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EP2854141B1 - Surge arrester - Google Patents

Surge arrester Download PDF

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Publication number
EP2854141B1
EP2854141B1 EP13186634.5A EP13186634A EP2854141B1 EP 2854141 B1 EP2854141 B1 EP 2854141B1 EP 13186634 A EP13186634 A EP 13186634A EP 2854141 B1 EP2854141 B1 EP 2854141B1
Authority
EP
European Patent Office
Prior art keywords
housing
contact
longitudinal axis
surge arrester
voltage
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.)
Active
Application number
EP13186634.5A
Other languages
German (de)
French (fr)
Other versions
EP2854141A1 (en
Inventor
Markus Sulitze
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 DK13186634.5T priority Critical patent/DK2854141T3/en
Priority to EP13186634.5A priority patent/EP2854141B1/en
Priority to PL13186634T priority patent/PL2854141T3/en
Priority to KR1020167008009A priority patent/KR101955078B1/en
Priority to JP2016544754A priority patent/JP6279088B2/en
Priority to PCT/EP2014/070482 priority patent/WO2015044265A1/en
Publication of EP2854141A1 publication Critical patent/EP2854141A1/en
Application granted granted Critical
Publication of EP2854141B1 publication Critical patent/EP2854141B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H01T4/04—Housings

Definitions

  • the invention relates to a surge arrester according to the preamble of patent claim 1.
  • Surge arresters are protective systems for switchgear, for example, which, in the event of overvoltages caused by lightning or malfunctions in other subsystems, dissipate these overvoltages to earth and thus protect other components of the switchgear.
  • Such a surge arrester comprises one or more cylindrical arrester elements which have a varistor column which is constructed from individual, likewise cylindrical, varistor elements.
  • Varistor elements are characterized by a voltage-dependent resistance. At low voltages, these act as insulators. Above a certain threshold voltage, which depends on the material, they show good conductivity.
  • Varistor elements are often made from metal oxides such as zinc oxide.
  • the discharge element is delimited at both ends by end fittings, which make electrical contact with the switchgear and with ground.
  • the varistor column In order to ensure good electrical contact even under mechanical stress, the varistor column must be held together under pressure. This can be done by tensioning elements such as ropes or rods, preferably made of glass fiber reinforced plastic, in the end fittings under tension. The tension elements surround the varistor column and thus form a cage around it.
  • surge arresters For use in gas-insulated switchgear, surge arresters have a fluid-tight housing that surrounds the discharge element.
  • the housing is filled with a fluid, usually sulfur hexafluoride, to increase the dielectric strength.
  • the housing is usually made of metal and is electrically grounded.
  • One end fitting of the lead column is grounded via a contact through the housing.
  • the other end fitting is electrically connected via a bushing to a contact located on the outside of the housing, which is used for connection to the switchgear.
  • surge arrester must be disconnected from the switchgear because of the high voltages that then occur. Otherwise the surge arrester would discharge the voltage to earth and the measurement result would be falsified. For this reason, surge arresters sometimes have a disconnecting device, with which the surge arrester can be disconnected from the switchgear.
  • the bushing has a high-voltage contact for each discharge element, which creates a gas-tight electrical connection from the interior of the housing to the exterior of the housing.
  • the bushing is often made of cast resin, into which the high-voltage contacts are cast. The position of the contacts is often specified by the operator or manufacturer of the switchgear.
  • the housing had to be designed with the arrangement of the diverter elements and, if necessary, the separating device.
  • a surge arrester with three discharge columns is known.
  • the discharge columns are arranged radially outwards to the high-voltage contacts.
  • a contact element guided through the end fitting of the diverter elements can be displaced in the axial direction by means of a push rod and establishes or disconnects the high-voltage contact.
  • WO 2012/168112 A1 a generic surge arrester is known, the discharge element of which is arranged concentrically with the high-voltage contact.
  • a movable control hood serves as a separator.
  • publications WO 2011/054524 A1 such as WO 2008/028724 A1 known.
  • the object of the present invention is to provide a surge arrester with more flexible design options.
  • a surge arrester has a fluid-tight housing and a diverter element arranged in the fluid-tight housing.
  • the discharge element comprises a discharge column made of varistor elements, an end fitting at each of the ends and tension elements clamped in the end fittings and arranged around the discharge column and is aligned with its longitudinal axis parallel to the housing axis.
  • the surge arrester comprises a bushing with a high-voltage contact, which electrically connects the inside to the outside of the housing (2), and a contact element, which is electrically connected to the discharge element, and via which an electrical connection from the discharge element to the high-voltage contact can be established.
  • the contact element is arranged eccentrically to the longitudinal axis and the position of the contact element can be adjusted in a plane perpendicular to the longitudinal axis.
  • the contact element can be set to different positions of the high-voltage contact and / or the diverter element can be positioned differently within the setting limits of the contact element.
  • the surge arrester can be adapted to bushings with a different arrangement of the high-voltage contacts, without this resulting in structural changes to other components.
  • the discharge element be arranged independently of the arrangement of the high-voltage contact, which enables a more flexible construction.
  • the contact element is connected to the discharge element by an eccentric disk.
  • the eccentric disc can be rotated about the longitudinal axis.
  • the contact element is arranged eccentrically on the eccentric disk, that is to say at a distance from the longitudinal axis, and is mechanically and electrically connected to it.
  • the eccentric disc is made of an electrically conductive material.
  • a rotation of the eccentric disc about the longitudinal axis causes the contact element to rotate about a circular path.
  • the high-voltage contact can now be positioned anywhere on this circular path. If the position of the high-voltage contact and thus of the contact element is fixed, the conductor element can be arranged anywhere on the circular path around the contact element.
  • the contact element is preferably designed in the form of a pin and is inserted in a guide bore of the eccentric disk which is arranged eccentrically to the longitudinal axis. This opens up structural degrees of freedom in a particularly simple manner.
  • the eccentric disc has a cylindrical recess which is concentric with the longitudinal axis. An end fitting of the diverter element can be inserted into this recess. If the end fitting and recess are round, the eccentric disc can be freely rotated around the end fitting. A polygonal design of the end fitting and recess is also possible. The eccentric disc can then be turned in steps according to the number of corners around the longitudinal axis of the end fitting. In both variants, the contact element is arranged on the side of the eccentric disc opposite the recess. In this way, a rotatable electrical and mechanical connection between the diverter element and the eccentric disk can be made particularly simply by plugging together.
  • the contact element can be displaced parallel to the longitudinal axis by means of a displacement device.
  • the displacement device is preferably adjustable at different positions of the contact element.
  • the contact element in the guide bore of the eccentric disk is preferably guided in the longitudinal direction, that is to say parallel to the longitudinal axis.
  • a surge arrester with a disconnecting device can thus be constructed considerably more simply, since a changed arrangement of the high-voltage contact has no constructive effects on the separating device. The setting of the separating device to the position of the contact element can easily be done during assembly.
  • the displacement device has a connecting rod connected to the contact element and a central rod which is guided gas-tight from the inside of the housing to the outside and can be moved outside the housing by an actuating device.
  • a coupling element is connected to the central rod and to the push rod, the coupling element being connected to the push rod by means of a connecting element.
  • the connecting element is preferably guided in a direction parallel to the longitudinal axis by a guide rod connected to the housing. This ensures that the connecting element and thus the push rod are guided independently of the diverter element.
  • the guide rod is likewise preferably fixedly connected to the housing cover with a first end. This allows a particularly simple assembly. It is further preferred that a second end of the guide rod is inserted through a hole in the connecting element and that the connecting element is displaceable along the guide rod. This also serves for easier assembly.
  • the coupling element has an arm that is connected to the coupling block and inserted into a bore in the connecting element.
  • the guide rod engages in a groove of the arm in such a way that the connecting element is fixed in a direction perpendicular to the longitudinal axis. This allows the displacement device to be simply plugged together without gluing, screwing or other fixing means.
  • an intermediate piece is arranged in the housing, which has a first end fitting, which is connected to the high-voltage contact concentrically to the longitudinal axis, and a second end fitting, which is inserted into a second eccentric disk.
  • the contact element is inserted into a second guide bore in the second eccentric disk.
  • the intermediate piece has a second diverting element.
  • the number of varistor elements required for a specific switchgear assembly is thus divided into two diverting elements. The smaller part is arranged in the second diverting element. This simplifies storage, since only the smaller intermediate piece has to be kept in different lengths.
  • the surge arrester has a plurality of arrester elements and a plurality of high-voltage contacts, the number of arrester elements being equal to that of the high-voltage contacts.
  • the discharge elements are preferably arranged rotationally symmetrically on a first pitch circle around the housing axis.
  • the high voltage contacts are also preferably arranged rotationally symmetrically on a second pitch circle around the housing axis.
  • Each of the diverting elements has an adjustable contact element. The contact elements are set such that their position lies on the second pitch circle. Discharge elements and high-voltage contacts can lie on different sub-circles. With the diameter of the first pitch circle remaining the same, the contact elements can be adjusted to different diameters of the second pitch circle.
  • the surge arrester can be adjusted with the arrangement of the arrester elements on bushings with a different arrangement of the high-voltage contacts.
  • a trunk surge arrester i.e. a surge arrester without bushing, can be prefabricated and assembled with different bushings to form a surge arrester by adjusting the contact elements to the respective arrangement of the high-voltage contacts in the bushing during assembly.
  • FIGS. 1 and 2nd show a surge arrester 1.
  • a fluid-tight housing 2 in which the essentially cylindrical housing wall is not shown, here three diverter elements 5, which are provided for the protection of a three-phase gas-insulated switchgear, are rotationally symmetrical in a triangle arranged around a housing axis 50 on a first pitch circle 30.
  • These discharge elements 5 each have a cylindrical discharge column 12, a high-voltage end fitting 7, an earth-side end fitting 6 and a plurality of tension elements 11.
  • the deflection column 12 is composed of individual, also cylindrical varistor blocks.
  • the end fittings 6, 7 mostly consist of electrically conductive material.
  • the tension elements 11 are pressed under tension in the end fittings 6, 7 and thus hold the deflecting column 12 together.
  • the housing 2 is essentially cylindrical.
  • the housing axis 50 which defines an axial direction, extends along the cylinder axis.
  • the discharge element 5 is aligned with its longitudinal axis 40 parallel to this housing axis 50.
  • the housing 2 is closed in a fluid-tight manner on the two cover surfaces.
  • the cover surface of the housing 2 is closed with a housing cover 22 on an earth connection side of the diverter element 5.
  • a ground contact 3 is electrically insulated through a housing cover 22, not shown, through the housing cover 22 from the inside to the outside of the housing 2 and is used for the ground connection. In the interior of the housing 2, this earth contact 3 is electrically conductively connected to the discharge element 5. If several conductor elements 5 are arranged in the housing 2, each conductor element 5 is connected to its own earth contact 3.
  • the end fitting 6 on the earth side is spaced from the housing cover 22 by an insulating washer 25 and is fastened to the bushing on the earth side.
  • the housing cover 22 generally has a connection (not shown here) via which a fluid, for example sulfur hexafluoride, can be introduced into or drained from the housing 2.
  • a fluid for example sulfur hexafluoride
  • the housing 2 can also have other devices such as a maintenance opening or a burst protection.
  • the top surface of the housing 2 is provided with a high-voltage bushing 14 in order to store the electrical high-voltage potential to lead into the housing 2 from the outside without the risk of a flashover between the high voltage and the grounded housing 2.
  • the bushing 14 is designed here as a three-pole bushing 14 which leads three high-voltage contacts 4 insulated from one another and from the housing into the housing 2.
  • the high-voltage contacts 4 are arranged rotationally symmetrically around the housing axis 50 on a second pitch circle 31.
  • the surge arrester 1 can be connected to a three-phase gas-insulated switchgear (not shown) via the high-voltage contacts 4. Inside the housing 2, the high-voltage contacts 4 protrude into the housing 2. On the inside of the housing 2, they have a blind hole into which a contact element 9 can be inserted. Alternatively, an embodiment is possible in which the contact element 9 rests on the inside of the high-voltage contact 4.
  • a hood-like eccentric disk 60 is attached to the high-voltage end fitting 7 and, if necessary, secured with grub screws.
  • the eccentric disc 60 has on its underside a cylindrical recess 62 which corresponds in shape and size to the high-voltage end fitting 7.
  • the outer corners and edges of the eccentric disc 60 are rounded in order to avoid field peaks. If the eccentric disc 60 is plugged onto the high-voltage end fitting 7, it can be rotated about a central axis of the diverter element 5 as the axis of rotation.
  • the contact element 9 is arranged on the outside of the eccentric disk 60 at a distance from the axis of rotation.
  • the contact element 9 By rotating the eccentric disk 60, the contact element 9 is moved in a circular path about the longitudinal axis 40 and can thereby be adjusted radially to the housing axis 50. In the desired position of the contact element 9, the eccentric disc 60 is fixed to the end fitting 7, for example with grub screws.
  • the surge arrester 1 can be easily adapted to different arrangements of the high-voltage contacts 4 without the arrangement of the diverter elements 5 having to be changed.
  • the Figures 1 and 2nd show surge arrester 1 with different arrangements of the high voltage contacts 4.
  • the Figure 2 have the high voltage contacts compared to those of Figure 1 a larger distance from the housing axis 50, correspondingly a larger diameter of the second pitch circle 31.
  • the arrangement of the diverter elements 5 and thus the diameter of the first pitch circle 30 is the same in both figures.
  • the eccentric discs 60 are in the Figure 2 compared to those of Figure 1 corresponding to the larger diameter of the second pitch circle 31 rotated outwards and thus on the opposite Figure 1 different arrangement of the high-voltage contacts 9 set.
  • Bushings 14 with different arrangements of the high-voltage contacts 9 can thus be installed in the surge arrester 1 without this having any influence on the arrangement of the diverter elements 5.
  • FIG Figure 3 Another embodiment is shown in FIG Figure 3 shown.
  • the discharge element 5 has as in the Figures 1 and 2nd an eccentric disc 60 around the end fitting 7, on which a contact element 9 is arranged.
  • a second diverting element 70 is arranged in the housing 2.
  • the second discharge element 70 is connected to the high-voltage contact 4 by a first end fitting 71.
  • a toroidal screen 73 around the first end fitting 71 ensures a uniform field distribution.
  • a second end fitting 72 of the second diverter element 70 is inserted into an eccentric disk 74.
  • This eccentric disk 74 has a bore instead of a contact element 9.
  • the longitudinal axis of the second diverting element 70 is arranged centrally with the high-voltage contact 4. For this purpose, the longitudinal axis of the diverting element 5 is arranged off-center.
  • the eccentric disks 60 and 74 can be rotated relative to one another in such a way that the contact element 9 can be inserted into the bore of the eccentric disk 74.
  • the diverter element 5 can be arranged more flexibly on the cover 22 and does not have to be arranged centrally on the cover 22 as before. This creates greater scope for placement of additional ones Components such as the actuator 23, filling devices for the insulating fluid, monitoring devices and the like are achieved.
  • the second diverter element 70 can also be dispensed with and the eccentric disk 74 can be placed directly on the high-voltage contact 4.
  • the second arrester 70 can be used to easily adapt the surge arrester to different requirements.
  • the number of varistor elements required is determined by the switchgear specification, including the voltage level. Previously, different specifications required a diverting element 5 of different lengths. As a result, either the housing 2 had to be adapted to the required length of the diverter element 5, or the diverter element 5 was extended by conductive inserts inserted into the diverter column 12 in order to be able to use a housing 2 of a certain size.
  • the fact that the number of varistor elements required is divided into two diverting elements 5, 70 reduces the outlay in terms of production and storage.
  • the second diverter element 70 is either prefabricated in the most frequently required lengths, or is manufactured as required. Since the second diverter element 70 has fewer varistor elements than the diverter element 5, only a relatively small component in a certain number of variants has to be manufactured or kept available. All other components such as the diverting element 5, the housing 2 or, if appropriate, the actuating device 23 remain the same in all or at least several variants and can thus be produced more economically.
  • the second diverting element 70 can also be replaced by a cylindrical conductive intermediate piece, for example a metal cylinder. The same housing size can thus be used, even if no further varistor elements are required in addition to the varistor elements installed in the diverting element 5.
  • the Figures 1 , 2nd and 3rd also show an optional separation device comprising a separation point 10 and a displacement device 8 for the contact element 9.
  • the separation point 10 can be closed with a contact element 9.
  • the contact element 9 is cylindrical as a pin or sleeve, and can be moved in a guide bore 26 of the eccentric 60 in the axial direction.
  • the guide bore 26 and the contact element 9 are matched to one another in such a way that there is both mechanical guidance and a good electrical connection between the contact element 9 and the eccentric disk 60.
  • sliding or sliding contacts such as the contact lamella 61 inserted in a ring in the contact element 9 can establish the electrical connection. If the contact element 9 is moved to the high-voltage contact 4, the disconnection point 10 is closed.
  • the contact element 9 inserted into the guide bore 26 then rotates around the diverter element 5.
  • the end fitting 7 is completely inserted into the recess 62.
  • the outer edges of the eccentric disk 60 are rounded in order to avoid field peaks.
  • the eccentric disc 60 thus simultaneously shields the end fitting 7.
  • the connection between the contact element 9 and the high-voltage contact 4 is designed here as a plug contact.
  • the contact element is in a contact bore 63 of the high-voltage contact 4 inserted.
  • contact blades 61 ensure good mechanical and electrical contact between contact element 9 and high-voltage contact 4.
  • the movement of the contact element 9 takes place by means of a displacement device 8, which in the Figure 5 is shown.
  • This has an actuating device 23, a central rod 16, a coupling element 17 and push rods 15.
  • the actuating device 23 lying outside the housing 2 is connected to the central rod 16, which is guided into the housing 2 in a gas-tight manner.
  • the coupling element 17 is arranged on the central rod 16 in the interior of the housing 2.
  • Central rod 16 and coupling element 17 form a threaded drive in that central rod 16 has an external thread and coupling element 17 has a corresponding internal thread, for example a trapezoidal thread.
  • a radially outwardly pointing arm 19 is arranged for each diverter element 5, on the outer end of which a connecting element 20 is arranged for receiving the push rods 15.
  • the push rods 15 are fixed at one end in this connecting element 20 and connected at the other end to the contact element 9, for example screwed or glued.
  • a guide rod 28 is fastened to the cover 22, for example screwed as shown here.
  • the guide rod 28 projects into the housing 2 parallel to the housing axis 50. The other end is inserted into a hole in the connecting element 20.
  • the connecting element can slide up and down on the guide rod 28 and is thereby guided in the longitudinal direction.
  • the central rod 16 rotates inside the housing 2 and transmits the rotating movement of the actuating device 23 by means of the coupling element 17, the arms 19 and the connecting elements 20 to the push rods 15 and thus to the contact elements 9.
  • the separation point 10 is opened or closed in the direction of movement.
  • the holes for the guide rod 28 and the push rod 15 are arranged in the connecting element 20 so that they can be exchanged by rotating the connecting element 20 through 180 ° around the arm 19. With the position of the guide rod 28 remaining the same, this results in a different position of the push rod 15.
  • the eccentric disc 60 can be set to two positions by merely rotating the connecting element 20. By exchanging the connecting element 20, further positions of the eccentric disk 60 can be set.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Details Of Resistors (AREA)
  • Thermistors And Varistors (AREA)

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 Schaltanlagen, die bei auftretenden Überspannungen durch Blitzeinschlag oder Fehlfunktionen anderer Teilsysteme diese Überspannungen zur Masse hin ableiten und so andere Bauteile der Schaltanlage schützen.Surge arresters are protective systems for switchgear, for example, which, in the event of overvoltages caused by lightning or malfunctions in other subsystems, dissipate these overvoltages to earth and thus protect other components of the switchgear.

Ein derartiger Überspannungsableiter umfasst ein oder mehrere zylindrische Ableitelemente, die eine aus einzelnen ebenfalls zylindrischen Varistorelementen aufgebaute Varistorsäule aufweisen. Varistorelemente 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 Varistorelemente aus Metalloxiden wie Zinkoxid hergestellt. Das Ableitelement wird an beiden Enden von Endarmaturen begrenzt, die den elektrischen Kontakt zur Schaltanlage und zur Masse herstellen. Um einen guten elektrischen Kontakt auch unter mechanischer Belastung zu gewährleisten, muss die Varistorsäule unter Druck zusammengehalten werden. Dies kann erfolgen, indem Zugelemente beispielsweise Seile oder Stäbe vorzugsweise aus glasfaserverstärktem Kunststoff in den Endarmaturen unter Zug eingespannt werden. Die Zugelemente umgeben dabei die Varistorsäule und bilden so einen Käfig um diese.Such a surge arrester comprises one or more cylindrical arrester elements which have a varistor column which is constructed from individual, likewise cylindrical, varistor elements. Varistor elements are characterized by a voltage-dependent resistance. At low voltages, these act as insulators. Above a certain threshold voltage, which depends on the material, they show good conductivity. Varistor elements are often made from metal oxides such as zinc oxide. The discharge element is delimited at both ends by end fittings, which make electrical contact with the switchgear and with ground. In order to ensure good electrical contact even under mechanical stress, the varistor column must be held together under pressure. This can be done by tensioning elements such as ropes or rods, preferably made of glass fiber reinforced plastic, in the end fittings under tension. The tension elements surround the varistor column and thus form a cage around it.

Für den Einsatz in gasisolierten Schaltanlagen weisen Überspannungsableiter ein fluiddichtes Gehäuse auf, das das Ableitelement umgibt. Das Gehäuse ist dabei zur Erhöhung der Durchschlagfestigkeit mit einem Fluid, meist Schwefelhexafluorid, gefüllt. Das Gehäuse besteht meist aus Metall und ist elektrisch geerdet. Eine Endarmatur der Ableitsäule ist über einen durch das Gehäuse geführten Kontakt geerdet. Die andere Endarmatur ist über eine Durchführung mit einem an der Außenseite des Gehäuses befindlichen Kontakt elektrisch verbunden, der dem Anschluss an die Schaltanlage dient.For use in gas-insulated switchgear, surge arresters have a fluid-tight housing that surrounds the discharge element. The housing is filled with a fluid, usually sulfur hexafluoride, to increase the dielectric strength. The housing is usually made of metal and is electrically grounded. One end fitting of the lead column is grounded via a contact through the housing. The other end fitting is electrically connected via a bushing to a contact located on the outside of the housing, which is used for connection to the switchgear.

Soll die Schaltanlage elektrisch getestet werden, so muss wegen der dann auftretenden hohen Spannungen der Überspannungsableiter von der Schaltanlage getrennt werden. Andernfalls würde der Überspannungsableiter die Spannung zur Erde ableiten und das Messergebnis würde verfälscht. Deswegen weisen Überspannungsableiter manchmal eine Trennvorrichtung auf, womit der Überspannungsableiter von der Schaltanlage getrennt werden kann.If the switchgear is to be tested electrically, the surge arrester must be disconnected from the switchgear because of the high voltages that then occur. Otherwise the surge arrester would discharge the voltage to earth and the measurement result would be falsified. For this reason, surge arresters sometimes have a disconnecting device, with which the surge arrester can be disconnected from the switchgear.

Die Durchführung weist für jedes Ableitelement einen Hochspannungskontakt auf, der eine gasdichte elektrische Verbindung vom Gehäuseinneren zum Gehäuseäußeren herstellt. Bei gasisolierten Überspannungsableitern ist die Durchführung häufig aus Gießharz, in das die Hochspannungskontakte eingegossen sind. Dis Position der Kontakte wird häufig durch Betreiber oder Hersteller der Schaltanlage vorgegeben. Bislang musste das Gehäuse mit der Anordnung der Ableitelemente sowie gegebenenfalls die Trennvorrichtung darauf hin konstruiert werden.The bushing has a high-voltage contact for each discharge element, which creates a gas-tight electrical connection from the interior of the housing to the exterior of the housing. With gas-insulated surge arresters, the bushing is often made of cast resin, into which the high-voltage contacts are cast. The position of the contacts is often specified by the operator or manufacturer of the switchgear. Until now, the housing had to be designed with the arrangement of the diverter elements and, if necessary, the separating device.

Aus der Anmeldung mit dem Anmeldeaktenzeichen DE 10 2012 217 310.2 (201222978) ist ein Überspannungsableiter mit drei Ableitsäulen bekannt. Die Ableitsäulen sind radial nach außen versetzt zu den Hochspannungskontakten angeordnet. Ein durch die Endarmatur der Ableitelemente geführtes Kontaktelement ist mittels einer Schubstange in axialer Richtung verschiebbar und stellt die Verbindung zum Hochspannungskontakt her oder trennt diese.From the registration with the registration number DE 10 2012 217 310.2 (201222978) a surge arrester with three discharge columns is known. The discharge columns are arranged radially outwards to the high-voltage contacts. A contact element guided through the end fitting of the diverter elements can be displaced in the axial direction by means of a push rod and establishes or disconnects the high-voltage contact.

Allen im Stand der Technik bekannten Überspannungsableitern ist gemeinsam, dass die Lage und Anordnung der Ableitsäulen durch die Geometrie der Hochspannungskontakte bestimmt ist.All surge arresters known in the prior art have in common that the position and arrangement of the arrester columns is determined by the geometry of the high-voltage contacts.

Aus der WO 2012/168112 A1 ist ein gattungsgemäßer Überspannungsableiter bekannt, dessen Ableitelement konzentrisch zum Hochspannungskontakt angeordnet ist. Eine bewegliche Steuerhaube dient dabei als Trennvorrichtung. Ferner sind die Druckschriften WO 2011/054524 A1 sowie WO 2008/028724 A1 bekannt.From the WO 2012/168112 A1 a generic surge arrester is known, the discharge element of which is arranged concentrically with the high-voltage contact. A movable control hood serves as a separator. Furthermore, the publications WO 2011/054524 A1 such as WO 2008/028724 A1 known.

Aufgabe der vorliegenden Erfindung ist es, einen Überspannungsableiter mit flexibleren Konstruktionsmöglichkeiten anzugeben.The object of the present invention is to provide a surge arrester with more flexible design options.

Die Aufgabe wird mit den Mitteln der Erfindung gemäß Patentanspruch 1 gelöst.The object is achieved with the means of the invention according to claim 1.

Dazu weist ein Überspannungsableiter ein fluiddichtes Gehäuse und ein in dem fluiddichten Gehäuse angeordnetes Ableitelement auf. Das Ableitelement umfasst eine Ableitsäule aus Varistorelementen, eine Endarmatur an jedem der Enden und in den Endarmaturen eingespannte und um die Ableitsäule angeordnete Zugelemente und ist mit seiner Längsachse parallel zur Gehäuseachse ausgerichtet. Außerdem umfasst der Überspannungsableiter eine Durchführung mit einem Hochspannungskontakt, der das Innere mit dem Äußeren des Gehäuses (2) elektrisch verbindet, und ein Kontaktelement, das mit dem Ableitelement elektrisch verbunden ist, und über das eine elektrische Verbindung vom Ableitelement zum Hochspannungskontakt herstellbar ist. Erfindungsgemäß ist das Kontaktelement exzentrisch zur Längsachse angeordnet und die Position des Kontaktelementes ist in einer Ebene senkrecht zur Längsachse einstellbar. Somit kann bei gleichbleibender Position des Ableitelementes das Kontaktelement auf unterschiedliche Positionen des Hochspannungskontaktes eingestellt werden und/oder das Ableitelement innerhalb der Einstellgrenzen des Kontaktelementes unterschiedlich positioniert werden. Im ersten Fall kann der Überspannungsableiter auf Durchführungen mit unterschiedlicher Anordnung der Hochspannungskontakte angepasst werden, ohne, dass dies konstruktive Änderungen an anderen Bauteilen zur Folge hat. Im zweiten Fall kann das Ableitelement unabhängig von der Anordnung des Hochspannungskontaktes angeordnet werden, wodurch eine flexiblere Konstruktion ermöglicht wird.For this purpose, a surge arrester has a fluid-tight housing and a diverter element arranged in the fluid-tight housing. The discharge element comprises a discharge column made of varistor elements, an end fitting at each of the ends and tension elements clamped in the end fittings and arranged around the discharge column and is aligned with its longitudinal axis parallel to the housing axis. In addition, the surge arrester comprises a bushing with a high-voltage contact, which electrically connects the inside to the outside of the housing (2), and a contact element, which is electrically connected to the discharge element, and via which an electrical connection from the discharge element to the high-voltage contact can be established. According to the invention, the contact element is arranged eccentrically to the longitudinal axis and the position of the contact element can be adjusted in a plane perpendicular to the longitudinal axis. Thus, with the position of the diverter element remaining the same, the contact element can be set to different positions of the high-voltage contact and / or the diverter element can be positioned differently within the setting limits of the contact element. In the first case, the surge arrester can be adapted to bushings with a different arrangement of the high-voltage contacts, without this resulting in structural changes to other components. In the second case, the discharge element be arranged independently of the arrangement of the high-voltage contact, which enables a more flexible construction.

Das Kontaktelement ist durch eine Exzenterscheibe mit dem Ableitelement verbunden. Die Exzenterscheibe ist dabei um die Längsachse drehbar. Das Kontaktelement ist auf der Exzenterscheibe exzentrisch, also beabstandet zur Längsachse angeordnet und mit ihr mechanisch und elektrisch verbunden. Die Exzenterscheibe ist dabei aus einem elektrisch leitenden Material hergestellt. Eine Drehung der Exzenterscheibe um die Längsachse bewirkt dabei eine Drehung des Kontaktelementes um diese auf einer Kreisbahn. Der Hochspannungskontakt lässt sich nun beliebig auf dieser Kreisbahn positionieren. Liegt die Position des Hochspannungskontaktes und damit des Kontaktelementes fest, lässt sich das Ableitelement beliebig auf der Kreisbahn um das Kontaktelement anordnen. Bevorzugt ist das Kontaktelement stiftartig ausgeführt und in einer exzentrisch zur Längsachse angeordneten Führungsbohrung der Exzenterscheibe eingesteckt. Dies eröffnet auf besonders einfache Weise konstruktive Freiheitsgrade.The contact element is connected to the discharge element by an eccentric disk. The eccentric disc can be rotated about the longitudinal axis. The contact element is arranged eccentrically on the eccentric disk, that is to say at a distance from the longitudinal axis, and is mechanically and electrically connected to it. The eccentric disc is made of an electrically conductive material. A rotation of the eccentric disc about the longitudinal axis causes the contact element to rotate about a circular path. The high-voltage contact can now be positioned anywhere on this circular path. If the position of the high-voltage contact and thus of the contact element is fixed, the conductor element can be arranged anywhere on the circular path around the contact element. The contact element is preferably designed in the form of a pin and is inserted in a guide bore of the eccentric disk which is arranged eccentrically to the longitudinal axis. This opens up structural degrees of freedom in a particularly simple manner.

In einer vorteilhaften Ausführung der Erfindung weist die Exzenterscheibe eine zylindrische Ausnehmung auf, die konzentrisch zur Längsachse ist. In diese Ausnehmung ist eine Endarmatur des Ableitelementes einsteckbar. Sind Endarmatur und Ausnehmung rund, so lässt sich die Exzenterscheibe frei um die Endarmatur drehen. Möglich ist auch eine mehreckige Ausführung von Endarmatur und Ausnehmung. Dann lässt sich die Exzenterscheibe in Schritten entsprechend der Eckenzahl um die Längsachse der Endarmatur drehen. Das Kontaktelement ist in beiden Varianten auf der der Ausnehmung gegenüber liegenden Seite der Exzenterscheibe angeordnet. Auf diese Weise lässt sich besonders einfach durch Zusammenstecken eine drehbare elektrische und mechanische Verbindung zwischen Ableitelement und Exzenterscheibe herstellen.In an advantageous embodiment of the invention, the eccentric disc has a cylindrical recess which is concentric with the longitudinal axis. An end fitting of the diverter element can be inserted into this recess. If the end fitting and recess are round, the eccentric disc can be freely rotated around the end fitting. A polygonal design of the end fitting and recess is also possible. The eccentric disc can then be turned in steps according to the number of corners around the longitudinal axis of the end fitting. In both variants, the contact element is arranged on the side of the eccentric disc opposite the recess. In this way, a rotatable electrical and mechanical connection between the diverter element and the eccentric disk can be made particularly simply by plugging together.

In einer weiteren bevorzugten Ausführung der Erfindung ist das Kontaktelement mittels einer Verschiebeeinrichtung parallel zur Längsachse verschiebbar. Dadurch ist eine elektrische Verbindung zwischen Ableitelement und Hochspannungskontakt herstellbar oder trennbar. Die Verschiebeeinrichtung ist dabei bevorzugt an unterschiedliche Positionen des Kontaktelementes einstellbar. Bevorzugt ist dabei das Kontaktelement in der Führungsbohrung der Exzenterscheibe in Längsrichtung, also parallel zur Längsachse, geführt verschiebbar. Somit lässt sich ein Überspannungsableiter mit einer Trennvorrichtung erheblich einfacher konstruieren, da eine veränderte Anordnung des Hochspannungskontaktes keine konstruktiven Auswirkungen auf die Trennvorrichtung hat. Die Einstellung der Trennvorrichtung an die Position des Kontaktelementes kann leicht bei der Montage erfolgen.In a further preferred embodiment of the invention, the contact element can be displaced parallel to the longitudinal axis by means of a displacement device. As a result, an electrical connection between the discharge element and the high-voltage contact can be established or separated. The displacement device is preferably adjustable at different positions of the contact element. The contact element in the guide bore of the eccentric disk is preferably guided in the longitudinal direction, that is to say parallel to the longitudinal axis. A surge arrester with a disconnecting device can thus be constructed considerably more simply, since a changed arrangement of the high-voltage contact has no constructive effects on the separating device. The setting of the separating device to the position of the contact element can easily be done during assembly.

Vorteilhaft ist auch, dass die Verschiebeeinrichtung eine mit dem Kontaktelement verbundene Schubstange und eine vom Inneren des Gehäuses gasdicht nach außen geführte und außerhalb des Gehäuses durch eine Betätigungseinrichtung bewegbare Zentralstange aufweist. Zur Übertragung einer Bewegung der Betätigungseinrichtung auf das Kontaktelement ist ein Koppelelement mit der Zentralstange und mit der Schubstange verbunden, wobei das Koppelelement mittels eines Verbindungselements mit der Schubstange verbunden ist. Eine solche Trennvorrichtung lässt sich vorteilhaft betätigen, ohne das Gehäuse zu öffnen. Bevorzugt ist das Verbindungselement durch ein mit dem Gehäuse verbundenen Führungsstab in einer Richtung parallel zur Längsachse geführt. Dies gewährleistet eine vom Ableitelement unabhängige Führung des Verbindungselementes und damit der Schubstange. Ebenso bevorzugt ist der Führungsstab mit einem ersten Ende fest mit dem Gehäusedeckel verbunden. Dies erlaubt eine besonders einfache Montage. Weiterhin ist bevorzugt, dass ein zweites Ende des Führungsstabes durch eine Bohrung im Verbindungselement gesteckt und das Verbindungselement entlang des Führungsstabes verschiebbar ist. Auch dies dient der einfacheren Montage.It is also advantageous that the displacement device has a connecting rod connected to the contact element and a central rod which is guided gas-tight from the inside of the housing to the outside and can be moved outside the housing by an actuating device. To transmit a movement of the actuating device to the contact element, a coupling element is connected to the central rod and to the push rod, the coupling element being connected to the push rod by means of a connecting element. Such a separating device can advantageously be operated without opening the housing. The connecting element is preferably guided in a direction parallel to the longitudinal axis by a guide rod connected to the housing. This ensures that the connecting element and thus the push rod are guided independently of the diverter element. The guide rod is likewise preferably fixedly connected to the housing cover with a first end. This allows a particularly simple assembly. It is further preferred that a second end of the guide rod is inserted through a hole in the connecting element and that the connecting element is displaceable along the guide rod. This also serves for easier assembly.

Vorteilhaft ist ebenfalls, dass das Koppelelement einen Arm aufweist, der mit dem Koppelblock verbunden und in eine Bohrung des Verbindungselements eingesteckt ist. Dabei greift der Führungsstab derart in eine Nut des Arms ein, dass das Verbindungselement in einer zur Längsachse senkrechten Richtung festgelegt ist. Dies erlaubt ein einfaches Zusammenstecken der Verschiebeeinrichtung ohne Kleben, Schrauben oder andere Fixierungsmittel.It is also advantageous that the coupling element has an arm that is connected to the coupling block and inserted into a bore in the connecting element. The guide rod engages in a groove of the arm in such a way that the connecting element is fixed in a direction perpendicular to the longitudinal axis. This allows the displacement device to be simply plugged together without gluing, screwing or other fixing means.

Bevorzugt wird auch, dass in dem Gehäuse ein Zwischenstück angeordnet ist, das eine erste Endarmatur, die konzentrisch zur Längsachse mit dem Hochspannungskontakt verbunden ist und eine zweite Endarmatur, die in eine zweite Exzenterscheibe eingesteckt ist, aufweist. Dabei ist das Kontaktelement in eine zweite Führungsbohrung der zweiten Exzenterscheibe eingesteckt. Mittel des Zwischenstücks lässt ein Gehäuse mit einer bestimmten Länge mit unterschiedlich langen Ableitelementen bestücken. Der Längenausgleich erfolgt dabei durch die gegenüber den Ableitelementen erheblich einfacheren Zwischenstücken. Die beiden Exzenterscheiben sind drehbar um die jeweilige Endarmatur angeordnet, das Kontaktelement verbindet beide. Dadurch lassen sich Ableitelement und Zwischenstück in einem weiten Bereich frei zueinander positionieren.It is also preferred that an intermediate piece is arranged in the housing, which has a first end fitting, which is connected to the high-voltage contact concentrically to the longitudinal axis, and a second end fitting, which is inserted into a second eccentric disk. The contact element is inserted into a second guide bore in the second eccentric disk. By means of the intermediate piece, a housing of a certain length can be equipped with discharge elements of different lengths. The length is compensated for by the intermediate pieces, which are considerably simpler than the deflection elements. The two eccentric discs are rotatable around the respective end fitting, the contact element connects the two. This allows the diverting element and intermediate piece to be freely positioned in relation to one another.

In einer vorteilhaften Ausführung weist das Zwischenstück ein zweites Ableitelement auf. Die für eine bestimmte Schaltanlage benötigte Anzahl der Varistorelemente wird so auf zwei Ableitelemente aufgeteilt. Der kleinere Teil ist dabei im zweiten Ableitelement angeordnet. Das vereinfacht die Lagerhaltung, da nur das kleinere Zwischenstück in verschiedenen Längen vorrätig gehalten werden muss.In an advantageous embodiment, the intermediate piece has a second diverting element. The number of varistor elements required for a specific switchgear assembly is thus divided into two diverting elements. The smaller part is arranged in the second diverting element. This simplifies storage, since only the smaller intermediate piece has to be kept in different lengths.

Weiterhin ist vorteilhaft, dass der Überspannungsableiter mehrere Ableitelemente und mehrere Hochspannungskontakte aufweist, wobei die Anzahl der Ableitelemente gleich der der Hochspannungskontakte ist. Die Ableitelemente sind dabei bevorzugt rotationssymmetrisch auf einem ersten Teilkreis um die Gehäuseachse angeordnet. Die Hochspannungskontakte sind ebenfalls bevorzugt rotationssymmetrisch auf einen zweiten Teilkreis um die Gehäuseachse angeordnet. Jedes der Ableitelemente weist ein einstellbares Kontaktelement auf. Die Kontaktelemente sind derart eingestellt, dass ihre Position auf dem zweiten Teilkreis liegt. Ableitelemente und Hochspannungskontakte können so auf unterschiedlichen Teilkreisen liegen. Bei gleichbleibendem Durchmesser des ersten Teilkreises sind die Kontaktelemente so an unterschiedliche Durchmesser des zweiten Teilkreises einstellbar. Somit ist der Überspannungsableiter bei gleichbleibender Anordnung der Ableitelemente an Durchführungen mit unterschiedlicher Anordnung der Hochspannungskontakte einstellbar. Dadurch lässt sich ein Rumpfüberspannungsableiter, also ein Überspannungsableiter ohne Durchführung, vorfertigen und mit unterschiedlichen Durchführungen zu einem Überspannungsableiter montieren, indem bei der Montage die Kontaktelemente an die jeweilige Anordnung der Hochspannungskontakte in der Durchführung eingestellt werden.It is also advantageous that the surge arrester has a plurality of arrester elements and a plurality of high-voltage contacts, the number of arrester elements being equal to that of the high-voltage contacts. The discharge elements are preferably arranged rotationally symmetrically on a first pitch circle around the housing axis. The high voltage contacts are also preferably arranged rotationally symmetrically on a second pitch circle around the housing axis. Each of the diverting elements has an adjustable contact element. The contact elements are set such that their position lies on the second pitch circle. Discharge elements and high-voltage contacts can lie on different sub-circles. With the diameter of the first pitch circle remaining the same, the contact elements can be adjusted to different diameters of the second pitch circle. Thus, the surge arrester can be adjusted with the arrangement of the arrester elements on bushings with a different arrangement of the high-voltage contacts. As a result, a trunk surge arrester, i.e. a surge arrester without bushing, can be prefabricated and assembled with different bushings to form a surge arrester by adjusting the contact elements to the respective arrangement of the high-voltage contacts in the bushing during assembly.

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

Figuren 1 und 2
einen erfindungsgemäßen Überspannungsableiter,
Figur 3
eine weitere Ausführungsform eines erfindungsgemäßen Überspannungsableiters,
Figur 4
eine Schnittdarstellung im Bereich des Hochspannungskontaktes
Figur 5
eine Detaildarstellung einer Verschiebeeinrichtung
The invention is explained in more detail below with reference to the drawings. Show:
Figures 1 and 2
a surge arrester according to the invention,
Figure 3
another embodiment of a surge arrester according to the invention,
Figure 4
a sectional view in the area of the high-voltage contact
Figure 5
a detailed view of a displacement device

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

Die Figuren 1 und 2 zeigen einen Überspannungsableiter 1. In einem fluiddichten Gehäuse 2, bei dem die im Wesentlichen zylindrische Gehäusewand nicht dargestellt ist, sind hier drei Ableitelemente 5 die für den Schutz einer dreiphasigen gasisolierten Schaltanlage vorgesehen sind, in einem Dreieck rotationssymmetrisch um eine Gehäuseachse 50 auf einem ersten Teilkreis 30 angeordnet. Diese Ableitelemente 5 weisen jeweils eine zylindrische Ableitsäule 12, eine hochspannungsseitige Endarmatur 7, eine erdseitige Endarmatur 6 und mehrere Zugelemente 11 auf. Die Ableitsäule 12 ist aus einzelnen, ebenfalls zylindrischen Varistorblöcken zusammengesetzt. Die Endarmaturen 6, 7 bestehen meist aus elektrisch leitendem Material. Die Zugelemente 11 sind in den Endarmaturen 6, 7 unter Zug verpresst und halten so die Ableitsäule 12 zusammen.The Figures 1 and 2nd show a surge arrester 1. In a fluid-tight housing 2, in which the essentially cylindrical housing wall is not shown, here three diverter elements 5, which are provided for the protection of a three-phase gas-insulated switchgear, are rotationally symmetrical in a triangle arranged around a housing axis 50 on a first pitch circle 30. These discharge elements 5 each have a cylindrical discharge column 12, a high-voltage end fitting 7, an earth-side end fitting 6 and a plurality of tension elements 11. The deflection column 12 is composed of individual, also cylindrical varistor blocks. The end fittings 6, 7 mostly consist of electrically conductive material. The tension elements 11 are pressed under tension in the end fittings 6, 7 and thus hold the deflecting column 12 together.

Das Gehäuse 2 ist im Wesentlichen zylinderförmig. Entlang der Zylinderachse erstreckt sich die Gehäuseachse 50, die eine axiale Richtung definiert. Das Ableitelement 5 mit seiner Längsachse 40 parallel zu dieser Gehäuseachse 50 ausgerichtet. An den beiden Deckflächen ist das Gehäuse 2 fluiddicht verschlossen.The housing 2 is essentially cylindrical. The housing axis 50, which defines an axial direction, extends along the cylinder axis. The discharge element 5 is aligned with its longitudinal axis 40 parallel to this housing axis 50. The housing 2 is closed in a fluid-tight manner on the two cover surfaces.

Auf einer Erdanschlussseite des Ableitelementes 5 ist die Deckfläche des Gehäuses 2 mit einem Gehäusedeckel 22 verschlossen. Ein Erdkontakt 3 ist über eine nicht dargestellte erdseitige Durchführung elektrisch isoliert durch den Gehäusedeckel 22 vom Inneren zum Äußeren des Gehäuses 2 geführt und dient dem Erdungsanschluss. Im Inneren des Gehäuses 2 ist dieser Erdkontakt 3 elektrisch leitend mit dem Ableitelement 5 verbunden. Sind im Gehäuse 2 mehrere Ableitelemente 5 angeordnet, ist jedes Ableitelement 5 mit einem eigenen Erdkontakt 3 verbunden. Die erdseitige Endarmatur 6 ist mit einer Isolierscheibe 25 vom Gehäusedeckel 22 beabstandet und an der erdseitigen Durchführung befestigt. Der Gehäusedeckel 22 weist in der Regel einen hier nicht dargestellten Anschluss auf, über den ein Fluid, beispielsweise Schwefelhexafluorid, in das Gehäuse 2 eingefüllt, beziehungsweise abgelassen werden kann. Das Gehäuse 2 kann außerdem weitere Einrichtungen wie eine Wartungsöffnung oder einen Berstschutz aufweisen.The cover surface of the housing 2 is closed with a housing cover 22 on an earth connection side of the diverter element 5. A ground contact 3 is electrically insulated through a housing cover 22, not shown, through the housing cover 22 from the inside to the outside of the housing 2 and is used for the ground connection. In the interior of the housing 2, this earth contact 3 is electrically conductively connected to the discharge element 5. If several conductor elements 5 are arranged in the housing 2, each conductor element 5 is connected to its own earth contact 3. The end fitting 6 on the earth side is spaced from the housing cover 22 by an insulating washer 25 and is fastened to the bushing on the earth side. The housing cover 22 generally has a connection (not shown here) via which a fluid, for example sulfur hexafluoride, can be introduced into or drained from the housing 2. The housing 2 can also have other devices such as a maintenance opening or a burst protection.

Auf einer Hochspannungsanschlussseite des Ableitelementes 5 ist die Deckfläche des Gehäuses 2 mit einer Hochspannungsdurchführung 14 versehen, um das elektrische Hochspannungspotential ohne Gefahr eines Überschlags zwischen Hochspannung und geerdetem Gehäuse 2 von außen in das Gehäuse 2 hinein zu führen. Die Durchführung 14 ist hier als dreipolige Durchführung 14 ausgeführt, die drei gegeneinander und gegen das Gehäuse isolierte Hochspannungskontakte 4 in das Gehäuse 2 hineinführt. Die Hochspannungskontakte 4 sind rotationssymmetrisch um die Gehäuseachse 50 auf einem zweiten Teilkreis 31 angeordnet. Über die Hochspannungskontakte 4 kann der Überspannungsableiter 1 an eine hier nicht dargestellte dreiphasige gasisolierte Schaltanlage angeschlossen werden. Im Inneren des Gehäuses 2 ragen die Hochspannungskontakte 4 in das Gehäuse 2 hinein. Auf der Innenseite des Gehäuses 2 weisen sie ein Sackloch auf, in das ein Kontaktelement 9 einsteckbar ist. Alternativ ist eine Ausführung möglich, in der das Kontaktelement 9 an der Innenseite des Hochspannungskontaktes 4 anliegt.On a high-voltage connection side of the diverting element 5, the top surface of the housing 2 is provided with a high-voltage bushing 14 in order to store the electrical high-voltage potential to lead into the housing 2 from the outside without the risk of a flashover between the high voltage and the grounded housing 2. The bushing 14 is designed here as a three-pole bushing 14 which leads three high-voltage contacts 4 insulated from one another and from the housing into the housing 2. The high-voltage contacts 4 are arranged rotationally symmetrically around the housing axis 50 on a second pitch circle 31. The surge arrester 1 can be connected to a three-phase gas-insulated switchgear (not shown) via the high-voltage contacts 4. Inside the housing 2, the high-voltage contacts 4 protrude into the housing 2. On the inside of the housing 2, they have a blind hole into which a contact element 9 can be inserted. Alternatively, an embodiment is possible in which the contact element 9 rests on the inside of the high-voltage contact 4.

Auf die hochspannungsseitige Endarmatur 7 ist eine haubenartige Exzenterscheibe 60 aufgesteckt und gegebenenfalls mit Madenschrauben gesichert. Die Exzenterscheibe 60 weist dazu auf ihrer Unterseite eine zylindrische Ausnehmung 62 auf, die in Form und Größe der hochspannungsseitigen Endarmatur 7 entspricht. Die außenliegenden Ecken und Kanten der Exzenterscheibe 60 sind abgerundet, um Feldspitzen zu vermeiden. Ist die Exzenterscheibe 60 auf die hochspannungsseitige Endarmatur 7 aufgesteckt, lässt sie sich um eine Mittelachse des Ableitelementes 5 als Drehachse verdrehen. Das Kontaktelement 9 ist auf der Außenseite der Exzenterscheibe 60 beabstandet von der Drehachse angeordnet. Durch eine Verdrehung der Exzenterscheibe 60 wird das Kontaktelement 9 auf einer Kreisbahn um die Längsachse 40 bewegt und kann dadurch radial zur Gehäuseachse 50 verstellt werden. In der gewünschten Position des Kontaktelementes 9 wird die Exzenterscheibe 60 beispielsweise mit Madenschrauben an der Endarmatur 7 fixiert. Somit kann der Überspannungsableiter 1 auf einfache Weise an unterschiedliche Anordnungen der Hochspannungskontakte 4 angepasst werden, ohne dass die Anordnung der Ableitelemente 5 verändert werden müsste.A hood-like eccentric disk 60 is attached to the high-voltage end fitting 7 and, if necessary, secured with grub screws. For this purpose, the eccentric disc 60 has on its underside a cylindrical recess 62 which corresponds in shape and size to the high-voltage end fitting 7. The outer corners and edges of the eccentric disc 60 are rounded in order to avoid field peaks. If the eccentric disc 60 is plugged onto the high-voltage end fitting 7, it can be rotated about a central axis of the diverter element 5 as the axis of rotation. The contact element 9 is arranged on the outside of the eccentric disk 60 at a distance from the axis of rotation. By rotating the eccentric disk 60, the contact element 9 is moved in a circular path about the longitudinal axis 40 and can thereby be adjusted radially to the housing axis 50. In the desired position of the contact element 9, the eccentric disc 60 is fixed to the end fitting 7, for example with grub screws. Thus, the surge arrester 1 can be easily adapted to different arrangements of the high-voltage contacts 4 without the arrangement of the diverter elements 5 having to be changed.

Die Figuren 1 und 2 zeigen Überspannungsableiter 1 mit unterschiedlichen Anordnungen der Hochspannungskontakte 4. In der Figur 2 weisen die Hochspannungskontakte gegenüber denen der Figur 1 einen größeren Abstand von der Gehäuseachse 50, dementsprechend einen größeren Durchmesser des zweiten Teilkreises 31 auf. Die Anordnung der Ableitelemente 5 und damit der Durchmesser des ersten Teilkreises 30 ist in beiden Figuren gleich. Die Exzenterscheiben 60 sind in der Figur 2 gegenüber denen der Figur 1 entsprechend dem größeren Durchmesser des zweiten Teilkreises 31 nach außen verdreht und damit auf die gegenüber der Figur 1 unterschiedliche Anordnung der Hochspannungskontakte 9 eingestellt. Es lassen sich so Durchführungen 14 mit unterschiedlichen Anordnungen der Hochspannungskontakte 9 in den Überspannungsableiter 1 einbauen, ohne dass dies Einfluss auf die Anordnung der Ableitelemente 5 hat.The Figures 1 and 2nd show surge arrester 1 with different arrangements of the high voltage contacts 4. In the Figure 2 have the high voltage contacts compared to those of Figure 1 a larger distance from the housing axis 50, correspondingly a larger diameter of the second pitch circle 31. The arrangement of the diverter elements 5 and thus the diameter of the first pitch circle 30 is the same in both figures. The eccentric discs 60 are in the Figure 2 compared to those of Figure 1 corresponding to the larger diameter of the second pitch circle 31 rotated outwards and thus on the opposite Figure 1 different arrangement of the high-voltage contacts 9 set. Bushings 14 with different arrangements of the high-voltage contacts 9 can thus be installed in the surge arrester 1 without this having any influence on the arrangement of the diverter elements 5.

Eine weitere Ausführungsform ist in der Figur 3 gezeigt. Das Ableitelement 5 weist wie in den Figuren 1 und 2 eine Exzenterscheibe 60 um die Endarmatur 7 auf, an der ein Kontaktelement 9 angeordnet ist. In dem Gehäuse 2 ist ein zweites Ableitelement 70 angeordnet. Das zweite Ableitelement 70 ist mit einer ersten Endarmatur 71 mit dem Hochspannungskontakt 4 verbunden. Ein torusförmiger Schirm 73 um die erste Endarmatur 71 sorgt für eine gleichförmige Feldverteilung. Eine zweite Endarmatur 72 des zweiten Ableitelementes 70 ist in eine Exzenterscheibe 74 eingesteckt. Diese Exzenterscheibe 74 weist anstelle eines Kontaktelementes 9 eine Bohrung auf. Die Längsachse des zweiten Ableitelementes 70 ist mittig mit dem Hochspannungskontakt 4 angeordnet. Die Längsachse des Ableitelementes 5 ist dazu außermittig angeordnet. Die Exzenterscheiben 60 und 74 lassen sich so gegeneinander verdrehen, dass das Kontaktelement 9 in die Bohrung der Exzenterscheibe 74 einsteckbar ist. Auf diese Weise lässt sich das Ableitelement 5 flexibler am Deckel 22 anordnen und muss nicht wie bisher mittig am Deckel 22 angeordnet werden. Hierdurch wird ein größerer Gestaltungsspielraum für die Platzierung weiterer Bauelemente wie beispielsweise der Betätigungseinrichtung 23, Fülleinrichtungen für das Isolierfluid, Überwachungseinrichtungen und Ähnlichen erreicht.Another embodiment is shown in FIG Figure 3 shown. The discharge element 5 has as in the Figures 1 and 2nd an eccentric disc 60 around the end fitting 7, on which a contact element 9 is arranged. A second diverting element 70 is arranged in the housing 2. The second discharge element 70 is connected to the high-voltage contact 4 by a first end fitting 71. A toroidal screen 73 around the first end fitting 71 ensures a uniform field distribution. A second end fitting 72 of the second diverter element 70 is inserted into an eccentric disk 74. This eccentric disk 74 has a bore instead of a contact element 9. The longitudinal axis of the second diverting element 70 is arranged centrally with the high-voltage contact 4. For this purpose, the longitudinal axis of the diverting element 5 is arranged off-center. The eccentric disks 60 and 74 can be rotated relative to one another in such a way that the contact element 9 can be inserted into the bore of the eccentric disk 74. In this way, the diverter element 5 can be arranged more flexibly on the cover 22 and does not have to be arranged centrally on the cover 22 as before. This creates greater scope for placement of additional ones Components such as the actuator 23, filling devices for the insulating fluid, monitoring devices and the like are achieved.

Auf das zweite Ableitelement 70 kann jedoch auch verzichtet und die Exzenterscheibe 74 direkt auf den Hochspannungskontakt 4 aufgesetzt werden. Durch das zweite Ableitelement 70 kann jedoch der Überspannungsableiter leicht auf unterschiedliche Anforderungen angepasst werden. Die Anzahl der benötigten Varistorelemente ist durch die Spezifikation der Schaltanlage unter anderem durch das Spannungsniveau festgelegt. Bisher erforderten unterschiedliche Spezifikationen ein Ableitelement 5 unterschiedlicher Länge. Dadurch musste entweder das Gehäuse 2 an die geforderte Länge des Ableitelements 5 angepasst werden, oder das Ableitelement 5 wurde durch in die Ableitsäule 12 eingesetzte leitende Einlegeteile verlängert, um ein Gehäuse 2 einer bestimmten Größe nutzen zu können. Dadurch, dass die Anzahl der benötigten Varistorelemente auf zwei Ableitelemente 5, 70 aufgeteilt wird, reduziert sich der Fertigungs- und Lagerhaltungsaufwand. Es wird ein Ableitelement 5, dessen Länge der kleinsten vorkommenden Länge entspricht, vorgefertigt. Das zweite Ableitelement 70 wird entweder in den am häufigsten benötigten Längen vorgefertigt, oder bei Bedarf angefertigt. Da das zweite Ableitelement 70 weniger Varistorelemente aufweist, wie das Ableitelement 5, muss nur ein relativ kleines Bauteil in einer gewissen Variantenanzahl gefertigt beziehungsweise vorgehalten werden. Alle anderen Bauelemente wie das Ableitelement 5, das Gehäuse 2 oder gegebenenfalls die Betätigungseinrichtung 23 bleiben bei allen oder zumindest mehreren Varianten gleich und können so wirtschaftlicher hergestellt werden. Das zweite Ableitelement 70 kann auch durch ein zylindrisches leitendes Zwischenstück ersetzt werden, zum Beispiel einen Metallzylinder. Somit kann dieselbe Gehäusegröße verwendet werden, auch wenn neben den im Ableitelement 5 verbauten Varistorelementen keine weiteren Varistorelemente benötigt werden.However, the second diverter element 70 can also be dispensed with and the eccentric disk 74 can be placed directly on the high-voltage contact 4. However, the second arrester 70 can be used to easily adapt the surge arrester to different requirements. The number of varistor elements required is determined by the switchgear specification, including the voltage level. Previously, different specifications required a diverting element 5 of different lengths. As a result, either the housing 2 had to be adapted to the required length of the diverter element 5, or the diverter element 5 was extended by conductive inserts inserted into the diverter column 12 in order to be able to use a housing 2 of a certain size. The fact that the number of varistor elements required is divided into two diverting elements 5, 70 reduces the outlay in terms of production and storage. A diverter element 5, the length of which corresponds to the smallest occurring length, is prefabricated. The second diverter element 70 is either prefabricated in the most frequently required lengths, or is manufactured as required. Since the second diverter element 70 has fewer varistor elements than the diverter element 5, only a relatively small component in a certain number of variants has to be manufactured or kept available. All other components such as the diverting element 5, the housing 2 or, if appropriate, the actuating device 23 remain the same in all or at least several variants and can thus be produced more economically. The second diverting element 70 can also be replaced by a cylindrical conductive intermediate piece, for example a metal cylinder. The same housing size can thus be used, even if no further varistor elements are required in addition to the varistor elements installed in the diverting element 5.

Die Figuren 1, 2 und 3 zeigen außerdem eine optionale Trennvorrichtung aus einer Trennstelle 10 und einer Verschiebeeinrichtung 8 für das Kontaktelement 9. Die Trennstelle 10 kann mit einem Kontaktelement 9 geschlossen werden.The Figures 1 , 2nd and 3rd also show an optional separation device comprising a separation point 10 and a displacement device 8 for the contact element 9. The separation point 10 can be closed with a contact element 9.

Wie in Figur 4 gezeigt, ist das Kontaktelement 9 als Stift oder Hülse zylindrisch ausgeführt, und kann in einer Führungsbohrung 26 der Exzenterscheibe 60 in axialer Richtung bewegt werden. Führungsbohrung 26 und das Kontaktelement 9 sind dabei so aufeinander abgestimmt, dass sowohl eine mechanische Führung, als auch eine gute elektrische Verbindung zwischen Kontaktelement 9 und Exzenterscheibe 60 besteht. Alternativ können Schleif- oder Gleitkontakte wie die ringförmig in das Kontaktelement 9 eingesetzten Kontaktlammellen 61 die elektrische Verbindung herstellen. Wird das Kontaktelement 9 zum Hochspannungskontakt 4 bewegt, so wird die Trennstelle 10 geschlossen. Es besteht dann eine elektrische Verbindung von der Schaltanlage über den Hochspannungskontakt 4 ins Innere des Gehäuses 2, über das Kontaktelement 9, die Exzenterscheibe 60, die hochspannungsseitige Endarmatur 7, die Ableitsäule 12, die erdseitige Endarmatur 6 schließlich zum geerdeten Erdkontakt 3. Wird das Kontaktelement 9 vom Hochspannungskontakt 4 weg bewegt, so wird die Trennstelle 10 geöffnet und das Ableitelement 5 hat keine elektrische Verbindung mehr zum Hochspannungskontakt 4 und damit zur Schaltanlage. Die Exzenterscheibe 60 liegt haubenartig auf der hochspannungsseitigen Endarmatur 7 auf. Die Exzenterscheibe weist dazu eine zylindrische Ausnehmung 62 auf, in die die Endarmatur 7 eingesteckt ist. Die Exzenterscheibe lässt sich so um die Längsachse 40 drehen. Das in die Führungsbohrung 26 eingesteckte Kontaktelement 9 rotiert dann um das Ableitelement 5. Die Endarmatur 7 ist vollständig in die Ausnehmung 62 eingesteckt. Die außenliegenden Kanten der Exzenterscheibe 60 sind abgerundet, um Feldspitzen zu vermeiden. Die Exzenterscheibe 60 sorgt so gleichzeitig für eine Abschirmung der Endarmatur 7. Die Verbindung zwischen Kontaktelement 9 und Hochspannungskontakt 4 ist hier als Steckkontakt ausgeführt. Das Kontaktelement ist in eine Kontaktbohrung 63 des Hochspannungskontaktes 4 eingesteckt. Auch hier sorgen Kontaktlamellen 61 für einen guten mechanischen und elektrischen Kontakt zwischen Kontaktelement 9 und Hochspannungskontakt 4.As in Figure 4 shown, the contact element 9 is cylindrical as a pin or sleeve, and can be moved in a guide bore 26 of the eccentric 60 in the axial direction. The guide bore 26 and the contact element 9 are matched to one another in such a way that there is both mechanical guidance and a good electrical connection between the contact element 9 and the eccentric disk 60. Alternatively, sliding or sliding contacts such as the contact lamella 61 inserted in a ring in the contact element 9 can establish the electrical connection. If the contact element 9 is moved to the high-voltage contact 4, the disconnection point 10 is closed. There is then an electrical connection from the switchgear via the high-voltage contact 4 into the interior of the housing 2, via the contact element 9, the eccentric disk 60, the high-voltage end fitting 7, the discharge column 12, the earth-side end fitting 6, finally to the earthed earth contact 3. The contact element 9 moved away from the high-voltage contact 4, the disconnection point 10 is opened and the diverter element 5 no longer has an electrical connection to the high-voltage contact 4 and thus to the switchgear. The eccentric disc 60 rests on the high-voltage end fitting 7 like a hood. For this purpose, the eccentric disc has a cylindrical recess 62, into which the end fitting 7 is inserted. The eccentric disk can thus be rotated about the longitudinal axis 40. The contact element 9 inserted into the guide bore 26 then rotates around the diverter element 5. The end fitting 7 is completely inserted into the recess 62. The outer edges of the eccentric disk 60 are rounded in order to avoid field peaks. The eccentric disc 60 thus simultaneously shields the end fitting 7. The connection between the contact element 9 and the high-voltage contact 4 is designed here as a plug contact. The contact element is in a contact bore 63 of the high-voltage contact 4 inserted. Here too, contact blades 61 ensure good mechanical and electrical contact between contact element 9 and high-voltage contact 4.

Die Bewegung des Kontaktelementes 9 geschieht mittels einer Verschiebeeinrichtung 8, die in der Figur 5 gezeigt ist. Diese weist eine Betätigungseinrichtung 23, eine Zentralstange 16, ein Koppelelement 17 und Schubstangen 15 auf. Die außerhalb des Gehäuses 2 liegende Betätigungseinrichtung 23 ist mit der Zentralstange 16 verbunden, die gasdicht in das Gehäuse 2 geführt ist. Auf der Zentralstange 16 ist im Inneren des Gehäuses 2 das Koppelelement 17 angeordnet. Zentralstange 16 und Koppelelement 17 bilden dabei einen Gewindeantrieb, indem die Zentralstange 16 ein Außengewinde und das Koppelelement 17 ein entsprechendes Innengewinde, beispielsweise ein Trapezgewinde aufweist. An dem Koppelelement 17 ist je Ableitelement 5 ein radial nach außen zeigender Arm 19 angeordnet, an dessen äußerem Ende ein Verbindungselement 20 zur Aufnahme der Schubstangen 15 angeordnet ist. Die Schubstangen 15 sind mit einem Ende in diesem Verbindungselement 20 festgelegt und mit dem anderen Ende mit dem Kontaktelement 9 verbunden, beispielsweise verschraubt oder verklebt. Am Deckel 22 ist ein Führungsstab 28 befestigt, beispielsweise wie hier gezeigt verschraubt. Der Führungsstab 28 ragt parallel zur Gehäuseachse 50 in das Gehäuse 2 hinein. Das andere Ende ist in eine Bohrung des Verbindungselements 20 gesteckt. Das Verbindungselement kann so an dem Führungsstab 28 auf- und abgleiten und ist dadurch in der Längsrichtung geführt. Wird die Betätigungseinrichtung 23 gedreht, so dreht sich die Zentralstange 16 im Inneren des Gehäuses 2 und überträgt die rotierende Bewegung der Betätigungseinrichtung 23 mittels des Koppelelementes 17, der Arme 19 und der Verbindungselemente 20 auf die Schubstangen 15 und damit auf die Kontaktelemente 9. Je nach Bewegungsrichtung wird dabei die Trennstelle 10 geöffnet oder geschlossen.The movement of the contact element 9 takes place by means of a displacement device 8, which in the Figure 5 is shown. This has an actuating device 23, a central rod 16, a coupling element 17 and push rods 15. The actuating device 23 lying outside the housing 2 is connected to the central rod 16, which is guided into the housing 2 in a gas-tight manner. The coupling element 17 is arranged on the central rod 16 in the interior of the housing 2. Central rod 16 and coupling element 17 form a threaded drive in that central rod 16 has an external thread and coupling element 17 has a corresponding internal thread, for example a trapezoidal thread. On the coupling element 17, a radially outwardly pointing arm 19 is arranged for each diverter element 5, on the outer end of which a connecting element 20 is arranged for receiving the push rods 15. The push rods 15 are fixed at one end in this connecting element 20 and connected at the other end to the contact element 9, for example screwed or glued. A guide rod 28 is fastened to the cover 22, for example screwed as shown here. The guide rod 28 projects into the housing 2 parallel to the housing axis 50. The other end is inserted into a hole in the connecting element 20. The connecting element can slide up and down on the guide rod 28 and is thereby guided in the longitudinal direction. If the actuating device 23 is rotated, the central rod 16 rotates inside the housing 2 and transmits the rotating movement of the actuating device 23 by means of the coupling element 17, the arms 19 and the connecting elements 20 to the push rods 15 and thus to the contact elements 9. Depending on The separation point 10 is opened or closed in the direction of movement.

Die Bohrungen für den Führungsstab 28 und die Schubstange 15 sind in dem Verbindungselement 20 so angeordnet, dass sie vertauscht werden können, indem das Verbindungselement 20 um 180° um den Arm 19 gedreht wird. Bei gleichbleibender Position des Führungsstabes 28 ergibt sich dadurch eine andere Position der Schubstange 15. Somit lässt sich die Exzenterscheibe 60 auf zwei Positionen einstellen, indem lediglich das Verbindungselement 20 verdreht wird. Durch Austausch des Verbindungselementes 20 lassen sich weitere Positionen der Exzenterscheibe 60 einstellen.The holes for the guide rod 28 and the push rod 15 are arranged in the connecting element 20 so that they can be exchanged by rotating the connecting element 20 through 180 ° around the arm 19. With the position of the guide rod 28 remaining the same, this results in a different position of the push rod 15. Thus, the eccentric disc 60 can be set to two positions by merely rotating the connecting element 20. By exchanging the connecting element 20, further positions of the eccentric disk 60 can be set.

Claims (8)

  1. Surge arrester (1) comprising
    - a fluid-tight housing (2),
    - an arresting element (5) having a longitudinal axis (40), said arresting element being arranged in the fluid-tight housing (2) wherein the housing (2) is embodied in substantially cylindrical fashion, and wherein a housing axis (50) extends along a cylinder axis in the longitudinal direction,
    - a high-voltage contact (4), which electrically connects the interior to the exterior of the housing (2), and
    - a contact element (9), via which an electrical connection from the arresting element (5) to the high-voltage contact (4) is producible,
    wherein
    the arresting element (5) is oriented with its longitudinal axis (40) parallel to the housing axis (50), and
    the contact element (9) is arranged eccentrically with respect to the longitudinal axis (40) and it is possible to set a position of the contact element (9) in a plane perpendicular to the longitudinal axis (40),
    characterized in that
    the contact element (9) is connected to the arresting element (5) by an eccentric disc (60), which is rotatable about the longitudinal axis (40).
  2. Surge arrester (1) according to Claim 1,
    characterized in that
    the eccentric disc (60) has a cylindrical cutout (62) concentrically with respect to the longitudinal axis (40), into which cutout an end fitting (7) of the arresting element (5) is insertable in such a way that the eccentric disc (60) is rotatable about the end fitting (7).
  3. Surge arrester (1) according to either of Claims 1 and 2,
    characterized in that
    the contact element (9) is displaceable parallel to the longitudinal axis (40) by means of a displacement device (8) for producing or disconnecting an electrical connection between arresting element (5) and high-voltage contact (4).
  4. Surge arrester (1) according to Claim 3,
    characterized in that
    the displacement device (8) comprises a push rod (15) connected to the contact element (9), and a central rod (16), which is led from the interior of the housing (2) towards the outside in a gas-tight manner and is movable by an actuation device (23) outside the housing (2), wherein a coupling element (17) is connected to the central rod (16) and to the push rod (15) for the purpose of transmitting a movement of the actuation device (23) to the contact element (9), and wherein the coupling element (17) is connected to the push rod (15) by means of a connection element (20).
  5. Surge arrester (1) according to Claim 4,
    characterized in that
    the coupling element (17) comprises an arm (19), which is inserted into a hole in the connection element (20), wherein a guide bar (28) engages into a groove of the arm (19) in such a way that the connection element (20) is fixed in a direction perpendicular to the longitudinal axis (40).
  6. Surge arrester (1) according to any of Claims 1 to 5,
    characterized by
    an intermediate piece (70) arranged in the housing (2) and having a first end fitting (71), which is connected to the high-voltage contact (4) concentrically with respect to the longitudinal axis (40), and having a second end fitting (72), which is inserted into a second eccentric disc (74), wherein the contact element (9) is inserted into a second guide hole (26) in the second eccentric disc (74).
  7. Surge arrester (1) according to Claim 6,
    characterized in that
    the intermediate piece (70) comprises a second arresting element.
  8. Surge arrester (1) according to any of Claims 1 to 7,
    characterized by a plurality of arresting elements (5) arranged on a first pitch circle (30) around the housing axis (50) and each having a settable contact element (9) and a plurality of high-voltage contacts (4) arranged on a second pitch circle (31) around the housing axis (50), wherein the contact elements (9) are set in such a way that their position lies on the second pitch circle (31).
EP13186634.5A 2013-09-30 2013-09-30 Surge arrester Active EP2854141B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DK13186634.5T DK2854141T3 (en) 2013-09-30 2013-09-30 An arrester
EP13186634.5A EP2854141B1 (en) 2013-09-30 2013-09-30 Surge arrester
PL13186634T PL2854141T3 (en) 2013-09-30 2013-09-30 Surge arrester
KR1020167008009A KR101955078B1 (en) 2013-09-30 2014-09-25 Surge arrester
JP2016544754A JP6279088B2 (en) 2013-09-30 2014-09-25 Surge arrester
PCT/EP2014/070482 WO2015044265A1 (en) 2013-09-30 2014-09-25 Surge arrester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13186634.5A EP2854141B1 (en) 2013-09-30 2013-09-30 Surge arrester

Publications (2)

Publication Number Publication Date
EP2854141A1 EP2854141A1 (en) 2015-04-01
EP2854141B1 true EP2854141B1 (en) 2020-03-25

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EP13186634.5A Active EP2854141B1 (en) 2013-09-30 2013-09-30 Surge arrester

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EP (1) EP2854141B1 (en)
JP (1) JP6279088B2 (en)
KR (1) KR101955078B1 (en)
DK (1) DK2854141T3 (en)
PL (1) PL2854141T3 (en)
WO (1) WO2015044265A1 (en)

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Publication number Priority date Publication date Assignee Title
EP3131098B1 (en) * 2015-08-12 2018-02-28 Siemens Aktiengesellschaft Enclosed surge voltage protector
DE102016206580A1 (en) * 2016-04-19 2017-11-02 Siemens Aktiengesellschaft Arrangement for overvoltage protection of an electrical system insulated with an insulating liquid
JP6595428B2 (en) * 2016-09-16 2019-10-23 株式会社東芝 Lightning arrestor
CN113451980A (en) * 2021-08-16 2021-09-28 西门子能源国际公司 Lightning arrester

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Publication number Priority date Publication date Assignee Title
US3912965A (en) * 1970-12-14 1975-10-14 Naoya Yamada Spark gap device for lightning arrester
JPS5947435B2 (en) * 1974-12-25 1984-11-19 三菱電機株式会社 Lightning arrester
JPS5915442Y2 (en) * 1978-03-18 1984-05-08 三菱電機株式会社 Lightning arrester
JPH0427101A (en) * 1990-05-22 1992-01-30 Ngk Insulators Ltd Lightning element
JPH0412604U (en) * 1990-05-24 1992-01-31
JP2744149B2 (en) * 1991-07-04 1998-04-28 株式会社東芝 Surge arrester
JP3849165B2 (en) * 1996-02-23 2006-11-22 株式会社明電舎 Lightning protection device
JPH10322822A (en) * 1997-05-16 1998-12-04 Toshiba Corp Lightning arrestor for gas insulated switchgear
DE102006052955B4 (en) * 2006-09-07 2020-07-02 Dehn Se + Co Kg Surge arrester with a housing and with at least one arrester element
ES2538819T3 (en) 2009-07-30 2015-06-24 F. Hoffmann-La Roche Ag Enzymatic antibody processing
DE102009053145A1 (en) * 2009-11-05 2011-05-12 Phoenix Contact Gmbh & Co. Kg Overvoltage protection device, has thermal expandable material arranged within housing such that pole of varistor does not stay in electrically conductive contact with connection elements
EP2466596B1 (en) * 2010-12-16 2013-08-28 ABB Research Ltd. Component with excess voltage protection and method for testing same
DE102011077394A1 (en) 2011-06-10 2012-12-13 Siemens Aktiengesellschaft Surge arresters
DE102012217310A1 (en) 2012-09-25 2014-03-27 Siemens Aktiengesellschaft Surge arresters

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Publication number Publication date
KR101955078B1 (en) 2019-03-06
DK2854141T3 (en) 2020-06-02
WO2015044265A1 (en) 2015-04-02
KR20160046905A (en) 2016-04-29
JP6279088B2 (en) 2018-02-14
JP2016537826A (en) 2016-12-01
PL2854141T3 (en) 2020-08-24
EP2854141A1 (en) 2015-04-01

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