AT41532B - Electrical cable with layers of different types of insulation material. - Google Patents
Electrical cable with layers of different types of insulation material.Info
- Publication number
- AT41532B AT41532B AT41532DA AT41532B AT 41532 B AT41532 B AT 41532B AT 41532D A AT41532D A AT 41532DA AT 41532 B AT41532 B AT 41532B
- Authority
- AT
- Austria
- Prior art keywords
- layers
- different types
- insulation material
- electrical cable
- insulating
- Prior art date
Links
- 239000012774 insulation material Substances 0.000 title claims description 3
- 239000000126 substance Substances 0.000 claims description 4
- 239000011088 parchment paper Substances 0.000 claims description 3
- 235000013311 vegetables Nutrition 0.000 claims description 2
- 230000009931 harmful effect Effects 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Landscapes
- Organic Insulating Materials (AREA)
Description
<Desc/Clms Page number 1>
Elektrisches Kabel mit Schichten verschiedenartigen Isoliermaterials.
Elektrische Kabel werden häufig aus bestimmten Gründen mit mehreren Schichten verschiedenartigen Isoliermaterials hergestellt. Beispielsweise besitzen eine Art dieser liabel mehrere Isolierhüllen, die aus verschiedenen Stoffen bestehen, deren Dielektrizitätskonstante und Dicke so gewählt ist, dass die dielektrische Kraftäusserung, d. h. die Spannung, bezogen auf die Dickeneinheit der Isoliermasse, in jeder Schichte annähernd dieselbe ist, zum Zwecke, unter gleichmässiger Beanspruchung der einzelnen Isolierschichten, letztere hinsichtlich ihrer Isolierkraft möglichst vollkommen auszunützen. Zur Herstellung der einzelnen Isolierschichten werden dann verschiedene Isolierkörper, sowie verschiedene Sorten Öle und dgl. von ganz bestimmter Qualität und Eigenschaft verwendet.
Es hat sich nun gezeigt. dass die Bestandteile der einzelnen Schichten ungünstige Wechselwirkungen aufeinander aus- üben, und durch die schliessliche Homogenisierung aller Schichten der Isoliermasse, der bei der Herstellung der Kabel angestrebte Effekt verloren geht.
Durch den Gegenstand vorliegender Erfindung soll der erwähnte Nachteil vermieden werden, indem die einzelnen Isolierschichten durch Pergamentpapierlagen oder andere zweckentsprechende Zwischenlagen von undurchlässigen, vegetabilischen Stoffen getrennt werden.
Die Abbildung zeigt eine beispielsweise Ausführungsform eines solchen Kabels im Querschnitt. Den Leiter a umgibt eine mit bestimmten elektrischen Eigenschaften her- gestell te Isolierschichto b, welche von der eine andere Zusammensetzung und andere elektrische Eigenschaften aufweisenden Isolierschichte d durch die Pergamentpapierlage c getrennt ist.
Unwesentlich und nicht beschränkt ist die Anzahl der Isolierschichten. Es ist nicht erforderlich, dass alle Isolierschichten aus ölgetränkten Stoffen bestehen. Ebenso kann das Kabel in bekannter Weise in einen oder mehrere Bleimäntel e eingeschlossen und armiert sein.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Electrical cable with layers of different types of insulation material.
Electrical cables are often made with multiple layers of different types of insulation for certain reasons. For example, one type of these liabel have several insulating sheaths, which consist of different materials, the dielectric constant and thickness of which is chosen so that the dielectric force expression, i.e. H. the voltage, based on the unit of thickness of the insulating compound, is approximately the same in each layer, for the purpose of utilizing the latter as fully as possible with regard to its insulating power, while the individual insulating layers are uniformly stressed. To produce the individual insulating layers, different insulating bodies, as well as different types of oils and the like, of a very specific quality and property are used.
It has now been shown. that the constituents of the individual layers exert unfavorable interactions with one another, and due to the eventual homogenization of all layers of the insulating compound, the effect aimed for in the manufacture of the cables is lost.
The object of the present invention is intended to avoid the aforementioned disadvantage in that the individual insulating layers are separated from impermeable, vegetable substances by layers of parchment paper or other appropriate intermediate layers.
The figure shows an exemplary embodiment of such a cable in cross section. The conductor a is surrounded by an insulating layer b produced with specific electrical properties, which is separated from the insulating layer d, which has a different composition and other electrical properties, by the parchment paper layer c.
The number of insulating layers is insignificant and not restricted. It is not necessary that all insulating layers consist of oil-soaked substances. The cable can also be enclosed and armored in one or more lead sheaths in a known manner.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT41532T | 1908-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT41532B true AT41532B (en) | 1910-03-25 |
Family
ID=3560347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT41532D AT41532B (en) | 1908-05-29 | 1908-05-29 | Electrical cable with layers of different types of insulation material. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT41532B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE950655C (en) * | 1937-09-02 | 1956-10-11 | Siemens Ag | Plastic cable jacket |
| DE959118C (en) * | 1937-11-11 | 1957-02-28 | Kabelwerk Wagner K G | Fiber-free electrical cable with rubber insulation, which is covered with a cellulose derivative layer |
| US2854500A (en) * | 1958-09-30 | High tension pressure cable |
-
1908
- 1908-05-29 AT AT41532D patent/AT41532B/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2854500A (en) * | 1958-09-30 | High tension pressure cable | ||
| DE950655C (en) * | 1937-09-02 | 1956-10-11 | Siemens Ag | Plastic cable jacket |
| DE959118C (en) * | 1937-11-11 | 1957-02-28 | Kabelwerk Wagner K G | Fiber-free electrical cable with rubber insulation, which is covered with a cellulose derivative layer |
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