EP0024583A1 - Overvoltage arrester - Google Patents

Overvoltage arrester Download PDF

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Publication number
EP0024583A1
EP0024583A1 EP80104592A EP80104592A EP0024583A1 EP 0024583 A1 EP0024583 A1 EP 0024583A1 EP 80104592 A EP80104592 A EP 80104592A EP 80104592 A EP80104592 A EP 80104592A EP 0024583 A1 EP0024583 A1 EP 0024583A1
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EP
European Patent Office
Prior art keywords
electrodes
spacer
arc discharge
surge arrester
chamber
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Granted
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EP80104592A
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German (de)
French (fr)
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EP0024583B1 (en
Inventor
Peter Dr.-Ing. Hasse
Johannes Prof. Dr.-Ing. Wiesinger
Erich Dr.-Ing. Pivit
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Bosch Telecom GmbH
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ANT Nachrichtentechnik GmbH
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Publication of EP0024583A1 publication Critical patent/EP0024583A1/en
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    • 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

Definitions

  • the invention relates to a surge arrester consisting of a gas, in particular air spark gap with a spacer for the electrodes consisting of insulating material and a chamber adjoining the area of the arc discharge, the walls of which are formed by the two electrodes and the spacer.
  • Such surge arresters are known, for example from the article "Protection of electronic and communications systems by means of spark gaps" from bark-Elektronik 4-1979, pp. 127 to 130.
  • the spark gaps described in this article are usually two- or three-electrode spark gaps with one hermetically sealed gas filling.
  • Such spark gaps are suitable for protecting telecommunications cables or receiving antennas against lightning flashovers, but they only suffice for operational insulation, but not the increased requirements for protective insulation.
  • an overvoltage protection for telecommunications lines which consists of a spark gap between two carbon electrodes, with a region being provided around the area of the arc discharge, which serves as an outlet for particles that pass from the electrodes into the Break out the arc gap.
  • This spark gap also only suffices for operational insulation and, moreover, has a very limited service life.
  • the object of the invention was therefore to provide a surge arrester of the type mentioned at the outset, the insulation resistance, the dielectric strength and the reliability thereof in the non-ignited state of the protective insulation according to VDE regulation 0845 are equivalent, the response voltage is lower than the dielectric strength of the protective insulation, that in the ignited state the voltage is limited to non-hazardous values and which can take up the full lightning current several times without its functions being impaired to such an extent that the above-mentioned requirements are no longer met by vaporizing the spacer relevant for the protective insulation with electrically conductive plasma particles and thus Decrease in its insulation resistance is prevented or inhibited.
  • the surge arrester according to the invention has the advantages that high leakage currents can be dissipated through it, that there is high dielectric strength, high reliability and high insulation resistance in the non-ignited state and that these properties are retained even after many strong lightning loads.
  • the surge arrester therefore fulfills the basic requirements for protective insulation, provided that its response voltage is correspondingly lower than the dielectric strength of the protective insulation, which can be achieved with known means.
  • a suitable combination with arresters which meet the requirements for operational insulation and which can automatically extinguish the arc of the mains current after ignition by an overvoltage in accordance with the requirement of VDE 0675 Part 1, according to the patent .
  • the surge arrester according to the invention can thus fully meet the requirements for protective insulation, which are neither additional grounding or potential equalization measures required (see patent . « (application P . «, BK 79/55, registered by DEHN + S ⁇ HNE and AEG-TELEFUNKEN AKTIENGESELLSCHAFT, registration priority as the present application)).
  • FIG. 1 shows an advantageous embodiment of the invention, namely a rotationally symmetrical arrangement of the perforated disk-shaped electrode 1 and the fully cylindrical electrode 2 arranged underneath with a chamfered inner or outer edge 8.
  • the area 3 of the arc discharge which is in the unignited state is gas, preferably air insulated.
  • the spacer 4 between the outer edge of the disk-shaped lower extension of the electrode 2 and the outer edge of the electrode 1 is far from the area of the arc discharge.
  • the pressurized arisen during the arc discharge For the most part, gases can escape upwards into the open. However, it cannot be avoided that a smaller part of the gases is pressed into the chamber 5 formed by the electrodes and spacers.
  • This chamber is labyrinthine in such a way that an artificial extension of the path of the gases to the spacer and cooling takes place.
  • This has the advantage that the evaporation of the inner surface of the spacer is prevented by metal particles torn out of the electrodes during the arc discharge, or can be carried out very slightly, which is an essential prerequisite for permanent and unrestrictedly effective protective insulation.
  • the cooling is carried out by the heat-dissipating metal walls of the labyrinth, which are insulated on the electrodes 1 and 2 in order to prevent the arc discharge from spreading to the labyrinth area (6, 7).
  • Such a labyrinth arrangement makes it possible for the gases generated during the arc discharge to be able to be deposited on the labyrinth walls for the most part, so that the insulation value of the spacer and thus the spark gap does not deteriorate significantly even after many heavy lightning current stresses.
  • a suitable electrode material for example tungsten copper, which has a high resistance to burnout, the wear can advantageously be kept very low.
  • the arc can be held stably in the air gap provided for this purpose and thus also a vaporization of the distance insulator can be counteracted.
  • the right half of Figure 2 shows another embodiment of the invention.
  • the lower electrode 2 protrudes with its end face 9 and its outer lateral surface 10 far into the opening of the hollow cylindrical electrode 1, so that the arch relief in region 3 can unfold between the opposite parts of the cylindrical lateral surfaces 10:
  • the labyrinth 5 is Phase surface 8, from the end surface 9, from the outer lateral surface and from the lower part of the disk-shaped extension of the electrode 1 adjoining the upper end of the hollow cylinder, and from metal walls 7 which are attached to a disk-shaped insulating body 6a surrounding the electrode 2, and formed by the outwardly delimiting spacer 4.
  • FIG. 2 shows the cross section through another surge arrester according to the invention, in which the end faces 9 of the two cylindrical electrodes 1 and 2 enclose the area of the arc discharge.
  • This arrangement keeps the discharge particularly stable, so that the spacer 4 can be vaporized even less.
  • the well-formed labyrinth 5 consists of three chambers which surround the electrode 2 by three metal walls 7, one in the form of a disk Send insulating piece 6a, on which two of the metal walls 7 are attached, and an insulating piece 6, with which the third metal wall is attached to the upper electrode 1, are formed.

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  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

Überspannungsableiter, bestehend aus einer Gas-, insbesondere Luft-Funkenstrecke mit aus Isolierstoff bestehendem Abstandshalter für die Elektroden und einer an den Bereich der Bogenentladung sich anschliessenden Kammer, deren Wände von den beiden Elektroden und dem Abstandshalter gebildet werden, dadurch gekennzeichnet, dass die Kammer (5) derart ausgebildet ist, dass die durch die Bogenentladung eststehenden Gase auf ihrem Weg zum Abstandshalter (4) labyrinthartig umgelenkt werden.Surge arrester, consisting of a gas, in particular air, spark gap with a spacer made of insulating material for the electrodes and a chamber adjoining the area of the arc discharge, the walls of which are formed by the two electrodes and the spacer, characterized in that the chamber ( 5) is designed such that the gases produced by the arc discharge are deflected like a labyrinth on their way to the spacer (4).

Description

Die Erfindung betrifft einen Überspannungsableiter, bestehend aus einer Gas-, insbesondere Luft-Funkenstrecke mit aus Isolierstoff bestehendem Abstandshalter für die Elektroden und einer an den Bereich der Bogenentladung sich anschliessenden Kammer, deren Wände von den beiden Elektroden und dem Abstandshalter gebildet werden.The invention relates to a surge arrester consisting of a gas, in particular air spark gap with a spacer for the electrodes consisting of insulating material and a chamber adjoining the area of the arc discharge, the walls of which are formed by the two electrodes and the spacer.

Solche Überspannungsableiter sind bekannt, beispielsweise durch den Aufsatz "Schutz elektronischer und nachrichtentechnischer Systeme mittels Funkenstrecke" aus Nachrichten-Elektronik 4-1979, S. 127 bis 130. Die in diesem Aufsatz beschriebenen Funkenstrecken sind zumeist Zwei- oder Drei-Elektroden-Funkenstrecken mit einer hermetisch abgeschlossenen Gasfüllung. Solche Funkenstrecken eignen sich zum Schutze von Fernmeldekabeln oder Empfangsantennen vor Blitz- überschlägen, genügen jedoch nur einer Betriebsisolierung, nicht aber den erhöhten Anforderungen einer Schutzisolierung.Such surge arresters are known, for example from the article "Protection of electronic and communications systems by means of spark gaps" from Nachrichten-Elektronik 4-1979, pp. 127 to 130. The spark gaps described in this article are usually two- or three-electrode spark gaps with one hermetically sealed gas filling. Such spark gaps are suitable for protecting telecommunications cables or receiving antennas against lightning flashovers, but they only suffice for operational insulation, but not the increased requirements for protective insulation.

Durch die DE-OS 26 41 858 ist ebenfalls ein Überspannungsschutz für Fernmeldeleitungen bekannt geworden, der aus einer Funkenstrecke zwischen zwei Kohleelektroden besteht, wobei um den Bereich der Bogenentladung ein Bezirk vorgesehen ist, der als Auslaß für Partikel dient, die von den Elektroden in den Lichtbogenspalt ausbrechen. Auch diese Funkenstrecke genügt nur der Betriebsisolierung und hat überdies nur eine sehr begrenzte Lebensdauer.From DE-OS 26 41 858 an overvoltage protection for telecommunications lines is also known, which consists of a spark gap between two carbon electrodes, with a region being provided around the area of the arc discharge, which serves as an outlet for particles that pass from the electrodes into the Break out the arc gap. This spark gap also only suffices for operational insulation and, moreover, has a very limited service life.

Aufgabe der Erfindung war es deshalb, einen Überspannungsableiter der eingangs genannten Art anzugeben, dessen Isolationswiderstand, dessen Spannungsfestigkeit und dessen Zuverlässigkeit im ungezündeten Zustand der Schutzisolierung nach VDE-Bestimmung 0845 gleichwertig sind, dessen Ansprechspannung niedriger ist als die Spannungsfestigkeit der Schutzisolierung, der im gezündeten Zustand die Spannung auf ungefährliche Werte begrenzt und der mehrmals den vollen Blitzstrom aufnehmen kann, ohne daß seine Funktionen so weit beeinträchtigt werden, daß die oben genannten Forderungen nicht mehr erfüllt sind, indem ein Bedampfen des für die Schutzisolierung maßgeblichen Abstandshalters mit elektrisch leitenden Plasmateilchen und damit ein Absinken dessen Isolationswiderstandes verhindert oder gehemmt wird.The object of the invention was therefore to provide a surge arrester of the type mentioned at the outset, the insulation resistance, the dielectric strength and the reliability thereof in the non-ignited state of the protective insulation according to VDE regulation 0845 are equivalent, the response voltage is lower than the dielectric strength of the protective insulation, that in the ignited state the voltage is limited to non-hazardous values and which can take up the full lightning current several times without its functions being impaired to such an extent that the above-mentioned requirements are no longer met by vaporizing the spacer relevant for the protective insulation with electrically conductive plasma particles and thus Decrease in its insulation resistance is prevented or inhibited.

Die Lösung erfolgt mit den in den Patentansprüchen angegebenen Mitteln.The solution is achieved with the means specified in the claims.

Der erfindungsgemäße Überspannungsableiter hat die Vorteile, daß durch ihn hohe Ableitströme abgeführt werden können, daß im ungezündeten Zustand hohe Spannungsfestigkeit, große Zuverlässigkeit und hoher Isolationswiderstand vorliegen und daß diese Eigenschaften auch nach vielen starken Blitzbelastungen erhalten bleiben. Der Überspannungsableiter erfüllt danit die Grundvoraussetzungen für die Schutzisolierung, sofern seine Ansprechspannung entsprechend niedriger als die Spannungsfestigkeit der Schutzisolierung ist, was mit bekannten Mitteln erreicht werden kann. In geeigneter Kombination mit Ableitern,.d.ie den Anforderungen der Betriebsisolierung genügen und die entsprechend der Forderung nach VDE 0675 Teil 1 nach der Zündung durch eine Überspannung den-Lichtbogen des Netzstromes selbständig löschen können, nach Patent ....... (Anmeldung P ......., BK 79/66, angemeldet von DEHN +SÖHNE und AEG-TELEFUNKEN AKTIENGESELLSCHAFT, Anmeldepriorität wie vorliegende Anmeldung) bzw. nach Patent ....... (Anmeldung P ......., Zusatzanmeldung zu P 23 37 743 bzw. P 26 27 648, angemeldet von DEHN + SÖHNE mit gleicher Priorität wie vorliegende Anmeldung), kann damit der erfindungsgemäße Überspannungsableiter voll und ganz die Forderungen einer Schutzisolierung, die weder zusätzliche Erdungs- bzw. Potentialausgleichsmaßnahmen erfordert, erfüllen (siehe Patent ....... (Anmeldung P......., BK 79/55, angemeldet von DEHN + SÖHNE und AEG-TELEFUNKEN AKTIENGESELLSCHAFT, Anmeldepriorität wie vorliegende Anmeldung)).The surge arrester according to the invention has the advantages that high leakage currents can be dissipated through it, that there is high dielectric strength, high reliability and high insulation resistance in the non-ignited state and that these properties are retained even after many strong lightning loads. The surge arrester therefore fulfills the basic requirements for protective insulation, provided that its response voltage is correspondingly lower than the dielectric strength of the protective insulation, which can be achieved with known means. In a suitable combination with arresters, which meet the requirements for operational insulation and which can automatically extinguish the arc of the mains current after ignition by an overvoltage in accordance with the requirement of VDE 0675 Part 1, according to the patent ....... ( Registration P ......., BK 79/66, registered by DEHN + SÖHNE and AEG-TELEFUNKEN AKTIENGESELLSCHAFT, registration priority as present application) or according to patent ....... (registration P ..... .., additional application for P 23 37 743 or P 26 27 648, registered by DEHN + SÖHNE with the same priority as the present application), the surge arrester according to the invention can thus fully meet the requirements for protective insulation, which are neither additional grounding or potential equalization measures required (see patent ....... (application P ......., BK 79/55, registered by DEHN + SÖHNE and AEG-TELEFUNKEN AKTIENGESELLSCHAFT, registration priority as the present application)).

Es folgt nun die Beschreibung der Erfindung anhand der Figuren.There now follows the description of the invention with reference to the figures.

Die Figur 1 zeigt eine vorteilhafte Ausführungsform der Erfindung, nämlich eine rotationssymmetrische Anordnung der lochscheibenförmigen Elektrode'1 und der darunter angeordneten vollzylinderförmigen Elektrode 2 mit angephaster Innen- bzw. Außenkante 8. Zwischen diesen beiden Phasenflächen liegt der Bereich 3 der Bogenentladung, der im ungezündeten Zustand gas-, vorzugsweise luftisoliert ist. Der Abstandshalter 4 zwischen dem äußeren Rand des scheibenförmigen unteren Fortsatzes der Elektrode 2 und dem äußeren Rand der Elektrode 1 liegt weitab vom Bereich der Bogenentladung. Die bei der Bogenentladung entstehenden, unter Druck stehenden Gase können zum überwiegenden Teil nach oben ins Freie austreten. Es läßt sich jedoch nicht vermeiden, daß ein kleinerer Teil der Gase in die von den Elektroden und Abstandshalter gebildete Kammer 5 gedrückt wird. Diese Kammer ist labyrinthmäßig so ausgebildet, daß eine künstliche Verlängerung des Weges der Gase zum Abstandshalter sowie eine Kühlung erfolgt. Das hat den Vorteil, daß die Bedampfung der inneren Oberfläche des Abstandshalters durch bei der Bogenentladung aus den Elektroden herausgerissene Metallpartikel verhindert wird.oder ganz geringfügig erfolgen kann, was unbedingte Voraussetzung für eine dauerhaft und uneingeschränkt wirksame Schutzisolierung ist. Die Kühlung erfolgt durch die Wärme gut ableitende Metallwände des Labyrinths, die, um eine Ausbreitung der Bogenentladung auf den Labyrinthbereich zu vernhindern, isoliert an den Elektroden 1 bzw. 2 angebracht sind (6, 7). Durch eine solche Labyrinthanordnung wird ermöglicht, daß die bei der Bogenentladung entstehenden Gase sich größtenteils schon eingangs an den Labyrinthwänden niederschlagen können, so daß sich der Isolationswert des Abstandshalters und damit der Funkenstrecke auch nach vielen starken Blitzstrombeanspruchungen nicht wesentlich verschlechtert. Vorteilhafterweise kann durch Verwendung eines geeigneten Elektrodenmaterials, beispielsweise Wolframkupfer, das eine hohe Widerstandsfähigkeit gegen Ausbrennen aufweist, der Verschleiß sehr gering gehalten werden.FIG. 1 shows an advantageous embodiment of the invention, namely a rotationally symmetrical arrangement of the perforated disk-shaped electrode 1 and the fully cylindrical electrode 2 arranged underneath with a chamfered inner or outer edge 8. Between these two phase areas is the area 3 of the arc discharge, which is in the unignited state is gas, preferably air insulated. The spacer 4 between the outer edge of the disk-shaped lower extension of the electrode 2 and the outer edge of the electrode 1 is far from the area of the arc discharge. The pressurized arisen during the arc discharge For the most part, gases can escape upwards into the open. However, it cannot be avoided that a smaller part of the gases is pressed into the chamber 5 formed by the electrodes and spacers. This chamber is labyrinthine in such a way that an artificial extension of the path of the gases to the spacer and cooling takes place. This has the advantage that the evaporation of the inner surface of the spacer is prevented by metal particles torn out of the electrodes during the arc discharge, or can be carried out very slightly, which is an essential prerequisite for permanent and unrestrictedly effective protective insulation. The cooling is carried out by the heat-dissipating metal walls of the labyrinth, which are insulated on the electrodes 1 and 2 in order to prevent the arc discharge from spreading to the labyrinth area (6, 7). Such a labyrinth arrangement makes it possible for the gases generated during the arc discharge to be able to be deposited on the labyrinth walls for the most part, so that the insulation value of the spacer and thus the spark gap does not deteriorate significantly even after many heavy lightning current stresses. By using a suitable electrode material, for example tungsten copper, which has a high resistance to burnout, the wear can advantageously be kept very low.

Bei entsprechender Ausbildungsform der Elektroden kann der Lichtbogen stabil in dem dafür vorgesehenen Luftspalt gehalten und damit ebenfalls einer Bedampfung des Abstandsisolators entgegengewirkt werden.With an appropriate design of the electrodes, the arc can be held stably in the air gap provided for this purpose and thus also a vaporization of the distance insulator can be counteracted.

Vorteilhaft wirkt sich nach Beendigung der Entladung aus, daß die Luft-Funkenstrecke aufgrund des Kammerüberdruckes von innen nach außen durchblasen und dabei gereinigt wird. Typisch für Überspannungsableiter, die nach der Lehre der vorliegenden Erfindung gebaut wurden, ist, daß dieselben nach einer akkumulierten Belastung, die etwa tausend statistisch gemittelten Blitzen entspricht, jedoch auch überdurchscnittliche Bltzstrombeanspruchungen einschließt, immer noch voll funktionsfähig sind und einen Isolationswiderstand von > 1010Q aufweisen. Eine Verschmelzung der Elektroden oder auch nur geringe Ansätze dazu können nicht festgestellt werden.After the discharge has ended, the fact that the air spark gap blows from inside to outside due to the chamber overpressure and is thereby cleaned has an advantageous effect. Typical for surge arresters that were built according to the teaching of the present invention is that after an accumulated load, which corresponds to about a thousand statistically averaged flashes, but also includes above-average lightning current stresses, they are still fully functional and have an insulation resistance of> 10 10 Q exhibit. A fusion of the electrodes or even only slight approaches to it cannot be determined.

Die rechte Hälfte der Figur 2 zeigt ein anderes Ausführungsbeispiel der Erfindung. Hier ragt die untere Elektrode 2 mit ihrer Stirnseite 9 und ihrer äußeren Mantelfläche 10 weit in die öffnung der hohlzylinderförmigen Elektrode 1 hinein, so daß sich die Bogenentlastung im Bereich 3 zwischen den gegenüberliegenden Teilen der Zylindermantelflächen 10 entfalten kann: Das Labyrinth 5 wird einerseits von der Phasenfläche 8, von der Stirnfläche 9, von der äußeren Mantelfläche und von dem unteren Teil der am oberen Ende des Hohlzylinders sich anschließenden scheibenförmigen Erweiterung der Elektrode 1 sowie von Metallwänden 7, die an einem scheibenförmig ausgebildeten, die Elektrode 2 umschließenden Isolierkörper 6a angebracht sind, und durch den nach außen begrenzenden Abstandshalter 4 gebildet.The right half of Figure 2 shows another embodiment of the invention. Here, the lower electrode 2 protrudes with its end face 9 and its outer lateral surface 10 far into the opening of the hollow cylindrical electrode 1, so that the arch relief in region 3 can unfold between the opposite parts of the cylindrical lateral surfaces 10: the labyrinth 5 is Phase surface 8, from the end surface 9, from the outer lateral surface and from the lower part of the disk-shaped extension of the electrode 1 adjoining the upper end of the hollow cylinder, and from metal walls 7 which are attached to a disk-shaped insulating body 6a surrounding the electrode 2, and formed by the outwardly delimiting spacer 4.

Die linke Hälfte der Figur 2 zeigt den Querschnitt durch einen anderen erfindungsgemäßen Überspannungsableiter, bei dem die Stirnseiten 9 der beiden zylinderförmigen Elektroden 1 und 2 den Bereich der Bogenentladung einschließen. Durch diese Anordnung wird die Entladung besonders stabil gehalten, so daß eine Bedampfungsmöglichkeit des Abstandshalters 4 noch geringer ist. Das gut ausgebildete Labyrinth 5 besteht aus drei Kammern, die von drei Metallwänden 7, einem scheibenförmigen, die Elektrode 2 umschliessenden Isolierstück 6a, an dem zwei der Metallwände 7 befestigt sind, und einem Isolierstück 6, mit dem die dritte Metallwand an der oberen Elektrode 1 befestigt ist, gebildet werden.The left half of FIG. 2 shows the cross section through another surge arrester according to the invention, in which the end faces 9 of the two cylindrical electrodes 1 and 2 enclose the area of the arc discharge. This arrangement keeps the discharge particularly stable, so that the spacer 4 can be vaporized even less. The well-formed labyrinth 5 consists of three chambers which surround the electrode 2 by three metal walls 7, one in the form of a disk Send insulating piece 6a, on which two of the metal walls 7 are attached, and an insulating piece 6, with which the third metal wall is attached to the upper electrode 1, are formed.

Claims (6)

1. Überspannungsableiter, bestehend aus einer Gas-, insbesondere Luft-Funkenstrecke mit aus Isolierstoff bestehendem Abstandshalter für die Elektroden und einer an den Bereich der Bogenentladung sich anschließenden Kammer, deren Wände von den beiden Elektroden und dem Abstandshalter gebildet werden, dadurch gekennzeichnet, daß die Kammer (5) derart ausgebildet ist, daß die durch die Bogenentladung entstehenden Gase auf ihrem Weg zum Abstandshalter (4) labyrinthartig umgelenkt werden.1. Surge arrester, consisting of a gas, in particular air spark gap with spacer made of insulating material for the electrodes and a chamber adjoining the area of the arc discharge, the walls of which are formed by the two electrodes and the spacer, characterized in that the Chamber (5) is designed in such a way that the gases produced by the arc discharge are deflected like a labyrinth on their way to the spacer (4). 2. Überspannungsableiter nach Anspruch 1, dadurch gekennzeichnet, daß die Kammer (5) gut wärmeleitende Wände (7, 9, 10) aufweist.2. Surge arrester according to claim 1, characterized in that the chamber (5) has heat-conducting walls (7, 9, 10). 3. Überspannungsableiter nach Anspruch 2, dadurch gekennzeichnet, daß die Wände gegen die Elektroden (1, 2) isolierte (6) Metallwände (7) sind.3. Surge arrester according to claim 2, characterized in that the walls against the electrodes (1, 2) insulated (6) are metal walls (7). 4. Überspannungsableiter nach Anspruch 3, dadurch gekennzeichnet, daß der Abstandshalter (4) vom Bogenentladungsbereich (3) entfernt angeordnet ist.4. Ü b voltage arrester according to claim 3, characterized in that the spacer (4) from the arc discharge region (3) is arranged away. 5. Überspannungsableiter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Kammer (5) rotationssymmetrisch angeordnet ist, wobei die eine Elektrode (1) als Hohl- und die andere (2) als Vollzylinder mit jeweils angephaster (8) Innen- bzw. Außenkante ausgebildet sind und wobei die Anordnung der Elektroden (1, 2) so erfolgt, daß sich der Bereich (3) der Bogenentladung hauptsächlich zwischen den sich gegenüberliegenden Stirn-(9), Mantel- (10) oder Phasenflächen (8) befindet.5. Surge arrester according to one of the preceding claims, characterized in that the chamber (5) is arranged rotationally symmetrically, the one electrode (1) as a hollow and the other (2) as a solid cylinder, each with a chamfered (8) inside or Outer edge are formed and the arrangement of the electrodes (1, 2) is such that the area (3) of the arc discharge is mainly between the opposite end (9), jacket (10) or phase surfaces (8). 6. Überspannungsableiter nach einem der vorhergehenden Ansprüche, gekennzeichnet durch Elektroden (1, 2) aus Metall-Legierungen mit oher Widerstandsfähigkeit gegen Abbrand.6. Surge arrester according to one of the preceding claims, characterized by electrodes (1, 2) made of metal alloys with high resistance to erosion.
EP80104592A 1979-08-24 1980-08-04 Overvoltage arrester Expired EP0024583B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2934237 1979-08-24
DE2934237A DE2934237C2 (en) 1979-08-24 1979-08-24 Surge arresters

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EP0024583A1 true EP0024583A1 (en) 1981-03-11
EP0024583B1 EP0024583B1 (en) 1984-05-02

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US (1) US4345293A (en)
EP (1) EP0024583B1 (en)
CA (1) CA1161106A (en)
DE (1) DE2934237C2 (en)
DK (1) DK155396C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987004017A1 (en) * 1985-12-18 1987-07-02 Cerberus Ag Spark gap, in particular for use as a pre-spark gap of a spark plug of an internal combustion engine
EP0874430A2 (en) * 1997-04-26 1998-10-28 Dehn + Söhne Gmbh + Co. Kg Spark gap
DE10140950A1 (en) * 2001-08-01 2003-02-27 Dehn & Soehne Encapsulated voltage surge absorber based on a spark gap for protecting against surges has disk-shaped facing electrodes with big surfaces to form a rotationally symmetrical makeup and an arc discharge gap between the electrodes

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2934235A1 (en) * 1979-08-24 1981-03-26 Ant Nachrichtentechnik Gmbh, 71522 Backnang MAINS CONNECTION WITH SURGE PROTECTORS
EP0242688B1 (en) * 1986-04-22 1990-07-18 Siemens Aktiengesellschaft Surge arrester
US4860300A (en) * 1987-06-03 1989-08-22 Lambda Physik Forschungs- Und Entwicklungsgesellschaft Mb Electrode for pulsed gas lasers
DE3910435A1 (en) * 1989-02-25 1990-08-30 Phoenix Elekt Overvoltage protection device
DE19506057B4 (en) * 1995-02-22 2004-07-22 Dehn + Söhne GmbH + Co KG Extinguishing spark gap arrangement
DE10357945A1 (en) * 2003-12-09 2005-07-14 Phoenix Contact Gmbh & Co. Kg Overvoltage protection device
DE102005024658B4 (en) * 2005-05-30 2007-02-15 Dehn + Söhne Gmbh + Co. Kg Encapsulated, flameproof, non-hermetically sealed, rotationally symmetric high-performance spark gap
DE102006048977B4 (en) * 2005-05-30 2017-02-23 Dehn + Söhne Gmbh + Co. Kg Encapsulated, flameproof, non-hermetically sealed, rotationally symmetric high-performance spark gap
DE102005036265A1 (en) * 2005-08-02 2007-02-08 Epcos Ag radio link
CN101529677B (en) * 2006-10-17 2012-01-04 德恩及索恩两合股份有限公司 high-power spark gap
DE102007015931A1 (en) * 2007-01-04 2008-07-10 Dehn + Söhne Gmbh + Co. Kg Encapsulated, flameproof, non-hermetically sealed, rotationally symmetric high-performance spark gap
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WO1987004017A1 (en) * 1985-12-18 1987-07-02 Cerberus Ag Spark gap, in particular for use as a pre-spark gap of a spark plug of an internal combustion engine
EP0229303A1 (en) * 1985-12-18 1987-07-22 Cerberus Ag Spark gap, particularly for use as booster gap for a sparking plug of an internal combustion engine
EP0874430A2 (en) * 1997-04-26 1998-10-28 Dehn + Söhne Gmbh + Co. Kg Spark gap
EP0874430A3 (en) * 1997-04-26 1998-12-16 Dehn + Söhne Gmbh + Co. Kg Spark gap
US5963413A (en) * 1997-04-26 1999-10-05 Dehn + Sohne GmbH & Co. KG Spark gap
DE10140950A1 (en) * 2001-08-01 2003-02-27 Dehn & Soehne Encapsulated voltage surge absorber based on a spark gap for protecting against surges has disk-shaped facing electrodes with big surfaces to form a rotationally symmetrical makeup and an arc discharge gap between the electrodes
DE10140950B4 (en) * 2001-08-01 2006-10-19 Dehn + Söhne Gmbh + Co. Kg Encapsulated surge arrester based on spark gap

Also Published As

Publication number Publication date
DK155396C (en) 1989-08-07
DK359980A (en) 1981-02-25
EP0024583B1 (en) 1984-05-02
DE2934237A1 (en) 1981-03-26
US4345293A (en) 1982-08-17
CA1161106A (en) 1984-01-24
DK155396B (en) 1989-04-03
DE2934237C2 (en) 1983-02-17

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