EP0141303B1 - Stufentransformator mit einem Isolierstoffzylinder für einen Stufenschalter - Google Patents

Stufentransformator mit einem Isolierstoffzylinder für einen Stufenschalter Download PDF

Info

Publication number
EP0141303B1
EP0141303B1 EP84112064A EP84112064A EP0141303B1 EP 0141303 B1 EP0141303 B1 EP 0141303B1 EP 84112064 A EP84112064 A EP 84112064A EP 84112064 A EP84112064 A EP 84112064A EP 0141303 B1 EP0141303 B1 EP 0141303B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
insulating material
wound
fibres
insulating
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
EP84112064A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0141303A2 (de
EP0141303A3 (en
Inventor
Alexander Bleibtreu
Dieter Dr.-Ing. Dohnal
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.)
Maschinenfabrik Reinhausen GmbH
Original Assignee
Maschinenfabrik Reinhausen GmbH
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 Maschinenfabrik Reinhausen GmbH filed Critical Maschinenfabrik Reinhausen GmbH
Priority to AT84112064T priority Critical patent/ATE62352T1/de
Publication of EP0141303A2 publication Critical patent/EP0141303A2/de
Publication of EP0141303A3 publication Critical patent/EP0141303A3/de
Application granted granted Critical
Publication of EP0141303B1 publication Critical patent/EP0141303B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H01B17/56—Insulating bodies
    • H01B17/60—Composite insulating bodies
    • 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
    • H01B17/32—Single insulators consisting of two or more dissimilar insulating bodies

Definitions

  • the invention relates to a step transformer according to the preamble of the claim.
  • tap changers of tap transformers are provided with insulating cylinders which form a supporting structure for the fixed tap contacts.
  • the object of the invention is therefore the above To improve the insulating cylinder so that the cylinder wall, in addition to sufficient mechanical strength, above all has high dielectric strength for as many directions as possible. This object is achieved by the means specified in the characterizing part of the claim.
  • the invention is based on the fact that the wall of an insulating cylinder made of epoxy resin with a wound reinforcement made of glass fibers, which has hardened under vacuum, cannot be regarded as a homogeneous insulating material. With such a material, the dielectric strength must be considered depending on the direction of the stress. Two directions of stress are to be considered, namely the stress in the fiber direction and the stress transverse to the fiber direction. The stress in the fiber direction will always result in less favorable values than a stress in the cross-grain direction. The reason for this is to be seen in the fact that individual threads are sometimes not properly wetted by the resin and this can lead to directional breakdown channels along the threads between two points of different potential.
  • the wound reinforcement is now made exclusively from a multi-layer wound fiberglass mat, which consists of non-directional fibers, the length of which is less than the smallest distance between two adjacent fixed step contacts of different potential, direct channel formation between metal parts can no longer occur different potential come. It is important that this applies to all directions due to the undirected short fibers. For an occasionally irregular arrangement of contacts with different potentials in the cylinder wall, it is therefore no longer necessary to take particular account of whether the dielectric stress occurs transversely to the fiber or along the fiber. The advantage achieved with the invention is therefore to be seen in the fact that overall the dielectric strength of the cylinder wall is improved for any direction. In other words, when arranging contacts in the cylinder wall, the fiber course of the reinforcement no longer needs to be given special consideration.

Landscapes

  • Insulating Of Coils (AREA)
  • Insulating Bodies (AREA)
  • Laminated Bodies (AREA)
  • Inorganic Insulating Materials (AREA)
  • Glass Compositions (AREA)
EP84112064A 1983-10-19 1984-10-09 Stufentransformator mit einem Isolierstoffzylinder für einen Stufenschalter Expired - Lifetime EP0141303B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84112064T ATE62352T1 (de) 1983-10-19 1984-10-09 Stufentransformator mit einem isolierstoffzylinder fuer einen stufenschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833337954 DE3337954A1 (de) 1983-10-19 1983-10-19 Isolierstoffzylinder fuer hohe dielektrische beanspruchungen
DE3337954 1983-10-19

Publications (3)

Publication Number Publication Date
EP0141303A2 EP0141303A2 (de) 1985-05-15
EP0141303A3 EP0141303A3 (en) 1988-03-02
EP0141303B1 true EP0141303B1 (de) 1991-04-03

Family

ID=6212199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112064A Expired - Lifetime EP0141303B1 (de) 1983-10-19 1984-10-09 Stufentransformator mit einem Isolierstoffzylinder für einen Stufenschalter

Country Status (4)

Country Link
EP (1) EP0141303B1 (enrdf_load_stackoverflow)
JP (1) JPS60101817A (enrdf_load_stackoverflow)
AT (1) ATE62352T1 (enrdf_load_stackoverflow)
DE (1) DE3337954A1 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537142A1 (de) * 1985-10-18 1987-04-23 Reinhausen Maschf Scheubeck Im filament-winding-verfahren hergestelltes isolierstoffrohr
DE3630295A1 (de) * 1986-09-05 1988-03-17 Reinhausen Maschf Scheubeck Verfahren zur herstellung eines isolierstoffzylinders fuer hohe dielektrische beanspruchungen
DE19610113C2 (de) * 1996-03-14 1998-01-22 Reinhausen Maschf Scheubeck Verfahren zur Herstellung eines faserverstärkten Isolierkörpers
JP4913392B2 (ja) * 2005-12-02 2012-04-11 ルネサスエレクトロニクス株式会社 アッテネータ

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1665556A1 (de) * 1966-02-18 1971-02-11 Siemens Ag Giessharzisolator und Verfahren zu seiner Herstellung
US3979709A (en) * 1975-05-22 1976-09-07 The Chase-Shawmut Company Electric fuse having a multiply casing of a synthetic - resin glass-cloth laminate
DE2845463C3 (de) * 1978-10-19 1982-02-25 Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg Lastwähler für Stufentransformatoren

Also Published As

Publication number Publication date
ATE62352T1 (de) 1991-04-15
JPH0560202B2 (enrdf_load_stackoverflow) 1993-09-01
JPS60101817A (ja) 1985-06-05
DE3337954A1 (de) 1985-05-02
DE3337954C2 (enrdf_load_stackoverflow) 1993-02-25
EP0141303A2 (de) 1985-05-15
EP0141303A3 (en) 1988-03-02

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