EP0729209A1 - Device for indicating a defective state of an electric apparatus, especially a surge arrester - Google Patents
Device for indicating a defective state of an electric apparatus, especially a surge arrester Download PDFInfo
- Publication number
- EP0729209A1 EP0729209A1 EP96810083A EP96810083A EP0729209A1 EP 0729209 A1 EP0729209 A1 EP 0729209A1 EP 96810083 A EP96810083 A EP 96810083A EP 96810083 A EP96810083 A EP 96810083A EP 0729209 A1 EP0729209 A1 EP 0729209A1
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- EP
- European Patent Office
- Prior art keywords
- shell
- display device
- insulating material
- housing
- switching element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
- H01T1/00—Details of spark gaps
- H01T1/12—Means structurally associated with spark gap for recording operation thereof
Definitions
- the invention is based on a device for indicating a faulty state of an electrical apparatus, in particular a surge arrester, with a sensor for detecting a fault current flowing through the apparatus, a gas-tight insulating material housing which receives the sensor and a display element. If a fault current occurs, the sensor destroys the housing and makes the display element visible. An observer can recognize the faulty condition of the apparatus without the use of aids and promptly replace it.
- the invention relates to a prior art of display devices, as specified in EP 0 564 334 A1.
- a display device described in this prior art is used to monitor a surge arrester used in a high or medium voltage network for a faulty operating state.
- This device has an insulating material housing with an easily breakable window.
- a power connection of the surge arrester is led through the insulating housing.
- the part of the power connection located inside the housing is surrounded by a magnetic core which carries the secondary winding of a current transformer which has the power connection as the primary winding.
- the secondary winding is with connected to an ohmic resistor which is embedded in an explosive charge arranged inside the housing. If a fault current occurs, the ohmic resistance continuously supplied by the current transformer heats up very strongly.
- the resistance ignites the explosive charge above a critical temperature limit.
- the window of the insulating material housing is broken open and a colored band serving as a display element is ejected from the housing. After the faulty state has responded and signaled, the surge arrester and the display device are removed and replaced.
- the invention is based on the object of specifying a display device of the type mentioned, which is distinguished by a simple structure and which can be made operational again after the response in an economical manner.
- the display device is characterized in that, in addition to a reusable metal housing, it only contains a commercially available switching element which is sold in large quantities, the remainder of which can be easily removed from the metal housing after the display device has responded and replaced by a new switching element.
- a commercially available switching element which is sold in large quantities, the remainder of which can be easily removed from the metal housing after the display device has responded and replaced by a new switching element.
- an ohmic resistor provided in the switching element for example a fuse or a PTC resistor
- the operating states to be recorded by the apparatus to be protected such as current surges of, for example, 100 kA during 4/10 ⁇ s, can act on the display device in a very simple manner, without the latter To initiate response.
- FIGS. 1 and 2 denotes an electrical apparatus designed as a surge arrester with a potential-carrying part 2 acting as a current connection, which is connected in an electrically conductive manner to a device 3 for indicating a defective state of the surge arrester 1.
- the display device has a two-part metal housing 4 made of a material which conducts electricity well, such as aluminum or an aluminum alloy, which is fastened to a switching element 5 of the display device 3.
- the switching element 5 contains a cylinder-symmetrical, gas-tight insulating material housing 6 made of a brittle material, such as a highly filled polymer based on an epoxy, and two cylinder-symmetrical electrodes 7, 8 which are guided into the insulating material housing and each held at one end of the insulating material housing 6
- the two electrodes 7, 8 are arranged one above the other on the axis of the insulating material housing 6 and form a spark gap 9 in the insulating material housing 6 at the free ends, of which the electrode 7 is formed as a tip.
- the mutually facing end sections of the electrodes 7, 8 are connected to the current connections of a resistor 10 which is connected in parallel with the spark gap 9 and is preferably designed as a fuse or PTC thermistor.
- the resistor 10 is dimensioned such that it can carry a high current surge value, for example of 100 kA 4/10 microseconds, still held by the surge arrester 1, and that when loaded for a predetermined period of time, for example 0.1 ms, with a value above one predetermined limit value current, for example 20 A, its electrical conductivity, for example by melting or through a PTC transition, suddenly reduced.
- An explosive charge 11 is attached in the interior of the insulating material housing 6, not far from the spark gap 9, the amount of which is dimensioned such that when the charge is ignited, the insulating material housing 6 can be detonated into at least two parts which are led away from one another and each hold one of the two electrodes 7, 8.
- the metal housing 4 is formed by two shells 12, 13 which have different diameters and which are each held at their ends at opposite ends of the switching element 5.
- the shell 12 with the larger diameter accommodates the shell 13 with the smaller diameter.
- the shell 12 has an opening in its bottom through which a connection of the electrode 7, which is galvanically connected to the potential-carrying part 2 of the surge arrester and has an external thread, is guided.
- the shell 12 is not by means of a designated nut firmly connected to the upper end of the switching element 5.
- the shell 12 carries at least one contact element 14, which is directed into the shell interior and is ring-shaped and has an inner cone.
- This contact element 14 is provided with an internal thread which interacts with an external thread of the shell 12.
- the shell 12 has discharge openings 15 for compressed gas.
- These blow-out openings can be provided with a filter which retains solid parts inside the housing and can be designed in such a way that escaping compressed gas is guided in a predetermined direction.
- the shell 13 also has an opening in its bottom through which a connection of the electrode 8, which has an external thread and is connected to earth potential, is guided.
- the shell 13 is fixedly connected to the lower end of the switching element 5 by means of an unspecified nut.
- the shell 13 carries on its outer side covered by the shell 12 a display element 16, for example in the form of a color coating.
- the shell 13 is widened like a cone and is formed in the region of the shell edge on its outer side as an electrical contact element 17 which is adapted to the inner cone of the annular contact element 14 is.
- the interior of the metal housing 4 is closed off by a cover 18 which is led from the bottom of the shell 13 to the edge of the shell 12.
- the surge arrester 1 only carries a small leakage current, which is typically in the mA range. This leakage current flows from the potential-carrying part 2 via the electrode 7, the resistor 10, the electrode 8 and a flexible conductor section, not shown, which is galvanically connected to this electrode 8 by means of a screw connection, to earth.
- the surge arrester 1 or another electrical device for example an insulator of a switch or a transformer, or an insulator of a high-voltage system, has a defect, then a fault current flows in the A or even kA range through the ohmic, which acts as a current sensor Resistor 10.
- Resistor 10 is strongly heated and changes to a high resistance state within a few ms, for example by melting or a PTC transition.
- the fault current now commutates with arcing into a current path containing the spark gap 9.
- the arranged in the area of the spark gap 9 explosive charge 11 is ignited by the arc forming.
- the compressed gas is expelled through the blow-out openings from the inside of the metal housing 4 enclosed by the shells 12 and 13.
- the insulating material housing 6 is destroyed, splinters are retained by the metal housing 4 inside the housing.
- the defective surge arrester 1 and the display device 3 can now be removed and replaced by new devices.
- the display device 3 can be made operational again in a particularly economical manner by installing a new switching element 5. After unscrewing the contact element 14 and loosening the two nuts not shown in the figures, only the two electrodes 7 and 8 have to be removed and then only the new switching element 5 has to be inserted and screwed.
Landscapes
- Thermistors And Varistors (AREA)
- Emergency Protection Circuit Devices (AREA)
- Gas-Insulated Switchgears (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
Description
Bei der Erfindung wird ausgegangen von einer Vorrichtung zur Anzeige eines fehlerhaften Zustands eines elektrischen Apparates, insbesondere eines Überspannungsableiters, mit einem Sensor zur Erfassung eines durch den Apparat fliessenden Fehlerstroms, einem den Sensor aufnehmenden, gasdichten Isolierstoffgehäuse und einem Anzeigeelement. Beim Auftreten von Fehlerstrom bewirkt der Sensor eine Zerstörung des Gehäuses und die Sichtbarmachung des Anzeigeelementes. Ein Beobachter kann ohne den Einsatz von Hilfsmitteln den fehlerhaften Zustand des Apparates erkennen und rechtzeitig dessen Auswechslung veranlassen.The invention is based on a device for indicating a faulty state of an electrical apparatus, in particular a surge arrester, with a sensor for detecting a fault current flowing through the apparatus, a gas-tight insulating material housing which receives the sensor and a display element. If a fault current occurs, the sensor destroys the housing and makes the display element visible. An observer can recognize the faulty condition of the apparatus without the use of aids and promptly replace it.
Die Erfindung nimmt auf einen Stand der Technik von Anzeigevorrichtungen Bezug, wie er in EP 0 564 334 Al angegeben ist. Eine in diesem Stand der Technik beschriebene Anzeigevorrichtung dient der Überwachung eines in einem Hoch- oder Mittelspannungsnetz eingesetzten Überspannungsableiters auf einen fehlerhaften Betriebszustand. Diese Vorrichtung weist ein Isolierstoffgehäuse mit einem leicht zerbrechbaren Fenster auf. Durch das Isolierstoffgehäuse hindurch ist ein Stromanschluss des Überspannungsableiters geführt. Der im Gehäuseinneren befindliche Teil des Stromanschlusses ist von einem Magnetkern umgeben, welcher die Sekundärwicklung eines den Stromanschluss als Primärwicklung aufweisenden Stromwandlers trägt. Die Sekundärwicklung ist mit einem ohmschen Widerstand verbunden, der in eine im Gehäuseinneren angeordnete Sprengstoff ladung eingebettet ist. Beim Auftreten eines Fehlerstroms erwärmt sich der vom Stromwandler kontinuierlich mit Strom gespeiste ohmsche Widerstand sehr stark. Der Widerstand zündet die Sprengstoffladung oberhalb einer kritischen Grenztemperatur. Das Fenster des Isolierstoffgehäuses wird hierbei aufgebrochen und ein als Anzeigelement dienendes farbiges Band aus dem Gehäuse ausgestossen. Nach dem Ansprechen und Signalisieren des fehlerhaften Zustands werden der Überspannungsableiter und die Anzeigevorrichtung ausgebaut und ersetzt.The invention relates to a prior art of display devices, as specified in EP 0 564 334 A1. A display device described in this prior art is used to monitor a surge arrester used in a high or medium voltage network for a faulty operating state. This device has an insulating material housing with an easily breakable window. A power connection of the surge arrester is led through the insulating housing. The part of the power connection located inside the housing is surrounded by a magnetic core which carries the secondary winding of a current transformer which has the power connection as the primary winding. The secondary winding is with connected to an ohmic resistor which is embedded in an explosive charge arranged inside the housing. If a fault current occurs, the ohmic resistance continuously supplied by the current transformer heats up very strongly. The resistance ignites the explosive charge above a critical temperature limit. The window of the insulating material housing is broken open and a colored band serving as a display element is ejected from the housing. After the faulty state has responded and signaled, the surge arrester and the display device are removed and replaced.
Der Erfindung, wie sie in den Patentansprüchen angegeben ist, liegt die Aufgabe zugrunde, eine Anzeigevorrichtung der eingangs genannten Art anzugeben, welche sich durch einfachen Aufbau auszeichnet und welche nach dem Ansprechen in wirtschaftlicher Weise wieder betriebsbereit gemacht werden kann.The invention, as specified in the claims, is based on the object of specifying a display device of the type mentioned, which is distinguished by a simple structure and which can be made operational again after the response in an economical manner.
Die Anzeigevorrichtung nach der Erfindung zeichnet sich dadurch aus, dass sie neben einem mehrfach verwendbaren Metallgehäuse lediglich ein kommerziell erhältliches und in grossen Stückzahlen vertriebenes Schaltelement enthält, dessen Reste nach dem Ansprechen der Anzeigevorrichtung leicht aus dem Metallgehäuse ausgebaut und durch ein neues Schaltelement ersetzt werden können. Durch geeignete Bemessung eines im Schaltelement vorgesehenen ohmschen Widerstands, beispielsweise einer Schmelzsicherung oder eines PTC-Widerstands, können in sehr einfacher Weise die vom zu schützenden Apparat aufzunehmenden Betriebszustände, wie etwa Stromstösse von beispielsweise 100kA während 4/10µs, auf die Anzeigevorrichtung einwirken, ohne deren Ansprechen zu veranlassen. Durch Verwendung einer parallel zum ohmschen Widerstand angeordneten Funkenstrecke wird beim Ansprechen der Anzeigevorrichtung ein Lichtbogen gezündet, welcher mit grosser Sicherheit die Explosion einer im Schaltelement vorgesehenen Sprengstoffladung einleitet. Hierbei entstehende Splitter werden von Metallgehäuse aufgenommen, entstehendes Druckgas kann von Metallgehäuse in Richtungen abgelenkt werden, in denen es keine Folgeschäden hervorrufen kann. Das auf dem Metallgehäuse angebrachte und beim Ansprechen sichtbar gemachte Anzeigeelement kann praktisch von allen Seiten gut beobachtet werden.The display device according to the invention is characterized in that, in addition to a reusable metal housing, it only contains a commercially available switching element which is sold in large quantities, the remainder of which can be easily removed from the metal housing after the display device has responded and replaced by a new switching element. By appropriately dimensioning an ohmic resistor provided in the switching element, for example a fuse or a PTC resistor, the operating states to be recorded by the apparatus to be protected, such as current surges of, for example, 100 kA during 4/10 μs, can act on the display device in a very simple manner, without the latter To initiate response. By using a spark gap arranged parallel to the ohmic resistance, an arc is ignited when the display device is triggered, which arc with great certainty the explosion of one in the switching element initiates the intended explosive charge. The resulting splinters are absorbed by the metal housing, and the resulting compressed gas can be deflected by the metal housing in directions in which it cannot cause any consequential damage. The display element attached to the metal housing and made visible when activated can be observed practically from all sides.
Bevorzugte Ausführungsbeispiele der Erfindung und die damit erzielbaren weiteren Vorteile werden nachfolgend anhand von Zeichnungen näher erläutert. Hierbei zeigt:
- Fig.1
- eine Aufsicht auf einen axial geführten Schnitt durch eine im wesentlichen zylindersymmetrisch ausgebildete und in einen Stromanschluss eines Überspannungsableiters eingebaute Anzeigevorrichtung nach der Erfindung vorm Ansprechen infolge eines Fehlerstroms, und
- Fig.2
- die Anzeigevorrichtung gemäss Fig.1 nach dem Ansprechen.
- Fig. 1
- a plan view of an axially guided section through an essentially cylindrical symmetrical and built into a power connection of a surge arrester display device according to the invention before response due to a fault current, and
- Fig. 2
- the display device according to Figure 1 after the response.
In den Figuren 1 und 2 bezeichnet 1 einen als Überspannungsableiter ausgeführten elektrischen Apparat mit einem als Stromanschluss wirkenden potentialführenden Teil 2, welches in elektrisch leitender Weise mit einer Vorrichtung 3 zur Anzeige eines fehlerhaften Zustands des Überspannungsableiters 1 verbunden ist. Die Anzeigevorrichtung weist ein zweiteiliges Metallgehäuse 4 aus einem elektrischen Strom gut leitenden Material, wie etwa Aluminium oder einer Aluminiumlegierung auf, welches an einem Schaltelement 5 der Anzeigevorrichtung 3 befestigt ist.In FIGS. 1 and 2, 1 denotes an electrical apparatus designed as a surge arrester with a potential-carrying
Das Schaltelement 5 enthält ein zylindersymmetrisches, gasdicht ausgebildetes Isolierstoffgehäuse 6 aus einem spröden Material, wie etwa einem hochgefüllten Polymer auf der Basis eines Epoxids, und zwei zylindersymmetrische, ins Isolierstoffgehäuse geführte und jeweils an einem der Enden des Isolierstoffgehäuses 6 gehaltene Elektroden 7, 8. Die beiden Elektroden 7, 8 sind übereinanderstehend auf der Achse des Isolierstoffgehäuses 6 angeordnet und bilden an einander zugewandten freien Enden, von denen das der Elektrode 7 als Spitze ausgebildet ist, eine im Isolierstoffgehäuse 6 befindliche Funkenstrecke 9. Die einander zugewandten Endabschnitte der Elektroden 7, 8 sind mit den Stromanschlüssen eines parallel zur Funkenstrecke 9 geschalteten und vorzugsweise als Schmelzsicherung oder Kaltleiter ausgebildeten Widerstands 10 verbunden. Der Widerstand 10 ist derart bemessen, dass er einen vom Überspannungsableiter 1 noch gehaltenen Hochstromstosswert, beispielsweise von 100 kA 4/10 µs, führen kann, und dass sich bei Belastung über einen vorgegebenen Zeitraum, von beispielsweise 0,1 ms, mit einem oberhalb eines vorgegebenen Grenzwertes liegenden Strom, von beispielsweise 20 A, seine elektrische Leitfähigkeit, etwa durch Schmelzen oder durch einen PTC-Übergang, schlagartig verringert. Im Inneren des Isolierstoffgehäuses 6 unweit der Funkenstrecke 9 ist eine Sprengstoffladung 11 angebracht, deren Menge so bemessen ist, dass bei Zündung der Ladung das Isolierstoffgehäuse 6 in mindestens zwei voneinander weggeführte und jeweils eine der beiden Elektroden 7, 8 haltende Teile aufsprengbar ist.The switching element 5 contains a cylinder-symmetrical, gas-tight insulating material housing 6 made of a brittle material, such as a highly filled polymer based on an epoxy, and two cylinder-
Das Metallgehäuse 4 ist von zwei unterschiedliche Durchmesser aufweisenden Schalen 12, 13 gebildet, die mit ihren Böden jeweils an entgegengesetzten Enden des Schaltelementes 5 gehalten sind. Die den den grösseren Durchmesser aufweisende Schale 12 nimmt die den kleineren Durchmesser aufweisende Schale 13 auf. Die Schale 12 weist in ihrem Boden eine Öffnung auf, durch die ein mit dem potentialführenden Teil 2 des Überspannungsableiters galvanisch verbundener und ein Aussengewinde aufweisender Anschluss der Elektrode 7 geführt ist. Die Schale 12 ist mittels einer nicht bezeichneten Mutter fest mit dem oberen Ende des Schaltelementes 5 verbunden. An ihrem Rand trägt die Schale 12 mindestens ein ins Schaleninnere gerichtetes Kontaktelement 14, welches ringförmig ausgebildet ist und einen Innenkonus aufweist. Dieses Kontaktelement 14 ist mit einem Innengewinde versehen, welches mit einem Aussengewinde der Schale 12 zusammenwirkt. Ferner weist die Schale 12 Ausblasöffnungen 15 für Druckgas auf. Diese Ausblasöffnungen können mit einem feste Teile im Gehäuseinneren zurückhaltenden Filter versehen und so ausgebildet werden, dass austretendes Druckgas in eine vorbestimmte Richtung geführt wird.The
Die Schale 13 weist in ihrem Boden ebenfalls eine Öffnung auf, durch die ein ein Aussengewinde aufweisender und an Erdpotential gelegter Anschluss der Elektrode 8 geführt ist. Die Schale 13 ist mittels einer nicht bezeichneten Mutter fest mit dem unteren Ende des Schaltelementes 5 verbunden. Die Schale 13 trägt auf ihrer von der Schale 12 abgedeckten Aussenseite ein beispielsweise als Farbbeschichtung ausgebildetes Anzeigeelement 16. Die Schale 13 ist konusartig aufgeweitet und ist im Bereich des Schalenrandes auf ihrer Aussenseite als elektrisches Kontaktelement 17 ausgebildet, welches an den Innenkonus des ringförmigen Kontaktelements 14 angepasst ist. Das Innere des Metallgehäuses 4 ist durch eine vom Boden der Schale 13 an den Rand der Schale 12 geführte Abdeckung 18 abgeschlossen.The
Die Wirkungsweise der Anzeigevorrichtung 3 ist nun wie folgt: Unter normalen Betriebsbedingungen führt der Überspannungsableiter 1 lediglich einen kleinen Leckstrom, welcher typischerweise im mA-Bereich liegt. Dieser Leckstrom fliesst vom potentialführenden Teil 2 über die Elektrode 7, den Widerstand 10, die Elektrode 8 und einen mit dieser Elektrode 8 mittels einer Schraubverbindung galvanisch verbundenen, nicht dargestellten flexiblen Leiterabschnitt zur Erde ab. In entsprechender Weise werden vom Überspannungsableiter 1 garantierte Stromstösse, beispielsweise bis 100 kA 4/10µs, welche als Folge von Überspannungen durch den Ableiter fliessen, zur Erde abgeführt, ohne dass die Anzeigevorrichtung 3 anspricht.The operation of the
Weist der Überspannungsableiter 1 oder in entsprechender Weise ein anderer elektrischer Apparat, beispielsweise ein Isolator eines Schalters oder eines Transformators, oder ein Isolator einer Hochspannungsanlage, einen Defekt auf, so fliesst ein Fehlerstrom im A- oder sogar kA-Bereich durch den als Stromsensor wirkenden ohmschen Widerstand 10. Der Widerstand 10 wird stark erhitzt und geht innerhalb weniger ms, etwa durch Schmelzen oder einen PTC-Übergang, in einen hochohmigen Zustand über. Der Fehlerstrom kommutiert nun unter Lichtbogenbildung in einen die Funkenstrecke 9 enthaltenden Strompfad. Die im Bereich der Funkenstrecke 9 angeordnete Sprengstoff ladung 11 wird durch den sich bildenden Lichtbogen gezündet. Das sich hierbei bildende Druckgas zersprengt das spröde Isolierstoffgehäuse 6 schlagartig und treibt dann die Elektrode 8 und die mit ihr starr verbundene Schale 13 nach unten bis die in Fig.2 dargestellte Zustand der Anzeigevorrichtung 3 erreicht ist. Das Druckgas wird durch die Ausblasöffnungen aus dem Inneren des von den Schalen 12 und 13 umschlossenen Metallgehäuses 4 ausgestossen. Bei der Zerstörung des Isolierstoffgehäuses 6 entstehende Splitter werden vom Metallgehäuse 4 im Gehäuseinneren zurückgehalten.If the surge arrester 1 or another electrical device, for example an insulator of a switch or a transformer, or an insulator of a high-voltage system, has a defect, then a fault current flows in the A or even kA range through the ohmic, which acts as a current sensor Resistor 10. Resistor 10 is strongly heated and changes to a high resistance state within a few ms, for example by melting or a PTC transition. The fault current now commutates with arcing into a current path containing the
In dem in Fig.2 dargestellten Zustand haben sich die als Kontaktelement 17 ausgebildete konusartige Aufweitung der Schale 13 und das ringartig ausgebildete Kontaktelement 14 der feststehenden Schale 12 verklemmt. Der Fehlerstrom ist wird nicht mehr über die Funkenstrecke 9 des Schaltelements 5 geführt, sondern fliesst nun über die galvanisch mit der Elektrode 7 verbundene Schale 12, die miteinander kontaktierten Kontaktelemente 14 und 17 und die galvanisch mit der Elektrode 8 verbundene Schale 13 zur Erde ab. Der das Anzeigeelement 14 tragende Abschnitt der Schale 12 ist nun sichtbar geworden und signalisiert einem Beobachter den defekten Überspannungsableiter.In the state shown in FIG. 2, the conical widening of the
Der defekte Überspannungsableiter 1 und die Anzeigevorrichtung 3 können nun ausgebaut und durch neue Geräte ersetzt werden.The
Die Anzeigevorrichtung 3 kann durch Einbau eines neuen Schaltelementes 5 in besonders wirtschaftlicher Weise wieder betriebsbereit gemacht werden. Nach Abschrauben des Kontaktelements 14 und Lösen der beiden in den Figuren nicht bezeichneten Muttern sind lediglich die beiden Elektroden 7 und 8 zu entfernen und ist sodann nur noch das neue Schaltelement 5 einzusetzen und zu verschrauben.The
- 11
- ÜberspannungsableiterSurge arresters
- 22nd
- potentialführendes Teilpotential-carrying part
- 33rd
- AnzeigevorrichtungDisplay device
- 44th
- MetallgehäuseMetal case
- 55
- SchaltelementSwitching element
- 66
- IsolierstoffgehäuseInsulating housing
- 7, 87, 8
- ElektrodenElectrodes
- 99
- FunkenstreckeSpark gap
- 1010th
- Widerstandresistance
- 1111
- SprengstoffladungExplosives
- 12, 1312, 13
- SchalenPeel
- 1414
- KontaktelementContact element
- 1515
- AusblasöffnungenExhaust openings
- 1616
- AnzeigeelementDisplay element
- 1717th
- KontaktelementContact element
- 1818th
- Abdeckungcover
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9630036T SI0729209T1 (en) | 1995-02-23 | 1996-02-09 | Device for indicating a defective state of an electric apparatus, especially a surge arrester |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19506307 | 1995-02-23 | ||
DE19506307A DE19506307A1 (en) | 1995-02-23 | 1995-02-23 | Device for indicating a faulty state of an electrical apparatus, in particular a surge arrester |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0729209A1 true EP0729209A1 (en) | 1996-08-28 |
EP0729209B1 EP0729209B1 (en) | 1998-09-02 |
Family
ID=7754838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96810083A Expired - Lifetime EP0729209B1 (en) | 1995-02-23 | 1996-02-09 | Device for indicating a defective state of an electric apparatus, especially a surge arrester |
Country Status (15)
Country | Link |
---|---|
US (1) | US5650772A (en) |
EP (1) | EP0729209B1 (en) |
JP (1) | JP3663250B2 (en) |
KR (1) | KR100353660B1 (en) |
CN (1) | CN1050706C (en) |
AU (1) | AU700660B2 (en) |
BR (1) | BR9600783A (en) |
CA (1) | CA2160421C (en) |
CZ (1) | CZ286499B6 (en) |
DE (2) | DE19506307A1 (en) |
ES (1) | ES2124074T3 (en) |
PL (1) | PL179117B1 (en) |
RU (1) | RU2158460C2 (en) |
SI (1) | SI0729209T1 (en) |
SK (1) | SK280437B6 (en) |
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WO1999008292A1 (en) * | 1997-08-11 | 1999-02-18 | Chengeta, Cuthbert | Lightning arrestor |
EP0915544A1 (en) * | 1997-11-08 | 1999-05-12 | Asea Brown Boveri AG | Electric apparatus, particularly a surge arrester, with a fault current indicating device |
EP1231686A1 (en) * | 2001-02-07 | 2002-08-14 | Siemens Aktiengesellschaft | Signalling means for indicating triggering of an overvoltage arrester |
WO2019243030A1 (en) | 2018-06-18 | 2019-12-26 | Siemens Aktiengesellschaft | Disconnecting device for a surge arrester |
EP3293839B1 (en) * | 2016-09-13 | 2024-05-22 | Hitachi Energy Ltd | Protection of a surge arrester with a better protection against failure from thermal overload in case of a temporary overvoltage in an electrical grid line |
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Publication number | Priority date | Publication date | Assignee | Title |
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US6031368A (en) * | 1996-09-12 | 2000-02-29 | S&C Electric Company | Sensing apparatus for cable termination devices in power distribution systems |
DE19637984A1 (en) * | 1996-09-18 | 1998-03-19 | Asea Brown Boveri | Electrical apparatus, in particular surge arrester and system for displaying the state of this apparatus in a central evaluation device |
KR100660627B1 (en) | 2005-02-28 | 2006-12-22 | 강영길 | The defect indicator for a lightning rod device |
KR101047879B1 (en) * | 2008-07-21 | 2011-07-08 | 한국전력공사 | Built-in charging unit for power equipment |
DE102010047244A1 (en) * | 2010-10-04 | 2012-04-05 | Phoenix Contact Gmbh & Co. Kg | Surge protector |
ES2907128T3 (en) * | 2016-02-29 | 2022-04-22 | Hitachi Energy Switzerland Ag | Disconnecting device for overvoltage arrester and protection assembly comprising an overvoltage arrester connected to said disconnecting device |
EP3513468B1 (en) * | 2016-09-13 | 2020-07-15 | ABB Power Grids Switzerland AG | Disconnector device for a surge arrester and a protection assembly comprising a surge arrester connected to such a disconnector device |
WO2020223348A1 (en) | 2019-04-29 | 2020-11-05 | Hubbell Incorporated | Disconnector device and overvoltage protection assembly including the same |
DE102019207465A1 (en) | 2019-05-22 | 2020-11-26 | Siemens Aktiengesellschaft | Disconnection device for a surge arrester and arrangement |
DE102020215914A1 (en) | 2020-12-15 | 2022-06-15 | Siemens Energy Global GmbH & Co. KG | Fuse arrangement of a surge arrester indicator |
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WO1993001641A1 (en) * | 1991-07-10 | 1993-01-21 | Joslyn Corporation | High voltage surge arrester with failed surge arrester signaling device |
EP0564334A1 (en) * | 1992-03-30 | 1993-10-06 | Sediver, Societe Europeenne D'isolateurs En Verre Et Composite | Device for detecting and indicating a fault current in an arrester or insulator |
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US5341271A (en) * | 1992-06-22 | 1994-08-23 | Minnesota Mining And Manufacturing Company | Surge arrester fault indicator |
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- 1995-02-23 DE DE19506307A patent/DE19506307A1/en not_active Withdrawn
- 1995-10-12 CA CA002160421A patent/CA2160421C/en not_active Expired - Fee Related
- 1995-10-30 KR KR1019950038193A patent/KR100353660B1/en not_active IP Right Cessation
- 1995-11-03 US US08/552,953 patent/US5650772A/en not_active Expired - Fee Related
-
1996
- 1996-01-31 CN CN96101437A patent/CN1050706C/en not_active Expired - Fee Related
- 1996-02-09 ES ES96810083T patent/ES2124074T3/en not_active Expired - Lifetime
- 1996-02-09 AU AU44456/96A patent/AU700660B2/en not_active Ceased
- 1996-02-09 SI SI9630036T patent/SI0729209T1/en not_active IP Right Cessation
- 1996-02-09 DE DE59600489T patent/DE59600489D1/en not_active Expired - Fee Related
- 1996-02-09 EP EP96810083A patent/EP0729209B1/en not_active Expired - Lifetime
- 1996-02-21 PL PL96312880A patent/PL179117B1/en not_active IP Right Cessation
- 1996-02-22 BR BR9600783-4A patent/BR9600783A/en not_active IP Right Cessation
- 1996-02-22 RU RU96103663/09A patent/RU2158460C2/en not_active IP Right Cessation
- 1996-02-22 CZ CZ1996536A patent/CZ286499B6/en not_active IP Right Cessation
- 1996-02-22 SK SK233-96A patent/SK280437B6/en unknown
- 1996-02-23 JP JP03690496A patent/JP3663250B2/en not_active Expired - Fee Related
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FR1122257A (en) * | 1955-02-01 | 1956-09-04 | Electrical protection device | |
WO1993001641A1 (en) * | 1991-07-10 | 1993-01-21 | Joslyn Corporation | High voltage surge arrester with failed surge arrester signaling device |
EP0564334A1 (en) * | 1992-03-30 | 1993-10-06 | Sediver, Societe Europeenne D'isolateurs En Verre Et Composite | Device for detecting and indicating a fault current in an arrester or insulator |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999008292A1 (en) * | 1997-08-11 | 1999-02-18 | Chengeta, Cuthbert | Lightning arrestor |
EP0915544A1 (en) * | 1997-11-08 | 1999-05-12 | Asea Brown Boveri AG | Electric apparatus, particularly a surge arrester, with a fault current indicating device |
EP1231686A1 (en) * | 2001-02-07 | 2002-08-14 | Siemens Aktiengesellschaft | Signalling means for indicating triggering of an overvoltage arrester |
EP3293839B1 (en) * | 2016-09-13 | 2024-05-22 | Hitachi Energy Ltd | Protection of a surge arrester with a better protection against failure from thermal overload in case of a temporary overvoltage in an electrical grid line |
WO2019243030A1 (en) | 2018-06-18 | 2019-12-26 | Siemens Aktiengesellschaft | Disconnecting device for a surge arrester |
Also Published As
Publication number | Publication date |
---|---|
DE19506307A1 (en) | 1996-08-29 |
JP3663250B2 (en) | 2005-06-22 |
BR9600783A (en) | 1999-10-13 |
CZ286499B6 (en) | 2000-04-12 |
EP0729209B1 (en) | 1998-09-02 |
CN1050706C (en) | 2000-03-22 |
CZ53696A3 (en) | 1996-09-11 |
CA2160421C (en) | 2004-09-07 |
KR100353660B1 (en) | 2002-12-18 |
CA2160421A1 (en) | 1996-08-24 |
JPH08255665A (en) | 1996-10-01 |
CN1135109A (en) | 1996-11-06 |
PL179117B1 (en) | 2000-07-31 |
AU700660B2 (en) | 1999-01-14 |
KR960032827A (en) | 1996-09-17 |
DE59600489D1 (en) | 1998-10-08 |
SK23396A3 (en) | 1997-02-05 |
ES2124074T3 (en) | 1999-01-16 |
SK280437B6 (en) | 2000-02-14 |
US5650772A (en) | 1997-07-22 |
SI0729209T1 (en) | 1999-04-30 |
AU4445696A (en) | 1996-08-29 |
PL312880A1 (en) | 1996-09-02 |
RU2158460C2 (en) | 2000-10-27 |
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