EP2038972B1 - Device for protecting electrical equipment against overvoltages - Google Patents

Device for protecting electrical equipment against overvoltages Download PDF

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Publication number
EP2038972B1
EP2038972B1 EP07764342A EP07764342A EP2038972B1 EP 2038972 B1 EP2038972 B1 EP 2038972B1 EP 07764342 A EP07764342 A EP 07764342A EP 07764342 A EP07764342 A EP 07764342A EP 2038972 B1 EP2038972 B1 EP 2038972B1
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EP
European Patent Office
Prior art keywords
circuit board
printed circuit
varistor
housing
soldered
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EP07764342A
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German (de)
French (fr)
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EP2038972A1 (en
Inventor
Olaf Schmidt
Udo Ogorek
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Obo Bettermann GmbH and Co KG
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Obo Bettermann GmbH and Co KG
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Publication of EP2038972A1 publication Critical patent/EP2038972A1/en
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    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/06—Mounting arrangements for a plurality of overvoltage arresters

Definitions

  • Apparatus for protection against overvoltages for electrical installations consisting of a housing and arranged inside the housing overvoltage protection elements and terminals for multiple phase conductors, a neutral conductor and a PE conductor, wherein in each case between a phase and the neutral a varistor is connected as overvoltage protection element and between neutral and PE conductor is connected a spark gap, wherein in the housing securing strips are arranged, at least one of which is soldered to a contact point of a varistor, and wherein between the fuse strip and the surface of the varistor, to which the fuse strip is soldered, a separating slide arranged is biased by a spring held in a first functional position in which abut components of the isolating slide on the fuse strip near the soldering point on the varistor, and in heated due to, for example, an overvoltage event L tstelle, is inserted in a second functional position in the gap between the fuse strip and varistor, separates the soldered joint and the retaining strips in the region of the solder joint (10)
  • Overvoltage protection devices of this type are known in the art. For example, is from the DE 36 39 533 A1 a pluggable surge arrester for electrical equipment known.
  • a multipolar design is provided so that three phase connections, a neutral connection and a PE conductor connection are provided.
  • an array of varistors and a spark gap is provided, wherein the electrical contacting takes place in such a way that in each case a varistor is connected between a phase and the neutral conductor and a spark gap between the neutral conductor and the PE conductor.
  • 3 + 1 circuit is a so-called 3 + 1 circuit.
  • Known devices of this type are formed parallelepiped, wherein on the underside of the cuboid housing, which consists of insulating material, a profiling is provided, which makes it possible that such devices can be placed and mounted on top hat profiles of sub-distributions or main distributions.
  • a profiling is provided on the underside of the cuboid housing, which consists of insulating material, which makes it possible that such devices can be placed and mounted on top hat profiles of sub-distributions or main distributions.
  • each of the varistor is connected via at least one contact strip or the like to the electrical connection lines, wherein the connection between the contact strip and the varistor is effected by a fusible link. This ensures that in the event of excessive heating, for example as a result of a corresponding overvoltage, the solder connection is released and thus the connection of the varistor is interrupted with the circuit.
  • a disadvantage of such devices is that in case of failure, although the solder connection between the contact strip and the varistor dissolves, so that the varistor is disconnected from the circuit, but a renewed contact is not prevented in any case, because no mechanical separation between the contact strip and the contact point of the varistor takes place.
  • the solder joint formed in the form of a temperature fuse is during wave soldering already in the manufacture of the device can solve. Even if a separation occurs, the separation is achieved only by an air gap.
  • the present invention seeks to provide a device for protection against surges for electrical systems, in which a reliable separation of the varistor from the fuse strip takes place in case of failure, with errors in the production of the device are excluded.
  • the invention proposes that in the housing a stocked with the varistors and the terminals board is arranged, that the fuse strips are soldered at its other end to the board, that the gate valve passes through the board and is guided on this and that on the bottom end portion of the separator slide transversely projecting projections are formed, which rest in the second functional position on the underside of the board and form a Wegbegrenzungsanschlag for the slide.
  • This design ensures that in the normal first functional position, a secure contact between the fuse strip and the varistor in the region of the solder joint takes place.
  • the soldered joint melts and the mechanical separating slide slides in the area between the securing strip and the soldering point on the varistor, so that the securing strip is mechanically lifted off the soldering joint and between the soldering point on the varistor and the corresponding Anlöt Scheme
  • the fuse strip is made of insulating existing slide, so that a mechanical separation takes place and in the gap between the fuse strip and the contact point of the varistor an insulating material, namely the separating slide is arranged.
  • the reliability is thereby further improved by the slide in a corresponding hole the board passes through and is guided in the region of this hole on the board.
  • the slide In the first functional position of the slide is biased by spring force between the fuse strip and the solder joint on the varistor, so that when a melting of the solder joint of the slide lifted by the spring force the securing strip from the solder joint on the varistor and holds in this lift-off position.
  • each varistor is adjacent to an end edge of the upper side of the printed circuit board and has at its side surfaces the contact points that each at least one fuse strip approximately parallel to the side surface of a varistor aligned protrudes from the circuit board and is soldered to a contact point, and that in each case a separating slide is displaceably aligned and arranged parallel to the side surface of the varistor, which engages in a gap between the side surface of the varistor and the fuse strip.
  • the varistor is a flat cuboidal element, which is adjacent to an end edge of the top of the circuit board and which at his Side surfaces having the contact points for connecting the fuse strip.
  • the varistor is held by electrodes, which are made correspondingly long, with the front side at a parallel distance to the top of the board. The separating slide is thus guided not only in the perforation of the printed circuit board, but also on the corresponding side surface of the varistor and on the parallel extending to this fuse strip.
  • the spark gap is arranged between the housing bottom and the printed circuit board and passes through the printed circuit board with connecting leads or connecting strips, the latter being soldered to the corresponding printed conductors of the printed circuit board.
  • the ends of the separating slides facing away from the printed circuit board are chamfered in the manner of a cutting edge.
  • guide parts are arranged in the guide slots in each case the circuit board to the bottom of the housing through cross-end of the slide is guided non-rotatably, linearly displaceable , wherein in the guide parts helical compression springs are arranged, which rest under prestress on the bottom edge facing the separating slide.
  • the guide parts have a guide slot for the projection of the separating slide.
  • a helical compression spring is attached at the bottom end of the separating slide.
  • the housing on the side facing away from the bottom has an opening which forms an insertion opening for the assembled board, which is bounded by housing side walls, wherein the housing side walls and / or the housing bottom bearing areas for the board and latching hooks for Have location of the board, which rest over the edge of the board.
  • the housing has a pot-like cover part, which is latchable with the likewise pot-like lower part.
  • a display board is arranged in the housing and connected to the board having optical display elements.
  • the invention provides a device for protection against overvoltage available, which has an optical function display and can be designed in multipolar design.
  • the first board located in the device has all the components of the protection circuit and the terminals.
  • the display board is located above the first board and may be connected to the first board via a post connector or the like. On this display board, the components for optical signaling of the state of the device are arranged.
  • the separating slide passes through the board and is in a preferably sleeve-shaped receptacle guided in the housing base. Due to the special geometry of the sleeve-shaped receptacle and the isolation slide itself a faulty mounting is avoided. Furthermore, this prevents jamming or twisting during the power interruption.
  • the isolating slide is in the fault-free case of the device in a prestressed state below the soldering of the fuse strip, with the fuse strip is connected to the varistor.
  • This bias is achieved during assembly in that a compression spring is first inserted into the corresponding receptacle in the housing lower part.
  • a cylindrical centering aid on the separating slide helps with positioning.
  • the populated board is attached to the pre-assembled in the housing isolating slide and securely fixed by located in the housing base locking hooks.
  • the device consists of an upper housing part 1 and a lower housing part 2. Both housing parts are made of insulating material. The two housing parts can be assembled and locked in a corresponding manner.
  • overvoltage elements and terminals 3 are provided for phase conductors L1 to L3 and a terminal 4 for a neutral and a terminal 5 for a PE conductor.
  • the electrical interconnection is provided such that in each case between a phase and the neutral conductor, a varistor. 6 is connected as overvoltage protection.
  • a spark gap 7 is connected between the neutral conductor and the PE conductor.
  • a printed circuit board 8 equipped with the varistors 6 and the connection terminals 3, 4, 5 is arranged in the housing 1, 2.
  • On the board fuse strip 9 are soldered and contacted with corresponding traces of the board 8, of which at least one soldered to a contact point 10 of a varistor 6.
  • a separating slide 11 is arranged, which passes through the board in corresponding holes 12 and is thus guided on this.
  • the separating slide 11 are held by a respective prestressed spring 13 in a first functional position, the in FIG. 4 and in particular in FIG. 5 is shown.
  • the solder joint is thereby separated and the securing strip 9 is held by the separating slide 11 in the region of the solder joint at a distance from the varistor 6.
  • the separating slide consists of a suitable dielectric, for example of plastic.
  • the varistors 6 are formed as approximately rectangular flat slices. Each varistor 6 is adjacent to an end edge on the upper side of the printed circuit board 8, each varistor 6 having on its side surfaces the contact points which are connected to corresponding contact strips, in particular securing strips 9. At least one such securing strip 9 is aligned parallel to the side surface of the associated varistor 6 and protrudes upward from the printed circuit board 8.
  • the separating slide 11 is displaceably aligned and arranged parallel to the side surface of the varistor 6 and engages in a gap between the side surface of the varistor 6 and the securing strip 9.
  • the spark gap 7 is arranged between the housing bottom of the lower part 2 and the printed circuit board 8 and engages with pigtails 14 corresponding perforations 15 of the printed circuit board 8.
  • the ends of the separating slide 11 remote from the assembly target position to the printed circuit board are chamfered in the manner of a cutting edge 11 ', webs of the separating slide 11 still remaining on both sides next to these cutting edges 11', so that a corresponding guide for the securing strip 9 is formed.
  • guide parts 16 are arranged in the form of approximately cylindrical sleeves, which have open at their free end expiring guide slots 17.
  • each of the printed circuit board 8 to the bottom of the housing base 2 cross-reaching end of the slide valve 11 is guided non-rotatably but linearly displaceable.
  • these guide parts 16 are arranged as springs 13 helical compression springs, which rest in the assembly target position under bias on the bottom edge facing the separating slide 11.
  • FIG. 6 the in FIG. 6 is illustrated, these transverse protruding projections 18 on the underside of the board 8 and form thus a Wegbegrenzungsanschlag for the isolation slide 11th
  • the bottom end of the separating slide 11 has a pin 20 projecting parallel to the displacement direction, onto which the biasing spring 13 is plugged in the form of a helical compression spring.
  • the lower part 2 of the housing has on the side facing away from the bottom of an insertion opening for the assembled board 8, which is bounded by the side walls of the lower part 2.
  • the housing side walls and also the lower housing part itself has support areas for the circuit board 8 and latching hooks 21 for securing the position of the assembly target located in the PCB. 8
  • the upper part 1 is similar to the lower part 2 pot-shaped and pushed onto the lower part 2 and by corresponding notches and Rastlochungen these parts are latchable together.
  • a display board 22 is still arranged on the housing, which is connected to the circuit board 8 and has optical display elements.

Abstract

The device has a printed circuit board (8) arranged in enclosure upper and lower parts (1, 2), and safety strips (9) soldered at the board, where a separating slide (11) is guided at the board. Guiding parts are arranged at a base of the part (2), and screwed compression springs are arranged in the guiding parts. The part (2) has an insertion opening for the board on a side turned to the base. Enclosure side walls and/or the part (2) has contact areas for the board and locking pins (21) to secure a position of the board, where the walls and/or part (2) rests over a boundary edge of the board.

Description

Gerät zum Schutz gegen Überspannungen für elektrische Anlagen, bestehend aus einem Gehäuse und innerhalb des Gehäuses angeordneten Überspannungsschutzelementen und Anschlussklemmen für mehrere Phasenleiter, einen Nullleiter und einen PE-Leiter, wobei jeweils zwischen einer Phase und dem Nulleiter ein Varistor als Überspannungsschutzelement geschaltet ist und zwischen Nullleiter und PE-Leiter eine Funkenstrecke geschaltet ist, wobei im Gehäuse Sicherungsstreifen angeordnet sind, von denen mindestens jeweils einer an einer Kontaktstelle eines Varistors angelötet ist, und wobei zwischen dem Sicherungsstreifen und der Fläche des Varistors, an welcher der Sicherungsstreifen angelötet ist, ein Trennschieber angeordnet ist, der durch eine Feder vorgespannt in einer ersten Funktionslage gehalten ist, in der Bestandteile des Trennschiebers am Sicherungsstreifen nahe dessen Lötstelle am Varistor anliegen, und der bei aufgrund zum Beispiel eines Überspannungsereignisses erhitzter Lötstelle, in einer zweiten Funktionslage in den Spalt zwischen Sicherungsstreifen und Varistor eingeschoben ist, die Lötverbindung auftrennt und den Sicherungsstreifen im Bereich der Lötstelle (10) auf Abstand von dem Varistor hält.Apparatus for protection against overvoltages for electrical installations, consisting of a housing and arranged inside the housing overvoltage protection elements and terminals for multiple phase conductors, a neutral conductor and a PE conductor, wherein in each case between a phase and the neutral a varistor is connected as overvoltage protection element and between neutral and PE conductor is connected a spark gap, wherein in the housing securing strips are arranged, at least one of which is soldered to a contact point of a varistor, and wherein between the fuse strip and the surface of the varistor, to which the fuse strip is soldered, a separating slide arranged is biased by a spring held in a first functional position in which abut components of the isolating slide on the fuse strip near the soldering point on the varistor, and in heated due to, for example, an overvoltage event L tstelle, is inserted in a second functional position in the gap between the fuse strip and varistor, separates the soldered joint and the retaining strips in the region of the solder joint (10) maintains a distance from the varistor.

Überspannungsschutzgeräte dieser Art sind im Stand der Technik bekannt. Beispielsweise ist aus der DE 36 39 533 A1 ein steckbarer Überspannungsableiter für elektrische Anlagen bekannt. Bei solchen bekannten Überspannungsschutzgeräten ist eine mehrpolige Ausbildung vorgesehen, so dass drei Phasen-Anschlüsse, ein Nullleiteranschluss und ein PE-Leiteranschluss vorgesehen sind. Innerhalb des Gerätes ist eine Anordnung von Varistoren und einer Funkenstrecke vorgesehen, wobei die elektrische Kontaktierung in der Weise erfolgt, dass jeweils zwischen einer Phase und den Nullleiter ein Varistor und zwischen den Nullleiter und den PE-Leiter eine Funkenstrecke geschaltet ist. Man spricht bei einer solchen Schaltungsanordnung von einer so genannten 3 + 1-Schaltung. Bekannte Geräte dieser Art sind quaderförmig ausgebildet, wobei an der Unterseite des quaderförmigen Gehäuses, welches aus Isolierstoff besteht, eine Profilierung vorgesehen ist, die es ermöglicht, dass solche Geräte auf Hutprofile von Unterverteilungen oder Hauptverteilungen aufgesetzt und befestigt werden können. Es sind solche Geräte bekannt, bei denen jeweils der Varistor über mindestens einen Kontaktstreifen oder dergleichen an die elektrischen Verbindungsleitungen angeschlossen ist, wobei die Verbindung zwischen dem Kontaktstreifen und dem Varistor durch ein Schmelzlot erfolgt. Hierdurch wird erreicht, dass im Falle einer übermäßigen Erwärmung, beispielsweise infolge einer entsprechenden Überspannung, die Lotverbindung gelöst und somit die Verbindung des Varistors mit der Schaltung unterbrochen wird. Mittels einer Defektanzeige wird ein solcher Zustand angezeigt, so dass von außen sichtbar ist, dass der entsprechende Überspannungsableiter nicht mehr funktionstüchtig ist. Nachteilig bei solchen Geräten ist, dass im Fehlerfall sich zwar die Lotverbindung zwischen dem Kontaktstreifen und dem Varistor löst, so dass der Varistor aus dem Schaltkreis abgetrennt ist, jedoch ist eine erneute Kontaktierung nicht in jedem Falle unterbunden, weil keine mechanische Trennung zwischen dem Kontaktstreifen und der Kontaktstelle des Varistors erfolgt. Zudem ist nachteilig, dass die in Form einer Temperatursicherung ausgebildete Lötstelle sich beim Schwalllöten schon bei der Herstellung des Gerätes lösen kann. Selbst wenn eine Trennung erfolgt, ist die Trennung nur durch eine Luftstrecke erreicht.Overvoltage protection devices of this type are known in the art. For example, is from the DE 36 39 533 A1 a pluggable surge arrester for electrical equipment known. In such known overvoltage protection devices, a multipolar design is provided so that three phase connections, a neutral connection and a PE conductor connection are provided. Within the device, an array of varistors and a spark gap is provided, wherein the electrical contacting takes place in such a way that in each case a varistor is connected between a phase and the neutral conductor and a spark gap between the neutral conductor and the PE conductor. One speaks in such a circuit arrangement of a so-called 3 + 1 circuit. Known devices of this type are formed parallelepiped, wherein on the underside of the cuboid housing, which consists of insulating material, a profiling is provided, which makes it possible that such devices can be placed and mounted on top hat profiles of sub-distributions or main distributions. There are known such devices in which each of the varistor is connected via at least one contact strip or the like to the electrical connection lines, wherein the connection between the contact strip and the varistor is effected by a fusible link. This ensures that in the event of excessive heating, for example as a result of a corresponding overvoltage, the solder connection is released and thus the connection of the varistor is interrupted with the circuit. By means of a defect display, such a state is displayed, so that it is visible from the outside that the corresponding surge arrester is no longer functional. A disadvantage of such devices is that in case of failure, although the solder connection between the contact strip and the varistor dissolves, so that the varistor is disconnected from the circuit, but a renewed contact is not prevented in any case, because no mechanical separation between the contact strip and the contact point of the varistor takes place. In addition, it is disadvantageous that the solder joint formed in the form of a temperature fuse is during wave soldering already in the manufacture of the device can solve. Even if a separation occurs, the separation is achieved only by an air gap.

Aus der EP 1 077 452 A ist ein Gerät gemäß Oberbegriff des Anspruches 1 bekannt.From the EP 1 077 452 A is a device according to the preamble of claim 1 is known.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Gerät zum Schutz gegen Überspannungen für elektrische Anlagen zu schaffen, bei dem im Fehlerfall eine sichere Trennung des Varistors von dem Sicherungsstreifen erfolgt, wobei auch Fehler bei der Herstellung des Gerätes ausgeschlossen sind.Based on this prior art, the present invention seeks to provide a device for protection against surges for electrical systems, in which a reliable separation of the varistor from the fuse strip takes place in case of failure, with errors in the production of the device are excluded.

Zur Lösung dieser Aufgabe schlägt die Erfindung vor, dass im Gehäuse eine mit den Varistoren und an den Anschlussklemmen bestückte Platine angeordnet ist, dass die Sicherungsstreifen mit ihrem anderen Ende an der Platine angelötet sind, dass der Trennschieber die Platine durchgreift und an dieser geführt ist, und dass am bodenseitigen Endbereich der Trennschieber quer abragende Vorsprünge ausgebildet sind, die in der zweiten Funktionslage an der Unterseite der Platine anliegen und einen Wegbegrenzungsanschlag für den Trennschieber bilden.To solve this problem, the invention proposes that in the housing a stocked with the varistors and the terminals board is arranged, that the fuse strips are soldered at its other end to the board, that the gate valve passes through the board and is guided on this and that on the bottom end portion of the separator slide transversely projecting projections are formed, which rest in the second functional position on the underside of the board and form a Wegbegrenzungsanschlag for the slide.

Durch diese Ausbildung wird erreicht, dass in der normalen ersten Funktionslage eine sichere Kontaktierung zwischen dem Sicherungsstreifen und dem Varistor im Bereich der Lötstelle erfolgt. Im Fehlerfall, wenn ein entsprechendes Überspannungsereignis eintritt, schmilzt die Lötstelle auf und der mechanische Trennschieber gleitet federkraftunterstützt in den Bereich zwischen dem Sicherungsstreifen und der Lötstelle am Varistor, so dass der Sicherungsstreifen von der Lötstelle mechanisch abgehoben wird und zwischen der Lötstelle am Varistor und dem entsprechenden Anlötbereich des Sicherungsstreifens der aus Isolierstoff bestehende Trennschieber sitzt, so dass eine mechanische Trennung erfolgt und im Spalt zwischen dem Sicherungsstreifen und der Kontaktstelle des Varistors ein Isolierstoffelement, nämlich der Trennschieber angeordnet ist. Die Funktionssicherheit wird dabei noch dadurch verbessert, dass der Trennschieber in einer entsprechenden Lochung die Platine durchgreift und im Bereich dieser Lochung an der Platine geführt ist. In der ersten Funktionslage ist der Trennschieber durch Federkraft vorgespannt zwischen dem Sicherungsstreifen und der Lötstelle am Varistor angeordnet, so dass bei einer Aufschmelzung der Lötstelle der Trennschieber durch die Federkraft den Sicherungsstreifen von der Lötstelle am Varistor abhebt und in dieser Abhebeposition hält.This design ensures that in the normal first functional position, a secure contact between the fuse strip and the varistor in the region of the solder joint takes place. In the event of a fault, when a corresponding overvoltage event occurs, the soldered joint melts and the mechanical separating slide slides in the area between the securing strip and the soldering point on the varistor, so that the securing strip is mechanically lifted off the soldering joint and between the soldering point on the varistor and the corresponding Anlötbereich the fuse strip is made of insulating existing slide, so that a mechanical separation takes place and in the gap between the fuse strip and the contact point of the varistor an insulating material, namely the separating slide is arranged. The reliability is thereby further improved by the slide in a corresponding hole the board passes through and is guided in the region of this hole on the board. In the first functional position of the slide is biased by spring force between the fuse strip and the solder joint on the varistor, so that when a melting of the solder joint of the slide lifted by the spring force the securing strip from the solder joint on the varistor and holds in this lift-off position.

Durch die am bodenseitigen Endbereich der Trennschieber quer abragenden Vorsprünge, die in der zweiten Funktionslage an der Unterseite der Platine anliegen und einen Wegbegrenzungsanschlag für den Trennschieber bilden, wird eine Endlagesicherung erreicht, wenn der Trennschieber seine zweite Funktionsstellung erreicht hat.By protruding transversely on the bottom end portion of the separator slide protruding, which abut in the second functional position on the underside of the board and form a Wegbegrenzungsanschlag for the slide, an end position assurance is achieved when the slide has reached its second functional position.

Vorzugsweise ist dabei vorgesehen, dass jeder Varistor mit einer Stirnkante der Oberseite der Leiterplatte benachbart ist und an seinen Seitenflächen die Kontaktstellen aufweist, dass jeweils mindestens ein Sicherungsstreifen etwa parallel zur Seitenfläche eines Varistors ausgerichtet von der Leiterplatte abragt und mit einer Kontaktstelle lötverbunden ist, und dass jeweils ein Trennschieber parallel zur Seitenfläche des Varistors verschieblich ausgerichtet und angeordnet ist, der in einen Spalt zwischen der Seitenfläche des Varistors und dem Sicherungsstreifen eingreift.Preferably, it is provided that each varistor is adjacent to an end edge of the upper side of the printed circuit board and has at its side surfaces the contact points that each at least one fuse strip approximately parallel to the side surface of a varistor aligned protrudes from the circuit board and is soldered to a contact point, and that in each case a separating slide is displaceably aligned and arranged parallel to the side surface of the varistor, which engages in a gap between the side surface of the varistor and the fuse strip.

Der Varistor ist dabei ein flaches quaderförmiges Element, welches mit einer Stirnkante der Oberseite der Leiterplatte benachbart ist und welches an seinen Seitenflächen die Kontaktstellen zum Anschluss der Sicherungsstreifen aufweist. Der Varistor ist über Elektroden, die entsprechend lang ausgeführt sind, mit der Stirnseite auf parallelen Abstand zur Oberseite der Platine gehalten. Der Trennschieber wird somit nicht nur in der Lochung der Leiterplatte geführt, sondern auch an der entsprechenden Seitenfläche des Varistors und an dem sich parallel zu dieser erstreckenden Sicherungsstreifen.The varistor is a flat cuboidal element, which is adjacent to an end edge of the top of the circuit board and which at his Side surfaces having the contact points for connecting the fuse strip. The varistor is held by electrodes, which are made correspondingly long, with the front side at a parallel distance to the top of the board. The separating slide is thus guided not only in the perforation of the printed circuit board, but also on the corresponding side surface of the varistor and on the parallel extending to this fuse strip.

Zusätzlich kann vorgesehen sein, dass die Funkenstrecke zwischen dem Gehäuseboden und der Leiterplatte angeordnet ist und mit Anschlusslitzen oder Anschlussstreifen die Leiterplatte durchgreift, wobei letztere mit den entsprechenden Leiterbahnen der Leiterplatte verlötet sind.In addition, it can be provided that the spark gap is arranged between the housing bottom and the printed circuit board and passes through the printed circuit board with connecting leads or connecting strips, the latter being soldered to the corresponding printed conductors of the printed circuit board.

Um die Funktion zu verbessern ist vorgesehen, dass die der Leiterplatte abgewandten Enden der Trennschieber schneidkantenartig abgeschrägt sind.In order to improve the function, it is provided that the ends of the separating slides facing away from the printed circuit board are chamfered in the manner of a cutting edge.

Um die Montage des Gerätes zu erleichtern und eine einwandfreie Führung und Montagesicherheit zu gewährleisten, ist vorgesehen, dass am Boden des Gehäuses Führungsteile angeordnet sind, in deren Führungsschlitzen jeweils das die Leiterplatte zum Boden des Gehäuses hin durchgreifende Ende der Trennschieber unverdrehbar, linear verschiebbar geführt ist, wobei in den Führungsteilen Schraubendruckfedern angeordnet sind, die unter Vorspannung an der dem Boden zugewandten Randkante der Trennschieber anliegen.In order to facilitate the assembly of the device and to ensure proper guidance and installation security, it is provided that guide parts are arranged in the guide slots in each case the circuit board to the bottom of the housing through cross-end of the slide is guided non-rotatably, linearly displaceable , wherein in the guide parts helical compression springs are arranged, which rest under prestress on the bottom edge facing the separating slide.

Durch diese Ausbildung wird eine fehlerhafte Montage vermieden, wobei zudem ein Verkanten oder Verdrehen beim Überführen des Trennschiebers in die zweite Funktionslage verhindert ist.By this design, a faulty mounting is avoided, in addition, a tilting or twisting when transferring the separating slide is prevented in the second functional position.

Um die Funktionssicherung weiterhin zu verbessern, ist vorgesehen, dass die Führungsteile einen Führungsschlitz für den Vorsprung des Trennschiebers aufweisen.In order to further improve the functional safety, it is provided that the guide parts have a guide slot for the projection of the separating slide.

Insbesondere um die Montage zu erleichtern, ist vorgesehen, dass am bodenseitigen Ende des Trennschiebers ein parallel zur Verschieberichtung abragender Zapfen ausgebildet ist, auf den als Vorspannfeder eine Schraubendruckfeder aufgesteckt ist.In particular, in order to facilitate the assembly, it is provided that at the bottom end of the separating slide a projecting parallel to the displacement pin is formed on the biasing spring, a helical compression spring is attached.

Aus dem gleichen Grunde ist vorgesehen, dass das Gehäuse auf der dem Boden abgewandten Seite eine Öffnung aufweist, die eine Einsatzöffnung für die bestückte Platine bildet, die durch Gehäuseseitenwände begrenzt ist, wobei die Gehäuseseitenwände und/oder der Gehäuseboden Auflagebereiche für die Platine und Rasthaken zur Lagesicherung der Platine aufweisen, die über die Randkante der Platine rasten.For the same reason, it is provided that the housing on the side facing away from the bottom has an opening which forms an insertion opening for the assembled board, which is bounded by housing side walls, wherein the housing side walls and / or the housing bottom bearing areas for the board and latching hooks for Have location of the board, which rest over the edge of the board.

Zudem kann vorgesehen sein, dass das Gehäuse ein topfartiges Deckelteil aufweist, welches mit dem ebenfalls topfartigen Unterteil rastverbindbar ist.In addition, it can be provided that the housing has a pot-like cover part, which is latchable with the likewise pot-like lower part.

Auch kann vorgesehen sein, dass oberhalb der Platine eine Anzeigeplatine im Gehäuse angeordnet und mit der Platine verbunden ist, die optische Anzeigeelemente aufweist.It can also be provided that above the board, a display board is arranged in the housing and connected to the board having optical display elements.

Insgesamt stellt somit die Erfindung ein Gerät zum Schutz gegen Überspannung zur Verfügung, welches eine optische Funktionsanzeige aufweist und in mehrpoliger Ausführung ausgebildet sein kann. Die in dem Gerät befindliche erste Platine weist sämtliche Bauteile der Schutzschaltung sowie die Anschlussklemmen auf. Die Anzeigeplatine ist oberhalb der ersten Platine angeordnet und kann über Pfostenverbinder oder dergleichen mit der ersten Platine verbunden sein. Auf dieser Anzeigeplatine sind die Bauelemente zur optischen Signalisierung des Zustandes des Gerätes angeordnet. Durch die erfindungsgemäße Abtrennvorrichtung ist sichergestellt, dass bei einem Defekt der Varistoren der Trennschieber die Lötverbindung zwischen einem Varistor und einem an der Platine angelöteten bogenförmig ausgeführten Sicherungsstreifen unterbricht. Die Verbindung des Sicherungsstreifens zur Platine bleibt hierbei bestehen. Der Trennschieber durchgreift die Platine und ist in einer vorzugsweise hülsenförmigen Aufnahme im Gehäuseunterteil geführt. Durch die besondere Geometrie der hülsenförmigen Aufnahme und den Trennschieber selbst wird eine fehlerhafte Montage vermieden. Weiterhin wird hierdurch ein Verkanten oder Verdrehen bei der Spannungsunterbrechung verhindert.Overall, therefore, the invention provides a device for protection against overvoltage available, which has an optical function display and can be designed in multipolar design. The first board located in the device has all the components of the protection circuit and the terminals. The display board is located above the first board and may be connected to the first board via a post connector or the like. On this display board, the components for optical signaling of the state of the device are arranged. By means of the separating device according to the invention, it is ensured that, in the event of a defect of the varistors, the separating slide interrupts the solder connection between a varistor and an arc-shaped securing strip soldered to the printed circuit board. The connection of the security strip to the board remains in this case. The separating slide passes through the board and is in a preferably sleeve-shaped receptacle guided in the housing base. Due to the special geometry of the sleeve-shaped receptacle and the isolation slide itself a faulty mounting is avoided. Furthermore, this prevents jamming or twisting during the power interruption.

Der Trennschieber befindet sich im fehlerfreien Fall des Gerätes in einem vorgespannten Zustand unterhalb der Lötstelle des Sicherungsstreifens, mit der der Sicherungsstreifen mit dem Varistor verbunden ist. Diese Vorspannung wird während der Montage dadurch erreicht, dass in die entsprechende Aufnahme im Gehäuseunterteil zunächst eine Druckfeder eingelegt wird. Eine zylinderförmige Zentrierhilfe am Trennschieber hilft bei der Positionierung. Die bestückte Platine wird auf die im Gehäuse vormontierten Trennschieber aufgesteckt und durch im Gehäuseunterteil befindliche Rasthaken sicher fixiert. Durch einen entsprechenden Vorsprung am Trennschieber wird erreicht, dass der Trennschieber nur bis zu einem bestimmten Vorschub vorgeschoben werden kann, bis nämlich der Vorsprung an der Platine anliegt. Hierdurch wird sichergestellt, dass der Sicherungsstreifen im Fehlerfall sicher vom Varistor getrennt bleibt und eine erneute Kontaktierung vermieden ist.The isolating slide is in the fault-free case of the device in a prestressed state below the soldering of the fuse strip, with the fuse strip is connected to the varistor. This bias is achieved during assembly in that a compression spring is first inserted into the corresponding receptacle in the housing lower part. A cylindrical centering aid on the separating slide helps with positioning. The populated board is attached to the pre-assembled in the housing isolating slide and securely fixed by located in the housing base locking hooks. By means of a corresponding projection on the separating slide, it is achieved that the separating slide can only be advanced up to a certain feed, namely until the projection bears against the printed circuit board. This ensures that the fuse strip remains safely separated from the varistor in case of failure and a renewed contact is avoided.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und im Folgenden näher beschrieben. Es zeigt:

Figur 1
ein Gerät zum Schutz gegen Überspannungen in Explosionsdarstellung;
Figur 2
Einzelteile des Gerätes in Explosionsdarstellung;
Figur 3
das Gehäuseunterteil in Ansicht;
Figur 4
das Gehäuseunterteil mit montierter Platine in Ansicht;
Figur 5
eine Einzelheit in einer Ersten Funktionslage;
Figur 6
die Einzelheit in einer Zweiten Funktionslage.
An embodiment of the invention is illustrated in the drawing and described in more detail below. It shows:
FIG. 1
a device for protection against overvoltages in exploded view;
FIG. 2
Individual parts of the device in exploded view;
FIG. 3
the lower part of the housing in view;
FIG. 4
the lower housing part with mounted circuit board in view;
FIG. 5
a detail in a first functional situation;
FIG. 6
the detail in a second functional position.

In der Figur 1 sind die Bestandteile des Gerätes gegen Überspannungen gezeigt. Das Gerät besteht aus einem Gehäuseoberteil 1 und einem Gehäuseunterteil 2. Beide Gehäuseteile bestehen aus Isolierstoff. Die beiden Gehäuseteile können in entsprechender Weise zusammengefügt und verrastet werden. Im Gehäuse sind später noch beschriebene Überspannungselemente sowie Anschlussklemmen 3 für Phasenleiter L1 bis L3 vorgesehen sowie eine Anschlussklemme 4 für einen Nullleiter und eine Anschlussklemme 5 für einen PE-Leiter. Die elektrische Verschaltung ist derart vorgesehen, dass jeweils zwischen einer Phase und dem Nullleiter ein Varistor 6 als Überspannungsschutz geschaltet ist. Zusätzlich ist zwischen Nullleiter und PE-Leiter eine Funkenstrecke 7 geschaltet. Bei der vorgesehenen Konfiguration ist im Gehäuse 1,2 eine mit den Varistoren 6 und den Anschlussklemmen 3,4,5 bestückte Platine 8 angeordnet. An der Platine sind Sicherungsstreifen 9 angelötet und mit entsprechenden Leiterbahnen der Platine 8 kontaktiert, von denen mindestens jeweils einer an einer Kontaktstelle 10 eines Varistors 6 angelötet ist. In dem Bereich zwischen den Sicherungsstreifen 9 und der Fläche des Varistors 6, an welcher der Sicherungsstreifen 9 angelötet ist, ist ein Trennschieber 11 angeordnet, der die Platine in entsprechenden Lochungen 12 durchgreift und somit an dieser geführt ist. Die Trennschieber 11 sind durch jeweils eine vorgespannte Feder 13 in einer ersten Funktionslage gehalten, die in Figur 4 und insbesondere in Figur 5 gezeigt ist. In dieser Funktionslage liegen die oberen Endbereiche des Trennschiebers 11 am Sicherungsstreifen 9 nahe dessen Lötstelle 10 am Varistor 6 an. Sofern aufgrund eines Fehlerereignisses, insbesondere eines Überspannungsereignisses, die Lötstelle bei 10 erhitzt wird, ist der Trennschieber in eine zweite Funktionslage verschoben, die in Figur 6 gezeigt ist. Dabei sitzt der Trennschieber 11 in dem Spalt, der sich zwischen dem Sicherungsstreifen 9 und dem Varistor 6 nach Trennung der Lötstelle ergibt, so dass der Sicherungsstreifen 9 vom Varistor 6 abgehoben ist.In the FIG. 1 the components of the device are shown against overvoltages. The device consists of an upper housing part 1 and a lower housing part 2. Both housing parts are made of insulating material. The two housing parts can be assembled and locked in a corresponding manner. In the housing later described overvoltage elements and terminals 3 are provided for phase conductors L1 to L3 and a terminal 4 for a neutral and a terminal 5 for a PE conductor. The electrical interconnection is provided such that in each case between a phase and the neutral conductor, a varistor. 6 is connected as overvoltage protection. In addition, a spark gap 7 is connected between the neutral conductor and the PE conductor. In the intended configuration, a printed circuit board 8 equipped with the varistors 6 and the connection terminals 3, 4, 5 is arranged in the housing 1, 2. On the board fuse strip 9 are soldered and contacted with corresponding traces of the board 8, of which at least one soldered to a contact point 10 of a varistor 6. In the area between the securing strip 9 and the surface of the varistor 6, to which the securing strip 9 is soldered, a separating slide 11 is arranged, which passes through the board in corresponding holes 12 and is thus guided on this. The separating slide 11 are held by a respective prestressed spring 13 in a first functional position, the in FIG. 4 and in particular in FIG. 5 is shown. In this functional position, the upper end regions of the separating slide 11 abut against the securing strip 9 near its soldering point 10 on the varistor 6. If due to a fault event, in particular an overvoltage event, the solder joint is heated at 10, the gate valve is moved to a second functional position, the FIG. 6 is shown. In this case, the separating slide 11 is seated in the gap, which results between the securing strip 9 and the varistor 6 after separation of the solder joint, so that the Secured strip 9 is lifted off the varistor 6.

Die Lötverbindung ist dabei aufgetrennt und der Sicherungsstreifen 9 ist durch den Trennschieber 11 im Bereich der Lötstelle auf Abstand von dem Varistor 6 gehalten. Der Trennschieber besteht aus einem geeigneten Dielektrikum, beispielsweise aus Kunststoff. Die Varistoren 6 sind als etwa quaderförmige flache Scheiben ausgebildet. Jeder Varistor 6 ist mit einer Stirnkante auf der Oberseite der Leiterplatte 8 benachbart, wobei jeder Varistor 6 an seinen Seitenflächen die Kontaktstellen aufweist, die mit entsprechenden Kontaktstreifen, insbesondere Sicherungsstreifen 9 verbunden werden. Mindestens ein solcher Sicherungsstreifen 9 ist parallel zur Seitenfläche des zugehörigen Varistors 6 ausgerichtet und ragt nach oben von der Leiterplatte 8 ab. Der Trennschieber 11 ist parallel zur Seitenfläche des Varistors 6 verschieblich ausgerichtet und angeordnet und greift in einen Spalt zwischen der Seitenfläche des Varistors 6 und dem Sicherungsstreifen 9 ein.The solder joint is thereby separated and the securing strip 9 is held by the separating slide 11 in the region of the solder joint at a distance from the varistor 6. The separating slide consists of a suitable dielectric, for example of plastic. The varistors 6 are formed as approximately rectangular flat slices. Each varistor 6 is adjacent to an end edge on the upper side of the printed circuit board 8, each varistor 6 having on its side surfaces the contact points which are connected to corresponding contact strips, in particular securing strips 9. At least one such securing strip 9 is aligned parallel to the side surface of the associated varistor 6 and protrudes upward from the printed circuit board 8. The separating slide 11 is displaceably aligned and arranged parallel to the side surface of the varistor 6 and engages in a gap between the side surface of the varistor 6 and the securing strip 9.

Die Funkenstrecke 7 ist zwischen dem Gehäuseboden des Unterteils 2 und der Leiterplatte 8 angeordnet und durchgreift mit Anschlusslitzen 14 entsprechende Lochungen 15 der Leiterplatte 8. Die umgebogenen Enden, sind wie in Figur 4 ersichtlich, mit den entsprechenden Leiterbahnen der Leiterplatte 8 verlötet.The spark gap 7 is arranged between the housing bottom of the lower part 2 and the printed circuit board 8 and engages with pigtails 14 corresponding perforations 15 of the printed circuit board 8. The bent ends, as in FIG. 4 seen with the corresponding conductor tracks of the printed circuit board 8 soldered.

Wie beispielsweise aus Figur 2 besonders deutlich ersichtlich, sind die in der Montagesolllage zur Leiterplatte abgewandten Enden der Trennschieber 11 nach Art einer Schneidkante 11' abgeschrägt, wobei beidseits neben diesen Schneidkanten 11' noch Stege des Trennschiebers 11 verbleiben, so dass eine entsprechende Führung für den Sicherungsstreifen 9 gebildet ist.Like, for example FIG. 2 particularly clearly visible, the ends of the separating slide 11 remote from the assembly target position to the printed circuit board are chamfered in the manner of a cutting edge 11 ', webs of the separating slide 11 still remaining on both sides next to these cutting edges 11', so that a corresponding guide for the securing strip 9 is formed.

Am Boden des Gehäuseunterteils 2 sind Führungsteile 16 in Form von etwa zylindrischen Hülsen angeordnet, die an ihrem freien Ende offen auslaufende Führungsschlitze 17 aufweisen. In diesen Führungsschlitzen 17 ist jeweils das die Leiterplatte 8 zum Boden des Gehäuseunterteils 2 hindurchgreifende Ende der Trennschieber 11 unverdrehbar aber linear verschiebbar geführt. In diesen Führungsteilen 16 sind als Federn 13 Schraubendruckfedern angeordnet, die in der Montagesolllage unter Vorspannung an der dem Boden zugewandten Randkante der Trennschieber 11 anliegen. Zusätzlich sind am bodenseitigen Endbereich der Trennschieber 11 quer abragende Vorsprünge 18 ausgebildet, die ebenfalls in Schlitzen 19 der Führungsteile 16 geführt sind. In der zweiten Funktionslage, die in Figur 6 verdeutlicht ist, liegen diese quer abragenden Vorsprünge 18 an der Unterseite der Platine 8 an und bilden somit einen Wegbegrenzungsanschlag für den Trennschieber 11.At the bottom of the lower housing part 2 guide parts 16 are arranged in the form of approximately cylindrical sleeves, which have open at their free end expiring guide slots 17. In these guide slots 17 each of the printed circuit board 8 to the bottom of the housing base 2 cross-reaching end of the slide valve 11 is guided non-rotatably but linearly displaceable. In these guide parts 16 are arranged as springs 13 helical compression springs, which rest in the assembly target position under bias on the bottom edge facing the separating slide 11. In addition, at the bottom end region of the separating slide 11 are formed transversely projecting projections 18, which are likewise guided in slots 19 of the guide parts 16. In the second functional position, the in FIG. 6 is illustrated, these transverse protruding projections 18 on the underside of the board 8 and form thus a Wegbegrenzungsanschlag for the isolation slide 11th

Zusätzlich weist das bodenseitige Ende des Trennschiebers 11 einen parallel zur Verschieberichtung abragenden Zapfen 20 auf, auf den die vorspannende Feder 13 in Form einer Schraubendruckfeder aufgesteckt ist.In addition, the bottom end of the separating slide 11 has a pin 20 projecting parallel to the displacement direction, onto which the biasing spring 13 is plugged in the form of a helical compression spring.

Das Unterteil 2 des Gehäuses weist auf der dem Boden abgewandte Seite eine Einsatzöffnung für die bestückte Platine 8 auf, die durch die Seitenwände des Unterteils 2 begrenzt ist. Die Gehäusenseitenwände und auch das Gehäuseunterteil selbst weist Auflagebereiche für die Platine 8 auf sowie Rasthaken 21 zur Lagesicherung der in Montagesolllage befindlichen Platine 8.The lower part 2 of the housing has on the side facing away from the bottom of an insertion opening for the assembled board 8, which is bounded by the side walls of the lower part 2. The housing side walls and also the lower housing part itself has support areas for the circuit board 8 and latching hooks 21 for securing the position of the assembly target located in the PCB. 8

Das Oberteil 1 ist ähnlich wie das Unterteil 2 topfartig ausgebildet und auf das Unterteil 2 aufschiebbar und durch entsprechende Rasten und Rastlochungen sind diese Teile miteinander rastverbindbar. Zusätzlich ist oberhalb der Platine 8 noch eine Anzeigeplatine 22 am Gehäuse angeordnet, die mit der Platine 8 verbunden ist und optische Anzeigeelemente aufweist.The upper part 1 is similar to the lower part 2 pot-shaped and pushed onto the lower part 2 and by corresponding notches and Rastlochungen these parts are latchable together. In addition, above the board 8, a display board 22 is still arranged on the housing, which is connected to the circuit board 8 and has optical display elements.

Die Erfindung ist nicht auf das Ausführungsbeispiel beschränkt, sondern im Rahmen der Offenbarung vielfach variabel.The invention is not limited to the embodiment, but in the context of the disclosure often variable.

Claims (10)

  1. A device for protection against overvoltages for electrical equipment, consisting of a housing (1, 2) and overvoltage protection elements and binding posts (3, 4, 5) for several phase conductors, a neutral conductor and a PE conductor, in each case a varistor (6) as an overvoltage protection element being connected between a phase and the neutral conductor and a discharger (7) being connected between the neutral conductor and the PE conductor, in the housing (1, 2) there being provided fuse strips (9), at least one of which in each case being soldered to a contact point (10) of a varistor (6), and between the fuse strip (9) and the surface of the varistor (6) to which the fuse strip (9) is soldered there being provided a separating slide (11), which is held biased by a spring (13) in a first operating position in which components of the separating slide (11) on the fuse strip (9) close to its soldered joint (10) rest against the varistor (6), and which is slid into the gap between the fuse strip (9) and varistor (6) when the soldered joint is heated, for example as the result of an overvoltage incident, separates the soldered joint and holds the fuse strip (9) spaced from the varistor (6) in the region of the soldered joint (10),
    characterised in that a printed circuit board (8) equipped with the varistors (6) and at the binding posts (3, 4, 5) is arranged in the housing (1, 2),
    in that the fuse strips (9) are soldered by their other end to the printed circuit board (8),
    in that the separating slide (11) passes through the printed circuit board (8) and is guided on it,
    and in that at the bottom end region of the separating slides (11) there are provided projections (18) protruding at right angle, which in the second operating position rest against the underside of the printed circuit board (8) and form a travel limit stop for the separating slide (11).
  2. A device according to Claim 1,
    characterised in that each varistor (6) with one front edge is adjacent to the upper surface of the printed circuit board (8) and at its lateral surfaces comprises the contact points (10),
    in that in each case at least one fuse strip (9) protrudes from the printed circuit board (8) aligned roughly parallel to the lateral surface of a varistor (6) and is soldered with a contact point (10)
    and in that in each case a separating slide (11) is displaceably aligned and disposed parallel to the lateral surface of the varistor (6), which engages into a gap between the lateral surface of the varistor (6) and the fuse strip (9).
  3. A device according to Claim 1 or 2,
    characterised in that the discharger (7) is disposed between the bottom of the housing and the printed circuit board (8) and with connection slots (14) or connecting strips passes through the printed circuit board (8), the latter being soldered with the corresponding track conductors of the printed circuit board (8).
  4. A device according to one of Claims 1 to 3,
    characterised in that the ends of the separating slides (11) further from the printed circuit board (8) are slanted in the manner of cutting edges.
  5. A device according to one of Claims 1 to 4,
    characterised in that on the bottom of the housing there are disposed guide components (16), in the guide slots (17) of which in each case the end of the separating slides (11) passing through the printed circuit board (8) to the bottom of the housing is passed without being able to be twisted but with linear displaceability, in the guide components (16) there being arranged helical compression springs (13), which, when pretensioned, rest against the edge of the separating slides closer to the bottom.
  6. A device according to Claim 5,
    characterised in that the guide components (16) comprise a guide slot (19) for the projection (18) of the separating slide (11).
  7. A device according to one of Claims 1 to 6,
    characterised in that on the bottom end of the separating slide (11) there is provided a peg (20) protruding parallel to the direction of displacement, onto which a helical compression spring is placed as a biasing spring (13).
  8. A device according to one of Claims 1 to 7,
    characterised in that the housing, on the side further from the bottom, comprises an aperture forming an insertion opening for the equipped printed circuit board (8), which is limited by side walls of the housing, the side walls of the housing and/or the bottom of the housing comprising support regions for the printed circuit board (8) and engagement hooks (21) for securing the position of the printed circuit board (8), which hooks snap over the edge of the printed circuit board (8).
  9. A device according to one of Claims 1 to 8,
    characterised in that the housing comprises a cup-shaped cover part that can be latched with the likewise cup-shaped lower part.
  10. A device according to one of Claims 1 to 9,
    characterised in that above the printed circuit board (8) there is disposed a display printed circuit board (22) in the housing, which is connected to the printed circuit board (8) and comprises the optical display elements.
EP07764342A 2006-07-06 2007-05-23 Device for protecting electrical equipment against overvoltages Active EP2038972B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006031229A DE102006031229B3 (en) 2006-07-06 2006-07-06 Electrical system overvoltage protecting device, has enclosure lower part with insertion opening for printed circuit board, where enclosure side walls and/or part has locking pins to secure position of board
PCT/DE2007/000936 WO2008003274A1 (en) 2006-07-06 2007-05-23 Device for protecting electrical equipment against overvoltages

Publications (2)

Publication Number Publication Date
EP2038972A1 EP2038972A1 (en) 2009-03-25
EP2038972B1 true EP2038972B1 (en) 2010-04-07

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EP (1) EP2038972B1 (en)
CN (1) CN101479898B (en)
AT (1) ATE463867T1 (en)
DE (2) DE102006031229B3 (en)
HK (1) HK1130573A1 (en)
WO (1) WO2008003274A1 (en)

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Publication number Priority date Publication date Assignee Title
EP2287984B1 (en) 2009-07-20 2011-09-21 OBO Bettermann GmbH & Co. KG Surge absorbers
CN101998764B (en) * 2009-08-20 2012-08-08 中达电通股份有限公司 Matrix MOV circuit board structure and manufacturing method thereof
IT1398757B1 (en) 2010-03-12 2013-03-18 Emmegi Spa CUTTING UNIT FOR A CUTTING MACHINE.
DE202011110468U1 (en) 2011-02-18 2014-03-07 Dehn + Söhne Gmbh + Co. Kg Overvoltage protection device comprising at least one surge arrester
CN108683154B (en) * 2018-06-19 2019-08-23 郑州航空工业管理学院 A kind of over-pressure safety device of Internet of Things radiofrequency launcher
FR3140489A1 (en) * 2022-09-29 2024-04-05 Citel Surge protection device and method of manufacturing such a device

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Publication number Priority date Publication date Assignee Title
DE3639533A1 (en) * 1986-11-20 1988-06-01 Bettermann Obo Ohg Plug-in surge diverter for electrical installations
DE19545505C1 (en) * 1995-12-06 1997-05-28 Dehn & Soehne Surge arrester for low-voltage, high power fuse
US6430019B1 (en) * 1998-06-08 2002-08-06 Ferraz S.A. Circuit protection device
DE202004006227U1 (en) * 2004-04-16 2004-09-16 Phoenix Contact Gmbh & Co. Kg Surge protection device
CN2702506Y (en) * 2004-05-28 2005-05-25 贵州飞舸电子有限公司 Novel structural surge protector

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DE102006031229B3 (en) 2007-12-06
CN101479898B (en) 2012-06-27
ATE463867T1 (en) 2010-04-15
EP2038972A1 (en) 2009-03-25
HK1130573A1 (en) 2009-12-31
CN101479898A (en) 2009-07-08
DE502007003413D1 (en) 2010-05-20
WO2008003274A1 (en) 2008-01-10

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