EP3857585B1 - Einrichtung zur löschung eines lichtbogens für eine elektrische schutzvorrichtung und elektrische schutzvorrichtung mit dieser vorrichtung - Google Patents

Einrichtung zur löschung eines lichtbogens für eine elektrische schutzvorrichtung und elektrische schutzvorrichtung mit dieser vorrichtung Download PDF

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Publication number
EP3857585B1
EP3857585B1 EP18796707.0A EP18796707A EP3857585B1 EP 3857585 B1 EP3857585 B1 EP 3857585B1 EP 18796707 A EP18796707 A EP 18796707A EP 3857585 B1 EP3857585 B1 EP 3857585B1
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EP
European Patent Office
Prior art keywords
electric arc
restrike
splitting
zone
extinguishing device
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EP18796707.0A
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English (en)
French (fr)
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EP3857585A1 (de
Inventor
Gauthier DÉPLAUDE
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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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal parts
    • H01H9/362—Mounting of plates in arc chamber
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal parts
    • H01H2009/365—Metal parts using U-shaped plates

Definitions

  • the present invention relates to the field of devices for extinguishing an electric arc for an electrical protective device, preferably of the modular type, as well as the field of electrical protective devices, preferably of the modular type, integrating such extinguishing devices. of an electric arc.
  • an electrical protection device comprises at least one pair of contacts which includes a fixed contact and a moving contact.
  • This pair of contacts can adopt two stable positions, namely a so-called closed position, in which the fixed contact and the movable contact are in contact, and an open position of the contacts, in which the movable contact is at a distance from the contact. fixed. If a fault appears on the line to be protected by the electrical protection device, a mechanical lock makes it possible to switch the pair of contacts from their closed position to their open position. Under these conditions, an electric arc is created between the fixed contact and the movable contact and, more particularly, at their respective electrodes. In order to control this electric arc, an extinguishing chamber or interrupting chamber is generally provided in the electrical protection device.
  • This extinguishing chamber comprises a device for extinguishing an electric arc which has the function of splitting the electric arc formed at the level of the pair of contacts into a plurality of small split electric arcs.
  • maximum compactness is sought. Therefore, in order to increase the voltage of the electric arc and thus limit and rapidly reduce the intensity to zero, so as to isolate the fault, it is known, rather than lengthen the column of the electric arc and thus increase its tension, to split it into a plurality of small fractionated electric arcs to obtain a similar or even improved effect.
  • This splitting of the electric arc is usually carried out by means of a plurality of conductive splitting plates which the extinguishing device comprises which are mounted parallel to each other.
  • this plurality of small split electric arcs can become unstable within the plurality of splitter plates. More particularly, it happens that one of the split electric arcs escapes from the splitting zone to come close to the entrance zone of the plurality of splitting plates, which causes a re-ignition of the electric arc and a decrease in the value of the voltage, and then impacts the performance of the protective electrical device. This restrike phenomenon can lead to the destruction of the electrical protection device, even before the current can be cut following the occurrence of the fault, which is not desirable.
  • the object of the present invention is to overcome these drawbacks by proposing a solution aiming to avoid the re-ignition of the electric arc, having a limited size and aiming to improve the performance and the robustness of the electrical protection device in which the device of extinction is intended to be integrated.
  • said at least one anti-reboot element 11, 11', 11" is designed to be arranged only opposite the positioning zone P, which makes it possible to propose an extinguishing device 1 of compact form, since said at least least one anti-reboot element 11, 11', 11" remains confined at the level of the positioning zone P, which has the advantage of not increasing its size.
  • said at least one anti-reboot element 11, 11', 11" cannot in any case be placed outside this positioning zone P. It is therefore particularly suitable for being integrated into an electrical device of protection 2 compact and in particular of the modular type. In addition, this particular selection makes it possible not to degrade the performance of the electrical protection device 2 in which it is intended to be integrated.
  • said at least one anti-reboot element 11, 11', 11" forms a barrier to movement in the second re-ignition direction D2 of a fractional electric arc EF, which is located either at the level of the column of the fractional electric arc EF, or at the level of the feet of the fractional electric arc EF ( figures 3A and 3B ).
  • This barrier to movement advantageously opposes a low resistance to the entry of the electric arc, which has been created between the movable contact 16 and the fixed contact 15 due to the particular configuration of said at least one anti-reboot element 11, 11 ', 11", when the latter moves in the first splitting direction D1.
  • said at least one anti-reboot element 11, 11', 11" is made of electrically insulating material, this provides an significant and optimal gain in arc voltage by gas-producing effect and by increasing the pressure within the electric arc extinguishing chamber. Therefore thanks to this advantageous configuration, initially the electric arc, which was created between the movable contact 16 and the fixed contact 15, during the opening of the latter, moves at the level of the entry zone 8, then in a second time the electric arc is split at the level of the bottom of the notch 6. A plurality of split electric arcs EF is then created in the split zone ( figures 3A and 3B ).
  • the first and second median axes M1, M2 each extend in a transverse direction which is in the direction of the width l1 of the splitting plate 3.
  • Each splitting plate 3 comprises two main faces 12.
  • the largest dimension of extension of said at least one anti-reboot element 11, 11', 11" extends in a longitudinal direction substantially perpendicular to the lateral edge 5 of said at least one splitter plate 3, facing which the anti-reboot element 11, 11', 11" is arranged ( figure 3B , 5 , 6A , 8 , 9 and 11 ).
  • said at least one anti-restart element 11, 11', 11" is arranged upstream of the splitting zone 9 of the electric arc ( figures 3A and 3B ).
  • This arrangement forms an obstacle preventing the return of a fractionated electric arc EF which would be located in the splitting zone 9 in the second restart direction D2 towards the entry zone 8, without hindering either the passage of the electric arc, nor the splitting of the electric arc and without creating additional space.
  • the predetermined length L1 is less ( figure 3B , 5 , 6A , 9 and 11 ) or equal ( figure 8 ) to a width l1 of the splitter plate 3.
  • the predetermined length L1 is preferably at least greater than or equal to three quarters of the width lb1 of the branch 10.
  • said at least one anti-reboot element 11, 11" consists of a projecting portion of predetermined length L1 which projects from at least one of the two support elements 4 ( figure 3B , 4 , 5 , 6A 6B , 7 , 8 ) or at least one separate support piece ( figure 10 and 11 ).
  • the separate support piece may consist of a part of an envelope of the electrical protection device 2, for example, a side wall 23 of the envelope, a portion of which is located at the level of the extinguishing chamber 22 of the electric arc.
  • the protruding portion may consist of an elongated element, preferably rectilinear.
  • This particularly advantageous arrangement according to the first possibility makes it possible to take advantage of the existence of the two support elements 4, which have the primary function of supporting the splitting plates 3, or of a separate support piece, to arrange said at least one 11, 11" anti-reboot element. This also results in ease of putting implementation of the present invention at the time of assembly of the electrical protection device 2, since no other additional part must be added or added.
  • said at least one of the support elements 4 comprises a plate 13 comprising two large side edges 14 and said projecting portion of said at least one anti-reboot element 11 projects from a large side edges 14 ( figure 3B , 4 , 5 , 6A , 6B , 7 , 8 ).
  • Plate 13 is preferably perforated.
  • each support element 4 comprises a plate 13 comprising a plurality of projecting portions forming a plurality of anti-reboot elements 11 and the projecting portions of one of the plates 13 are located opposite protruding portions of the other of the plates 13 ( figure 5 , 6A and 6B ).
  • the pair of plate 13, optionally perforated, each provided with protruding portions constitutes two parts.
  • Each part then has the shape of a comb having an L-shaped section, the teeth of which correspond to the projecting portions ( figure 4 ).
  • These parts may have come from molding.
  • these plates 13 provided with projecting portions can be made of a polymer material, for example polyamide.
  • each perforated plate 13 has two rows R1, R2 substantially parallel to each other of aligned perforations 13'.
  • One of the rows R2 is located in the immediate vicinity of the side edge 14 from which the projecting portions extend.
  • the protruding portions of length L1 and of thickness e are substantially parallel to each other and are spaced from each other at a regular interval by a perforation 13'.
  • the protruding portions consist of straight elongated elements.
  • the projecting portions of a perforated plate 13 are fourteen in number.
  • the perforations 13' of each row R1, R2 are thirteen in number.
  • the fractionation plates 3 are thirteen in number.
  • a perforation 13' is provided to form a fixing with a tab 3' protruding from the side edge 5 of the splitting plate 3.
  • the tabs 3' are arranged to be fitted into the perforations 13'.
  • each support element 4 comprises a plate 13 comprising a plurality of projecting portions and the projecting portions of one of the plates 13 are connected to the projecting portions of the other of the plates 13, so as to form a plurality of anti-reboot elements 11 of predetermined length L1 substantially equal to the width l1 of the splitter plate 3 ( figure 7 and 8 ).
  • Plate 13 is preferably perforated.
  • each perforated plate 13 has two rows R1, R2 substantially parallel to each other of aligned perforations 13'.
  • One of the rows R2 is located in the immediate vicinity of the side edge 14 from which extend the protruding portions which in this example are in the form of rectilinear elongated elements.
  • the plurality of rectilinear elongated elements form a center distance between the two perforated plates 13 which are kept parallel to each other and at a distance.
  • Each rectilinear elongated element has a length L1 and a thickness of zero.
  • the plurality of rectilinear elongated elements are substantially parallel to each other and are spaced from each other at a regular interval by a perforation 13'. These rectilinear elongated elements are fourteen in number.
  • the perforations 13' of each row R1, R2 are thirteen in number.
  • the fractionation plates 3 are thirteen in number.
  • a perforation 13' is provided to form a fixing with a tongue 3' protruding from the side edge 5 of the splitting plate 3.
  • the tongues 3' are arranged to be fitted into the perforations 13'.
  • said at least one anti-reboot element 11 is arranged opposite and at a distance from the main face 12 of at least one splitter plate 3 ( figure 6B ).
  • said at least one anti-reboot element 11' consists of at least one coating layer extending only over all or part of the positioning zone P ( figure 9 ).
  • said at least one anti-reboot element 11, 11', 11" is arranged facing and in contact with the main face 12 of at least one splitter plate 3.
  • the electric arc extinguishing device 1 comprises a plurality of central anti-reignition elements 11, 11', 11" which each extend between two adjacent splitter plates 3 ( figure 3A , 6B , 8 and 11 ).
  • the thickness e of the anti-reboot element 11, 11', 11" is preferably strictly less than the distance interval I between two adjacent splitting plates 3 and greater than half the distance I between two fractionation plates 3.
  • This advantageous arrangement facilitates the insertion/integration of said at least one anti-reignition element 11, 11', 11" between two adjacent splitter plates 3. Furthermore, the resistance to splitting of the electric arc, which could provide said at least one anti-reboot element 11, is thus limited.
  • the electric arc extinguishing device 1 comprises at least one end anti-reignition element 11, 11', 11" placed opposite an end splitting plate 3 ( Figures 3A, 3B , 5 , 6A , 8 and 11 ).
  • the extinguishing device 1 has thirteen fractionation plates 3, including two end fractionation plates 3, twelve central anti-reboot elements 11 and two of anti-reboot elements 11 extremal.
  • the extinguishing device 1 can be configured so that between each adjacent splitter plate 3 is arranged a central anti-reboot element 11, or for a number n of splitter plates 3, n-1 number of element anti-reboot 11 central.
  • the extinguishing device 1 can be configured so that in front of the two end fractionation plates 3 is arranged an end anti-reboot element 11, ie two end anti-reboot elements 11 in total.
  • the electrical protective device 2 is characterized in that the electric arc extinguishing chamber 22 comprises the electric arc extinguishing device 1 according to the invention.
  • the electrical protection device 2 comprises an envelope which comprises two side walls 23, the electric arc extinguishing chamber 22 being delimited at least by the two side walls 23 on at least one of which said at least one anti-reboot element 11" ( figure 10 and 11 ).
  • This particularly advantageous arrangement makes it possible to take advantage of the existence of at least one side wall 23, the main function of which is to mechanically maintain the various components of the electrical protection device 2, in order to place said at least one anti-reboot element 11 ".
  • This also results in an ease of implementation of the present invention at the time of assembly of the electrical protection device 2, since no other additional part has to be added.
  • the side walls 23 and said at least one anti-reboot element 11" can be made of a polymer material, for example polyamide.
  • At least one of the side walls 23 comprises a plurality of anti-reboot elements 11" consisting of a plurality of projecting portions of predetermined length L1 ( figure 10 and 11 ).
  • the protruding portions of length L1 and of thickness e are substantially parallel to each other and are spaced from each other at a regular interval.
  • the protruding portions consist of straight elongated elements.
  • either only one of the side walls 23 can comprise the plurality of anti-reboot elements 11", or each of the side walls 23 can comprise the plurality of anti-reboot elements 11".
  • the component Ue can be of the order of 18 volts, while the second component E0 can be a few volts per millimeter. It therefore follows from this relationship that to increase the voltage of the electric arc Uarc, it is better to split the electric arc into a multitude of fractionated electric arcs EF, in order to maximize the preponderant term Ue, rather than to lengthen the electric arc is the choice that is made in the present invention which seeks to favor compactness.
  • the electric arc extinguishing chamber 22 can be divided into three subassemblies.
  • the fixed contact 15 comprises an electrode or contact patch 24, which can be made of silver graphite alloy (AgC).
  • the movable contact 16 can itself be made of silver-plated copper (Cu/Ag). The electric arc is formed in this first sub-assembly when the fixed/mobile contacts 15, 16 open.
  • the second sub-assembly also called the prechamber, are located two conductive horns 25 and 26 which face each other and which delimit the prechamber 27. Their function is to guide the electric arc towards the plurality of splitting plates 3.
  • One of the conductive horns 25 carries the fixed contact 15.
  • the conductive horns 25, 26 are preferably made of mild steel coated with copper or nickel.
  • the conductive horns 25, 26 diverge from the first subset to the third subset.
  • the pre-chamber 27 can also comprise two insulating cheeks 27' facing each other and which are mounted on the side walls 23.
  • these insulating cheeks 27' can be made of polymer, such as polyamide.
  • the insulating cheeks 27' have the function of forming exhaust channels C for the expulsion of the ionized gases created within the chamber 22 for extinguishing the electric arc.
  • the extinguishing device 1 of the electric arc is arranged the extinguishing device 1 of the electric arc according to the invention.
  • This third sub-assembly therefore comprises at least a plurality of electric arc splitter plates 3 arranged substantially parallel to each other and being held together by a distance interval I between two adjacent splitter plates 3 by two support elements 4 arranged on at least part of each side edge 5 that each of the splitter plates 3 comprises.
  • One of the conductive horns 26 extends into this third sub-assembly.
  • the splitter plates 3 can be made of mild steel coated with copper or nickel.
  • the two support elements 4 can be made of insulating material, for example, of insulating cardboard.
  • the width l1 of the splitter plates 3 occupies substantially the entire width lm of the electrical protection device 2, this width possibly being one module, as explained below ( figure 2B and 3B ).
  • the width l1 can be substantially between 13 and 15 millimeters, while the width lm of the electrical protection device 2 can be 18 millimeters.
  • the electrical protection device 2 is preferably of the modular type, and thus has a width lm which is a multiple of a module, that is to say that the distance between the two side walls 23 of the casing of the electrical protection device 2 corresponds to a multiple of a standardized value, called module.
  • the width of a module is substantially of the order of 18 millimeters.
  • the electrical protection device 2 has a width lm of a single module ( figure 2B and 3B ).
  • the electrical protection device 2 may consist of a circuit breaker or a differential circuit breaker, preferably of the modular type.
  • the electrical protective device 2 can be provided to protect a single line (electrical protective device 2 monopolar) or several lines (electrical protective device 2 multipolar).
  • the first line can comprise a first connection terminal 28 and a second connection terminal 29 between which the fixed contact 15 and the movable contact 16 are arranged.
  • the first connection terminal 28 is preferably provided to be electrically connected to the electrical network
  • the second connection terminal 29 is preferably designed to be electrically connected to a load of an electrical installation.
  • the fixed contact 15 can be electrically connected to the first connection terminal 28 and the movable contact 16 can be electrically connected to the second connection terminal 29.
  • the magnetic actuator 21 is electrically connected, on the one hand, to the first connection terminal 28 and, on the other hand, to the fixed contact 15, between the latter.
  • the magnetic actuator 21 comprises a coil 30 surrounding a mobile core 31 in translation which can strike the trigger 19, so as to actuate the mechanical lock 18.
  • the mobile core 31 is configured to move in the event of a short-circuit.
  • the thermal actuator 21' is electrically connected, on the one hand, to the second connection terminal 29 and, on the other hand, to the movable contact 16, between the latter.
  • the thermal actuator 21' can consist of a bimetallic strip, electrically connected or not to the moving contact 4 by a flexible conductor (not shown) such as a conductive braid, arranged to actuate the trigger 19' under the effect of a deformation of the bimetallic strip so as to actuate the mechanical lock 18.
  • a flexible conductor such as a conductive braid
  • the bimetallic strip is deformed by direct or indirect heating of the flexible conductor, in the event of prolonged overcurrent.

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  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (18)

  1. Einrichtung zur Löschung (1) eines Lichtbogens für eine elektrische Schutzvorrichtung (2) umfassend:
    - eine Mehrzahl von Löschblechen (3) des Lichtbogens, die im Wesentlichen parallel zueinander angeordnet sind und von zwei Tragelementen (4), die auf wenigstens einem Abschnitt jedes Seitenrands (5), den jedes der Löschbleche (3) umfasst, in einem Abstandsintervall (I) zwischen zwei benachbarten Löschblechen (3) zueinander gehalten werden,
    wobei jedes Löschblech (3) ferner eine Einkerbung zum Einlass (6) des Lichtbogens umfasst, die an einem unteren Rand (7) beginnt, den jedes der Löschbleche (3) umfasst, wobei die Gesamtheit der Einlasseinkerbungen (6) einen Bereich zum Einlass (8) des Lichtbogens bilden, der dafür angeordnet ist, den Lichtbogen zu einem Bereich zur Aufteilung (9) des Lichtbogens, der sich stromab des Einlassbereichs (8) befindet, in einer ersten Aufteilungsrichtung (D1) des Lichtbogens zu führen, um den Lichtbogen in eine Mehrzahl von aufgeteilten Lichtbögen (EF) aufzuteilen,
    wobei jede Einkerbung zum Einlass (6) des Lichtbogens zwei Schenkel (10) begrenzt, die jedes der Löschbleche (3) umfasst, wobei jeder Schenkel (10) eine Breite (lb1) aufweist, die je nach dem Profil des Rands (6') der Einlasseinkerbung (6) variabel oder konstant ist,
    - wenigstens ein Element zur Verhinderung der Neuzündung (11, 11', 11") des Lichtbogens aus elektrisch isolierendem Material,
    wobei das Element zur Verhinderung der Neuzündung (11, 11', 11") neben einer Hauptseite (12) wenigstens eines Löschblechs (3) angeordnet ist,
    wobei die Löscheinrichtung (1) dadurch gekennzeichnet ist, dass:
    die Hauptseite (12) einen stromaufwärtigen Bereich (AM) und einen stromabwärtigen Bereich (AV) umfasst, die voneinander getrennt sind, wobei sich der stromaufwärtige Bereich (AM) an der Oberfläche der Schenkel (10) befindet und durch den Rand (6') der Einkerbung (6) begrenzt ist, und der stromabwärtige Bereich (AV) der restlichen Oberfläche der Hauptseite (12) entspricht,
    die Hauptseite (12) ferner einen Bereich zur Positionierung (P) des wenigstens einen Elements zur Verhinderung der Neuzündung (11, 11', 11") umfasst, neben dem das wenigstens eine Element zur Verhinderung der Neuzündung (11, 11', 11") angeordnet ist, wobei sich der Positionierungsbereich (P) zwischen einer ersten Mittelachse (M1) des stromaufwärtigen Bereichs (AM) und einer zweiten Mittelachse (M2) des stromabwärtigen Bereichs (AV) erstreckt,
    wobei das wenigstens eine Element zur Verhinderung der Neuzündung (11, 11', 11") eine vorbestimmte Länge (L1) aufweist, die dazu ausgebildet ist, die Rückkehr des Lichtbogens nach dessen Aufteilung in eine Mehrzahl von aufgeteilten Lichtbögen (EF) in einer Richtung entgegen der ersten Aufteilungsrichtung (D1), zweite Neuzündungsrichtung (D2) genannt, zu verhindern.
  2. Einrichtung zur Löschung des Lichtbogens nach Anspruch 1, dadurch gekennzeichnet, dass sich die größere Erstreckungsabmessung des wenigstens einen Elements zur Verhinderung der Neuzündung (11, 11', 11") in einer Längsrichtung im Wesentlichen senkrecht zum Seitenrand (5) des wenigstens einen Löschblechs (3) erstreckt, neben dem das Element zur Verhinderung der Neuzündung (11, 11', 11") angeordnet ist.
  3. Einrichtung zur Löschung des Lichtbogens nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass das wenigstens eine Element zur Verhinderung der Neuzündung (11, 11', 11") stromauf des Bereichs zur Aufteilung (9) des Lichtbogens angeordnet ist.
  4. Einrichtung zur Löschung des Lichtbogens nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die vorbestimmte Länge (L1) kleiner als oder gleich einer Breite (l1) des Löschblechs (3) ist.
  5. Einrichtung zur Löschung des Lichtbogens nach Anspruch 4, dadurch gekennzeichnet, dass die vorbestimmte Länge (L1) wenigstens größer als oder gleich drei Vierteln der Breite (lb1) des Schenkels (10) ist.
  6. Einrichtung zur Löschung des Lichtbogens nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das wenigstens eine Element zur Verhinderung der Neuzündung (11, 11") aus einem hervorstehenden Teilbereich mit vorbestimmter Länge (L1) besteht, der von wenigstens einem der zwei Tragelemente (4) oder wenigstens einem getrennten Tragteil hervorsteht.
  7. Einrichtung zur Löschung des Lichtbogens nach Anspruch 6, dadurch gekennzeichnet, dass das wenigstens eine der Tragelemente (4) eine Platte (13) mit zwei großen Seitenrändern (14) umfasst, und dadurch, dass der hervorstehende Teilbereich des wenigstens einen Elements zur Verhinderung der Neuzündung (11) von einem der großen Seitenränder (14) hervorsteht.
  8. Einrichtung zur Löschung des Lichtbogens nach Anspruch 7, dadurch gekennzeichnet, dass jedes Tragelement (4) eine Platte (13) mit einer Mehrzahl von herorstehenden Teilbereichen umfasst, die eine Mehrzahl von Elementen zur Verhinderung der Neuzündung (11) bilden, und dadurch, dass sich die hervorstehenden Teilbereiche einer der Platten (13) neben den hervorstehenden Teilbereichen der anderen der Platten (13) befinden.
  9. Einrichtung zur Löschung des Lichtbogens nach Anspruch 8, dadurch gekennzeichnet, dass jedes Tragelement (4) eine Platte (13) mit einer Mehrzahl von hervorstehenden Teilbereichen umfasst, und dadurch, dass die hervorstehenden Teilbereiche einer der Platten (13) mit den hervorstehenden Teilbereichen der anderen der Platten (13) verbunden sind, um eine Mehrzahl von Elementen zur Verhinderung der Neuzündung (11) mit vorbestimmter Länge (L1) zu bilden, die im Wesentlichen gleich der Breite (l1) des Löschblechs (3) ist.
  10. Einrichtung zur Löschung des Lichtbogens nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das wenigstens eine Element zur Verhinderung der Neuzündung (11') aus wenigstens einer Beschichtungsschicht besteht, die sich nur über den gesamten Positionierungsbereich (P) oder einen Abschnitt davon erstreckt.
  11. Vorrichtung zur Löschung des Lichtbogens nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das wenigstens eine Element zur Verhinderung der Neuzündung (11, 11") neben und in einem Abstand von der Hauptseite (12) wenigstens eines Löschblechs (3) angeordnet ist.
  12. Vorrichtung zur Löschung des Lichtbogens nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass das wenigstens eine Element zur Verhinderung der Neuzündung (11, 11', 11") neben und in Kontakt mit der Hauptseite (12) wenigstens eines Löschblechs (3) angeordnet ist.
  13. Einrichtung zur Löschung des Lichtbogens nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass sie eine Mehrzahl von mittleren Elementen zur Verhinderung der Neuzündung (11, 11', 11") umfasst, die sich jeweils zwischen zwei benachbarten Löschblechen (3) erstrecken.
  14. Einrichtung zur Löschung des Lichtbogens nach Anspruch 13, dadurch gekennzeichnet, dass die Dicke (e) des Elements zur Verhinderung der Neuzündung (11, 11', 11") streng kleiner als das Abstandsintervall (I) zwischen zwei benachbarten Löschblechen (3) und größer als die Hälfte des Abstands (I) zwischen zwei Löschblechen (3) ist.
  15. Einrichtung zur Löschung des Lichtbogens nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass sie wenigstens ein extremales Element zur Verhinderung der Neuzündung (11, 11', 11") umfasst, das neben einem extremalen Löschblech (3) angeordnet ist.
  16. Elektrische Schutzvorrichtung (2) umfassend:
    - wenigstens eine erste Leitung, die ein Paar von Kontakten beziehungsweise einen festen Kontakt (15) und einen beweglichen Kontakt (16) umfasst,
    - ein Organ zur Steuerung (17) der Position des beweglichen Kontakts (16), das mittels eines mechanischen Schlosses (18) mit dem beweglichen Kontakt (16) verbunden ist, das geeignet ist, zwischen zwei stabilen Positionen umzuschalten, die der Öffnung beziehungsweise der Schließung des festen (15) und beweglichen Kontakts (16) nach einer Betätigung des Steuerorgans (17) entsprechen, oder in eine Öffnungsposition des festen (15) und beweglichen Kontakts (16) nach einer mechanischen Betätigung wenigstens eines Auslösers (19, 19') in eine Öffnungsposition umzuschalten, der einen elektrischen Fehler auf der wenigstens einen ersten Leitung weitergibt,
    - Auslösemittel (20) mit wenigstens einem magnetischen (21) und/oder thermischen (21') und/oder elektronischen Betätigungselement, das dafür vorgesehen ist, den wenigstens einen Auslöser (19, 19') zur Auslösung des mechanischen Schlosses (18) zu betätigen, und
    - wenigstens eine Kammer zur Löschung (22) eines Lichtbogens, wobei die elektronische Schutzvorrichtung (2) dadurch gekennzeichnet ist, dass die Kammer zur Löschung (22) des Lichtbogens die Einrichtung zur Löschung (1) des Lichtbogens nach einem der Ansprüche 1 bis 15 umfasst.
  17. Elektrische Schutzvorrichtung nach Anspruch 16, dadurch gekennzeichnet, dass die elektrische Schutzvorrichtung (2) eine Schale umfasst, die zwei Seitenwände (23) aufweist, wobei die Kammer zur Löschung (22) des Lichtbogens wenigstens von den zwei Seitenwänden (23) begrenzt ist, wobei auf wenigstens einer von diesen das wenigstens eine Element zur Verhinderung der Neuzündung (11") angeordnet ist.
  18. Elektrische Schutzvorrichtung nach Anspruch 17, dadurch gekennzeichnet, dass wenigstens eine der Seitenwände (23) eine Mehrzahl von Elementen zur Verhinderung der Neuzündung (11") umfasst, die aus einer Mehrzahl von hervorstehenden Teilbereichen mit vorbestimmter Länge (L1) besteht.
EP18796707.0A 2018-09-25 2018-09-25 Einrichtung zur löschung eines lichtbogens für eine elektrische schutzvorrichtung und elektrische schutzvorrichtung mit dieser vorrichtung Active EP3857585B1 (de)

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PCT/FR2018/052346 WO2020065141A1 (fr) 2018-09-25 2018-09-25 Dispositif d'extinction d'un arc electrique pour un appareil electrique de protection et appareil electrique de protection integrant ledit dispositif

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EP3857585B1 true EP3857585B1 (de) 2022-07-20

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Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2517874A1 (fr) * 1981-12-03 1983-06-10 Merlin Gerin Chambre d'extinction d'arc a empilage mixte de plaques refractaires a electrodes et a fentes
JPH0646530B2 (ja) * 1987-07-13 1994-06-15 三菱電機株式会社 ３極以上の多極回路しや断器
US6248970B1 (en) * 1999-11-05 2001-06-19 Siemens Energy & Automation, Inc. ARC chute for a molded case circuit breaker
EP1313117B1 (de) 2001-11-16 2014-06-04 Abb Ag Lichtbogenlöschanordnung für ein elektronisches Schaltgerät
FR2873511B1 (fr) * 2004-07-21 2006-12-29 Soule Prot Surtensions Sa Dispositif de protection contre les surtensions, les surcharges ou les courts-circuits a pouvoir de coupure ameliore
US7034242B1 (en) * 2004-11-09 2006-04-25 Eaton Corporation Arc chute and circuit interrupter employing the same
DE102008017868B3 (de) 2008-04-09 2009-12-24 Abb Ag Lichtbogenlöschblechanordnung für einen elektrischen Schalter
CN101540248B (zh) * 2009-03-30 2011-04-13 常熟开关制造有限公司(原常熟开关厂） 低压断路器
DE102010032715A1 (de) * 2010-07-29 2012-02-02 Abb Ag Lichtbogenlöscheinrichtung und Installationsschaltgerät mit einer Lichtbogenlöscheinrichtung
CN207503900U (zh) * 2017-10-30 2018-06-15 浙江正泰电器股份有限公司 塑壳式断路器

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WO2020065141A1 (fr) 2020-04-02
EP3857585A1 (de) 2021-08-04
AU2018443896B2 (en) 2022-03-17
CN113168983B (zh) 2024-05-17
CN113168983A (zh) 2021-07-23

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