EP0445054B1 - Blitzableiteranordnung zum Schutz elektrischer Leitungen - Google Patents

Blitzableiteranordnung zum Schutz elektrischer Leitungen Download PDF

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Publication number
EP0445054B1
EP0445054B1 EP91420071A EP91420071A EP0445054B1 EP 0445054 B1 EP0445054 B1 EP 0445054B1 EP 91420071 A EP91420071 A EP 91420071A EP 91420071 A EP91420071 A EP 91420071A EP 0445054 B1 EP0445054 B1 EP 0445054B1
Authority
EP
European Patent Office
Prior art keywords
intermediary
stack
varistors
glue
elements
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
EP91420071A
Other languages
English (en)
French (fr)
Other versions
EP0445054A1 (de
Inventor
Christian Gazzola
Joèl Gauchon
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.)
Ferraz SA
Original Assignee
Ferraz SA
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Filing date
Publication date
Application filed by Ferraz SA filed Critical Ferraz SA
Publication of EP0445054A1 publication Critical patent/EP0445054A1/de
Application granted granted Critical
Publication of EP0445054B1 publication Critical patent/EP0445054B1/de
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
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
    • 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

Definitions

  • the present invention relates to surge protective devices intended for the protection of power lines, in particular of medium voltage overhead lines.
  • the insulating element disposed between the two capsules or terminal connection electrodes is constituted by a stack of varistors based on zinc oxide (Zn0) maintained under axial pressure.
  • this stack and the elastic pressure means are contained inside a rigid tube made of an insulating material, itself sheathed by a plastic envelope, the assembly formed by said tube and envelope giving the aforementioned stacking the mechanical strength and sealing necessary for the practical use of the device.
  • the invention consists in placing between the facing faces of the constituent elements (varistors and electrodes) of the insulation stack, intermediate parts with corrugated profile which by crushing provide the electrical connection and which are profiled to provide free areas suitable for receiving the layer of glue necessary for the mutual assembly of the aforementioned elements.
  • Fig. 1 is a schematic axial section of a lightning arrester device established in accordance with the present invention.
  • Fig. 2 is a perspective view illustrating a first embodiment of the invention, the parts being shown before assembly.
  • Fig. 3 is a vertical section showing the parts after assembly by pressing and gluing.
  • Fig. 4 and 5 respectively 6 and 7, similarly represent two alternative embodiments.
  • Fig. 8 to 11 illustrate a second embodiment of the invention.
  • the device shown in fig. 1 essentially comprises an insulating element formed by the rigid and resistant assembly of a stack of varistors 1 maintained under pressure between two terminal connection electrodes 2, which element 1-2 is covered in a sealed manner by an insulating envelope 3 which with annular projections 3a is directly obtained by overmoulding a synthetic material on said member.
  • the mode of implementation shown in fig. 2 and 3 uses a spacer 4 formed by a washer with a corrugated profile, the outside diameter of which is slightly smaller than that of each of the varistors 1. On the transverse face of each of these, a layer of glue 5 in the form of a disc, the diameter of which is less than the inside diameter of the corrugated washer 4.
  • each adhesive disc 5 is lined with an adhesive ring 50 which surrounds the washer 4.
  • the adhesive layer 5 is in the form of two rigid pads which occupy the opening of the corrugated washer 4 and which cooperate with an intermediate disc 6, capable of being made either of an elastomer or of aluminum .
  • This central disc 6 is intended to improve, by crushing, the elastic pressure effect exerted on the varistors 1.
  • FIG. 8 to 11 Illustrated in fig. 8 to 11 another embodiment of the invention, according to which the intermediate piece provided between the faces facing the varistors 1 is constituted by an insert 40 comprising a central part integral with radial branches (in number four in the example considered), each of these branches having a wavy profile.
  • Fig. 10 shows the assembly obtained after axial pressure and crushing of the corrugated profile of the insert 40. It was further assumed that the bonding was here ensured by the synthetic material which is overmolded on the insulating body of the arrester for the realization of the outer casing 3, which material is introduced at 30 between the branches of the insert 40.
  • the shape of the intermediate piece 4 or 40 can vary to a large extent, provided that this piece, due to the elastic deformability of its constituent material and having regard to its initial profile, is capable of collapsing during bonding to guarantee a good connection and that said conformation ensures the distribution of the mechanical assembly and electrical connection zones.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Insulated Conductors (AREA)
  • Non-Insulated Conductors (AREA)
  • Filters And Equalizers (AREA)

Claims (7)

  1. Blitzschutzvorrichtung für elektrische Leitungen, insbesondere für Mittelspannungs-Freileitungen, mit einem von Varistoren (1) gebildeten Stapel, der endständig Elektroden (2) aufweist und damit unter axialem Druck gehalten ist, und der im Inneren eines zum Schutz abgedichteten Gehäuses (3) angeordnet ist, dadurch gekennzeichnet, daß zwischen den den Stapel bildenden Elementen (1-2) ein Zwischenstück (4, 40) vorgesehen ist, das derart elastisch verformbar ist, daß die Güte des elektrischen Kontaktes zwischen benachbarten Elementen sichergestellt ist, und das derart geformt ist, daß freie Zwischenräume gebildet sind, geeignet zum Aufnehmen einer Klebstoffschicht (5, 50, 30) zwischen besagten Elementen, die diese mechanisch verbindet.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Zwischenstück als eine Unterlegscheibe (4) ausgebildet ist.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Zwischenstück als eine Einlage (40) ausgebildet ist, mit einem zentralen, ebenen Bereich und einer Anzahl von radial ausgerichteten Armen welligen Profils.
  4. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeich net, daß die Klebstoffverbindung ausgebildet ist in Form einer Scheibe 5, die den Zentralbereich der gegenüberliegenden äußeren Flächen der Varistoren (1) und der Elektroden (2) bedeckt.
  5. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch ge kennzeichnet, daß die Klebstoffverbindung ausgebildet ist In Form eines um das Zwischenstück (4, 40) angeordneten Ringes (50).
  6. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch ge kennzeichnet, daß die Klebstoffverbindung ausgebildet ist als eine Schichtlage (30) synthetischen Materials, welches, das Gehäuse (3) bildend, direkt auf den Stapel (1-3) aufgeschmolzen ist.
  7. Vorrichtung nach einem der Ansprüche 1, 2, 4, 5 und 6, dadurch gekennzeichnet, daß das Zwischenstück (4, 40) mit einer Zwischenscheibe (6) aus Elastomer oder Aluminium verbunden ist, um durch Quetschen den auf den Stapel (1-2) ausgeübten elastischen Druck zu verbessern.
EP91420071A 1990-03-02 1991-03-01 Blitzableiteranordnung zum Schutz elektrischer Leitungen Expired - Lifetime EP0445054B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9002897 1990-03-02
FR9002897A FR2659169B1 (fr) 1990-03-02 1990-03-02 Dispositif parafoudre pour la protection des lignes electriques.

Publications (2)

Publication Number Publication Date
EP0445054A1 EP0445054A1 (de) 1991-09-04
EP0445054B1 true EP0445054B1 (de) 1994-12-14

Family

ID=9394483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420071A Expired - Lifetime EP0445054B1 (de) 1990-03-02 1991-03-01 Blitzableiteranordnung zum Schutz elektrischer Leitungen

Country Status (8)

Country Link
EP (1) EP0445054B1 (de)
AT (1) ATE115762T1 (de)
CA (1) CA2037115A1 (de)
DE (1) DE69105779T2 (de)
DK (1) DK0445054T3 (de)
ES (1) ES2065653T3 (de)
FR (1) FR2659169B1 (de)
TR (1) TR25323A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2416834C2 (ru) * 2005-12-15 2011-04-20 Рейкэп Корпорейшн Устройства защиты от перенапряжений, содержащие пластину из варисторного материала

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH682858A5 (de) * 1991-12-04 1993-11-30 Asea Brown Boveri Ueberspannungsableiter.
DE4306691A1 (de) * 1993-03-04 1994-11-03 Abb Management Ag Ueberspannungsableiter
US6430020B1 (en) * 1998-09-21 2002-08-06 Tyco Electronics Corporation Overvoltage protection device including wafer of varistor material
DE29912703U1 (de) 1999-07-19 1999-11-11 Siemens AG, 80333 München Überspannungsableiter
ES2166689B1 (es) * 2000-01-26 2003-10-16 Ind De Aparellaje Electrico S Descargador de sobretensiones.
US8743525B2 (en) 2012-06-19 2014-06-03 Raycap Intellectual Property, Ltd Overvoltage protection devices including wafer of varistor material
US9906017B2 (en) 2014-06-03 2018-02-27 Ripd Research And Ip Development Ltd. Modular overvoltage protection units
US10319545B2 (en) 2016-11-30 2019-06-11 Iskra Za{hacek over (s)}{hacek over (c)}ite d.o.o. Surge protective device modules and DIN rail device systems including same
US10447026B2 (en) 2016-12-23 2019-10-15 Ripd Ip Development Ltd Devices for active overvoltage protection
US10707678B2 (en) 2016-12-23 2020-07-07 Ripd Research And Ip Development Ltd. Overvoltage protection device including multiple varistor wafers
US10340110B2 (en) 2017-05-12 2019-07-02 Raycap IP Development Ltd Surge protective device modules including integral thermal disconnect mechanisms and methods including same
US10685767B2 (en) 2017-09-14 2020-06-16 Raycap IP Development Ltd Surge protective device modules and systems including same
US11223200B2 (en) 2018-07-26 2022-01-11 Ripd Ip Development Ltd Surge protective devices, circuits, modules and systems including same
US11862967B2 (en) 2021-09-13 2024-01-02 Raycap, S.A. Surge protective device assembly modules
US11723145B2 (en) 2021-09-20 2023-08-08 Raycap IP Development Ltd PCB-mountable surge protective device modules and SPD circuit systems and methods including same
US11990745B2 (en) 2022-01-12 2024-05-21 Raycap IP Development Ltd Methods and systems for remote monitoring of surge protective devices
US12506334B2 (en) 2022-01-24 2025-12-23 Raycap IP Development Ltd Surge protective device modules and assemblies
US12199412B2 (en) 2022-06-02 2025-01-14 Ripd Ip Development Ltd. Surge protective devices, circuits, modules and systems including same
US12206234B2 (en) 2022-09-20 2025-01-21 Ripd Ip Development Ltd Overvoltage protection device modules
US12437906B2 (en) 2022-10-18 2025-10-07 Raycap, S.A. Surge protective devices
US12580381B2 (en) 2023-12-04 2026-03-17 Ripd Ip Development Ltd Overvoltage protection device modules and sheath bonding systems including same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4656555A (en) * 1984-12-14 1987-04-07 Harvey Hubbell Incorporated Filament wrapped electrical assemblies and method of making same
AU595433B2 (en) * 1987-03-06 1990-03-29 Societe Anonyme Dite Ceraver A method of manufacturing a lightning arrester, and a lightning arrester obtained by the method
FR2619244B1 (fr) * 1987-08-06 1992-09-04 Sediver Ste Europ Isolateurs V Procede de fabrication d'un parafoudre et parafoudre obtenu par ce procede

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2416834C2 (ru) * 2005-12-15 2011-04-20 Рейкэп Корпорейшн Устройства защиты от перенапряжений, содержащие пластину из варисторного материала

Also Published As

Publication number Publication date
DE69105779D1 (de) 1995-01-26
FR2659169B1 (fr) 1992-06-19
DK0445054T3 (da) 1995-01-23
EP0445054A1 (de) 1991-09-04
ES2065653T3 (es) 1995-02-16
ATE115762T1 (de) 1994-12-15
FR2659169A1 (fr) 1991-09-06
TR25323A (tr) 1993-01-01
CA2037115A1 (fr) 1991-09-03
DE69105779T2 (de) 1995-04-27

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