EP2238659B1 - Composant de protection electrique a dispositif de court-circuit - Google Patents

Composant de protection electrique a dispositif de court-circuit Download PDF

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Publication number
EP2238659B1
EP2238659B1 EP09706809A EP09706809A EP2238659B1 EP 2238659 B1 EP2238659 B1 EP 2238659B1 EP 09706809 A EP09706809 A EP 09706809A EP 09706809 A EP09706809 A EP 09706809A EP 2238659 B1 EP2238659 B1 EP 2238659B1
Authority
EP
European Patent Office
Prior art keywords
clip
section
surge arrester
electrical protection
protection component
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
EP09706809A
Other languages
German (de)
English (en)
Other versions
EP2238659A1 (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 EP2238659A1 publication Critical patent/EP2238659A1/fr
Application granted granted Critical
Publication of EP2238659B1 publication Critical patent/EP2238659B1/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

  • An electrical protection device with short-circuiting device is made WO-A-87/06399 known.
  • the surge arrester has a hollow body, on which at least two electrodes are arranged.
  • a surge arrester with two electrodes 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 a thermal short-circuit device.
  • the short-circuit device includes a clip that is snapped onto the surge arrester of the electrical protection device.
  • the clip has at least two sections. At least a first section of the clip is snapped onto the surge arrester and encompasses this by more than half.
  • the first section of the shorting bar thus serves preferably for fastening the shorting bar to the surge arrester. At least the ends of the first section have mechanical contact with the surge arrester. However, in a further embodiment, the ends of the first section may also be spaced from the surge arrester, wherein at least a portion of the first section is arranged on the surge arrester such that the short-circuiting device can still be securely fastened to the surge arrester. The remainder of the first portion may rest on or be spaced from the surge arrester.
  • the clip includes at least a second portion surrounding the first portion and spaced from the first portion by a fuser member.
  • the second portion has at one end a shorting bar that is radially spaced from the surge arrester. In the case of melting of the fuse element, the shorting bar electrically connects at least two external electrodes of the surge arrester.
  • the first section of the clip preferably surrounds the surge arrester by more than half. This will prevent the clip from firing the shorting mechanism is pushed away from the surge arrester.
  • the first section of the clip thus serves as an abutment for the shorting bar.
  • the third, middle electrode may have a slightly larger diameter than the two hollow bodies and the two end electrodes.
  • the middle electrode may preferably project beyond the hollow bodies and the end electrodes in the radial direction.
  • the clip comprises a bent ribbon which may have one or more recesses.
  • the recesses serve to ensure that the clip can be fixed against slipping in the area of the middle electrode in the case of a 3-electrode arrester.
  • the recesses preferably have the width of the central electrode, so that the central electrode protrudes partially into the recesses of the clip. Slippage of the clip in the axial direction is thereby suppressed.
  • the fusible element In the region of the fusible element is preferably a recess, which is preferably somewhat smaller in size than the fusible element, so that the fusible element can not slip through the recess and would make it difficult to snap the shorting clips on the surge arrester.
  • the melting element has a gradation on at least one side, so that at least a part of the melting element protrudes into the recess.
  • the melting element at least partially makes direct contact with the middle electrode of the Surge arrester on.
  • the recess in the region of the melting element is preferably so large that the central electrode protrudes so far through the recess that the middle electrode has a direct contact with the melting element.
  • the clip preferably comprises an elongated ribbon, with the shorting bar being wider than the rest of the clip.
  • the first and second portions of the clip are formed by a one-piece part.
  • the clip is composed of at least two parts.
  • the first portion of the clip is formed by a first part and the second portion by a second part.
  • the second section may be formed by regions of the first part and of a second part.
  • the parts of the clip made of different materials.
  • At least the shorting bar is made of an electrically conductive material.
  • a material with resilient properties is suitable for this purpose.
  • a material comprising beryllium copper is suitable for this purpose.
  • Beryllim copper is particularly well suited for a short circuit clip as it retains its spring force even in the event of excessive heating.
  • Beryllium copper has a long-lasting spring force.
  • Beryllium copper has better electrical conductivity than spring steel.
  • the flat strip for the clip can be produced inexpensively and without great technical effort from example beryllium copper by stamping.
  • the flat strip is brought in one embodiment, for example by bending in the desired shape.
  • the two prepared parts are joined together and mechanically joined together.
  • the two parts are directly connected to each other by means of a welded connection.
  • the clip is preferably snapped onto it in the region of a middle electrode of the surge arrester.
  • 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 melting element is preferably designed such that it melts at unacceptably high heating of the surge arrester.
  • the fusible element may be made of a material comprising solder.
  • materials comprising plastic are suitable.
  • Particularly suitable are forms that have the largest possible volume with a small amount of material. In this case, in particular hollow body, such as tubular body are suitable.
  • the fusible element is preferably arranged such that the shorting bar is spaced from the external electrodes by the fusible element.
  • the clip presses on the outer electrodes of the surge arrester and electrically connects them together.
  • the shorting bar connects the outer electrodes to the middle electrode.
  • it is a surge arrester in SMD design. It is also possible that this is a Surge arrester with wire contacts for conventional mounting is.
  • the shorting clip is designed such that the already pre-assembled shorting clip including the fuse element is snapped onto the surge arrester, in particular after the surge arrester has been soldered onto, for example, a mounting substrate.
  • the short circuit clip can also be snapped onto the surge arrester before installation.
  • the short-circuit clip thus has the advantage that it can be snapped on after soldering or soldering on the surge arrester.
  • the melting element is already arranged in the preassembled short circuit clip, so that the melting element does not have to be retrofitted.
  • FIGS. 1a and 1b an electrical protection device is shown, which comprises a surge arrester 1.
  • the surge arrester 1 has at the ends in each case an electrode 2, which in FIG. 1b are shown.
  • the surge arrester 1 has a central electrode 8, which projects beyond the hollow body and the electrodes 2 in the radial direction.
  • a short circuit clip 3 is snapped, having a first portion 4, the ends 4a and 4b on the surge arrester 1 present. A portion of the first portion 4 between the two ends 4a and 4b may be spaced from the surge arrester 1 and does not need to rest flush on the surge arrester 1.
  • a second section 5 of the clip 3 is spaced from the surge arrester 1.
  • the second section 5 has a shorting bar 6 at one end.
  • the shorting bar 6 of the second section 5 is spaced from the first section 4 b and thus also from the surge arrester 1 by means of a fusible element 7.
  • the shorting bar 6 is biased by the spring force of the clip 3 and presses on the fusible element 7.
  • the shorting bar 6 is designed such that it electrically connects the two electrodes 2 in the case of melting of the fusible element 7. In the case of inadmissibly high heating of the surge arrester 1, the melting element 7 melts and thereby clears the way for the shorting bar 6, which presses on the melting element 7.
  • the shorting bar 6 thus presses on the outer electrodes 2 of the surge arrester 1.
  • the shorting clip 3 has the shorting bar 6 at one end of the second section 5.
  • the width over the majority of the length of the shorting clip 3 is preferably smaller than the width of the shorting bar 6.
  • the shorting clip 3 may have one or more recesses 9a, 9b.
  • the recesses 9a, 9b are in the illustrated embodiment in a first portion 4 of the Short circuit clips 3.
  • the second section 5 has more recesses.
  • FIG. 2a shows a further embodiment of an electrical protective device with a short-circuiting device.
  • a clip 3 On a surge arrester 1, which has one electrode at each end, a clip 3 is snapped.
  • the clip 3 consists in this embodiment of two parts, wherein a first part forms a first portion 4 and a second portion 5 is formed by a second part.
  • the first section 4 has two ends 4a and 4b which rest on the surge arrester 1.
  • the area of the first section 4 between the two ends 4a and 4b may be spaced from or resting on the surge arrester 1.
  • a shorting bar 6 At one end of the second section 5, a shorting bar 6 is arranged.
  • the shorting bar 6 presses on a melting element 7, which is arranged between the shorting bar 6 and the end 4 b of the first section 4 and thus also between the shorting bar 6 and the surge arrester 1.
  • a melting element 7 melts and thereby clears the way for the shorting bar 6.
  • the shorting bar 6 thus presses on the electrodes 2 and connects them electrically to one another.
  • the shorting clip 3 has the first section 4. Between the two ends 4a and 4b of the first portion 4 a plurality of recesses 9a, 9b are arranged.
  • the recesses 9a, 9b serve to guide the clip 3 on the middle electrode 8.
  • the recesses 9a, 9b preferably have a width on, which corresponds to the width of the central electrode 8.
  • the melting element 7 is at least on the edges of the recess 9a.
  • the fusible element 7, which has a gradation in the size of the recess 9a a direct thermal contact with the central electrode 8.
  • the second portion 5 of the shorting clip 3 has at one end a shorting bar 6.
  • the first section 4 is firmly connected to the second section 5 via at least two connection points.
  • the second portion 5 is connected to the first portion 4 by means of welding spots, one or more welding lines or one or more welding surfaces.
  • the width of the first section 4 preferably corresponds to the width of the second section 5.
  • the width over most of the length of the shorting clip 3 is preferably smaller than the width of the shorting bar 6 at the end of the second section 5.
  • FIG. 3a shows a further embodiment of an electrical protective device with a short-circuiting device.
  • a short-circuit clip 3 On a surge arrester 1, which has an outer electrode 2 at the ends, a short-circuit clip 3 is snapped.
  • the shorting clip 3 in this embodiment consists of two parts, a first part forming a first section 4.
  • a second section 5 of the shorting clip 3 is formed by a tab 4c of the first part and a second part, wherein the two parts of the second section 5 are interconnected via at least two connection points.
  • the first section 4 has two ends 4a and 4b which rest on the surge arrester 1. A portion of the first portion 4 between the two ends 4a and 4b may be spaced from the surge arrester 1.
  • a shorting bar 6 At one end of a second section 5, a shorting bar 6 is arranged.
  • the shorting bar 6 presses on a melting element 7, which is arranged between the shorting bar 6 and the end 4 b of the first section 4 and thus also the surge arrester 1. In the case of melting of the fusible element 7, the shorting bar 6 thus presses on the outer electrodes 2 and connects them electrically to one another and to the middle electrode 8.
  • the shorting clip 3 has the first section 4. Between the two ends 4a and 4b of the first section 4, a recess 9a is arranged. A tab 4c of the first section 4 forms with a second part of the second section 5, wherein the tab 4c is firmly connected at least two connection points with the second part. Preferably, the second part is connected to the tab 4c of the first section 4 by means of welding.
  • the second section 5 of the shorting clip 3 has a shorting bar 6 at one end.
  • the width of the region 4c of the first part preferably corresponds to the width of the second section 5.
  • the shorting clip 3 preferably has its greatest width in the region of the shorting bar 6 at the end of the second section 5.
  • FIG. 4a shows a further embodiment of an electrical protective device according to the FIG. 1a ,
  • an integral short-circuit clip 3 is arranged, which has a first portion 4 and a second portion 5.
  • the second section 5 of the shorting clip 3 is by means of a fusible element 7 in the region of the shorting bar 6 from the first section 4 of Short circuit clips 3 spaced.
  • the melting element 7 has a size sufficient for the melting element 7 to rest on at least two sides of the edge of the recess 9a of the first section 4 of the shorting clip 3.
  • the melting element 7 has in the FIG. 4a no direct contact with the central electrode 8 and thus not to the surge arrester 1 on.
  • FIG. 4b is an end 4b of the first portion 4 of the shorting clip 3 after FIG. 4a shown, wherein the end 4b has a recess 9a.
  • a melting element 7 is arranged in the region of the recess 9a.
  • the melting element 7 is preferably arranged such that it rests on at least two sides of the edge of the recess 9a.
  • the FIG. 5a shows a further embodiment of an electrical protective device as in FIG. 1a is shown.
  • the melting element 7, which is arranged between the first section 4 and the second 5 section of the shorting clip 3, has a step 10 on at least one side in the illustrated embodiment.
  • the gradation 10 is preferably only so large that the melting element 7 protrudes with the step 10 in the recess 9a.
  • the predominant part of the fusible element 7 preferably has a size which is at least sufficient for the fusible element 7 to rest on at least two sides of the edge of the recess 9a.
  • the melting element 7, by means of the step 10, preferably has a direct contact with the central electrode 8.
  • the melting element 7 has in the FIG. 5a Thus, the best possible thermal contact with the central electrode 8 and thus to the surge arrester 1 on.
  • FIG. 5b is an end 4b of the first portion of the shorting clip 3 after FIG. 1a shown.
  • the end 4b has a recess 9a, in the region of which a melting element 7 is arranged.
  • the fusible element 7 protrudes with at least one step 10 into the recess 9a, preferably far enough that the fusible element 7 has a direct contact with the middle electrode.
  • the FIG. 6a shows a further embodiment of an electrical protective device as shown in the FIGS. 4a and 5a is shown.
  • the recess 9a is preferably so large that the central electrode 8 protrudes into the recess 9a far enough that it has direct contact with the melting element 7.
  • the melting element 7 is preferably so large that it rests on at least two sides of the edge of the recess 9 a, wherein it compared to that in the FIGS. 5a and 5b illustrated embodiment, preferably does not protrude into the space generated by the recess 9a.
  • the fact that the central electrode 8 protrudes into the recess 9a so far that it has a direct contact with the melting element 7, the best possible thermal contact with the fusible element 7 is present.
  • FIG. 6b is an end 4b of the first section of the shorting clip after FIG. 6a shown, wherein the end 4b has a recess 9a.
  • a melting element 7 is arranged in the region of the recess 9a.
  • the recess 9 a is preferably so large that a part of the middle electrode 8 has a direct contact with the fusible element 7.
  • the invention is not limited to these. It is in principle possible to connect the clip from more than two parts, or to choose a different shape of the clip. For example, it is possible to connect two snapped on the surge arrester first sections with a second portion having a shorting bar at one end. As a result, for example, a more stable attachment of the shorting clip on the surge arrester is possible.

Landscapes

  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (15)

  1. Composant de protection électrique avec un dispositif de court-circuit présentant
    - un parafoudre (1) qui présente au moins deux électrodes (2),
    - un dispositif de court-circuit thermique, le dispositif de court-circuit thermique comprenant une pince (3) qui présente au moins deux sections (4, 5),
    - au moins une première section (4) de la pince (3) étant enclipsée sur le parafoudre (1),
    - une deuxième section (5) présentant à une extrémité un étrier de court-circuit (6), caractérisé en ce
    - qu'au moins la deuxième section (5) de la pince (3) est espacée de la première section (4) au moyen d'un élément fusible (7), et
    - l'étrier de court-circuit (6) reliant électriquement entre elles les électrodes (2) du parafoudre (1) en cas de fusion de l'élément fusible (7) .
  2. Composant de protection électrique selon la revendication 1, dans lequel la première (4) et la deuxième (5) section du clip (3) sont formées par une partie d'un seul tenant.
  3. Composant de protection électrique selon la revendication 1, dans lequel la pince (3) se compose d'au moins deux parties.
  4. Composant de protection électrique selon la revendication 3, dans lequel la première section (4) de la pince (3) est formée par une première partie et la deuxième section (5) est formée par une deuxième partie.
  5. Composant de protection électrique selon l'une des revendications précédentes, dans lequel la première section (4) entoure le parafoudre (1) sur plus de la moitié.
  6. Composant de protection électrique selon l'une des revendications précédentes, dans lequel au moins les extrémités (4a, 4b) de la première section (4) présentent un contact mécanique avec le parafoudre (1).
  7. Composant de protection électrique selon l'une des revendications 3 à 6, dans lequel les parties de la pince (3) se composent du même matériau ou dans lequel les parties de la pince (3) se composent de matériaux différents.
  8. Composant de protection électrique selon l'une des revendications précédentes, dans lequel la pince (3) présente au moins un évidement (9a, 9b) au moins dans la zone d'une section (4, 5).
  9. Composant de protection électrique selon l'une des revendications précédentes, dans lequel la pince (3) est enclipsée sur le parafoudre (1) dans la zone d'une électrode centrale (8) de celui-ci.
  10. Composant de protection électrique selon la revendication 9, dans lequel l'évidement (9a, 9b) présente une largeur qui correspond à la largeur de l'électrode centrale (8).
  11. Composant de protection électrique selon la revendication 10, dans lequel la pince (3) est fixée dans la zone de l'électrode centrale (8) au moyen de l'évidement (9a, 9b).
  12. Composant de protection électrique selon la revendication 9, dans lequel la pince (3) relie électriquement l'électrode centrale (8) avec l'électrode extérieure (2) en cas de fusion de l'élément fusible (7).
  13. Composant de protection électrique selon l'une des revendications précédentes, dans lequel l'élément fusible (7) est conçu de telle sorte qu'il fond en cas d'échauffement excessivement élevé du parafoudre (1).
  14. Composant de protection électrique selon l'une des revendications précédentes, lequel peut être monté en surface.
  15. Composant de protection électrique selon l'une des revendications précédentes, dans lequel l'élément fusible (7) présente un contact thermique direct avec l'électrode centrale (8).
EP09706809A 2008-01-31 2009-01-27 Composant de protection electrique a dispositif de court-circuit Not-in-force EP2238659B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008006991 2008-01-31
DE102008022794A DE102008022794A1 (de) 2008-01-31 2008-05-08 Elektrisches Schutzbauelement mit Kurzschlusseinrichtung
PCT/EP2009/000515 WO2009095206A1 (fr) 2008-01-31 2009-01-27 Composant de protection électrique à dispositif de court-circuit

Publications (2)

Publication Number Publication Date
EP2238659A1 EP2238659A1 (fr) 2010-10-13
EP2238659B1 true EP2238659B1 (fr) 2011-11-09

Family

ID=40822264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09706809A Not-in-force EP2238659B1 (fr) 2008-01-31 2009-01-27 Composant de protection electrique a dispositif de court-circuit

Country Status (8)

Country Link
US (1) US8203819B2 (fr)
EP (1) EP2238659B1 (fr)
JP (1) JP5303576B2 (fr)
KR (1) KR20100117614A (fr)
CN (1) CN101983462B (fr)
AT (1) ATE533213T1 (fr)
DE (1) DE102008022794A1 (fr)
WO (1) WO2009095206A1 (fr)

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DE102007056183B4 (de) * 2007-11-21 2020-01-30 Tdk Electronics Ag Überspannungsableiter mit thermischem Überlastschutz, Verwendung eines Überspannungsableiters und Verfahren zum Schutz eines Überspannungsableiters
JP5248374B2 (ja) * 2009-03-13 2013-07-31 新光電気工業株式会社 ３極避雷管
DE102010036909B3 (de) 2010-08-06 2012-02-16 Phoenix Contact Gmbh & Co. Kg Thermische Überlastschutzvorrichtung
DE102010038070B4 (de) 2010-08-06 2012-10-11 Phoenix Contact Gmbh & Co. Kg Thermische Überlastschutzvorrichtung
DE102011052390A1 (de) 2011-08-03 2013-02-07 Phoenix Contact Gmbh & Co. Kg Thermische Überlastschutzvorrichtung
US20150079425A1 (en) * 2012-04-23 2015-03-19 Mitsubishi Electric Corporation Bypass switch
DE102013019391B4 (de) 2013-04-11 2022-04-28 Dehn Se Anordnung zum Überlastschutz von Überspannungsschutzgeräten
DE202014100428U1 (de) * 2014-01-31 2014-02-12 Epcos Ag Schaltungsanordnung zum Überspannungsschutz
DE102014103419B4 (de) * 2014-03-13 2018-05-24 Epcos Ag Überspannungsableiter mit Schutz vor Erwärmung
DE102014116440B4 (de) 2014-11-11 2016-05-19 Epcos Ag Ableiter
DE102015121438B4 (de) * 2015-12-09 2023-12-28 Tdk Electronics Ag Elektrisches Schutzbauelement mit Kurzschlusseinrichtung
DE102018129679B4 (de) 2018-11-26 2020-07-30 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzvorrichtung mit thermischer Überlastschutzvorrichtung
DE202018006385U1 (de) 2018-11-26 2020-03-19 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzvorrichtung mit thermischer Überlastschutzvorrichtung

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Publication number Priority date Publication date Assignee Title
US3975664A (en) * 1975-07-28 1976-08-17 Reliable Electric Company Line protector for communication circuit
JPS5933690U (ja) * 1982-08-27 1984-03-01 富士通株式会社 ガス入り放電管
WO1987006399A1 (fr) * 1986-04-09 1987-10-22 Schaltbau Gesellschaft Mbh Dispositif pour proteger un coupe-circuit de surtension contre une surchage thermique
EP0308553A1 (fr) * 1987-09-24 1989-03-29 Semitron Industries Limited Ensemble de suppression de transitoires
JPH01122585A (ja) * 1987-11-05 1989-05-15 Sankooshiya:Kk 避雷器装置
FR2670624A1 (fr) * 1990-12-14 1992-06-19 Pensar Ind Court-circuit et boitier pour parafoudre.
DE4118738C1 (fr) * 1991-06-05 1992-12-24 Krone Ag, 1000 Berlin, De
US5450269A (en) * 1993-09-17 1995-09-12 Hsieh; Kin L. Grounding arrangement for a protector in telecommunications
DE19708651A1 (de) * 1997-02-21 1998-09-03 Siemens Ag Gasgefüllter Überspannungsableiter mit äußerer Kurzschlußeinrichtung
DE10162916A1 (de) * 2001-12-20 2003-07-10 Epcos Ag Federbügel, Überspannungsableiter mit dem Federbügel und Anordnung eines Überspannungsableiters
US7974063B2 (en) * 2007-11-16 2011-07-05 Corning Cable Systems, Llc Hybrid surge protector for a network interface device

Also Published As

Publication number Publication date
KR20100117614A (ko) 2010-11-03
CN101983462B (zh) 2013-03-13
ATE533213T1 (de) 2011-11-15
US20110013335A1 (en) 2011-01-20
US8203819B2 (en) 2012-06-19
DE102008022794A1 (de) 2009-08-06
WO2009095206A1 (fr) 2009-08-06
JP5303576B2 (ja) 2013-10-02
JP2011511406A (ja) 2011-04-07
EP2238659A1 (fr) 2010-10-13
CN101983462A (zh) 2011-03-02

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