EP0304690A1 - Procédé de fabrication d'un parafoudre et parafoudre obtenu par ce procédé - Google Patents

Procédé de fabrication d'un parafoudre et parafoudre obtenu par ce procédé Download PDF

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Publication number
EP0304690A1
EP0304690A1 EP88112616A EP88112616A EP0304690A1 EP 0304690 A1 EP0304690 A1 EP 0304690A1 EP 88112616 A EP88112616 A EP 88112616A EP 88112616 A EP88112616 A EP 88112616A EP 0304690 A1 EP0304690 A1 EP 0304690A1
Authority
EP
European Patent Office
Prior art keywords
stack
spacers
fittings
manufacturing
envelope
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.)
Withdrawn
Application number
EP88112616A
Other languages
German (de)
English (en)
French (fr)
Inventor
Denis Thuillier
Guy Thevenet
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
Publication of EP0304690A1 publication Critical patent/EP0304690A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the present invention relates to a method of manufacturing a lightning arrester and a lightning arrester obtained by this method.
  • a surge arrester is a device which is 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 overvoltages in the network (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.
  • This characteristic of non-linearity allows such a surge arrester to let pass: - a low current (for example of the order of 0.5 mA / cm2) when the operating voltage is permanently applied to the surge arrester which then has very high resistance.
  • This current is essentially of capacitive origin since the relative permittivity of such varistors is very high.
  • - a strong current, which can reach several tens of kiloamperes, when the applied voltage reaches a starting threshold from which the resistance of the varistors becomes very low.
  • surge arresters using a central core comprising several stacked cylindrical pads, of varistor type material, and two extreme fittings in electrical contact with the pads, for example by means of springs.
  • a stack of the pellets is produced with very resistant springs interposed and extreme fittings, by applying a significant compression which can go up to several tens of kg / cm2 along the direction of the stacking axis.
  • a filament winding of resin-impregnated glass fibers is then carried around the assembly thus compressed. The winding is carried out at a very small angle relative to said axis; the fiber is stretched successively around a shoulder of a fitting then around the corresponding shoulder of the opposite fitting.
  • Such a winding has very high mechanical strength in the longitudinal direction, intended to balance the prestress induced in the stack of pellets before and during winding.
  • Resistance to such a longitudinal prestress necessarily implies the creation of shear stresses at the interface between the stack of pellets and the envelope formed by the taut filament winding, in particular in the event of thermal variations, since the materials constituting the have very different mechanical characteristics.
  • the detachment of the envelope relative to the stack can then be the site of partial discharges or of sufficient arcing activity which can, in the more or less long term, lead to degradation and even to total short-circuit. from the whole.
  • the present invention aims to implement a method of manufacturing a lightning arrester resulting in a more reliable product than the lightning arrester of the prior art.
  • the present invention relates to a method of manufacturing a lightning arrester in which first of all a stack of pellets is made of a varistor type material with spacers, extreme fittings, and means for ensuring electrical continuity between the pellets, and between the pellets and the two fittings, then a filament winding is carried out around this assembly, a process characterized by the fact that said stack is mounted in a device for producing said filament winding, so that only perfect coaxiality of all its constituents is obtained, that said filament winding of glass fibers impregnated with resin is carried out in such a way that it ensures adhesion and radial shrinking of said stack, without longitudinal compression, - And that, after the polymerization of the resin of the envelope thus formed, a coating of elastomeric material of the type is injected thereon EPDM
  • the filament winding therefore has the sole function of joining the pellets together, being very adherent both on their lateral surface and on that of the spacers, and having a very high mechanical resistance in the radial direction.
  • the angle of the turns is very open relative to the axis of said stack.
  • the winding angle relative to the axis of the assembly is between 80 ° and 90 °.
  • tubular spacers inside which are arranged electrical connection means between the metallized faces of two adjacent pads. They also have recesses to guide said pads radially.
  • Said electrical connection means are constituted for example by a low pressure spring associated with metal lamellae applied respectively against said metallized faces.
  • said electrical connection means consist of a wire welded to metal strips applied respectively against said metallized faces.
  • the invention also relates to a surge arrester comprising a stack of pellets of a varistor type material with spacers and end fittings, and a casing made of glass fibers impregnated with resin, characterized in that the said spacers are tubular , that they comprise, like the end fittings, in internal housings means for ensuring the electrical connection throughout the stack, that said envelope provides radial shrinking of said stack without axial compression, with adhesion to the lateral surfaces of said pellets, said spacers and said fittings, and that said envelope is provided with a finned coating of injected elastomer.
  • a stack having a common axis 10 is produced by interposing between the pellets 1 tubular spacers 2, which may be metallic or insulating. They have a recess 12 allowing radial guidance of the pellets 1, and an internal housing 13; likewise, the fittings 3 comprise a recess 15 and a housing 14.
  • the spacers 2 have a sealing function and prevent the resin impregnating the fibers 4 from infiltrating between the pellets 1.
  • These spacers can be made of a resin similar to that of the impregnation resin so to further promote the adhesion of the envelope.
  • a finned coating 5 of elastomer for example EPDM, is injected thereon.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
EP88112616A 1987-08-06 1988-08-03 Procédé de fabrication d'un parafoudre et parafoudre obtenu par ce procédé Withdrawn EP0304690A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8711201A FR2619244B1 (fr) 1987-08-06 1987-08-06 Procede de fabrication d'un parafoudre et parafoudre obtenu par ce procede
FR8711201 1987-08-06

Publications (1)

Publication Number Publication Date
EP0304690A1 true EP0304690A1 (fr) 1989-03-01

Family

ID=9353973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112616A Withdrawn EP0304690A1 (fr) 1987-08-06 1988-08-03 Procédé de fabrication d'un parafoudre et parafoudre obtenu par ce procédé

Country Status (8)

Country Link
US (1) US4864456A (no)
EP (1) EP0304690A1 (no)
JP (1) JP2761219B2 (no)
AU (1) AU603916B2 (no)
BR (1) BR8803902A (no)
CA (1) CA1305513C (no)
FR (1) FR2619244B1 (no)
NO (1) NO172462C (no)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU603020B2 (en) * 1988-12-06 1990-11-01 Asea Brown Boveri Ab Surge arrester
EP0397163A1 (fr) * 1989-05-12 1990-11-14 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Enveloppe étanche à base d'enroulement filamentaire, et parafoudre composite en faisant application
EP0406099A1 (fr) * 1989-06-30 1991-01-02 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Isolateur de ligne à courant alternatif muni d'un éclateur de protection
EP0443178A2 (en) * 1990-02-23 1991-08-28 AMERACE CORPORATION (a Delaware corporation) Surge arrester with rigid insulating housing
EP0445054A1 (fr) * 1990-03-02 1991-09-04 FERRAZ Société Anonyme Dispositif parafoudre pour la protection des lignes électriques
FR2698736A1 (fr) * 1992-11-27 1994-06-03 Soule Sa Perfectionnements aux parafoudres à varistances notamment pour haute tension.
FR2726118A1 (fr) * 1994-10-19 1996-04-26 Girard Francois Dispositif parafoudre

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5220480A (en) * 1990-10-16 1993-06-15 Cooper Power Systems, Inc. Low voltage, high energy surge arrester for secondary applications
CH682858A5 (de) * 1991-12-04 1993-11-30 Asea Brown Boveri Ueberspannungsableiter.
US5363266A (en) * 1992-06-18 1994-11-08 Raychem Corporation Electrical surge arrester
US5594613A (en) * 1992-10-09 1997-01-14 Cooper Industries, Inc. Surge arrester having controlled multiple current paths
US5959822A (en) * 1995-12-22 1999-09-28 Hubbell Incorporated Compact lightning arrester assembly
US5652690A (en) * 1996-01-26 1997-07-29 General Electric Company Lightning arrester having a double enclosure assembly
US6014306A (en) * 1998-09-24 2000-01-11 Hubbell Incorporated Electrical device with wedge insert gas seal for probe
JP2001023807A (ja) * 1999-07-09 2001-01-26 Toshiba Corp 避雷器およびその製造方法
FR2800903B1 (fr) 1999-10-25 2001-12-21 Soule Materiel Electr Parafoudre perfectionne a base de varistances electriques
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
JP2007182654A (ja) * 2006-01-02 2007-07-19 Tokiko Irino 蒸れ防止靴下
DE102017214287A1 (de) * 2017-08-16 2019-02-21 Siemens Aktiengesellschaft Überspannungsableiter und Herstellungsverfahren für einen Überspannungsableiter
US11636960B2 (en) * 2018-08-30 2023-04-25 Siemens Energy Global GmbH & Co. KG Surge arrester and production method for a surge arrester

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE898603C (de) * 1946-10-19 1953-12-03 Dietrich Mueller Hillebrand Dr Ventilelement fuer UEberspannungsableiter
DE3544141A1 (de) * 1984-12-14 1986-06-26 Hubbell Inc Harvey Umwickelte elektrische anordnungen und verfahren zum herstellen solcher

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3698920A (en) * 1967-08-30 1972-10-17 Gen Electric Porous ceramic insulating material and method of making employing wax
JPS6015127B2 (ja) * 1980-04-07 1985-04-17 株式会社日立製作所 電圧非直線抵抗体およびその製法
US4404614A (en) * 1981-05-15 1983-09-13 Electric Power Research Institute, Inc. Surge arrester having a non-fragmenting outer housing
JPS5819485U (ja) * 1981-07-29 1983-02-05 日立化成工業株式会社 モ−ルド型アレスタ−
DK173921B1 (da) * 1986-01-29 2002-02-18 Bowthorpe Ind Ltd Elektrisk overspændingsafledningsindretning, fremgangsmåde og apparat til fremstilling samt en anvendelse af en sådan indretning

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE898603C (de) * 1946-10-19 1953-12-03 Dietrich Mueller Hillebrand Dr Ventilelement fuer UEberspannungsableiter
DE3544141A1 (de) * 1984-12-14 1986-06-26 Hubbell Inc Harvey Umwickelte elektrische anordnungen und verfahren zum herstellen solcher

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU603020B2 (en) * 1988-12-06 1990-11-01 Asea Brown Boveri Ab Surge arrester
US5050032A (en) * 1989-05-12 1991-09-17 Sediver Societe Europeenne D'isolateurs En Verre Et Composite Sealed envelope based on a filamentary winding, and application to a composite lightning arrester
EP0397163A1 (fr) * 1989-05-12 1990-11-14 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Enveloppe étanche à base d'enroulement filamentaire, et parafoudre composite en faisant application
FR2646957A1 (fr) * 1989-05-12 1990-11-16 Sediver Ste Europ Isolateurs V Enveloppe etanche a base d'enroulement filamentaire, et parafoudre composite en faisant application
AU627875B2 (en) * 1989-05-12 1992-09-03 Societe Anonyme dite: Sediver Societe Europeene d'Isolateurs En Verre Et Composite A sealed envelope based on a filamentary winding, and application to a composite lightning arrester
FR2649243A1 (fr) * 1989-06-30 1991-01-04 Sediver Ste Europ Isolat Verre Isolateur de ligne a courant alternatif muni d'un eclateur de protection
EP0406099A1 (fr) * 1989-06-30 1991-01-02 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Isolateur de ligne à courant alternatif muni d'un éclateur de protection
EP0443178A2 (en) * 1990-02-23 1991-08-28 AMERACE CORPORATION (a Delaware corporation) Surge arrester with rigid insulating housing
EP0443178A3 (en) * 1990-02-23 1992-10-21 Amerace Corporation (A Delaware Corporation) Surge arrester with rigid insulating housing
EP0445054A1 (fr) * 1990-03-02 1991-09-04 FERRAZ Société Anonyme Dispositif parafoudre pour la protection des lignes électriques
FR2659169A1 (fr) * 1990-03-02 1991-09-06 Ferraz Dispositif parafoudre pour la protection des lignes electriques.
TR25323A (tr) * 1990-03-02 1993-01-01 Ferraz Elektrik hatlarinin korunmasi icin amaclanmis yildirimsavar tertibat
FR2698736A1 (fr) * 1992-11-27 1994-06-03 Soule Sa Perfectionnements aux parafoudres à varistances notamment pour haute tension.
EP0605265A1 (fr) * 1992-11-27 1994-07-06 Soule Materiel Electrique Parafoudres à varistances notamment pour haute tension
FR2726118A1 (fr) * 1994-10-19 1996-04-26 Girard Francois Dispositif parafoudre
WO1996013043A1 (fr) * 1994-10-19 1996-05-02 Girard Francois Dispositif parafoudre
US5831808A (en) * 1994-10-19 1998-11-03 Girard; Francois Lightning arrester device

Also Published As

Publication number Publication date
NO172462B (no) 1993-04-13
FR2619244B1 (fr) 1992-09-04
NO172462C (no) 1993-07-21
FR2619244A1 (fr) 1989-02-10
CA1305513C (fr) 1992-07-21
NO883458D0 (no) 1988-08-04
AU2045788A (en) 1989-02-09
JPS6465804A (en) 1989-03-13
JP2761219B2 (ja) 1998-06-04
BR8803902A (pt) 1989-02-28
AU603916B2 (en) 1990-11-29
NO883458L (no) 1989-02-07
US4864456A (en) 1989-09-05

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