GB354667A - Improvements relating to underground electric cables - Google Patents
Improvements relating to underground electric cablesInfo
- Publication number
- GB354667A GB354667A GB3809430A GB3809430A GB354667A GB 354667 A GB354667 A GB 354667A GB 3809430 A GB3809430 A GB 3809430A GB 3809430 A GB3809430 A GB 3809430A GB 354667 A GB354667 A GB 354667A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layers
- bitumen
- layer
- underground electric
- covered
- 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
- H01B7/2806—Protection against damage caused by corrosion
Landscapes
- Cable Accessories (AREA)
- Insulated Conductors (AREA)
Abstract
354,667. Cables. CEAT CONDUTTORI ELETTRICI ED AFFINI-TORINO, BARBERIS, M., and BAGGI, V., 1, Corso Palermo, Turin. Dec. 17, 1930, No. 38094. [Class 36.] In order to avoid corrosion, the lead sheath of an underground electric cable is covered with a protective coating of bituminous material which is applied in two layers. A thin layer is applied at a temperature between 80‹ C. and 110‹ C., and a second layer at between 70‹ C. and 80‹ C. The second layer is of harder bitumen and is thicker than the first. A ribbon of non-vulcanized rubber containing sulphur is wound spirally with overlapping edges on the bitumen and is covered with impregnated paper tape layers, preferably wound in the same direction as the rubber ribbon. Layers of bitumen alternate with the paper tape layers, and armouring may complete the cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3809430A GB354667A (en) | 1930-12-17 | 1930-12-17 | Improvements relating to underground electric cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3809430A GB354667A (en) | 1930-12-17 | 1930-12-17 | Improvements relating to underground electric cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB354667A true GB354667A (en) | 1931-08-13 |
Family
ID=10401135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3809430A Expired GB354667A (en) | 1930-12-17 | 1930-12-17 | Improvements relating to underground electric cables |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB354667A (en) |
-
1930
- 1930-12-17 GB GB3809430A patent/GB354667A/en not_active Expired
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