EP2991084A1 - Surge arrester - Google Patents

Surge arrester Download PDF

Info

Publication number
EP2991084A1
EP2991084A1 EP14182268.4A EP14182268A EP2991084A1 EP 2991084 A1 EP2991084 A1 EP 2991084A1 EP 14182268 A EP14182268 A EP 14182268A EP 2991084 A1 EP2991084 A1 EP 2991084A1
Authority
EP
European Patent Office
Prior art keywords
arc
surge arrester
end fittings
longitudinal axis
contact surface
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
EP14182268.4A
Other languages
German (de)
French (fr)
Other versions
EP2991084B1 (en
Inventor
Gundolf Barenthin
Reinhard GÖHLER
Bernd Kruska
Erhard Pippert
Ralf Mertsching
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.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP14182268.4A priority Critical patent/EP2991084B1/en
Publication of EP2991084A1 publication Critical patent/EP2991084A1/en
Application granted granted Critical
Publication of EP2991084B1 publication Critical patent/EP2991084B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors

Definitions

  • the invention relates to a surge arrester according to the preamble of patent claim 1.
  • Surge arresters are protective systems, for example for power transmission networks, which in case of overvoltages caused by lightning strikes or malfunctions of other subsystems dissipate these overvoltages to ground and thus protect other components of the power transmission system.
  • Such a surge arrester comprises one or more cylindrical Ableit yarnlen of individual also cylindrical Varistorblöcken.
  • Varistors are characterized by a voltage-dependent resistor. At low voltages these act as insulators. From a certain threshold voltage, which is material-dependent, they show a good conductivity. Frequently, varistors are made from metal oxides such as zinc oxide.
  • the discharge column is connected at both ends with end fittings, which establish the electrical contact to the power line and to ground. In order to ensure good electrical contact even under mechanical stress, the delivery column must be held together under pressure. This can be done by tension members, such as ropes or rods are preferably made of glass fiber reinforced plastic, clamped in the end fittings or arranged at the ends of the Ableit yarn pressure plates under train.
  • the tension elements surround the Ableit yarn and thus form a cage around this.
  • the dissipation column is arranged in a mechanically stable tubular housing made of an insulating material, for example made of porcelain or glass fiber reinforced plastic.
  • the end fittings then serve as closures for this case at the same time.
  • gases from this case show Such surge often a pressure relief device.
  • the lines of the lower voltage level are usually installed on the lower levels of the mast, the higher voltage levels above. If now a line of the higher voltage level breaks and falls to the lower voltage level, so is the voltage of the higher voltage level on the power line of the lower than overvoltage.
  • a surge arrester connected to the power line of the lower voltage level can dissipate this overvoltage to the ground until grid monitoring devices register this error and at least switch off the broken line. This usually takes a few fractions of a second, as in the case of a lightning strike, about 200 ms.
  • the two power lines have different line frequency, because the lower power line is for example a part of the traction current network with a frequency of 16.7 Hz and the upper part of a high voltage network with a frequency of 50 Hz, the response time of the monitoring devices is significantly longer, sometimes for several seconds. If the arc extinguishes within this time, devices connected to the lower power line may be damaged or destroyed.
  • the object of the invention is to provide a surge arrester, which is inexpensive and yet has a high resistance to arcing.
  • a surge arrester with a discharge column extending along a longitudinal axis at both ends of which end fittings are arranged.
  • one arc electrode is electrically connected to each of the two end fittings, each arc electrode having a contact surface for an arc root, wherein the contact surface is radially further spaced from the longitudinal axis than an outer contour of the insulating housing.
  • the arc electrode is preferably mechanically connected directly to the end fitting, for example screwed thereto.
  • the arc root that is, the point at which an arc emerges from an electrically conductive part, thus no longer lies on the surface of the end fitting, but on the contact surface of the arc electrode.
  • this can be made more resistant to the arc by design and choice of material, on the other hand, the arc is kept away from the outer casing of the surge arrester and thus prevents damage.
  • each end fitting has a blow-off bar for directed discharge of a gas stream from the insulating housing in a blow-out direction.
  • the blow-out directions are directed towards each other and the contact surfaces are arranged in the region of the gas flow emerging from the blow-out bar, ie directly in the gas flow or at the edge of the gas flow.
  • the hot gas flowing around the arc electrode supports the ignition of the arc directly at the arc electrodes and prevents the arc from being ignited elsewhere, for example at the end fitting, and only then jumps over to the arc electrodes.
  • the arc electrodes are made of a material of higher erosion resistance than that of the end fittings.
  • the arc electrodes are made of steel and the end fittings of aluminum. The complex geometries of the end fittings can be made from the cheaper and easier to process aluminum. The arc electrodes ensure that the end fittings are protected from the arc.
  • the arc electrodes each have a flange arranged perpendicular to the longitudinal axis.
  • the arc electrodes are attached to the outside of the end fittings.
  • the flange may have a pitch pattern as provided in the prior art surge arresters for attachment to the mast.
  • each arc electrode has at least one protruding from the flange and bent in the direction of the longitudinal axis tongue, at the free end of the contact surface is arranged.
  • the tongue can point in the direction of the longitudinal axis or have an acute angle to it.
  • Such an arc electrode has a particularly simple geometry and is easy to manufacture.
  • the arc electrodes each have a circumferential ring about the longitudinal axis.
  • This ring is connected to the end fitting via fastening tabs and the contact surface is arranged on the side facing away from the Ausblasschute of the ring.
  • FIG. 1 shows a conventional surge arrester 30 of Siemens AG. Visible from the outside is provided with shields 24 tubular insulating housing 4, which is bounded at its two end faces by a respective end fitting 2, 3. The insulating housing 4 is shown cut open in the upper area to show the elements inside.
  • the insulating housing 4 may be made of porcelain or other ceramic, the umbrellas 24 are then also made of porcelain or ceramic. Alternatively, the insulating housing 4 may be formed of a glass fiber reinforced plastic pipe. The screens 24 may then be injection molded silicone screens.
  • the insulating housing 4 is closed at its two ends by a respective end fitting 2, 3. Most of the end fittings 2, 3 are attached to the pipe end of the insulating housing 4 and cemented airtight with this.
  • the end fittings 2, 3 are designed mirror-symmetrically in the rule. They each have a sealed membrane 26 in its interior, which closes the end faces of the insulating housing 4 airtight.
  • the end fittings 2, 3 are often made of steel or aluminum.
  • flanges 25 are arranged, by means of which the surge arrester 1 can be fixed, connected to a further surge arrester 1 or electrically connected to the high voltage line.
  • the flanges 25 are often rectangular plates with multiple mounting holes in a particular grid.
  • a substantially cylindrical discharge column 29 is arranged, whose cylinder axis extends along the longitudinal axis 40 of the insulating housing 4.
  • the discharge column 29 has a column of Varistorblöcken 20, may be inserted into the filler 21.
  • the column is held together by means held in holding plates 27 holding rods 22.
  • Springs 28 provide the electrical contact via the membrane 26 to the end fittings 2, 3 ago.
  • FIG. 2 shows a surge arrester 1 according to the invention, the FIG. 3 a section of it in the field of upper end fitting.
  • this additionally has two arc electrodes 9, 10.
  • the arc electrodes 9, 10 consist essentially of a respective metal strip whose ends are tapered and bent to tongues 8. With each end fitting 2, 3, an arc electrode 9, 10 is electrically connected.
  • the arc electrodes 9, 10 are mounted on an insulating housing 4 facing away from the outside of the flange 25 of the end fittings 2, 3.
  • On one of the flanges 25 is also a connection plate 31 for connection of a high voltage line, on the other a mounting plate 32 for attachment to a support foot arranged. Terminal plate 31 and mounting plate 32 are only an example and not part of the surge arrester. 1
  • one of the bent tongues 8 of the arc electrodes 9, 10 points in the discharge direction 7 of the Ausblasschuten 5, 6.
  • the tongue 8 is aligned with respect to the Ausblasschuten 5, 6, that a leaking gas stream, the tongue 8 brushes or flows along it, without swirling to become.
  • the outer edge of the tongue 8 serves as a contact surface 12 for an arc root.
  • the contact surfaces 12 are radially further spaced from the longitudinal axis 40, as an outer contour of the insulating housing 4. A between the contact surfaces 12 burning arc is kept away from the insulating housing 4.
  • the distance of the contact surfaces 12 of the two arc electrodes 9, 10 is also less than the distance of the Ausblasschuten 5, 6 from each other, so that the arc is preferably commutated to the arc electrodes 9, 10.
  • the arc electrodes 9, 10 are preferably made of a more erosive material than the end fittings 2, 3, so hold a burning arc longer stand.
  • the end fittings 2, 3 can be inexpensively made of aluminum and the arc electrodes 9, 10 of a steel such as mild steel or tool steel.
  • the second, the Ausblasschuten 5, 6 radially opposite tongue 8 of the arc electrodes 9, 10 serves to take over the arc root to to prevent it from commutating with the exhaust chutes 5, 6 or other parts of the end fittings 2, 3.
  • FIG. 4 shows an alternative embodiment of the arc electrode 11.
  • the arc electrode 11 consists of a circumferential around the longitudinal axis 40 ring 13 which is fixed by means of four fastening tabs 14 on the flange 25 of the end fitting 2.
  • the fastening tabs 14 are fastened here on a side of the flange 25 facing the insulating housing 4.
  • such an arc electrode 11 can be retrofitted to a conventional surge arrester 30 without having to remove the connection plate 31 or the mounting plate 32.
  • the arc can travel on the rotating ring 13, without jumping on the end fittings 2, 3.
  • the FIG. 5 shows a single arc electrode 9 in an alternative embodiment. It is similar in structure, as the arc electrode 9 of FIG. 2 and 3 but has only one tongue 8.
  • the arc electrode 10 has a flange 15, which is arranged in the mounted state perpendicular to the longitudinal axis 40.
  • the flange 15 is a substantially rectangular, here square plate with mounting holes 16 which are created in the same hole pattern as that of the flange 25 of the end fittings 2, 3.
  • From the flange 15 is a tongue 8, which is bent in the direction of the longitudinal axis 40 is.
  • the tongue tapers 8.
  • Flange 15 and tongue 8 form an obtuse angle.
  • the free end of the tongue 8 forms the contact surface 12.
  • a recess 17 may be arranged. This saves material or makes a nameplate attached to the exhaust bar visible.

Abstract

Die Erfindung betrifft einen Überspannungsableiter (1) mit einer sich zwischen zwei Endarmaturen (2, 3) entlang einer Längsachse (40) erstreckenden Ableitsäule (29), die von einem Isoliergehäuse (4) umgeben ist. Erfindungsgemäß ist mit jeder der zwei Endarmaturen (2, 3) jeweils eine Lichtbogenelektrode (9, 10, 11) elektrisch verbunden, wobei jede Lichtbogenelektrode (9, 10, 11) eine Kontaktfläche (12) für einen Lichtbogenfußpunkt aufweist, wobei die Kontaktfläche (12) von der Längsachse (40) radial weiter beabstandet ist als eine Außenkontur des Isoliergehäuses (4). Der Lichtbogenfußpunkt, also der Punkt an dem ein Lichtbogen aus einem elektrisch leitenden Teil austritt, liegt damit nicht mehr auf der Oberfläche der Endarmatur (2, 3), sondern auf der Kontaktfläche (12) der Lichtbogenelektrode (9, 10 11). Einerseits kann diese durch Gestaltung und Materialwahl widerstandsfähiger gegen den Lichtbogen gemacht werden, andererseits wird der Lichtbogen vom Außengehäuse des Überspannungsableiters ferngehalten und so eine Beschädigung vermieden.The invention relates to a surge arrester (1) having a discharge column (29) extending between two end fittings (2, 3) along a longitudinal axis (40) and surrounded by an insulating housing (4). According to the invention, an arc electrode (9, 10, 11) is electrically connected to each of the two end fittings (2, 3), each arc electrode (9, 10, 11) having a contact surface (12) for an arc root, wherein the contact surface (12 ) is further radially spaced from the longitudinal axis (40) as an outer contour of the insulating housing (4). The arc root, ie the point at which an arc emerges from an electrically conductive part, is thus no longer on the surface of the end fitting (2, 3), but on the contact surface (12) of the arc electrode (9, 10 11). On the one hand, this can be made more resistant to the arc by design and choice of material, on the other hand, the arc is kept away from the outer casing of the surge arrester and thus prevents damage.

Description

Die Erfindung betrifft einen Überspannungsableiter gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a surge arrester according to the preamble of patent claim 1.

Überspannungsableiter sind Schutzsysteme, beispielsweise für Stromübertragungsnetze, die bei auftretenden Überspannungen durch Blitzeinschlag oder Fehlfunktionen anderer Teilsysteme diese Überspannungen zur Masse hin ableiten und so andere Bauteile des Stromübertragungsnetzes schützen.Surge arresters are protective systems, for example for power transmission networks, which in case of overvoltages caused by lightning strikes or malfunctions of other subsystems dissipate these overvoltages to ground and thus protect other components of the power transmission system.

Ein derartiger Überspannungsableiter umfasst ein oder mehrere zylindrische Ableitsäulen aus einzelnen ebenfalls zylindrischen Varistorblöcken. Varistoren zeichnen sich durch einen spannungsabhängigen Widerstand aus. Bei niedrigen Spannungen wirken diese als Isolatoren. Ab einer bestimmten Schwellenspannung, die materialabhängig ist, zeigen sie eine gute Leitfähigkeit. Häufig werden Varistoren aus Metalloxiden wie Zinkoxid hergestellt. Die Ableitsäule ist an beiden Enden mit Endarmaturen verbunden, die den elektrischen Kontakt zur Stromleitung und zur Masse herstellen. Um einen guten elektrischen Kontakt auch unter mechanischer Belastung zu gewährleisten, muss die Ableitsäule unter Druck zusammengehalten werden. Dies kann erfolgen, indem Zugelemente, beispielsweise Seile oder Stäbe vorzugsweise aus glasfaserverstärktem Kunststoff, in den Endarmaturen oder in an den Enden der Ableitsäule angeordneten Druckplatten unter Zug eingespannt werden. Die Zugelemente umgeben dabei die Ableitsäule und bilden so einen Käfig um diese. Ab einer gewissen Größe oder, wenn der Überspannungsableiter in einem erdbebengefährdeten Gebiet aufgestellt werden soll, ist die Ableitsäule in einem mechanisch stabilen rohrartigen Gehäuse aus einem Isoliermaterial, beispielsweise aus Porzellan oder glasfaserverstärktem Kunststoff, angeordnet. Die Endarmaturen dienen dann gleichzeitig als Verschlüsse für dieses Gehäuse. Um die in einem Überlastfall entstehenden Gase aus diesem Gehäuse abzuführen, weisen solche Überspannungsableiter häufig eine Druckentlastungsvorrichtung auf.Such a surge arrester comprises one or more cylindrical Ableitsäulen of individual also cylindrical Varistorblöcken. Varistors are characterized by a voltage-dependent resistor. At low voltages these act as insulators. From a certain threshold voltage, which is material-dependent, they show a good conductivity. Frequently, varistors are made from metal oxides such as zinc oxide. The discharge column is connected at both ends with end fittings, which establish the electrical contact to the power line and to ground. In order to ensure good electrical contact even under mechanical stress, the delivery column must be held together under pressure. This can be done by tension members, such as ropes or rods are preferably made of glass fiber reinforced plastic, clamped in the end fittings or arranged at the ends of the Ableitsäule pressure plates under train. The tension elements surround the Ableitsäule and thus form a cage around this. From a certain size or, if the surge arrester is to be installed in an earthquake-prone area, the dissipation column is arranged in a mechanically stable tubular housing made of an insulating material, for example made of porcelain or glass fiber reinforced plastic. The end fittings then serve as closures for this case at the same time. To remove the resulting in an overload case gases from this case, show Such surge often a pressure relief device.

Wenn ein solcher Überlastfall auftritt, beispielsweise durch einen zu hohen Energieeintrag oder einen Defekt des Überspannungsableiters, bildet sich zwischen den Endarmaturen ein Lichtbogen, über den die Überspannung abgebaut wird. Im Falle eines Blitzschlages erlischt dieser nach wenigen Sekundenbruchteilen.If such an overload occurs, for example due to an excessive energy input or a defect in the surge arrester, an arc forms between the end fittings, which dissipates the overvoltage. In the event of a lightning strike, this will extinguish after a few seconds fractions.

Bei Hochspannungsmasten mit Stromleitungen unterschiedlicher Spannungsebenen, beispielsweise 20 kV und 380 kV, werden die Leitungen der niedrigeren Spannungsebene meist auf den unteren Ebenen des Mastes installiert, die der höheren Spannungsebenen darüber. Falls nun eine Leitung der höheren Spannungsebene reißt und auf die der unteren Spannungsebene herunterfällt, so liegt die Spannung der höheren Spannungsebene an der Stromleitung der niedrigeren als Überspannung an. Ein mit der Stromleitung der unteren Spannungsebene verbundener Überspannungsableiter kann diese Überspannung zur Erde hin abführen, bis Netzüberwachungseinrichtungen diesen Fehler registrieren und zumindest die gerissene Leitung abschalten. Dies dauert in der Regel wie im Falle eines Blitzeinschlages wenige Sekundenbruchteile, etwa 200 ms.For high voltage pylons with power lines of different voltage levels, such as 20 kV and 380 kV, the lines of the lower voltage level are usually installed on the lower levels of the mast, the higher voltage levels above. If now a line of the higher voltage level breaks and falls to the lower voltage level, so is the voltage of the higher voltage level on the power line of the lower than overvoltage. A surge arrester connected to the power line of the lower voltage level can dissipate this overvoltage to the ground until grid monitoring devices register this error and at least switch off the broken line. This usually takes a few fractions of a second, as in the case of a lightning strike, about 200 ms.

Haben die beiden Stromleitungen aber unterschiedliche Netzfrequenz, weil die untere Stromleitung beispielsweise ein Teil des Bahnstromnetzes mit einer Frequenz von 16,7 Hz und die obere ein Teil eines Hochspannungsnetzes mit einer Frequenz von 50 Hz ist, so ist die Reaktionszeit der Überwachungseinrichtungen deutlich länger, manchmal mehrere Sekunden lang. Erlischt der Lichtbogen innerhalb dieser Zeit, so können an die untere Stromleitung angeschlossene Geräte beschädigt oder zerstört werden.However, if the two power lines have different line frequency, because the lower power line is for example a part of the traction current network with a frequency of 16.7 Hz and the upper part of a high voltage network with a frequency of 50 Hz, the response time of the monitoring devices is significantly longer, sometimes for several seconds. If the arc extinguishes within this time, devices connected to the lower power line may be damaged or destroyed.

Bisher wurden bei Überspannungsableitern für solche Netztopologien die Endarmaturen aus einem Stahl gefertigt, welcher eine entsprechend hohe Abbrandfestigkeit bei auftretenden Lichtbögen aufweist. Stahl ist jedoch als Material relativ teuer und schwierig zu bearbeiten.So far, in surge arresters for such network topologies, the end fittings made of a steel, which has a correspondingly high erosion resistance at occurring Has arcs. However, steel is relatively expensive and difficult to work with as a material.

Aufgabe der Erfindung ist es, einen Überspannungsableiter anzugeben, der kostengünstig ist und dennoch eine hohe Standfestigkeit gegenüber Lichtbögen aufweist.The object of the invention is to provide a surge arrester, which is inexpensive and yet has a high resistance to arcing.

Gelöst wird die Aufgabe mit einem Überspannungsableiter mit einer sich entlang einer Längsachse erstreckenden Ableitsäule an deren beiden Enden Endarmaturen angeordnet sind. Erfindungsgemäß ist mit jeder der zwei Endarmaturen jeweils eine Lichtbogenelektrode elektrisch verbunden, wobei jede Lichtbogenelektrode eine Kontaktfläche für einen Lichtbogenfußpunkt aufweist, wobei die Kontaktfläche von der Längsachse radial weiter beabstandet ist als eine Außenkontur des Isoliergehäuses. Die Lichtbogenelektrode ist vorzugsweise direkt mit der Endarmatur mechanisch verbunden, beispielsweise mit dieser verschraubt. Der Lichtbogenfußpunkt, also der Punkt an dem ein Lichtbogen aus einem elektrisch leitenden Teil austritt, liegt damit nicht mehr auf der Oberfläche der Endarmatur, sondern auf der Kontaktfläche der Lichtbogenelektrode. Einerseits kann diese durch Gestaltung und Materialwahl widerstandsfähiger gegen den Lichtbogen gemacht werden, andererseits wird der Lichtbogen vom Außengehäuse des Überspannungsableiters ferngehalten und so eine Beschädigung vermieden.The problem is solved with a surge arrester with a discharge column extending along a longitudinal axis at both ends of which end fittings are arranged. According to the invention, one arc electrode is electrically connected to each of the two end fittings, each arc electrode having a contact surface for an arc root, wherein the contact surface is radially further spaced from the longitudinal axis than an outer contour of the insulating housing. The arc electrode is preferably mechanically connected directly to the end fitting, for example screwed thereto. The arc root, that is, the point at which an arc emerges from an electrically conductive part, thus no longer lies on the surface of the end fitting, but on the contact surface of the arc electrode. On the one hand, this can be made more resistant to the arc by design and choice of material, on the other hand, the arc is kept away from the outer casing of the surge arrester and thus prevents damage.

Vorteilhaft weist jede Endarmatur eine Ausblasschute zum gerichteten Ablassen eines Gasstromes aus dem Isoliergehäuse in eine Ausblasrichtung auf. Die Ausblasrichtungen sind dabei aufeinander zu gerichtet und die Kontaktflächen sind im Bereich des aus der Ausblasschute austretenden Gasstromes angeordnet, also direkt im Gasstrom oder am Rand des Gasstromes. Das die Lichtbogenelektrode umströmende heiße Gas unterstützt die Zündung des Lichtbogens direkt an den Lichtbogenelektroden und verhindert, dass der Lichtbogen zunächst an anderer Stelle, beispielsweise an der Endarmatur, gezündet wird und erst dann auf die Lichtbogenelektroden überspringt. Vorzugsweise sind die Lichtbogenelektroden aus einem Material höherer Abbrandfestigkeit als dem der Endarmaturen hergestellt. Insbesondere sind die Lichtbogenelektroden aus Stahl und die Endarmaturen aus Aluminium hergestellt. Die komplexen Geometrien der Endarmaturen lassen sich so aus dem billigeren und leichter zu bearbeitenden Aluminium herstellen. Die Lichtbogenelektroden sorgen dafür, dass die Endarmaturen vor dem Lichtbogen geschützt sind.Advantageously, each end fitting has a blow-off bar for directed discharge of a gas stream from the insulating housing in a blow-out direction. The blow-out directions are directed towards each other and the contact surfaces are arranged in the region of the gas flow emerging from the blow-out bar, ie directly in the gas flow or at the edge of the gas flow. The hot gas flowing around the arc electrode supports the ignition of the arc directly at the arc electrodes and prevents the arc from being ignited elsewhere, for example at the end fitting, and only then jumps over to the arc electrodes. Preferably, the arc electrodes are made of a material of higher erosion resistance than that of the end fittings. In particular, the arc electrodes are made of steel and the end fittings of aluminum. The complex geometries of the end fittings can be made from the cheaper and easier to process aluminum. The arc electrodes ensure that the end fittings are protected from the arc.

Ferner wird bevorzugt, dass die Lichtbogenelektroden jeweils einen senkrecht zur Längsachse angeordneten Flansch aufweisen. Mittels des Flansches sind die Lichtbogenelektroden außen an den Endarmaturen befestigt. Der Flansch kann ein Lochraster aufweisen, wie es bei Überspannungsableitern aus dem Stand der Technik zu Befestigung am Mast vorgesehen ist. Dadurch können herkömmliche Überspannungsableiter mit einer nachträglich angebauten Lichtbogenelektrode zu erfindungsgemäßen Überspannungsableitern aufgerüstet werden.It is further preferred that the arc electrodes each have a flange arranged perpendicular to the longitudinal axis. By means of the flange, the arc electrodes are attached to the outside of the end fittings. The flange may have a pitch pattern as provided in the prior art surge arresters for attachment to the mast. As a result, conventional surge arresters can be upgraded with a subsequently mounted arc electrode to surge arresters according to the invention.

In einer vorteilhaften Ausgestaltung der Erfindung weist jede Lichtbogenelektrode wenigstens eine vom Flansch abstehende und in Richtung Längsachse gebogene Zunge auf, an deren freiem Ende die Kontaktfläche angeordnet ist. Die Zunge kann dabei in Richtung der Längsachse zeigen oder einen spitzen Winkel zu ihr aufweisen. Eine solche Lichtbogenelektrode weist eine besonders einfache Geometrie auf und ist leicht herzustellen.In an advantageous embodiment of the invention, each arc electrode has at least one protruding from the flange and bent in the direction of the longitudinal axis tongue, at the free end of the contact surface is arranged. The tongue can point in the direction of the longitudinal axis or have an acute angle to it. Such an arc electrode has a particularly simple geometry and is easy to manufacture.

Ebenfalls vorteilhaft weisen die Lichtbogenelektroden jeweils einen um die Längsachse umlaufenden Ring auf. Dieser Ring ist mit der Endarmatur über Befestigungslaschen verbunden und die Kontaktfläche ist auf der der Ausblasschute abgewandten Seite des Ringes angeordnet. Durch eine solche ringförmige Lichtbogenelektrode kann der Lichtbogen außen um das Gehäuse wandern, ohne abzureißen.Likewise advantageously, the arc electrodes each have a circumferential ring about the longitudinal axis. This ring is connected to the end fitting via fastening tabs and the contact surface is arranged on the side facing away from the Ausblasschute of the ring. By such an annular arc electrode, the arc can wander outside the housing without tearing.

Im Folgenden wird die Erfindung anhand der Zeichnungen näher erläutert. Dabei zeigen:

Figur 1
eine Teilschnittdarstellung eines bekannten Überspannungsableiters,
Figur 2
einen erfindungsgemäßen Überspannungsableiter,
Figur 3
eine Detaildarstellung eines Ausschnitts aus einem erfindungsgemäßen Überspannungsableiter,
Figur 4
eine alternative Ausführungsform eines erfindungsgemäßen Überspannungsableiters,
Figur 5
eine einzelne Lichtbogenelektrode.
In the following the invention will be explained in more detail with reference to the drawings. Showing:
FIG. 1
a partial sectional view of a known surge arrester,
FIG. 2
a surge arrester according to the invention,
FIG. 3
a detailed representation of a section of a surge arrester according to the invention,
FIG. 4
an alternative embodiment of a surge arrester according to the invention,
FIG. 5
a single arc electrode.

Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.Corresponding parts are provided in all figures with the same reference numerals.

Die Figur 1 zeigt einen herkömmlichen Überspannungsableiter 30 der Siemens AG. Von außen sichtbar ist ein mit Schirmen 24 versehenes rohrförmiges Isoliergehäuse 4, das an seinen beiden Stirnseiten von jeweils einer Endarmatur 2, 3 begrenzt ist. Das Isoliergehäuse 4 ist im oberen Bereich aufgeschnitten dargestellt, um die Elemente im Inneren zu zeigen.The FIG. 1 shows a conventional surge arrester 30 of Siemens AG. Visible from the outside is provided with shields 24 tubular insulating housing 4, which is bounded at its two end faces by a respective end fitting 2, 3. The insulating housing 4 is shown cut open in the upper area to show the elements inside.

Das Isoliergehäuse 4 kann aus Porzellan oder einer anderen Keramik gefertigt sein, die Schirme 24 sind dann ebenfalls aus Porzellan oder Keramik. Alternativ kann das Isoliergehäuse 4 aus einem glasfaserverstärkten Kunststoffrohr gebildet sein. Die Schirme 24 können dann per Spritzguss aufgespritzte Silikonschirme sein.The insulating housing 4 may be made of porcelain or other ceramic, the umbrellas 24 are then also made of porcelain or ceramic. Alternatively, the insulating housing 4 may be formed of a glass fiber reinforced plastic pipe. The screens 24 may then be injection molded silicone screens.

Das Isoliergehäuse 4 ist an seinen beiden Enden durch jeweils eine Endarmatur 2, 3 verschlossen. Meist sind die Endarmaturen 2, 3 auf das Rohrende des Isoliergehäuses 4 aufgesteckt und mit diesem luftdicht verkittet. Die Endarmaturen 2, 3 sind in der Regel spiegelsymmetrisch ausgelegt. Sie weisen jeweils eine gedichtete Membran 26 in ihrem Inneren auf, die die Stirnseiten des Isoliergehäuses 4 luftdicht verschließt. Die Endarmaturen 2, 3 sind häufig aus Stahl oder Aluminium hergestellt. Auf der Außenseite der Endarmaturen 2, 3 sind Flansche 25 angeordnet, mittels derer der Überspannungsableiter 1 befestigt, mit einem weiteren Überspannungsableiter 1 verbunden oder mit der Hochspannungsleitung elektrisch verbunden werden kann. Die Flansche 25 sind oft rechteckige Platten mit mehreren Befestigungslöchern in einem bestimmten Raster.The insulating housing 4 is closed at its two ends by a respective end fitting 2, 3. Most of the end fittings 2, 3 are attached to the pipe end of the insulating housing 4 and cemented airtight with this. The end fittings 2, 3 are designed mirror-symmetrically in the rule. They each have a sealed membrane 26 in its interior, which closes the end faces of the insulating housing 4 airtight. The end fittings 2, 3 are often made of steel or aluminum. On the outside of the end fittings 2, 3 flanges 25 are arranged, by means of which the surge arrester 1 can be fixed, connected to a further surge arrester 1 or electrically connected to the high voltage line. The flanges 25 are often rectangular plates with multiple mounting holes in a particular grid.

Im Rohrinneren des Isoliergehäuses 4 ist eine im Wesentlichen zylindrische Ableitsäule 29 angeordnet, deren Zylinderachse sich entlang der Längsachse 40 des Isoliergehäuses 4 erstreckt. Die Ableitsäule 29 weist eine Säule aus Varistorblöcken 20 auf, in die Füllstücke 21 eingefügt sein können. Die Säule ist mittels in Halteplatten 27 gehaltenen Haltestangen 22 zusammengehalten. Stützplatten 23, durch die die Haltestangen 22 geführt sind, stützen die Ableitsäule 29 auf der Innenseite des Isoliergehäuses 4 ab. Federn 28 stellen den elektrischen Kontakt über die Membran 26 zu den Endarmaturen 2, 3 her.In the tube interior of the insulating housing 4, a substantially cylindrical discharge column 29 is arranged, whose cylinder axis extends along the longitudinal axis 40 of the insulating housing 4. The discharge column 29 has a column of Varistorblöcken 20, may be inserted into the filler 21. The column is held together by means held in holding plates 27 holding rods 22. Support plates 23, through which the support rods 22 are guided, support the discharge column 29 on the inside of the insulating housing 4. Springs 28 provide the electrical contact via the membrane 26 to the end fittings 2, 3 ago.

Bei Überlastung der Ableitsäule 29 entsteht im Inneren des Isoliergehäuses 4 eine große Menge Gas. Durch den erhöhten Druck reißen die Membranen 26 und das Gas strömt über in den Endarmaturen 2, 3 angeordneten Ausblasschuten 5, 6 gerichtet nach außen. Die Ausblasrichtung 7 der Ausblasschuten 5, 6 sind entlang der Außenseite des Isoliergehäuses 4 und aufeinander zu ausgerichtet. Die beiden aus den Ausblasschuten 5, 6 austretenden Gasströme treffen so etwa auf halber Länge des Isoliergehäuses 4 aufeinander. Ein im Inneren des Isoliergehäuses 4 entstandener Lichtbogen kommutiert dann nach außen und brennt zwischen den Ausblasschuten. Die Lichtbogenfußpunkte können dann auf den Oberflächen der Endarmaturen 2, 3 wandern. Die Endarmaturen 2, 3 werden dabei weitgehend zerstört.When overloading the discharge column 29 is formed in the interior of the insulating housing 4, a large amount of gas. As a result of the increased pressure, the membranes 26 break and the gas flows outwardly in the outlet fittings 2, 3 arranged blow-out chutes 5, 6 directed. The discharge direction 7 of the Ausblasschuten 5, 6 are aligned along the outside of the insulating housing 4 and to each other. The two gas streams emerging from the discharge chutes 5, 6 thus meet one another over approximately half the length of the insulating housing 4. A resulting in the interior of the insulating 4 arc then commutes to the outside and burns between the Ausblasschuten. The arc base points can then move on the surfaces of the end fittings 2, 3. The end fittings 2, 3 are largely destroyed.

Die Figur 2 zeigt einen erfindungsgemäßen Überspannungsableiter 1, die Figur 3 einen Ausschnitt daraus im Bereich der oberen Endarmatur. Neben den in Figur 1 gezeigten Komponenten weist dieser zusätzlich zwei Lichtbogenelektroden 9, 10 auf. Die Lichtbogenelektroden 9, 10 bestehen im Wesentlichen aus jeweils einem Blechstreifen dessen Enden sich verjüngen und zu Zungen 8 umgebogen sind. Mit jeder Endarmatur 2, 3 ist eine Lichtbogenelektrode 9 ,10 elektrisch verbunden. Die Lichtbogenelektroden 9, 10 sind auf einer dem Isoliergehäuse 4 abgewandten Außenseite des Flansches 25 der Endarmaturen 2, 3 befestigt. An einem der Flansche 25 ist außerdem eine Anschlussplatte 31 zum Anschluss einer Hochspannungsleitung, am Anderen eine Montageplatte 32 zum Befestigen an einem Stützfuß angeordnet. Anschlussplatte 31 und Montageplatte 32 sind nur beispielhaft und kein Bestandteil des Überspannungsableiters 1.The FIG. 2 shows a surge arrester 1 according to the invention, the FIG. 3 a section of it in the field of upper end fitting. In addition to the in FIG. 1 shown components, this additionally has two arc electrodes 9, 10. The arc electrodes 9, 10 consist essentially of a respective metal strip whose ends are tapered and bent to tongues 8. With each end fitting 2, 3, an arc electrode 9, 10 is electrically connected. The arc electrodes 9, 10 are mounted on an insulating housing 4 facing away from the outside of the flange 25 of the end fittings 2, 3. On one of the flanges 25 is also a connection plate 31 for connection of a high voltage line, on the other a mounting plate 32 for attachment to a support foot arranged. Terminal plate 31 and mounting plate 32 are only an example and not part of the surge arrester. 1

Jeweils eine der umgebogenen Zungen 8 der Lichtbogenelektroden 9, 10 zeigt in Ausblasrichtung 7 der Ausblasschuten 5, 6. Die Zunge 8 ist derart gegenüber den Ausblasschuten 5, 6 ausgerichtet, dass ein austretender Gasstrom die Zunge 8 streift oder an ihr entlang strömt, ohne verwirbelt zu werden. Die Außenkante der Zunge 8 dient als Kontaktfläche 12 für einen Lichtbogenfußpunkt. Die Kontaktflächen 12 sind dabei radial weiter von der Längsachse 40 beabstandet, als eine Außenkontur des Isoliergehäuses 4. Ein zwischen den Kontaktflächen 12 brennender Lichtbogen wird so vom Isoliergehäuse 4 fern gehalten. Der Abstand der Kontaktflächen 12 der beiden Lichtbogenelektroden 9, 10 ist außerdem geringer, als der Abstand der Ausblasschuten 5, 6 voneinander, so dass der Lichtbogen vorzugsweise auf die Lichtbogenelektroden 9, 10 kommutiert.In each case one of the bent tongues 8 of the arc electrodes 9, 10 points in the discharge direction 7 of the Ausblasschuten 5, 6. The tongue 8 is aligned with respect to the Ausblasschuten 5, 6, that a leaking gas stream, the tongue 8 brushes or flows along it, without swirling to become. The outer edge of the tongue 8 serves as a contact surface 12 for an arc root. The contact surfaces 12 are radially further spaced from the longitudinal axis 40, as an outer contour of the insulating housing 4. A between the contact surfaces 12 burning arc is kept away from the insulating housing 4. The distance of the contact surfaces 12 of the two arc electrodes 9, 10 is also less than the distance of the Ausblasschuten 5, 6 from each other, so that the arc is preferably commutated to the arc electrodes 9, 10.

Die Lichtbogenelektroden 9, 10 sind vorzugsweise aus einem abbrandfesteren Material als die Endarmaturen 2, 3 gefertigt, halten also einem brennenden Lichtbogen länger stand. Die Endarmaturen 2, 3 können so kostengünstig aus Aluminium hergestellt werden und die Lichtbogenelektroden 9, 10 aus einem Stahl wie Baustahl oder Werkzeugstahl.The arc electrodes 9, 10 are preferably made of a more erosive material than the end fittings 2, 3, so hold a burning arc longer stand. The end fittings 2, 3 can be inexpensively made of aluminum and the arc electrodes 9, 10 of a steel such as mild steel or tool steel.

Falls die im Bereich der Ausblasschuten 5, 6 angeordnete Zunge 8 der Lichtbogenelektrode 9, 10 durch den Lichtbogen weitgehend abgebrannt ist, dient die zweite, den Ausblasschuten 5, 6 radial gegenüberliegende Zunge 8 der Lichtbogenelektroden 9, 10 dazu, den Lichtbogenfußpunkt zu übernehmen, um zu verhindern, dass er auf die Ausblasschuten 5, 6 oder andere Teile der Endarmaturen 2, 3 kommutiert.If arranged in the region of the Ausblasschuten 5, 6 tongue 8 of the arc electrode 9, 10 is largely burned off by the arc, the second, the Ausblasschuten 5, 6 radially opposite tongue 8 of the arc electrodes 9, 10 serves to take over the arc root to to prevent it from commutating with the exhaust chutes 5, 6 or other parts of the end fittings 2, 3.

Die Figur 4 zeigt eine alternative Ausführungsform der Lichtbogenelektrode 11. Hier besteht die Lichtbogenelektrode 11 aus einem um die Längsachse 40 umlaufenden Ring 13, der mittels vier Befestigungslaschen 14 am Flansch 25 der Endarmatur 2 befestigt ist. Die Befestigungslaschen 14 sind hier auf einer dem Isoliergehäuse 4 zugewandten Seite des Flansches 25 befestigt. Dadurch kann eine solche Lichtbogenelektrode 11 nachträglich an einen herkömmlichen Überspannungsableiter 30 montiert werden, ohne dass Anschlussplatte 31 oder Montageplatte 32 entfernt werden müssen. Außerdem kann der Lichtbogen auf dem umlaufenden Ring 13 wandern, ohne auf die Endarmaturen 2, 3 zu springen.The FIG. 4 shows an alternative embodiment of the arc electrode 11. Here, the arc electrode 11 consists of a circumferential around the longitudinal axis 40 ring 13 which is fixed by means of four fastening tabs 14 on the flange 25 of the end fitting 2. The fastening tabs 14 are fastened here on a side of the flange 25 facing the insulating housing 4. As a result, such an arc electrode 11 can be retrofitted to a conventional surge arrester 30 without having to remove the connection plate 31 or the mounting plate 32. In addition, the arc can travel on the rotating ring 13, without jumping on the end fittings 2, 3.

Die Figur 5 zeigt eine einzelne Lichtbogenelektrode 9 in einer alternativen Ausführung. Sie ist ähnlich aufgebaut, wie die Lichtbogenelektrode 9 der Figur 2 und 3, weist jedoch nur eine Zunge 8 auf. Wie diese weist die Lichtbogenelektrode 10 einen Flansch 15 auf, der im montierten Zustand senkrecht zur Längsachse 40 angeordnet ist. Der Flansch 15 ist eine im Wesentlichen rechteckige, hier quadratische Platte mit Befestigungslöchern 16, die im selben Lochraster angelegt sind, wie die des Flansches 25 der Endarmaturen 2, 3. Vom Flansch 15 steht eine Zunge 8 ab, die in Richtung der Längsachse 40 umgebogen ist. Zu ihrem freien Ende hin verjüngt sich die Zunge 8. Flansch 15 und Zunge 8 bilden einen stumpfen Winkel. Das freie Ende der Zunge 8 bildet die Kontaktfläche 12. In der Zunge 8 kann eine Ausnehmung 17 angeordnet sein. Dies spart Material oder macht ein auf der Ausblasschute angebrachtes Typenschild sichtbar.The FIG. 5 shows a single arc electrode 9 in an alternative embodiment. It is similar in structure, as the arc electrode 9 of FIG. 2 and 3 but has only one tongue 8. Like this, the arc electrode 10 has a flange 15, which is arranged in the mounted state perpendicular to the longitudinal axis 40. The flange 15 is a substantially rectangular, here square plate with mounting holes 16 which are created in the same hole pattern as that of the flange 25 of the end fittings 2, 3. From the flange 15 is a tongue 8, which is bent in the direction of the longitudinal axis 40 is. At its free end, the tongue tapers 8. Flange 15 and tongue 8 form an obtuse angle. The free end of the tongue 8 forms the contact surface 12. In the tongue 8, a recess 17 may be arranged. This saves material or makes a nameplate attached to the exhaust bar visible.

Claims (8)

Überspannungsableiter (1) mit einer sich zwischen zwei Endarmaturen (2, 3) entlang einer Längsachse (40) erstreckenden Ableitsäule (29), die von einem Isoliergehäuse (4) umgeben ist,
dadurch gekennzeichnet,
dass mit jeder der zwei Endarmaturen (2, 3) jeweils eine Lichtbogenelektrode (9, 10, 11) elektrisch verbunden ist, wobei jede Lichtbogenelektrode (9, 10, 11) eine Kontaktfläche (12) für einen Lichtbogenfußpunkt aufweist, wobei die Kontaktfläche (12) von der Längsachse (40) radial weiter beabstandet ist als eine Außenkontur des Isoliergehäuses (4).Surge arrester (1) having a discharge column (29) extending between two end fittings (2, 3) along a longitudinal axis (40) and surrounded by an insulating housing (4),
characterized,
in that an arc electrode (9, 10, 11) is electrically connected to each of the two end fittings (2, 3), each arc electrode (9, 10, 11) having a contact surface (12) for an arc root, wherein the contact surface (12 ) is further radially spaced from the longitudinal axis (40) as an outer contour of the insulating housing (4). Überspannungsableiter (1) nach Anspruch 1,
dadurch gekennzeichnet,
dass jede Endarmatur (2, 3) eine Ausblasschute (5, 6) zum gerichteten Ablassen eines Gasstromes aus dem Isoliergehäuse (4) in eine Ausblasrichtung (7) aufweist, wobei die Ausblasrichtungen (7) aufeinander zu gerichtet sind und wobei die Kontaktflächen (12) im Bereich des aus der Ausblasschute (5, 6) austretenden Gasstromes angeordnet sind.Surge arrester (1) according to claim 1,
characterized,
in that each end fitting (2, 3) has a blow-off bar (5, 6) for directed discharge of a gas stream from the insulating housing (4) into a discharge direction (7), the discharge directions (7) being directed toward one another and the contact surfaces (12 ) are arranged in the region of the gas flow emerging from the blow-out bar (5, 6). Überspannungsableiter (1) nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet,
dass die Lichtbogenelektroden (9, 10, 11) aus einem Material höherer Abbrandfestigkeit als dem der Endarmaturen (2, 3) hergestellt sind.Surge arrester (1) according to one of Claims 1 or 2,
characterized,
in that the arc electrodes (9, 10, 11) are made of a material having a higher erosion resistance than that of the end fittings (2, 3). Überspannungsableiter (1) nach Anspruch 3,
dadurch gekennzeichnet,
dass die Lichtbogenelektroden (9, 10, 11) aus Stahl und die Endarmaturen (2, 3) aus Aluminium hergestellt sind.Surge arrester (1) according to Claim 3,
characterized,
in that the arc electrodes (9, 10, 11) are made of steel and the end fittings (2, 3) are made of aluminum. Überspannungsableiter (1) nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
dass die Lichtbogenelektroden (9, 10, 11) jeweils einen senkrecht zur Längsachse (40) angeordneten Flansch (15) aufweisen, mittels dessen sie außen an den Endarmaturen (2, 3) befestigbar sind.Surge arrester (1) according to one of claims 1 to 4,
characterized,
that the arcing electrodes (9, 10, 11) arranged in a perpendicular to the longitudinal axis (40) of each flange (15), by means of which they externally on the end fittings (2, 3) are attachable. Überspannungsableiter (1) nach Anspruch 5,
dadurch gekennzeichnet,
dass jede Lichtbogenelektrode (9, 10, 11) wenigstens eine vom Flansch (15) abstehende und in Richtung Längsachse (40) gebogene Zunge (8) aufweist, an deren freiem Ende die Kontaktfläche (12) angeordnet ist.Surge arrester (1) according to Claim 5,
characterized,
in that each arc electrode (9, 10, 11) has at least one tongue (8) projecting from the flange (15) and bent in the direction of the longitudinal axis (40), at the free end of which the contact surface (12) is arranged. Überspannungsableiter (1) nach einem der Ansprüche 2 bis 4,
dadurch gekennzeichnet,
dass die Lichtbogenelektroden (9, 10, 11) jeweils einen um die Längsachse (40) umlaufenden Ring (13) aufweisen, wobei der Ring (13) mit der Endarmatur (2, 3) über Befestigungslaschen (14) verbunden und die Kontaktfläche (12) auf der der Ausblasschute (5) abgewandten Seite des Ringes (13) angeordnet ist.Surge arrester (1) according to one of claims 2 to 4,
characterized,
that the arcing electrodes (9, 10, 11) each have a about the longitudinal axis (40) encircling ring (13), wherein the ring (13) to the end fitting (2, 3) via fastening lugs (14) and the contact surface (12 ) is arranged on the Ausblasschute (5) facing away from the ring (13). Überspannungsableiter (1) nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet,
dass jeweils eine Lichtbogenelektrode (9, 10 ,11) außen an jeder der Endarmaturen (2, 3) befestigt ist.Surge arrester (1) according to one of claims 1 to 7,
characterized,
in that one respective arc electrode (9, 10, 11) is fastened on the outside to each of the end fittings (2, 3).
EP14182268.4A 2014-08-26 2014-08-26 Surge arrester Active EP2991084B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14182268.4A EP2991084B1 (en) 2014-08-26 2014-08-26 Surge arrester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14182268.4A EP2991084B1 (en) 2014-08-26 2014-08-26 Surge arrester

Publications (2)

Publication Number Publication Date
EP2991084A1 true EP2991084A1 (en) 2016-03-02
EP2991084B1 EP2991084B1 (en) 2022-05-11

Family

ID=51429057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14182268.4A Active EP2991084B1 (en) 2014-08-26 2014-08-26 Surge arrester

Country Status (1)

Country Link
EP (1) EP2991084B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018162274A1 (en) * 2017-03-07 2018-09-13 Siemens Aktiengesellschaft Surge arrester, and manufacturing process for a surge arrester

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588578A (en) * 1970-05-22 1971-06-28 Mc Graw Edison Co Lightning arrester venting means
US4467387A (en) * 1982-09-30 1984-08-21 General Electric Company Combination strut insulator and lightning arrester
EP0642141A1 (en) * 1993-09-06 1995-03-08 ABB Management AG Surge arrester
US5402100A (en) * 1993-12-06 1995-03-28 General Electric Company Overvoltage surge arrester with means for protecting its porcelain housing against rupture by arc-produced shocks

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588578A (en) * 1970-05-22 1971-06-28 Mc Graw Edison Co Lightning arrester venting means
US4467387A (en) * 1982-09-30 1984-08-21 General Electric Company Combination strut insulator and lightning arrester
EP0642141A1 (en) * 1993-09-06 1995-03-08 ABB Management AG Surge arrester
US5402100A (en) * 1993-12-06 1995-03-28 General Electric Company Overvoltage surge arrester with means for protecting its porcelain housing against rupture by arc-produced shocks

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018162274A1 (en) * 2017-03-07 2018-09-13 Siemens Aktiengesellschaft Surge arrester, and manufacturing process for a surge arrester

Also Published As

Publication number Publication date
EP2991084B1 (en) 2022-05-11

Similar Documents

Publication Publication Date Title
EP2842138B1 (en) Overvoltage arrester
EP3073588A1 (en) Insulation kit for an overhead line
EP2760095A1 (en) Measuring system for continuous monitoring a high-tension feed-through
EP0387865B1 (en) Spark protection device for insulated conductors, particularly for air lines
EP2854242B1 (en) Assembly for fastening an overhead line to a mast
DE60021685T2 (en) OVERVOLTAGE ARRESTER WITH CREE CHARGE DISCHARGE
EP3271927B1 (en) Overvoltage arrester system
DE202005008111U1 (en) Surge arrester has varistor block mounted between two end armatures, block being mounted in tube with tubular supports at ends
EP2991084B1 (en) Surge arrester
DE102008038486A1 (en) Overvoltage protective device for use in low-voltage mains power supply, has arc combustion chamber formed between one electrode and another electrode, and insulation section connected in series with arc combustion chamber
DE102014015611B4 (en) Surge arresters
DE3910435C2 (en)
WO2002009251A2 (en) Overvoltage protection device
CH645482A5 (en) ENCLOSED SURGE PROTECTION DEVICE FOR A HIGH VOLTAGE SYSTEM.
DE69828861T2 (en) Spark gap device for the protection of electrical lines and / or electrical apparatus against time overvoltages
DE102014102065B4 (en) Ignition element for use with an overvoltage protection element, overvoltage protection element and method for producing an ignition element
EP1143585B2 (en) Surge arrester device
EP2998970A1 (en) Surge arrester
EP3659223A1 (en) Assembly having a gas-insulated switchgear
DE2348137A1 (en) ELECTRIC HIGH VOLTAGE DEVICE WITH A METAL ENCLOSURE AND A SURGE DEVICE
DE202012100099U1 (en) Lightning protection device for a power transmission overhead line for mounting on an angle tensioning mast and power transmission line with such a device
DE824228C (en) Overvoltage protection fuse
WO2017021133A1 (en) Device having a device end that has at least one contact region for connecting to at least one counterpart, as well as a system comprising the device, and method for assembling the system
EP2712038A1 (en) Guard electrode and line arrester with such a safety electrode
WO2015028516A1 (en) Surge arrester

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20160819

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS AKTIENGESELLSCHAFT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20180821

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS ENERGY GLOBAL GMBH & CO. KG

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20211221

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1492156

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220515

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502014016235

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20220511

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220912

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220811

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220812

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220811

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220911

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502014016235

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20230214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220826

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220831

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220831

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20220831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220826

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220831

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1492156

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220826

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230822

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20230823

Year of fee payment: 10

Ref country code: DE

Payment date: 20230828

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220511

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20140826