EP3061113B1 - Dispositif de protection contre les surtensions comprenant au moins un parafoudre et un interrupteur thermique en série avec le parafoudre - Google Patents

Dispositif de protection contre les surtensions comprenant au moins un parafoudre et un interrupteur thermique en série avec le parafoudre Download PDF

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Publication number
EP3061113B1
EP3061113B1 EP14784050.8A EP14784050A EP3061113B1 EP 3061113 B1 EP3061113 B1 EP 3061113B1 EP 14784050 A EP14784050 A EP 14784050A EP 3061113 B1 EP3061113 B1 EP 3061113B1
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EP
European Patent Office
Prior art keywords
surge arrester
protection device
surge
surge protection
contact
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
EP14784050.8A
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German (de)
English (en)
Other versions
EP3061113A1 (fr
Inventor
Helmut Hirschmann
Georg Wittmann
Edmund ZÄUNER
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
Priority to PL14784050T priority Critical patent/PL3061113T3/pl
Publication of EP3061113A1 publication Critical patent/EP3061113A1/fr
Application granted granted Critical
Publication of EP3061113B1 publication Critical patent/EP3061113B1/fr
Active 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/0039—Means for influencing the rupture process of the fusible element
    • H01H85/0047—Heating means
    • H01H85/0052—Fusible element and series heating means or series heat dams
    • 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
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/048—Fuse resistors
    • H01H2085/0486—Fuse resistors with voltage dependent resistor, e.g. varistor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/38—Means for extinguishing or suppressing arc
    • H01H2085/381—Means for extinguishing or suppressing arc with insulating body insertable between the end contacts of the fusible element

Definitions

  • the invention relates to an overvoltage protection device, comprising at least one surge arrester and, connected in series with the surge arrester, thermally triggered switching device, said means forming a structural unit and the thermal release means is arranged in the region of the expected heating of the surge arrester at its overload, wherein the thermal release means is formed as not flowing from the operating or surge current stop member which releases a release of the switching device in thermal overload, further the stop member is thermally and mechanically coupled to a surface side of the surge arrester and blocks the path of movement of a mechanically biased Entriegelungsschiebers, according to the preamble of the claim 1.
  • a surge arrester on Varistorbasis previously known being provided for a direct transfer of the varistor caused in the event of damage unacceptable heat to a thermal trip device.
  • a support wall is present in the plug-in part, wherein the varistor are attached to a side surface of the support wall and the thermal release and the associated switching means on the other side surface of the support wall.
  • the thermal release is opposite to the varistor.
  • one or more terminal lugs of the varistor are inserted through the partition wall into the area in which the thermal tripping and the corresponding switching means are located.
  • the leadership of the operating current or the occurring overload currents via contact means of a male part which in turn can be introduced into a base part.
  • the current passes through the switching means to the varistor in such a way that the actual thermal release agent, in particular as a solder, is also flowed through.
  • the EP 1 447 831 B1 or EP 2 065 914 A1 show identical combinations of surge plugs with additional switching devices that are either placed in a common base housing or surrounded by such a housing.
  • the solutions there have a tripping or switch-off, which is not adaptable to the particular properties of each surge arrester used, such as varistors.
  • an overvoltage protection device comprising at least one surge arrester and, with the surge arrester connected in series, thermally triggered switching device previously known.
  • the local release means is formed as not flowing from the operating or surge current stop member, which releases a release of the switching device in case of thermal overload, which has an increased self-extinguishing capacity.
  • a separating element which consists of an insulating, quenching gas-releasing material, e.g. POM can exist.
  • an overvoltage protection device comprising at least one surge arrester.
  • the surge arrester is preferably designed as a varistor.
  • the aforementioned means form a structural unit and can be comprised by a common housing.
  • the unit with housing represents a plug-in part, which can be introduced into a corresponding socket, for the purpose of mounting on or in the system to be protected.
  • the male part is easily interchangeable in case of failure and can be replaced by an intact part.
  • the thermal release means of the switching device is arranged in the region of the expected heating of the surge arrester when overloaded. With regard to the arrangement of this triggering means there is virtually a free choice, since the triggering means just does not have to be introduced into the current path of the overvoltage protection device.
  • the thermal release agent is designed as not flowing from the operating or surge current stop member which releases a release of the switching device in case of thermal overload or unlocks the switching device itself.
  • the stop member is thermal and mechanically coupled to a surface side of the surge arrester, blocking the path of travel of a particular unlocking slide.
  • the unlocking slide can be designed as a plastic injection or -Press- or -casting and is inexpensive to produce.
  • Entriegefungsschieber is mechanically biased, which can be realized by means of a spring or the like force storage device.
  • the unlocking slide e.g. has an elongated surface portion, a contact plate inserted, which produces the desired electrical connection between the elements of the switching device.
  • the dimensions of the contact plate with respect to the opening or recess of the Entriegelungsschiebers are chosen so that a secure contact with respect to the corresponding elements of the switching device is guaranteed.
  • the dimensions of the contact pad, e.g. in terms of cross-section and thickness are oriented to the desired current carrying capacity.
  • the contact plate with securing properties.
  • an element of the switching device is designed as a pin or bolt, which is under mechanical bias in the direction of the further element of the switching device.
  • This further element is a mating contact, which is electrically connected to the terminal side of the surge arrester, for example a varistor.
  • connection bracket can simultaneously represent the outer plug connection of the plug-in part designed as a surge arrester.
  • a rocker having elastic properties e.g. also designed as a plastic injection molded part, provided which is mounted with a first rocker end at a fixed point.
  • This fixed point can be realized by elements of the housing of the male part.
  • a second rocker end engages a movable stop.
  • the elastic properties having rocker can also consist of a metallic material with correspondingly elastic properties. Also conceivable is an embodiment of the rocker as a composite element made of plastic and metal. The decisive factor is that for the application of the invention, the rocker is able to act as a force storage, without a removal or breaking away of parts of the rocker is the case.
  • the movable stop is part of a pivot arm, wherein the pivot arm has a shape which rests on the stop member.
  • This shape can e.g. be a nose, which is an integral part of the swivel arm.
  • the swivel arm can be realized as a plastic injection molded part.
  • the unlocking slide according to the invention has a locking arm, which is blocked in the non-triggered state by the pivot arm.
  • the pivot arm has a guide recess for a pivot pin, wherein the pivoting movement of the pivot arm about the axis of the axle bolt is executable.
  • the axle may be an integral part of the housing and may be e.g. extend perpendicularly from a housing center surface to receive according to the pivot arm with there foundedsaus supraung.
  • the pivotal arm further includes a pin extension that can penetrate a recess in the bottom of the housing and interact with a fault signaling device.
  • the unlocking slider itself is movably mounted in a guide member, wherein the guide member has a space for receiving a spring for the purpose of the spring bias of the release slide.
  • the guide member is placed on the desired electrical properties and dimensioned and in this respect consists of appropriately suitable insulation materials that may differ from the material of other parts, in particular of the housing. Thus, only the parts of possibly more costly materials must be made, which are subject to a corresponding electrical load.
  • Both the guide member and the unlocking slider may be made of an insulating, gas-emitting material, e.g. POM exist.
  • the release slide has a status display area. This includes e.g. to the top of the housing of the male part and there presents a display surface, e.g. Green or red, for condition "OK" or "defective" free.
  • a display surface e.g. Green or red
  • the surge arrester is expediently a varistor which has a surface side which has metallic, conductive properties. From this surface side, e.g. may be a flat piece of metal, extending a smaller area piece, forming the mating contact, preferably perpendicular to the corresponding surface plane.
  • the above-mentioned surface side fixing surfaces which for example also extend perpendicularly from the surface plane and engage in complementary recesses of a corresponding housing part to fix the varistor.
  • a further contact of the varistor is present, which communicates with a further connection bracket, which also merges into an external electrical connection of the plug-in part of the respective overvoltage protection device.
  • the overvoltage protection device initially consists of a surge arrester 1, in particular a varistor 1, with a corresponding surface side 2.
  • a stop member 4K is fixed on the surface side 2 of the varistor 1.
  • This stop member 4K is e.g. fixed with a solder on the corresponding surface side 2.
  • the solder which connects the stopper part 4K to the surface side 2 melts.
  • the stop member 4K then performs a movement in the arrow direction.
  • an unlocking slider 6 is mounted displaceably movable, wherein the unlocking slide 6 is under bias of a spring 61.
  • the spring bias causes the release slide 6 is caused, in the absence of a stop relative to the Fig. 1 to 4 to move to the right. This is with the corresponding arrow representation within the part 6 in the Fig. 1 and 2 symbolizes.
  • a first element is designed as a pin or pin 11, which stands under mechanical bias, symbolized by the spring XX, in the direction of the other element 10.
  • This further element 10 forms a mating contact, which is electrically connected to the connection side 2 or the corresponding surface side and a conductive part of the surge arrester 1 present there.
  • the part 9 can form the connecting bracket or a plug-in contact simultaneously with a lower end shown in the figures. In normal operating condition according to Fig. 1 the current path is closed via the parts 9, 11, 111 and 10.
  • the part 111 is preferably a contact plate which is embedded in a respective recess of the unlocking slide 6. This contact plate 111 thus provides the desired connection between the terminal bracket 9 and the mating contact 10, which communicates with the varistor, ago.
  • the stopper 4K releases and then comes to a position similar to that in FIG Fig. 2 shown.
  • the unlocking slide 6 can move in the image direction to the right.
  • the result is that the contact pad 111 is also shifted out of the current path to the right.
  • the contact plate now enters an insulating section of the release slide in the space becoming vacant and ensures a very high self-extinguishing capacity.
  • the corresponding portion of the Entriegelungsschiebers 6 may consist of a gas-emitting material, such as POM, which improves the extinguishing properties and counteracts the occurrence of arcing. Characterized in that the thermal release means 4K according to its original position Fig.
  • the pivot arm 4 can move to the right according to the drawn arrow.
  • the biasing force by means of symbolically represented spring XX loses its effect.
  • a rocker XX is present, which has elastic properties. The rocker generates a corresponding bias voltage in the Fig. 1 and 2 still with the symbolized spring is symbolized.
  • a first rocker end is mounted at a fixed point X1.
  • a second rocker end engages the movable stop X2 of the swivel arm 4.
  • the movable stop X2 is thus part of the pivot arm 4, wherein the pivot arm 4 is still a formation X3 (see Fig. 3 and 4 ), which rests on the stop member or release means 4K.
  • the unlocking slide 6 also comprises a locking arm X4, which in the non-triggered state of the pivot arm 4 and an existing there end, seen in particular in the Fig. 3 , is blocked.
  • the pivot arm 4 has a guide recess 41 for a pivot pin, not shown in the figures, wherein the pivotal movement of the pivot arm 4 is executable about the axle.
  • the pivot arm 4 also has a pin extension 42, which penetrates a recess in the bottom of the housing, not shown, and can interact with a fault signaling device, also not shown.
  • the unlocking slide 6 is movably mounted in the guide part 3, wherein the guide member 3 has a space for receiving the spring 61.
  • the Fig. 3 and 4 also show the state indicator surface 62 formed on the unlocking slide 6 or formed on it.
  • Another terminal bracket 92 is connected to a further contact 93 of the surge arrester 1.
  • the surge arrester 1 has a plurality of fixing surfaces 94, e.g. formed as metallic bends, which engage in complementary recesses of a housing part, not shown, and hold the varistor there.

Claims (10)

  1. Dispositif de protection contre les surtensions, comportant au moins un dérivateur de surtension (1) et un moyen de commutation (9 ; 10 ; 11) connecté en série avec le dérivateur de surtension (1) et déclenchable par voie thermique, les moyens mentionnés constituant une unité structurelle et le moyen de déclenchement thermique (4k) étant agencé dans la zone de l'échauffement à attendre du dérivateur de surtension (1) lors de sa surcharge,
    dans lequel le moyen de déclenchement thermique (4k) est réalisé sous la forme d'une pièce de butée qui n'est pas traversée par le courant de fonctionnement ou de choc, qui, lors d'une surcharge thermique, autorise un déverrouillage du moyen de commutation, et la pièce de butée (4k) est couplée thermiquement et mécaniquement à un côté de surface (2) du dérivateur de surtension (1) et bloque le trajet de mouvement d'un poussoir de déverrouillage (6) précontraint mécaniquement (61), et une plaquette de contact (111) est mise en place dans le poussoir de déverrouillage (6), qui établit une connexion électrique entre les éléments (10 ; 11) du moyen de commutation, et par déverrouillage la plaquette de contact (111) est soumise à un mouvement de translation avec pour conséquence une interruption de la connexion en série du moyen de commutation ainsi qu'un déplacement du poussoir de déverrouillage (6) jusque dans l'espace qu'occupait avant la plaquette de contact (111), et au moins la portion de la zone du poussoir de déverrouillage séparant les éléments du moyen de commutation est réalisée isolante,
    dans lequel
    l'élément (11) du moyen de commutation est réalisé sous forme de tige ou de goujon (10) qui est sous précontrainte mécanique en direction de l'élément (11), ce dernier étant un contact antagoniste qui est connecté électriquement à une surface de branchement du dérivateur de surtension (1), et la tige ou le goujon (10) est relié(e) à un étrier de branchement (9),
    caractérisé en ce que
    il est prévu une bascule (XX) ayant des propriétés élastiques, qui est montée par une première extrémité à un point fixe (X1) et qui attaque par une seconde extrémité une butée mobile (X2).
  2. Dispositif de protection contre les surtensions selon la revendication 1,
    caractérisé en ce que
    la butée mobile (X2) fait partie d'un bras pivotant (4), le bras pivotant (4) possédant une conformation (X3) qui prend appui contre la pièce de butée (4k).
  3. Dispositif de protection contre les surtensions selon la revendication 2,
    caractérisé en ce que
    le poussoir de déverrouillage (6) comprend un bras de blocage (X4) qui bloque dans l'état non déclenché du bras pivotant (4).
  4. Dispositif de protection contre les surtensions selon la revendication 3,
    caractérisé en ce que
    le bras pivotant (4) comprend un évidement de guidage (41) pour un boulon d'axe, le mouvement de pivotement pouvant avoir lieu autour du boulon d'axe.
  5. Dispositif de protection contre les surtensions selon l'une des revendications 2 à 4,
    caractérisé en ce que
    le bras pivotant (4) comprend un prolongement de tige (42) qui traverse un évidement au fond d'un boîtier et qui vient en interaction avec un système de télé-avertissement d'erreur.
  6. Dispositif de protection contre les surtensions selon la revendication 3,
    caractérisé en ce que
    le poussoir de déverrouillage (6) est monté mobile dans une pièce de guidage (3), et la pièce de guidage (3) possède un espace pour recevoir un ressort (61).
  7. Dispositif de protection contre les surtensions selon l'une des revendications 3 à 6,
    caractérisé en ce que
    le poussoir de déverrouillage (6) possède une surface d'affichage d'état (62).
  8. Dispositif de protection contre les surtensions selon l'une des revendications 1 à 7,
    caractérisé en ce que
    le dérivateur de surtension est une varistance qui possède un côté de surface (2) qui présente des propriétés métalliques conductrices et depuis lequel s'étend un élément surfacique formant le contact antagoniste (10).
  9. Dispositif de protection contre les surtensions selon l'une des revendications 1 à 8,
    caractérisé en ce que
    un autre étrier de branchement (92) est relié à un contact (93) du dérivateur de surtension (1).
  10. Dispositif de protection contre les surtensions selon l'une des revendications précédentes,
    caractérisé en ce que
    des surfaces de fixation (94) se trouvent sur le dérivateur de surtension (1), qui viennent s'engager dans des échancrures complémentaires d'une partie de boîtier.
EP14784050.8A 2013-10-22 2014-10-13 Dispositif de protection contre les surtensions comprenant au moins un parafoudre et un interrupteur thermique en série avec le parafoudre Active EP3061113B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14784050T PL3061113T3 (pl) 2013-10-22 2014-10-13 Urządzenie zabezpieczające przed przepięciami zawierające co najmniej jeden ogranicznik przepięć i jedno urządzenie przełączające wyzwalane termicznie połączone szeregowo z ogranicznikiem przepięć

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102013017597 2013-10-22
DE102013019390.7A DE102013019390B4 (de) 2013-10-22 2013-11-18 Überspannungsschutzeinrichtung, aufweisend mindestens einen Überspannungsableiter und eine, mit dem Überspannungsableiter in Reihe geschaltete, thermisch auslösbare Schalteinrichtung
PCT/EP2014/071834 WO2015058985A1 (fr) 2013-10-22 2014-10-13 Dispositif de protection contre les surtensions, comprenant au moins un dérivateur de surtension et un dispositif de commutation pouvant être déclenché thermiquement, monté en série avec le dérivateur de surtension

Publications (2)

Publication Number Publication Date
EP3061113A1 EP3061113A1 (fr) 2016-08-31
EP3061113B1 true EP3061113B1 (fr) 2017-12-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14784050.8A Active EP3061113B1 (fr) 2013-10-22 2014-10-13 Dispositif de protection contre les surtensions comprenant au moins un parafoudre et un interrupteur thermique en série avec le parafoudre

Country Status (6)

Country Link
US (1) US10049795B2 (fr)
EP (1) EP3061113B1 (fr)
CN (1) CN105765686B (fr)
DE (3) DE202013012174U1 (fr)
PL (1) PL3061113T3 (fr)
WO (1) WO2015058985A1 (fr)

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DE202018106960U1 (de) * 2018-02-27 2019-01-03 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzanordnung, bestehend aus einer in einem isolierenden Gehäuse befindlichen Hörnerfunkenstrecke
DE102018114564B4 (de) 2018-06-18 2023-01-19 Dehn Se Überspannungsableiter
DE102018125520A1 (de) 2018-10-15 2020-04-16 Dehn Se + Co Kg Überspannungsschutzgerät mit mehreren Überspannungsableitern und diesen jeweils zugeordneter, insbesondere thermischer, Abtrennvorrichtung
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
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Publication number Publication date
US20160240290A1 (en) 2016-08-18
PL3061113T3 (pl) 2018-05-30
DE202013012174U1 (de) 2015-07-02
WO2015058985A1 (fr) 2015-04-30
CN105765686A (zh) 2016-07-13
DE102013022348A1 (de) 2015-07-30
CN105765686B (zh) 2018-02-16
DE102013019390A1 (de) 2015-04-23
US10049795B2 (en) 2018-08-14
DE102013022348B4 (de) 2016-01-07
EP3061113A1 (fr) 2016-08-31
DE102013019390B4 (de) 2016-01-07

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