EP0281945B1 - Verfahren zur Herstellung eines Blitzableiters - Google Patents

Verfahren zur Herstellung eines Blitzableiters Download PDF

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Publication number
EP0281945B1
EP0281945B1 EP88103272A EP88103272A EP0281945B1 EP 0281945 B1 EP0281945 B1 EP 0281945B1 EP 88103272 A EP88103272 A EP 88103272A EP 88103272 A EP88103272 A EP 88103272A EP 0281945 B1 EP0281945 B1 EP 0281945B1
Authority
EP
European Patent Office
Prior art keywords
pellets
rod
stack
end fittings
assembly
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
EP88103272A
Other languages
English (en)
French (fr)
Other versions
EP0281945A1 (de
Inventor
René Parraud
Denis Thuillier
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.)
Societe Europeenne dIsolateurs en Verre et Composite SEDIVER SA
Original Assignee
Societe Europeenne dIsolateurs en Verre et Composite SEDIVER SA
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 Societe Europeenne dIsolateurs en Verre et Composite SEDIVER SA filed Critical Societe Europeenne dIsolateurs en Verre et Composite SEDIVER SA
Priority to AT88103272T priority Critical patent/ATE63400T1/de
Publication of EP0281945A1 publication Critical patent/EP0281945A1/de
Application granted granted Critical
Publication of EP0281945B1 publication Critical patent/EP0281945B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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; Arresters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making

Definitions

  • the present invention relates to a method of manufacturing a lightning arrester.
  • a surge arrester is a device placed between the phase and the ground of a high-voltage line and which makes it possible to limit the amplitude and the duration of atmospheric overvoltages (shock due to lightning and induction phenomena in conductors), or temporary electrical network overvoltages (operating shock).
  • a surge arrester The functions of a surge arrester are therefore on the one hand to permanently support the nominal operating voltage, and on the other hand to drain the strong discharge current appearing during a temporary overvoltage, so as to protect the equipment from the line (transformers .).
  • a core of a material of the varistor type based for example on zinc oxide ZnO, the electrical resistivity of which is highly non-linear as a function of the applied voltage.
  • the object of the present invention is to produce a surge arrester at reduced cost which does not have the drawbacks of the surge arresters previously described.
  • said core comprises hollow metal spacers interposed between pellets; thanks to the recesses, said space between the rod and said pellets is filled with elastomer at the time of molding of said coating.
  • the thickness of the shim is chosen as a function of the desired prestressing load on the pads.
  • Said shim can be placed between two pads or between a pad and one of said fittings.
  • said pellets are maintained with the rod under longitudinal compression by means of springs arranged between said faces of said fittings and the ends of said stack of pellets.
  • the ends of the rod can be fixed inside their respective fittings by gluing or shrinking.
  • the surge arresters 100 and 200 visible in FIGS. 1 and 2F are obtained by the method according to the invention shown diagrammatically in FIGS. 2A to 2E.
  • the second fitting 20 is fixed to the second end of the rod 1 by a sleeving shown diagrammatically by the arrows 24. A compact assembly has been produced.
  • a longitudinal traction 26 is applied to the two ends 25 of the fittings so as to leave a sufficient gap to introduce into the stack a metal wedge 27 having a recess 28.
  • this filling can be carried out from non-illustrated orifices provided in the end fittings. The result is a perfectly sealed and rigid mechanical assembly.
  • the last operation consists in overmolding on this assembly a finned coating 30 of EPDM elastomer which adheres perfectly to the entire outer surface of the above-mentioned assembly. ( Figure 2F).
  • the arrester 100 also has the preloaded rod 1 and an interposed hollow metal block referenced 45 between the two pads 6 and 7 with two metal washers 46 ensuring electrical continuity.
  • the arrester 300 of FIG. 3 also includes a rod 1 on which are pierced pierced pellets 6, 7, 8.
  • the ends of the rod 1 are sleeved or glued in cavities 55 provided in end fittings 52 and 53 having in off shoulders 56 and 57.
  • An insulating mixture can be introduced through orifices 70 in order to fill the gaps which may exist between the rod 1 and the pads 6, 7, 8. This mixture is chosen so as not to annihilate the compression function of the springs 61 and 63. Finally, the coating 30 is produced by overmolding.
  • the invention is not limited to the embodiments described and shown. Without departing from the scope of the invention, any means can be replaced by equivalent means.
  • the wedge of conductive material can be full. split, fan-shaped, based on slats, etc.
  • EPDM was given as an example of an elastomer, but any other insulating coating can be envisaged, for example based on resin, loaded or not ...

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Peptides Or Proteins (AREA)
  • Elimination Of Static Electricity (AREA)
  • Details Of Indoor Wiring (AREA)
  • Small-Scale Networks (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Sewing Machines And Sewing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Claims (8)

1. Verfahren zur Herstellung eines Überspannungsableiters, der zwei End-Armaturen (2, 20) zu beiden Seiten eines zentralen, im wesentlichen zylindrischen Kerns aufweist, wobei der Kern aus einem Stapel von Tabletten (6, 7, 8) aus Varistormaterial besteht, welche von Löchern durchbohrt sind, mit deren Hilfe sie auf einen zentralen Stab (1) aus geschichtetem Material aufgereiht sind, dadurch gekennzeichnet,
- daß der ganze Stapel mit Hilfe des Stabs (1) gegen zwei einander gegenüberstehende Seiten der Armaturen komprimiert wird,
- daß der Raum zwischen dem Stab (1) und den Tabletten (6, 7, 8) durch Eingießen oder Einspritzen eines Isoliermaterials ausgefüllt wird, so daß die so gebildetet Einheit völlig starr wird,
und daß das Ganze mit einer Elastomerumhüllung (30) vom Typ EPDM umkleidet wird, die an allen Oberflächen des Kerns und der Armaturen haftet, die sie bedeckt.
2. Verfahren zur Herstellung eines Überspannungsableiters nach Anspruch 1, dadurch gekennzeichnet, daß der Kern hohle metallische Abstandsstücke (45) aufweist, die zwischen Tabletten (6, 7) eingelegt sind, und daß der Raum zwischen dem Stab (1) und den Tabletten beim Aufbringen des Überzugs mit Elastomer gefüllt wird.
3. Verfahren zur Herstellung eines Überspannungsableiters nach Anspruch 1, dadurch gekennzeichnet, daß für die Kompression des Tablettenstapels zwischen zwei einander gegenüberstehende Flächen der Armaturen folgende Operationen durchgeführt werden:
- man befestigt ein erstes Ende des Stabs (1) in der ersten Armatur (2),
- man reiht die Tabletten (6, 7, 8) auf dem Stab (1) auf,
- man befestigt das zweite Ende des Stabs in der zweiten Armatur (20),
- man expandiert das Ganze in Längsrichtung, derart, daß im Stapel ein Spalt entsteht, der den Durchtritt eines hohlen Abstandsstücks (27) ermöglicht,
- man hebt die Zugspannung auf.
4. Herstellungsverfahren nach Anspruch 3, dadurch gekennzeichnet, daß das Abstandsstück (45) zwischen zwei Tabletten (6, 7) plaziert wird, wobei zwei metallische Zwischen-Unterlegscheiben (46) die elektrische Kontinuität sichern.
5. Herstellungsverfahren nach Anspruch 3, dadurch gekennzeichnet, daß das Abstandsstück (27) zwischen eine Tablette (8) und eine der Armaturen plaziert wird, wobei eine metallische Unterlegscheibe (10) die elektrische Kontinuität sichert.
6. Verfahren zur Herstellung eines Überspannungsableiters nach Anspruch 1, dadurch gekennzeichnet, daß die Tabletten (6, 7, 8) zusammen mit dem Stab mit Hilfe von Federn (61, 63) unter Anpreßdruck in Längsrichtung versetzt werden, wobei die Federn zwischen den Seiten der Armaturen (52, 53) und den Enden des Tablettenstapels angeordnet sind.
7. Verfahren zur Herstellung eines Überspannungsableiters nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Enden des Stabs um Inneren der Armaturen durch Einschnüren oder Kleben befestigt werden.
8. Verfahren zur Herstellung eines Überspannungsableiters nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet daß das Material der Tabletten Zinkoxid als Basis hat.
EP88103272A 1987-03-06 1988-03-03 Verfahren zur Herstellung eines Blitzableiters Expired - Lifetime EP0281945B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88103272T ATE63400T1 (de) 1987-03-06 1988-03-03 Verfahren zur herstellung eines blitzableiters.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8703049 1987-03-06
FR8703049 1987-03-06

Publications (2)

Publication Number Publication Date
EP0281945A1 EP0281945A1 (de) 1988-09-14
EP0281945B1 true EP0281945B1 (de) 1991-05-08

Family

ID=9348666

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88103272A Expired - Lifetime EP0281945B1 (de) 1987-03-06 1988-03-03 Verfahren zur Herstellung eines Blitzableiters

Country Status (11)

Country Link
US (1) US4825188A (de)
EP (1) EP0281945B1 (de)
JP (1) JP2647893B2 (de)
AT (1) ATE63400T1 (de)
AU (1) AU595433B2 (de)
BR (1) BR8800980A (de)
CA (1) CA1310811C (de)
DE (1) DE3862658D1 (de)
ES (1) ES2022494B3 (de)
GR (1) GR3002242T3 (de)
NO (1) NO169413C (de)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO167618C (no) * 1989-03-20 1991-11-20 Alcatel Stk As Overspenningsavleder for elektriske apparater.
FR2649243B1 (fr) * 1989-06-30 1994-04-29 Sediver Ste Europ Isolat Verre Isolateur de ligne a courant alternatif muni d'un eclateur de protection
FR2659169B1 (fr) * 1990-03-02 1992-06-19 Ferraz Dispositif parafoudre pour la protection des lignes electriques.
CH682858A5 (de) * 1991-12-04 1993-11-30 Asea Brown Boveri Ueberspannungsableiter.
FR2698736B1 (fr) * 1992-11-27 1995-03-17 Soule Sa Perfectionnements aux parafoudres à varistances notamment pour haute tension.
US5757604A (en) * 1996-06-27 1998-05-26 Raychem Corporation Surge arrester having grooved and ridged terminals
US5680289A (en) * 1996-06-27 1997-10-21 Raychem Corporation Surge arrester
US5712757A (en) * 1996-06-27 1998-01-27 Raychem Corporation Surge arrester having ridged terminals
FR2757693B1 (fr) * 1996-12-23 1999-02-19 Sediver Parafoudre avec une enveloppe ayant une surface exterieure gaufree
AU737108B2 (en) * 1997-02-25 2001-08-09 Bowthorpe Industries Limited Improvements relating to electrical surge arresters
GB2322487B (en) * 1997-02-25 2001-07-11 Bowthorpe Ind Ltd Improvements relating to electrical surge arresters
US5930102A (en) 1997-10-08 1999-07-27 Joslyn Manufacturing Co. Surge arrester having single surge arresting block
US6014306A (en) * 1998-09-24 2000-01-11 Hubbell Incorporated Electrical device with wedge insert gas seal for probe
US6519129B1 (en) 1999-11-02 2003-02-11 Cooper Industries, Inc. Surge arrester module with bonded component stack
ES2166689B1 (es) * 2000-01-26 2003-10-16 Ind De Aparellaje Electrico S Descargador de sobretensiones.
DE10020129C1 (de) * 2000-04-14 2001-11-15 Siemens Ag Baugruppe mit Überspannungsableiter für eine Hochspannungsanlage
US6279811B1 (en) 2000-05-12 2001-08-28 Mcgraw-Edison Company Solder application technique
US7015786B2 (en) * 2001-08-29 2006-03-21 Mcgraw-Edison Company Mechanical reinforcement to improve high current, short duration withstand of a monolithic disk or bonded disk stack
US7436283B2 (en) * 2003-11-20 2008-10-14 Cooper Technologies Company Mechanical reinforcement structure for fuses
US8117739B2 (en) * 2004-01-23 2012-02-21 Cooper Technologies Company Manufacturing process for surge arrester module using pre-impregnated composite
US7075406B2 (en) * 2004-03-16 2006-07-11 Cooper Technologies Company Station class surge arrester
US7633737B2 (en) * 2004-04-29 2009-12-15 Cooper Technologies Company Liquid immersed surge arrester
DE102005024206B4 (de) * 2005-05-25 2007-03-15 Tridelta Überspannungsableiter Gmbh Überspannungsableiter mit Käfig-Design
GB2546492A (en) * 2016-01-19 2017-07-26 Mpe Ip Ltd Varistors
TWI633728B (zh) * 2017-10-11 2018-08-21 呂承彰 避雷裝置及其傳輸模組
US10741313B1 (en) * 2019-02-06 2020-08-11 Eaton Intelligent Power Limited Bus bar assembly with integrated surge arrestor
CN113205933B (zh) * 2021-04-30 2023-03-21 良科电子(重庆)有限公司 一种多用途的中心轴mov组件
US11894166B2 (en) 2022-01-05 2024-02-06 Richards Mfg. Co., A New Jersey Limited Partnership Manufacturing process for surge arrestor module using compaction bladder system
US12444522B2 (en) 2022-01-05 2025-10-14 Richards Mfg. Co. Sales, Llc Manufacturing process for surge arrestor module using compaction bladder system
CN116190029B (zh) * 2022-12-27 2024-07-05 西安西电避雷器有限责任公司 一种避雷器芯体装配设备

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919448B2 (ja) * 1978-03-03 1984-05-07 株式会社日立製作所 避雷器
US4456942A (en) * 1978-08-02 1984-06-26 Rte Corporation Gapless elbow arrester
GB2073965B (en) * 1980-04-08 1984-05-02 Bowthorpe Emp Ltd Surge diverter/arrester
JPS6070702A (ja) * 1983-09-26 1985-04-22 株式会社日立製作所 防爆形酸化亜鉛避雷器
JPS6078595U (ja) * 1983-11-02 1985-05-31 日本碍子株式会社 限流要素ユニツト
DE3508030A1 (de) * 1985-02-07 1986-08-07 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Verfahren zur herstellung eines ueberspannungsableiters unter verwendung eines aktiven widerstandskoerpers aus einem spannungsabhaengigen widerstandsmaterial auf zno-basis und danach hergestellter ueberspannungsableiter
US4638285A (en) * 1985-02-28 1987-01-20 Siemens Energy & Automation, Inc. Surge suppressing resistor for a disconnect switch
JPH06103609B2 (ja) * 1986-05-22 1994-12-14 日本碍子株式会社 耐雷碍子

Also Published As

Publication number Publication date
NO169413B (no) 1992-03-09
ES2022494B3 (es) 1991-12-01
ATE63400T1 (de) 1991-05-15
AU595433B2 (en) 1990-03-29
NO169413C (no) 1992-06-17
AU1257388A (en) 1988-09-08
BR8800980A (pt) 1988-10-11
NO880941L (no) 1988-09-07
CA1310811C (fr) 1992-12-01
DE3862658D1 (de) 1991-06-13
JP2647893B2 (ja) 1997-08-27
GR3002242T3 (en) 1992-12-30
JPS63228701A (ja) 1988-09-22
EP0281945A1 (de) 1988-09-14
US4825188A (en) 1989-04-25
NO880941D0 (no) 1988-03-03

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