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WO2019007686A1 - Dispositif de protection contre les surtensions encapsulé sous une configuration coaxiale pourvu d'un boîtier de type pot - Google Patents

Dispositif de protection contre les surtensions encapsulé sous une configuration coaxiale pourvu d'un boîtier de type pot Download PDF

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Publication number
WO2019007686A1
WO2019007686A1 PCT/EP2018/066418 EP2018066418W WO2019007686A1 WO 2019007686 A1 WO2019007686 A1 WO 2019007686A1 EP 2018066418 W EP2018066418 W EP 2018066418W WO 2019007686 A1 WO2019007686 A1 WO 2019007686A1
Authority
WO
WIPO (PCT)
Prior art keywords
surge arrester
electrode
housing
cup
protection device
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.)
Ceased
Application number
PCT/EP2018/066418
Other languages
German (de)
English (en)
Inventor
Edmund ZÄUNER
Florian GÄCK
Christian Lang
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 CN201880045372.2A priority Critical patent/CN110914930B/zh
Priority to EP18732773.9A priority patent/EP3459090B1/fr
Priority to DK18732773.9T priority patent/DK3459090T3/da
Publication of WO2019007686A1 publication Critical patent/WO2019007686A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
    • 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
    • H01C7/102—Varistor boundary, e.g. surface layers
    • 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
    • H01H37/767—Normally open

Definitions

  • the invention relates to an encapsulated overvoltage protection device in coaxial design with a cup-like housing, a first and a second electrode, a disc-shaped surge arrester, in particular designed as a varistor, which is electrically connected to the electrodes and is located in the cup-like housing, as well as with a fusible
  • An element for producing a short circuit between the electrodes in the event of overloading of the surge arrester wherein at least parts of the cup-like housing form one of the electrodes, receive or support such an electrode and the second of the electrodes stamp-like contacts the disc-shaped surge arrester according to the preamble of claim 1.
  • a conductive, melting at a predetermined temperature material for example a solder.
  • An annular gap located circumferentially around the disk-shaped varistor receives an insulating membrane.
  • Both the solder and the insulating membrane are able to generate a short circuit in order to achieve a fail-safe state in the event of overloading of the varistor used.
  • the melting temperature of the solder is lower than the temperature at which the dielectric insulating material used in the gap is destroyed.
  • the second of the electrodes has a circumferential recess which is filled with an electrically conductive fusible material.
  • Varistor specify which under all circumstances in case of overload of the
  • Overvoltage protection device has already come to an overload case and possibly a replacement of the device erforderl I is.
  • an overvoltage protection device preferably realized in coaxial design.
  • the overvoltage protection device is based on a cup-like housing.
  • the housing in particular the housing bottom, form one of the necessary electrodes.
  • connection and fastening means for example in the form of a threaded bolt, be present.
  • the varistor preferably used as a surge arrester has a disc shape, which is adapted on the dimension side to the cavity defined by the cup-like housing.
  • the disc-shaped varistor which is preferably used parallel to the bottom of the cup-like housing, is contacted by a second electrode, preferably under mechanical pretension.
  • This second electrode may have a stamp-like configuration and lead to a corresponding external connection.
  • This external connection can also be realized as a bolt or as a blind hole or the like.
  • the cup-like housing is in a conventional manner via a
  • Triggering a short circuit between the two electrodes used and in contrast to the prior art not directly via a fusible element which bridges the electrodes, but indirectly by releasing a conductive, spring-biased contact pin.
  • the second electrode has at least one radial recess or a blind hole on its section facing the surge arrester.
  • spring-biased contact pin In the Ausappel ung or the blind hole of the mentioned conductive, spring-biased contact pin is used, blocked the path of movement of a fusible element and overloading the
  • cup-like housing manufactures lt.
  • the fusible element blocks the
  • the short-circuit current is conducted directly from the second electrode via the contact pin to the first electrode.
  • the contact pin which has to carry the short-circuit current, is interpreted accordingly, without having to take into account the properties and the material composition of the fusible element consideration, since the latter no current carrying capacity is to be requested.
  • the fusible element is preferably formed as a pin-like blocking part, which is in one or more transverse to the recess or the blind hole running hole.
  • the pen-like blocking part With one of its ends, the pen-like blocking part is in tight,
  • the corresponding holes are guided to the surface of the disk-shaped surge arrester, so that the blocking part passes into thermal contact without the intervening disturbing heat sinks.
  • the second electrode has an extension, which has an axially extending cavity.
  • This cavity is able to receive a spring-biased Signali- s istsstab whose lower, the contact pin facing end of this contact pin blocks in his blockage and in the
  • a signaling of the state of the overvoltage protection device can be accomplished, as well as the operation of a telecommunication device or a Kennmelders done.
  • the signaling rod can move axially in the cavity u nd contact, for example, with its upper end of the aforementioned telecommunications device.
  • sections of the signaling rod can be provided with different color coding, wherein a color change with
  • Shift of the signaling rod in the field of a viewing window is recognizable.
  • the signaling rod consists of an electrically insulating material, so that insofar the electrical safety is ensured during operation of the device.
  • the cup-like housing located, at least one disc-shaped surge arrester
  • a cap-shaped insulating part held circumferentially by a cap-shaped insulating part and centered, wherein in the insulating part at the periphery openings for the unimpeded passage of the at least one contact pin are present.
  • Stamp-like electrode in their pointing to the surge arrester section a plurality of radial recesses, which in or to
  • each of the recesses receiving a spring-biased, conductive contact pin whose respective path of movement of a
  • the invention accordingly comprises an encapsulated, coaxial overvoltage protection based on varistor, in particular MOV base, which in the event of overloading or overheating
  • thermal short-circuiter activated which forms defined, high current carrying short-circuit paths within the enclosure. Due to the chosen construction of the separating device within the coaxial structure, a simple mechanical condition indication can be realized which can be integrated in the center of the known connecting elements or terminal studs. If required, the status display in the respective connection bolt can be combined with a remote signaling device.
  • Fig. La is a longitudinal section and a cross-sectional view of a
  • Fig. Lb is a longitudinal section and a cross section of an overvoltage protection device according to Fig. La, but in the tripped, that is short-circuited state; two different longitudinal sections for illustrating the spring-biased signal ubensstabes as flag in the untriggered, that is, the engagement state and a related cross section with respect to the interaction between a detent end of the spring-biased signaling rod on the one hand and a related
  • Fig. 3a shows a longitudinal section and a cross section through an embodiment of the overvoltage protection device with a plurality of radial recesses in the lower region of the second, stem-shaped electrode in the untriggered, that is
  • Fig. 3b shows a longitudinal section and a cross-section analogous to Fig. 3a, but in the triggered, that is short-circuited state;
  • Fig. 4 is an exploded view of the components of the invention
  • Overvoltage protection device analogous to the illustrations according to FIGS. 2a and 2b with a simple conductive contact pin and a spring-biased signaling rod.
  • Overvoltage protection device is based on a coaxial design with a cup-like housing 1.
  • the cup-like housing has a side wall 2 and a bottom 3.
  • a connecting bolt 4 is present as an electrical and mechanical fastening element.
  • a disk-shaped surge arrester 5 Inside the cup-like housing 1 there is a disk-shaped surge arrester 5, in particular designed as a disc-shaped varistor.
  • One of the two surface sides of the surge arrester 5 is in contact with the inside of the bottom 3 of the cup-like housing.
  • the cup-like housing 1 forms a first electrode.
  • ei n nsprerkraftvorgespa nnter contact pin 9 is inserted from conductive material.
  • the movement path of the contact pin 9 is ren of ei n merschmelzba
  • the second electrode 6 has, in the embodiment according to the figures La and 1b and 3a and 3b ei ne threaded bore 11, which an electrical connector as rstel lt.
  • the disk-shaped overspray submergable 5 located on the cup-like housing 1 is centered on the muzzle side by a cap-shaped insulating part 12, the insulating part 12 having openings 13 for the passage of the at least one contact pin 9 a.
  • the open side of the cup-like housing 1 is of ei ner cap 14 Corp. r, with additional sealing elements 15 can be used.
  • the necessary contact pressure relative to the disk-shaped surge arrester 5 is realized by means of a spring 16 which is capable of compensating thermally induced expansions of the overall arrangement or of the components occurring in the interior of the cup-like housing.
  • the contact pin 9 can move to the inner wall of the cup-shaped housing 1 » around the
  • Displaced parts of the fusible element can be seen from the gap-like spaces as shown in the figures, taken up and hinder insofar the path of movement of the devisbo lzens 9 not.
  • the second electrode 6 has an extension, which has an axially extending cavity 17, wherein in the cavity 17, a spring-biased signaling rod 18 is inserted in a movable manner.
  • FIG. 2a shows here the Radioactive portion of the signaling rod 18, which faces the contact pin 9 and
  • FIG. 2b shows the short circuit case with released signaling rod 18.
  • the upper end 19 of the signaling rod 18 can so far a
  • the state of the signaling rod 18 can be visualized by a viewing window 22.
  • the signaling rod 18 is guided in the embodiments according to Figures 2a and 2b of a hollow cylindrical extension 23, which is on the one hand connected to the cavity 17 of the second electrode and on the other hand, the identifier 20 fixed.
  • the second electrode has a plurality of lateral recesses or blind holes 8 in its section 7 facing the surge arrester 5, which are oriented to the center M or the center of the electrode portion 7 or meet there, each of the recesses or blind holes 8 receives a spring-biased conductive contact pin 9 whose respective path of movement of a respective fusible element or blocking member 10 locked in Radiofali and overloading the
  • FIG.4 shows the cup-like housing 1 with connecting bolt 4, the disk-shaped varistor 5, an exemplary pin-like blocking part 10, the contact pin 9 with circumferential recess 90 to release the signaling rod 18, a spring 91 for generating the bias for the purpose of movement of the contact pin 9, the
  • Biasing spring 16 a spring 180 for biasing the signaling rod 18, the insulating part 12, which in its interior inter alia the
  • stamp-like second electrode 6 and the surge arrester 5 receives and self-centered parts. Furthermore, sealing elements 15 and the
  • the hollow cylinder 23 engages with its lower end pointing in the direction of surge arrester 5 into a cylindrical recess of the second electrode 6, as described in detail with reference to FIGS. 2a and 2b
  • the upper, free end of the signaling rod 18 has a
  • Color coding 182 which is visible in response of the short-circuit mechanism out of the hollow cylinder 23 or can be seen in combination with the core detector unit 20 through the viewing window 22.
  • the upper end 182 of the signaling rod 18 can with a
  • Microswitch 21 interact and trigger the microswitch 21 on a contact plunger or block.
  • the elements of the indicator are realized by the parts 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuses (AREA)

Abstract

L'invention concerne un dispositif de protection contre les surtensions encapsulé sous une configuration coaxiale pourvu d'un boîtier de type pot, d'une première et d'une deuxième électrode, d'un dériveur de surtension en forme de disque réalisé en particulier sous la forme d'un varistor, qui est relié électriquement aux électrodes et se trouve dans le boîtier de type pot, ainsi que d'un élément fusible servant à établir un court-circuit entre les électrodes dans le cas d'une surtension du dériveur de surtension. Au moins des parties du boîtier de type pot forment une des électrodes, logent ou supportent une électrode de ce type et la deuxième des électrodes établit un contact à la manière d'une matrice avec le dériveur de surtension en forme de disque. Selon l'invention, la deuxième électrode comporte, sur son tronçon pointant vers le dériveur de surtension, au moins un évidement radial ou un trou borgne. Un boulon de contact conducteur précontraint par une force de ressort est inséré dans l'évidement ou le trou borgne. Son trajet de déplacement est bloqué par l'élément fusible et est débloqué en cas de surcharge du dériveur de surtension. Le boulon de contact établit ainsi un court-circuit stable entre la deuxième électrode et le boîtier de type pot.
PCT/EP2018/066418 2017-07-07 2018-06-20 Dispositif de protection contre les surtensions encapsulé sous une configuration coaxiale pourvu d'un boîtier de type pot Ceased WO2019007686A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201880045372.2A CN110914930B (zh) 2017-07-07 2018-06-20 具有杯状的壳体的同轴结构形式的封装的过压保护装置
EP18732773.9A EP3459090B1 (fr) 2017-07-07 2018-06-20 Dispositif de protection contre les surtensions encapsulé sous une configuration coaxiale pourvu d'un boîtier de type pot
DK18732773.9T DK3459090T3 (da) 2017-07-07 2018-06-20 Indkapslet overspændingsbeskyttelsesanordning i koaksial konstruktionsform med et bægerlignende kabinet

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102017115266 2017-07-07
DE102017115266.0 2017-07-07
DE102017118181.4A DE102017118181B4 (de) 2017-07-07 2017-08-10 Gekapselte Überspannungsschutzvorrichtung mit einem becherartigen Gehäuse
DE102017118181.4 2017-08-10

Publications (1)

Publication Number Publication Date
WO2019007686A1 true WO2019007686A1 (fr) 2019-01-10

Family

ID=64666340

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/066418 Ceased WO2019007686A1 (fr) 2017-07-07 2018-06-20 Dispositif de protection contre les surtensions encapsulé sous une configuration coaxiale pourvu d'un boîtier de type pot

Country Status (5)

Country Link
EP (1) EP3459090B1 (fr)
CN (1) CN110914930B (fr)
DE (1) DE102017118181B4 (fr)
DK (1) DK3459090T3 (fr)
WO (1) WO2019007686A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120855096A (zh) * 2025-09-22 2025-10-28 四川清能继控科技有限公司 一种电力通用保护测控装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021110439B4 (de) * 2021-03-25 2023-10-12 Electronicon Kondensatoren Gmbh Elektrischer Kondensator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020196593A1 (en) * 2001-06-21 2002-12-26 Kizis John Anthony Device and method for mounting an overvoltage protection module on a mounting rail
EP1798742B1 (fr) 2005-12-15 2013-01-02 Raycap Corporation Module de protection contre la surtension comprenant un substrat de matériau varistor et un élément fondable de sorte à court-circuiter électriquement la matériau varistor en cas de surcharge thermique
WO2013000498A1 (fr) * 2011-06-27 2013-01-03 Abb Technology Ag Dispositif de protection contre les surtensions et disjoncteurs à haute tension
EP2677524A1 (fr) 2012-06-19 2013-12-25 Raycap Corporation Dispositifs de protection contre les surtensions comprenant une varistance et un élément fusible conducteur électrique
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10000617A1 (de) * 2000-01-10 2001-07-12 Abb Hochspannungstechnik Ag Ueberspannungsableiter
EP1523792B1 (fr) * 2002-07-19 2011-05-11 Epcos Ag Element de protection pour deriver des surtensions et utilisation correspondante
EP1691379B1 (fr) * 2005-02-15 2009-12-30 Spinner GmbH Dérivateur de surtension coaxial
US8743525B2 (en) * 2012-06-19 2014-06-03 Raycap Intellectual Property, Ltd Overvoltage protection devices including wafer of varistor material
SI24213A (sl) * 2012-10-24 2014-04-30 Razvojni Center Enem Novi Materiali D.O.O. Prenapetostni zaĺ äśitni modul

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020196593A1 (en) * 2001-06-21 2002-12-26 Kizis John Anthony Device and method for mounting an overvoltage protection module on a mounting rail
EP1798742B1 (fr) 2005-12-15 2013-01-02 Raycap Corporation Module de protection contre la surtension comprenant un substrat de matériau varistor et un élément fondable de sorte à court-circuiter électriquement la matériau varistor en cas de surcharge thermique
WO2013000498A1 (fr) * 2011-06-27 2013-01-03 Abb Technology Ag Dispositif de protection contre les surtensions et disjoncteurs à haute tension
EP2677524A1 (fr) 2012-06-19 2013-12-25 Raycap Corporation Dispositifs de protection contre les surtensions comprenant une varistance et un élément fusible conducteur électrique
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120855096A (zh) * 2025-09-22 2025-10-28 四川清能继控科技有限公司 一种电力通用保护测控装置

Also Published As

Publication number Publication date
EP3459090A1 (fr) 2019-03-27
CN110914930B (zh) 2022-03-04
CN110914930A (zh) 2020-03-24
EP3459090B1 (fr) 2020-06-03
DE102017118181A1 (de) 2019-01-10
DE102017118181B4 (de) 2019-01-17
DK3459090T3 (da) 2020-08-31

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