EP2294589A1 - Appareil de protection contre les surtensions avec dispositif de séparation thermique - Google Patents

Appareil de protection contre les surtensions avec dispositif de séparation thermique

Info

Publication number
EP2294589A1
EP2294589A1 EP09757425A EP09757425A EP2294589A1 EP 2294589 A1 EP2294589 A1 EP 2294589A1 EP 09757425 A EP09757425 A EP 09757425A EP 09757425 A EP09757425 A EP 09757425A EP 2294589 A1 EP2294589 A1 EP 2294589A1
Authority
EP
European Patent Office
Prior art keywords
overvoltage protection
protection device
housing
finger
varistor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09757425A
Other languages
German (de)
English (en)
Other versions
EP2294589B1 (fr
Inventor
Sascha Ludewig
Markus Sellerer
Georg Wittmann
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 PL09757425T priority Critical patent/PL2294589T3/pl
Publication of EP2294589A1 publication Critical patent/EP2294589A1/fr
Application granted granted Critical
Publication of EP2294589B1 publication Critical patent/EP2294589B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

Definitions

  • the invention relates to an overvoltage protection device with thermal separation device and fault indication and a plurality, in particular disc-shaped varistors, each Ableitpfad at least one varistor is assigned and the thermal separation points in series with each varistor, a device housing with chambers for receiving the varistors and a pivotally mounted lever with a display surface which is located in the region of a housing window, through the housing bottom reaching plug-in connections to produce an electrical connection to a base part, further wherein the thermal separation points each comprise a spring-biased bracket which electrically and mechanically connected to a low-melting solder with the respective varistor is, according to the preamble of claim 1.
  • the local overvoltage arrester has a lower part, which is electrically connected to inlets and outlets of the system to be protected or the device to be protected. Furthermore, a plug-in part is present, which has at least one varistor.
  • the male part is detachable by a mechanical plug connection with the lower part and thereby electrically connected, wherein on the male part a thermal release is provided in the event of inadmissible heating of the varistor.
  • a support wall is provided, wherein the varistor are attached to a side surface of the support wall and the thermal separation device and corresponding switching means on the other side surface of the support wall. The thermal tripping is thus opposite the varistor.
  • the previously known plug-in part has a trough-shaped design, wherein the bottom of the tub forms the aforementioned support wall and the tub rim adjusts the area. surrounds the supporting wall, in which the mounted on the supporting wall varistor is located.
  • the varistor itself is equipped with two terminal lugs, which serve the electrical connection, with a terminal lug is in communication with the thermal release element.
  • two or more varistors housed in a housing are present as protective elements whose ground-line-side electrodes are connected to one another by a strip with a contact piece in an electrically conductive manner.
  • the network-side electrodes are connected to contact pieces via cut-off devices connected in series with protective elements.
  • the object to be solved is to simplify the separating device without impairing the protective properties adversely.
  • the protective elements according to EP 0 727 091 are used in chambers provided in a housing part of the overvoltage protection device, open at the top, and surrounded with a potting compound in these chambers.
  • the separating device is held under tension by means of a compression spring.
  • At least two varistors are present and, in addition, release agents are provided which act against the supply of voltage. stood the varistors, especially sensitive in thermal terms. Each of the varistors can be separated individually.
  • the mechanical visualization means comprise a rotor, which is actuated by separating tongues of two varistors mounted in parallel, wherein the rotor has two steps with driving fingers, one of which is rigid and more fingers are flexible.
  • the separation device for the overvoltage protection device should be designed so that in a particularly advantageous manner commercially wired Scheibenvaristoren can be used.
  • an overvoltage protection device with thermal cut-off device and fault indication which has a plurality of, in particular disc-shaped varistors.
  • Each discharge path is assigned at least one varistor and the thermal separation points lie in each case in he to the relevant varistor.
  • a device housing with chambers for receiving the varistors is present.
  • a pivotally mounted bracket has a display surface which is located in the region of a housing window in order to visualize an error or an o. K state. Through the housing bottom plug-in connections rich enough to establish an electrical connection to a base part.
  • the thermal separation points each comprise a spring-biased bracket, which is electrically and mechanically connected to the respective varistor with a low-melting solder.
  • the spring-biased stirrups are formed by a single stamped and bent part which, starting from a common connecting leg, has finger-like extensions corresponding to the number of separating points.
  • At least one plug connection is provided on the connecting leg, which leads through the housing bottom and forms an external connection to the aforementioned base part.
  • the finger-like extensions have in the region of their free end a slot-shaped recess, in each of which a connection wire or a connecting leg of a varistor is soldered directly.
  • a heat trap is located, wherein each finger-like extension is acted upon by a separate spring force.
  • a connecting leg or a connecting wire of the relevant varistor is bent in a U-shape and soldered to the U-leg in the slot-shaped recess. The closed leg points to the finger-like extension and the leg end to the top.
  • the pivotally mounted lever for the error display has a lever arm which engages in a space below the finger-like projections to take in the separation process by the respective moving extension, d. H. to be pressed.
  • the pivotally mounted lever is held by a spring element in a desired position, wherein the spring biasing force of the relevant thermal separation points is greater than the holding force of the spring element of the Lever.
  • This holding force only serves to hold the display surface in its initial position, as long as a fault-free state is present.
  • Each finger-like projection has a bore for receiving a guide pin, wherein a helical spring is arranged on the guide pin, which on the one hand is supported against a clamping device and on the other hand exerts the desired spring force on the finger-like extension.
  • the tensioner is releasably connected to the housing.
  • the tensioning device comprises the aforementioned guide pins, wherein an edge of the tensioning device engages in claw-like projections of the chambers, which are part of the housing.
  • Ausgestaltend a contact point for the attachment of another arrester, in particular a Gasabieiters be formed on the connecting leg.
  • the pivotable lever comprises in a preferred embodiment, a pin which engages in a recess of the housing bottom to operate in the fault or separation case located in the base part telecommunications switch.
  • the spring element for the positioning of the pivotally mounted lever is preferably a bending spring, which is supported with one end on the housing and which is inserted with its other end into a recess in the lever.
  • the pivotable lever is oriented or arranged on one side of the housing and the chambers on the opposite side of the housing, so that a separate mounting of the lever after insertion and soldering of the varistors can be carried out. This also makes it easier to assemble.
  • the respective heat trap which is located on the finger-like projections, is preferably formed as a transversely to the longitudinal extent of the respective finger-like projection realized recess.
  • the finger-like projections have a embossing point for the targeted Abwinkein, in the transition region connecting leg / respective finger-like extension.
  • Slot-shaped clamps or claws extend in the direction of the housing interior from the housing bottom, wherein the connecting limb is inserted and fixed in the slots. This measure also serves to facilitate the installation of the overvoltage protection device.
  • Fig. 1 a side view of the overvoltage protection device (plug-in part) with removed housing cap and recognizable chamber with varistor disk;
  • FIG. 2 is another side view similar to FIG. 1 is opposite, with the pivotally mounted lever whose lever arm engages in the space below the finger-like projections;
  • FIG 3 is a plan view of the overvoltage protection device without housing cap with the recognizable chambers and accommodated therein, already soldered varistors.
  • Fig. 5 not yet angled at the embossing points stamped part, which consists of a connecting leg and in the example shown three finger-like extensions, a contact point for a Gasabieiter and a contact for electrical connection to the lower part (base) consists.
  • the overvoltage protection device shown in FIGS. 1 to 3 without housing cap consists of a housing 1, which has a plurality of chambers with chamber walls 2.
  • the given between the chamber walls 2 spaces take on disc-shaped varistors 3.
  • an overvoltage protection device with three varistors 3 and an additional Gasabieiter 4 is shown, wherein the Gasabieiter the parallel-connected varistors for the phases Ll, L2 and L3 is connected in series and clamped on PE.
  • the housing bottom 5 penetrate various plug-in connections 6 in order to produce an electrical connection to the base part (not shown).
  • the varistors 3 have common wire connections.
  • One of the wire terminals 7 is bent in a U-shape and engages with its U-connection leg in a recess 8 in each case a finger-like projection 9 a.
  • a pivotally mounted lever 10 is located, which has a display surface 11 which is associated with a viewing window in the housing cap, not shown.
  • the pivotally mounted lever 10 is guided by a stub axle 12.
  • a bore 13 is present in the lever 10.
  • Springs 14 provide the necessary bias of the finger-like projection 9 and thus a force on the solder separation point in the region of the recess. 8
  • the spring-biased extensions or brackets 9 are formed by stamped and bent parts (see FIG. 5) which, starting from a common connecting leg 15, have the finger-like extensions 9. On the connecting leg 15, one of the plug-in connections 6 can be formed.
  • the finger-like extensions 9 have, in the region of their free end, the slot-like recess 8 already mentioned, into which in each case directly a connecting wire or a connection leg of a varistor 3 is soldered.
  • a heat trap 16 In the area behind the solder joint in the direction of connecting leg 15, a heat trap 16 is located in the form of a transverse punched. Embossing points 17 serve the targeted Abwinkein of the stamped part, so that it in Figs. 1 and 3 recognizable form receives.
  • the punched-bent part may still have a special contact point 18, u m to contact the Gasabieiter 4 by soldering.
  • the pivotally mounted lever 10 has a lever arm 19 (see Fig. 4), which engages in a space below the finger-like extensions 9 (see Fig. 2) to be taken during the separation process by the respective moving extension and in the illustration as shown in FIG. 2 to cause a pivoting of the lever to the right.
  • the display surface 11 leaves its position and it is an underlying, color differently represented field released to optically signal the error condition.
  • the pivotally mounted lever 10 is held by a spring element 20 in the form of a spiral spring in a desired position, wherein the spring biasing force of this bending spring is smaller than the spring biasing force of the respective thermal separation points.
  • Each of the finger-like extensions 9 has a bore 21 which serves to receive a guide pin 22.
  • On the guide pin 22 one of the coil springs 14 is attached, which is supported against a clamping device 23 which is detachably connected to the housing 1.
  • each guide pin 22 receives a coil spring 14.
  • An edge 24 of the clamping device 23 engages in claw-like projections 25, which are integrally formed on the chambers or chamber walls 2.
  • the pivoting lever 10 has a pin 26 which engages in a recess 27 in the housing base 5 in order to operate in the fault or separation case located in the base part (not shown) remote switch.
  • the spiral spring element 20 is supported at its one end on the housing or as shown on the clamping device 23 and is inserted with its other end into a recess in the lever 10 and thereby guided safely.
  • pivoting lever 10 are arranged on one of the housing sides and the chambers on the other side of the housing, so that a separate mounting of the lever 10 after insertion and soldering of the varistors 3 can take place ,
  • three (but also several) separating devices can be realized by a single stamped and bent part.
  • the stamped part also provides the electrical connection to the lower part and may comprise a contact point for a further arrester, in particular a gas absorber.
  • the design of the finger-like extension allows in conjunction with a molded on the application Varistoran gleichdraht and using a low-temperature Lotlots a very sensitive separation point.
  • a particular advantage lies in the fact that a use of commercially available wire-wound disk varistors is possible.
  • the display is realized with little mechanical effort and responds to the independently acting separating devices in the sense of an OR operation.
  • the display block or the lever also fulfills the option of controlling a telecommunications contact.
  • the actual separating device consists, as explained, of a sheet-metal part with at least three finger-like extensions (separating strips), an extension for an electrical connection to the lower part in the form of a fork contact and, optionally, a contact point for a gas absorber.
  • Each separation strip forms the electrical contact with each of a varistor and is equipped with a stamping for flexibility.
  • the separation strip also has a guide hole for the tensioning device and a transverse slot as a heat trap and a longitudinal slot for receiving the varistor connection wire.
  • the longitudinal slot forms a connection with a loop-shaped varistor connecting wire and a low-melting solder the separation point.
  • the bias of the tensioning device causes the separation of the varistor from the separation strip during melting of the solder, which in turn actuates the display block via the lever.

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)
  • Thermally Actuated Switches (AREA)

Abstract

L'invention concerne un appareil de protection contre les surtensions avec dispositif de séparation thermique et témoin de défaillance (11) ainsi qu'avec plusieurs varistors (3), en particulier en forme de disques. Chaque chemin de dérivation est associé à au moins un varistor et les points de séparation thermique (4) sont montés en série avec le varistor correspondant. Le boîtier de l'appareil (1) comporte des chambres (2) recevant les varistors. Il est par ailleurs prévu un levier (10) monté pivotant, avec une surface témoin (11), la surface témoin se trouvant au niveau d'une fenêtre dans le boîtier. Le fond du boîtier est traversé par des connexions enfichables (6) pour établir une liaison électrique avec un module de base. Les points de séparation thermique comprennent chacun un arceau (9) précontraint par un ressort (14) relié électriquement et mécaniquement au varistor correspondant par une soudure à faible point de fusion. Les arceaux précontraints par ressort sont formés d'une pièce estampée et courbée qui présente des prolongations (9) en forme de doigts à partir d'une branche de liaison commune. Au moins une connexion enfichable est prévue sur la branche de liaison commune. Les prolongations en forme de doigts possèdent au niveau de leur extrémité libre une ouverture (8) en forme de fente dans laquelle est soudé directement un fil de raccordement ou une patte de raccordement d'un varistor. Par ailleurs, au-delà du point de soudure dans la direction de la branche de liaison se trouve un piège thermique et chaque prolongation en forme de doigt est sollicitée par une force élastique distincte.
EP09757425.5A 2008-06-03 2009-05-27 Appareil de protection contre les surtensions avec dispositif de séparation thermique Not-in-force EP2294589B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09757425T PL2294589T3 (pl) 2008-06-03 2009-05-27 Ogranicznik przepięć z termicznym odłącznikiem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008026555.1A DE102008026555B4 (de) 2008-06-03 2008-06-03 Überspannungsschutzgerät mit thermischer Abtrennvorrichtung
PCT/EP2009/056470 WO2009147043A1 (fr) 2008-06-03 2009-05-27 Appareil de protection contre les surtensions avec dispositif de séparation thermique

Publications (2)

Publication Number Publication Date
EP2294589A1 true EP2294589A1 (fr) 2011-03-16
EP2294589B1 EP2294589B1 (fr) 2015-10-21

Family

ID=41008993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09757425.5A Not-in-force EP2294589B1 (fr) 2008-06-03 2009-05-27 Appareil de protection contre les surtensions avec dispositif de séparation thermique

Country Status (7)

Country Link
EP (1) EP2294589B1 (fr)
CN (1) CN102057449B (fr)
DE (1) DE102008026555B4 (fr)
ES (1) ES2559754T3 (fr)
PL (1) PL2294589T3 (fr)
RU (1) RU2010150289A (fr)
WO (1) WO2009147043A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017211578A1 (fr) * 2016-06-10 2017-12-14 Dehn + Söhne Gmbh + Co. Kg Dispositif de protection contre les surtensions comportant plusieurs varistances en forme de disque disposés sur un premier côté d'une plaque de support à n côtés

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US8502637B2 (en) * 2010-09-22 2013-08-06 Thomas & Betts International, Inc. Surge protective device with thermal decoupler and arc suppression
DE102011122863B3 (de) * 2010-10-29 2016-06-02 DEHN + SÖHNE GmbH + Co. KG. Verfahren zur Ausbildung einer thermischen Trennstelle
AT512255A1 (de) * 2011-12-09 2013-06-15 Eaton Ind Austria Gmbh Überspannungsableiter
DE102012011241A1 (de) * 2012-06-06 2013-12-12 Phoenix Contact Gmbh & Co. Kg Kontaktelement für einen Varistor
DE102012022399A1 (de) * 2012-11-16 2014-05-22 Phoenix Contact Gmbh & Co. Kg Zündkreis
US9906017B2 (en) * 2014-06-03 2018-02-27 Ripd Research And Ip Development Ltd. Modular overvoltage protection units
JP6474230B2 (ja) * 2014-10-31 2019-02-27 株式会社サンコーシヤ サージ防護システム
US10319545B2 (en) 2016-11-30 2019-06-11 Iskra Za{hacek over (s)}{hacek over (c)}ite d.o.o. Surge protective device modules and DIN rail device systems including same
US10447026B2 (en) 2016-12-23 2019-10-15 Ripd Ip Development Ltd Devices for active overvoltage protection
US10707678B2 (en) 2016-12-23 2020-07-07 Ripd Research And Ip Development Ltd. Overvoltage protection device including multiple varistor wafers
US10340110B2 (en) 2017-05-12 2019-07-02 Raycap IP Development Ltd Surge protective device modules including integral thermal disconnect mechanisms and methods including same
US10685767B2 (en) 2017-09-14 2020-06-16 Raycap IP Development Ltd Surge protective device modules and systems including same
DE102017124219A1 (de) * 2017-10-18 2019-04-18 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzgerät
US11223200B2 (en) 2018-07-26 2022-01-11 Ripd Ip Development Ltd Surge protective devices, circuits, modules and systems including same
DE102018125520A1 (de) 2018-10-15 2020-04-16 Dehn Se + Co Kg Überspannungsschutzgerät mit mehreren Überspannungsableitern und diesen jeweils zugeordneter, insbesondere thermischer, Abtrennvorrichtung
DE102019110745B3 (de) 2019-04-25 2020-10-08 Dehn Se + Co Kg Überspannungsschutzvorrichtung sowie modulares Überspannungsschutzsystem
DE102020107318B4 (de) 2020-03-17 2023-06-22 Dehn Se Überspannungsschutzvorrichtung sowie modulares Überspannungsschutzsystem
US11862967B2 (en) 2021-09-13 2024-01-02 Raycap, S.A. Surge protective device assembly modules
US11723145B2 (en) 2021-09-20 2023-08-08 Raycap IP Development Ltd PCB-mountable surge protective device modules and SPD circuit systems and methods including same
US11990745B2 (en) 2022-01-12 2024-05-21 Raycap IP Development Ltd Methods and systems for remote monitoring of surge protective devices
US20240087779A1 (en) * 2022-09-14 2024-03-14 Applied Research Associates, Inc. Surge arresting power cable

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2017211578A1 (fr) * 2016-06-10 2017-12-14 Dehn + Söhne Gmbh + Co. Kg Dispositif de protection contre les surtensions comportant plusieurs varistances en forme de disque disposés sur un premier côté d'une plaque de support à n côtés
US10629399B2 (en) 2016-06-10 2020-04-21 Dehn Se + Co Kg Overvoltage protection arrangement having a plurality of planar varistors arranged on a first side of an N-cornered supporting plate

Also Published As

Publication number Publication date
DE102008026555A1 (de) 2009-12-10
CN102057449B (zh) 2012-09-05
EP2294589B1 (fr) 2015-10-21
ES2559754T3 (es) 2016-02-15
PL2294589T3 (pl) 2016-04-29
RU2010150289A (ru) 2012-07-20
DE102008026555B4 (de) 2016-08-04
CN102057449A (zh) 2011-05-11
WO2009147043A1 (fr) 2009-12-10

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