EP1467380B1 - Schlingenisolator - Google Patents

Schlingenisolator Download PDF

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Publication number
EP1467380B1
EP1467380B1 EP04007208A EP04007208A EP1467380B1 EP 1467380 B1 EP1467380 B1 EP 1467380B1 EP 04007208 A EP04007208 A EP 04007208A EP 04007208 A EP04007208 A EP 04007208A EP 1467380 B1 EP1467380 B1 EP 1467380B1
Authority
EP
European Patent Office
Prior art keywords
loop
insulator
shaped insulator
thimbles
loop shaped
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
EP04007208A
Other languages
English (en)
French (fr)
Other versions
EP1467380A1 (de
Inventor
Martin Hoffmann
Philippe Leray
Marten Rankers
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.)
Siemens AG
Original Assignee
Siemens 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=32864433&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1467380(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to PL04007208T priority Critical patent/PL1467380T3/pl
Publication of EP1467380A1 publication Critical patent/EP1467380A1/de
Application granted granted Critical
Publication of EP1467380B1 publication Critical patent/EP1467380B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/02—Suspension insulators; Strain insulators
    • H01B17/06—Fastening of insulator to support, to conductor, or to adjoining insulator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances

Definitions

  • the invention relates to a loop insulator with a loop-shaped insulator component, which is connected to opposite terminal thimbles.
  • Such a loop insulator is known for example from the publication of Siemens AG with the order number A52813-W3001-A0001-02-00 B1.
  • the loop insulators SICAT 8WL3001 / 3002 described there are used to insulate the live conductor of electrical tracks from ground potential.
  • the loop-shaped insulator component consists of glass-fiber-reinforced plastic, namely of a self-contained glass fiber reinforced plastic strand. At opposite ends of this loop-shaped insulator component in each case a connection fitting is arranged, which is called Renkausche.
  • connection thimbles are often made of a copper-aluminum alloy.
  • the glass fibers of the insulator component which are impregnated with epoxy resin, are wound directly onto the connection thimbles and hardened there.
  • connection thimbles always have circular openings in which connection components such as ropes, wires or bolts are held.
  • connection components such as ropes, wires or bolts are held.
  • thimble inserts made of copper-aluminum alloy, copper, brass or polyamide.
  • the loop-shaped isolator component surrounds the connection thimbles.
  • connection thimbles of the loop insulators and the connection components consist of different metals, which have different electrochemical voltages. This can lead to electrochemical corrosion as a result of the humidity. In addition, stress corrosion cracking can not be ruled out with brass connection thimbles.
  • DE 20 01 779 A describes a loop insulator made of glass fiber with thimbles, which may consist of plastic.
  • DE 679 226 C describes a loop insulator with partial porcelain insulation.
  • the invention has for its object to provide a loop insulator, which does not corrode and thus longer than a previously conventional loop insulator is ready for use.
  • connection thimbles are made entirely of ceramic.
  • the non-metallic substance is a ceramic. This has the particular advantage that a mechanically stable non-metallic substance is used.
  • loop insulator does not corrode despite the weather and therefore a longer service life than previous loop insulators is possible.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Insulators (AREA)
  • Conductive Materials (AREA)
  • Cable Accessories (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Description

  • Die Erfindung betrifft einen Schlingenisolator mit einem schlingenförmigen Isolatorbauteil, das mit einander gegenüberliegenden Anschlusskauschen verbunden ist.
  • Ein solcher Schlingenisolator ist beispielsweise aus der Veröffentlichung der Siemens AG mit der Bestellnummer A52813-W3001-A0001-02-00 B1 bekannt. Die dort beschriebenen Schlingenisolatoren SICAT 8WL3001/3002 werden eingesetzt, um die spannungsführende Oberleitung von elektrischen Bahnen vom Erdpotential zu isolieren. Das schlingenförmige Isolatorbauteil besteht aus glasfaserverstärktem Kunststoff, und zwar aus einem in sich geschlossenen glasfaserverstärkten Kunststoffstrang. An gegenüberliegenden Enden dieses schlingenförmigen Isolatorbauteils ist jeweils eine Anschlussarmatur angeordnet, die Anschlusskausche genannt wird. Diese Anschlusskauschen sind häufig aus einer Kupfer-Aluminium-Legierung gefertigt. Bei der Herstellung werden die mit Epoxidharz getränkten Glasfasern des Isolatorbauteils direkt auf die Anschlusskauschen gewickelt und dort gehärtet.
  • Die bekannten Anschlusskauschen haben stets kreisrunde Öffnungen, in denen Anschlussbauteile wie Seile, Drähte oder Bolzen gehalten werden. In den Öffnungen befinden sich Kauscheneinsätze aus Kupfer-Aluminium-Legierung, aus Kupfer, Messing oder aus Polyamid. Das schlingenförmige Isolatorbauteil umgreift die Anschlusskauschen.
  • Die bekannten Anschlusskauschen der Schlingenisolatoren und die Anschlussbauteile bestehen aus unterschiedlichen Metallen, die unterschiedliche elektrochemische Spannungen haben. Es kann dadurch in Folge der Luftfeuchte zur elektrochemischen Korrosion kommen. Außerdem ist bei Anschlusskauschen aus Messing eine Spannungsrisskorrosion nicht auszuschließen.
  • DE 20 01 779 A beschreibt einen Schlingenisolator aus Glasfaser mit Kauschen, die aus Kunststoff bestehen können. DE 679 226 C beschreibt einen Schlingenisolator mit teilweiser Porzellanisolierung.
  • Der Erfindung liegt die Aufgabe zugrunde, einen Schlingenisolator anzugeben, der nicht korrodiert und somit länger als ein bisher üblicher Schlingenisolator einsatzbereit ist.
  • Die Aufgabe wird gemäß der Erfindung dadurch gelöst, dass die Anschlusskauschen ganz aus Keramik bestehen.
  • Dadurch, dass vermieden wird, zwei elektrochemisch reagierende Metalle aneinandergrenzen zu lassen, wird die elektrochemische Korrosion vermieden. Dadurch dass gezielt spannungsrissgefährdete Metalle oder Legierungen wie Messing nicht verwendet werden, wird eine Spannungsrisskorrosion vermieden.
  • Der nichtmetallische Stoff ist eine Keramik. Damit wird der besondere Vorteil erzielt, dass ein mechanisch stabiler nichtmetallischer Stoff verwendet wird.
  • Es wird der besondere Vorteil erzielt, dass der Schlingenisolator trotz der Witterungseinflüsse nicht korrodiert und daher eine längere Einsatzzeit als bei bisherigen Schlingenisolatoren möglich ist.

Claims (1)

  1. Schlingenisolator mit einem schlingenförmigen Isolatorbauteil, das mit einander gegenüberliegenden Anschlusskauschen verbunden ist, dadurch gekennzeichnet, dass die Anschlusskauschen ganz aus Keramik bestehen.
EP04007208A 2003-04-10 2004-03-25 Schlingenisolator Expired - Lifetime EP1467380B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04007208T PL1467380T3 (pl) 2003-04-10 2004-03-25 Izolator pętlicowy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10316553 2003-04-10
DE10316553A DE10316553A1 (de) 2003-04-10 2003-04-10 Schlingenisolator

Publications (2)

Publication Number Publication Date
EP1467380A1 EP1467380A1 (de) 2004-10-13
EP1467380B1 true EP1467380B1 (de) 2007-03-21

Family

ID=32864433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04007208A Expired - Lifetime EP1467380B1 (de) 2003-04-10 2004-03-25 Schlingenisolator

Country Status (5)

Country Link
EP (1) EP1467380B1 (de)
AT (1) ATE357729T1 (de)
DE (2) DE10316553A1 (de)
ES (1) ES2282749T3 (de)
PL (1) PL1467380T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20070223A1 (it) * 2007-02-07 2008-08-08 Rosario Scarpetta Isolatore per linee elettriche

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE679226C (de) * 1930-07-15 1939-08-01 Siemens Schuckertwerke Akt Ges Hengeisolator
DE1086316B (de) * 1956-04-03 1960-08-04 Pilkington Brothers Ltd Hochspannungsisolator
DE1083372B (de) * 1957-12-13 1960-06-15 Columbia Products Company Verfahren zur Herstellung eines stabfoermigen Zugisolators
FR1282731A (fr) * 1960-12-16 1962-01-27 Neyrpic Ets Dispositif isolateur pour lignes aériennes à haute tension
DE2001779A1 (de) * 1970-01-16 1971-07-22 Siemens Ag Stabisolator fuer die Isolation von Fahrleitungen

Also Published As

Publication number Publication date
ATE357729T1 (de) 2007-04-15
ES2282749T3 (es) 2007-10-16
EP1467380A1 (de) 2004-10-13
PL1467380T3 (pl) 2007-06-29
DE502004003251D1 (de) 2007-05-03
DE10316553A1 (de) 2004-10-28

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