartouche fusible comportant deux éléments résistifs, les figures 6A à 6C représentent les étapes d'insertion de la cartouche fusible des figures 1 à 2 dans les griffes d'un porte-fusible, et les figures 7 A à 7C représentent les étapes d'insertion de la cartouche fusible de la figure 5 dans les griffes d'un porte-fusible. Other objects, features and advantages of the invention will appear on reading the following description which refers to the appended figures representing preferred embodiments of the invention, given solely by way of non-limiting examples, and in which: : Figure 1 is an elevational view of a fuse cartridge according to a first embodiment, Figure 2 is a view schematically showing the fuse cartridge illustrated in Figure 1, Figure 3 is a schematic view of a fuse cartridge according to the second embodiment, FIG. 4 is a schematic view of a fuse cartridge according to the third embodiment, FIG. 5 is a schematic view of a fuse cartridge comprising two resistive elements, FIGS. 6A to 6C represent the stages. insertion of the fuse cartridge of Figures 1 to 2 in the claws of a fuse holder, and Figures 7A to 7C show the steps of insertion of the fuse cartridge of Figure 5 in the claws of a door -fuse.
Les figures 1 et 2 représentent schématiquement une cartouche fusible 1 selon un premier mode de réalisation de l'invention. Elle comporte une enveloppe 4 intégrant d'une part, un élément fusible 5 qui fond lors de l'apparition d'une surintensité pour ouvrir le circuit dans lequel il est monté et, d'autre part, un élément résistif 6. Cet élément résistif 6 a pour but d'assurer la fonction de limitation de courant dans le circuit concerné, afin de fournir une protection lors de la fermeture du circuit par la cartouche fusible 1. Figures 1 and 2 show schematically a fuse cartridge 1 according to a first embodiment of the invention. It comprises an envelope 4 integrating on the one hand, a fuse element 5 which melts when an overcurrent occurs to open the circuit in which it is mounted and, on the other hand, a resistive element 6. This resistive element 6 is intended to provide the current limiting function in the circuit concerned, in order to provide protection when the circuit is closed by the fuse cartridge 1.
Pour ce faire, un des contacts extrémaux 2, 3 de la cartouche fusible 1 comporte deux surfaces de contact 7, 8 distinctes, désignées comme étant une première surface de contact 7 et une deuxième surface de contact 8. La deuxième surface de contact 8 est reliée au contact extrémal opposé 3 par l'élément fusible 5. Dans cet exemple de réalisation, les contacts extrémaux 2, 3 de la cartouche fusible 1 sont sous la forme de couteaux parallélépipédiques et la première surface de contact 7 est positionnée du côté opposé aux pattes d'accrochage 13 pour la poignée d'enlèvement. L'élément résistif 6 est monté en série entre la première surface de contact 7 et l'élément fusible 5, il s'agit dans cet exemple d'un fil résistif réalisé en aluminium. Ainsi, lorsqu'un porte-fusible ferme un circuit électrique avec la première surface de contact 7 et la surface opposée 3, le courant circule en série dans l'élément résistif 6 et l'élément fusible 5. Le courant dans le circuit est de ce fait réduit, de sorte que le porte-fusible assure, en plus de sa fonction de protection traditionnelle de coupure en cas de surintensité par l'intermédiaire de l'élément fusible 5, une protection complémentaire de limitation de courant. To do this, one of the end contacts 2, 3 of the fuse cartridge 1 comprises two distinct contact surfaces 7, 8, designated as being a first contact surface 7 and a second contact surface 8. The second contact surface 8 is connected to the opposite end contact 3 by the fuse element 5. In this embodiment, the end contacts 2, 3 of the fuse cartridge 1 are in the form of parallelepipedic knives and the first contact surface 7 is positioned on the opposite side to the latching lugs 13 for the removal handle. The resistive element 6 is connected in series between the first contact surface 7 and the fuse element 5, it is in this example a resistive wire made of aluminum. Thus, when a fuse carrier closes an electrical circuit with the first contact surface 7 and the opposite surface 3, the current flows in series in the resistive element 6 and the fuse element 5. The current in the circuit is this fact reduces, so that the fuse holder provides, in addition to its traditional protection function of cut-off in the event of overcurrent via the fuse element 5, complementary current limiting protection.
D'autre part, lorsque le porte-fusible 1 ferme un circuit électrique avec la deuxième surface de contact 8 et la surface opposée 3, le courant circule uniquement à travers l'élément fusible 5, de manière traditionnelle. Ainsi, avantageusement, la cartouche fusible 1 protège toujours le circuit contre les surintensités, quelle que soit la première ou la deuxième surface 7, 8 du contact extrémal résistif 2 qui ferme le circuit, c'est-à-dire quelle que soit la position de la cartouche fusible 1 dans un porte fusible. On the other hand, when the fuse holder 1 closes an electrical circuit with the second contact surface 8 and the opposite surface 3, the current flows only through the fuse element 5, in a traditional manner. Thus, advantageously, the fuse cartridge 1 always protects the circuit against overcurrents, whatever the first or the second surface 7, 8 of the resistive end contact 2 which closes the circuit, that is to say whatever the position fuse cartridge 1 in a fuse holder.
De préférence, les première et deuxième surfaces de contact 7, 8 sont isolées l'une de l'autre électriquement, par exemple par une couche 12 d'air ou de matière électriquement isolante, telle qu'une matière céramique, telle que de la stéatite, par exemple, du verre, ou une matière synthétique, comme c'est le cas dans l'exemple illustré. Preferably, the first and second contact surfaces 7, 8 are electrically insulated from each other, for example by a layer 12 of air or electrically insulating material, such as a ceramic material, such as steatite, for example, glass, or a synthetic material, as is the case in the example illustrated.
La première surface de contact 7 présente dans cet exemple une superficie qui correspond à la moitié de celle de la deuxième surface de contact 8. Cette première surface de contact 7 est celle qui est destinée à être la première à venir en contact avec les griffes d'un porte- fusible lors de la mise en place de la cartouche fusible 1. La deuxième surface de contact 8 est la surface qui est en contact avec les griffes du porte-fusible lorsque la cartouche fusible 1 est dans sa position montée. The first contact surface 7 has in this example an area that corresponds to half that of the second contact surface 8. This first contact surface 7 is the one that is intended to be the first to come into contact with the claws of the A fuse holder when placing the fuse cartridge 1. The second contact surface 8 is the surface which is in contact with the claws of the fuse holder when the fuse cartridge 1 is in its mounted position.
La figure 3 représente une cartouche fusible 10 selon un second mode de réalisation de l'invention dans laquelle une partie d'un contact extrémal 20, forme l'élément résistif 16. Le contact extrémal résistif 20 comporte ainsi une première surface de contact 7 qui forme cet élément résistif 16 et qui est réalisé en une matière résistive, telle que du carbone et une deuxième surface de contact 8 réalisée en une matière électriquement conductrice, telle que de l'aluminium, du bronze, du cuivre ou du laiton, par exemple. Un élément conducteur 14 relie électriquement la première surface de contact 7 à l'élément fusible 5. La protection est identique à celle décrite en regard du premier mode de réalisation. Ainsi, lorsque le circuit est fermé sur la première surface de contact 16 et le contact opposé 3, le courant traverse cette première surface résistive 16 et l'élément fusible 5. Le courant est réduit et la protection contre les surintensités est assurée. Lorsque le circuit est fermé sur la deuxième surface de contact 8, le courant traverse l'élément fusible 5 de sorte que la protection contre les surintensités est toujours assurée. FIG. 3 shows a fusible cartridge 10 according to a second embodiment of the invention in which a part of an end contact 20 forms the resistive element 16. The resistive end-contact 20 thus comprises a first contact surface 7 which form this resistive element 16 and which is made of a resistive material, such as carbon and a second contact surface 8 made of an electrically conductive material, such as aluminum, bronze, copper or brass, for example . A conductive element 14 electrically connects the first contact surface 7 to the fuse element 5. The protection is identical to that described with respect to the first embodiment. Thus, when the circuit is closed on the first contact surface 16 and the opposite contact 3, the current flows through this first resistive surface 16 and the fuse element 5. The current is reduced and the protection against overcurrent is ensured. When the circuit is closed on the second contact surface 8, the current flows through the fuse element 5 so that overcurrent protection is always ensured.
La figure 4 représente une cartouche fusible 100 selon un troisième mode de réalisation de l'invention. Cette cartouche fusible 100 diffère de celle de la figure 3 par le fait que l'élément résistif 6 est un élément supplémentaire intégré dans le contact extrémal résistif 20', au niveau de la première surface de contact 7. L'élément résistif 6 peut être une résistance électrique, un fil, un ruban, une lame, une tôle découpée ou une résistance bobinée, par exemple. Cette configuration appelle les mêmes avantages que ceux indiqués en regard des modes de réalisation précédents. FIG. 4 shows a fuse cartridge 100 according to a third embodiment of the invention. This fuse cartridge 100 differs from that of FIG. 3 in that the resistive element 6 is an additional element integrated in the resistive end contact 20 ', at the level of the first contact surface 7. The resistive element 6 can be an electrical resistor, a wire, a ribbon, a blade, a cut sheet metal or a wound resistance, for example. This configuration calls for the same advantages as those indicated with respect to the preceding embodiments.
La figure 5 représente une cartouche fusible 110 selon un quatrième mode de réalisation de l'invention dans laquelle les deux contacts extrémaux 2, 2' sont des contacts résistifs, c'est- à-dire qu'ils sont tous les deux liés à un élément résistif 6, 6' . A cet effet, les deux contacts extrémaux 2 et 2' comportent chacun une première surface de contact 7, 7' et une deuxième surface de contact 8, 8' isolées électriquement l'une de l'autre par une matière isolante 12, 12' et les éléments résistifs 6 et 6' sont reliés électriquement d'une part à l'élément fusible 5 et, d'autre part, à la première surface de contact 7, 7' correspondante. FIG. 5 shows a fuse cartridge 110 according to a fourth embodiment of the invention in which the two end contacts 2, 2 'are resistive contacts, that is to say that they are both connected to a resistive element 6, 6 '. For this purpose, the two end contacts 2 and 2 'each comprise a first contact surface 7, 7' and a second contact surface 8, 8 'electrically insulated from one another by an insulating material 12, 12' and the resistive elements 6 and 6 'are electrically connected on the one hand to the fuse element 5 and on the other hand to the corresponding first contact surface 7, 7'.
Ce doublement est transposable dans les autres modes représentés. En plus des avantages cités en regards des autres modes, ce mode de réalisation présente l'avantage de faciliter la mise en place d'une cartouche fusible 110 dans un porte fusible en supprimant la notion de sens, les deux contacts extrémaux étant liés à un élément résistif 5. Les figures 6A à 6C représentent les différentes étapes de montage d'une cartouche fusible 1 selon le premier mode de réalisation dans un porte-fusible. La cartouche 1 y est représentée sans son enveloppe 4. La figure 6A représente la cartouche fusible 1 avant son insertion dans le porte-fusible. La figure 6B représente le premier contact entre la cartouche fusible 1 et les griffes 9 et 11 du porte-fusible. Ce premier contact est réalisé, d'une part, entre la première surface de contact 7 du contact résistif 2 et une griffe 9 et, d'autre part, entre le contact opposé 3 et une l'autre griffe 11 du porte-fusible. Le courant circule ainsi dans le porte-fusible depuis la griffe 9, puis dans la première surface de contact 7, puis dans l'élément résistif 6, puis dans l'élément fusible 5, puis dans le contact opposé 3 puis dans la griffe 11, ou inversement. En d'autres termes, lorsque la cartouche fusible 1 est ainsi positionnée au cours de son insertion, le circuit correspondant est à la fois protégé des surintensités et limité en courant. This doubling is transposable in the other modes represented. In addition to the advantages mentioned with regard to other modes, this embodiment has the advantage of facilitating the installation of a fuse cartridge 110 in a fuse holder by eliminating the notion of sense, the two extremal contacts being linked to a resistive element 5. FIGS. 6A to 6C show the various steps of mounting a fuse cartridge 1 according to the first embodiment in a fuse holder. The cartridge 1 is shown without its envelope 4. Figure 6A shows the fuse cartridge 1 before insertion into the fuse holder. Figure 6B shows the first contact between the fuse cartridge 1 and the claws 9 and 11 of the fuse holder. This first contact is made, on the one hand, between the first contact surface 7 of the resistive contact 2 and a claw 9 and, on the other hand, between the opposite contact 3 and the other claw 11 of the fuse holder. The current flows in this way fuse holder from the claw 9, then in the first contact surface 7, then in the resistive element 6, then in the fuse element 5, then in the opposite contact 3 and then in the claw 11, or vice versa. In other words, when the fuse cartridge 1 is thus positioned during its insertion, the corresponding circuit is both protected against overcurrent and limited in current.
La figure 6C représente la cartouche fusible 1 en position montée dans le porte-fusible 11. Dans cette position la griffe 9 est en contact avec la première surface de contact 7 et la deuxième surface de contact 8 du contact résistif 2. Le courant traverse le circuit à partir de la deuxième surface de contact 8 car le circuit y est moins résistif. Le courant circule ainsi dans le porte-fusible depuis la griffe 9, puis dans la deuxième surface de contact 8 puis dans l'élément fusible 5, puis dans le contact opposé 3 puis dans la griffe 10, ou inversement. En d'autres termes, lorsque la cartouche fusible 1 est en position montée ou opérationnelle dans un porte-fusible, le circuit correspondant est protégé des surintensités, selon un fonctionnement classique. Les figures 7A à 7C correspondent à la mise en place d'une cartouche fusible 110 représentée sans son enveloppe 4 dans le même porte-fusible que celui illustré dans les figures 6A à 6C. La mise en place est la même. La différence consiste en ce que dans la position illustrée dans la figure 7B, le circuit se ferme sur les deux premières surfaces de contact 7, 7' de la cartouche fusible 110, et le courant traverse deux éléments résistifs 6, 6' au lieu d'un seul dans la cartouche fusible 1 des figures 6A à 6C. FIG. 6C shows the fuse cartridge 1 in position mounted in the fuse holder 11. In this position the claw 9 is in contact with the first contact surface 7 and the second contact surface 8 of the resistive contact 2. The current flows through the circuit from the second contact surface 8 because the circuit is less resistive. The current thus flows into the fuse holder from the claw 9, then into the second contact surface 8 and then into the fuse element 5, then into the opposite contact 3 and then into the claw 10, or vice versa. In other words, when the fuse cartridge 1 is in the mounted position or operating in a fuse holder, the corresponding circuit is protected against overcurrent, according to a conventional operation. Figures 7A to 7C correspond to the establishment of a fuse cartridge 110 shown without its envelope 4 in the same fuse holder as that shown in Figures 6A to 6C. The set up is the same. The difference is that in the position illustrated in Figure 7B, the circuit closes on the first two contact surfaces 7, 7 'of the fuse cartridge 110, and the current passes through two resistive elements 6, 6' instead of only one in the fuse cartridge 1 of FIGS. 6A to 6C.
La cartouche fusible 1, 10, 100 ,110 selon l'invention permet ainsi, en un seul dispositif, d'une part, de réduire l'intensité du courant et donc limiter le courant d'appel lors de l'insertion de la cartouche fusible 1, 10, 100 ,110 tout en disposant de la protection classique contre les surintensités et, d'autre part, de disposer de ladite protection classique lorsque la cartouche fusible est dans sa position opérationnelle dans le porte fusible. The fuse cartridge 1, 10, 100, 110 according to the invention thus makes it possible, in a single device, on the one hand, to reduce the intensity of the current and thus limit the inrush current when the cartridge is inserted. fuse 1, 10, 100, 110 while having the conventional protection against overcurrent and, secondly, to have said conventional protection when the fuse cartridge is in its operative position in the fuse holder.

Claims

REVENDICATIONS
1. Cartouche fusible (1, 10, 100, 110) comportant un élément fusible (5), une enveloppe (4) renfermant ledit élément fusible (5) et deux contacts extrémaux (2, 2', 20, 3) disposés de part et d'autre de ladite enveloppe (4), ladite cartouche fusible (1, 10, 100, 110) étant caractérisée en ce qu'elle comporte au moins un élément résistif (6, 6', 16) monté en série avec ledit élément fusible (5), ledit élément résistif (6, 6') étant disposé dans l'enveloppe (4) et étant monté en série entre l'un desdits contacts extrémaux (2, 2', 3), dit contact résistif (2, 2'), et l'élément fusible (5), caractérisé en ce que ledit contact résistif (2, 2') comporte une première et une deuxième surfaces de contact (7, 7' ; 8, 8') isolées électriquement l'une de l'autre, en ce que l'élément résistif (6, 6') est relié électriquement à la première surface de contact (7, 7') destinée à entrer en contact électrique uniquement lors de la mise en place de la cartouche fusible, à savoir temporairement, et en ce que l'élément fusible (5) relie électriquement la deuxième surface de contact (8, 8') et le contact extrémal opposé (3, 2'). Fuse cartridge (1, 10, 100, 110) comprising a fuse element (5), an envelope (4) enclosing said fuse element (5) and two end contacts (2, 2 ', 20, 3) arranged and other of said envelope (4), said fuse cartridge (1, 10, 100, 110) being characterized in that it comprises at least one resistive element (6, 6 ', 16) connected in series with said element fuse (5), said resistive element (6, 6 ') being arranged in the casing (4) and being connected in series between one of said end contacts (2, 2', 3), said resistive contact (2, 2 '), and the fuse element (5), characterized in that said resistive contact (2, 2') has first and second electrically isolated contact surfaces (7, 7 ', 8, 8'). one of the other, in that the resistive element (6, 6 ') is electrically connected to the first contact surface (7, 7') intended to come into electrical contact only when the cartridge is put in place fuse, namely temporarily, and in that the fuse element (5) electrically connects the second contact surface (8, 8 ') and the opposite end contact (3, 2').
2. Cartouche fusible, selon la revendication 1, caractérisée en ce qu'un desdits contacts extrémaux, dit contact résistif (20), comporte une première et une deuxième surfaces de contact (7, 8) et en ce que ledit élément résistif (16) est réalisé par une desdites surfaces de contact, dite première surface de contact (7). 2. Fuse cartridge according to claim 1, characterized in that one of said end contacts, said resistive contact (20), comprises a first and a second contact surface (7, 8) and in that said resistive element (16) ) is formed by one of said contact surfaces, said first contact surface (7).
3. Cartouche fusible, selon la revendication 2, caractérisée en ce que ladite première surface de contact (7) est réalisée en une matière dont la résistivité électrique est supérieure à la résistivité électrique de la matière dans laquelle est réalisée la deuxième surface de contact (8). 3. Fusible cartridge according to claim 2, characterized in that said first contact surface (7) is made of a material whose electrical resistivity is greater than the electrical resistivity of the material in which the second contact surface is made ( 8).
4. Cartouche fusible, selon la revendication 1, caractérisée en ce qu'un desdits contacts extrémaux, dit contact résistif (20'), comporte une première et une deuxième surfaces de contact (7, 8) et en ce que ladite première surface de contact (7) comporte un élément résistif (6). 4. Fusible cartridge according to claim 1, characterized in that one of said end contacts, said resistive contact (20 '), comprises a first and a second contact surface (7, 8) and in that said first surface of contact (7) has a resistive element (6).
5. Cartouche fusible, selon l'une quelconque des revendications 1 et 4, caractérisée en ce que l'élément résistif (6, 6') est choisi parmi : une résistance électrique, un fil, un ruban, une lame, une tôle découpée, une résistance bobinée. 5. Fuse cartridge according to any one of claims 1 and 4, characterized in that the resistive element (6, 6 ') is selected from: an electrical resistance, a wire, a ribbon, a blade, a cut sheet metal , a wound resistance.
6. Cartouche fusible, selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte deux éléments résistifs (6, 6') et en ce que les deux contacts extrémaux forment des contacts extrémaux résistifs (2, 2'). 6. Fuse cartridge according to any one of the preceding claims, characterized in that it comprises two resistive elements (6, 6 ') and in that the two end contacts form resistive end contacts (2, 2').
7. Cartouche fusible, selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle est du type à couteaux. 7. fusible cartridge according to any one of the preceding claims, characterized in that it is of the knife type.
8. Cartouche fusible, selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle est du type cylindrique. 8. fusible cartridge according to any one of the preceding claims, characterized in that it is of the cylindrical type.
EP17731200.6A 2016-05-19 2017-05-16 Fuse cartridge Active EP3459102B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17731200T PL3459102T3 (en) 2016-05-19 2017-05-16 Fuse cartridge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1654480A FR3051594B1 (en) 2016-05-19 2016-05-19 FUSE CARTRIDGE
PCT/FR2017/051177 WO2017198942A1 (en) 2016-05-19 2017-05-16 Fuse cartridge

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EP3459102A1 true EP3459102A1 (en) 2019-03-27
EP3459102B1 EP3459102B1 (en) 2020-08-26

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FR (1) FR3051594B1 (en)
PL (1) PL3459102T3 (en)
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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6230278Y2 (en) * 1978-08-24 1987-08-04
DE3411445A1 (en) * 1984-02-06 1985-08-08 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau HIGH VOLTAGE SWITCH
US4937699A (en) * 1988-03-23 1990-06-26 Illinois Tool Works, Inc. Frequency dependent fuse for a telephone circuit or the like
US20030102947A1 (en) * 2001-12-05 2003-06-05 Joseph Ho Multipurpose input device
JP2005251702A (en) * 2004-03-08 2005-09-15 Ntt Power & Building Facilities Inc Fuse with rush current suppression function and current distribution device using this
US8076751B2 (en) * 2008-04-21 2011-12-13 Littelfuse, Inc. Circuit protection device including resistor and fuse element
JP5411581B2 (en) * 2009-06-01 2014-02-12 日本電信電話株式会社 Current distribution device

Also Published As

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EP3459102B1 (en) 2020-08-26
FR3051594A1 (en) 2017-11-24
WO2017198942A1 (en) 2017-11-23
FR3051594B1 (en) 2020-04-24
PL3459102T3 (en) 2021-02-08

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