EP2038972B1 - Appareil de protection contre les surtensions pour installations électriques - Google Patents

Appareil de protection contre les surtensions pour installations électriques 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
Authority
EP
European Patent Office
Prior art keywords
circuit board
printed circuit
varistor
housing
soldered
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07764342A
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German (de)
English (en)
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EP2038972A1 (fr
Inventor
Olaf Schmidt
Udo Ogorek
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.)
Obo Bettermann GmbH and Co KG
Original Assignee
Obo Bettermann GmbH and Co KG
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Application filed by Obo Bettermann GmbH and Co KG filed Critical Obo Bettermann GmbH and Co KG
Publication of EP2038972A1 publication Critical patent/EP2038972A1/fr
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Publication of EP2038972B1 publication Critical patent/EP2038972B1/fr
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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
    • 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.

Landscapes

  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (10)

  1. Appareil de protection contre les surtensions pour installations électriques, composé d'un boîtier (1, 2) ainsi que d'éléments de protection contre les surtensions et de bornes de connexion (3, 4, 5) disposés à l'intérieur du boîtier pour plusieurs conducteurs de phase, un conducteur neutre et un conducteur de protection, une varistance (6) étant branchée comme élément de protection contre les surtensions entre chaque phase et le conducteur neutre et un éclateur (7) étant branché entre conducteur neutre et conducteur de protection, des lames fusibles (9) étant disposées dans le boîtier (1, 2), dont au moins une est brasée à un point de contact (10) d'une varistance (6), et un coulisseau de séparation (11) étant disposé entre la lame fusible (9) et la surface de la varistance (6) sur laquelle la lame fusible (9) est brasée, lequel, précontraint par un ressort (13), est maintenu dans une première position de fonctionnement dans laquelle des éléments du coulisseau de séparation (11) sont appliqués sur la lame fusible (9) à proximité de sa brasure (10) sur la varistance (6), et lequel, en cas de surchauffe de la brasure, par exemple en raison d'une surtension, est inséré, dans une deuxième position de fonctionnement, dans la fente entre lame fusible (9) et varistance (6), sépare la liaison brasée et maintient la lame fusible (9) à distance de la varistance (6) dans la région de la brasure (10), caractérisé en ce qu'une platine (8) équipée des varistances (6) et des bornes de connexion (3, 4,5) est disposée dans le boîtier (1, 2), que les lames fusibles (9) sont brasées sur la platine (8) par leur autre extrémité, que le coulisseau de séparation (11) traverse la platine (8) et est guidée sur celle-ci, et que dans la zone terminale côté fond des coulisseaux de séparation (11) sont formées des saillies (18) dépassant transversalement qui, dans la deuxième position de fonctionnement, sont appliquées contre la face inférieure de la platine (8) et forment une butée de limitation de course pour le coulisseau de séparation (11).
  2. Appareil selon la revendication 1, caractérisé en ce que chaque varistance (6) est adjacente par un bord frontal à la face supérieure de la carte de circuits imprimés (8) et présente les points de contact (10) sur ses surfaces latérales, que chaque fois au moins une lame fusible (9) fait saillie de la carte de circuits imprimés (8) en étant orientée à peu près parallèlement à la surface latérale d'une varistance (6) et est reliée par brasure à point de contact (10), et que chaque fois un coulisseau de séparation (11) est orienté et disposé de manière coulissante parallèlement à la surface latérale de la varistance (6), lequel s'engage dans une fente entre la surface latérale de la varistance (6) et la lame fusible (9).
  3. Appareil selon la revendication 1 ou 2, caractérisé en ce que l'éclateur (7) est disposé entre le fond de boîtier et la carte de circuits imprimés (8) et traverse la carte de circuits imprimés (8) par des fils de connexion (14) ou des lames de connexion, lesquels ou lesquelles sont brasé(e)s avec les pistes conductrices correspondantes de la carte de circuits imprimés (8).
  4. Appareil selon une des revendications 1 à 3, caractérisé en ce que les extrémités du coulisseau de séparation (11) éloignées de la carte de circuits imprimés (8) sont biseautées à la manière d'arêtes coupantes.
  5. Appareil selon une des revendications 1 à 4, caractérisé en ce que sur le fond du boîtier sont disposées des pièces de guidage (16) dans les fentes de guidage (17) desquelles est guidée, par coulissement linéaire, sans possibilité de rotation, l'extrémité du coulisseau de séparation (11) qui traverse la carte de circuits imprimés (8) en direction du fond du boîtier, des ressorts de compression hélicoïdaux (13) étant disposés dans les pièces de guidage (16), lesquels sont appliqués sous précontrainte sur le bord extérieur du coulisseau de séparation (11) tourné vers le fond.
  6. Appareil selon la revendication 5, caractérisé en ce que les pièces de guidage (16) présentent une fente de guidage (19) pour la saillie (18) du coulisseau de séparation (11).
  7. Appareil selon une des revendications 1 à 6, caractérisé en ce qu'à l'extrémité côté fond du coulisseau de séparation (11) est formé un tenon (20) faisant saillie parallèlement à la direction de coulissement, sur lequel est monté un ressort de compression hélicoïdal (13) formant ressort de précontrainte.
  8. Appareil selon une des revendications 1 à 7, caractérisé en ce que le boîtier présente du côté éloigné du fond une ouverture formant une ouverture d'insertion pour la platine (8) équipée, qui est limitée par des parois latérales du boîtier, les parois latérales du boîtier et/ou la fond de boîtier présentant des zones d'appui pour la platine (8) et des crochets d'arrêt (21) pour le blocage en position de la platine (8), qui s'encliquettent sur le bord extérieur de la platine (8).
  9. Appareil selon une des revendications 1 à 8, caractérisé en ce que le boîtier présente une partie de couvercle en forme de pot, laquelle peut être assemblée par encliquetage avec la partie inférieure également en forme de pot.
  10. Appareil selon une des revendications 1 à 9, caractérisé en ce que dans le boîtier, au-dessus de la platine (8), est disposée une platine d'affichage (22) qui est reliée à la platine (8) et qui présente des éléments d'affichage optique.
EP07764342A 2006-07-06 2007-05-23 Appareil de protection contre les surtensions pour installations électriques Active EP2038972B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006031229A DE102006031229B3 (de) 2006-07-06 2006-07-06 Gerät zum Schutz gegen Überspannungen für elektrische Anlagen
PCT/DE2007/000936 WO2008003274A1 (fr) 2006-07-06 2007-05-23 Appareil de protection contre les surtensions pour installations électriques

Publications (2)

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

Family

ID=38441870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07764342A Active EP2038972B1 (fr) 2006-07-06 2007-05-23 Appareil de protection contre les surtensions pour installations électriques

Country Status (6)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2287984T3 (pl) 2009-07-20 2012-02-29 Bettermann Obo Gmbh & Co Kg Ochronnik przepięciowy
CN101998764B (zh) * 2009-08-20 2012-08-08 中达电通股份有限公司 一种矩阵式金属氧化物压敏电阻电路板结构及其制造方法
IT1398757B1 (it) 2010-03-12 2013-03-18 Emmegi Spa Unita' di taglio per una macchina troncatrice.
DE202011110468U1 (de) 2011-02-18 2014-03-07 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzeinrichtung, umfassend mindestens einen Überspannungsableiter
CN108683154B (zh) * 2018-06-19 2019-08-23 郑州航空工业管理学院 一种物联网射频发射器的过压保护装置
FR3140489A1 (fr) * 2022-09-29 2024-04-05 Citel Dispositif de protection contre les surtensions et procédé de fabrication d’un tel dispositif

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3639533A1 (de) * 1986-11-20 1988-06-01 Bettermann Obo Ohg Steckbarer ueberspannungsableiter fuer elektrische anlagen
DE19545505C1 (de) * 1995-12-06 1997-05-28 Dehn & Soehne Überspannungsableiter
US6430019B1 (en) * 1998-06-08 2002-08-06 Ferraz S.A. Circuit protection device
DE202004006227U1 (de) * 2004-04-16 2004-09-16 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzgerät
CN2702506Y (zh) * 2004-05-28 2005-05-25 贵州飞舸电子有限公司 新型结构的电涌保护器

Also Published As

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

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