EP0789434A1 - Méthode pour influencer la capacité d'extinction de courant de suivi pour dispositifs parafoudres et dispositifs parafoudre utilisant cette méthode - Google Patents

Méthode pour influencer la capacité d'extinction de courant de suivi pour dispositifs parafoudres et dispositifs parafoudre utilisant cette méthode Download PDF

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Publication number
EP0789434A1
EP0789434A1 EP96118511A EP96118511A EP0789434A1 EP 0789434 A1 EP0789434 A1 EP 0789434A1 EP 96118511 A EP96118511 A EP 96118511A EP 96118511 A EP96118511 A EP 96118511A EP 0789434 A1 EP0789434 A1 EP 0789434A1
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EP
European Patent Office
Prior art keywords
spark gap
housing
pressure
arrangement according
gap arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96118511A
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German (de)
English (en)
Other versions
EP0789434B1 (fr
Inventor
Peter Dr.-Ing. Zahlmann
Raimund König
Manfred Zeidler
Georg Wittmann
Willibald Duschek
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
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Publication date
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Application filed by Dehn and Soehne GmbH and Co KG filed Critical Dehn and Soehne GmbH and Co KG
Publication of EP0789434A1 publication Critical patent/EP0789434A1/fr
Application granted granted Critical
Publication of EP0789434B1 publication Critical patent/EP0789434B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • H01T1/00—Details of spark gaps
    • H01T1/02—Means for extinguishing arc

Definitions

  • the invention is in the technical field of spark gap arrangements.
  • the invention relates first of all to a method for influencing the subsequent current extinguishing capacity of spark gap arrangements with two electrodes which are arranged within a housing, wherein an extinguishing gas can optionally be provided within the housing.
  • the invention further relates to spark gap arrangements for carrying out the method.
  • Spark gap arrangements are, among other things, a preferred component for overvoltage protection due to their large energy dissipation capacity. Especially with spark gap arrangements that are installed in the low-voltage supply system, a follow-on current can occur when discharging an overvoltage. For this reason, the demand for the follow current extinguishing capacity arises for such devices.
  • the values for UA + UK are basic parameters of plasma technology and can hardly be influenced.
  • a first basic possibility is to influence the arc length l. This is usually achieved by widening the arch. It is disadvantageous that the geometrical dimensions of the electrodes become correspondingly large and that this influence is bound to certain geometrical specifications.
  • the second basic possibility is to influence the arc field strength E and thus the subsequent current extinguishing capacity via the direct cooling effect. In known devices, this is usually brought about by cooling the arc. The cooling is usually achieved through the cooling effect of the insulating material walls and the use of gas-emitting insulating materials. Furthermore, a strong flow of the extinguishing gas is necessary, which in turn requires a great deal of construction.
  • spark gap housing The hot, ionized gases from the arc are discharged to the outside through outlet openings in the spark gap housing. This means that at the installation location of the spark gap, certain distances to other live parts (e.g. in the electrical distribution) and combustible parts must be maintained, which enables use only under certain specifications. There are a number of options for realizing these two basic options different spark gap arrangements known.
  • a re-igniting spark gap for surge arresters with a spark quenching coil and with two electrodes arranged on an insulating base is known.
  • the spark gap is mounted in a known manner on a circular plate made of ceramic material.
  • the plate has a recessed part that forms an arcing chamber.
  • the spark gap consists of two electrodes, each of which consists of a fastening part and a spark gap part.
  • the spark gap parts diverge from the ignition point. Their opposite surfaces form discharge paths for the base points of the arc occurring between the electrodes.
  • the surfaces of the spark gap parts facing away from one another form return paths for the base points of the arc if the arc has been extended under the action of the spark quenching coil to such an extent that its base points have passed the tips of the electrodes.
  • a channel which forms a flow channel for the ionized gas of the arc.
  • These channels can be designed as channels in the plate and are covered on one side by the spark gap part.
  • the channel can consist of a hole in each electrode, so that the channel lies entirely in the electrode material. The channel opens in or in the immediate vicinity of the ignition point, where the arc is ignited when a flashover occurs.
  • This spark gap works in the following way: If the voltage rises above the ignition voltage of the spark gap, there is a flashover between the electrodes at the ignition point. Under the influence of the magnetic field of the quenching coil, which acts perpendicular to the plane of the plate, the arc is moved upwards and increases in length. If If the current lasts for a sufficiently long time, the base points of the arc move upwards, pass the ends of the spark gap parts and continue on the return paths. The arc presses ionized, hot gas all the time. When the base of the arc comes close to the channels, gas flows into the channels and to the channel mouths on the discharge paths. In this position, the length of the arc, and thus the arc voltage drop, has increased.
  • a surge arrester with a spark gap is known, the electrodes of which are kept at a distance by means of an insulating piece and which has a chamber surrounding the area of the arc discharge with walls made of insulating material which emits extinguishing gas under the action of heat.
  • the energy generated during the flashover is used to generate extinguishing gas from the insulating piece made of the appropriate insulating material in such a way that the arc is pushed away from the gap and the ionized gases are blown outwards, so that after the overvoltage has ended, no further ignition by the mains voltage can be done.
  • Disadvantages here are a relatively high structural outlay for the creation of the gas duct and the fact that the hot gases are blown out.
  • the invention is based on the object of designing a method according to the preamble of claim 1 such that an increase in the secondary current extinguishing capacity is achieved with none, or at least only with a small increase in volume of the spark gap arrangement.
  • This object is achieved on the basis of a method with the features in the preamble of claim 1 according to the invention first by adjusting the size of the follow-up current to be deleted to the volume of the interior of the housing such that a brief increase in Internal pressure of the housing is brought about to a multiple of the atmospheric pressure, the pressure increase in the interior having the electrodes being produced by the arc of the follow-up current itself.
  • the increase in the secondary current extinguishing capacity is therefore not achieved, as is already known and customary, by improved cooling of the arc, but by a pressure-dependent influencing of the arc field strength.
  • the associated increase in arc tension improves the extinguishing conditions in a surprisingly simple way.
  • the internal pressure of the housing is briefly increased to 10-60 bar. This allows the follow-up current extinguishing capacity to be quadrupled, the above-mentioned
  • the advantage of a very small volume of the interior of the housing is given.
  • An increase in the subsequent current extinguishing capacity via the previously used methods would also quadruple the arc length, but only if the required size of the interior space of the housing was quadrupled accordingly.
  • the inside of the housing can either have the aforementioned atmospheric pressure or a different internal pressure, preferably higher than the atmospheric pressure. An extinguishing gas is particularly considered. If the internal pressure in the housing deviates from the atmospheric pressure, the housing must be hermetically sealed.
  • the rest pressure of the filling gas prevails in the respective housing.
  • the resting pressure can correspond to the atmospheric pressure.
  • the filling gas can be air, but also a special extinguishing gas (eg SF6).
  • an important, synergistic effect lies in the fact that a reduction in the volume of the interior of the housing with an assumed size of the follow-up current results in a corresponding increase in the internal pressure in the housing which is advantageous for the extinguishing, and one does not is absolutely necessary to increase the length of the arc current to increase the arc voltage, as has been provided for example in the subject of DE-OS 20 07 293.
  • An increase in the length of the follow-up current arc would normally result in an increase in the volume of the above-mentioned housing interior containing the electrodes, which disadvantageously results in an assumed strength of the arc in the follow-up current which Interior pressure formed would be reduced.
  • the volume of the interior of the housing must then be chosen to be correspondingly larger.
  • the aim of the invention explained at the outset is achieved with a relatively small-volume housing, by generating the highest possible arc voltage, which counteracts the mains voltage and thus reduces the follow-up current to such a low value that it is quickly extinguished.
  • the invention is also concerned with the configuration of a spark gap arrangement according to the preamble of claim 6.
  • a closed isolating spark gap in an explosion-protected design is known, in which it is intended to prevent the spark that has jumped over from coming into contact with the outside atmosphere .
  • the spark gap has a pot-like housing made of metal, which at the same time establishes the electrical connection of the terminal to a first electrode disk.
  • a second electrode disk is electrically insulated from the first electrode disk by a mica layer and is kept at the desired distance. At this Electrode formation takes place between the outside of the second electrode and an outside counter surface of the first electrode.
  • an insulating layer which is located approximately in the area of the open bottom. It preferably consists of molded plastic, for example a cast resin. An extinguishing gas is not available. Furthermore, there is no follow current in such an isolating spark gap and therefore no problem of deleting a follow current.
  • the invention is based on the further object of designing a spark gap arrangement according to the preamble of claim 6 for carrying out the method according to one of claims 1 to 5 such that it can be used as an extinguishing spark gap and, in the event of a flashover and generation of a follow current, the best possible follow current extinguishing capability having.
  • a spark gap arrangement is provided with two electrodes, which are arranged according to DE-G 73 15 846 in the interior of a closed housing.
  • This spark gap arrangement is characterized in that the interior containing the electrodes is surrounded by a pressure-resistant housing arrangement, the volume of the interior being dimensioned and matched to the level of the subsequent current to be expected such that a pressure increase in the interior provided by the arc of the subsequent current Gas is reached to a multiple of the atmospheric pressure.
  • This gas can be air or an extinguishing gas.
  • the spark gap arrangement according to the invention can also be used as a module in single and multi-pole housing variants for indoor and outdoor use, including explosion-proof spark gap arrangements.
  • the degree of pressure increase can depend not only on the volume of the electrode space and the strength of the arc of the follow-up current, but also on the geometric design of the interior, in particular of the electrodes.
  • an increase in the internal pressure to 10-60 bar is advantageous according to claim 7.
  • a hermetically sealed housing is used, the rest pressure of which is adjustable to atmospheric normal pressure or a value deviating therefrom. By choosing this static pressure, the response voltage of the spark gap can be influenced over a wide range without design changes.
  • a mechanically fixed housing arrangement is created by the measures of claim 10.
  • the pressure-resistant cohesion of cover elements and plastic element can be achieved by gluing, screwing or similar connection techniques.
  • the housing arrangement is enclosed by an outer pressure body.
  • This pressure body has the advantages that an inexpensive manufacture is made possible and that no mechanical requirements are imposed the plastic element can be placed. This creates an additional mechanical hold of the housing arrangement and finally a mechanical relief of the cover elements is achieved by their support on the edge of the pressure body and its inner wall.
  • a type of pressure relief valve for the spark gap arrangement can also be realized, the cover elements, which are preferably made of plastic, shearing off at the flanges and the respective electrode base coming into contact with the flanging. Due to the gaps that occur, the excess pressure is released into the atmosphere.
  • the features of claim 15 have the advantage of creating thermal insulation, a separation of the mechanical and thermal requirements being achieved in a simple manner.
  • the two electrodes are held at a distance by an insulating piece. An increase in the distance leads to an increase in the response voltage.
  • the electrodes are closest to each other at their base point at which the arc arises and, proceeding from this, have a diverging profile in which the distance from one another increases as far as the free ends of the electrodes. On these diverging electrodes, the arc migrates outwards to their ends. It is lengthened and its bow tension is increased. In order to influence the subsequent current extinguishing capacity, it is thus possible to design the electrodes in such a way that the ignition of the arc is initiated as a sliding discharge at the regions of the electrode cone which are closest to one another.
  • one way of relieving the pressure in the interior is to adjust the internal pressure Housing arrangement to the atmospheric normal pressure ventilation channels are provided. By appropriately dimensioning these channels, the reduction of the excess pressure can be set over different times.
  • the inner plastic element and / or the insulating piece can finally consist of a gas-emitting material.
  • a first embodiment of the spark gap arrangement according to the invention is shown in longitudinal section in FIG. 1 and shows a hermetically sealed spark gap arrangement.
  • two electrodes 2a and 2b are arranged, which are kept at a necessary distance a by an insulating piece 3.
  • This distance also determines the response voltage of the spark gap.
  • the distance a can be changed by means not shown in detail in order to be able to set different response voltages, an increase in the distance a increasing the response voltage and this leading to a higher arc voltage.
  • the insulating piece 3 can advantageously consist of a gas-emitting plastic (eg POM) and be designed such that the ignition of the arc is initiated as a sliding discharge at the mutually facing ends of the electrode cones 2a and 2b. This causes the arc to widen in accordance with the opening angle caused by the cone shape of the electrodes 2a and 2b and thus to produce more favorable thermal and quenching properties.
  • POM gas-emitting plastic
  • the embodiment of the electrodes explained above and shown and used both in the exemplary embodiment in FIG. 1 and in the exemplary embodiment in FIG. 4 represents a preferred embodiment of the invention.
  • the arc jumps over and then moves along it Gap a her extending electrode surfaces 20 guided radially outwards. Since these electrode surfaces 20 together form a cone that widens outwards, this results in a corresponding lengthening of the arc and thus an increase in the arc voltage.
  • an increase in the internal pressure to approximately 30-50 bar is recommended.
  • the interior 1 having the electrodes is surrounded by a pressure-resistant housing arrangement 5.
  • This housing arrangement 5 is delimited pressure-tight by two cover elements 4a and 4b on the end faces of the arrangement.
  • the entire arrangement is guided and closed to the side surfaces by an inner plastic element 5a.
  • These parts 4a, 4b and 5a isolate the spark gap from an external pressure body 6 provided in this exemplary embodiment, which encloses these parts 4a, 4b and 5a in such a way that a pressure-resistant cohesion is produced.
  • the outer pressure body 6 preferably consists of a metallic piece of pipe, which can be manufactured inexpensively by flanging over its two ends which abut the covers 4a, 4b.
  • the inner plastic element 5a can consist of a gas-emitting material (e.g. POM).
  • cover elements 4a and 4b which consist of an electrically non-conductive material. They have to withstand the very large forces which are generated by the pressure in the interior 1 or the housing arrangement 5 during the surge current discharge process and during the subsequent current quenching. This applies in particular to the embodiment according to FIG. 4, which will be explained in more detail below, but since plastics which can withstand high thermal loads are generally very brittle and are therefore unsuitable for the application for the cover elements 4a and 4b, a separation of functions is achieved according to the invention carried out.
  • the thermal insulation of the hot electrodes 2a and 2b between the cover elements 4a, 4b is carried out by a thermal cutting disk 7. This measure eliminates extreme thermal demands on the cover elements 4a and 4b.
  • Ventilation channels 9 can be provided, which the above-mentioned. Alignment have adapted, appropriately small passage cross sections.
  • spark gap module Due to the fact that this module is a self-contained, non-blowing spark gap and therefore no force is exerted on another outer housing (e.g. NH fuse housing, Fig. 2), there are many possible uses even in less stable outer housings .
  • the spark gap module according to the invention can be integrated as a standard module in various housing variants, as will be described and explained in more detail below with reference to FIGS. 2 and 3. It should be pointed out at this point that the spark gap arrangement can be relatively small with the invention compared to the prior art. For example is the representation of spark gap arrangements in FIGS. 1 and 4 drawn approximately on a scale of 3: 1, ie in practical implementation these spark gaps are correspondingly smaller than they are drawn here on a DIN A4 sheet.
  • Another advantage is the possibility of supplying current via the connecting rods 2 ′ of the electrodes 2a, 2b that run axially in the direction of the longitudinal central axis 19-19. This avoids harmful current forces.
  • the housing arrangements 5 of the invention must be so pressure-resistant that they can also withstand the internal pressure that occurs only for a very short time due to the relatively high surge current; while, on the other hand, the internal pressure is significantly lower due to the explained follow-up current.
  • the further outer housings 11, 13 explained below do not have to withstand any internal pressure, since this is carried out by the spark gap arrangement.
  • the insulating washers 7 come into contact with the flanges 6 'of the pressure body 6 and prevent the electrodes 2a and 2b from being pressed out. With the shearing off of the above-mentioned parts along the lines 18 creates so much through openings between the interior 1 and the outside air that the excess pressure which arises in the interior rapidly dissipates.
  • the spark gap arrangement 10 is installed in an NH fuse housing 11, which is shown in the closed (FIG. 2) and open (FIG. 2a) state.
  • the fuse housing 11 consists of two half-shells 11a and 11b and has pull-out tabs 12.
  • the electrical contacting of the live conductor or earth is carried out by standardized NH contact blades, which are designated 2a and 2b.
  • FIG. 3a the multi-pole variant of an arrangement of spark gap arrangements 10 in a special outer housing 13 is shown. Since the blowout required in the prior art is omitted in the spark gap arrangements according to the invention, the hermetically sealed spark gaps (FIG. 1) or pressure-tight spark gaps (FIG. 4) can be arranged more closely and an outer housing surrounding them can be made less stable. 3 shows, for example, three spark gap arrangements 10 are integrated in a space-saving, spatial arrangement. This results in a favorable utilization factor of the inner volume of the outer housing 13.
  • the earth-side connection of the individual elements can be realized by an inexpensive, common earth plate 17.
  • the outer housing 13 can be mounted on a standard mounting rail by means of snap fasteners 14.
  • connection options for cable feed 15 (FIG. 3a) or a comb rail 16 (FIG. 3).
  • the connection options for the current-carrying conductors are constructed in a modular distance dimension such that the three connections 15 and 16 for the current-carrying conductors are provided on one side and the earth connection 21 on the opposite side.
  • FIG. 4 shows a second embodiment of the spark gap arrangement according to the invention.
  • the outer pressure body 6 provided for a hermetic seal according to FIG. 1 has been omitted.
  • the inner plastic element 5a and the two cover elements 4a and 4b are to be designed such that these parts 5a, 4a and 4b replace the function of the outer pressure element 6 which is omitted here insofar as the required pressure-resistant cohesion over these parts 5a, 4a and 4b is achieved.
  • the cover elements 4a and 4b are glued along the common surface (path A-E), or the partial surfaces (path B-C or D-E) are provided with a fine thread and screwed. Instead, riveting or pinning can also take place.
  • the aforementioned connection techniques can be combined.
  • metal or a correspondingly highly stable plastic lends itself as the material for the cover elements 4a and 4b.
  • plastic covers 4a and 4b it is advantageous that an insulating outer shell is created, which can be advantageous in some applications (e.g. protection against contact).

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Spark Plugs (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP96118511A 1996-02-10 1996-11-19 Méthode pour influencer la capacité d'extinction de courant de suivi pour dispositifs parafoudres et dispositifs parafoudre utilisant cette méthode Revoked EP0789434B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19604947A DE19604947C1 (de) 1996-02-10 1996-02-10 Verfahren zur Beeinflussung des Folgestromlöschvermögens von Funkenstreckenanordnungen und Funkenstreckenanordnungen hierfür
DE19604947 1996-02-10

Publications (2)

Publication Number Publication Date
EP0789434A1 true EP0789434A1 (fr) 1997-08-13
EP0789434B1 EP0789434B1 (fr) 2000-07-05

Family

ID=7785086

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Application Number Title Priority Date Filing Date
EP96118511A Revoked EP0789434B1 (fr) 1996-02-10 1996-11-19 Méthode pour influencer la capacité d'extinction de courant de suivi pour dispositifs parafoudres et dispositifs parafoudre utilisant cette méthode

Country Status (4)

Country Link
EP (1) EP0789434B1 (fr)
AT (1) ATE194438T1 (fr)
DE (3) DE19604947C1 (fr)
DK (1) DK0789434T3 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19818674B4 (de) * 1998-04-27 2004-04-29 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
DE10008764A1 (de) * 1999-03-04 2000-09-28 Phoenix Contact Gmbh & Co Überspannungsschutzeinrichtung
DE10066231B4 (de) * 2000-02-22 2006-10-12 Dehn + Söhne Gmbh + Co. Kg Druckfest gekapselte Funkenstreckenanordnung zum Ableiten von schädlichen Störgrößen durch Überspannungen
DE10018012B4 (de) * 2000-02-22 2005-02-24 Dehn + Söhne Gmbh + Co. Kg Druckfest gekapselte Funkenstreckenanordnung zum Ableiten von schädlichen Störgrößen durch Überspannungen
DE10025239C2 (de) * 2000-05-22 2002-06-27 Dehn & Soehne Teil- oder vollgekapselte Funkenstreckenableiter
DE10058977B4 (de) * 2000-11-28 2005-02-10 Dehn + Söhne Gmbh + Co. Kg Mehrpoliger stoßstromfester Überspannungsableiter
DE10118210B4 (de) * 2001-04-11 2012-02-23 Dehn + Söhne Gmbh + Co. Kg Gekapselter Überspannungsableiter mit einer Funkenstreckenanordnung
US7271992B2 (en) 2000-11-28 2007-09-18 Dehn + Soehne Gmbh + Co. Kg Compact arrangement for multipole, surge-proof surge arresters and encapsulated surge arrester for the same
DE10157817B4 (de) * 2000-11-29 2011-12-22 Dehn + Söhne Gmbh + Co. Kg Modulares System zum Aufbau einer Trennfunkenstrecke zur Anpassung der Trennfunkenstrecke an unterschiedliche elektrische und mechanische Anforderungen
WO2003019744A1 (fr) * 2001-08-21 2003-03-06 Dehn + Söhne Gmbh + Co. Kg Dechargeur encapsule limitant le courant de suite de secteur conçu sous forme d'eclateur a etincelle
DE10164025B4 (de) * 2001-08-21 2005-08-25 Dehn + Söhne Gmbh + Co. Kg Gekapselter, Netzfolgestrom begrenzender Überspannungsableiter auf Funkenstreckenbasis
DE10212697A1 (de) * 2001-12-17 2003-07-10 Phoenix Contact Gmbh & Co Überspannungsschutzeinrichtung
DE10338835B4 (de) * 2003-08-21 2016-06-02 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzeinrichtung
DE102004006988B4 (de) 2003-11-28 2014-02-06 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzeinrichtung auf Funkenstreckenbasis, umfassend mindestens zwei in einem druckdichten Gehäuse befindliche Hauptelektroden
DE10357945A1 (de) 2003-12-09 2005-07-14 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzeinrichtung
DE102005015401B4 (de) * 2005-01-10 2014-03-20 Dehn + Söhne Gmbh + Co. Kg Überspannungsableiter mit zwei divergierenden Elektroden und einer zwischen den Elektroden wirkenden Funkenstrecke
DE102007012760B4 (de) * 2006-09-22 2015-03-05 Dehn + Söhne Gmbh + Co. Kg Überspannungsableiter mit Reiheneinbaugehäuse
DE102007015930A1 (de) * 2007-01-04 2008-07-10 Dehn + Söhne Gmbh + Co. Kg Gekapselte, druckfest ausgeführte, nicht hermetisch dichte, rotationssymmetrische Hochleistungsfunkenstrecke
DE102008031113B4 (de) * 2008-01-08 2015-03-05 Dehn + Söhne Gmbh + Co. Kg Funkenstreckenanordnung mit mindestens zwei Elektroden
DE102014104576B4 (de) * 2014-04-01 2016-02-11 Phoenix Contact Gmbh & Co. Kg Überspannungsableiter
DE102017119288B4 (de) 2017-05-10 2023-03-23 Dehn Se Gekapselter Überspannungsableiter auf Funkenstreckenbasis

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DE1282153B (de) * 1959-10-27 1968-11-07 Ind D Soule Ets Loeschfunkenstrecke
DE2007293A1 (de) 1969-02-21 1971-02-11 Allmanna Svenska Elektriska AB, Vasteras (Schweden) Wiederzundende Funkenstrecke
DE7315846U (de) 1973-04-26 1973-09-13 Dehn & Soehne Geschlossene Funkenstrecke
EP0024584A1 (fr) * 1979-08-24 1981-03-11 ANT Nachrichtentechnik GmbH Dispositif de dérivation de surtensions avec éclateur

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US3849704A (en) * 1972-10-27 1974-11-19 Franklin Electric Co Inc Lightning arrestor
DD279120A1 (de) * 1988-12-28 1990-05-23 Energieversorgung Ingbetrieb Druckentlastungsvorrichtung fuer ueberspannungsableiter in mittelspannungsanlagen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1282153B (de) * 1959-10-27 1968-11-07 Ind D Soule Ets Loeschfunkenstrecke
DE2007293A1 (de) 1969-02-21 1971-02-11 Allmanna Svenska Elektriska AB, Vasteras (Schweden) Wiederzundende Funkenstrecke
US3688155A (en) * 1969-02-21 1972-08-29 Asea Ab Reigniting spark gap device including a flow-through channel
DE7315846U (de) 1973-04-26 1973-09-13 Dehn & Soehne Geschlossene Funkenstrecke
EP0024584A1 (fr) * 1979-08-24 1981-03-11 ANT Nachrichtentechnik GmbH Dispositif de dérivation de surtensions avec éclateur
DE2934236A1 (de) 1979-08-24 1981-03-26 Ant Nachrichtentechnik Gmbh, 71522 Backnang Ueberspannungsableiter mit funkenstrecke

Also Published As

Publication number Publication date
DE19655119C2 (de) 2001-01-25
EP0789434B1 (fr) 2000-07-05
DK0789434T3 (da) 2000-11-13
DE19604947C1 (de) 1997-07-10
DE59605543D1 (de) 2000-08-10
ATE194438T1 (de) 2000-07-15

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