EP2386108B1 - Überspannungsableiter mit einem optischen fehlerindikator - Google Patents

Überspannungsableiter mit einem optischen fehlerindikator Download PDF

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Publication number
EP2386108B1
EP2386108B1 EP09760893A EP09760893A EP2386108B1 EP 2386108 B1 EP2386108 B1 EP 2386108B1 EP 09760893 A EP09760893 A EP 09760893A EP 09760893 A EP09760893 A EP 09760893A EP 2386108 B1 EP2386108 B1 EP 2386108B1
Authority
EP
European Patent Office
Prior art keywords
slide
surge arrester
disconnection
spring
thermal
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
EP09760893A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2386108A1 (de
Inventor
Richard Daum
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 PL09760893T priority Critical patent/PL2386108T3/pl
Priority to SI200930401T priority patent/SI2386108T1/sl
Publication of EP2386108A1 publication Critical patent/EP2386108A1/de
Application granted granted Critical
Publication of EP2386108B1 publication Critical patent/EP2386108B1/de
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

Definitions

  • the invention relates to a surge arrester which comprises in a housing at least one dissipation element, in particular a varistor, a solder-fixed thermal separation point, which is in communication with the discharge element, and a damage display device for displaying the fault state, wherein the damage display device additionally the state of a thermal shutdown device, in particular Fuse, interrogates and presents the possible fault conditions of the diverter element and the shutdown device mechanically in an OR operation in a suitable optical manner, furthermore the thermal shutdown device comprises a movable component which is fixed by a detector wire and released after melting or destroying this wire, according to Preamble of claim 1.
  • Surge arrester with at least one voltage-dependent resistor and thermal shutdown devices which consist of a fuse strip and a thermal release with eutectic fusible alloy, wherein with separation of the fuse strip or the thermal release by spring force a damage indicator moved and thus made visible, are for example from DE 77 19 678 U1 known.
  • a damage indicator bearing plate, the fuse strip, the thermal release and an adjoining voltage-dependent resistor are electrically and mechanically connected in series or attached to each other.
  • the aforementioned components, including an additionally provided in the series arrangement spark gap are housed in a common housing.
  • a release spring is supported between a base plate and the damage indicator plate. Between the two plates mentioned above, the securing strip, including the soldering point, is firmly clamped and is thus constantly under tension resulting from the release spring. There is a risk here that under mechanical stress, the tensioned tension strip tears open.
  • the document CN-Y-201331984 discloses a surge arrester, which in a housing at least one dissipation element, in particular varistor ("voltage dependent resistor"), a solder fixed thermal separation point, which communicates with the discharge element, and a damage display device for displaying error conditions ("warning of indicator”) having.
  • the moving parts are under pressure by springs.
  • the DE 195 45 505 C1 shows a surge arrester with varistor and thermal shutdown devices, where there is a shock-resistant fuse strip in a fuse box with metallic end caps arranged and electrically and mechanically connected to the end caps.
  • the damage indicator is a separate, releasably secured to the fuse housing and after releasing this attachment by a spring movable relative to the fuse housing component.
  • the arrangement is designed such that upon melting of the fuse strip, the attachment of the damage indicator is released and released within the fuse housing.
  • the thermal release is located after DE 195 45 505 outside the fuse box and is in a thermally conductive connection with the varistor.
  • the thermal release and the heat-conducting connection are designed in such a way that, if the varistor is heated excessively, the thermal tripping is separated and thus a damage indication is displayed.
  • the tree space reduction is the measure that in the case of thermal release, a displacement of the fuse housing is made by spring force, preferably the same spring is used, which is already provided for moving the display after melting the fuse strip and the indicator wire.
  • the fuse strip of the fuse is dimensioned such that it melts and triggers only in the event of a defective arrester or overload due to the resulting, correspondingly high short-circuit current. According to the prior art teaching causes this trigger that the attachment of the damage indicator is removed or released on the fuse box.
  • the thermal release in the form of a eutectic solder joint after DE 195 45 505 C1 serves to interrupt the flow of current through the device when the varistor is heated too high.
  • the previous firm hold of the fuse housing is canceled in a corresponding position due to the melting of the solder of the thermal release.
  • springs move the complete fuse box to a new position, which also causes the damage indicator to change position accepts. It must therefore be moved in any case, the complete fuse box, which naturally requires quite high spring forces.
  • a surge arrester has at least one diverting element, in particular a varistor, a solder-fixed thermal separation point, which is connected to the diverting element, and a damage indicator device for displaying the fault state.
  • the damage display device queries the state of a thermal shutdown device, in particular a fuse, and mechanically presents the possible fault states of the diverter element and the shutdown device in an OR operation, at least optically or additionally via a telecommunications function.
  • the thermal shutdown device comprises a movable component which is fixed by a detector wire and released after melting or destroying this wire.
  • a guide member for a compression spring or the like power storage is provided on or in the housing.
  • a first spring end acts directly or indirectly on a separating ram or separating cylinder on the thermal separation point and a second, the first end opposite the spring end of the force accumulator acts directly or indirectly via a guide ring on a slider.
  • the slider is acted upon at a first side directly by another spring in the direction of displacement or indirectly via the damage indicator device with a force.
  • the first side opposite the second side of the slide is in operative connection with the movable component of the thermal shutdown device, that under the action of force of the compression spring of the release movement of the movable member can be followed.
  • the second side of the slider is designed such that a longitudinal slide movement by the force of the other spring at triggered thermal separation point and fixed component of the thermal shutdown device and unchanged position between slider and guide member and also a lifting movement based on the guide member with subsequent slide longitudinal movement with released detector wire the movable component of the thermal shutdown device can be done.
  • the second end of the spring or at least a part of the guide ring engages in a recess or a recess in the slide to lock it and the damage indicator in the proper state of the arrester.
  • the guide member has an inner cylindrical portion for receiving the compression spring and at least a portion of the Abtrennstempels or Abtrennzylinders.
  • the guide member may be an integral part of the housing, e.g. as plastic injection molded part is manufacturable.
  • the slider is arranged with its flat side transversely to the longitudinal axis of the cylindrical portion of the guide member at the top thereof, wherein the guide ring has an extension which engages in the recess corresponding thereto in the slide and the above-mentioned locking is used.
  • the compression spring is supported as a first abutment against the slide and as a second abutment against a Abtrennzunge the thermal separation point.
  • the second spring may preferably be formed as a leaf spring whose fixed end is held by a mold portion in the housing.
  • the housing may be part of a plug-in insert and be covered by a housing cap.
  • Ausgestaltend the second side of the slider on a fork shape, wherein the fork tines engage behind a reduced diameter portion of the movable member.
  • the movable component can be designed here as a hat-shaped bolt.
  • the damage indicator device can be designed to be pivotable and is guided on a bearing journal associated with the housing.
  • the damage indicator further comprises a surface portion provided with a signal color. By moving the damage indicator within a window portion of the housing cap, a color change can then be visually detected and a possible error condition of e.g. green to red.
  • the damage indicator device can have at one of its pivoting ends an extension or lever arm, which serves to trigger a telecommunications display.
  • the housing may have in one embodiment of the invention, a partition, wherein on one side of the partition, the at least one diverter and on the other, opposite partition wall side, the thermal separation point with guide part for the compression spring, the slide and the other spring are befindlich.
  • the thermal shutdown device can be designed as a cylindrical fuse with two opposite caps, wherein the fixed to the detector wire, the movable member is arranged on one of the caps.
  • the functional separation of the energy storage function for the thermal separation point and for the movable component of the shutdown on the one hand and the movement of the damage indicator on the other hand is possible.
  • a thermal shutdown in the form of a fuse 1.
  • This fuse 1 is connected via a Abtrennzunge 2 with a diverter, in particular a varistor 3, in connection.
  • a terminal 4 of the varistor 3 forms together with one end of the Abtrennzunge a solder fixed thermal separation point. 5
  • a detector wire (not shown) which communicates with a top end movable pin 6.
  • the bolt 6 can a movement in the representation according to the Fig. 1 to 3 to the top. In the proper condition of the fuse 1, the movement of the bolt 6 is blocked.
  • the aforementioned components are located in a housing 7, which in the illustrations according to the Fig. 1 to 3 only hinted at.
  • a slider 8 is present according to the invention.
  • the compression spring generates a force that acts between the slider 8 and the separation tongue 2.
  • the temperature at the separation point for example, exceeds 138 ° C, that is, the varistor 3 has an inadmissible heating, it comes to a melting process.
  • the guide member 9 moves down together with the separation tongue 2, ie, the separation point 5 is opened.
  • the upper end 9.1 the corresponding recess in the slide 8.
  • the display in the viewing window 13 changes to the color "red”.
  • the error state which thus results from the opened thermal separation point 5, is clearly signaled.
  • the display switches to "red", which can be seen in the viewing window 13.
  • the Fig. 4a and 4b show the proper condition of the surge arrester with functional fuse and closed thermal separation point 5.
  • the fuse 1 is formed as a cylindrical part with two opposite caps 14. At a lower end of one of the caps 14 is a plug contact 15 is located, which forms an outer terminal of the surge arrester, designed as a plug-in part.
  • Another plug connection 15 is in electrical connection with a mating contact of the varistor (not shown in the following figures).
  • the damage display device comprises a pivotable lever 16, which is held on a housing 7 associated bearing pin 17.
  • the housing 7 has a partition wall 18, which extends substantially horizontally in the example shown.
  • a guide 19 is integrally formed on the housing.
  • This guide 19 takes in its interior in the Fig. 1 to 3 symbolically illustrated spring 10 (compression spring) on.
  • a lower end of the compression spring 10th is received by a Abtrennzylinder 20, wherein an upper end of the compression spring inserted in a guide ring 21.
  • the guide ring 21 receives an extension 22 which engages in a corresponding recess 23 in the slider 8.
  • the extension 22 is part of the Abtrennzylinders 20th
  • the slider 8 is fork-shaped at its left-hand end in the figures, the tines 24 engage around a recess portion of the bolt 6.
  • the slider 8 can move in the longitudinal direction, so that a blocking function of the pivotable lever 16 is releasable.
  • the pivotable lever 16 is acted upon by a leaf spring 25 with a biasing force.
  • This leaf spring 25 corresponds to the further spring 12 according to the Fig. 1 to 3 ,
  • a lower end of the pivotable lever 16, provided with the reference numeral 26, can actuate via an opening portion 27 in the housing 7 a telecommunications contact (not shown).
  • the subassembly fuse 1 with plug contact 15 can be prefabricated outside the housing 7 in a separate device and then used to complete the surge arrester.
  • the Fig. 7 shows an exploded view of all essential parts of the surge arrester again.
  • the pivotable lever 16 has on its upper side a color-designed surface, which serves as a green indicator 31.
  • a coding pin 32 can be fixed in a known manner in the carrier insert 33 on the underside thereof to allow a reliable assignment of the male part to a base part, not shown.
  • the carrier insert 33 which is part of the housing 7, has the necessary formations for the individual elements for fixing them, in which case reference should additionally be made here to a shaped portion 34 for the fuse 1 and the guide 19 for receiving the spring with the separating cylinder 20 ,
  • the leaf spring 25 is held in a slot-shaped mold portion 35 in the carrier insert 33, which is advantageous for the purpose of simple assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuses (AREA)
EP09760893A 2009-01-12 2009-12-01 Überspannungsableiter mit einem optischen fehlerindikator Not-in-force EP2386108B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL09760893T PL2386108T3 (pl) 2009-01-12 2009-12-01 Ochronnik przepięciowy z optycznym wskaźnikiem błędu
SI200930401T SI2386108T1 (sl) 2009-01-12 2009-12-01 Prenapetostni odvodnik z optično signalizacijo okvar

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102009004345 2009-01-12
DE102009022069.0A DE102009022069B4 (de) 2009-01-12 2009-05-20 Überspannungsableiter
PCT/EP2009/066112 WO2010079015A1 (de) 2009-01-12 2009-12-01 Überspannungsableiter mit einem optischen fehlerindikator

Publications (2)

Publication Number Publication Date
EP2386108A1 EP2386108A1 (de) 2011-11-16
EP2386108B1 true EP2386108B1 (de) 2012-09-19

Family

ID=42263044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09760893A Not-in-force EP2386108B1 (de) 2009-01-12 2009-12-01 Überspannungsableiter mit einem optischen fehlerindikator

Country Status (7)

Country Link
US (1) US8705221B2 (pl)
EP (1) EP2386108B1 (pl)
CN (1) CN102272864B (pl)
DE (1) DE102009022069B4 (pl)
PL (1) PL2386108T3 (pl)
SI (1) SI2386108T1 (pl)
WO (1) WO2010079015A1 (pl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104078292A (zh) * 2014-06-12 2014-10-01 安徽三和电力技术有限公司 一种电源浪涌保护器的熔断装置

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DE102009053145A1 (de) 2009-11-05 2011-05-12 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
JP5504125B2 (ja) * 2010-10-08 2014-05-28 株式会社サンコーシヤ 保安器
DE102011052805B4 (de) 2011-08-18 2013-07-18 Phoenix Contact Gmbh & Co. Kg Sicherung
DE102012011072B4 (de) 2012-03-26 2016-03-03 Dehn + Söhne Gmbh + Co. Kg Defektanzeige für eine elektronische Einrichtung, insbesondere Überspannungsableiter
ITMI20130538A1 (it) 2013-04-08 2014-10-09 Con Trade S R L Scaricatore di sovratensioni, per la protezione di impianti elettrici da sovratensioni transitorie.
DE202013012174U1 (de) * 2013-10-22 2015-07-02 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzeinrichtung, umfassend mindestens einen Überspannungsableiter und eine, mit dem Überspannungsableiter in Reihe geschaltete, thermisch auslösbare Schalteinrichtung
DE202014002496U1 (de) * 2014-03-20 2014-04-17 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzeinrichtung, umfassend mindestens einen Überspannungsableiter und eine dem Überspannungsableiter parallel geschaltete, thermisch auslösbare, federvorgespannte Kurzschliessschalteinrichtung
US20170110279A1 (en) * 2014-04-07 2017-04-20 Littelfuse, Inc. Thermal metal oxide varistor circuit protection device
DE102014008366B3 (de) * 2014-06-04 2015-10-22 Dehn + Söhne Gmbh + Co. Kg Vorrichtung zum thermischen Auslösen oder Abtrennen eines Überspannungsschutzgerätes
DE102015008136B4 (de) 2014-09-05 2021-08-26 Dehn Se + Co Kg Schalteinrichtung für Überspannungsschutzgeräte
TWM514689U (zh) * 2015-08-28 2015-12-21 Suzhou Ceramate Technical Co Ltd 側彈式突波吸收模組
DE102015114953A1 (de) * 2015-09-07 2017-03-09 Obo Bettermann Gmbh & Co. Kg Überspannungsableiter
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
US10270657B2 (en) * 2015-09-14 2019-04-23 Ricoh Company, Ltd. Information processing apparatus, method for connecting information processing apparatus to cloud service, and recording medium
DE102016001767A1 (de) 2015-11-09 2017-05-11 DEHN + SÖHNE GmbH + Co. KG. Schalteinrichtung für Überspannungsschutzgeräte
EP3166193B1 (de) 2015-11-09 2018-01-31 Dehn + Söhne Gmbh + Co Kg Schalteinrichtung für überspannungsschutzgeräte
DE102017105436B3 (de) * 2017-03-14 2018-06-14 DEHN + SÖHNE GmbH + Co. KG. Thermisch auslösbare, mechanische Schalteinrichtung
DE102019110006B4 (de) * 2019-04-16 2024-07-04 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzgerät

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Publication number Priority date Publication date Assignee Title
CN104078292A (zh) * 2014-06-12 2014-10-01 安徽三和电力技术有限公司 一种电源浪涌保护器的熔断装置

Also Published As

Publication number Publication date
CN102272864A (zh) 2011-12-07
CN102272864B (zh) 2014-03-19
DE102009022069B4 (de) 2016-10-20
US8705221B2 (en) 2014-04-22
EP2386108A1 (de) 2011-11-16
WO2010079015A1 (de) 2010-07-15
PL2386108T3 (pl) 2013-02-28
US20120014028A1 (en) 2012-01-19
DE102009022069A1 (de) 2010-07-22
SI2386108T1 (sl) 2013-01-31

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