EP1143585B2 - Surge arrester device - Google Patents

Surge arrester device Download PDF

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Publication number
EP1143585B2
EP1143585B2 EP01116334A EP01116334A EP1143585B2 EP 1143585 B2 EP1143585 B2 EP 1143585B2 EP 01116334 A EP01116334 A EP 01116334A EP 01116334 A EP01116334 A EP 01116334A EP 1143585 B2 EP1143585 B2 EP 1143585B2
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EP
European Patent Office
Prior art keywords
electrodes
housing
overvoltage protection
pressure
protection element
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Expired - Lifetime
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EP01116334A
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German (de)
French (fr)
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EP1143585B1 (en
EP1143585A2 (en
EP1143585A3 (en
Inventor
Gerd Dipl.-Ing. Kracht
Eberhard Dipl-Ing. Lehmann
Klaus Prof. Dr.-Ing. Scheibe
Joachim Dipl.Ing. Schimanski
Martin Dr.-Ing. Wetter
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Phoenix Contact GmbH and Co KG
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Phoenix Contact GmbH and Co KG
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Application filed by Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP1143585A2 publication Critical patent/EP1143585A2/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
    • 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 overvoltage protection element for dissipation of transient overvoltages, having two each having a power connection, arranged parallel to each other electrodes, an effective between the electrodes air breakdown spark gap and a housing receiving the electrodes, wherein the electrodes receiving housing closed and pressure-tight and has pressure-resistant and has a cylindrical housing shell and two each provided at one end of the housing shell housing flanges.
  • Such overvoltage protection element is z. B. from the DE 919 056 C known.
  • Electrical, but especially electronic measuring, control, regulating and switching circuits are sensitive to transient overvoltages, as they occur in particular by atmospheric discharges, ie by lightning currents, but also by short circuits and switching operations in power grids can.
  • This sensitivity has increased as electronic components, in particular transistors and thyristors, are used; Above all, integrated circuits that have been used for many years are to a great extent endangered by transient overvoltages.
  • overvoltage protection element from which the invention proceeds that is to say one with an air breakdown spark gap
  • overvoltage protection elements with an air flashover spark gap in which a sliding discharge therefore occurs when responding (cf. DE 27 18 188 A1 , the DE 29 34 236 A1 and the DE 31 01 354 A1 ).
  • Overvoltage protection elements of the type from which the invention proceeds ie those with an air breakdown spark gap, have the advantage of a higher surge current carrying capacity over overvoltage protection elements with an air flashover spark gap, but the disadvantage of a higher - and not very constant - pickup voltage.
  • each electrode has a terminal leg and a sparking horn extending at an acute angle to the terminal leg and form the spark headers of the two - with spaced apart - electrodes together the air breakdown spark gap. It is provided between the opposite ends of the terminal legs of the two electrodes - a triggering a triggering - Zünd Anlagen.
  • the DE 44 02 615 A1 be taken that it is advantageous if the spark horns of the electrodes are provided in their adjacent to the terminal legs areas with a bore.
  • the invention is based on the object to provide an overvoltage protection element of the generic type, which is simple and inexpensive, in a simple manner in its manufacture to different requirements adaptable and is still functional even after repeated response.
  • the overvoltage protection element according to the invention is characterized by the features of patent claim 1.
  • the inventive overvoltage protection element shown in the figures serves to dissipate transient overvoltages and to limit surge currents, in particular lightning impulse currents, as well as to extinguish line sequence currents; Lightning impulse currents up to 100 kA can be derived and Line sequence currents of typically 3 to 4 kA, maximum of 25 kA or even 50 kA, be deleted.
  • the overvoltage protection element according to the invention consists in its essential structure of two electrodes 3, 4 each having a current connection 1, 2, an air-breakdown spark gap 5 acting between the electrodes 3, 4 and a housing 6 receiving the electrodes 3, 4.
  • the electrodes 3, 4 are arranged parallel to one another.
  • the electrodes 3, 4 are arranged side by side; their longitudinal axes thus fall apart.
  • the electrodes 3, 4 are cylindrical; they have a circular cross-section.
  • the electrodes 3, 4 have different cross sections over their length;
  • the electrodes 3, 4 thus have electrode sections 3a, 3b, 3c, 3d and 3e or 4a, 4b, 4c, 4d and 4e.
  • the electrode sections 3c and 4c have the largest diameter. Thus, the smallest distance exists between the electrode sections 3c and 4c, so that the air breakdown spark gap 5 is formed between the electrode sections 3c and 4c.
  • the current connections of both electrodes could lie on the same side.
  • the power terminals 1 and 2 of both electrodes 3 and 4 on opposite sides. They run, as the figures can be easily removed, parallel to each other. Conceivable, however, are embodiments in which the current connections of both electrodes extend at an acute angle to each other.
  • the overvoltage protection element For the functionality of the overvoltage protection element according to the invention, it is of particular advantage if, as the figures do not show, the interior of the electrodes 3, 4 receiving housing 6 is lined, wherein the lining is preferably made of POM Teflon.
  • the illustrated in the figures embodiment of an overvoltage protection element according to the invention is insofar a particularly advantageous, as the electrodes 3, 4 receiving housing 6 is closed and made pressure resistant.
  • the housing 6 receiving the electrodes 3, 4 consists of a cylindrical housing jacket 7 and two housing flanges 8, 9 each provided at one end of the housing jacket 7.
  • the pressure resistance of the housing 6 is realized in connection with an outer pressure cylinder 10 in the above-described construction of the housing 3, the electrodes 3, 4 receiving.
  • the pressure cylinder 10 has a pressure sleeve 11, the pressure sleeve 11 is provided on one side with an external thread 12 and on the other side with an inwardly projecting flange 13, a union nut 14 is provided and the union nut 14 on the Pressure sleeve 11 is screwed.
  • the production of the overvoltage protection element according to the invention is extremely simple and therefore cost.
  • the electrodes 3, 4 the individual parts of the housing 6, namely the housing shell 7 and the housing flanges 8, 9, and the individual parts of the outer pressure cylinder 10, so the pressure sleeve 11 and the union nut 14, it is To rotationally symmetrical parts that are either readily available or can be mass-produced as turned parts on modern machine tools.
  • each housing flange 8, 9 is provided both with a through hole 15, 16, and with a blind bore 17, 18.
  • the thus formed housing flanges 8, 9 thus allow both the passage of the power terminals 1, 2, and - on the other side - an end-side mounting of the electrodes 3, 4, namely in the region of the electrode sections 3e, 4e.
  • an overvoltage protection element is that the housing flanges 8, 9 can be clamped sealingly against the cylindrical housing shell 7, with the help of the outer pressure cylinder 10, namely the fact that the nut 14 is screwed onto the pressure sleeve 11 ,
  • the housing 6 accommodating the electrodes 3, 4 may have air as extinguishing gas; However, it can also be provided with another known quenching gas, for example with SF 6 .
  • the extinguishing gas in which the electrodes 3, 4 receiving housing 6 are under atmospheric pressure but it is also conceivable, in the described embodiment, in which the electrodes 3, 4 receiving housing 6 is designed pressure-tight and pressure-resistant the quenching gas is under a pressure deviating from the atmospheric pressure.

Abstract

The excess voltage protection unit, to lead off transient excess voltages, has electrodes (3,4) with current connections (1,2). An air break spark stretch (5) is between the electrodes (3,4). The stretch (5) extinguishes mains current surges following the pickup voltage of lightning current, as the electrodes (3,4) are in parallel. The structure is contained within a housing (6).

Description

Die Erfindung betrifft ein Überspannungsschutzelement zur Ableitung von transienten Überspannungen, mit zwei jeweils einen Stromanschluß aufweisenden, parallel zueinander angeordneten Elektroden, einer zwischen den Elektroden wirksamen Luft-Durchschlag-Funkenstrecke und einem die Elektroden aufnehmenden Gehäuse, wobei das die Elektroden aufnehmende Gehäuse geschlossen sowie druckdicht und druckfest ausgeführt ist und einen zylindrischen Gehäusemantel und zwei jeweils an einem Ende des Gehäusemantels vorgesehene Gehäuseflansche aufweist. Ein solches Überspannungsschutzelement ist z. B. aus der DE 919 056 C bekannt.The invention relates to an overvoltage protection element for dissipation of transient overvoltages, having two each having a power connection, arranged parallel to each other electrodes, an effective between the electrodes air breakdown spark gap and a housing receiving the electrodes, wherein the electrodes receiving housing closed and pressure-tight and has pressure-resistant and has a cylindrical housing shell and two each provided at one end of the housing shell housing flanges. Such overvoltage protection element is z. B. from the DE 919 056 C known.

Elektrische, insbesondere aber elektronische Meß-, Steuer-, Regel- und Schaltkreise, vor allem auch Fernmeldeeinrichtungen und -anlagen, sind empfindlich gegen transiente Überspannungen, wie sie insbesondere durch atmosphärische Entladungen, also durch Blitzströme, aber auch durch Kurzschlüsse und Schalthandlungen in Energieversorgungsnetzen auftreten können. Diese Empfindlichkeit hat in dem Maße zugenommen, in dem elektronische Bauelemente, insbesondere Transistoren und Thyristoren verwendet werden; vor allem sind seit vielen Jahren zunehmend eingesetzte integrierte Schaltkreise in starkem Maße durch transiente Überspannungen gefährdet.Electrical, but especially electronic measuring, control, regulating and switching circuits, especially also telecommunications equipment and systems are sensitive to transient overvoltages, as they occur in particular by atmospheric discharges, ie by lightning currents, but also by short circuits and switching operations in power grids can. This sensitivity has increased as electronic components, in particular transistors and thyristors, are used; Above all, integrated circuits that have been used for many years are to a great extent endangered by transient overvoltages.

Neben dem Überspannungsschutzelement, von dem die Erfindung ausgeht, also einem solchen mit einer Luft-Durchschlag-Funkenstrecke, gibt es Überspannungsschutzelemente mit einer Luft-Überschlag-Funkenstrecke, bei denen also beim Ansprechen eine Gleitentladung auftritt (vgl. die DE 27 18 188 A1 , die DE 29 34 236 A1 und die DE 31 01 354 A1 ).In addition to the overvoltage protection element from which the invention proceeds, that is to say one with an air breakdown spark gap, there are overvoltage protection elements with an air flashover spark gap, in which a sliding discharge therefore occurs when responding (cf. DE 27 18 188 A1 , the DE 29 34 236 A1 and the DE 31 01 354 A1 ).

Überspannungsschutzelemente der Art, von der die Erfindung ausgeht, also solche mit einer Luft-Durchschlag-Funkenstrecke, haben gegenüber Überspannungsschutzelementen mit einer Luft-Überschlag-Funkenstrecke den Vorteil einer höheren Stoßstromtragfähigkeit, jedoch den Nachteil einer höheren - und auch nicht sonderlich konstanten - Ansprechspannung.Overvoltage protection elements of the type from which the invention proceeds, ie those with an air breakdown spark gap, have the advantage of a higher surge current carrying capacity over overvoltage protection elements with an air flashover spark gap, but the disadvantage of a higher - and not very constant - pickup voltage.

Es sind nun bereits verschiedene Überspannungsschutzelemente mit einer Luft-Durchschlag-Funkenstrecke entwickelt worden, die auch in Bezug auf die Ansprechspannung verbessert worden sind (vgl. die DE 41 41 681 A1 , die DE 41 41 682 A1 , die DE 42 44 051 A1 und die DE 44 02 615 A1 ).Various overvoltage protection elements having an air breakdown spark gap have already been developed, which have also been improved with respect to the response voltage (cf. DE 41 41 681 A1 , the DE 41 41 682 A1 , the DE 42 44 051 A1 and the DE 44 02 615 A1 ).

Das aus der DE 44 02 615 A1 bekannte Überspannungsschutzelement hat bereits in der Praxis erhebliche Bedeutung erlangt, wird nämlich von der Anmelderin hergestellt und unter der Bezeichnung FLASHTRAB FLT vertrieben (vgl. den Katalog '98/99 der Firma Phoenix Contact GmbH & Co., Teilkatalog 7 "TRABTECH Überspannungsschutz" und die dort gegebenen Erläuterungen zur Problematik von Überspannungen, insbesondere auf den Seiten 3 bis 5 sowie den Seiten 12 bis 17). Bei diesem bekannten Überspannungsschutzelement weist jede Elektrode einen Anschlußschenkel und ein unter einem spitzen Winkel zu dem Anschlußschenkel verlaufendes Funkenhorn auf und bilden die Funkenhömer der beiden - mit Abstand zueinander angeordneten - Elektroden zusammen die Luft-Durchschlag-Funkenstrecke. Dabei ist zwischen den sich gegenüberstehenden Enden der Anschlußschenkel der beiden Elektroden eine - eine Gleitentladung auslösende - Zündhilfe vorgesehen. Zusätzlich kann der DE 44 02 615 A1 entnommen werden, daß es vorteilhaft ist, wenn die Funkenhörner der Elektroden in ihren an die Anschlußschenkel angrenzenden Bereichen mit einer Bohrung versehen sind.That from the DE 44 02 615 A1 known overvoltage protection element has already gained considerable importance in practice, namely is manufactured by the applicant and sold under the name FLASHTRAB FLT (see the catalog '98 / 99 the company Phoenix Contact GmbH & Co., Parts Catalog 7 "TRABTECH surge protection" and the There given explanations on the problem of overvoltages, especially on pages 3 to 5 and pages 12 to 17). In this known overvoltage protection element, each electrode has a terminal leg and a sparking horn extending at an acute angle to the terminal leg and form the spark headers of the two - with spaced apart - electrodes together the air breakdown spark gap. It is provided between the opposite ends of the terminal legs of the two electrodes - a triggering a triggering - Zündhilfe. In addition, the DE 44 02 615 A1 be taken that it is advantageous if the spark horns of the electrodes are provided in their adjacent to the terminal legs areas with a bore.

Das zuvor angesprochene, aus der DE 44 02 615 A1 bekannte Überspannungsschutzelement ist in der praktischen Realisierung so ausgeführt, daß es einerseits eine Stoßstromtragfähigkeit von 100 kA hat, andererseits zur Löschung von Netzfolgeströmen bis in den Bereich von 100 A geeignet ist.The previously mentioned, from the DE 44 02 615 A1 known overvoltage protection element is designed in the practical realization that it has on the one hand a surge current carrying capacity of 100 kA, on the other hand, is suitable for deleting Netzfolgeströmen up to the range of 100 A.

Der Erfindung liegt nun die Aufgabe zugrunde, ein Überspannungsschutzelement der gattungsgemäßen Art bereitzustellen, das einfach und kostengünstig aufgebaut ist, auf einfache Weise bei seiner Herstellung an unterschiedliche Anforderungen anpaßbar ist und auch nach mehrfachem Ansprechen noch funktionstüchtig ist.The invention is based on the object to provide an overvoltage protection element of the generic type, which is simple and inexpensive, in a simple manner in its manufacture to different requirements adaptable and is still functional even after repeated response.

Das erfindungsgemäße Überspannungsschutzelement ist durch die Merkmale des Patentanspruchs 1 gekennzeichnet.The overvoltage protection element according to the invention is characterized by the features of patent claim 1.

Im einzelnen gibt es nun verschiedene Möglichkeiten, das erfindungsgemäße Überspannungsschutzelemente auszugestalten und weiterzubilden. Dazu wird verwiesen einerseits auf die dem Patentanspruch 1 nachgeordneten Patentansprüche, andererseits auf ein besonders bevorzugtes Ausführungsbeispiel, das in Verbindung mit der Zeichnung nachfolgend erläutert wird. In der Zeichnung zeigen

Fig. 1
einen Längsschnitt durch ein besonders bevorzugtes Ausführungsbeispiel eines erfindungsgemäßen Überspannungsschutzelements,
Fig. 2
das Überspannungsschutzelement nach Fig. 1, nach dem der das eigentliche Gehäuse aufnehmende Druckzylinder geöffnet worden ist, und
Fig. 3
das Überspannungsschutzelement nach den Fig. 1 und 2 bei geöffnetem Gehäuse.
In particular, there are now various ways to design and develop the overvoltage protection elements according to the invention. Reference is made on the one hand to the claims subordinate to claim 1, on the other hand, a particularly preferred embodiment, which is explained below in connection with the drawing. In the drawing show
Fig. 1
a longitudinal section through a particularly preferred embodiment of an overvoltage protection element according to the invention,
Fig. 2
the overvoltage protection element after Fig. 1 , after which the actual housing receiving pressure cylinder has been opened, and
Fig. 3
the overvoltage protection element according to Fig. 1 and 2 with the housing open.

Das erfindungsgemäße, in den Figuren dargestellte Überspannungsschutzelement dient zur Ableitung von transienten Überspannungen und zur Begrenzung von Stoßströmen, insbesondere von Blitzstoßströmen, sowie zur Löschung von Netzfolgeströmen; es können Blitzstoßströme bis zu 100 kA abgeleitet und Netzfolgeströme von typisch 3 bis 4 kA, maximal von 25 kA oder sogar von 50 kA, gelöscht werden.The inventive overvoltage protection element shown in the figures serves to dissipate transient overvoltages and to limit surge currents, in particular lightning impulse currents, as well as to extinguish line sequence currents; Lightning impulse currents up to 100 kA can be derived and Line sequence currents of typically 3 to 4 kA, maximum of 25 kA or even 50 kA, be deleted.

Das erfindungsgemäße Überspannungsschutzelement besteht in seinem wesentlichen Aufbau aus zwei jeweils einen Stromanschluß 1, 2 aufweisende Elektroden 3, 4, einer zwischen den Elektroden 3, 4 wirksamen Luft-Durchschlag-Funkenstrecke 5 und einem die Elektroden 3, 4 aufnehmenden Gehäuse 6.The overvoltage protection element according to the invention consists in its essential structure of two electrodes 3, 4 each having a current connection 1, 2, an air-breakdown spark gap 5 acting between the electrodes 3, 4 and a housing 6 receiving the electrodes 3, 4.

Wie die Figuren zeigen, sind die Elektroden 3, 4 parallel zueinander angeordnet. Die Elektroden 3, 4 sind nebeneinander angeordnet; ihre Längsachsen fallen also auseinander. Im dargestellten Ausführungsbeispiel sind die Elektroden 3, 4 zylindrisch ausgeführt; sie weisen einen kreisförmigen Querschnitt auf.As the figures show, the electrodes 3, 4 are arranged parallel to one another. The electrodes 3, 4 are arranged side by side; their longitudinal axes thus fall apart. In the illustrated embodiment, the electrodes 3, 4 are cylindrical; they have a circular cross-section.

Wie die Fig. 1 und 3 zeigen, gilt für das dargestellte Ausführungsbeispiel eines erfindungsgemäßen Überspannungsschutzelements, daß die Elektroden 3, 4 über ihre Länge unterschiedliche Querschnitte aufweisen; die Elektroden 3, 4 haben also Elektrodenabschnitte 3a, 3b, 3c, 3d und 3e bzw. 4a, 4b, 4c, 4d und 4e. Dabei haben die Elektrodenabschnitte 3c und 4c den größten Durchmesser. Zwischen den Elektrodenabschnitten 3c und 4c besteht somit der geringste Abstand, so daß zwischen den Elektrodenabschnitten 3c und 4c die Luft-Durchschlag-Funkenstrecke 5 ausgebildet ist.As the Fig. 1 and 3 show, applies to the illustrated embodiment of an overvoltage protection element according to the invention that the electrodes 3, 4 have different cross sections over their length; The electrodes 3, 4 thus have electrode sections 3a, 3b, 3c, 3d and 3e or 4a, 4b, 4c, 4d and 4e. The electrode sections 3c and 4c have the largest diameter. Thus, the smallest distance exists between the electrode sections 3c and 4c, so that the air breakdown spark gap 5 is formed between the electrode sections 3c and 4c.

Bei einem erfindungsgemäßen Überspannungsschutzelement könnten die Stromanschlüsse beider Elektroden auf der gleichen Seite liegen. Im dargestellten Ausführungsbeispiel liegen jedoch die Stromanschlüsse 1 bzw. 2 beider Elektroden 3 bzw. 4 auf gegenüberliegenden Seiten. Sie verlaufen, wie den Figuren ohne weiteres entnommen werden kann, parallel zueinander. Denkbar sind jedoch auch Ausführungsbeispiele, bei denen die Stromanschlüsse beider Elektroden unter einem spitzen Winkel zueinander verlaufen.In an overvoltage protection element according to the invention, the current connections of both electrodes could lie on the same side. In the illustrated embodiment, however, are the power terminals 1 and 2 of both electrodes 3 and 4 on opposite sides. They run, as the figures can be easily removed, parallel to each other. Conceivable, however, are embodiments in which the current connections of both electrodes extend at an acute angle to each other.

Für die Funktionstüchtigkeit des erfindungsgemäßen Überpannungsschutzelements ist es von besonderem Vorteil, wenn, was die Figuren nicht zeigen, der Innenraum des die Elektroden 3, 4 aufnehmenden Gehäuses 6 ausgekleidet ist, wobei die Auskleidung vorzugsweise aus POM-Teflon besteht.For the functionality of the overvoltage protection element according to the invention, it is of particular advantage if, as the figures do not show, the interior of the electrodes 3, 4 receiving housing 6 is lined, wherein the lining is preferably made of POM Teflon.

Das in den Figuren dargestellte Ausführungsbeispiel eines erfindungsgemäßen Überspannungsschutzelements ist insoweit ein besonders vorteilhaftes, als das die Elektroden 3, 4 aufnehmende Gehäuse 6 geschlossen und druckfest ausgeführt ist. Im einzelnen besteht das die Elektroden 3, 4 aufnehmende Gehäuse 6 aus einem zylindrischen Gehäusemantel 7 und zwei jeweils an einem Ende des Gehäusemantels 7 vorgesehenen Gehäuseflanschen 8, 9.The illustrated in the figures embodiment of an overvoltage protection element according to the invention is insofar a particularly advantageous, as the electrodes 3, 4 receiving housing 6 is closed and made pressure resistant. In detail, the housing 6 receiving the electrodes 3, 4 consists of a cylindrical housing jacket 7 and two housing flanges 8, 9 each provided at one end of the housing jacket 7.

Im dargestellten Ausführungsbeispiel ist bei dem zuvor geschilderten Aufbau des die Elektroden 3, 4 aufnehmenden Gehäuses 6 die Druckfestigkeit des Gehäuses 6 in Verbindung mit einem äußeren Druckzylinder 10 realisiert. Im einzelnen gilt, daß der Druckzylinder 10 eine Druckhülse 11 aufweist, die Druckhülse 11 auf der einen Seite mit einem Außengewinde 12 und auf der anderen Seite mit einem nach innen ragenden Flansch 13 versehen ist, eine Überwurfmutter 14 vorgesehen ist und die Überwurfmutter 14 auf die Druckhülse 11 aufgeschraubt ist.In the illustrated embodiment, the pressure resistance of the housing 6 is realized in connection with an outer pressure cylinder 10 in the above-described construction of the housing 3, the electrodes 3, 4 receiving. In particular, the pressure cylinder 10 has a pressure sleeve 11, the pressure sleeve 11 is provided on one side with an external thread 12 and on the other side with an inwardly projecting flange 13, a union nut 14 is provided and the union nut 14 on the Pressure sleeve 11 is screwed.

Die Herstellung des erfindungsgemäßen Überspannungsschutzelements, das heißt die Herstellung der Einzelteile und der Zusammenbau dieser Einzelteile, ist ausgesprochen einfach und damit kostengünstig. Bei den Stromanschlüssen 1, 2, den Elektroden 3, 4, den Einzelteilen des Gehäuses 6, nämlich dem Gehäusemantel 7 und den Gehäuseflanschen 8, 9, sowie den Einzelteilen des äußeren Druckzylinders 10, also der Druckhülse 11 und der Überwurfmutter 14, handelt es sich um rotationssymmetrische Teile, die entweder ohne weiteres zur Verfügung stehen oder als Drehteile auf modernen Werkzeugmaschinen serienmäßig hergestellt werden können.The production of the overvoltage protection element according to the invention, that is the production of the individual parts and the assembly of these items, is extremely simple and therefore cost. In the power terminals 1, 2, the electrodes 3, 4, the individual parts of the housing 6, namely the housing shell 7 and the housing flanges 8, 9, and the individual parts of the outer pressure cylinder 10, so the pressure sleeve 11 and the union nut 14, it is To rotationally symmetrical parts that are either readily available or can be mass-produced as turned parts on modern machine tools.

Wie insbesondere die Fig. 1 zeigt, ist jeder Gehäuseflansch 8, 9 sowohl mit einer Durchgangsbohrung 15, 16, als auch mit einer Sackbohrung 17, 18 versehen. Die so ausgebildeten Gehäuseflansche 8, 9 erlauben also sowohl das Hindurchführen der Stromanschlüsse 1, 2, als auch - auf der jeweils anderen Seite - eine endseitige Lagerung der Elektroden 3, 4, nämlich im Bereich der Elektrodenabschnitte 3e, 4e.How the particular Fig. 1 shows, each housing flange 8, 9 is provided both with a through hole 15, 16, and with a blind bore 17, 18. The thus formed housing flanges 8, 9 thus allow both the passage of the power terminals 1, 2, and - on the other side - an end-side mounting of the electrodes 3, 4, namely in the region of the electrode sections 3e, 4e.

Für das dargestellte, besonders vorteilhafte Ausführungsbeispiel eines erfindungsgemäßen Überspannungsschutzelementes gilt, daß die Gehäuseflansche 8, 9 abdichtend gegen den zylindrischen Gehäusemantel 7 verspannt werden können, und zwar mit Hilfe des äußeren Druckzylinders 10, nämlich dadurch, daß die Überwurfmutter 14 auf die Druckhülse 11 aufgeschraubt wird.For the illustrated, particularly advantageous embodiment of an overvoltage protection element according to the invention is that the housing flanges 8, 9 can be clamped sealingly against the cylindrical housing shell 7, with the help of the outer pressure cylinder 10, namely the fact that the nut 14 is screwed onto the pressure sleeve 11 ,

Bei dem erfindungsgemäßen Überspannungsschutzelement kann das die Elektroden 3, 4 aufnehmende Gehäuse 6 als Löschgas Luft aufweisen; es kann jedoch auch mit einem anderen bekannten Löschgas versehen sein, zum Beispiel mit SF6. Im übrigen kann das Löschgas in dem die Elektroden 3, 4 aufnehmenden Gehäuse 6 unter atmosphärischen Druck stehen, denkbar ist jedoch auch, und zwar bei dem beschriebenen Ausführungsbeispiel, bei dem das die Elektroden 3, 4 aufnehmende Gehäuse 6 druckdicht und druckfest ausgeführt ist, daß das Löschgas unter einem vom atmosphärischen Druck abweichenden Druck steht.In the overvoltage protection element according to the invention, the housing 6 accommodating the electrodes 3, 4 may have air as extinguishing gas; However, it can also be provided with another known quenching gas, for example with SF 6 . Incidentally, the extinguishing gas in which the electrodes 3, 4 receiving housing 6 are under atmospheric pressure, but it is also conceivable, in the described embodiment, in which the electrodes 3, 4 receiving housing 6 is designed pressure-tight and pressure-resistant the quenching gas is under a pressure deviating from the atmospheric pressure.

Claims (5)

  1. Overvoltage protection element for diverting transient overvoltages with two electrodes (3, 4) arranged parallel to one another, each of which having one current terminal (1, 2), an air-breakdown spark gap (5) which acts between the electrodes (3, 4), and a housing (6) which holds the electrodes (3, 4), wherein the housing (6) holding the electrodes (3, 4) is closed as well as pressure resistant and pressure-tight and has a cylindrical housing jacket (7) and two housing flanges (8, 9) provided each on an end of the housing jacket (7), wherein the housing (6) is arranged in an outer pressure cylinder (10)
    characterized in
    that the pressure cylinder (10) has a pressure sleeve (11), the pressure sleeve (11) being provided with, on one side an outer thread (12), and on the other side, with a flange (13) which projects inwardly,
    and a union nut (14) is provided, the union nut (14) being screwed onto the pressure sleeve (11).
  2. Overvoltage protection element according to claim 1, characterized in that the housing (6) holding the electrodes (3, 4) has air as an extinguishing gas.
  3. Overvoltage protection element according to claim 1 or 2, characterized in that the housing (6) holding the electrodes (3, 4) has SF6 as the extinguishing gas.
  4. Overvoltage protection element according to any one of claims 1 to 3, characterized in that the extinguishing gas is under atmospheric pressure.
  5. Overvoltage protection element according to any one of claims 1 to 3, characterized in that the extinguishing gas is under a pressure that differs from atmospheric pressure.
EP01116334A 1998-04-27 1999-04-21 Surge arrester device Expired - Lifetime EP1143585B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19818674 1998-04-27
DE19818674A DE19818674B4 (en) 1998-04-27 1998-04-27 Snubber
EP99107875A EP0954073B1 (en) 1998-04-27 1999-04-21 Overvoltage arrester element

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP99107875A Division EP0954073B1 (en) 1998-04-27 1999-04-21 Overvoltage arrester element
EP99107875.9 Division 1999-04-21

Publications (4)

Publication Number Publication Date
EP1143585A2 EP1143585A2 (en) 2001-10-10
EP1143585A3 EP1143585A3 (en) 2002-11-06
EP1143585B1 EP1143585B1 (en) 2004-05-12
EP1143585B2 true EP1143585B2 (en) 2008-11-05

Family

ID=7865872

Family Applications (2)

Application Number Title Priority Date Filing Date
EP01116334A Expired - Lifetime EP1143585B2 (en) 1998-04-27 1999-04-21 Surge arrester device
EP99107875A Expired - Lifetime EP0954073B1 (en) 1998-04-27 1999-04-21 Overvoltage arrester element

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP99107875A Expired - Lifetime EP0954073B1 (en) 1998-04-27 1999-04-21 Overvoltage arrester element

Country Status (6)

Country Link
US (2) US6392862B1 (en)
EP (2) EP1143585B2 (en)
CN (1) CN1257586C (en)
AT (2) ATE220252T1 (en)
DE (3) DE19818674B4 (en)
ES (2) ES2180239T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE10164232A1 (en) * 2001-12-31 2003-07-17 Phoenix Contact Gmbh & Co Multipole surge protection system and method for the safe operation of a multipole surge protection system
DE10231431B4 (en) * 2002-07-11 2014-03-20 Dehn + Söhne Gmbh + Co. Kg Encapsulated, flameproof surge arrester with a spark gap
FR2855662B1 (en) * 2003-06-02 2005-07-15 I T H P P ECLATOR, AND IN PARTICULAR A HIGH-VOLTAGE ECLATOR
DE102018133389A1 (en) * 2018-12-21 2020-06-25 Phoenix Contact Gmbh & Co. Kg Surge arresters

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Also Published As

Publication number Publication date
ATE220252T1 (en) 2002-07-15
ES2180239T3 (en) 2003-02-01
ES2217060T3 (en) 2004-11-01
CN1241054A (en) 2000-01-12
US6392862B1 (en) 2002-05-21
ATE266903T1 (en) 2004-05-15
EP1143585B1 (en) 2004-05-12
EP1143585A2 (en) 2001-10-10
DE59909490D1 (en) 2004-06-17
DE19818674A1 (en) 1999-10-28
DE19818674B4 (en) 2004-04-29
US6529360B2 (en) 2003-03-04
EP0954073B1 (en) 2002-07-03
US20020024789A1 (en) 2002-02-28
EP0954073A1 (en) 1999-11-03
CN1257586C (en) 2006-05-24
DE59901894D1 (en) 2002-08-08
ES2217060T5 (en) 2009-04-16
EP1143585A3 (en) 2002-11-06

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