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EP1234361B1 - Dispositif de protection contre les surtensions charge de gaz et dote de connexions d'electrodes sous forme de brides de type bandes - Google Patents

Dispositif de protection contre les surtensions charge de gaz et dote de connexions d'electrodes sous forme de brides de type bandes Download PDF

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Publication number
EP1234361B1
EP1234361B1 EP00945608A EP00945608A EP1234361B1 EP 1234361 B1 EP1234361 B1 EP 1234361B1 EP 00945608 A EP00945608 A EP 00945608A EP 00945608 A EP00945608 A EP 00945608A EP 1234361 B1 EP1234361 B1 EP 1234361B1
Authority
EP
European Patent Office
Prior art keywords
electrode
gas
surge arrester
clip
filled surge
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.)
Expired - Lifetime
Application number
EP00945608A
Other languages
German (de)
English (en)
Other versions
EP1234361A2 (fr
Inventor
Jürgen Boy
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 EP1234361A2 publication Critical patent/EP1234361A2/fr
Application granted granted Critical
Publication of EP1234361B1 publication Critical patent/EP1234361B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 invention is in the field of overvoltage protection for communication networks and deals with the structural design of the power supply elements to the electrodes of a gas-filled surge arrester.
  • gas-filled surge arresters are used in communication networks and the associated devices, which have one or two or three discharge paths and this consist of two end electrodes and optionally another electrode in the form of a center electrode and one or two hollow cylindrical ceramic insulators.
  • the ceramic insulator is usually soldered to the end electrodes on the front side ( US 4,266,260 A
  • the ceramic insulators are soldered either peripherally or frontally both to the center electrode and to one end electrode each time ( US 3,885,203 A . US 4,212,047 A ).
  • the contacting of the electrodes at its outer periphery takes place either within a housing by means of resilient clamps or by means of connecting wires, which are tangentially, radially or axially soldered or welded to one electrode at one end and at its other end with provided a plug-in contact element or are designed for a soldering ( US 4,212,047 .
  • the invention has for its object to simplify the assemblability of the band-like clamps and thereby to extend their function as possible.
  • each clamp associated with an end electrode is resilient in the circumferential direction.
  • the clamp is provided by means of a two-legged, bracket-like bulge.
  • the electrical connection of the respective end electrode can be prefabricated in the context of an automatic manufacturing process and also pushed onto the respective end electrode. The spring tension of the clamp is sufficient to ensure a secure contact with the respective end electrode at normal and average current load.
  • a trained according to the invention clamp can also perform other functions when used in three-electrode arresters for contacting the two end electrodes and forms sufficiently wide.
  • the clamp can be placed on the surge arrester, that it projects beyond the foot part of the respective end electrode axially by a certain length.
  • Parts of a short-circuit device electrically connected to the center electrode can be assigned to this projecting region of the clamp, if appropriate in addition also parts of an auxiliary discharge path which is electrically connected in parallel to the gas discharge path.
  • a melting disk and a spacer are arranged within the projecting portion of the clamp; in the case of a clamp with a clamp-like bulge, the clamp can furthermore be assigned a disc-shaped auxiliary electrode, the diameter of which is at least equal to the outer diameter of the clamp and which is held by means of the fusion disc and the spacer at a distance from the edge of the clamp and pressed by a spring against the spacer.
  • This spring may be a known spring clip ( US 4,984,125 , Fig. 1) act. But you can also use a coil spring or a spring washer, which is fixed by means of a fixed to the center electrode, U-shaped bracket.
  • - In the disk-shaped auxiliary electrode at a distance from the edge of the clamp holding spacer may be in a known manner to an insulator or - preferably - to a varistor (see US 5,388,023 , Figure 1).
  • the shorting device is formed by the flat top surface of the cap and the free, engaging in the center opening of the cap end of a connected to the center electrode spring clip, wherein the short-circuiting device of the flat top surface of the cap and the free formed in the center opening of the cap engaging end of a connected to the center electrode spring clip, wherein the free end of the spring clip by means of a fusion disk and the auxiliary discharge path, which are arranged within the cap, is kept at a distance from the planar top surface of the cap, and the melting disk or the auxiliary discharge path is insulated from the planar top surface of the cap by means of an insulating centering piece.
  • the auxiliary discharge path consists of a varistor, which is isolated by means of the insulating centering. As an auxiliary discharge gap but can also serve a perforated mica foil on which the melt disc is applied in isolation from the cap.
  • Figure 1 shows a schematic representation of a three-electrode arrester 1, the two ceramic insulators 11 and 12 has on both sides of a central electrode 13 and on the one end electrode, not shown, an electrical connection in the form of a tight-fitting clamp 2 is placed. A similar clamp 2 is shown near the end electrode 14.
  • This clamp which consists of an annular metal band 21, whose ends are soldered or welded to a terminal 22, is provided on the periphery, approximately opposite to the terminal 22, with a two-legged, bracket-like bulge 23, whereby the clamp 2 is resilient in the circumferential direction ,
  • the clamp can be pushed onto the flange-like base part 15 of the end electrode 14, wherein the dimensions of the foot part 15 of the end electrode 14 and the clamp 2 are selected so that a sufficient contact pressure is given.
  • the diameter of the foot part 15 should be slightly larger than the diameter of the ceramic insulator 11 or 12.
  • Figure 2 shows a two-electrode arrester, which has a ceramic insulator 31, a first end electrode 33 and a second end electrode not shown in detail, wherein on each end electrode a resiliently shaped clamp 2 is placed.
  • Figure 3 shows a detail of a three-electrode arrester according to Figure 1, which is supplemented by a short-circuiting device and combined with auxiliary discharge paths.
  • the width b of the clamp 24 placed on the end electrode 14 is so large that the clamp not only covers part of the surface of the ceramic insulator 12 but also projects axially beyond the end electrode 14.
  • a cylindrical space is formed, in which a disc 4 made of a fusible material and a spacer 5 are arranged in the form of a varistor, wherein the spacer 5 is arranged centered by means of a rubber-like ring 6 within the clamp 24.
  • the assembly consisting of melt disk 4 and varistor 5 is still associated with a disk-shaped, centrally perforated auxiliary electrode 7, which bears against the spacer / varistor 5 and is held by means of the free end of a fixed to the center electrode 13 spring clip 8.
  • auxiliary electrode 7 contacts the edge of the clamp 24.
  • FIG. 4 shows a variant of FIG. 3, the essential difference being that, instead of a disc-shaped auxiliary electrode, a cap-shaped auxiliary electrode 84 is provided, in which a fusible disc 41 and a spacer / varistor 5 are arranged and whose edge 85 is within the projecting region of FIG Clamp 24 faces the foot part 15 of the end electrode.
  • the auxiliary electrode 84 is centered by means of an insulating ring 10 and kept isolated from the clamp 24 at a distance.
  • FIG. 5 shows another variant of FIG. 3, the essential difference being that the contact with the center electrode 13 is made via a non-resilient U-shaped bracket 82 which presses a spring washer 83 against the auxiliary electrode 71.
  • the spring washer - shown to the right of the arrester in the relaxed state - is located on the disc-shaped Auxiliary electrode 71, which is provided on both sides with centering surfaces 72 and 73 for the centric assignment of the spring washer 83 and for the centric assignment of the spacer / varistor 5 within the protruding portion of the clamp 24.
  • FIG. 6 shows a two-electrode arrester 3 with ceramic insulator 31 and end electrodes 33 and 34, wherein each end electrode is to be assigned a clamp 25 in the form of a cap with a hollow-cylindrical edge region 26 and a planar cover region 27 provided with a central opening 28.
  • the cap 25 is further designed with a power connection 29.
  • the cap on the circumference of the edge region 26 is provided with a plurality of point or bead-like indentations 30 which cause when pushing the cap 25 to an end electrode that the cap is resiliently applied to the foot region of the respective end electrode and contacted.
  • FIG. 7 shows a three-electrode arrester 1, on whose end electrodes a respective cap 25 is placed.
  • the cap can also be part of a short-circuiting device connected to the center electrode 13 and optionally additionally an auxiliary discharge path connected in parallel electrically to the gas discharge path of the arrester.
  • a cap 25 is used with sufficient height h, to arrange within the cap a fuser disc 4 and a spacer 5, wherein the spacer is arranged in the form of a varistor using an insulating centering 9 to a short circuit in the normal operating state between the free end 84 of the spring clip 8 and the cap 25 to prevent.

Landscapes

  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Thermistors And Varistors (AREA)

Claims (13)

  1. Parafoudre (1) chargé de gaz et comportant au moins deux électrodes dont deux électrodes (14) sont des électrodes terminales munies d'une partie de pied (15) en collerette,
    et au moins un isolateur céramique (12) cylindrique creux qui est brasé frontalement à la partie de pied (15) d'une électrode terminale et à une autre électrode (13),
    une borne électrique sous forme d'une bride (2, 24, 25) appliquée étroitement étant associée à la partie de pied (15) de chaque électrode et entourant aussi sur une partie de la longueur axiale l'isolateur céramique (12) voisin de la partie de pied (15) et dont les extrémités (22) en saillie radiale sont reliées l'une à l'autre par combinaison de matériau,
    caractérisé en ce que chaque bride (2 ; 24, 25) est élastique en direction périphérique.
  2. Parafoudre chargé de gaz selon la revendication 1, caractérisé en ce que la bride (2) comporte un bombement (23) à deux branches en forme d'agrafe.
  3. Parafoudre chargé de gaz selon la revendication 1 ou 2, comportant, outre deux électrodes terminales, aussi une électrode centrale qui sert de troisième électrode (13), caractérisé en ce que la bride (24) dépasse axialement de la partie de pied (14) de l'électrode terminale correspondante, des parties d'un dispositif de court-circuit (4, 5, 7, 24) en liaison électrique avec l'électrode centrale étant associées à la zone saillante.
  4. Parafoudre chargé de gaz selon la revendication 3, caractérisé en ce que des parties d'une voie (5) de décharge auxiliaire montée électriquement en parallèle à la voie de décharge dans un gaz sont en outre associées à la zone saillante de la bride (24).
  5. Parafoudre chargé de gaz selon la revendication 4, caractérisé en ce que le dispositif de court-circuit comporte une électrode auxiliaire (7) en disque, dont le diamètre est au moins égal au diamètre extérieur de la bride (24) et qui est maintenue à distance du bord de la bride grâce à un disque fusible (4) et à une entretoise (5) placés à l'intérieur de la partie saillante de la bride et est poussée contre l'écarteur (5) à l'aide d'un ressort (8).
  6. Parafoudre chargé de gaz selon la revendication 5, caractérisé en ce que l'écarteur (5) est une varistance.
  7. Parafoudre chargé de gaz selon la revendication 5 ou 6, caractérisé en ce que le ressort est fixé à l'aide d'un étrier (82) en U retenu à l'électrode centrale.
  8. Parafoudre chargé de gaz selon la revendication 7, caractérisé en ce que le ressort est un ressort en spirale ou un ressort plat (83).
  9. Parafoudre chargé de gaz selon la revendication 1, caractérisé en ce que la bride a la forme d'un capuchon (25) comportant une zone de bord (26) cylindrique creuse et une zone de recouvrement (27) munie d'une ouverture centrale (28), la zone de bord (26) à la périphérie comportant plusieurs empreintes (30) en moulure s'appliquant à la partie de pied de l'électrode terminale (33) correspondante.
  10. Parafoudre chargé de gaz selon la revendication 9, comportant, outre deux électrodes terminales aussi une électrode centrale qui sert de troisième électrode (13), caractérisé en ce que la bride (25) dépasse axialement de la partie de pied (15) de l'électrode terminale (14) correspondante, la zone saillante faisant partie d'un dispositif de court-circuit (4 ; 84) en liaison électrique avec l'électrode centrale (13).
  11. Parafoudre chargé de gaz selon la revendication 9, caractérisé en ce que la bride (25) fait en outre partie d'une voie de décharge auxiliaire (5) montée électriquement en parallèle à la voie de décharge dans un gaz.
  12. Parafoudre chargé de gaz selon la revendication 11, caractérisé en ce que le dispositif de court-circuit est formé par la surface de recouvrement (27) plane du capuchon (25) et par l'extrémité libre (84) - qui pénètre dans l'ouverture centrale (28) du capuchon - d'un étrier élastique (8) relié à l'électrode centrale (13), l'extrémité libre (84) de l'étrier élastique étant maintenue à distance de la surface de recouvrement (27) plane du capuchon à l'aide d'un disque fusible (4) et de la voie de décharge auxiliaire (5) situés à l'intérieur du capuchon (25) et le disque fusible (4) ou la voie de décharge auxiliaire (5) étant isolé de la surface de recouvrement (27) plane du capuchon (25) à l'aide d'une pièce de centrage (9) isolante.
  13. Parafoudre chargé de gaz selon la revendication 12, caractérisé en ce que la voie de décharge auxiliaire (5) est une varistance disposée de façon isolée à l'aide de la pièce de centrage (9) isolante.
EP00945608A 1999-06-16 2000-06-07 Dispositif de protection contre les surtensions charge de gaz et dote de connexions d'electrodes sous forme de brides de type bandes Expired - Lifetime EP1234361B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19928322 1999-06-16
DE19928322A DE19928322A1 (de) 1999-06-16 1999-06-16 Gasgefüllter Überspannungsableiter mit Elektrodenanschlüssen in Form bandartiger Schellen
PCT/DE2000/001862 WO2000077900A2 (fr) 1999-06-16 2000-06-07 Dispositif de protection contre les surtensions charge de gaz et dote de connexions d'electrodes sous forme de brides de type bandes

Publications (2)

Publication Number Publication Date
EP1234361A2 EP1234361A2 (fr) 2002-08-28
EP1234361B1 true EP1234361B1 (fr) 2007-08-22

Family

ID=7911981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00945608A Expired - Lifetime EP1234361B1 (fr) 1999-06-16 2000-06-07 Dispositif de protection contre les surtensions charge de gaz et dote de connexions d'electrodes sous forme de brides de type bandes

Country Status (7)

Country Link
US (1) US6724605B1 (fr)
EP (1) EP1234361B1 (fr)
JP (1) JP2003502811A (fr)
AT (1) ATE371284T1 (fr)
CA (1) CA2376905A1 (fr)
DE (2) DE19928322A1 (fr)
WO (1) WO2000077900A2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10059534C1 (de) * 2000-11-30 2002-06-27 Epcos Ag Elektrisches Bauelement, Anordnung des Bauelements und Verfahren zur Herstellung der Anordnung
DE10134752B4 (de) * 2001-07-17 2005-01-27 Epcos Ag Überspannungsableiter
DE10162916A1 (de) * 2001-12-20 2003-07-10 Epcos Ag Federbügel, Überspannungsableiter mit dem Federbügel und Anordnung eines Überspannungsableiters
DE10253166A1 (de) * 2002-11-14 2004-05-27 Epcos Ag Kontaktelement und gasgefüllter Überspannungsableiter mit dem Kontaktelement
BRPI0418994B1 (pt) * 2004-08-06 2014-12-23 Huber + Suhner Ag Disposição de protetor de sobretensão de desligamento automático
DE102005016848A1 (de) * 2005-04-12 2006-10-19 Epcos Ag Überspannungsableiter
WO2007033247A2 (fr) 2005-09-14 2007-03-22 Littelfuse, Inc. Limiteur de surtension rempli de gaz, compose d'activation, rubans d'amorçage et procede associe
US7974063B2 (en) * 2007-11-16 2011-07-05 Corning Cable Systems, Llc Hybrid surge protector for a network interface device
US8125752B2 (en) * 2009-04-17 2012-02-28 John Mezzalingua Associates, Inc. Coaxial broadband surge protector

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DE2103007C3 (de) 1971-01-22 1974-07-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Kaltkathoden-Gasentladungsröhre
DE7114566U (de) * 1971-04-16 1971-08-26 Quante W Spezialfabrik Fuer Apparate Der Fernmeldetechni Federnde endkappe fuer sicherungselemente
GB1411492A (en) 1973-03-23 1975-10-29 M O Valve Co Ltd Excess voltage arresters
US4212047A (en) 1976-08-31 1980-07-08 Tii Corporation Fail-safe/surge arrester systems
DE2749392A1 (de) 1977-11-04 1979-05-10 Wickmann Werke Ag Adapter fuer stabfoermige koerper, wie ueberspannungsableiter, schmelzsicherungseinsaetze etc.
DE2828650C3 (de) 1978-06-29 1982-03-25 Siemens AG, 1000 Berlin und 8000 München Überspannungsableiter
DE3207663A1 (de) * 1982-03-03 1983-09-08 Siemens AG, 1000 Berlin und 8000 München Ueberspannungsableiter mit einem gasgefuellten gehaeuse
JPS58204483A (ja) * 1982-05-25 1983-11-29 株式会社　水戸テツク 避雷管
DE3410610A1 (de) * 1984-03-22 1985-09-26 Siemens AG, 1000 Berlin und 8000 München Sicherungselement fuer leitungen der elektrischen nachrichtentechnik
JPH0227694U (fr) 1988-08-10 1990-02-22
DE58907951D1 (de) 1989-01-18 1994-07-28 Siemens Ag Funkenstreckenbauelement für geschirmte Anordnung.
DE9321371U1 (de) 1993-04-21 1997-09-04 Siemens AG, 80333 München Gasentladungs-Überspannungsableiter
DE4318366A1 (de) * 1993-04-21 1994-10-27 Siemens Ag Gasentladungs-Überspannungsableiter
FR2708791B3 (fr) * 1993-07-30 1995-11-17 Amp France Cosse pour batterie.
CA2160521A1 (fr) 1994-10-13 1996-04-14 Juergen Boy Dispositif anti-surtension trois electrodes a coupure dans un gaz
DE19528140A1 (de) * 1995-05-20 1996-11-21 Alcatel Kabel Ag Vorrichtung zum elektrisch leitenden Kontaktieren eines metallischen Rohres
CA2186707A1 (fr) * 1995-09-29 1997-03-30 Gerhard Lange Eliminateur de surtension a remplissage de gaz

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Title
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Also Published As

Publication number Publication date
WO2000077900A3 (fr) 2002-06-20
CA2376905A1 (fr) 2000-12-21
US6724605B1 (en) 2004-04-20
WO2000077900A2 (fr) 2000-12-21
DE50014594D1 (de) 2007-10-04
DE19928322A1 (de) 2000-12-21
JP2003502811A (ja) 2003-01-21
ATE371284T1 (de) 2007-09-15
EP1234361A2 (fr) 2002-08-28

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