EP1381126B1 - Dérivateur de surtensions encapsulé, sous pression, muni d'un éclateur - Google Patents

Dérivateur de surtensions encapsulé, sous pression, muni d'un éclateur Download PDF

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Publication number
EP1381126B1
EP1381126B1 EP03012711A EP03012711A EP1381126B1 EP 1381126 B1 EP1381126 B1 EP 1381126B1 EP 03012711 A EP03012711 A EP 03012711A EP 03012711 A EP03012711 A EP 03012711A EP 1381126 B1 EP1381126 B1 EP 1381126B1
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EP
European Patent Office
Prior art keywords
electrode
surge arrester
arrester according
encapsulated pressure
proof surge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03012711A
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German (de)
English (en)
Other versions
EP1381126A2 (fr
EP1381126A3 (fr
Inventor
Arnd Dr.-Ing. Ehrhard
Uwe Dipl.-Ing. Strangfeld
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.)
Dehn SE and Co KG
Original Assignee
Dehn and Soehne GmbH and Co KG
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 Dehn and Soehne GmbH and Co KG filed Critical Dehn and Soehne GmbH and Co KG
Publication of EP1381126A2 publication Critical patent/EP1381126A2/fr
Publication of EP1381126A3 publication Critical patent/EP1381126A3/fr
Application granted granted Critical
Publication of EP1381126B1 publication Critical patent/EP1381126B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
    • H01T4/12—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel hermetically sealed

Definitions

  • the invention relates to an encapsulated, flameproof surge with a spark gap within the capsule, which has a rotationally symmetric, in particular cylindrical shape, further comprises the spark gap two electrodes and at least one insulation section, the electrodes each with a preferably frontally or oppositely disposed, external power supply in combination stand and the power supply forms at least part of the capsule, according to the preamble of claim 1.
  • the energy conversion can only be achieved by limiting the arc voltage, e.g. be influenced by small distances, low pressures and the like.
  • the possible mains frequency follow current is to be moved quickly away from the thermally heavily loaded ignition area in order to ensure its reconsolidation.
  • the DE 100 08 766 A1 discloses an encapsulated arrester with spark horns in which a function separation as mentioned above is described to avoid the mentioned disadvantages.
  • a function separation as mentioned above is described to avoid the mentioned disadvantages.
  • the basic idea of the invention accordingly consists in ensuring, within a surge arrester, that the current flow direction in front of the insulation gap or the ignition region is changed by at least 90 °, preferably by 180 °.
  • the spark gap is formed so that the direction of movement of the arc is parallel to the cylinder axis, wherein the arc ignites perpendicular to the cylinder axis.
  • the power supply takes place within the spark gap up to the deflection area parallel to the cylinder axis.
  • the desired reversal of the current flow direction is effected by means for reversing the current direction or current direction within the capsule of the surge arrester or reversing the current direction or current direction changing design of at least one of the main electrodes.
  • a rod-shaped inner electrode is assumed to have a substantially rotationally symmetrical outer electrode arrangement, the outer electrode being spaced from the inner electrode and formed surrounding it.
  • the inner electrode has an axial course and the outer electrode has on its inner side the means for reverse current direction, which is designed as a conductive annular body, grid or hollow cylinder.
  • This conductive annular body, the grid or the hollow cylinder is electrically contacted with the outer electrode only at the power supply side remote end, the arc burns after ignition in Ableitfall substantially perpendicular to the axis of the inner electrode and moves parallel to this axis away from the ignition.
  • the conductive annular body which now takes over the function of the counter electrode, is spaced from the outer electrode. This distance may be gleichver Hughesd, but also be chosen variable starting from the ignition.
  • a rod-shaped inner electrode is surrounded by a substantially rotationally symmetrical outer electrode spaced apart, wherein the inner electrode has an axial course and the inner electrode comprises the means for reversing the current direction.
  • This device is in turn formed as a conductive, annular body, grid or hollow cylinder, which is contacted with the inner electrode only at the end facing away from the power supply end. Again, the ring is at a radial distance from the inner electrode.
  • the outer electrode may have a pot shape in an essential embodiment of the invention, wherein the open part of the pot receives the insulating portion which carries the inner electrode.
  • an auxiliary electrode can be introduced via the insulation section.
  • a complementary embodiment with respect to the arrangement of the auxiliary electrode is realized such that at the open part of the pot of the outer electrode is a circumferential insulation edge with downstream auxiliary electrode is located.
  • This auxiliary electrode jumps radially with respect to the insulation edge.
  • the auxiliary electrode may be annular, i. be designed rotationally symmetrical.
  • an outer electrode in the form of a pot preferably in the current supply side remote end an insulated against the main electrode auxiliary electrode is provided with a separate power supply within the pot.
  • This auxiliary electrode can be designed as a pin electrode.
  • an axially extending sleeve made of a erosion-resistant material which via a high-impedance region as insert in the insulation section with the inner or outer electrode is electrically connected.
  • the mentioned sleeve may consist of a ferromagnetic material.
  • the sleeve is formed as a partition and consists of a resistive material, metallized conductive polymers or materials with nonlinear current / voltage behavior.
  • the arc splitter may also be spaced from the firing location in the arc direction of travel, i. not run down to the ignition point.
  • the sleeve for the division of the arc preferably has at its end directed to the firing point inlet slots or inlet openings.
  • the sleeve may be made of a ferromagnetic material.
  • the distance between the inner and outer electrodes in the arc movement direction can be constant, but also increased continuously or discontinuously.
  • the electrodes and / or the devices for reversing the current direction have, at least in some embodiments, attachment structures for accelerating the running movement of the arc on their surfaces directed toward the arc focal side.
  • attachment structures may be grooves, projections and recesses in the direction of travel over the entire circumference of the electrode or similar structures. It is also possible to use materials with internal structuring, e.g. a fibrous structure or an oriented composite material.
  • chamber walls can be introduced, which form chambers oriented in the arc running direction.
  • These chamber walls preferably consist of a gas-emitting insulation material.
  • the chamber walls in turn comprise openings or slots.
  • the means for reversing the current direction may be a so-called split electrode which extends from the power supply remote end as a rod, disk or wall to the opposite electrode and then extends substantially parallel to the longitudinal axis of this opposite electrode.
  • a supplementary embodiment of the invention is based on two main electrodes, which are formed substantially opposite and rotationally symmetrical.
  • the respective end-side power supply is located substantially axially and in the center of the respective main electrode.
  • the device for reversing the current direction is connected radially on the outside of the respective main electrode and then runs initially axially in the direction of the opposite electrode and then angled in the direction of the longitudinal axis of the arrangement.
  • Such a device for reversing the direction of current can be embodied as a conductive finger, but also as a circular ring or circular ring segment.
  • the device for reversing the current direction in the form of a circular ring or in a circular ring segment has at least one conductive connecting web in the radial outer region between the circular ring or the circular segment and the respective main electrode. It is also possible to provide a plurality of adjacent circular segments, which each have an electrical connecting web to the radial outer side of the respective main electrode.
  • the mutually facing surfaces of the means for reversing the direction of current have from radially outward to radially inwardly an increasing distance for the purpose of safely extinguishing the arc.
  • this embodiment of a surge arrester has baffles extending in the axial direction for splitting the arc or at least one arc cooling device.
  • the surge arresters of the embodiments described below is based on a basic arrangement, each having two electrodes, optionally with auxiliary electrode.
  • the outer electrode 4 after Fig. 1a has a reversing device 4.1.
  • the shape of the outer electrode 4 is selected pot-shaped and there is formed in the frontal region outer arrester terminal 2 is present.
  • the inner electrode 3 is connected directly to the further outer lead terminal 1.
  • the ignition of the spark gap occurs between the electrodes 3 and 4 and the device for reversing the current direction 4.1 and along the insulation section 5.
  • the forming arc 6 is pushed away as a result of acting on him Lorentz forces F from the ignition in the lower region and in the illustration shown Fig. 1a . b moved upwards.
  • the device for reversing the current direction 3.1 is realized starting from the inner electrode 3.
  • the course of the reversal of current direction is symbolized by the arrow representations.
  • the means for reversing the current direction 3.1 and 4.1 each have a distance in the radial direction, either viewed from the inner electrode 3 or from the outer electrode 4, which may constitute part of the encapsulation possess.
  • An embodiment of the solution according to the embodiment according to Fig. 1a with auxiliary electrode 7 shows the sectional view to Fig. 2a , The local auxiliary electrode 7 is led into the ignition area of the arrangement via the insulation section 5.
  • auxiliary electrode 7, as in the Fig. 2b shown, also isolated to the main electrode 4 by means of an insulating edge or insulating strip 13 are introduced as a circumferential ring.
  • Fig. 2c in turn discloses a representation with execution of an auxiliary electrode 7 in the edge region towards the open side of the cup-shaped electrode 4, namely as a pin electrode, which is insulated from the electrode 4.
  • auxiliary electrode 7 isolated and axially downstream of the main electrode 4, wherein the spark of triggering during the flashover of the insulation 13, the opposite main or inner electrode 3 almost touched, whereby low trigger delay times can be realized.
  • the auxiliary electrode can according to the embodiments Fig. 2a and 2 B rotationally symmetrical, for example, be designed as a ring.
  • Fig. 2c a variant is shown in which, for example, for reasons of space or even for the realization of a minimum main electrode spacing, the auxiliary electrode 7 is guided isolated by the main electrode 4, in which case a pin-shaped design of the auxiliary electrode is preferred.
  • Fig. 3 shows an embodiment in which the improvement of the reconsolidation voltage, the division of the arc to the tick of the doubling of the immediate consolidation takes place immediately at its ignition between the two main electrodes. To simplify the Representation, the division takes place here only in two partial arcs, with a more extensive division is possible.
  • the isolation path 5 is used in this embodiment for the realization of the response voltage.
  • the track or section 8 is made of an electrically conductive material, e.g. POM, however, which is so high impedance that it must be skipped by the arc.
  • the chamber wall 9 is preferably made of a erosion-resistant material.
  • an auxiliary electrode may be provided for triggering, for example, analogous to the representation according to Fig. 2a is guided through the insulation section 5.
  • the erosion-resistant metal walls used can also consist of a ferromagnetic material. If, in addition to the desired reconsolidation of the arc, especially the voltage drop should be increased, the walls may be made of a resistive material, of metallized conductive polymers, but also of materials with nonlinear current / voltage behavior, e.g. Cold or thermistor, to be manufactured.
  • Fig. 4 shows an embodiment in which the usual in the low voltage division of the arc in partial arcs is made only after a certain distance of the arc within the spark gap of the surge arrester.
  • a ring 10 is here preferably made of ferromagnetic material and is provided with inlet slots 10.1, whereby the division of the arc is supported.
  • a plurality of rings 10 can be provided as shown in FIG. 4a of quenching plates or of insulating materials, whereby a cooling and thus extension of the arc is effected.
  • a further extension of the arc outside the ignition point can be achieved in that the distance between the two main electrodes 3 and 4 increases or increases in the direction of the arc.
  • the movement of the arc can be supported by further measures.
  • ferromagnetic material 12 Another way to accelerate the running motion is the complete or partial deposition of the main electrodes with ferromagnetic material 12 (see also Fig. 5 , Cross section 2), which causes a reinforcement of the Lorentz force.
  • the front side of the spark gap, to which the arc moves can also be deposited with ferromagnetic material.
  • the ferromagnetic material is a bundling and concentration of the field lines achieved, which is an attractive effect on the arc.
  • Fig. 6 shows an embodiment in which the main electrodes and the means for reversing the direction of current are not rotationally symmetrical. This, on the one hand, reduces the need for high-quality electrode material, and the single electrodes result in a reduction of the burnup at subsequent current load.
  • FIG. 6 Cross-sectional view - shows four devices for reversing the direction of the current, virtually as individual electrodes 14.
  • any number of individual electrodes 14 can be formed from one or also from both main electrodes, as a result of which, as already mentioned, the burnup is distributed to the individual electrodes at the following current load.
  • the inner electrode 3 may also have a contour, consist of individual partial electrodes or be designed as a hollow electrode.
  • Fig. 7a to 7c show some exemplary cross sections of possible electrode arrangements.
  • a baffle plate To limit the arc migration can basically be provided above the two main electrodes, ie at the end of the arc running path, a baffle plate.
  • Fig. 8 shows an embodiment of the surge arrester with means for reversing the direction of flow starting from the outer electrode 4, in which a main electrode is connected directly via the outer sheath of the spark gap.
  • a main electrode is connected directly via the outer sheath of the spark gap.
  • only one terminal needs to be conducted in isolation through the front side, whereby a cost reduction in production sets in particular for spark gaps without auxiliary electrode.
  • the power supply to the main electrodes is in each case axially from the end faces 100, 20.
  • the current is first guided radially outward.
  • an auxiliary electrode 70 is present for triggering.
  • the ignited in this area arc 60 moves due to the current forces in the direction of the central axis.
  • the current reversal formed electrodes 30 and 40 are, for example, according to the Fig. 5 to 7 designed as a finger or spiral electrode or have a circular or circular segment shape. Such an embodiment has several advantages.
  • the magnetic flux of the arc is intensified by the increased field strength in the base point region, as a result of which an accelerated movement of the arc can be achieved.
  • the adjacent fingers have the same potential and it can split the arc on several of the fingers, whereby the burnup can be significantly reduced.
  • baffles 80 for dividing the arc, but also arrangements for cooling the arc, for example after Fig. 4 Find use.
  • massive burn-off electrodes as in Fig. 2 shown, are introduced, to which the arc can be transferred.
  • Arc Abbrandringe or similar arrangements can be used, on which the arc moves considerably, whereby the burnup can be reduced.
  • the electrode design is after Fig. 9 selected so that they form a device for reversing the direction of current, which is connected radially outward to the respective main electrode, then extends axially in the direction of the opposite electrode and angled to the longitudinal axis of the arrangement.

Landscapes

  • Thermistors And Varistors (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Gas-Insulated Switchgears (AREA)

Claims (31)

  1. Dérivateur de surtensions encapsulé résistant à la pression, comprenant un trajet radioélectrique à l'intérieur de la capsule, celle-ci présentant une forme à symétrie de révolution, en particulier une forme cylindrique, le trajet radioélectrique comprenant en outre deux électrodes et au moins un tronçon d'isolation, les électrodes sont chacune en liaison avec une alimentation électrique externe agencée de préférence du côté frontal ou du côté opposé, et les alimentations électriques forment au moins une partie de la capsule,
    caractérisé en ce que l'une au moins des électrodes comprend un moyen pour l'inversion du sens du courant ou pour une modification du sens du courant à l'intérieur de la capsule, ou bien est réalisée de manière à inverser ou modifier le sens du courant.
  2. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 1,
    caractérisé en ce qu'une électrode intérieure en forme de barreau est entourée à distance par une électrode extérieure sensiblement à symétrie de révolution, ladite électrode intérieure présentant un tracé axial, l'électrode extérieure comporte au niveau de sa face intérieure le moyen pour l'inversion du sens de courant, lequel est réalisé sous la forme d'un corps, d'une grille ou d'un cylindre creux conducteur de forme annulaire, qui vient en contact électrique avec l'électrode extérieure uniquement à l'extrémité de celle-ci éloignée de l'alimentation électrique, et après amorçage, l'arc électrique se consume, dans le cas d'une dérivation, sensiblement perpendiculairement à l'axe de l'électrode intérieure et se déplace parallèlement à cet axe.
  3. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 1,
    caractérisé en ce qu'une électrode intérieure en forme de barreau est entourée à distance par une électrode extérieure sensiblement à symétrie de révolution, l'électrode intérieure présentant un tracé axial et l'électrode intérieure comprend le moyen pour l'inversion du sens du courant, lequel est réalisé sous forme de corps, de grille ou de cylindre creux conducteur de forme annulaire, qui vient en contact avec l'électrode intérieure uniquement à l'extrémité de celle-ci détournée de l'alimentation électrique et, après amorçage, l'arc électrique se consume, dans le cas d'une dérivation, sensiblement perpendiculairement à l'axe de l'électrode intérieure et se déplace parallèlement à cet axe.
  4. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications précédentes,
    caractérisé en ce que l'électrode extérieure présente la forme d'un pot, la partie ouverte du pot recevant le tronçon d'isolation qui porte l'électrode intérieure, et dans lequel une électrode auxiliaire est en outre introduite via le tronçon d'isolation.
  5. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications 1 à 3,
    caractérisé en ce que l'électrode extérieure présente la forme d'un pot, dans lequel une bordure d'isolation périphérique à la suite de laquelle est située l'électrode auxiliaire se trouve au niveau de la partie ouverte du pot.
  6. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 6, caractérisé en ce que la bordure d'isolation dépasse vers l'intérieur, par référence à l'électrode auxiliaire.
  7. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications 4 à 6,
    caractérisé en ce que l'électrode auxiliaire est réalisée à symétrie de révolution.
  8. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 7,
    caractérisé en ce que l'électrode auxiliaire présente une forme annulaire.
  9. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications 1 à 3,
    caractérisé en ce que l'électrode extérieure présente la forme d'un pot, et il est prévu, de préférence dans l'extrémité de celle-ci éloignée de l'alimentation électrique, une électrode auxiliaire isolée vis-à-vis de l'électrode principale, avec une alimentation électrique séparée.
  10. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 9, caractérisant ce que l'électrode auxiliaire est réalisée sous la forme d'électrode en tige.
  11. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications 1 à 10,
    caractérisé en ce que, pour diviser l'arc électrique entre l'électrode intérieure ou extérieure et le moyen respectif pour l'inversion du sens du courant, il est prévu une douille axiale en un matériau réfractaire, qui est reliée à l'électrode intérieure ou à l'électrode extérieure via une zone à forte résistance ohmique sous forme d'une pièce d'insert dans le tronçon d'isolation.
  12. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 1,
    caractérisé en ce que la douille est en un matériau ferromagnétique.
  13. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 11,
    caractérisé en ce que la douille est réalisée comme une paroi de séparation et est en un matériau résistif, en polymère conducteur métallisé, ou en un matériau qui présente un comportement courant/tension non linéaire.
  14. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications 1 à 10,
    caractérisé en ce que, pour diviser l'arc électrique entre l'électrode intérieure ou extérieure et le moyen respectif pour l'inversion du sens du courant, il est prévu une douille axiale en matériau réfractaire, qui est écartée de l'emplacement d'amorçage, dans la direction du déplacement de l'arc électrique.
  15. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications 11 à 14,
    caractérisé en ce que la douille comporte des fentes d'introduction, sur son côté dirigé vers l'emplacement d'amorçage.
  16. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 14 ou 15,
    caractérisé en ce que la douille est en un matériau ferromagnétique.
  17. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications 14 à 16,
    caractérisé en ce que la distance entre l'électrode intérieure l'électrode extérieure, dans la direction de déplacement de l'arc électrique, est conçue de manière à augmenter en continu ou en discontinu.
  18. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications précédentes,
    caractérisé en ce que les électrodes et/ou le moyen pour l'inversion du sens du courant comporte(nt), sur leur surface dirigée vers le côté où l'arc électrique se consume, au moins localement des structures en forme de bosse pour accélérer le mouvement de déplacement de l'arc électrique.
  19. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications précédentes,
    caractérisé en ce que des parois isolantes sont intégrées entre l'électrode intérieure ou l'électrode extérieure et le moyen respectif pour l'inversion du sens du courant, ces parois formant des chambres orientées dans la direction de propagation de l'arc électrique.
  20. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 19,
    caractérisé en ce que les parois des chambres sont en un matériau isolant qui dégage du gaz.
  21. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 19 ou 20,
    caractérisé en ce que les parois comportent des traversées ou des fentes.
  22. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications précédentes,
    caractérisé en ce que l'électrode extérieure ou l'électrode intérieure est doublée par l'arrière avec un matériau ferromagnétique.
  23. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 1,
    caractérisé en ce que le moyen pour l'inversion du sens de courant est une électrode subdivisée, qui s'étend ou est orientée depuis l'extrémité éloignée de l'alimentation électrique sous forme d'un barreau, d'une plaque ou d'une paroi vers l'électrode opposée, et s'étend ensuite sensiblement parallèlement à l'axe longitudinal de cette électrode opposée.
  24. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 1,
    caractérisé en ce que les deux électrodes principales sont réalisées sensiblement à l'opposé et à symétrie de révolution, l'alimentation électrique frontale respective étant agencée sensiblement axialement, et le moyen pour l'inversion du sens de courant est en outre raccordé radialement à l'extérieur à l'électrode principale respective, et s'étend ensuite axialement en direction de l'électrode opposée, ainsi que sous un angle par rapport à l'axe longitudinal de l'agencement.
  25. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 24,
    caractérisé en ce que le moyen pour l'inversion du sens du courant est au moins un ergot conducteur.
  26. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 24,
    caractérisé en ce que le moyen pour l'inversion du sens du courant présente une forme annulaire ou une forme de segment annulaire, dans lequel au moins une barrette de liaison conductrice est prévue dans la région radialement extérieure, entre l'anneau ou le segment d'anneau et l'électrode principale respective.
  27. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 26,
    caractérisé en ce qu'il est prévu plusieurs segments annulaires voisins, qui présentent chacun une barrette de liaison.
  28. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications 25 à 27,
    caractérisé en ce que les surfaces tournées l'une vers l'autre des moyens pour l'inversion du sens du courant présentent une distance qui augmente depuis une zone radialement extérieure vers une zone radialement intérieure.
  29. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications 25 à 28,
    caractérisé en ce qu'au moins une électrode auxiliaire d'amorçage ou de déclenchement est agencée radialement du côté extérieur entre les moyens pour l'inversion du sens du courant.
  30. Dérivateur de surtensions encapsulé résistant à la pression selon l'une des revendications 26 à 29,
    caractérisé en ce que des tôles à impact pour la subdivision de l'arc électrique, ou au moins un moyen de refroidissement de l'arc électrique, est/sont prévu(es) dans la région libre centrale, et s'étend(ent) en direction axiale.
  31. Dérivateur de surtensions encapsulé résistant à la pression selon la revendication 25,
    caractérisé en ce qu'une pluralité d'ergots conducteurs sont prévus en répartition du côté périphérique, s'étendant depuis une zone radialement extérieure vers une zone radialement intérieure.
EP03012711A 2002-07-11 2003-06-04 Dérivateur de surtensions encapsulé, sous pression, muni d'un éclateur Expired - Lifetime EP1381126B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10231431 2002-07-11
DE10231431.4A DE10231431B4 (de) 2002-07-11 2002-07-11 Gekapselter, druckfester Überspannungsableiter mit einer Funkenstrecke

Publications (3)

Publication Number Publication Date
EP1381126A2 EP1381126A2 (fr) 2004-01-14
EP1381126A3 EP1381126A3 (fr) 2009-10-21
EP1381126B1 true EP1381126B1 (fr) 2010-08-25

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EP (1) EP1381126B1 (fr)
AT (1) ATE479219T1 (fr)
DE (2) DE10231431B4 (fr)

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EP1381126A2 (fr) 2004-01-14
DE10231431B4 (de) 2014-03-20
DE50313009D1 (de) 2010-10-07
ATE479219T1 (de) 2010-09-15
EP1381126A3 (fr) 2009-10-21
DE10231431A1 (de) 2004-01-29

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