EP2600358B1 - Surge absorber - Google Patents
Surge absorber Download PDFInfo
- Publication number
- EP2600358B1 EP2600358B1 EP11191743.1A EP11191743A EP2600358B1 EP 2600358 B1 EP2600358 B1 EP 2600358B1 EP 11191743 A EP11191743 A EP 11191743A EP 2600358 B1 EP2600358 B1 EP 2600358B1
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- EP
- European Patent Office
- Prior art keywords
- cable
- housing
- plug
- surge arrester
- arrester according
- 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.)
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- 239000006096 absorbing agent Substances 0.000 title 1
- 239000004020 conductor Substances 0.000 claims description 24
- 238000013016 damping Methods 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 14
- 239000012212 insulator Substances 0.000 claims description 13
- 238000005538 encapsulation Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 6
- 241000722921 Tulipa gesneriana Species 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 3
- 230000010355 oscillation Effects 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 230000005684 electric field Effects 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Images
Classifications
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- 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
-
- 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
- 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
- H01C7/123—Arrangements for improving potential distribution
Definitions
- the present invention relates to a surge arrester having a contact-protected housing and a voltage-limiting active part arranged in the housing according to claim 1.
- a contact-protected surge arrester For applications in the voltage range up to 44 kV, such a contact-protected surge arrester is generally designed as a plug-in conductor. He can then be connected by means of a standardized connector to a protected against overvoltage, touch-protected high voltage system, such as a gas-insulated switchgear or a transformer. For systems that are operated in a higher voltage range, standardized power connections, which are designed in particular as a plug connection, are generally not available.
- Embodiments of the contact-protected surge arrester of the aforementioned type are in EP 1 083 579 B1 .
- the surge arresters described each have an insulation-filled, touch-protected housing, in which a voltage-limiting active part is arranged, which has a column formed as a stack of varistor elements.
- the active part is connected through the wall of the housing with a formed as a plug-in part of a plug connection power connector.
- This power connection is located outside of the insulating agent-filled housing and can therefore be connected to form the plug-in connection with the male part of a likewise contact-protected high-voltage system.
- CN 201859724 U describes a plug-in surge arrester with a Ableiter mor, which is connected via a shielded, flexible cable with a designed as a plug-in power connector.
- the plug contact is part of a plug-in part with a tapered away from the Ableiter Congress Insulating.
- the arrester body can be positioned practically anywhere in a small mounting space and then the male part can be fixed by means of a tensioning device with bias in a plug connection.
- the object is to provide a surge arrester of the type mentioned, which is characterized despite a small footprint by a high level of reliability.
- a surge arrester is provided with a contact-protected housing, a voltage-limiting active part arranged in the housing, which has a stack of varistor elements in the form of a varistor column, and a power connection arranged outside the housing and electrically connected to the varistor column for connecting to an overvoltage to be protected, touch-protected high voltage system.
- the electrically conductive connection between the varistor column and the power connector is designed as a cable conductor of a flexible high-voltage cable.
- the high-voltage cable has two cable sections, of which a first section arranged inside the housing is designed to be shield-free, and a second cable section arranged outside the housing has an electrically conductive shield surrounding the cable conductor and a cable insulation, which on the one hand is connected to the housing and on the other hand with a touch-protected encapsulation of the high voltage system is electrically connected.
- the housing accommodates a device for damping vibrations introduced from outside into the varistor column.
- the power supply to the active part and thus also with respect to the housing of the arrester can be positioned virtually arbitrarily. It can therefore be set up in a space-saving manner and fixed mechanically in the vicinity of a stationary high-voltage system at a freely selectable location.
- the power connection of the now stationary surge arrester can be electrically connected to the high voltage system. It can be saved so space.
- the damping device has a damping body embedding the varistor column of at least one incompressible, rubber-like deformable material. If the damping body has an insulator, an otherwise required insulating means can be saved between the active part and the housing. At the same time can then be reliably controlled by applying a held on the electrical potential of the housing electrically conductive layer on the surface of the insulator acting upon operation of the arrester inside its housing strong electric field, which further increases the reliability of the arrester.
- an annularly designed first field control element can be guided at least around the shield-free first cable section or the varistor column.
- this field control element contains a material formed by a polymeric matrix and a filler embedded in the matrix, which when loaded with a DC electric field or an alternating electric field of up to 100 Hz has at least a dielectric constant between 5 and 45 or a non-linear current. Has voltage characteristic. To improve the damping behavior and thus to further improve the reliability of the material of the first field control element is incompressible and elastically deformable.
- the first field control element may be routed around the varistor column and held at the potential of the cable conductor embedded in the cable insulation.
- a second field control element can be provided, which is guided around the first cable section and held at the potential of the housing.
- the first field control element can also be guided around the first cable section and held at the potential of the housing.
- a plug-in connection arranged in the housing with a first plug contact electrically connected to the cable conductor of the first cable section and a second plug contact electrically connected to a connection fitting of the active part.
- the first or the second plug contact contains a contact tulip with at least one spiral contact.
- the height of the varistor column can also be used for surge arresters which are high Nominal voltages are dimensioned, kept small. As a result, the mechanical strength of the column at a given nominal voltage and, accordingly, the reliability of the arrester is improved.
- the high voltage cable may have a third portion of the high voltage cable that is guidable by the encapsulation in the insulator filled interior of the high voltage system, and the power connector may be attached to a free end of the third cable section and formed as a connection for a power connection provided in the high voltage system isolation means be.
- the power connector may be formed as a plug contact, the plug contact may be part of a held on the potential of the housing, Be protected contact plug part of a cable connector with the high voltage system, the male part may have an elastically deformable insulating part, and in the insulating a held on the potential of the housing third field control can be embedded, the ring around a feasible in the enclosure of the high voltage system, shielding trained third section the high-voltage cable is guided.
- the in Fig.1 illustrated surge arrester has a longitudinal axis A aligned, predominantly cylindrical housing 10.
- the housing is designed to be protected against contact and consists of metal, such as aluminum, an electrically conductive plastic, for example, a polyethylene filled with conductivity soot, or an insulating material, which is coated with electrically conductive material, such as a metal or an electrically conductive plastic.
- the housing is shown only schematically and has a Jacket tube 11, at the lower end of a bottom 12 and at the upper end of a lid 13 is attached.
- the active part 20 contains a column 21 formed as a stack of varistor elements, such as on the basis of metal oxide, in particular ZnO, and the active part 20 upwards resp. down final metal fitting 22 resp. 23 and a tensioning device, not shown, which clamps the two metal fittings and thus also the individual varistor elements with the formation of contact force to the varistor column 21.
- the metal fitting 23 can be connected to earth potential via a current conductor 24, which is optionally insulated from the housing 10.
- the metal fitting 22 is arranged via a plug connection 40 with a cable conductor 35 of a flexible high-voltage cable 30, which is guided through a designated by the cover 13 wall portion of the housing 10 to the outside, with an outside of the housing, in the FIGS. 2 and 3 shown power connector 31 electrically connected.
- the high voltage cable 30 has a led out of the housing 10, shielded with a cable shield 34 cable portion 32 and disposed in the interior of the housing 10 cable portion 33.
- the shield 34 generally comprises an elastically deformable metal sheath and a cable cored layer applied to a cable insulation 36 embedding the cable conductor 35.
- the shield 34 is electrically connected to the housing 10 held at ground potential.
- the connection is achieved by a flange 14 which is arranged centrally on the cover 13 and through which the high-voltage cable 30 is guided in a gastight manner into the interior of the housing 10. It is a contact protection of the outside of the housing arranged, shielded cable section 32 is achieved.
- the section 33 is kept free of the shield 34 and consists essentially of the cable conductor 35 and a cable conductor enveloping the cable insulation 36.
- the lower end of the cable conductor 35 is electrically conductively mounted in a formed as a contact pin 41 of the connector 40.
- An integrated into the connection fitting 22 Plug part 42 is formed as a contact tulip and has a contact pin contacting the spiral contact 43 of a wound in the manner of a Kreistorus spring wire.
- a field control element 25 is also arranged, which controls the electric field acting between the varistor column 21 and the jacket tube 11 located at earth potential during operation of the arrester.
- the field control element is electrically connected to the metal fitting 22 and is therefore at the electrical potential of the cable conductor 35. It is formed substantially axially symmetrical and is guided around the annular Varistorcicle 21.
- further metal electrodes which are kept electrically insulated relative to this electrode. containing electrically conductive plastic layers, which are guided in a substantially coaxial arrangement around this electrode. This field control shields during operation of the arrester varistor elements, which are exposed to a particularly strong electric field.
- the control of the electric field between the unshielded portion 33 of the high voltage cable 30 and the housing 10 is achieved with an annular field control element 37 held at the electrical potential of the housing 10.
- This field control element is electrically conductively connected to the cover 13 and therefore, like the housing 10, is generally at earth potential.
- the field control element 37 may be constructed like the field control element 24 and is guided around the unshielded cable section 33 substantially axially symmetrical.
- the power connector 31 is the electrical connection to be protected from overvoltage and generally stationary high-voltage system 50 with a touch-protected enclosure 51, which is filled at least with a gaseous, liquid or solid insulating 52, such as a gas-insulated encapsulated switchgear or a insulator-filled apparatus, such as a transformer filled with insulating oil. If a high voltage applied to the high-voltage system 50 exceeds a defined value, then the active part 20 limits the applied voltage to this value. In a the Power connection 31, the cable conductor 35, the active part 20 and the current conductor 24 containing circuit then flows a leakage current to ground.
- a gaseous, liquid or solid insulating 52 such as a gas-insulated encapsulated switchgear or a insulator-filled apparatus, such as a transformer filled with insulating oil.
- the power connection 31 arranged at the free end of the shielding-free cable section 33 can be designed as a connection part for a current connection arranged in the interior of the insulation-filled enclosure 51, ie in the insulation means 52.
- a power connection is realized with advantage in the manufacture of the high-voltage system 50, for example by means of a screw which fixes the electrical connection 31 led to the interior of the enclosure 51 at a power connection of an active part of the high-voltage system 50, not shown.
- the shielded portion 32 of the high-voltage cable is guided in a gastight manner into the interior of the encapsulation 51 and held by means of a flange 53 arranged on the encapsulation 51.
- a field control element 38 held on the electrical potential of the cable shielding 34 as well as the encapsulation 51 electrically connected thereto serves to control the electric field acting inside the encapsulation 51 between a section 39 of the high-voltage cable 30 and the encapsulation 51 held free by the shielding 34.
- Such a connection can be made with relatively simple means and is characterized by a high level of reliability.
- the power connection 31 arranged at the free end of the shielding-free cable section 33 can also be integrated in one of two plug-in parts 61, 62 of a cable plug connection 60.
- the dashed lines shown power connector 31 is formed as a contact pin and is part of the male plug portion 61.
- This male part has an elastically deformable insulating 63, which the high-voltage insulation between the plug contact 31 and the shield 34 of the cable section 32, respectively. the encapsulation 50 ensures.
- annular field control element 38 is embedded.
- the plug connection part 61 containing the power connection 31 with the power connection 31 in the form of a plug contact is preceded by a not designated opening of the electrically conductive, grounded enclosure 51 of the high voltage system 50 in the apparent designed as a plug socket 62 out.
- This male part has a designed as a tulip plug contact 64 and an insulating member 65.
- the two insulating parts 63, 65 so strongly elastically deformed on conical bearing surfaces, that therebetween in a dielectrically advantageous manner no air gap remains.
- the plug connection can also have an outer cone.
- a particular advantage of the connector 60 is that voltage tests of the high-voltage system can be performed in a simple manner on site. After removal of the male member 61, a test voltage can be applied to the male member 62 and then easily performed various voltage tests.
- the surge arrester When installing the surge arrester in the high voltage system 50, the surge arrester is first mechanically fixed at a suitable location and then the power connector 31 is electrically connected to a conductor of the high voltage system 50. Since the power connection by elastic deformation of the high voltage cable 30 relative to the housing 10 is virtually arbitrarily positioned, the arrester can be placed in the vicinity of the generally stationary high-voltage system at a freely selectable place in a space-saving manner and mechanically fixed.
- This damper device includes a damper body 71 embedding the varistor column 21 of at least one incompressible, rubber-like deformable material.
- the damping body 71 has an insulator 72 which fills most of the housing 10.
- This insulator contains an elastomer optionally filled with one or more additives, such as typically silicone or EPDM.
- the insulator 72 embeds the active part 20 and isolates it from the Housing 10 electrically.
- the field control elements 25 and 37 are embedded in the insulator 72.
- Particularly good damping is achieved when the generally metal-shaped field control elements are formed from an incompressible rubbery material containing a polymeric matrix and a filler embedded in the matrix, and when loaded with a DC electric field or alternating electric field up to 100 Hz has at least one dielectric constant between 5 and 45 or a non-linear current-voltage characteristic.
- Suitable fillers are typically conductivity black, titanates such as barium titanate, or microvaristors such as metal oxide doped and sintered zinc oxide.
- the breaking load of the varistor column 21 increases considerably with increasing column length, the forces emanating from the high-voltage system 50 or otherwise generated are attenuated particularly effectively in surge arresters, which have a comparatively high varistor column 21 and are dimensioned for voltages higher than 44 kV, preferably higher than 100 kV are. Because at least one of the varistor elements of the varistor column 21 is a so-called high-field element, which has a residual voltage of at least 450 V / mm when subjected to a surge current of 10 kA of the waveform 8/20 ⁇ s, the varistor column 21 is additionally shortened and thus further increases the operational safety of the arrester.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Emergency Protection Circuit Devices (AREA)
- Thermistors And Varistors (AREA)
Description
Die vorliegende Erfindung bezieht sich auf einen Überspannungsableiter mit einem berührungsgeschützten Gehäuse und einem im Gehäuse angeordneten spannungsbegrenzenden Aktivteil nach Patentanspruch 1.The present invention relates to a surge arrester having a contact-protected housing and a voltage-limiting active part arranged in the housing according to claim 1.
Für Anwendungen im Spannungsbereich bis zu 44 kV ist ein solcher berührungsgeschützter Überspannungsableiter im allgemeinen als Steckableiter ausgeführt. Er kann dann mit Hilfe einer standardisierten Steckverbindung an eine vor Überspannung zu schützende, berührungsgeschützte Hochspannungsanlage, beispielsweise eine gasisolierte Schaltanlage oder einen Transformator, angeschlossen werden. Für Anlagen, die in einem höheren Spannungsbereich betrieben werden, sind standardisierte Stromverbindungen, die insbesondere als Steckverbindung ausgeführt sind, im allgemeinen nicht verfügbar.For applications in the voltage range up to 44 kV, such a contact-protected surge arrester is generally designed as a plug-in conductor. He can then be connected by means of a standardized connector to a protected against overvoltage, touch-protected high voltage system, such as a gas-insulated switchgear or a transformer. For systems that are operated in a higher voltage range, standardized power connections, which are designed in particular as a plug connection, are generally not available.
Ausführungsformen des berührungsgeschützten Überspannungsableiters der vorgenannten Art sind in
Der Erfindung, wie sie in Patentanspruche 1 angegeben ist, liegt die Aufgabe zugrunde, einen Überspannungsableiter der eingangs genannten Art zu schaffen, der sich trotz geringen Platzbedarfs durch eine grosse Betriebssicherheit auszeichnet.The invention, as indicated in claims 1, the object is to provide a surge arrester of the type mentioned, which is characterized despite a small footprint by a high level of reliability.
Gemäss der vorliegenden Erfindung wird ein Überspannungsableiter bereitgestellt mit einem berührungsgeschützten Gehäuse, einem im Gehäuse angeordneten spannungsbegrenzenden Aktivteil, das einen als Varistorsäule ausgebildeten Stapel von Varistorelementen aufweist, und mit einem ausserhalb des Gehäuses angeordneten und mit der Varistorsäule elektrisch leitend verbundenen Stromanschluss zum Anschliessen einer vor Überspannung zu schützenden, berührungsgeschützten Hochspannungsanlage. Die elektrisch leitende Verbindung zwischen der Varistorsäule und dem Stromanschluss ist als Kabelleiter eines flexiblen Hochspannungskabels ausgeführt. Das Hochspannungskabel weist zwei Kabelabschnitte auf, von denen ein im Inneren des Gehäuses angeordneter erster Abschnitt abschirmungsfrei ausgebildet ist, und ein ausserhalb des Gehäuses angeordneter zweiter Kabelabschnitt eine den Kabelleiter und eine Kabelisolation umgebende elektrisch leitende Abschirmung aufweist, welche zum einen mit dem Gehäuse und zum anderen mit einer berührungsgeschützten Kapselung der Hochspannungsanlage elektrisch leitend verbindbar ist. Das Gehäuse nimmt eine Vorrichtung auf zum Dämpfen von Schwingungen, die von aussen in die Varistorsäule eingeleitet werden.According to the present invention, a surge arrester is provided with a contact-protected housing, a voltage-limiting active part arranged in the housing, which has a stack of varistor elements in the form of a varistor column, and a power connection arranged outside the housing and electrically connected to the varistor column for connecting to an overvoltage to be protected, touch-protected high voltage system. The electrically conductive connection between the varistor column and the power connector is designed as a cable conductor of a flexible high-voltage cable. The high-voltage cable has two cable sections, of which a first section arranged inside the housing is designed to be shield-free, and a second cable section arranged outside the housing has an electrically conductive shield surrounding the cable conductor and a cable insulation, which on the one hand is connected to the housing and on the other hand with a touch-protected encapsulation of the high voltage system is electrically connected. The housing accommodates a device for damping vibrations introduced from outside into the varistor column.
Beim Überspannungsableiter nach der Erfindung kann der Stromanschluss gegenüber dem Aktivteil und damit auch gegenüber dem Gehäuse des Ableiters praktisch beliebig positioniert werden. Er kann daher in der Nähe einer stationären Hochspannungsanlage an einem frei wählbaren Ort in platzsparender Weise aufgestellt und mechanisch festgesetzt werden. Durch geeignetes Positionieren des Stromanschlusses infolge einer reversiblen Verformung des Hochspannungskabels kann der Stromanschluss des nun stationären Überspannungsableiters elektrisch leitend mit der Hochspannungsanlage verbunden werden. Es kann so Platz eingespart werden. Ausserhalb des Überspannungsableiters, etwa in der Hochspannungsanlage erzeugte Stösse oder Schwingungen, die als Biegekraft oder Schwingung den Überspannungsableiter mechanisch unzulässig stark belasten könnten, werden durch das Zusammenwirken des flexiblen Hochspannungskabels und der Dämpfungsvorrichtung an der die bruchgefährdeten keramischen Varistorelemente enthaltenden Varistorsäule wirksam reduziert und gegebenenfalls fast vollständig unterdrückt. Da die Dämpfungsvorrichtung zudem von aussen direkt ins Gehäuse eingeleitete Kräfte, die etwa durch mechanische Beanspruchung des Gehäuses oder durch Erdbeben erzeugt werden, wirksam dämpft, erhöht sich so die Betriebssicherheit des Überspannungsableiters wesentlich.When surge arrester according to the invention, the power supply to the active part and thus also with respect to the housing of the arrester can be positioned virtually arbitrarily. It can therefore be set up in a space-saving manner and fixed mechanically in the vicinity of a stationary high-voltage system at a freely selectable location. By suitable positioning the power supply due to a reversible deformation of the high voltage cable, the power connection of the now stationary surge arrester can be electrically connected to the high voltage system. It can be saved so space. Outside the surge arrester, such as in the high-voltage system generated bumps or vibrations that could mechanically overload the surge as bending force or vibration, are effectively reduced by the interaction of the flexible high voltage cable and the damping device on the varistor column containing the breakage ceramic varistor elements and possibly almost completely suppressed. Since the damping device also attenuates directly from the outside directly into the housing introduced forces that are generated for example by mechanical stress of the housing or by earthquake effectively dampens, so the reliability of the surge arrester increases significantly.
Ein allseitiger Schutz des Aktivteil vor unzulässiger mechanischer Beanspruchung wird erreicht, wenn die Dämpfungsvorrichtung einen die Varistorsäule einbettenden Dämpfungskörper aus mindestens einem inkompressiblen, gummiartig verformbaren Material aufweist. Weist der Dämpfungskörper einen Isolator auf, so kann ein sonst erforderliches Isoliermittel zwischen dem Aktivteil und dem Gehäuse eingespart werden. Zugleich kann dann durch Aufbringen einer auf dem elektrischen Potential des Gehäuses gehaltenen elektrisch leitenden Schicht auf die Oberfläche des Isolators das bei Betrieb des Ableiters im Inneren seines Gehäuses wirkende starke elektrische Feld zuverlässig gesteuert werden, wodurch sich die Betriebssicherheit des Ableiters weiter erhöht.An all-round protection of the active part against inadmissible mechanical stress is achieved if the damping device has a damping body embedding the varistor column of at least one incompressible, rubber-like deformable material. If the damping body has an insulator, an otherwise required insulating means can be saved between the active part and the housing. At the same time can then be reliably controlled by applying a held on the electrical potential of the housing electrically conductive layer on the surface of the insulator acting upon operation of the arrester inside its housing strong electric field, which further increases the reliability of the arrester.
Zur Steuerung des vorgenannten starken elektrischen Feldes kann zumindest um den abschirmungsfrei ausgebildeten ersten Kabelabschnitt oder die Varistorsäule ein ringförmig ausgebildetes erstes Feldsteuerelement geführt sein. Zur Verbesserung der Betriebssicherheit enthält dieses Feldsteuerelement ein von einer polymeren Matrix und einem in die Matrix eingebetteten Füllstoff gebildetes Material, das bei Belastung mit einem elektrischen Gleichfeld oder einem elektrischen Wechselfeld von bis zu 100 Hz zumindest eine Dielektrizitätszahl zwischen 5 und 45 oder eine nichtlineare Strom-Spannungs-Kennlinie aufweist. Zur Verbessung des Dämpfungsverhalten und damit zur weiteren Verbesserung der Betriebssicherheit ist das Material des ersten Feldsteuerelements inkompressibel und gummielastisch verformbar.For controlling the aforementioned strong electric field, an annularly designed first field control element can be guided at least around the shield-free first cable section or the varistor column. To improve operational safety, this field control element contains a material formed by a polymeric matrix and a filler embedded in the matrix, which when loaded with a DC electric field or an alternating electric field of up to 100 Hz has at least a dielectric constant between 5 and 45 or a non-linear current. Has voltage characteristic. To improve the damping behavior and thus to further improve the reliability of the material of the first field control element is incompressible and elastically deformable.
Das erste Feldsteuerelement kann um die Varistorsäule geführt und auf dem Potential des in die Kabelisolation eingebetteten Kabelleiters gehalten sein. Zur Verbesserung der Feldsteuerung kann ein zweites Feldsteuerelement vorgesehen sein, welches um den ersten Kabelabschnitt geführt und auf dem Potential des Gehäuses gehalten ist.The first field control element may be routed around the varistor column and held at the potential of the cable conductor embedded in the cable insulation. To improve the field control, a second field control element can be provided, which is guided around the first cable section and held at the potential of the housing.
Das erste Feldsteuerelement kann auch um den ersten Kabelabschnitt geführt und auf dem Potential des Gehäuses gehalten sein.The first field control element can also be guided around the first cable section and held at the potential of the housing.
Eine leicht zu fertigende, betriebssichere Stromübertragung wird mit einer im Gehäuse angeordneten Steckverbindung erreicht mit einem mit dem Kabelleiter des ersten Kabelabschnitts elektrisch leitend verbundenen ersten Steckkontakt und einem mit einer Anschlussarmatur des Aktivteils elektrisch leitend verbundenen zweiten Steckkontakt. Mit Vorteil enthält der erste oder der zweite Steckkontakt eine Kontakttulpe mit mindestens einem Spiralkontakt.An easy-to-manufacture, reliable power transmission is achieved with a plug-in connection arranged in the housing with a first plug contact electrically connected to the cable conductor of the first cable section and a second plug contact electrically connected to a connection fitting of the active part. Advantageously, the first or the second plug contact contains a contact tulip with at least one spiral contact.
Dadurch, dass mindestens eines der Varistorelemente der Varistorsäule als Hochfeldelement ausgeführt ist und bei Beaufschlagung mit einem Stossstrom von 10 kA der Wellenform 8/20 µs eine Restspannung von mindestens 450 V/mm aufweist, kann die Höhe der Varistorsäule auch bei Überspannungsableitern, die für hohe Nennspannungen dimensioniert sind, klein gehalten werden. Hierdurch wird die mechanische Festigkeit der Säule bei vorgegebener Nennspannung und dementsprechend auch die Betriebssicherheit des Ableiters verbessert.Due to the fact that at least one of the varistor elements of the varistor column is designed as a high-field element and has a residual voltage of at least 450 V / mm when exposed to a surge current of 10 kA of the waveform 8/20 .mu.s, the height of the varistor column can also be used for surge arresters which are high Nominal voltages are dimensioned, kept small. As a result, the mechanical strength of the column at a given nominal voltage and, accordingly, the reliability of the arrester is improved.
Das Hochspannungskabel kann einen durch die Kapselung in das mit einem Isoliermittel gefüllte Innere der Hochspannungsanlage führbaren, abschirmungsfrei ausgebildeten dritten Abschnitt des Hochspannungskabels aufweisen, und der Stromanschluss kann an einem freien Ende des dritten Kabelabschnitts angebracht und als Verbindungsteil für eine im Isoliermittel der Hochspannungsanlage angeordneten Stromverbindung ausgebildet sein.The high voltage cable may have a third portion of the high voltage cable that is guidable by the encapsulation in the insulator filled interior of the high voltage system, and the power connector may be attached to a free end of the third cable section and formed as a connection for a power connection provided in the high voltage system isolation means be.
Der Stromanschluss kann als Steckkontakt ausgebildet sein, der Steckkontakt kann Teil eines auf dem Potential des Gehäuses gehaltenen, berührungsgeschützten Steckteils einer Kabelsteckverbindung mit der Hochspannungsanlage sein, das Steckteil kann ein elastisch verformbares Isolierteil aufweisen, und in das Isolierteil kann ein auf dem Potential des Gehäuses gehaltenes drittes Feldsteuerelement eingebettet sein, das ringförmig um einen in die Kapselung der Hochspannungsanlage führbaren, abschirmungsfrei ausgebildeten dritten Abschnitt des Hochspannungskabels geführt ist.The power connector may be formed as a plug contact, the plug contact may be part of a held on the potential of the housing, Be protected contact plug part of a cable connector with the high voltage system, the male part may have an elastically deformable insulating part, and in the insulating a held on the potential of the housing third field control can be embedded, the ring around a feasible in the enclosure of the high voltage system, shielding trained third section the high-voltage cable is guided.
Diese und andere Merkmale der Erfindung ergeben sich aus der folgenden Beschreibung bevorzugter Ausführungsformen der Erfindung, in denen auf die nachfolgenden Figuren Bezug genommen wird:
- Fig.1
- eine Aufsicht auf einen längs einer Achse A geführten Schnitt durch eine Ausführungsform eines Überspannungsableiters nach der Erfindung, der mit Hilfe eines flexiblen Hochspannungskabels elektrisch leitend mit einer Hochspannungsanlage verbunden werden kann,
- Fig.2
- eine Aufsicht auf einen Schnitt durch eine erste Ausführungsform einer Verbindungsstelle des Überspannungsableiters nach
Fig.1 mit der Hochspannungsanlage, und - Fig.3
- eine Aufsicht auf einen Schnitt durch eine zweite Ausführungsform der Verbindungsstelle des Überspannungsableiters nach
Fig.1 mit der Hochspannungsanlage.
- Fig.1
- a plan view of a guided along an axis A section through an embodiment of a surge arrester according to the invention, which can be electrically connected by means of a flexible high voltage cable to a high voltage system,
- Fig.2
- a plan view of a section through a first embodiment of a junction of the surge arrester after
Fig.1 with the high voltage system, and - Figure 3
- a plan view of a section through a second embodiment of the junction of the surge arrester after
Fig.1 with the high voltage system.
Der in
Im Inneren des Gehäuses 10 ist ein in Richtung der Achse A ausgerichtetes, säulenförmiges Aktivteil 20 angeordnet. Wie im einleitend angegebenen Stand der Technik beschrieben, enthält das Aktivteil 20 einen als Säule 21 ausgebildeten Stapel von Varistorelementen, etwa auf der Basis von Metalloxid, wie insbesondere ZnO, sowie eine das Aktivteil 20 nach oben resp. nach unten abschliessende Metallarmatur 22 resp. 23 sowie eine nicht dargestellte Spannvorrichtung, die die beiden Metallarmaturen und damit auch die einzelnen Varistorelemente unter Bildung von Kontaktkraft zur Varistorsäule 21 verspannt. Die Metallarmatur 23 ist über einen gegebenenfalls isoliert aus dem Gehäuse 10 geführten Stromleiter 24 mit Erdpotential verbindbar. Die Metallarmatur 22 ist über eine Steckverbindung 40 mit einem Kabelleiter 35 eines flexiblen Hochspannungskabels 30, das durch einen vom Deckel 13 bestimmten Wandabschnitt des Gehäuses 10 hindurch nach aussen geführt ist, mit einem ausserhalb des Gehäuses angeordneten, in den
Aus
Im Inneren des Gehäuses 10 ist auch ein Feldsteuerelement 25 angeordnet, welches während des Betriebs des Ableiters das zwischen der Varistorsäule 21 und dem auf Erdpotential befindlichen Mantelrohr 11 wirkende elektrische Feld steuert. Das Feldsteuerelement ist mit der Metallarmatur 22 elektrisch leitend verbunden und befindet sich daher auf dem elektrischen Potential des Kabelleiters 35. Es ist im wesentlichen axialsymmetrisch ausgebildet und ist ringförmig um die Varistorsäule 21 herumgeführt. Es kann neben einer auf dem Potential des Kabelleiters 35 gehaltenen Elektrode auch weitere gegenüber dieser Elektrode elektrisch isoliert gehaltene Metall- resp. elektrisch leitende Kunststoffschichten enthalten, die im wesentlichen in koaxialer Anordnung um diese Elektrode geführt sind. Dieses Feldsteuerelement schirmt bei Betrieb des Ableiters Varistorelemente ab, die einem besonders starken elektrischen Feld ausgesetzt sind.In the interior of the
Die Steuerung des elektrischen Feldes zwischen dem nicht abgeschirmten Abschnitt 33 des Hochspannungskabels 30 und dem Gehäuse 10 wird mit einem auf dem elektrischen Potential des Gehäuses 10 gehaltenen, ringförmigen Feldsteuerelement 37 erreicht. Dieses Feldsteuerelement ist mit dem Deckel 13 elektrisch leitend verbunden und befindet sich daher wie das Gehäuse 10 im allgemeinen auf Erdpotential. Das Feldsteuerelement 37 kann wie das Feldsteuerelement 24 aufgebaut sein und ist um den nicht abgeschirmten Kabelabschnitt 33 im wesentlichen axialsymmetrisch herumgeführt.The control of the electric field between the
Wie den
Wie in
Wie in
Beim Verbinden wird das den Stromanschluss 31 enthaltende Steckteil 61 mit dem als Steckkontakt ausgebildeten Stromanschluss 31 voran durch eine nicht bezeichnete Öffnung der elektrisch leitenden, geerdeten Kapselung 51 der Hochspannungsanlage 50 in das ersichtlich als Steckbuchse ausgeführte Steckteil 62 geführt. Dieses Steckteil weist einen als Tulpe ausgeführten Steckkontakt 64 und ein Isolierteil 65 auf. Beim Einführen des Steckteils 61 in die Anlage 50 resp. in die Steckbuchse 62 werden die beiden Isolierteile 63, 65 an konischen Auflageflächen so stark elastisch verformt, dass dazwischen in dielektrisch vorteilhafter Weise kein Luftspalt verbleibt. Anstelle eines von den beiden konischen Auflageflächen gebildeten Innenkonus kann die Steckverbindung auch einen Aussenkonus aufweisen.When connecting the
Ein besonderer Vorteil der Steckverbindung 60 besteht darin, dass Spannungsprüfungen der Hochspannungsanlage in einfacher Weise vor Ort durchgeführt werden können. Nach Entfernen des Steckteils 61 kann am Steckteil 62 eine Prüfspannung angelegt werden und können dann verschiedenen Spannungsprüfungen leicht ausgeführt werden.A particular advantage of the
Beim Einbau des Überspannungsableiters in die Hochspannungsanlage 50 wird der Überspannungsableiter zunächst an einem geeigneten Ort mechanisch festgesetzt und anschliessend der Stromanschluss 31 elektrisch leitend mit einem Stromleiter der Hochspannungsanlage 50 verbunden. Da der Stromanschluss durch elastisches Verformen des Hochspannungskabels 30 gegenüber dem Gehäuse 10 praktisch beliebig positionierbar ist, kann der Ableiter in der Nähe der im allgemeinen stationären Hochspannungsanlage an einem frei wählbaren Ort in platzsparender Weise aufgestellt und mechanisch festgesetzt werden.When installing the surge arrester in the
Durch eine starke Verbiegung oder durch übermässige Schwingbewegungen des Hochspannungskabels hervorgerufene und vom Kabelabschnitt 32 auf den Kabelabschnitt 33 übertragene Kräfte werden mit einer im Inneren des Gehäuses 10 angeordneten Vorrichtung 70 gedämpft. Diese Dämpfungsvorrichtung enthält einen die Varistorsäule 21 einbettenden Dämpfungskörper 71 aus mindestens einem inkompressiblen, gummiartig verformbaren Material.By a strong bending or by excessive oscillatory movements of the high voltage cable caused and transferred from the
Der Dämpfungskörper 71 weist einen den grössten Teil des Gehäuses 10 ausfüllenden Isolator 72 auf. Dieser Isolator enthält ein gegebenenfalls mit einem oder mehreren Zusatzstoffen gefülltes Elastomer, wie typischerweise Silicon oder EPDM. Der Isolator 72 bettet das Aktivteil 20 ein und isoliert es gegenüber dem Gehäuse 10 elektrisch. Eine auf der Oberfläche des Isolators 72 angebrachte Schicht 73 aus elektrisch leitendem Material, wie typischerweise Leitlack, die auf dem elektrischen Potential des Gehäuses gehalten ist, sorgt dafür, dass sich zwischen dem Isolator 72 und dem Gehäuse 10 kein elektrisches Feld aufbauen kann.The damping
Von der Hochspannungsanlage 50 ausgehende mechanische Kräfte, die etwa als Biegekraft oder Schwingung den Überspannungsableiter mechanisch unzulässig stark belasten könnten, werden durch das Zusammenwirken des flexiblen Hochspannungskabels 30 und der Dämpfungsvorrichtung 70 wirksam reduziert und sind dann an der die bruchgefährdeten keramischen Varistorelemente enthaltenden Varistorsäule 21 fast vollständig unterdrückt. Da die Dämpfungsvorrichtung 70 zudem von aussen direkt ins Gehäuse 10 eingeleitete Kräfte, die etwa durch mechanische Beanspruchung des Gehäuses oder durch Erdbeben erzeugt werden, wirksam dämpft, erhöht sich so die Betriebssicherheit des Überspannungsableiters wesentlich.From the high-
Eine Verbesserung der Dämpfung und damit eine weitere Erhöhung der Betriebssicherheit wird dadurch erreicht, dass die Feldsteuerelemente 25 und 37 in den Isolator 72 eingebettet sind. Eine besonders gute Dämpfung wird erreicht, wenn die im allgemeinen aus Metall geformten Feldsteuerelemente aus einem inkompressiblen gummiartig verformbaren Material gebildet sind, das eine polymere Matrix und einen in die Matrix eingebetteten Füllstoff enthält, und das bei Belastung mit einem elektrischen Gleichfeld oder einem elektrischen Wechselfeld von bis zu 100 Hz zumindest eine Dielektrizitätszahl zwischen 5 und 45 oder eine nichtlineare Strom-Spannungs-Kennlinie aufweist. Geeignete Füllstoffe sind typischerweise Leitfähigkeitsruss, Titanate, wie Bariumtitanat, oder Mikrovaristoren, wie metalloxid-dotiertes und gesintertes Zinkoxid. Da sich die Bruchbelastung der Varistorsäule 21 mit zunehmender Säulenlange erheblich vergrössert, werden die von der Hochspannungsanlage 50 ausgehenden oder anderweitig erzeugten Kräfte besonders wirksam in Überspannungsableitern gedämpft, die eine vergleichsweise hohe Varistorsäule 21 aufweisen und für Spannungen höher 44 kV, vorzugsweise höher 100 kV, dimensioniert sind. Dadurch, dass mindestens eines der Varistorelemente der Varistorsäule 21 ein sogenanntes Hochfeldelement, d. h. ein Varistorelement ist, das bei Beaufschlagung mit einem Stossstrom von 10 kA der Wellenform 8/20 µs eine Restspannung von mindestens 450 V/mm aufweist, wird die Varistorsäule 21 zusätzlich verkürzt und so die Betriebssicherheit des Ableiters weiter erhöht.An improvement of the damping and thus a further increase in the operational safety is achieved in that the
- 1010
- Gehäusecasing
- 1111
- Mantelrohrcasing pipe
- 1212
- Bodenground
- 1313
- Deckelcover
- 1414
- Flanschflange
- 2020
- Aktivteilactive part
- 2121
- Varistorsäulevaristor
- 22, 2322, 23
- Metallarmaturenmetal fittings
- 2424
- Stromleiterconductor
- 2525
- FeldsteuerelementField control
- 3030
- HochspannungskabelHigh voltage cables
- 3131
- Stromanschluss, SteckkontaktPower connection, plug contact
- 3232
- abgeschirmter Kabelabschnittshielded cable section
- 3333
- abschirmungsfreier KabelabschnittShield-free cable section
- 3434
- Abschirmungshielding
- 3535
- Kabelleitercable conductor
- 3636
- Kabelisolationcable insulation
- 37, 3837, 38
- FeldsteuerelementField control
- 3939
- abschirmungsfreier KabelabschnittShield-free cable section
- 4040
- Steckverbindungconnector
- 41, 4241, 42
- SteckteileSteckteile
- 4343
- Spiralkontaktspiral contact
- 5050
- HochspannungsanlageHigh-voltage system
- 5151
- Kapselungencapsulation
- 5252
- Isoliermittelinsulation
- 5353
- Flanschflange
- 6060
- Steckverbindungconnector
- 61, 6261, 62
- SteckteileSteckteile
- 6363
- IsolierteilInsulation
- 6464
- Steckkontaktplug contact
- 6565
- IsolierteilInsulation
- 7070
- Dämpfungvorrichtungdamping device
- 7171
- Dämpfungskörperdamping body
- 7272
- Isolatorinsulator
- 7373
- elektrisch leitende Schichtelectrically conductive layer
- AA
- Achseaxis
Claims (15)
- Surge arrester comprising a housing (10) with protection against electric shock, a voltage-limiting active part (20), which is arranged in the housing and has a stack of varistor elements formed as a varistor column (21), and comprising an electrical connection (31), which is arranged outside the housing and is electrically conductively connected to the varistor column (21) for connecting a high-voltage installation (50) which has protection against electric shock and is intended to be protected from overvoltage, wherein the electrically conductive connection between the varistor column (21) and the electrical connection (31) is in the form of a cable conductor (35) of a flexible high-voltage cable (30), wherein the high-voltage cable (30) has two cable sections (32, 33), of which a first section (33), which is arranged in the interior of the housing (10), is formed without a shield, and a second cable section (32), which is arranged outside the housing (10), has an electrically conductive shield (34), which surrounds the cable conductor (35) and cable insulation (36) and is electrically conductively connectable firstly to the housing (10) and secondly to an encapsulation (51), with protection against electric shock, of the high-voltage installation (50), and wherein the housing accommodates a damping apparatus (70) for damping oscillations which are introduced into the varistor column (21) from the outside.
- Surge arrester according to Claim 1, characterized in that the damping apparatus (70) has a damping body (71) consisting of at least one incompressible material which is deformable in rubber-like fashion, said damping body embedding the varistor column (21).
- Surge arrester according to Claim 2, characterized in that the damping body (71) has an insulator (72).
- Surge arrester according to Claim 3, characterized in that an electrically conductive layer (73) kept to the electrical potential of the housing (10) is applied to the surface of the insulator (72).
- Surge arrester according to one of Claims 1 to 4, characterized in that a ring-shaped first field control element (25, 37) is guided at least around the first cable section (33) or the varistor column (21).
- Surge arrester according to Claim 5, characterized in that the field control element (25, 37) contains a material formed from a polymer matrix and a filler embedded in the matrix, said material having at least a dielectric constant of between 5 and 45 or a nonlinear current-voltage characteristic during loading with an electrical DC field or an electrical AC field of up to 100 Hz.
- Surge arrester according to either of Claims 5 and 6, characterized in that the material of the first field control element (25, 37) is incompressible and deformable in rubber-elastic fashion.
- Surge arrester according to one of Claims 5 to 7, characterized in that the first field control element (25) is guided around the varistor column (21) and is kept to the potential of the cable conductor (35) embedded in the cable insulation (36).
- Surge arrester according to Claim 8, characterized in that a second field control element (37) is provided, which is guided around the first cable section (33) and is kept to the potential of the housing (10).
- Surge arrester according to one of Claims 5 to 7, characterized in that the first field control element (37) is guided around the first cable section (33) and is kept to the potential of the housing (10).
- Surge arrester according to one of Claims 1 to 10, characterized in that a plug-type connection (40) is provided in the housing (10), said plug-type connection comprising a first plug-type contact (41) which is electrically conductively connected to the cable conductor (35) of the first cable section (33) and a second plug-type contact (42) which is electrically conductively connected to a connection fitting (22) of the active part (20).
- Surge arrester according to Claim 11, characterized in that the first plug-type contact (41) or the second plug-type contact (42) contains a contact tulip with at least one spiral contact (43).
- Surge arrester according to one of Claims 1 to 12, characterized in that at least one of the varistor elements of the varistor column (21) has a residual voltage, based on the physical height of the at least one varsitor element, of at least 450 V/mm when a surge current of 10 kA having the waveform 8/20 µs is applied.
- Surge arrester according to one of Claims 1 to 13, characterized in that the high-voltage cable (30) has a third section (39) of the high-voltage cable (30), which third section is formed without a shield, and in that the electrical connection (31) is fitted at one free end of the third cable section (39) and is formed as connecting part.
- Surge arrester according to one of Claims 1 to 13, characterized in that the electrical connection (31) is in the form of a plug-type contact, in that the plug-type contact (31) is part of a plug-type part (61) of a cable plug-type connection (60) to the high-voltage installation (50), said plug-type part (61) having protection against electric shock and being kept to the potential of the housing (10), in that the plug-type part (61) has an elastically deformable insulating part (63), and in that a third field control element (38) is embedded in the insulating part (63), said third field control element being held to the potential of the housing (10) and being guided in the form of a ring around a third section (39) of the high-voltage cable (30), which third section is formed without a shield.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11191743.1A EP2600358B1 (en) | 2011-12-02 | 2011-12-02 | Surge absorber |
RU2012151521/07A RU2529647C2 (en) | 2011-12-02 | 2012-11-30 | Arrester for overvoltage protection |
CN201210502507.8A CN103137278B (en) | 2011-12-02 | 2012-11-30 | Overvoltage arrester |
US13/692,561 US8964346B2 (en) | 2011-12-02 | 2012-12-03 | Surge arrester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11191743.1A EP2600358B1 (en) | 2011-12-02 | 2011-12-02 | Surge absorber |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2600358A1 EP2600358A1 (en) | 2013-06-05 |
EP2600358B1 true EP2600358B1 (en) | 2014-04-30 |
Family
ID=45047683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11191743.1A Active EP2600358B1 (en) | 2011-12-02 | 2011-12-02 | Surge absorber |
Country Status (4)
Country | Link |
---|---|
US (1) | US8964346B2 (en) |
EP (1) | EP2600358B1 (en) |
CN (1) | CN103137278B (en) |
RU (1) | RU2529647C2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017216024A1 (en) * | 2017-09-12 | 2019-03-14 | Siemens Aktiengesellschaft | Surge arresters |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102016218228A1 (en) | 2016-09-22 | 2018-03-22 | Siemens Aktiengesellschaft | Surge arresters |
CN114204473B (en) * | 2021-12-06 | 2024-05-14 | 北京中车赛德铁道电气科技有限公司 | Soft-connection solid insulation integrated device |
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GB8623178D0 (en) * | 1986-09-26 | 1987-01-14 | Raychem Ltd | Circuit protection device |
US5159697A (en) * | 1990-12-18 | 1992-10-27 | General Electric Company | X-ray tube transient noise suppression system |
FR2687246B1 (en) * | 1992-02-07 | 1994-12-30 | Alsthom Gec | ZINC OXIDE SURGE PROTECTOR WITH SERIAL SPLITTER. |
JP3279439B2 (en) * | 1994-07-11 | 2002-04-30 | 株式会社日立製作所 | Built-in lightning arrester |
DE19522867B4 (en) * | 1995-06-23 | 2005-12-22 | Alstom Sachsenwerk Gmbh | coupling isolator |
DE19622140A1 (en) * | 1996-06-01 | 1997-12-04 | Asea Brown Boveri | Surge arresters |
DE19942633A1 (en) * | 1999-09-07 | 2001-03-08 | Abb Hochspannungstechnik Ag | Surge arresters |
ATE288127T1 (en) | 2002-07-15 | 2005-02-15 | Abb Schweiz Ag | PLUG-IN ELECTRICAL APPARATUS, PARTICULARLY SURGE ARRESTER |
RU2211497C1 (en) * | 2002-10-23 | 2003-08-27 | Александров Георгий Николаевич | Surge limiting device |
EP1447822B1 (en) * | 2003-02-12 | 2009-09-09 | ABB Technology AG | Active component for a surge arrester |
KR20060036103A (en) * | 2003-07-21 | 2006-04-27 | 엑스2와이 어테뉴에이터스, 엘.엘.씨 | Filter assembly |
MXPA06014339A (en) * | 2004-06-10 | 2007-03-26 | Norman R Byrne | Pluggable surge protector. |
US7450363B2 (en) * | 2005-07-11 | 2008-11-11 | Cooper Technologies Company | Combination electrical connector |
DE102006003576B4 (en) * | 2006-01-25 | 2007-10-25 | Tridelta Überspannungsableiter Gmbh | Surge arrester with cage design |
DE102006003579B4 (en) * | 2006-01-25 | 2007-10-25 | Tridelta Überspannungsableiter Gmbh | Surge arrester with cage design and manufacturing process for this |
DE102007027411A1 (en) | 2007-06-11 | 2008-12-18 | Siemens Ag | arrester |
CN201859724U (en) | 2010-11-19 | 2011-06-08 | 西安神电电器有限公司 | Plug-in type arrester |
-
2011
- 2011-12-02 EP EP11191743.1A patent/EP2600358B1/en active Active
-
2012
- 2012-11-30 CN CN201210502507.8A patent/CN103137278B/en active Active
- 2012-11-30 RU RU2012151521/07A patent/RU2529647C2/en not_active IP Right Cessation
- 2012-12-03 US US13/692,561 patent/US8964346B2/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017216024A1 (en) * | 2017-09-12 | 2019-03-14 | Siemens Aktiengesellschaft | Surge arresters |
Also Published As
Publication number | Publication date |
---|---|
CN103137278A (en) | 2013-06-05 |
RU2012151521A (en) | 2014-06-10 |
US8964346B2 (en) | 2015-02-24 |
RU2529647C2 (en) | 2014-09-27 |
US20130141830A1 (en) | 2013-06-06 |
CN103137278B (en) | 2016-01-20 |
EP2600358A1 (en) | 2013-06-05 |
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