EP0689727A1 - OUTDOOR SHORT CIRCUIT BREAKER - Google Patents

OUTDOOR SHORT CIRCUIT BREAKER

Info

Publication number
EP0689727A1
EP0689727A1 EP94908274A EP94908274A EP0689727A1 EP 0689727 A1 EP0689727 A1 EP 0689727A1 EP 94908274 A EP94908274 A EP 94908274A EP 94908274 A EP94908274 A EP 94908274A EP 0689727 A1 EP0689727 A1 EP 0689727A1
Authority
EP
European Patent Office
Prior art keywords
spring clip
connecting wire
electrode
surge arrester
tabs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94908274A
Other languages
German (de)
French (fr)
Other versions
EP0689727B1 (en
Inventor
Gerhard Lange
Thomas Westebbe
Michael Bluhm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to DE9421824U priority Critical patent/DE9421824U1/en
Publication of EP0689727A1 publication Critical patent/EP0689727A1/en
Application granted granted Critical
Publication of EP0689727B1 publication Critical patent/EP0689727B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure

Definitions

  • the invention is in the field of electrical components and can be used in the structural design of a gas-filled three-electrode surge arrester which is provided with an external short-circuit device.
  • a short-circuit device serves to protect the surge arrester against long-term loads;
  • Such a short-circuit device generally contains a construction element that can be melted at higher temperatures, with the aid of which the center electrode and one or both end electrodes are short-circuited.
  • a ring-like spring is clamped onto the central electrode and is provided with lateral arms. These two arms protrude up to the two end electrodes and are kept at a distance from the end electrodes by an insulating washer which is arranged between the center electrode and the spring.
  • the insulating washer is made of a heat-fusible material, so that the insulating washer melts in the event of long-term exposure and the ends of the two arms come into contact with the two end electrodes (US Pat. No. 4,984,125).
  • a two-armed spring clip is fastened centrally to the center electrode.
  • the two free ends of the arms of this spring clip lie isolated on the circumference of the end electrodes.
  • the spring clip serves both to design a short-circuit device and to design air spark gaps connected in parallel.
  • At the ends of the two arms of the spring clip there is an approximately 20 to 40 ⁇ m thick insulating layer for example, polyurethane paint applied.
  • the central part of the spring clip is connected to the radially projecting connecting wire of the central electrode (US Pat. No. 4,912,592).
  • a spring clip is also provided as an external short-circuit device.
  • the arms of the spring clip protrude axially from the end electrodes of the arrester and their ends lie against the end electrodes, ie axially, with the interposition of an insulating film.
  • this is provided in the middle with an opening in the form of an H-shaped punching, between the tabs of which the connecting wire of the center electrode is guided.
  • the spring clip is fixed to the connecting wire in the pretensioned state by means of the resilient tabs (WO 90/13904).
  • the invention has for its object to choose the design of the spring clip so that it can be easily assembled and that a safe contact to the Endl electrodes is guaranteed.
  • the spring clip is arched in such a roof-like manner and that the two arms of the spring clip enclose an obtuse angle between them and rest on the peripheral edge of the respective end electrode.
  • the spring clip can be provided with a sufficiently large pretension. Since the arms of the spring clip rest on the end electrodes in a punctiform manner, the insulating layer ensures a safe contact.
  • the security for a point-like seating can be increased by the fact that two tabs abutting the peripheral edge of the respective end electrode are formed at the ends of the arms of the spring hanger. This also ensures that the spring clip is secured against rotation.
  • Such a configuration of the spring clip is particularly suitable for those conductors in which the connecting wires of all electrodes run radially in the same direction.
  • the curvature of the spring clip is appropriately "" chosen so that the arms enclose an obtuse angle of about 110-150 'between them in the untensioned state.
  • the spring clip can be fixed to the center electrode or to its connecting wire or connecting pin in a simple manner in a material or, in particular, form-fitting manner.
  • the fixing also occurs with the aid of a the connecting wire of the center electrode pushed onto the crimp socket.
  • the spring clip is likewise provided with a bore in the area of the curvature and is fixed in the pretensioned state by means of the crimping bush.
  • the spring clip in the region of its curvature to form two resilient tabs with an H-shaped punch-out, the distance between the two tabs being smaller than the diameter of the connecting wire of the central electrode, and the spring clip using these tabs to clamp on the connecting wire in the pretensioned state.
  • an artificial drops of cloth or a drop of soft solder are deposited on one or both tabs at the point of contact with the connecting wire.
  • Figures 1 to 7 Three embodiments of the invention are shown in Figures 1 to 7.
  • Figures 1 and 2 show two views of a three-electrode
  • FIGS. 3 and 4 in two views a spring clip with
  • FIGS. 5 and 6 show a three-electrode arrester with a short-circuiting device, in which the connecting wires of the electrodes protrude radially in the same direction, and FIG. 7 shows an alternative fastening of the spring clip to the connecting wire.
  • the surge arrester according to FIGS. 1 and 2 consists in a known manner of the two end electrodes 1 and 2, the center electrode 3 and the two ceramic insulating bodies 4 and 5, which keep the electrodes at a distance.
  • the connecting wire 6, which protrudes radially upward, is welded to the center electrode.
  • the connecting wires 7 and 8, which run radially downward, are welded to the side of the two end electrodes 4 and 5.
  • the surge arrester is further provided with an external short-circuit device, which consists of the spring clip 20 and an insulating film 21 arranged between the spring clip and the end electrodes 1 and 2.
  • an external short-circuit device which consists of the spring clip 20 and an insulating film 21 arranged between the spring clip and the end electrodes 1 and 2.
  • a metal strip 20 is used to form the spring clip 20, which is provided with a centrally arranged, H-shaped, punched-out stamping 21.
  • tabs 22 and 23 are formed, the spacing A of which is smaller than the diameter D of the connecting wire 6 of the center electrode.
  • the sheet metal strip 20 according to FIG. 3 is bent according to FIG. 4 to form the spring clip in such a way that a roof-shaped curvature 24 is created.
  • the two arms 25 and 26 of the spring clip enclose an angle alpha of approximately 120 ⁇ .
  • the tabs 22 and 23 are elastically bent out of their rest position.
  • the edges of the tabs dig into the surface of the connecting wire 6, as a result of which the spring clip is fixed in a certain position in which the ends of the arms 25, 26 are under prestress.
  • the amount of preload depends on how far the spring clip with its curvature towards the
  • the spring clip can be secured against rotation by a soft solder drop or a plastic drop that is applied at the point of contact of the tabs with the connecting wire.
  • the connecting wire 6 for the central electrode and the connecting wires 9 and 10 for the end electrodes run radially in the same direction. So that in this case the spring belt 27 does not touch the connecting wires 9 and 10, its ends are provided with a cutout, as shown in FIG. 6. As a result, two tabs 28 and 29 are formed, which on the circumferential edge of the respective end electrode 1, 2 point to point. This configuration also represents an anti-rotation device.
  • FIG. 7 shows the fixing of a spring clip 30 to the connecting wire 6 by means of a crimp bushing 31, the spring clip being provided with a bore in the region of its curvature.

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  • Thermistors And Varistors (AREA)
  • Fuses (AREA)

Abstract

In a three-electrode surge arrester, the central electrode (3) of which has a radially projecting connecting wire (6) and is fitted with an external short-circuit device, the latter consists of a two-armed sprung bracket (20), the arms of which project axially beyond the free ends of the end electrodes and, with the interposition of an insulating foil (21), lie on the peripheral edge of the end electrodes (1, 2). The sprung bracket (24) has a roof-shaped curve (24) and an aperture in the region of said curve for securing the sprung bracket to the connecting wire (6) of the central electrode (3).

Description

Überspannungsabieiter mit äußerer KurzschlußeinrichtungSurge arrester with external short-circuit device

Die Erfindung liegt auf dem Gebiet der elektrischen Bauele¬ mente und ist bei der konstruktiven Ausgestaltung eines gasgefüllten Drei-Elektroden-Überspannungsableiters anzu¬ wenden, der mit einer äußeren Kurzschlußeinrichtung ver¬ sehen ist. Eine derartige Kurzschlußeinrichtung dient dem Schutz des Überspannungsabieiters bei Langzeitbelastungen; eine solche Kurzschlußeinrichtung enthält in aller Regel ein bei höheren Temperaturen schmelzbares Konstruktioπsele- ment mit dessen Hilfe die Mittelelektrode und eine oder beide Endelektroden kurzgeschlossen werden.The invention is in the field of electrical components and can be used in the structural design of a gas-filled three-electrode surge arrester which is provided with an external short-circuit device. Such a short-circuit device serves to protect the surge arrester against long-term loads; Such a short-circuit device generally contains a construction element that can be melted at higher temperatures, with the aid of which the center electrode and one or both end electrodes are short-circuited.

Bei einem bekannten Drei-Elektrodenableiter dieser Art ist auf die Mittelelektrode eine ringartige Feder aufgeklemmt, die mit seitlichen Armen versehen ist. Diese beiden Arme ragen bis zu den beiden Endelektroden und werden durch eine Isolierscheibe, die zwischen der Mittelelektrode und der Feder angeordnet ist, auf Abstand zu den Endelektroden gehalten. Die Isolierscheibe besteht aus einem in der Wärme schmelzbaren Material, so daß bei einer Langzeitbelastung die Isolierscheibe schmilzt und dadurch die Enden der beiden Arme in Kontakt mit den beiden Endelektroden kommen (US-PS 4 984 125).In a known three-electrode arrester of this type, a ring-like spring is clamped onto the central electrode and is provided with lateral arms. These two arms protrude up to the two end electrodes and are kept at a distance from the end electrodes by an insulating washer which is arranged between the center electrode and the spring. The insulating washer is made of a heat-fusible material, so that the insulating washer melts in the event of long-term exposure and the ends of the two arms come into contact with the two end electrodes (US Pat. No. 4,984,125).

Bei einem anderen bekannten Überspannungsabieiter ist ein zweiarmiger Federbügel mittig an der Mittelelektrode be¬ festigt. Die beiden freien Enden der Arme dieses Federbü¬ gels liegen isoliert am Umfang der Endelektroden auf. Bei diesem Überspannungsabieiter dient der Federbügel sowohl zur Gestaltung einer Kurzschlußeinrichtung als auch zur Gestaltung von parallel geschalteten Luftfunkenstrecken. Hierbei ist an den Enden der beiden Arme des Federbügels jeweils eine etwa 20 bis 40 μm dicke Isolierschicht aus beispielsweise Polyurethanlack aufgebracht. Das Mittelteil des Federbügels ist mit dem radial abstehenden Anschlu߬ draht der Mittelelektrode verbunden (US-PS 4 912 592).In another known surge arrester, a two-armed spring clip is fastened centrally to the center electrode. The two free ends of the arms of this spring clip lie isolated on the circumference of the end electrodes. In this surge arrester, the spring clip serves both to design a short-circuit device and to design air spark gaps connected in parallel. At the ends of the two arms of the spring clip there is an approximately 20 to 40 μm thick insulating layer for example, polyurethane paint applied. The central part of the spring clip is connected to the radially projecting connecting wire of the central electrode (US Pat. No. 4,912,592).

Bei einem weiterhin bekannten Überspannungsabieiter ist als äußere Kurzschlußeinrichtung ebenfalls ein Federbügel vorgesehen. Die Arme des Federbügels überragen dabei in Achsrichtung die Endelektroden des Abieiters und liegen mit ihren Enden an den Endelektroden unter Zwischenschal- tung einer Isolierfolie stirnseitig, also axial an. Zur Fixierung des flügelartig ausgebildeten Federbügels ist dieser in der Mitte mit einer Durchbrechung in Form einer H-förmigen Ausstanzung versehen, zwischen deren Lappen der Anschlußdraht der Mittelelektrode geführt ist. Mittels der federnden Lappen wird der Federbügel im vorgespannten Zu¬ stand am Anschlußdraht fixiert (WO 90/13904).In a further known surge arrester, a spring clip is also provided as an external short-circuit device. The arms of the spring clip protrude axially from the end electrodes of the arrester and their ends lie against the end electrodes, ie axially, with the interposition of an insulating film. To fix the wing-like spring clip, this is provided in the middle with an opening in the form of an H-shaped punching, between the tabs of which the connecting wire of the center electrode is guided. The spring clip is fixed to the connecting wire in the pretensioned state by means of the resilient tabs (WO 90/13904).

Ausgehend von einem gasgefüllten Überspannungsabieiter mit den Merkmalen des Oberbegriffes des Patentanspruches 1 liegt der Erfindung die Aufgabe zugrunde, die konstruktive Ausgestaltung des Federbügels so zu wählen, daß er sich leicht montieren laßt und daß eine sichere Kontaktagabe zu den Endlelektroden gewährleistet ist.Starting from a gas-filled surge arrester with the features of the preamble of claim 1, the invention has for its object to choose the design of the spring clip so that it can be easily assembled and that a safe contact to the Endl electrodes is guaranteed.

Zur Lösung dieser Aufgabe ist gemäß der Erfindung vorge¬ sehen, daß der Federbügel derart dachartig gewölbt ist und daß die beiden Arme des Federbügels zwischen sich einen stumpfen Winkel einschließen und an der umlaufenden Kante der jeweiligen Endelektrode anliegen.To achieve this object it is provided according to the invention that the spring clip is arched in such a roof-like manner and that the two arms of the spring clip enclose an obtuse angle between them and rest on the peripheral edge of the respective end electrode.

Bei einer derart ausgebildeten äußeren Kurzschlußeinrich¬ tung läßt sich der Federbügel mit genügend großer Vorspan¬ nung versehen. Da die Arme des Federbügels punktformig auf den Endelektroden aufsetzen, ist beim Schmelzen der Isolier- schicht eine sichere Kontaktgabe gewährleistet.In the case of an external short-circuit device designed in this way, the spring clip can be provided with a sufficiently large pretension. Since the arms of the spring clip rest on the end electrodes in a punctiform manner, the insulating layer ensures a safe contact.

Die Sicherheit für ein punktförmiges Aufsitzen kann da¬ durch erhöht werden, daß an den Enden der Arme des Feder- bügeis jeweils zwei an der umlaufenden Kante der jeweili¬ gen Endelektrode anliegende Laschen gebildet werden. Da¬ durch ist zugleich eine Verdrehsicherung für den Federbü¬ gel gegeben. Eine solche Ausgestaltung des Federbügels ist besonders für solche Abieiter geeignet, bei denen die An- schlußdrähte aller Elektroden radial in der gleichen Rich¬ tung verlaufen. - Die Wölbung des Federbügels ist zweck-"" mäßig so gewählt, daß die Arme im nichtgespannten Zustand zwischen sich einen stumpfen Winkel von etwa 110 - 150 ' einschließen. - Die Fixierung des Federbügels an der Mit- telelektrode bzw. an deren Anschlußdraht oder Anschlußstift kann dabei auf einfache Weise stoff- oder insbesondere formschlüssig erfolgen. Neben einer Lötverbindung, bei der der Federbügel im Bereich der Wölbung mit einer in ihrem Durchmesser dem Durchmesser des Anschlußdrahtes entsprechen- den Bohrung versehen und mittels einer Weichlötung am An¬ schlußdraht der Mittelelektrode im vorgespannten Zustand fixiert ist, kommt auch die Fixierung mit Hilfe einer auf den Anschlußdraht der Mittelelektrode aufgeschobenen Quetschbuchse in Betracht. Hierbei ist der Federbügel im Bereich der Wölbung ebenfalls mit einer Bohrung versehen und wird im vorgespannten Zustand mittels der Quetsch¬ buchse fixiert. Montagetechnisch besonders günstig ist es, den Federbügel im Bereich seiner Wölbung zur Bildung zweier federnder Lappen mit einer H-förmigen Ausstanzung zu versehen, wobei der Abstand der beiden Lappen kleiner als der Durchmesser des Anschlußdrahtes der Mittelelektro¬ de ist, und den Federbügel mittels dieser Lappen auf dem Anschlußdraht im vorgespannten Zustand festzuklemmen. Als Verdrehsicherung für den Federbügel kann hierbei ein Kunst- stofftropfen oder ein Weichlottropfen auf eine oder beide Lappen an der Berührungsstelle mit dem Anschlußdraht abge¬ setzt werden.The security for a point-like seating can be increased by the fact that two tabs abutting the peripheral edge of the respective end electrode are formed at the ends of the arms of the spring hanger. This also ensures that the spring clip is secured against rotation. Such a configuration of the spring clip is particularly suitable for those conductors in which the connecting wires of all electrodes run radially in the same direction. - The curvature of the spring clip is appropriately "" chosen so that the arms enclose an obtuse angle of about 110-150 'between them in the untensioned state. - The spring clip can be fixed to the center electrode or to its connecting wire or connecting pin in a simple manner in a material or, in particular, form-fitting manner. In addition to a soldered connection, in which the spring clip in the region of the arch is provided with a bore corresponding in diameter to the diameter of the connecting wire and is fixed in the pretensioned state by means of soft soldering on the connecting wire of the central electrode, the fixing also occurs with the aid of a the connecting wire of the center electrode pushed onto the crimp socket. Here, the spring clip is likewise provided with a bore in the area of the curvature and is fixed in the pretensioned state by means of the crimping bush. In terms of assembly technology, it is particularly expedient to provide the spring clip in the region of its curvature to form two resilient tabs with an H-shaped punch-out, the distance between the two tabs being smaller than the diameter of the connecting wire of the central electrode, and the spring clip using these tabs to clamp on the connecting wire in the pretensioned state. To prevent rotation of the spring clip, an artificial drops of cloth or a drop of soft solder are deposited on one or both tabs at the point of contact with the connecting wire.

Drei Ausführungsbeispiele der Erfindung sind in den Figuren 1 bis 7 dargestellt. Dabei zeigen die Figuren 1 und 2 in zwei Ansichten einen Drei-Elektroden-Three embodiments of the invention are shown in Figures 1 to 7. Figures 1 and 2 show two views of a three-electrode

Überspannungsableiter mit aufgesetzter Kurz¬ schlußeinrichtung, wobei der Anschlußdraht der Mittelelektrode radial entgegengesetzt zu den Anschlußdrähten der Endelektroden angeordnet ist, die Figuren 3 und 4 in zwei Ansichten einen Federbügel mitSurge arrester with attached short-circuit device, the connecting wire of the center electrode being arranged radially opposite to the connecting wires of the end electrodes, FIGS. 3 and 4 in two views a spring clip with

H-förmiger Ausstanzung, Figuren 5 und 6 einen Drei-Elektrodenableiter mit Kurz¬ schlußeinrichtung, bei dem die Anschlu߬ drähte der Elektroden radial in der gleichen Richtung abstehen, und Figur 7 eine alternative Befestigung des Federbü- gels am Anschlußdraht.H-shaped cut-out, FIGS. 5 and 6 show a three-electrode arrester with a short-circuiting device, in which the connecting wires of the electrodes protrude radially in the same direction, and FIG. 7 shows an alternative fastening of the spring clip to the connecting wire.

Der Uberspannungsableiter gemäß den Figuren 1 und 2 besteht in bekannter Weise aus den beiden Endelektroden 1 und 2, der Mittelelektrode 3 und den beiden keramischen Isolier- körpern 4 und 5, die die Elektroden auf Abstand halten. An die Mittelelektrode ist der Anschlußdraht 6 angeschweißt, der radial nach oben absteht. An die beiden Endelektroden 4 und 5 sind seitlich die Anchlußdrähte 7 und 8 ange¬ schweißt, die radial nach unten verlaufen.The surge arrester according to FIGS. 1 and 2 consists in a known manner of the two end electrodes 1 and 2, the center electrode 3 and the two ceramic insulating bodies 4 and 5, which keep the electrodes at a distance. The connecting wire 6, which protrudes radially upward, is welded to the center electrode. The connecting wires 7 and 8, which run radially downward, are welded to the side of the two end electrodes 4 and 5.

Der Uberspannungsableiter ist weiterhin mit einer äußeren Kurzschlußeinrichtung versehen, die aus dem Federbügel 20 und einer zwischen dem Federbügel und den Endelektroden 1 und 2 angeordneten Isolierfolie 21 besteht. Zur Bildung des Federbügels 20 dient gemäß Figur 3 ein Blechstreifen 20, der mit einer mittig angeordneten, H- förmig symmetrisch ausgebildeten Ausstanzung 21 versehen ist. Durch diese Ausstanzung werden Lappen 22 und 23 ge- bildet, deren Abstand A kleiner als der Durchmesser D des Anschlußdrahtes 6 der Mittelelektrode ist. - Der Blech¬ streifen 20 gemäß Figur 3 ist gemäß Figur 4 zur Bildung des Federbügels derart gebogen, daß eine dachförmige Wöl¬ bung 24 entsteht. Die beiden Arme 25 und 26 des Federbü- gels schließen dabei einen Winkel alpha von etwa 120 β ein.The surge arrester is further provided with an external short-circuit device, which consists of the spring clip 20 and an insulating film 21 arranged between the spring clip and the end electrodes 1 and 2. According to FIG. 3, a metal strip 20 is used to form the spring clip 20, which is provided with a centrally arranged, H-shaped, punched-out stamping 21. As a result of this punching out, tabs 22 and 23 are formed, the spacing A of which is smaller than the diameter D of the connecting wire 6 of the center electrode. The sheet metal strip 20 according to FIG. 3 is bent according to FIG. 4 to form the spring clip in such a way that a roof-shaped curvature 24 is created. The two arms 25 and 26 of the spring clip enclose an angle alpha of approximately 120 β .

Beim Aufsetzen des Federbügels 20 auf den Anschlußdraht 6 werden die Lappen 22 und 23 aus ihrer Ruhelage elastisch ausgebogen. Dabei graben sich die Kanten der Lappen in die Oberfläche des Anschlußdrahtes 6 ein, wodurch der Feder¬ bügel in einer bestimmten Position, in welcher die Enden der Arme 25,26 unter einer Vorspannung stehen, fixiert wird. Das Maß der Vorspannung hängt dabei davon ab, wie weit der Federbügel mit seiner Wölbung in Richtung auf dieWhen the spring clip 20 is placed on the connecting wire 6, the tabs 22 and 23 are elastically bent out of their rest position. The edges of the tabs dig into the surface of the connecting wire 6, as a result of which the spring clip is fixed in a certain position in which the ends of the arms 25, 26 are under prestress. The amount of preload depends on how far the spring clip with its curvature towards the

Mittelelektrode gedrückt wird. - In der gewünschten Position kann der Federbügel durch einen Weichlottropfen oder einen Kunststofftropfen, der an der Berührungsstelle der Lappen mit dem Anschlußdraht aufgebracht wird, gegen Verdrehung gesichert werden.Center electrode is pressed. - In the desired position, the spring clip can be secured against rotation by a soft solder drop or a plastic drop that is applied at the point of contact of the tabs with the connecting wire.

Bei dem Uberspannungsableiter gemäß Figur 5 verlaufen der Anschlußdraht 6 für die Mittelelektrode und die Anschlu߬ drähte 9 und 10 für die Endelektroden radial in der glei- chen Richtung. Damit in diesem Fall der Federgübel 27 nicht die Anschlußdrähte 9 und 10 berührt, sind - gemäß Figur 6 - dessen Enden mit einer Aussparung versehen. Da¬ durch werden jeweils zwei Lappen 28 und 29 gebildet, die an der umlaufenden Kante der jeweiligen Endelektrode 1,2 punktformig anliegen. Diese Ausgestaltung stellt zugleich eine Verdrehsicherung dar.5, the connecting wire 6 for the central electrode and the connecting wires 9 and 10 for the end electrodes run radially in the same direction. So that in this case the spring belt 27 does not touch the connecting wires 9 and 10, its ends are provided with a cutout, as shown in FIG. 6. As a result, two tabs 28 and 29 are formed, which on the circumferential edge of the respective end electrode 1, 2 point to point. This configuration also represents an anti-rotation device.

Figur 7 zeigt die Fixierung eines Federbügels 30 am An¬ schlußdraht 6 mittels einer Quetschbuchse 31, wobei der Federbügel im Bereich seiner Wölbung mit einer Bohrung versehen ist. FIG. 7 shows the fixing of a spring clip 30 to the connecting wire 6 by means of a crimp bushing 31, the spring clip being provided with a bore in the region of its curvature.

Claims

Patentansprüche Claims 1. Gasgefüllter Uberspannungsableiter mit zwei sich axial gegenüberstehenden zylindrischen Endelektroden, einer ringförmigen Mittelelektrode und zwei zwischen den Elektroden angeordneten hohlzylindrischen Isolierkörpern sowie mit einer an der Mittelelektrode befestigten äußeren Kurzschlu߬ einrichtung in Form eines sich in Achsrichtung erstrecken¬ den zweiarmigen Federbügels, dessen freie Enden die End- elektroden axial überragen und unter Zwischenschaltung einer Isolierschicht an den Endelektroden anliegen, wobei die Mittelelektrode mit einem radial abstehenden An¬ schlußdraht versehen ist und der Federbügel (20) in seiner Mitte eine Durchbrechung (21) aufweist,, durch die der Anschlußdraht (6) der Mittelelektrode (3) geführt ist, so daß der Federbügel (20) im vorgespannten Zustand am Anschlußdraht (3) fixiert ist, d a d u r c h g e k e n n z e i c h n e t , daß der Federbügel (20) derart dachartig gewölbt ist, daß die beiden Arme (25,26) des Federbügels zwischen sich einen stumpfen Winkel (alpha) einschließen und an der um¬ laufenden Kante der jeweiligen Endelektrode (5,6) anliegen.1. Gas-filled surge arrester with two axially opposed cylindrical end electrodes, an annular central electrode and two hollow cylindrical insulating bodies arranged between the electrodes, and with an outer short-circuit device attached to the central electrode in the form of an axially extending two-armed spring clip, the free ends of which are the Axially protrude from the end electrodes and rest against the end electrodes with the interposition of an insulating layer, the center electrode being provided with a radially projecting connecting wire and the spring clip (20) having an opening (21) in its center through which the connecting wire (6 ) The center electrode (3) is guided so that the spring clip (20) is fixed in the pretensioned state on the connecting wire (3), characterized in that the spring clip (20) is arched such that the two arms (25, 26) of the Spring clip between en enclose an obtuse angle (alpha) and rest on the circumferential edge of the respective end electrode (5, 6). 2. Uberspannungsableiter nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß an den Enden des Federbügels (27) jeweils zwei an der umlaufenden Kante der jeweiligen Endelektrode anliegende Laschen (28,29) gebildet sind.2. Surge arrester according to claim 1, d a d u r c h g e k e n n z e i c h n e t that at the ends of the spring clip (27) two tabs (28, 29) resting on the peripheral edge of the respective end electrode are formed. 3. Uberspannungsableiter nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , daß der Federbügel (30) im Bereich der Wölbung mit einer Bohrung versehen und mittels einer auf den Anschlußdraht (6) der Mittelelektrode aufgeschobenen Quetschbuchse (31) im vorgespannten Zustand fixiert ist.3. Surge arrester according to claim 1 or 2, characterized in that the spring clip (30) is provided with a bore in the region of the curvature and by means of a crimp socket (31) pushed onto the connecting wire (6) of the central electrode. is fixed in the prestressed state. 4. Uberspannungsableiter nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , daß der Federbügel im Bereich der Wölbung mit einer in ihrem Durchmesser dem Durchmesser des Anschlußdrahtes (6) entsprechenden Bohrung versehen und mittels einer Weich- lötung am Anschlußdraht der Mittelelektrode im vorge¬ spannten Zustand fixiert ist.4. Surge arrester according to claim 1 or 2, characterized in that the spring clip in the region of the curvature with a diameter corresponding to the diameter of the connecting wire (6) is provided and is fixed by means of soft soldering on the connecting wire of the central electrode in the pretensioned state . 5. Uberspannungsableiter nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , daß der Federbügel (20) im Bereich seiner Wölbung (24) zur Bildung zweier federnder Lappen (22,23) mit einer H-förmi- gen Ausstanzung (21) versehen ist, wobei der Abstand (A) der beiden Lappen kleiner als der Durchmesser (D) des Anschlußdrahtes (6) der Mittelelektrode (3) ist, und daß der Federbügel (20) mittels dieser Lappen (22,23) auf dem Anschlußdraht (6) im vorgespannten Zustand fest- geklemmt ist und die Lappen (22,23) am Anschlußdraht (6) stoffschlüssig fixiert sind.5. surge arrester according to claim 1 or 2, characterized in that the spring clip (20) in the region of its curvature (24) to form two resilient tabs (22, 23) with an H-shaped punching (21) is provided, the Distance (A) of the two tabs is smaller than the diameter (D) of the connecting wire (6) of the center electrode (3), and that the spring clip (20) by means of these tabs (22, 23) on the connecting wire (6) in the pretensioned state is clamped and the tabs (22, 23) are firmly bonded to the connecting wire (6). 6. Uberspannungsableiter nach einem der Ansprüche 1 bis 5, d a d u r c h g e k e n n z e i c h n e t , daß zwischen dem Federbügel (20) und den Endelektroden (1,2) eine Isolierfolie (21) angeordnet ist. 6. surge arrester according to one of claims 1 to 5, d a d u r c h g e k e n n z e i c h n e t that an insulating film (21) is arranged between the spring clip (20) and the end electrodes (1,2).
EP94908274A 1993-03-17 1994-02-25 Surge arrester with short-circuit device Expired - Lifetime EP0689727B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9421824U DE9421824U1 (en) 1993-03-17 1994-02-25 Surge arrester with external short-circuit device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4309331A DE4309331A1 (en) 1993-03-17 1993-03-17 Surge arrester with external short-circuit device
DE4309331 1993-03-17
PCT/DE1994/000217 WO1994022191A1 (en) 1993-03-17 1994-02-25 Surge arrester with short-circuit device

Publications (2)

Publication Number Publication Date
EP0689727A1 true EP0689727A1 (en) 1996-01-03
EP0689727B1 EP0689727B1 (en) 1997-07-09

Family

ID=6483576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94908274A Expired - Lifetime EP0689727B1 (en) 1993-03-17 1994-02-25 Surge arrester with short-circuit device

Country Status (6)

Country Link
US (1) US5644465A (en)
EP (1) EP0689727B1 (en)
CN (1) CN1042878C (en)
DE (2) DE4309331A1 (en)
ES (1) ES2105657T3 (en)
WO (1) WO1994022191A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19622461B4 (en) * 1996-05-24 2005-04-21 Epcos Ag Gas-filled surge arrester with external short-circuit device
DE19708651A1 (en) * 1997-02-21 1998-09-03 Siemens Ag Gas-filled surge arrester with external short-circuit device
EP1916875B1 (en) * 2005-09-23 2010-11-24 Eberspächer catem GmbH & Co. KG Heating element of a heating device
US7974063B2 (en) * 2007-11-16 2011-07-05 Corning Cable Systems, Llc Hybrid surge protector for a network interface device
DE102008062491A1 (en) * 2008-12-16 2010-06-17 Epcos Ag Surge arrester with a short-circuit device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN170586B (en) * 1987-01-07 1992-04-18 Samhwa Electric Ind Co
GB2205992B (en) * 1987-05-01 1991-07-17 Dubilier Plc Gas-filled surge arrestor
FR2625377A1 (en) * 1987-12-23 1989-06-30 Pendar Sarl Reliable surge arrestor
JPH0227694U (en) * 1988-08-10 1990-02-22
GB2230900A (en) * 1989-04-24 1990-10-31 Semitron Cricklade Ltd Electrical components
US5027100A (en) * 1990-02-12 1991-06-25 Porta Systems Corp. Gas tube fail safe device for telephone protector modules
US4910489A (en) * 1989-05-01 1990-03-20 Porta Systems Corp. Gas tube fail-safe device for telephone protector modules
MX172972B (en) * 1989-05-01 1994-01-26 Porta Systems Corp GAS TUBE SELF-ADJUSTMENT DEVICE FOR TELEPHONE PROTECTOR MODULES
US5029302A (en) * 1990-08-29 1991-07-02 Illinois Tool Works Fail safe gas tube

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9422191A1 *

Also Published As

Publication number Publication date
DE59403317D1 (en) 1997-08-14
DE4309331A1 (en) 1994-09-22
EP0689727B1 (en) 1997-07-09
WO1994022191A1 (en) 1994-09-29
ES2105657T3 (en) 1997-10-16
US5644465A (en) 1997-07-01
CN1121378A (en) 1996-04-24
CN1042878C (en) 1999-04-07

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