EP2238658B1 - Composant de protection électrique à dispositif de court-circuit - Google Patents

Composant de protection électrique à dispositif de court-circuit Download PDF

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Publication number
EP2238658B1
EP2238658B1 EP09706372A EP09706372A EP2238658B1 EP 2238658 B1 EP2238658 B1 EP 2238658B1 EP 09706372 A EP09706372 A EP 09706372A EP 09706372 A EP09706372 A EP 09706372A EP 2238658 B1 EP2238658 B1 EP 2238658B1
Authority
EP
European Patent Office
Prior art keywords
short
fusible element
surge arrester
electrodes
circuiting
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
EP09706372A
Other languages
German (de)
English (en)
Other versions
EP2238658A1 (fr
Inventor
Peter Bobert
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.)
TDK Electronics AG
Original Assignee
Epcos AG
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 Epcos AG filed Critical Epcos AG
Publication of EP2238658A1 publication Critical patent/EP2238658A1/fr
Application granted granted Critical
Publication of EP2238658B1 publication Critical patent/EP2238658B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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 surge arrester has a hollow body on which at least two electrodes are arranged.
  • a 2-electrode arrester has a one-piece ceramic hollow body.
  • the ceramic hollow body is divided into two separate parts by means of a middle electrode. The two parts are arranged with a first side on a central electrode. On a second side of the two parts, an end electrode is arranged in each case.
  • the electrical protection component has at least one melting element.
  • the electrical protection component has a short-circuiting device, which on the Surge arrester is arranged.
  • the short-circuit device is used, in excessively high heating of the arrester, to short-circuit the electrodes of the arrester, so that the current no longer flows through the arrester, but via the short-circuit device.
  • the short-circuiting device comprises a shorting bar which is pretensioned and presses on the fusible element by its spring force. By the fusible element of the shorting bar is spaced from the electrodes of the surge arrester.
  • the fusible element has a geometric shape, wherein the geometric shape comprises at least one cavity.
  • the cavity is a space to understand, which is formed by parts or portions of the fusible element. It may be both a closed space, as well as a space having an opening at least one side. The space is bounded at least by two faces or portions of the fusible element.
  • the melting element is tubular.
  • the melting element has the shape of a slotted tube.
  • the slot may extend partially or entirely longitudinally through the lateral surface of the tubular fusible element.
  • the melting element has the shape of a hollow cuboid.
  • the hollow cuboid may have an opening on at least one side.
  • the melting element may consist of a sheet material which has kinks or folded. It is also possible that the fusible element comprises a folded foil which is folded or formed into a polygonal body.
  • the melting element is arranged on at least one end face of the electrical protection component.
  • the fusible element is disposed at other locations of the surge arrester, wherein it is ensured that the short-circuiting bar is normally spaced by the fusible element from the electrodes of the surge arrester.
  • the melting element melts.
  • the short-circuiting bar presses against the at least two electrodes of the surge arrester and connects them electrically to one another via the short-circuiting bar.
  • the surge arrester has a center electrode.
  • the shorting bar in such a variant has a connection to the center electrode. If the surge arrester heats up excessively, the shorting bar connects the two electrodes to the center electrode via the shorting bar.
  • the melting element consists of an insulating plastic.
  • an insulating plastic for this purpose, for example polypropylene or other plastics are suitable which have electrically insulating properties.
  • the melting element has the shape of an injection molded part.
  • an injection molding process can be produced any geometric shapes.
  • the fusible element is arranged such that the greatest rigidity of the fusible element is directed in the direction of the pressure force exerted by the shorting bar.
  • the melting element has little material, but the melting element has a high static strength in relation to the small amount of material. By using the least possible material to be melted, a fast switching operation of the short-circuiting device can be achieved.
  • the electrodes of the surge arrester are short-circuited by means of the short-circuiting bar, or if the surge arrester is heated excessively, preferably no plastic material of the melting element is located between the contact surfaces of the shorting bar and the electrodes that a secure electrical contact between the shorting bar and the electrodes is ensured.
  • an electrical protection device which comprises a surge arrester 1 with two hollow bodies 9 and three electrodes 2, 6.
  • the surge arrester 1 has at the end faces in each case an electrode 2.
  • the surge arrester 1 in the illustrated embodiment has a central electrode 6.
  • the electrodes 2 and the middle electrode 6 are provided with connecting wires 7.
  • a shorting bar 5 is arranged, which has an electrical contact to the central electrode 6.
  • a fusible element 3 is arranged in each case.
  • the melting element 3 has a cavity 4.
  • the fusible element 3 is preferably arranged between the electrode 2 and the shorting bar 5, so that the greatest rigidity of the fusible element 3 is directed in the direction of the pressing force of the shorting bar 5 directed towards the fusible element 3.
  • the fusible element 3 has a tubular shape, wherein the fusible element 3 is aligned with the openings of the tube in the direction of electrode 2 and in the direction of shorting bar 5.
  • a tubular body in such an arrangement has its greatest rigidity with respect to a force acting perpendicularly on the tube in the direction of the longitudinal axis.
  • Such an arrangement makes it possible to use a fusible element 3 which has only a small amount of material compared to its dimensions.
  • the tubular body of the fusible element 3 has a slot 8, through which the connecting wire 7 of the electrode 2 is guided.
  • the slot 8 is in the FIG. 1b shown.
  • it may also be a 2-electrode arrester, wherein the short-circuit bar is mechanically connected in this case, for example by means of a ring or a clamp in the region of the hollow body with the surge arrester.
  • the FIG. 1b shows a view of the electrical protection device FIG. 1a with a view of the front side of the surge arrester 1.
  • the tubular fusible element 3 has a slot 8, through which the connecting wire 7 of the electrode 2 is guided.
  • the illustrated electrical protection device is a 3-electrode arrester.
  • a third, middle electrode 6 has an electrical contact to the shorting bar 5.
  • the shorting bar 5 connects the electrodes 2 of the surge arrester 1 to the middle electrode 6.
  • the middle electrode 6 has a larger diameter than the body of the surge arrester 1.
  • FIGS. 2a and 2b a further embodiment of an electrical protection device.
  • the surge arrester 1 of the electrical protection component has two hollow bodies 9 and at least two electrodes 2. In the illustrated embodiment, it is a 3-electrode arrester having a third, central electrode 6. The electrodes 2 and the middle electrode 6 are provided with lead wires 7 for mounting purposes.
  • the surge arrester 1 is provided with a short-circuiting device comprising a shorting bar 5.
  • the shorting bar 5 is by means of fusible elements 3 of the electrodes 2 of the surge arrester. 1 spaced.
  • the shorting bar 5 is biased and presses on the fusible elements 3.
  • the shorting bar 5 connects the two electrodes 2 to the central electrode 6.
  • the fusible element 3 preferably has a cavity 4.
  • the melting element 3 has a small quantity of material compared to the volume of the melting element 3. Due to the reduced amount of material of the fusible element 3, the fusible element 3 melts faster than a solid fusible element 3 when the overvoltage arrester 1 is excessively heated.
  • the cavity 4 of the fusible element 3 is preferably arranged such that the fusible element 3 acts in the direction of the pressing force acting on the fusible element 3 has its greatest rigidity by the shorting bar 5.
  • the FIG. 2b shows a view of the electrical protection device FIG. 2a from his front.
  • the short-circuit device comprises a shorting bar 5 which is spaced apart from the electrodes 2 of the surge arrester 1 by means of two fusible elements 3.
  • the shorting bar 5 has an electrical contact with a middle electrode 6 of the surge arrester 1 on. In the event of excessive heating of the surge arrester 1, the fusible elements 3 melt and the short-circuit bar 5 generates a short circuit between the two electrodes 2 and the middle electrode 6.
  • the invention is not limited to these. It is possible in principle to use any desired shape of the fusible element, with geometric shapes which have one or more cavities and thereby have a smaller amount of material than a solid fusible element are particularly suitable.
  • the invention is not limited to the number of elements shown.

Claims (7)

  1. Composant de protection électrique doté d'un dispositif de mise en court-circuit, le composant présentant :
    un conducteur (1) d'évacuation des surtensions doté d'au moins deux électrodes (2), chacune munie d'un fil de raccordement (7),
    au moins un élément fusible (3) dont la forme géométrique comprend au moins une cavité (4),
    un étrier de court-circuit (5) disposé sur le conducteur (1) d'évacuation des surtensions,
    l'étrier de court-circuit (5) repoussant l'élément fusible (3),
    l'étrier de court-circuit (5) étant maintenu à distance des électrodes (2) au moyen de l'élément fusible (3),
    l'élément fusible (3) comportant une matière synthétique isolante et étant disposé entre l'étrier de court-circuit (5) et l'une des électrodes (2) sur le côté frontal du conducteur (1) d'évacuation des surtensions,
    caractérisé en ce que
    l'élément fusible est configuré en tube doté d'une fente (8),
    en ce que l'ouverture du tube de l'élément fusible (3) est orientée vers l'électrode (2) et l'autre ouverture du tube est orientée vers l'étrier de court-circuit (5) et
    en ce que le fil de raccordement (7) de l'électrode (2) est passé par la fente (8).
  2. Composant de protection électrique doté d'un dispositif de mise en court-circuit présentant :
    un conducteur (1) d'évacuation de court-circuit qui présente au moins deux électrodes (2),
    au moins un élément fusible (3) dont la forme géométrique comporte au moins une cavité (4),
    un étrier de court-circuit (5) disposé sur le conducteur (1) d'évacuation des surtensions,
    l'étrier de court-circuit (5) repoussant l'élément fusible (3),
    l'étrier de court-circuit (5) étant maintenu à distance des électrodes (2) au moyen de l'élément fusible (3),
    l'élément fusible (3) comportant une matière synthétique isolante et étant disposé entre l'étrier de court-circuit (5) et l'une des électrodes (2), caractérisé en ce que
    l'élément fusible est formé d'une feuille repliée en un corps polygonal.
  3. Composant de protection électrique selon la revendication 2, l'élément fusible (3) étant disposé sur au moins un côté frontal du conducteur (1) d'évacuation des surtensions.
  4. Composant de protection électrique selon l'une des revendications précédentes, dans lequel l'élément fusible (3) fond lorsque le conducteur (1) d'évacuation des surtensions est chauffé trop fortement.
  5. Composant de protection électrique selon l'une des revendications précédentes, dans lequel l'étrier de court-circuit (5) présente une liaison électrique avec une électrode centrale (6).
  6. Composant de protection électrique selon l'une des revendications précédentes, dans lequel l'élément fusible (3) est une pièce moulée par injection.
  7. Composant de protection électrique selon l'une des revendications précédentes, dans lequel la rigidité de l'élément fusible (3) est la plus grande dans la direction de la force de poussée exercée par l'étrier de court-circuit (5).
EP09706372A 2008-01-31 2009-01-27 Composant de protection électrique à dispositif de court-circuit Not-in-force EP2238658B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008006992 2008-01-31
DE102008022833A DE102008022833A1 (de) 2008-01-31 2008-05-08 Elektrisches Schutzbauelement mit Kurzschlussseinrichtung
PCT/EP2009/000514 WO2009095205A1 (fr) 2008-01-31 2009-01-27 Composant de protection électrique à dispositif de court-circuit

Publications (2)

Publication Number Publication Date
EP2238658A1 EP2238658A1 (fr) 2010-10-13
EP2238658B1 true EP2238658B1 (fr) 2013-03-13

Family

ID=40822265

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09706372A Not-in-force EP2238658B1 (fr) 2008-01-31 2009-01-27 Composant de protection électrique à dispositif de court-circuit

Country Status (7)

Country Link
US (1) US8274775B2 (fr)
EP (1) EP2238658B1 (fr)
JP (1) JP5466178B2 (fr)
KR (1) KR20100117623A (fr)
CN (1) CN101933203B (fr)
DE (1) DE102008022833A1 (fr)
WO (1) WO2009095205A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9177899B2 (en) 2012-07-31 2015-11-03 Mediatek Inc. Semiconductor package and method for fabricating base for semiconductor package
DE102014103419B4 (de) * 2014-03-13 2018-05-24 Epcos Ag Überspannungsableiter mit Schutz vor Erwärmung
DE102015121438B4 (de) * 2015-12-09 2023-12-28 Tdk Electronics Ag Elektrisches Schutzbauelement mit Kurzschlusseinrichtung
US10741313B1 (en) * 2019-02-06 2020-08-11 Eaton Intelligent Power Limited Bus bar assembly with integrated surge arrestor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4303959A (en) * 1977-10-18 1981-12-01 Tii Industries, Inc. Fail safe surge arrester systems
US5029302A (en) * 1990-08-29 1991-07-02 Illinois Tool Works Fail safe gas tube

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422121A (en) * 1982-05-28 1983-12-20 Reliance Electric Company Line protector for a communications circuit
DE3410610A1 (de) * 1984-03-22 1985-09-26 Siemens AG, 1000 Berlin und 8000 München Sicherungselement fuer leitungen der elektrischen nachrichtentechnik
FR2574589B1 (fr) * 1984-12-12 1989-06-02 Tubes Lampes Electriq Cie Indl Dispositif de mise en court-circuit exterieur de faible encombrement
FR2575864B3 (fr) * 1985-01-08 1987-07-10 Nozick Jacques Dispositif de mise en court-circuit pour parasurtension
JPH0227694U (fr) * 1988-08-10 1990-02-22
JPH0297786U (fr) * 1989-01-19 1990-08-03
JP3290209B2 (ja) * 1992-08-22 2002-06-10 新光電気工業株式会社 避雷管
DE9321371U1 (de) * 1993-04-21 1997-09-04 Siemens Ag Gasentladungs-Überspannungsableiter
FR2704380B1 (fr) * 1993-04-23 1995-06-09 Pouyet Int Module de protection enfichable pour module d'interconnexion rapide de lignes telephoniques.
DE69415043T2 (de) * 1993-09-29 1999-05-06 Russel William Adam Schutzvorrichtung für geöffneten kreis
JP3662077B2 (ja) * 1996-07-19 2005-06-22 Ｎｅｃフィールディング株式会社 熱開閉器
DE19708651A1 (de) 1997-02-21 1998-09-03 Siemens Ag Gasgefüllter Überspannungsableiter mit äußerer Kurzschlußeinrichtung
US6864462B2 (en) * 2001-05-25 2005-03-08 Solar Wide Industrial, Ltd. Electronic drinking mug

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4303959A (en) * 1977-10-18 1981-12-01 Tii Industries, Inc. Fail safe surge arrester systems
US5029302A (en) * 1990-08-29 1991-07-02 Illinois Tool Works Fail safe gas tube

Also Published As

Publication number Publication date
CN101933203B (zh) 2015-02-25
DE102008022833A1 (de) 2009-08-06
EP2238658A1 (fr) 2010-10-13
WO2009095205A1 (fr) 2009-08-06
US20110013334A1 (en) 2011-01-20
KR20100117623A (ko) 2010-11-03
CN101933203A (zh) 2010-12-29
JP2011511405A (ja) 2011-04-07
JP5466178B2 (ja) 2014-04-09
US8274775B2 (en) 2012-09-25

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