EP0141303B1 - Transformateur a plots avec un cylindre en matière isolante pour un graduateur de réglage de charge - Google Patents
Transformateur a plots avec un cylindre en matière isolante pour un graduateur de réglage de charge Download PDFInfo
- 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
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)
Claims (1)
- Transformateur à plots avec un cylindre en matière isolante pour un commutateur à plots ou à prises, dans lequel une pluralité de contacts à plots fixes traversent la paroi du cylindre en matière isolante jouant le rôle de construction porteuse, et dans lequel, en outre, le cylindre en matière isolante est constitué par un système de résine susceptible d'être durcie sous vide avec une armature bobinée en fibres de verre, transformateur à plots dans lequel l'armature bobinée est exclusivement constituée d'une natte de fibres de verre enroulée en plusieurs couches, et qui est constituée de fibres non orientées dont la longueur est plus réduite que la distance la plus réduite entre deux contacts à plots fixes voisins de potentiels différents.
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 (fr) | 1985-05-15 |
EP0141303A3 EP0141303A3 (en) | 1988-03-02 |
EP0141303B1 true EP0141303B1 (fr) | 1991-04-03 |
Family
ID=6212199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84112064A Expired - Lifetime EP0141303B1 (fr) | 1983-10-19 | 1984-10-09 | Transformateur a plots avec un cylindre en matière isolante pour un graduateur de réglage de charge |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0141303B1 (fr) |
JP (1) | JPS60101817A (fr) |
AT (1) | ATE62352T1 (fr) |
DE (1) | DE3337954A1 (fr) |
Families Citing this family (4)
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)
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 |
-
1983
- 1983-10-19 DE DE19833337954 patent/DE3337954A1/de active Granted
-
1984
- 1984-10-09 AT AT84112064T patent/ATE62352T1/de not_active IP Right Cessation
- 1984-10-09 EP EP84112064A patent/EP0141303B1/fr not_active Expired - Lifetime
- 1984-10-18 JP JP59217475A patent/JPS60101817A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0560202B2 (fr) | 1993-09-01 |
ATE62352T1 (de) | 1991-04-15 |
DE3337954A1 (de) | 1985-05-02 |
JPS60101817A (ja) | 1985-06-05 |
EP0141303A2 (fr) | 1985-05-15 |
DE3337954C2 (fr) | 1993-02-25 |
EP0141303A3 (en) | 1988-03-02 |
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