EP0225840A1 - Dérivateurs de surtensions muni d'une partie de connexion pour installations de commutation de moyenne tension - Google Patents

Dérivateurs de surtensions muni d'une partie de connexion pour installations de commutation de moyenne tension Download PDF

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Publication number
EP0225840A1
EP0225840A1 EP86730158A EP86730158A EP0225840A1 EP 0225840 A1 EP0225840 A1 EP 0225840A1 EP 86730158 A EP86730158 A EP 86730158A EP 86730158 A EP86730158 A EP 86730158A EP 0225840 A1 EP0225840 A1 EP 0225840A1
Authority
EP
European Patent Office
Prior art keywords
arrester
stack
surge arrester
plug
shield electrode
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Withdrawn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
EP86730158A
Other languages
German (de)
English (en)
Inventor
Manfred Dipl.-Ing. Brill
Johannes Kirch
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0225840A1 publication Critical patent/EP0225840A1/fr
Withdrawn legal-status Critical Current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
    • H01T4/20—Arrangements for improving potential distribution
    • 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
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/28—Capacitor type

Definitions

  • the present invention has for its object to provide a surge arrester with plug connector for medium-voltage switchgear in a simple manner so that the required space is low.
  • the insulating bushing closes off the grounded cylindrical housing and extends only above the conductor stack surrounded by SF6, the voltage-side end of which is electrically conductively connected to an annular shield electrode with a rounded end edge , which surrounds the upper part of the arrester stack at a distance.
  • the shield electrode is advantageously formed from sheet metal in a hood-like manner, the end edge being bent back to form a curve, its manufacture is simplified.
  • a pressed or cast part made of a plastic with conductive fillers could also be used as the shield electrode.
  • the conductivity of the elastic plastic in particular, could also be achieved by a conductive coating. Combinations between metal and conductive plastic are also possible.
  • An overvoltage arrester which is to be installed in a simple manner in medium-voltage switchgear, consists of a plug connection part 1 and an arrester part 2, which forms a self-contained component.
  • the arrester part 2 has a cylindrical, grounded, metallic housing 3, which contains the arrester stack 4.
  • the housing 3 has an upper flange part 5, in which the insulating bushing 6 is arranged.
  • the lower end of the cylindrical housing 3 is closed by a cover 7, which as Holding device for the arrester stack 4 serves and carries the steel spring 8, which causes a spring-loaded elastically yielding storage of the arrester stack 4.
  • the arrester stack 4 consists of stacked, in a suitable manner with each other, for. B. by gluing, connected disks of zinc oxide.
  • the lower end of the arrester stack 4 is held and grounded by the cover 7 with the steel spring 8, while the upper, voltage-side end 9 of the arrester stack 4 is connected to the conductor 10 passing through the insulating bushing 6.
  • the shield electrode 11 is arranged at this upper voltage-side end 9 of the arrester stack 4, which is designed like a hood and the rear wall 12 of which is also penetrated by the conductor 10.
  • the shield electrode 11 is self-centering.
  • the shield electrode 11 is pressed from sheet metal. Its end edge 13 is bent back to form a curve, so that the rounded end of the shield electrode 11, which is favorable in terms of the electrical field, is obtained without great expenditure of material.
  • the cover 7 is fitted gas-tight into the cylindrical housing 3 and also contains an overpressure relief device 14 in the form of an overpressure membrane.
  • the fastening of the upper flange part 5 on the cylindrical housing 3 and the fitting of the insulating bushing 6 on the flange part 5 is also designed to be gas-tight.
  • a further improvement in the voltage control can be brought about by an inner curvature 15 of the upper flange part 5 which is adapted to the shape of the rear wall 12 of the shield electrode 11 len, as well as by rounding the insulating bushing 6 on its surface projecting into the housing 3 or the flange part 5.
  • voltage-controlling pads 16 are also provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gas-Insulated Switchgears (AREA)
EP86730158A 1985-11-05 1986-10-16 Dérivateurs de surtensions muni d'une partie de connexion pour installations de commutation de moyenne tension Withdrawn EP0225840A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19858531511 DE8531511U1 (de) 1985-11-05 1985-11-05 Überspannungsableiter mit Steckanschlußteil für Mittelspannungsschaltanlagen
DE8531511U 1985-11-05

Publications (1)

Publication Number Publication Date
EP0225840A1 true EP0225840A1 (fr) 1987-06-16

Family

ID=6787043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86730158A Withdrawn EP0225840A1 (fr) 1985-11-05 1986-10-16 Dérivateurs de surtensions muni d'une partie de connexion pour installations de commutation de moyenne tension

Country Status (2)

Country Link
EP (1) EP0225840A1 (fr)
DE (1) DE8531511U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007027411A1 (de) * 2007-06-11 2008-12-18 Siemens Ag Überspannungsableiteranordnung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469146A (en) * 1967-09-08 1969-09-23 Westinghouse Electric Corp Submersible lightning arrester for cable circuits
GB1314597A (en) * 1970-08-03 1973-04-26 Mitsubishi Electric Corp Lightning arrester
DE2619317A1 (de) * 1976-04-30 1977-11-03 Mitsubishi Electric Corp Blitzschutzvorrichtung
DE3004737A1 (de) * 1979-02-09 1980-08-14 Hitachi Ltd Gekapselter zinkoxid-ueberspannungsableiter
DE3411735A1 (de) * 1984-03-30 1985-10-03 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Ueberspannungsableiter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469146A (en) * 1967-09-08 1969-09-23 Westinghouse Electric Corp Submersible lightning arrester for cable circuits
GB1314597A (en) * 1970-08-03 1973-04-26 Mitsubishi Electric Corp Lightning arrester
DE2619317A1 (de) * 1976-04-30 1977-11-03 Mitsubishi Electric Corp Blitzschutzvorrichtung
DE3004737A1 (de) * 1979-02-09 1980-08-14 Hitachi Ltd Gekapselter zinkoxid-ueberspannungsableiter
DE3411735A1 (de) * 1984-03-30 1985-10-03 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Ueberspannungsableiter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007027411A1 (de) * 2007-06-11 2008-12-18 Siemens Ag Überspannungsableiteranordnung

Also Published As

Publication number Publication date
DE8531511U1 (de) 1986-01-02

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19881108

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Inventor name: BRILL, MANFRED, DIPL.-ING.

Inventor name: KIRCH, JOHANNES