EP3673497A1 - Dispositif de sectionnement pour parafoudre - Google Patents

Dispositif de sectionnement pour parafoudre

Info

Publication number
EP3673497A1
EP3673497A1 EP19725355.2A EP19725355A EP3673497A1 EP 3673497 A1 EP3673497 A1 EP 3673497A1 EP 19725355 A EP19725355 A EP 19725355A EP 3673497 A1 EP3673497 A1 EP 3673497A1
Authority
EP
European Patent Office
Prior art keywords
separating
thermal separation
block
support body
strip
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
EP19725355.2A
Other languages
German (de)
English (en)
Other versions
EP3673497B1 (fr
Inventor
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 SI201930096T priority Critical patent/SI3673497T1/sl
Priority to PL19725355T priority patent/PL3673497T3/pl
Publication of EP3673497A1 publication Critical patent/EP3673497A1/fr
Application granted granted Critical
Publication of EP3673497B1 publication Critical patent/EP3673497B1/fr
Active 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
    • 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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • 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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H2009/0292—Transparent window or opening, e.g. for allowing visual inspection of contact position or contact condition
    • 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
    • H01H2037/762—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 using a spring for opening the circuit when the fusible element melts
    • 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
    • H01H2037/762—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 using a spring for opening the circuit when the fusible element melts
    • H01H2037/763—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 using a spring for opening the circuit when the fusible element melts the spring being a blade spring
    • 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

Definitions

  • the invention relates to a disconnection device for a surge arrester, which is received by a support body and is different from the
  • Support body plug contacts extend, which with at least one
  • Discharge element of the surge arrester are connected, further with a switching tongue, which has a thermal at a first end
  • an isolating separating block pivotably mounted on the supporting body and under spring preload, the spring preload acting on the thermal separation point via the switching tongue according to the preamble of claim 1.
  • a disconnection device for a surge arrester is previously known from EP 2 011 128 B1.
  • the switching movement is carried out by a switching tongue, which has a permanently acting
  • Holding force is aligned.
  • the permanent biasing force acting indirectly on the switching tongue or its soldering point to generate a desoldering or switching force via a disconnecting block is replaced by at least one additional biasing force acting independently thereof and a supplementary one
  • the distribution of forces is such that, in the idle state, a small resulting force acts on the solder point and as large as possible
  • Resulting force executes the switching movement during the desoldering process by providing the pretensioning force in the desoldering phase through the formation of the switching tongue from a memory or bimetal strip or a switching tongue from a spring material, which has a shape with a bent-over web, and the additional switching force after the end of the soldering process by shifting a power transmission point to the switching tongue-induced bias resulting lever force is formed.
  • the displacement of the power transmission point is derived from a rotary movement and, in this respect, the disconnect bracket has a rotary bearing.
  • the switching movement of the previously known switching tongue results from a spring tension which exerts a pretension on the switching tongue and thus the solder contact point indirectly via the disconnecting block.
  • the disconnected switching tongue executes a quick switching movement over a large opening path and thus creates a safe separation between the arrester element and the cable routing formed by the switching tongue.
  • the rotary movement carried out by the disconnect block is displayed at its end position in a viewing window, so that the switch position of the disconnect block can be recognized from the outside as a release condition by means of a display surface.
  • solder joint that connects the switching tongue to the arrester element is designed and manufactured in such a way that the separation takes place safely and at a point in time at which no thermal damage from an overheated arrester element can be foreseen. This point is initially determined by the choice of the solder, the mechanical pretension described also providing a significant portion of this.
  • the surge protection element according to DE 20 2014 103 262 U l which is intended for use between a neutral conductor and equipotential bonding in the power supply of a low-voltage network, the same has a housing and a surge-limiting component arranged in the housing with two connection contacts for the electrical connection of one to protect current paths. Furthermore, an electrically conductive connecting element and a
  • a gas-filled component is the surge-limiting component
  • the insulating separator is slidably arranged on the housing and can be moved from a first position to a second position by the force of the at least one spring element.
  • the second end of an electrically conductive connecting element is electrically conductively connected to the second electrode of the overvoltage arrester via a thermally separating connection, and the insulating separating element is fixed in a first position.
  • the thermal connection between the second end of the electrically conductive connecting element and the second electrode of the surge arrester is separated and the insulating separating element is moved into its second position by the force of the spring element, in which a section of the separating element between the second end of the electrically conductive connecting element and the second electrode of the
  • the electrically conductive connecting element is designed as an angled metallic strip and therefore has a high current carrying capacity in principle.
  • the aforementioned bend is present, which forms a contact surface which can be connected to the connection contact.
  • a stream constriction is formed in the kink area.
  • Another disadvantage is the linear displacement of the insulating separating element with the risk of tilting in the intended
  • the disconnection device for a surge arrester which is received by a supporting body, and wherein plug contacts extend from the supporting body to the external connection, which are connected to at least one arrester element of the surge arrester, has a switching tongue, which at a first end has a thermal separation point with the Arrester element and connected to a second end with one of the plug contacts.
  • the separating device comprises an insulating separating block which is pivotably mounted on the supporting body and is under spring preload, the spring preloading via the switching tongue on the thermal
  • the supporting body which receives both the arrester element and the actual separating device, is an injection-molded plastic part which is surrounded by a separate outer housing.
  • the overall arrangement formed in this way can be implemented as a plug-in part and thus as a replaceable surge arrester which can be inserted into a conventional lower part with connecting terminals.
  • the presented disconnection device according to the invention is also available for other types of surge arresters
  • the switching tongue is a rectilinear, elongated, metallic, resiliently separating strip with a rectangular shape
  • Cross section formed.
  • the cross-sectional area is realized in such a way that it is easily possible to design for maximum surge currents or maximum short-circuit currents.
  • connection to a contact surface of the arrester element takes place by means of a thermal separation point known per se, for example via a solder connection.
  • the actual thermal separation point is realized over the broad side of a first tear-off strip end.
  • connection to one of the plug contacts is made via the
  • the recess is essentially complementary to the cross-sectional area of the second tear-off strip end.
  • the disconnect block When the melting point of the thermal separation point is reached, the disconnect block is subject to a shift in position, due to the spring preload.
  • the tear-off strip is lifted off the contact point with its first tear-off strip end.
  • the disconnect stand then enters the resulting space and leads to a safe disconnection.
  • the disconnect bracket itself is designed as a rotary lever.
  • the axis of rotation is here at one end, which lies opposite the point of attack for generating the spring preload, with the result of a corresponding one Force amplification on the position of the thermal separation point located between the axis of rotation and the point of application for the spring preload.
  • the positional shift of the disconnect bracket can be seen through a viewing window in an outer housing surrounding the supporting body, so that the respective state of the surge arrester can be traced.
  • a guide projection for receiving the second tear-off strip end is formed on the support body.
  • the second tear-off strip end is soldered or welded to the plug contact.
  • the separating block is designed as a rotary slide valve and is provided with a flattening in the form of a simple inclined surface or a wedge surface on its edge facing the thermal separation point. This results in a quick and safe separation of the contact areas connected by solder, using the elasticity of the switching tongue designed as a separating strip.
  • the tear-off strip is only used in its elastic range during the tear-off movement. Plastic deformations do not occur and are not necessary on the manufacturing side.
  • the lever-reinforced forces acting on the thermal separation point can be used to overcome any blockages that may occur during the melting process due to solder residues or rough material surfaces or other unevenness.
  • Fig. 1 is a perspective view of a plug part of a
  • Fig. 3 is a detailed view for forming the connection ung one of the
  • Plug contacts over the circumference of a second separating strip end which dips into a slot-shaped recess within a section of the plug contact facing the supporting body.
  • the disconnection device according to the invention according to the exemplary embodiment can be part of a surge arrester in the form of a plug-in part, as is indicated in FIGS. 1 and 2.
  • the plug-in part shown here does not yet have an outer housing in order to make the structure and function of the disconnection device clear.
  • the plug-in part has a support body 1, one on one side
  • Has chamber-like recess which has at least one arrester element.
  • the support body has an opening 2, which allows access to a contact point 3 of the arrester element.
  • the thermal separation point known per se is implemented in this area.
  • the supporting body 1 has a curved guide 4 for receiving a spring 5 which generates a prestressing force. It should also be noted that the spring 5 is supported at one end on a stop of an insulating separating block 6 designed as a rotary slide.
  • the rotary valve sits on the axis of rotation 7, which can be designed as an extension and thus an integral element of the support body 1.
  • External connections of the surge arrester are as plug contacts 8; 9 executable, which engage in U-shaped counter contacts 10 and 11.
  • the counter contacts 10 and 11 are connected to known external connection screw terminals 12 and 13 or are part of this.
  • the switching tongue of the thermal separation point is a straight, elongated, metallic, resiliently elastic
  • Separation strips 14 are formed.
  • connection to the contact surface 3 of the arrester element takes place by means of the thermal separation point, specifically via the broad side of a first separation strip end 140.
  • the recess 15 essentially corresponds to the cross-sectional area of the second tear-off strip end 141 and is complementary to this end.
  • FIG. 3 A corresponding detailed representation can be seen in FIG. 3.
  • the disconnection block 6 When the melting point of the thermal separation point is reached, the disconnection block 6 is subject to a shift in position; this can be seen in FIGS. 1 and 2 by moving to the left.
  • the tear-off strip lifts off the contact point 3 with its first tear-off strip end 140. Furthermore, the partition block 6 enters with its area 60 into the resulting intermediate space (see FIG. 2).
  • the positional shift of the separating block 6 can be seen through a viewing window (not shown in the figures) into an outer housing (not shown) which surrounds the supporting body 1.
  • a display surface 61 is integrally formed on the dividing block 6.
  • the separating block 6 is, as can be seen from FIGS. 1 and 2, designed as a rotary slide valve. At its edge 62 facing the thermal separation point, the separation block 6 can have a flattening in the form of an inclined surface or a wedge surface in order to optimize the penetration into the separation point area and the separation process.

Landscapes

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

Abstract

L'invention concerne un dispositif de sectionnement destiné à un parafoudre qui est reçu par un corps de support et dans lequel des contacts enfichable, reliés à au moins un élément du parafoudre, s'étendent depuis le corps de support. L'invention comprend en outre une languette de commutation qui est reliée, à une première extrémité, à l'élément de sectionnement par le biais d'un point de sectionnement thermique et, à une deuxième extrémité, à l'un des contacts enfichables. En outre, un bloc de sectionnement isolant est prévu qui est logé de manière pivotante sur le corps de support en étant précontraint par un ressort. La précontrainte exercée par le ressort agit sur le point de sectionnement thermique par le biais de la languette de commutation. Selon l'invention, la languette de commutation est conçue sous la forme d'une bande de sectionnement à section droite qui est rectiligne, allongée, métallique et élastique.
EP19725355.2A 2018-06-18 2019-05-20 Dispositif de sectionnement pour parafoudre Active EP3673497B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201930096T SI3673497T1 (sl) 2018-06-18 2019-05-20 Odklopna naprava za prenapetostni odvodnik
PL19725355T PL3673497T3 (pl) 2018-06-18 2019-05-20 Urządzenie separujące do ogranicznika przepięć

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018114564.0A DE102018114564B4 (de) 2018-06-18 2018-06-18 Überspannungsableiter
PCT/EP2019/062906 WO2019242959A1 (fr) 2018-06-18 2019-05-20 Dispositif de sectionnement pour parafoudre

Publications (2)

Publication Number Publication Date
EP3673497A1 true EP3673497A1 (fr) 2020-07-01
EP3673497B1 EP3673497B1 (fr) 2021-07-14

Family

ID=66625195

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19725355.2A Active EP3673497B1 (fr) 2018-06-18 2019-05-20 Dispositif de sectionnement pour parafoudre

Country Status (9)

Country Link
US (1) US11476071B2 (fr)
EP (1) EP3673497B1 (fr)
JP (1) JP2021527929A (fr)
CN (1) CN112514008B (fr)
DE (1) DE102018114564B4 (fr)
ES (1) ES2887304T3 (fr)
PL (1) PL3673497T3 (fr)
SI (1) SI3673497T1 (fr)
WO (1) WO2019242959A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN214479600U (zh) * 2021-01-08 2021-10-22 厦门赛尔特电子有限公司 一种石墨浪涌保护器
WO2022226958A1 (fr) * 2021-04-30 2022-11-03 上海辰竹防雷科技有限公司 Module de protection contre les surtensions et dispositif de protection contre les surtensions
CN115473090B (zh) * 2022-09-27 2025-09-05 南京淳科特来电新能源有限公司 一种新能源汽车充电设备防过充装置

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DE102008048644B4 (de) * 2008-08-01 2017-08-24 DEHN + SÖHNE GmbH + Co. KG. Überspannungsschutzgerät mit einem oder mehreren parallel geschalteten, in einer baulichen Einheit befindlichen überspannungsbegrenzenden Elementen
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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
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CN204131121U (zh) 2014-11-10 2015-01-28 毛小毛 具有高结构稳定性的电涌抑制装置
DE202016107504U1 (de) 2016-06-22 2017-03-02 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzanordnung mit mindestens einem, auf einer ersten Seite einer n-eckigen Trägerplatte angeordneten, scheibenförmigen Varistor

Also Published As

Publication number Publication date
PL3673497T3 (pl) 2021-12-06
US20210125804A1 (en) 2021-04-29
WO2019242959A1 (fr) 2019-12-26
ES2887304T3 (es) 2021-12-22
CN112514008B (zh) 2022-07-19
DE102018114564B4 (de) 2023-01-19
US11476071B2 (en) 2022-10-18
SI3673497T1 (sl) 2021-11-30
CN112514008A (zh) 2021-03-16
DE102018114564A1 (de) 2019-12-19
JP2021527929A (ja) 2021-10-14
EP3673497B1 (fr) 2021-07-14

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