EP1854109B1 - Parafoudre comprenant au moins un element de derivation, par exemple une varistance - Google Patents

Parafoudre comprenant au moins un element de derivation, par exemple une varistance Download PDF

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Publication number
EP1854109B1
EP1854109B1 EP07717672A EP07717672A EP1854109B1 EP 1854109 B1 EP1854109 B1 EP 1854109B1 EP 07717672 A EP07717672 A EP 07717672A EP 07717672 A EP07717672 A EP 07717672A EP 1854109 B1 EP1854109 B1 EP 1854109B1
Authority
EP
European Patent Office
Prior art keywords
bridge
surge arrester
arrester
conductor section
solder
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.)
Not-in-force
Application number
EP07717672A
Other languages
German (de)
English (en)
Other versions
EP1854109A1 (fr
Inventor
Peter Zahlmann
Edmund ZÄUNER
Sascha Ludewig
Richard Daum
Georg Wittmann
Florian Gaeck
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.)
Dehn SE and Co KG
Original Assignee
Dehn and Soehne GmbH and Co KG
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 Dehn and Soehne GmbH and Co KG filed Critical Dehn and Soehne GmbH and Co KG
Publication of EP1854109A1 publication Critical patent/EP1854109A1/fr
Application granted granted Critical
Publication of EP1854109B1 publication Critical patent/EP1854109B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure

Definitions

  • the invention relates to a surge arrester having at least one dissipation element, for example a varistor and a separating device to one or the Ableitiata one or all poles to disconnect from the network, wherein the separating device comprises a solder joint, which is integrated into the electrical connection path within the arrester, wherein a movable conductor section or a movable conductive bridge is connected to the discharge element on the one hand and the conductor section or the bridge is connected to an external electrical connection of the discharge conductor via the soldering point, and furthermore comprising a biasing force-generating spring, the corresponding force vector being directly or indirectly applied to the conductor section. or the bridge acts in the separation direction, according to the preamble of patent claim 1.
  • the separating device comprises a solder joint, which is integrated into the electrical connection path within the arrester, wherein a movable conductor section or a movable conductive bridge is connected to the discharge element on the one hand and the conductor section or the bridge is connected to an external electrical connection of
  • a solder joint is arranged as a thermal fuse in which one of the soldered supply line parts with a, this supply line in the direction away from the soldering biasing spring is in communication.
  • the supply line can be designed as a flexible, rope-like conductor, but here problems occur at high surge currents.
  • the spring-biased supply line through a bridge to connect, while both ends are in contact via solder joints with other supply lines.
  • the lead part which is movable, has inherently rigid properties and can be made with a relatively large cross-section of highly conductive material. This results in a high surge current resistance. Due to the intended two interruption points a particularly safe separation of the surge arrester is to be effected by the network.
  • the bridge is viewed in cross-section double-L-shaped.
  • the two supply line sections connected by the bridge can be arranged relatively far apart in this way.
  • the bridge according to EP 0 905 839 B1 to be provided at one end with a web on which a biasing force generating spring is fixed.
  • pluggable surge arresters after EP 0 905 839 B1 to provide an optical defect display, comprising a arranged in the end face of the upper part opening and a movably mounted in the interior of the upper part lever, which extends from the region of the aperture to the trajectory of the conductive bridge and the first end located in the region of the opening a signal plate wearing.
  • the signal plate has, on its surface facing the opening, a marking which is typical for the corresponding operating state. The marking can be spent by the bridge during its opening movement, taking into account the existing lever of a non-visible through the opening in a viewable position.
  • the solder joint which holds the bridge under spring biasing force, has a solder with a defined melting point.
  • the melting point is chosen so that it is not reached in heat energies that can take the arrester undamaged.
  • the solder joint thus remains effective as long as the surge arrester is undamaged but is released at higher heat energies.
  • solders are only limited able to absorb mechanical forces, in particular shear forces.
  • the latter in turn means that the spring biasing force, which acts on the bridge and the corresponding solder joint, is subject to a narrow limitation.
  • a limited spring force is detrimental to a rapid separation movement of the rigid bridge part, especially when due to the eutectic behavior of the solder no immediate melting of the soldering occurs.
  • a soldering point of a thermal switch opening in the current path between the mains connection and varistor is provided when the varistor overheats under spring force.
  • One of the contacts of the Lotstelle is located on a loaded by the spring force in the opening direction fixed housing contact clip.
  • a predetermined breaking point is arranged, whose cross-section and thus mechanical resistance moment is smaller than the cross section of the contact clip in its remaining course.
  • the basic idea of the invention is therefore that in addition a thermally actuable blocking element blocks the movable conductor section or the intended movable conductive bridge with regard to the permanently acting prestressing force vector, so that the soldering point of the separating device is not subjected to permanent force-side loading.
  • the possibility is given to let large spring forces take effect, which realize a fast movement during the actual separation. Under these conditions, the breaking capacity of the separating device in the case of becoming active this is significantly improved.
  • the thermally triggered blocking element engages on the one hand in an angled portion of the conductor portion and on the other hand counteracted on the arrester housing or a housing partition wall of the arrester and standing with the arrester in thermal, heat-conducting contact.
  • the thermally actuable blocking element as a bolt-like part blocks the movement path of a lever transmission which is arranged between the spring and the conductor section.
  • the thermally actuable blocking element can be made as a preformed part from a low-melting solder or be manufactured in such a way.
  • the properties of the solder for the thermally-releasable barrier element can be determined solely from a mechanical point of view, e.g. high tensile strength, can be selected.
  • Ausgestaltend the movable conductor portion can be formed as a spring tongue, so that there is a further support of the separation movement in case of failure.
  • the leverage can be associated with an optical defect indicator to signal the failure or failure state of the diverter.
  • the movable conductor portion is a stamped and bent part, which has a molded outer terminal, in particular in the form of a plug contact.
  • this part can be manufactured inexpensively and easily assembled without much effort.
  • the activation temperature of the blocking element is smaller than the melting temperature of the solder joint.
  • a lever member covers a first way to abut the conductor portion or the Bridge can then be used this distance traveled to trigger a telecommunications contact or an optical display, which or signals that a critical increase in temperature took place, to indicate in this way that it is expedient to replace the surge arrester.
  • the biasing force which is preferably generated with a spring arrangement, assume a higher value compared to the possible continuous load of the solder joint to ensure the desired very fast separation movement of the conductor portion or the conductive bridge in case of failure.
  • the actual surge arrester 3 is inserted in the space formed by the two legs of the U-shaped base part 1, the actual surge arrester 3 is inserted.
  • Corresponding plug contacts 4 on the surge arrester 3 engage Contact recesses 5 in the base part 1 a.
  • a coding 6 on the one hand in the base part 1 and on the other hand in the surge arrester 3 prevents the insertion of incorrect or inappropriate arrester.
  • the surge arrester 3 has in its interior the actual arrester, not shown, e.g. a varistor disc.
  • the varistor disk located behind the partition wall 7 has two connections.
  • a first terminal 8 is connected to the left-side plug contact 4 via a conductor part 9 in connection.
  • a second terminal 10 is passed through the partition wall 7 and connected there via a solder joint 11 with a movable conductor section 12.
  • the movable conductor section 12 merges into the plug contact 4 arranged on the right side.
  • a lever-like executed separation block 13 has an optical defect indicator 14 on the upper side.
  • the optical defect indicator 14 adjacent engages a first end of a spring 15, wherein the second end of the spring 15 is fixed in the region of the partition wall 7.
  • the spring 15 causes a biasing force on the Abtrennbock 13 and the plunger 16 on the movable conductor portion 12 and thus the solder joint 11th
  • the surge arrester 3 still has a housing 18 with a window 19 with respect to the optical defect indicator 14.
  • Fig. 2 is of a similar construction as the Fig. 1 outlined.
  • thermally releasable blocking element 17 is not located as a locking pin in the separation block, but in the region of the movable conductor portion 12 and symbolized by the reference numeral 20.
  • the thermally triggered locking element that the biasing force of the spring 15, the solder joint 11 permanently applied to the result of undesirable tensile or shear forces. Only when the melting temperature of the solder preform 20 is reached, the force path is released and it can be carried out in a known manner with further temperature increase after reaching the solder temperature with respect to the solder joint 11 of the separation process.
  • the movable conductor section 12 can be made in one piece with the right-hand plug contact 4 as a stamped and bent part and used to facilitate assembly.
  • the Fig. 3 and 4 show a third embodiment of the invention with two-stage load or defect indicator.
  • Fig. 3 This represents the state in which no critical thermal loads for the surge arrester have yet occurred and in which the blocking element 17 has not yet been triggered.
  • Fig. 3 and 4 is the thermally triggered locking element 17 part of a two-stage load or defect display, with a hinged lever arm 28 is present, the lever arm 29 engages in a locking slide 24.
  • This locking slide 24 is connected to a stop 27 of a bridge actuating part 23 in mechanical contact and locks this bridge operating part 23 in the state according to Fig. 3 ,
  • the bridge actuating member 23 is held under bias of a spring 15 and has a recess 26 in which a nose 25 of the conductive bridge 22 engages.
  • the lever arm 28 of the locking element 17 is held by a solder pin or plunger 30 as the actual thermal barrier element, the melting temperature of this solder pin or Lotbolzens 30 may be smaller than the temperature of the solder, which the bridge 22 to the respective terminal of the diverter and the plug contact 4 connects.
  • the Hebelarmende 29 engages in a groove-shaped recess of the locking slide 24 in order to take this movement side can.
  • the bias of the spring 15 can be made very large, without causing undesirable mechanical continuous load on the bridge-side solder joint or several solder joints located there.
  • this higher bias of the spring 15 causes a very rapid opening and thus separating the diverter in the load case. Due to the arrangement of the solder pin or soldering bolt 30 directly on or in the partition wall 7 and thus in the immediate vicinity of the diverter, the heat generated in this element in the load case is passed directly to the solder pin or 30, so that for a safe response of the solder material in the sense of desired thermal tripping is ensured.
  • the bridge actuation part 23 may have a tongue 33 for receiving the spring 15, which at the same time serves to guide the bridge actuation part 23 by means of spaced guide elements 34.
  • Bridge operating part 23 has this existing projections on holes 35. If a U-shaped bracket is inserted into the holes 35, regardless of the assembly of other parts, in particular the locking element 17, the execute the soldering of the bridge 22 in a particularly easy way possible. Namely, in this case, the bracket not shown in the figures blocks the movement of the bridge operating member 23 by being engaged with the outer edge of the partition wall 7. In the holes 35, a soldering pin or soldering bolt 30 can also be integrated to realize the function of locking.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuses (AREA)
  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (14)

  1. Dispositif dérivateur de surtensions (3) comprenant au moins un élément dérivateur, par exemple un varistor, ainsi qu'un dispositif de coupure, afin de séparer le ou les élément(s) dérivateur(s) à un pôle ou à tous les pôles vis-à-vis du réseau, dans lequel le dispositif de coupure comprend un emplacement de brasage (11) qui est intégré dans le trajet de raccordement électrique à l'intérieur du dispositif dérivateur, dans lequel, via l'emplacement de brasage (11), un tronçon conducteur mobile (12) ou un pontage conducteur mobile (22) est raccordé à l'élément dérivateur d'une part et au tronçon conducteur (12) ou au pontage (22) d'autre part avec un raccordement électrique extérieur du dispositif dérivateur, et comprenant en outre un ressort qui génère une force de précontrainte (15), telle que le vecteur de force qui s'y rapporte agit directement ou indirectement sur le tronçon conducteur (12) ou sur le pontage (22) dans la direction de coupure,
    caractérisé en ce que
    un élément de blocage (17) à déclenchement thermique bloque le tronçon conducteur mobile (12) ou le pontage conducteur mobile (22) vis-à-vis du vecteur de la force de précontrainte, de sorte que l'emplacement de brasage (11) du dispositif de coupure n'est exposé à aucune charge sous une force permanente.
  2. Dispositif dérivateur de surtensions (3) selon la revendication 1,
    caractérisé en ce que l'élément de blocage (17) à déclenchement thermique s'engage d'une part dans une région coudée du tronçon conducteur (12), et s'applique d'autre part contre le boîtier du dispositif dérivateur (18) ou contre la paroi de séparation (7) du boîtier du dispositif dérivateur (3) à titre de contrebutée.
  3. Dispositif dérivateur de surtensions (3) selon la revendication 1,
    caractérisé en ce que l'élément de blocage (17) à déclenchement thermique, réalisé sous forme de pièce analogue à un goujon, bloque le trajet de déplacement d'un mécanisme de surmultiplication à levier qui est agencé entre le ressort (15) et le tronçon conducteur (12).
  4. Dispositif dérivateur de surtensions (3) selon l'une des revendications précédentes,
    caractérisé en ce que l'élément de blocage (17) à déclenchement thermique est une pièce préformée en matériau de brasage à bas point de fusion.
  5. Dispositif dérivateur de surtensions (3) selon l'une des revendications précédentes,
    caractérisé en ce que le tronçon conducteur mobile (12) est réalisé sous forme de languette-ressort (33).
  6. Dispositif dérivateur de surtensions (3) selon la revendication 3,
    caractérisé en ce que le mécanisme de démultiplication à levier est en liaison avec un indicateur de défauts optique (14).
  7. Dispositif dérivateur de surtensions (3) selon l'une des revendications précédentes,
    caractérisé en ce que le tronçon conducteur mobile (12) est une pièce poinçonnée/pliée, qui possède un raccordement extérieur conformé, en particulier un raccordement enfichable (4).
  8. Dispositif dérivateur de surtensions (3) selon l'une des revendications précédentes,
    caractérisé en ce que la température d'activation de l'élément de blocage est inférieure à la température de fusion de l'emplacement de brasage (11).
  9. Dispositif dérivateur de surtensions (3) selon l'une des revendications précédentes,
    caractérisé en ce que la force de précontrainte adopte une valeur plus élevée, par comparaison au chargement permanent possible de l'emplacement de brasage (11), pour garantir en cas de perturbation un mouvement de séparation très rapide du tronçon conducteur (12) ou du pontage conducteur (22).
  10. Dispositif dérivateur de surtensions (3) selon l'une des revendications précédentes,
    caractérisé en ce que l'élément de blocage (17) à déclenchement thermique fait partie d'un indicateur de chargement ou de défauts à deux étages et comprend un bras de levier (28) monté de façon articulée, dont l'extrémité (29) s'engage dans un tiroir de blocage (25) qui est en contact mécanique avec une butée (27) d'une pièce d'actionnement de pontage (23),
    la pièce d'actionnement de pontage (23) est maintenue sous précontrainte élastique et comporte un évidement dans lequel s'engage un ergot (25) du pontage conducteur, et l'élément de blocage (17) avec son tiroir de blocage (24) encaisse, dans l'état non déclenché, la précontrainte élastique de la partie d'actionnement de pontage (23) et dérive cette précontrainte en termes de force de telle façon qu'un jeu demeure entre l'évidement (26) et l'ergot (25), et dans l'état déclenché, le tiroir de blocage (24) parvient au contraire hors du contact avec la butée (27) de la partie d'actionnement de pontage.
  11. Dispositif dérivateur de surtensions (3) selon la revendication 10,
    caractérisé en ce que le tiroir de blocage (24) est relié à un indicateur de défauts optique (14).
  12. Dispositif dérivateur de surtensions (3) selon la revendication 10 ou 11,
    caractérisé en ce que le bras de levier (28) est fixé, à titre d'élément de blocage thermique, via une tige de brasage ou un goujon de brasage (30).
  13. Dispositif dérivateur de surtensions (3) selon la revendication 12,
    caractérisé en ce que la température de fusion de la tige de brasage ou du goujon de brasage (30) est plus basse que la température de fusion de la brasure qui relie le pontage (22) au raccordement respectif de l'élément de dérivation et le contact enfichable (4).
  14. Dispositif dérivateur de surtensions (3) selon l'une des revendications 10 à 13,
    caractérisé en ce que la pièce d'actionnement de pontage (23) est reliée à un autre indicateur de défauts optique (31).
EP07717672A 2006-02-13 2007-02-12 Parafoudre comprenant au moins un element de derivation, par exemple une varistance Not-in-force EP1854109B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006006599 2006-02-13
DE102006037551A DE102006037551B4 (de) 2006-02-13 2006-08-10 Überspannungsableiter mit mindestens einem Ableitelement, beispielsweise einem Varistor
PCT/EP2007/051318 WO2007093572A1 (fr) 2006-02-13 2007-02-12 Parafoudre comprenant au moins un élément de dérivation, par exemple une varistance

Publications (2)

Publication Number Publication Date
EP1854109A1 EP1854109A1 (fr) 2007-11-14
EP1854109B1 true EP1854109B1 (fr) 2008-11-05

Family

ID=37941483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07717672A Not-in-force EP1854109B1 (fr) 2006-02-13 2007-02-12 Parafoudre comprenant au moins un element de derivation, par exemple une varistance

Country Status (7)

Country Link
EP (1) EP1854109B1 (fr)
JP (1) JP5050147B2 (fr)
CN (1) CN101361145B (fr)
AT (1) ATE413684T1 (fr)
DE (2) DE102006037551B4 (fr)
RU (1) RU2407087C2 (fr)
WO (1) WO2007093572A1 (fr)

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DE102008013448B4 (de) * 2007-10-30 2018-10-11 Dehn + Söhne Gmbh + Co. Kg Überspannungsableiter mit einem Gehäuse und mindestens einem Varistor als Ableitelement
DE102008029670B4 (de) * 2008-06-24 2016-10-20 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
DE102009053145A1 (de) * 2009-11-05 2011-05-12 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
JP5363952B2 (ja) * 2009-11-20 2013-12-11 株式会社サンコーシヤ 誤接続防止機構付き電気機器
FR2958788B1 (fr) * 2010-04-09 2015-01-30 Abb France Varistance comprenant une electrode avec une partie en saillie formant pole et parafoudre comprenant une telle varistance
DE102011118908A1 (de) * 2011-11-18 2013-05-23 Dehn + Söhne Gmbh + Co. Kg Adapter zur Montage von als Steckmodule ausgeführten Überspannungsschutzgeräten auf einem Verdrahtungsträger
FR2984006B1 (fr) * 2011-12-07 2017-05-12 Legrand France Boitier pour dispositif de protection contre les surtensions et dispositif de protection contre les surtensions associe.
CN103198985B (zh) * 2013-04-10 2015-04-22 四川中光防雷科技股份有限公司 一种电涌保护器
DE102013021936B3 (de) * 2013-10-08 2015-02-12 Dehn + Söhne Gmbh + Co. Kg Kompakte, vorkonfektionierbare Überspannungsschutzvorrichtung
DE102014008366B3 (de) * 2014-06-04 2015-10-22 Dehn + Söhne Gmbh + Co. Kg Vorrichtung zum thermischen Auslösen oder Abtrennen eines Überspannungsschutzgerätes
ITUB20152327A1 (it) * 2015-07-20 2017-01-20 Zotup S R L Disconnettore perfezionato e scaricatore di sovratensioni comprendente tale disconnettore
DE102015014163A1 (de) 2015-09-08 2017-03-09 DEHN + SÖHNE GmbH + Co. KG. Vorrichtung zum thermischen Auslösen, Abtrennen und/oder Signalisieren des Zustandes eines Überspannungsschutzgerätes
WO2018050204A1 (fr) * 2016-09-13 2018-03-22 Abb Schweiz Ag Dispositif sectionneur pour parasurtenseur et ensemble de protection comprenant un parasurtenseur connecté à un tel dispositif sectionneur
DE102017105436B3 (de) * 2017-03-14 2018-06-14 DEHN + SÖHNE GmbH + Co. KG. Thermisch auslösbare, mechanische Schalteinrichtung
DE102017129657A1 (de) 2017-07-10 2019-01-10 Dehn + Söhne Gmbh + Co. Kg Anordnung zur nicht-reversiblen Detektion und Anzeige von elektrischen Überströmen oder Stromgrenzwerten mittels eines vorkonfektionierten Leiters
CN110350501B (zh) * 2018-04-04 2022-04-05 爱普科斯电子元器件(珠海保税区)有限公司 三相电涌保护装置
DE102018131975B4 (de) 2018-12-12 2021-01-14 Dehn Se + Co Kg Thermisch auslösbare Anzeige- oder Schalteinrichtung sowie Überspannungsableiteranordnung mit einer thermisch auslösbaren Anzeige- oder Schalteinrichtung
CN111446599A (zh) * 2020-03-30 2020-07-24 隆科电子(惠阳)有限公司 一种spd插接模块、spd底座及插接型spd

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DE4000717C2 (de) * 1990-01-12 1994-12-01 Kleinhuis Hermann Gmbh Überspannungsableiter
DE4241311C2 (de) * 1992-12-08 1995-06-08 Phoenix Contact Gmbh & Co Temperaturschalter mit einem Bausteingehäuse
DE9305796U1 (fr) * 1993-04-17 1993-06-17 Dehn + Soehne Gmbh + Co Kg, 8500 Nuernberg, De
CN1163012A (zh) * 1994-11-10 1997-10-22 雷伊化学公司 电涌放电器
AT406207B (de) * 1997-09-30 2000-03-27 Felten & Guilleaume Ag Oester Steckbarer überspannungsableiter

Also Published As

Publication number Publication date
DE102006037551A1 (de) 2007-08-30
CN101361145B (zh) 2011-09-21
CN101361145A (zh) 2009-02-04
RU2008135716A (ru) 2010-03-20
ATE413684T1 (de) 2008-11-15
DE102006037551B4 (de) 2012-03-22
WO2007093572A1 (fr) 2007-08-23
EP1854109A1 (fr) 2007-11-14
JP2009527072A (ja) 2009-07-23
DE502007000217D1 (de) 2008-12-18
RU2407087C2 (ru) 2010-12-20
JP5050147B2 (ja) 2012-10-17

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