GB857548A - Improvements in or relating to direct-current high voltage cables - Google Patents
Improvements in or relating to direct-current high voltage cablesInfo
- Publication number
- GB857548A GB857548A GB28921/57A GB2892157A GB857548A GB 857548 A GB857548 A GB 857548A GB 28921/57 A GB28921/57 A GB 28921/57A GB 2892157 A GB2892157 A GB 2892157A GB 857548 A GB857548 A GB 857548A
- Authority
- GB
- United Kingdom
- Prior art keywords
- insulation
- water
- high voltage
- sept
- enclosed
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
- Organic Insulating Materials (AREA)
Abstract
857,548. Cables. SIEMENS-SCHUCKERTWERKE A.G. Sept. 13, 1957 [Sept. 14, 1956], No. 28921/57. Class 36 A high voltage D.C. cable comprises coaxial negative and positive cores 1 and 3 separated by insulation 2 which is sensitive to water, the positive core being surrounded by insulation 4 which is very much less sensitive to water and is substantially waterimpermeable, the whole being enclosed in a non-metallic protective sheath 5 of greater mechanical strength than the insulation 4 but not completely water impermeable. The insulation 2 may comprise p.v.c. or an impregnated fibrous material such as paper, and the insulation 4 may be polythene. The sheathing 5 may be of a vinyl chloride polymer or may be a mixture having a high degree of water impermeability and based on polyisobutylene or butyl rubber having a high carbon black content and may be enclosed in an additional sheath 6 of mechanically stronger material, e.g. p.v.c. An oil retaining layer of metal or plastic foil 7 may be applied over the insulation 2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE857548X | 1956-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB857548A true GB857548A (en) | 1960-12-29 |
Family
ID=6789603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28921/57A Expired GB857548A (en) | 1956-09-14 | 1957-09-13 | Improvements in or relating to direct-current high voltage cables |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB857548A (en) |
-
1957
- 1957-09-13 GB GB28921/57A patent/GB857548A/en not_active Expired
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