EP3243209B1 - Überspannungsschutzgerät mit im thermischen überlastfall aktivierter mechanischer abtrennvorrichtung - Google Patents

Überspannungsschutzgerät mit im thermischen überlastfall aktivierter mechanischer abtrennvorrichtung Download PDF

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Publication number
EP3243209B1
EP3243209B1 EP15801148.6A EP15801148A EP3243209B1 EP 3243209 B1 EP3243209 B1 EP 3243209B1 EP 15801148 A EP15801148 A EP 15801148A EP 3243209 B1 EP3243209 B1 EP 3243209B1
Authority
EP
European Patent Office
Prior art keywords
overvoltage protection
slide
protection device
support body
arm
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
EP15801148.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3243209A1 (de
Inventor
Li HONGJUN
Xu NIANSHENG
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 SI201531282T priority Critical patent/SI3243209T1/sl
Priority to PL15801148T priority patent/PL3243209T3/pl
Publication of EP3243209A1 publication Critical patent/EP3243209A1/de
Application granted granted Critical
Publication of EP3243209B1 publication Critical patent/EP3243209B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • 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
    • H01T1/12—Means structurally associated with spark gap for recording operation thereof

Definitions

  • the invention relates to an overvoltage protection device with a mechanical disconnection device activated in the event of a thermal overload, said device comprising connection elements which can be moved by means of a spring-loaded or preloaded slide from a closed position into a current-interrupting or potential-separating position, the closed position of the connection elements being secured by a solder or thermally releasable adhesive , furthermore, the connection elements consist of a pair of metallic brackets, the ends of which run essentially parallel and receive the respective contact tab of the surge protection unit, the ends of the brackets facing away from the surge protection unit, including a free space, can be connected to one another and have a section for external connecting parts, in the free space the slide is inserted with a preload spring, the spring preload being oriented in the direction of the contact lug of the overvoltage protection unit, and the slide continues to have a ke Ilform and / or portions of the metallic bracket have an inclined surface to produce a force component on the parallel ends of the bracket when the slide movement, so that they can
  • DE 10 2007 042 991 A1 From the DE 10 2007 042 991 A1 is a generic surge protection device with mechanical activated in the event of thermal overload Disconnect device known. There, in particular, the solder connection point of the connection elements, which is opened in the event of a disconnection, should not be continuously subjected to the action of a mechanical force.
  • Another task after DE 10 2007 042 991 A1 consisted of designing the connection elements of the separating device in such a way that there is sufficient surge current carrying capacity, the contact pressure for the discharge process being produced by the surge current itself.
  • the known disconnection device is designed such that the current supply to the voltage-limiting overvoltage protection units, in particular varistors, is formed by two conductor sections through which surge current flows in the same direction, which run essentially parallel in the end region and in a common connection point, which is secured by a solder is to pass over.
  • the voltage-limiting overvoltage protection units in particular varistors
  • solder point Due to the parallel current flow and the associated force effects in the event of a surge current, the sections of the conductors or brackets attract each other and at this point bring about the desired increase in the contact force at the solder connection point. It is thus possible to design the solder joint only for fixing the respective sections of the bracket. The same makes it possible to limit the mechanical dimensioning of the solder point to an absolute minimum and thus to make it particularly thermally sensitive. The solder point therefore has only a very small heat capacity.
  • the connecting elements of the prior art which consist of a pair of current-dividing metallic brackets, can be made of a less mechanically strong material. Due to the division into the parallel current paths, the dimensioning of the conductor sections can be done more cost-effectively, since the current density is halved.
  • a spring of the known separating device has the task of relocating the aforementioned slide between the current paths in the event of melting of the solder joint and thus interrupting the circuit.
  • the spring force can be reduced so that the desired low permanent load on the solder joint results.
  • the separation process can be supported by a wedge-shaped design of the slide.
  • the known slide has an essentially flat surface section for optically signaling the respective slide position, specifically with reference to a corresponding window which is located in the outer housing. Below this surface section of the movable slide, a further surface that can be released by the slide is provided for optical signaling of the disconnected state.
  • the surface section of the slide and this further surface are designed in different colors.
  • the foot of the slider has after DE 10 2007 042 991 A1 a guide groove to prevent tilting during the movement to be carried out to separate the metal brackets.
  • the DE 10 2013 006 052 A1 who have a continuing education after teaching DE 10 2007 042 991 A1 represents also relates to a surge protection device with at least one surge protection unit and at least one contact tab and a mechanical disconnection device activated in the event of thermal overload.
  • the separating device comprises a connecting element which can be moved from a closed to a current-interrupting position by means of a slide which is prestressed by spring force.
  • the connection element consists of a pair of current-dividing metallic brackets, the ends of which are directed parallel to the contact lug of the overvoltage protection unit and which receive the respective contact lug of the overvoltage protection unit in their center.
  • the disconnecting device comprises connection elements which can be moved from a closed position into a current-interrupting or potential-separating position by means of a spring-loaded or prestressed slide. In the closed position, the connection elements are secured by a solder or a thermally releasable adhesive.
  • connection elements preferably consist of a pair of metallic brackets, the ends of which run parallel and, preferably in the middle, receive the respective contact tab of the overvoltage protection unit, in particular a varistor.
  • the ends of the brackets facing away from the overvoltage protection unit can be connected to one another, including a free space, and have a section for external connecting parts,
  • the actual slide with a preload spring is located in the free space, the spring preload being oriented in the direction of the contact lug of the overvoltage protection unit.
  • the slide preferably has a wedge shape and / or portions of the bracket have an inclined surface in order to generate a force component on the parallel ends of the bracket when the slide moves, so that these can be moved away from the contact tab, in the region of the parallel ends the bracket and the contact lug the already mentioned solder or adhesive connection is formed.
  • the slide has a section for optical signaling of the respective slide position and below this section of the movable slide there is a further surface that can be released by the slide for optical signaling of the disconnected state.
  • the slider can also have the shape of an M or be approximated to the shape of an M.
  • a special support body is provided, with the aid of which all essential elements of the overvoltage protection device can be mechanically connected and assembled.
  • the material required for the support body must meet the special electrical and mechanical properties, whereby, however, a housing encapsulation can consist of a cheaper material.
  • the support body has openings for the outer connection parts on its base side, the part of the support body opposite on the base side having an opening for introducing the overvoltage protection unit.
  • the outer connection parts can be designed as plug contacts, for example in a U or V shape, which is used for the safe electrical contacting of the Plug-in trained surge protection device based on a base part.
  • a chamber which holds the pair of metal brackets, the slider and the biasing spring, i.e. receives the means for the thermal disconnection device, the respective contact tab of the overvoltage protection unit protruding into the chamber.
  • the slider according to the invention has a first arm, directed to the bottom side, and a second arm, directed to the opening and thus to the top of the support body.
  • the second arm merges into the section for optical signaling and the first arm into a section for triggering a remote fault reporting device.
  • the slide not only takes on the function of interrupting the power supply in the event of a fault, but also displays the status of the respective surge protection device along with remote signaling of this status.
  • the further surface that can be released by the slide for optical signaling of the disconnected state e.g. can be kept in red coloring, is designed according to the invention as an extension of a side wall portion partially covering the opening of the support body.
  • extension with the side wall section is designed to be elastically movable and in particular the extension and side wall section are connected to the supporting body via a film hinge.
  • a corresponding varistor block or a combination of several varistors can be inserted into the support body by opening the support body at the top and pushing the extension with side wall section away from the side.
  • the extension with the side wall section moves back and covers the opening on the Top of the support body from the size of the extension.
  • the second arm runs in a flat recess or a corresponding shape in the support body.
  • Means for guiding are formed between the recess and the second arm. These means can be implemented in the manner of a tongue and groove guide.
  • the overvoltage protection unit consists of an electrically and mechanically parallel arrangement of several varistors.
  • the first arm dips with its free end into a recess in the base plate of the support body and blocks a pin of a telecommunications signaling device.
  • This pin is located in a base part or base which is known per se and is used to hold one or more surge protective devices which are designed as a plug-in part.
  • the carrier body can be enclosed by a housing capsule, leaving the bottom side free, the upper side of the housing capsule having a window for recognizing the state of the separating device.
  • the aforementioned chamber is thermally decoupled from the rest of the supporting body and the surge protection device by walls.
  • the only direct thermal connection is via the contact lug of the relevant at least one overvoltage protection unit, which protrudes into the chamber, in particular in the form of one or more varistors.
  • a cavity for receiving one end of the spring is formed in the movable slide for receiving the biasing spring.
  • connection elements which run essentially parallel, are, as already mentioned, fixed in position by solder or adhesive and strive apart during the separation process due to their mechanical residual stress.
  • the bow-shaped connection elements are symmetrical.
  • the slide like the supporting body, is made of an electrically insulating material.
  • the surge protection device 2 designed as a plug-in part after Fig. 1 consists of the main assemblies supporting body 16, complete slide 4 with section 7 for optical signaling of the respective state of the disconnecting device, the two outer connecting parts 13 and 14 designed as plug contacts, the connecting part 14 comprising the metallic bracket of the mechanical separating device, further with a biasing spring 27, which is partially received by one end 20 of the slide 4, the overvoltage protection unit 11 with the contacts 18 and 19 and the contact 17 pointing to the bottom of the supporting body 16.
  • the overvoltage protection unit 11 comprises two mechanically and electrically connected varistors 21.
  • a side wall of the support body 16 or a corresponding side wall section 26 is provided with an angled extension 12 which covers the opening of the support body 16 over an area.
  • This side wall section 26 with extension 12 is designed to be elastically movable via a film joint, not shown, so that, as symbolized by the arrow, the overvoltage protection unit 11 can be pushed into the supporting body 16.
  • FIG. 2 The correspondingly completed, in Fig. 2
  • the quasi-functional arrangement shown is then enclosed by a housing encapsulation 10 which has a viewing window 8 in relation to the recognizability of the state of the device arrangement.
  • the outer connecting parts 13 and 14 preferably have a U-shape in their plug-in section 22.
  • the bottom side 160 of the support body 16 has openings for the outer connecting parts 13; 14, wherein the support body 16 has an opening 170 opposite the bottom side 160.
  • the section of the slide which comes into contact with the region of the metallic stirrups can have wedge-shaped surfaces and have a shape in the form of an M.
  • a chamber 180 which adjoins the pair of metal brackets (14 Fig. 2 ), the actual slide, in particular the section 20 and the biasing spring 27, the respective contact tab 17 of the overvoltage protection unit 11 protruding into the chamber 180.
  • the slider 4 comprises a first arm 200, directed to the bottom 160, and a second arm 400, directed to the opening 170 and thus to the top of the support body 16.
  • the second arm 400 merges into the section 7 for optical signaling and the first arm 200 into a section 5 for triggering a remote fault reporting device.
  • the further surface 12 released by the slide 4 is that of the extension of the side wall section 26.
  • the second arm 400 runs in a flat recess 401 of the supporting body 16, with means 402 for guiding between the recess 401 and the second arm 400.
  • This means 402 can be a projection which, in conjunction with the groove 403 in the slide 4, realizes the desired guidance.
  • the first arm 200 engages with its free end 5 in a recess in the bottom side 160 of the support body 16, as in FIG Fig. 2 is recognizable.
  • the support body 16 which is preferably manufactured as a plastic injection-molded part, accommodates the overvoltage protection unit 11 in its interior, which can be pushed in virtually over the opening side 170 after the parts 26 and 12 have been pivoted away. After inserting and fixing the contacts 13 and 14 and soldering them to the connections 17, 18 and 19 of the overvoltage protection unit 11 and the slide positioned in advance in relation to the space between the metal brackets of the contact 14, the primary assembly process is complete. Subsequently, only the housing encapsulation 10 has to be put over, with corresponding means for locking being provided in a manner known per se.
  • the Fig. 5 makes the current flow through the surge protection device clearly by the dashed line 29, the plug contacts one in the Fig. 5 Represent left-hand contact 22 with a longer leg 13 and a right-hand contact 28 with a shorter leg, the shorter legs merging into the metallic bracket 14 or being connected to such a metallic bracket.
  • the necessary solder connection that separates or melts under thermal stress is then realized in the region 23.
  • the thermal separation device 9 (see Fig. 6b ) can be found in the representation Fig. 5 in the immediate vicinity of contacts 22 and 28 with the result of reduced electromotive forces in the event of surge current.
  • Reference number 30 symbolizes the clear distance between contacts 22 and 28.
  • the thermal separating device 9 comprises, as essential functional components, the metallic brackets 25, which are preferably components of the contact 14. In the event of disconnection or in the original state, the brackets 25 strive apart, as in FIG Fig. 6b is shown.
  • the bias spring 27 is guided in a recess of the M slide.
  • the brackets 25 are closed and soldered to the contact lug 24.
  • the slide 20 is in the state according to Fig. 6a .
  • the slider 20 With its central notch, the slider 20 comes into abutment with the contact lug 24, the wedge sides of the slider 20 sliding into the space between the respective front end of the bracket 25 and the contact lug 24, so that the desired separation distance can be achieved.
  • section 5 of arm 400 blocks a pin 6 for remote error reporting.
  • the pin 6 is released and a signal for remote electrical signaling is generated via a contact arrangement (not shown).

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuses (AREA)
EP15801148.6A 2015-01-09 2015-11-25 Überspannungsschutzgerät mit im thermischen überlastfall aktivierter mechanischer abtrennvorrichtung Active EP3243209B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201531282T SI3243209T1 (sl) 2015-01-09 2015-11-25 Prenapetostna zaščitna naprava z mehanskim odklopnikom, ki se aktivira v primeru topolotne preobremenitve
PL15801148T PL3243209T3 (pl) 2015-01-09 2015-11-25 Urządzenie ochrony przeciwprzepięciowej z aktywowanym w przypadku przeciążenia termicznego, mechanicznym urządzeniem rozłączającym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015000329.1A DE102015000329B3 (de) 2015-01-09 2015-01-09 Überspannungsschutzgerät mit im thermischen Überlastfall aktivierter mechanischer Abtrennvorrichtung
PCT/EP2015/077614 WO2016110359A1 (de) 2015-01-09 2015-11-25 Überspannungsschutzgerät mit im thermischen überlastfall aktivierter mechanischer abtrennvorrichtung

Publications (2)

Publication Number Publication Date
EP3243209A1 EP3243209A1 (de) 2017-11-15
EP3243209B1 true EP3243209B1 (de) 2020-07-08

Family

ID=54705171

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15801148.6A Active EP3243209B1 (de) 2015-01-09 2015-11-25 Überspannungsschutzgerät mit im thermischen überlastfall aktivierter mechanischer abtrennvorrichtung

Country Status (7)

Country Link
EP (1) EP3243209B1 (pl)
CN (1) CN107112101B (pl)
DE (1) DE102015000329B3 (pl)
ES (1) ES2821248T3 (pl)
PL (1) PL3243209T3 (pl)
SI (1) SI3243209T1 (pl)
WO (1) WO2016110359A1 (pl)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015000331A1 (de) * 2015-01-09 2016-07-14 DEHN + SÖHNE GmbH + Co. KG. Kontaktanordnung für steckbare Überspannungsableiter
DE102016015593B4 (de) 2016-06-10 2021-07-08 Dehn Se + Co Kg Überspannungsschutzanordnung mit mehreren, auf einer ersten Seite einer n-eckigen Trägerplatte angeordeten, scheibenförmigen Varistoren
DE102017112429B4 (de) * 2017-06-06 2019-07-18 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
DE102017218582B4 (de) * 2017-10-18 2019-12-24 Phoenix Contact Gmbh & Co. Kg Bauraumbegrenztes Schutzmodul mit zumindest zwei Überspannungsschutzelementen in parallelen Stromzweigen
DE102018125520A1 (de) * 2018-10-15 2020-04-16 Dehn Se + Co Kg Überspannungsschutzgerät mit mehreren Überspannungsableitern und diesen jeweils zugeordneter, insbesondere thermischer, Abtrennvorrichtung
DE102019114424A1 (de) * 2019-05-29 2020-12-03 Phoenix Contact Gmbh & Co. Kg Überlastschutzanordnung
FR3107781B1 (fr) * 2020-02-27 2023-06-30 Legrand France Appareil électrique contre les surtensions transitoires et un dispositif de varistances à détection d’emballement thermique
FR3107780B1 (fr) * 2020-02-27 2022-03-11 Legrand France Appareil électrique contre les surtensions transitoires et un dispositif de varistances à détection d’emballement thermique
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
CN214588697U (zh) * 2021-04-16 2021-11-02 厦门赛尔特电子有限公司 一种具有双脱扣机构的电涌保护器

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AT406207B (de) * 1997-09-30 2000-03-27 Felten & Guilleaume Ag Oester Steckbarer überspannungsableiter
FR2783365B1 (fr) * 1998-09-15 2000-12-01 Soule Materiel Electr Dispositif de protection d'installations electriques contre les perturbations de l'alimentation
DE102007042991B4 (de) * 2007-06-11 2009-09-17 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzgerät mit im thermischen Überlastfall aktivierter mechanischer Abtrennvorrichtung
CN101741081A (zh) * 2010-01-12 2010-06-16 佛山市浦斯电子有限公司 具有热保护功能的电涌抑制器
DE102011018556A1 (de) * 2011-02-18 2012-08-23 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzeinrichtung, umfassend mindestens einen Überspannungsableiter
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.
DE102013006052B4 (de) * 2013-02-08 2016-08-04 DEHN + SÖHNE GmbH + Co. KG. Überspannungsschutzgerät
ITMI20130915A1 (it) * 2013-06-04 2014-12-05 Con Trade S R L Scaricatore di sovratensioni dotato di un dispositivo di segnalazione del suo stato di degrado.

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Also Published As

Publication number Publication date
ES2821248T3 (es) 2021-04-23
WO2016110359A1 (de) 2016-07-14
SI3243209T1 (sl) 2020-08-31
PL3243209T3 (pl) 2020-12-14
CN107112101B (zh) 2019-02-19
CN107112101A (zh) 2017-08-29
EP3243209A1 (de) 2017-11-15
DE102015000329B3 (de) 2016-05-19

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