EP3261105B1 - Elektrisches gerät zum leitungsschutz - Google Patents

Elektrisches gerät zum leitungsschutz Download PDF

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Publication number
EP3261105B1
EP3261105B1 EP17177474.8A EP17177474A EP3261105B1 EP 3261105 B1 EP3261105 B1 EP 3261105B1 EP 17177474 A EP17177474 A EP 17177474A EP 3261105 B1 EP3261105 B1 EP 3261105B1
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EP
European Patent Office
Prior art keywords
contact
mobile
line protection
electric line
mobile contact
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EP17177474.8A
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English (en)
French (fr)
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EP3261105A1 (de
Inventor
Guillaume LACOMBE
Grégrory SCHMITT
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Hager Electro SAS
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Hager Electro SAS
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/101—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening with increasing of contact pressure by electrodynamic forces before opening

Definitions

  • the invention relates to an electrical line protection device of the differential switch type (RCCB).
  • RRCB differential switch type
  • This type of device is designed in particular to cut and establish current levels generally between 16 and 125 amperes.
  • a standard for this type of device states that it must be capable of breaking a maximum differential short-circuit current equal to ten times the rated current In.
  • a differential short-circuit current is a current that flows only through only one pole at a time. This current systematically triggers the lock of the device, because there is an intensity imbalance detected by a torus.
  • a balanced short-circuit current is a current that flows through all the poles of the same device at the same time. This type of current can, by the action of the repulsion forces, slightly open the contacts, without triggering the lock.
  • the electrical apparatus according to the invention sees these strong short-circuit currents balanced, and must support them without internal damage.
  • one of the solutions currently used consists of using tungsten to form the tablet of the moving contact. It may be specifically a tungsten-silver mixture (AgW) or a mixture of tungsten carbide-silver (AgCW). Tungsten correctly supports the effects of repulsion in terms of wear and gluing. However, it increases the risk of thermal runaway, that is to say overheating, which may melt the device. Therefore, with tungsten, it is generally necessary to use materials such as thermosets to make the components that carry them. fixed and mobile contacts, because they better support the heat and can contain the effects of a thermal runaway. However, this type of material requires a lot of caution when used in an industrial process.
  • tungsten is a poorly aged material, since it tends to oxidize, making the electrical connection defective between the pellets.
  • Another solution is based on increasing the contact force between the fixed contact and the movable contact, when closing the contacts.
  • This contact force is generally effected by means of a spring.
  • it is customary to choose a spring with a higher force.
  • the greater the contact force the greater the current through the contact point must be high to separate the movable contact of the fixed contact.
  • This solution however has the disadvantage of increasing consequently the arming force of the device to go from the OFF position (opening of the contacts) to the ON position (closing of the contacts), and requires a review of the ergonomics of the device. product.
  • This increase of the arming force to increase the contact force can also cause a creep effect of some parts over time and impair the operation of the device.
  • the publication FR 2 905 795 A1 discloses a contact device comprising first and second conductive members movable relative to each other, the first conductive element being fixed and the second conductive element being movable. Two pairs of contacts are provided on the first and second conductive elements, so as to establish a first and a second contact area, when two contacts come into contact. Furthermore, a current supply member, formed by a flexible conductor of the braid type, is electrically connected to the second conductive element to induce magnetic forces tending to keep the second movable conductive member in contact with the first fixed conductive element. In this device, the current supply member is connected to the second conductive element at the contact pair which is located near the mechanism for exerting a contact pressure force.
  • the publication BE 667 601 A discloses a contact device which comprises a fixed contact and a movable contact provided with a pivoting arm movable in rotation about an axis.
  • a flexible conductor in the form of a braid is connected to a lower end of the arm, which is opposite the end being able to form a contact zone between the movable contact and the fixed contact, which makes it possible to induce an electrodynamic force of attraction tending to increase the contact pressure.
  • the flexible conductor is connected to the lower end of the arm, opposite to the end forming contact point, and near the yoke and the tilting support.
  • the present invention aims to overcome the various disadvantages mentioned above, by means of an electrical apparatus of line protection, able to withstand balanced short-circuit currents (> 10 x In) and thus managed by a neighboring circuit breaker, by preventing the electrodynamic repulsion of the contacts without increasing the arming force of the device.
  • This device is characterized, in principal, in that the movable contact has a first proximal end of the contact carrier and a second distal end of the contact carrier, said conductor being connected at the second end of the movable contact and remotely from the pivot point.
  • the nominal contact force F1 is much lower than the repulsion forces Fr, and is not sufficient on its own to keep the contacts closed in the event of a balanced short circuit.
  • the main idea of this invention is to provide an additional contact force F2, which keeps the contacts closed, even if a short-circuit current greater than ten times the nominal current.
  • This additional contact force F2 is independent of the nominal contact force F1. This allows to maintain a suitable arming force, that is to say a manual operation of the controller where the hard point is passed by exerting a standard pressure by the user.
  • the additional contact force is therefore induced between the movable contact and the flexible conductor, the movable contact being electrically connected to said connection terminal via a flexible conductor of the braid type.
  • the idea is to connect the conductor at the end of the moving contact, that is to say as far as possible from the pivot point, in order to have a greater lever arm possible.
  • the magnetic field created by the driver when traversed by a strong short-circuit current generates a force F2 'which is applied to the contact mobile at the connection with the driver, and pushing the movable contact so as to rotate it in a couple C2.
  • F2 ' which is applied to the contact mobile at the connection with the driver, and pushing the movable contact so as to rotate it in a couple C2.
  • the elastic means creating the force F1 ' is, meanwhile, located above the pivot point, so on the other side of the protrusion and the connecting area of the driver.
  • the elastic means exerts a pressure on the first face of the movable contact.
  • the generated torque C1 thus rotates in the same direction as the pair C2, that is to say in the opposite direction of the torque Cr.
  • the objective is therefore that the sum of the couples C1 and C2 is greater than or equal to the torque Cr, in order to keep the contacts closed in the event of a balanced short-circuit.
  • the movable contact has an elongated section between the protuberance and the second end. The longer this section is, the longer the lever relative to the C2 pair will be long.
  • the ratio between the distance from the pivot point to the second end of the connection to the conductor and the distance from the pivot point to the point of contact is greater than 2.
  • the greater this ratio the greater the lever arm relative to the C2 pair is important, and the more force F2 will be able to counter the repulsion forces Fr.
  • This ratio is optimized at best according to the size of the device.
  • the apparatus is conventionally delimited by a housing, the distance between the pivot point and the second end of connection to the conductor being limited by the size of the housing.
  • the mobile contact must be integrated in the volume defined by the housing. Its pivot point and its point of contact being defined within the housing by the location of the lock, only its length can be modified, and is limited by geometric considerations relating to the housing.
  • the length of the flexible conductor is limited so that it does not diffuse too much heat within the device.
  • the elongation of the movable contact and its connection to the conductor at its second end consist of geometric changes easily achievable from an industrial point of view. It is therefore a technical solution that has the advantage of being simple to implement.
  • said protuberances protruding mobile and fixed contacts each consist of a rivet.
  • the additional forces F2 make it possible to counter the repulsion forces Fr.
  • the conductor, the moving contact and the fixed contact pass through this important balanced short-circuit current without causing any opening of the circuits. contacts, and therefore electric arc that should be able to support.
  • simple rivets can be fixed on the movable contact, as well as on the fixed contact. This is not only an economical solution, but also a guarantee of quality, compared to pellet-shaped protuberances whose specific surface is welded to the mobile / fixed contact. Indeed, in the case of pellets, there is a risk of being wrong face during welding. This risk is present, whether it is an automatic or manual process. If the chip is soldered to the wrong side, the electrical device is defective.
  • said rivet is composed of an alloy containing silver and tin, thus free of carbon or tungsten.
  • These materials age well, have a very good longevity, which allows the device to operate longer, compared to the devices of the prior art.
  • This type of material is healthy, compared to pellets that are often made of tungsten, which is a less robust material in the long term.
  • the protuberances of the invention could very well consist of pellets, both silver-tin alloy tungsten for example.
  • the apparatus comprises means of suction of the electric arc created between the fixed and movable contacts during the opening of the contacts.
  • said electric arc suction means consist of a blow plate surrounding the movable contact from the point of contact to the second end of the movable contact.
  • This sheet makes it possible to direct the electric arc towards the second end of the movable contact, that is to say at a distance from the lock and the contact-holder which constitutes a fragile and not very tight zone. This redirection makes it possible to better absorb the pollution of the electric arc, and to avoid damage within the device.
  • the blowing plate may have a U-shape and may comprise a first branch and a second branch substantially parallel to each other and facing one another, and which extend from a base forming part of the blow plate.
  • said flexible conductor has a rigid end connecting to the movable contact.
  • This rigid end makes it possible to better weld the conductor on the moving contact, and to have a robust connection.
  • This rigid end must however remain as small as possible, in order to leave a maximum of flexibility to the driver, who must be able to deform during the passage of a high short circuit current.
  • said flexible conductor comprises a deformable section depending on the position of the movable contact relative to the fixed contact. This deformable section starts as low as possible, at the second end of the movable contact, in order to obtain the longest lever arm between the pivot point and the place where the force F2 exerts itself (ie ie at the beginning of the deformable section).
  • the conductor preferably consists of a flat braid.
  • the deformable section is curved and comprises a first portion which extends from the second rigid end of the braid and is arranged facing the second side face of the movable contact and a second portion. which extends the first portion and extends to the first rigid end.
  • said deformable section is curved and extends, from the second end, in the extension of the second end of the movable contact and opposite the movable contact.
  • an electrical line protection apparatus of the differential switch type, is delimited by a housing 21 in which there is an arrangement of parts, including in particular at least one movable contact 1 and a fixed contact 2.
  • It can be for example a four-pole device, with three phases and a neutral.
  • the device When the fixed 2 and mobile 1 contacts are closed, the device is in the ON position. Conversely, when the fixed 2 and mobile 1 contacts are open, the device is in the OFF position.
  • the apparatus mainly comprises a cut-off device and a triggering device. We will not detail the operation and arrangement of these devices, because they are not the subject of the invention.
  • Each of the contacts 1,2 has a protuberance consisting of a rivet 8,9 in the example of the figure 1 , or in a pellet 8 ', 9' in the examples of figures 2 and 3 .
  • a protuberance consisting of a rivet 8,9 in the example of the figure 1 , or in a pellet 8 ', 9' in the examples of figures 2 and 3 .
  • the fixed contact 2 is embedded in a support 19 fixed with respect to the housing 21.
  • the movable contact 1 is in turn pivotally connected around a contact carrier 18.
  • These two contacts 1,2 each consist of a flat iron, with or without fold.
  • the movable contact 1 has a first end 10, a second end 11, a first lateral face 13 disposed opposite the fixed contact 2, and a second opposite lateral face 14.
  • a spring 5 is disposed between the movable contact 1 and the contact carrier 18.
  • This spring 5 here consists of a torsion spring 5 with two end arms 5a, 5b.
  • An end arm 5a bears on the first face 13 of the movable contact 1, while the other end arm 5b bears on the contact carrier 18.
  • the movable contact 1 rotates about a pivot point 6 located below the spring 5 and above the pellet 8 '. This rotational movement allows the moving contact 1 to be taken away from the fixed contact 2 in the OFF position of the device or against the fixed contact 2 in the ON position of the device.
  • the mobile contact 1 is connected to a connection terminal 4 of the apparatus, via a flexible braid 3, a rigid first end 16 of which is soldered to the terminal 4 and whose second rigid end 15 is soldered to the moving contact 1.
  • the second rigid end 15 is welded to the moving contact 1 on the side of the second lateral face 14 of the movable contact 1 in at least one welding point S ( figures 2 and 3
  • This braid 3 comprises a deformable central section 17 delimited by the two rigid ends 16, 15.
  • connection terminal 4 The current flows in the connection terminal 4, then in the braid 3, then in the moving contact 1, and finally in the fixed contact 2 if the contacts are closed.
  • the trigger device detects this anomaly and causes the opening of the contacts 1,2 via a lock and the contact carrier 18. It this is a case of usual operation of the differential switch.
  • the apparatus according to the invention is provided with a movable contact 1 with a portion 12 extended between the point of contact 7 and the second end 11, and with an electrical connection to the braid 3 which is is located exactly at the second end 11 on the side of its second side face 14. More particularly, the weld point S is located at the interface between the second end 11 of the movable contact 1, the side of the second side lateral 14 of the movable contact 1, and the second rigid end 15 of the braid 3.
  • the braid 3 is soldered away from the pivot point 6, and on the other hand, the contact point 7 is close to the pivot point 6.
  • pivot point 6 located near the point of contact 7 is meant a pivot point 6 located closer to the point of contact 7 than to the second end 11 or the weld point S, as illustrated by FIGS. figures 2 and 3 .
  • a conductor 3 connected remotely from the pivot point 6 is meant a weld point S closer to the point of contact 7 than the pivot point 6, as illustrated by FIGS. figures 2 and 3 .
  • the first arm 5a of the spring 5 bearing on the first side face 13 of the movable contact 1 creates a force F1 'which is applied at the first end 10 of the movable contact 1.
  • This force F1' is therefore applied above of pivot point 6 (considering the orientation of the pieces presented on the figures 1 , 2 and 3 ), and causes the pivoting of the movable contact 1 towards the fixed contact 2, that is to say in the counterclockwise direction on the figures 2 and 3 .
  • the rotation of the movable contact 1 is stopped by the fixed contact 2 which serves as a stop.
  • the spring 5 still exerting pressure on the movable contact 1, there is therefore a force F1 exerted on the fixed contact 2 from the point of contact 7.
  • This force F1 is therefore related to the force F1 '. It generates a torque C1 tending to rotate the movable contact 1 in the direction of the fixed contact 2, that is to say in the counterclockwise direction on the figure 2 .
  • This force F1 makes it possible to keep the contacts closed during a nominal current.
  • the braid 3 When the braid 3 is traversed by a current, it deforms and generates a magnetic field. By welding the braid 3 to the second end 11 of the moving contact 1, the short-circuit current passes from the braid 3 to the second end 11 of the moving contact 1. In this zone, the magnetic field created by the braid 3 and associated at the short-circuit current, generates an additional force F2 'which generates a torque C2 tending to rotate the movable contact 1 by bringing it closer to the fixed contact 2, that is to say in the counterclockwise direction on the figure 2 . Brought back to the point of contact, this pair D2 generates a force F2 directed according to the force F1, and which thus adds to the force F1 to counter the forces Fr of repulsion.
  • the short-circuit current is used for the creation of a force F2 making it possible to keep the contacts 1, 2 closed.
  • the sum of the couples C1 and C2 must be greater than or equal to the torque Cr, so that there is no separation of the contacts during the passage of a high short circuit current.
  • the ratio between the lever arm corresponding to the torque Cr, that is to say the distance d1 between the pivot point 6 and the contact point 7, and the lever arm corresponding to the torque C2, that is to say the distance d2 between the pivot point 6 and the second end 11 of the movable contact 1, is greater than or equal to 2.
  • the greater this ratio the greater the C2 pair will be important compared to Cr couple and will counter the forces of repulsion Fr.
  • the distance d2 is limited by the inner wall of the housing 21 in the vicinity of the second end of the movable contact 1, as illustrated in FIG. figure 1 .
  • the second rigid end 15 of the braid 3 is as short as possible, since the force F2 originates at the start of the flexible portion 17 of the braid 3.
  • the deformable central section 17 of the braid 3 can be curved.
  • the curved central deformable section 17 may comprise a first portion 17 'which extends from the second rigid end 15 of the braid 3, and is arranged opposite the second lateral face 14 of the movable contact 1.
  • central deformable 17 may comprise a second portion 17 "which extends the first portion 17 'and extends to the first rigid end 16.
  • the first portion 17' is disposed substantially opposite the portion 12 of the contact mobile 1.
  • the deformable central section 17 has a convex shape.
  • the curved central deformable section 17 extends, from the second end 15, in the extension of the second end 11 of the movable contact 1 and opposite the moving contact 1.
  • the deformable central portion 17 has a concave shape. Indeed, the deformable central section 17 of the braid 3 and the portion 12 forms a substantially U shape. By this arrangement, the current flowing in the movable contact 1 has no influence on the deformable central section 17 of FIG. the braid 3 and thus, the force F'2 does not decrease.
  • the current passing through the braid 3 creates repulsive forces F1TT and F2TT.
  • the repulsive force F1TT contributes to increasing the force F2 'and therefore contributes to increasing the force on the point of contact 7.
  • the fixed and mobile contacts 2 1 are equipped with pellets 8 ', 9', preferably designed in an alloy comprising silver and tin, or any other silver alloy.
  • a U-shaped blow plate 20 is provided around the movable contact 1, between the protuberance (rivet 8 or pad 8 ') and the second end 11, to direct the electric arc down the housing 21, according to its orientation on the figures 1 , 2 and 3 .
  • the U-shaped blow plate 20 may comprise a first branch 20a and a second branch 20c substantially parallel to each other and facing one another, and which extend from a base 20b forming part of the blowing plate 20.
  • the first branch 20a, the base 20b, and the second branch 20c may delimit a space in which the portion 12 of the movable contact 1 is contained. More particularly, this portion 12 extends between the second end 11 and the protuberance, which preferably has the form of a rivet 8 or a pellet 8 '. Moreover, the blast plate 20 can be arranged between the connection terminal 4 and the fixed contact 2.
  • the electric arc is thus brought away from the lock and the contact carrier 18, located in fragile and poorly sealed areas.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (13)

  1. Elektrisches Gerät zum Leitungsschutz vom Typ des Differentialschalters, umfassend:
    - eine Abschaltvorrichtung, umfassend ein mechanisches Schloss, eine Auslösevorrichtung, die geeignet ist, das Schloss umzuschalten,
    - einen festen Kontakt (2) und einen beweglichen Kontakt (1), der an einem drehbaren Kontaktträger (18) befestigt ist,
    - einen Steuerhebel des beweglichen Kontakts (1), der den beweglichen Kontakt (1) in Entfernung von oder in Richtung auf den festen Kontakt (2) antreibt, wobei der Hebel mit dem Kontaktträger (18) über das mechanische Schloss, dass umgeschaltet werden kann, verbunden ist, indem das Öffnen/Schließen der Kontakte (1, 2) infolge von einem manuellen Einwirken auf den Hebel herbeigeführt wird,
    - wobei die Auslösevorrichtung geeignet ist, das Schloss der Abschaltvorrichtung umzuschalten, um die Kontakte (1, 2) im Falle des Auftretens eines Differentialkurzschlussstroms zu öffnen, und geeignet ist, die Kontakte (1, 2) im Falle des Auftretens eines Ausgleichskurzschlussstroms geschlossen zu lassen,
    wobei der bewegliche Kontakt (1) in der geschlossenen Position der Kontakte (1, 2) an einer Kontaktstelle (7) unter der Einwirkung eines elastischen Mittels (5), das zwischen dem beweglichen Kontakt (1) und dem Kontaktträger (18) angeordnet ist und eine Nennkontaktkraft (F1) erzeugt, die auf den festen Kontakt (2) angewendet wird, gegen den festen Kontakt (2) gehalten wird,
    - Mittel zum Umwandeln des Ausgleichskurzschlussstroms in eine zusätzliche Kontaktkraft (F2), die auf den festen Kontakt (2) ausgeübt wird und gemäß der Kontaktkraft (F1) gerichtet ist, wobei die Summe der Kräfte (F1 und F2) mindestens gleich den elektrodynamischen Abstoßkräften (Fr) der Kontakte ist, die durch den Ausgleichskurzschlussstrom erzeugt werden,
    - eine Anschlussklemme (4),
    wobei der bewegliche Kontakt (1) elektrisch an die Anschlussklemme (4) über einen flexiblen Leiter (3) des Typs des Geflechts angeschlossen ist, wobei die Mittel zum Umwandeln aus einer spezifischen Anordnung zwischen dem Leiter (3), dem beweglichen Kontakt (1) und dem festen Kontakt (2) bestehen,
    wobei der bewegliche Kontakt (1) ausgebildet ist, um sich einen Drehpunkt (6) zu drehen, der in der Nähe der Kontaktstelle (7) lokalisiert ist,
    wobei der bewegliche Kontakt (1) ein erstes proximales Ende (10) des Kontaktträgers (18) und ein zweites distales Ende (11) des Kontaktträgers (18) aufweist,
    wobei das elektrische Gerät zum Leitungsschutz ist dadurch gekennzeichnet, dass der Leiter (3) an dem zweiten Ende (11) des beweglichen Kontakts (1) und von dem Drehpunkt (6) entfernt angeschlossen ist,
    und dadurch, dass das Verhältnis zwischen dem Abstand (d2) des Drehpunkts (6) zu dem zweiten Ende (11) zum Anschließen an den Leiter (3) und dem Abstand (d1) des Drehpunkts (6) zu der Kontaktstelle (7) größer als 2 ist.
  2. Elektrisches Gerät zum Leitungsschutz nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass es durch ein Gehäuse (21) begrenzt ist, wobei der Abstand (d2) zwischen dem Drehpunkt (6) und dem zweiten Ende (11) zum Anschließen an den Leiter (3) durch die Außenmaße des Gehäuses (21) begrenzt ist.
  3. Elektrisches Gerät zum Leitungsschutz nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass der bewegliche Kontakt (1) aus einem flachen Eisen besteht, umfassend:
    - das erste Ende (10), das mit dem elastischen Mittel (5) zusammenwirkt,
    - eine erste Seite (13), von der aus ein Vorsprung (8, 8') hervorsteht, der geeignet ist, mit einem ähnlichen Vorsprung (9, 9') in Kontakt zu kommen, der von dem festen Kontakt (2) hervorsteht, wobei der Kontakt zwischen diesen zwei Vorsprüngen (8, 8'; 9, 9') der Kontaktstelle (7) zwischen dem festen Kontakt (2) und dem beweglichen Kontakt (1) entspricht,
    - den Drehpunkt (6), um den er sich dreht, um sich von dem festen Kontakt (2) zu entfernen oder daran anzunähern, wobei der Drehpunkt (6) zwischen dem ersten Ende (10) und dem Vorsprung (8, 8') angeordnet ist,
    - das zweite Ende (11), an dem der Leiter (3) auf einer zweiten Seite (14) befestigt ist, die der ersten Seite (13) gegenüberliegt, die den Vorsprung (8, 8') enthält.
  4. Elektrisches Gerät zum Leitungsschutz nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der bewegliche Kontakt (1) einen länglichen Abschnitt zwischen dem Vorsprung (8, 8') und dem zweiten Ende (11) aufweist.
  5. Elektrisches Gerät zum Leitungsschutz nach einem der Ansprüche 3 und 4, dadurch gekennzeichnet, dass die vorstehenden Vorsprünge (8, 9) des beweglichen (1) und festen (2) Kontakts jeweils aus einer Niete bestehen.
  6. Elektrisches Gerät zum Leitungsschutz nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Niete (8, 9) aus einer Legierung besteht, die Silber und Zinn enthält.
  7. Elektrisches Gerät zum Leitungsschutz nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es Mittel zum Absaugen des Lichtbogens aufweist, der zwischen dem festen (1) und beweglichen (2) Kontakt bei dem Öffnen der Kontakte (1, 2) erzeugt wird.
  8. Elektrisches Gerät zum Leitungsschutz nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mittel zum Absaugen des Lichtbogens aus einem Blasblech (20) bestehen, das den beweglichen Kontakt (1) von der Kontaktstelle (7) bis zu dem zweiten Ende (11) des beweglichen Kontakts (1) umgibt.
  9. Elektrisches Gerät zum Leitungsschutz nach Anspruch 8, dadurch gekennzeichnet, dass das Blasblech (20) eine U-förmige Form aufweist und einen ersten Zweig (20a) und einen zweiten Zweig (20c) aufweist, die im Wesentlichen parallel zueinander und einander gegenüberliegend sind und die sich von einer Basis (20b) erstrecken, die Teil des Blasblechs (20) ist.
  10. Elektrisches Gerät zum Leitungsschutz nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der flexible Leiter (3) ein starres Ende (15) zum Anschließen an den beweglichen Kontakt (1) aufweist.
  11. Elektrisches Gerät zum Leitungsschutz nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der flexible Leiter (3) einen verformbaren Abschnitt (17) in Abhängigkeit von der Position des beweglichen Kontakts (1) gegenüber von dem festen Kontakt (2) aufweist.
  12. Elektrisches Gerät zum Leitungsschutz nach einem der Ansprüche 10 und 11, dadurch gekennzeichnet, dass der bewegliche Kontakt (1) eine erste Seitenfläche (13), die gegenüber von dem festen Kontakt (2) angeordnet ist, und eine zweite gegenüberliegende Seitenfläche (14) aufweist, und dadurch, dass der erste verformbare Abschnitt (17) begrenzt ist durch ein erstes starres Ende (16) zum Anschließen an die Anschlussklemme (4) und durch das starre Ende (15) zum Anschließen an den beweglichen Kontakt (1), das zweites starres Ende (15) genannt wird, und gekrümmt ist und ein erstes Teilstück (17'), das sich von dem zweiten starren Ende (15) des Geflechts (3) erstreckt und gegenüber von der zweiten Seitenfläche (14) des beweglichen Kontakts (1) angeordnet ist, und ein zweites Teilstück (17'') aufweist, das das erste Teilstück (17') verlängert und sich bis zu dem ersten starren Ende (16) erstreckt.
  13. Elektrisches Gerät zum Leitungsschutz nach Anspruch 10 und 11, dadurch gekennzeichnet, dass der verformbare Abschnitt (17) durch ein erstes starres Ende (16) zum Anschließen an die Anschlussklemme (4) und durch das starre Ende (15) zum Anschließen an den beweglichen Kontakt (1), das zweites starres Ende (15) genannt wird, begrenzt ist und gekrümmt ist und sich von dem zweiten starren Ende (15) in der Verlängerung des zweiten Endes (11) des beweglichen Kontakts (1) und gegenüber von dem beweglichen Kontakt (1) erstreckt.
EP17177474.8A 2016-06-24 2017-06-22 Elektrisches gerät zum leitungsschutz Active EP3261105B1 (de)

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FR1655917A FR3053154B1 (fr) 2016-06-24 2016-06-24 Appareil electrique de protection de ligne

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GB1053936A (de) * 1964-08-01
SU1045298A1 (ru) * 1982-05-07 1983-09-30 Ленинградское Электромашиностроительное Объединение "Электросила" Им.С.М.Кирова Устройство дл защиты от сквозных токов короткого замыкани
SU1056302A1 (ru) * 1982-08-06 1983-11-23 Ленинградское Электромашиностроительное Объединение "Электросила" Им.С.М.Кирова Автоматический выключатель
SU1467599A1 (ru) * 1986-10-08 1989-03-23 Ленинградское Электромашиностроительное Объединение "Электросила" Им.С.М.Кирова Устройство дл защиты от токов короткого замыкани
FR2905795B1 (fr) * 2006-09-12 2012-11-16 Schneider Electric Ind Sas Dispositif de contact pour appareil electrique et appareil electrique equipe d'un tel dispositif

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FR3053154B1 (fr) 2019-08-09
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