GB675224A - Improvements in electric cables - Google Patents
Improvements in electric cablesInfo
- Publication number
- GB675224A GB675224A GB26332/49A GB2633249A GB675224A GB 675224 A GB675224 A GB 675224A GB 26332/49 A GB26332/49 A GB 26332/49A GB 2633249 A GB2633249 A GB 2633249A GB 675224 A GB675224 A GB 675224A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dielectric
- lead sheath
- paper
- mils
- impregnated
- 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
- H01B9/00—Power cables
- H01B9/06—Gas-pressure cables; Oil-pressure cables; Cables for use in conduits under fluid pressure
- H01B9/0644—Features relating to the dielectric of gas-pressure cables
- H01B9/0655—Helically wrapped insulation
-
- 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
- H01B7/02—Disposition of insulation
-
- 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
- H01B7/02—Disposition of insulation
- H01B7/0241—Disposition of insulation comprising one or more helical wrapped layers of insulation
Landscapes
- Insulated Conductors (AREA)
Abstract
675,224. Gas-filled cables. GLOVER & CO., Ltd., W. T. Oct. 12, 1950 [Oct. 13, 1949], No. 26332/49. Addition to 625,512. Class 36. A super-tension electric cable is provided with a lapped dielectric consisting of an inner part 3 built up of not less than fourteen alternate single strip layers of orientated polystyrene film and pre-impregnated paper, and an outer part 4 of pre-impregnated paper, the interstices of both parts being filled with gas under super-atmospheric pressure under operating conditions, and the inner part 3 having a wall thickness lying within a range whose lower limit is equal to 10 per cent of the radius of the conductor surface and whose upper limit amounts to 45 per cent of the wall thickness of the whole dielectric. The polystyrene film is about 4 mils. thick and the interleaving paper about 2.5 mils. The cable preferably comprises a conductor 1, a metallized paper screen 2, dielectric 3, 4, a copper tape screen 5, lead sheath 6, metal re-inforcing tapes 7, 8, 9, an outer lead sheath 10 and a protective covering of bitumen-impregnated jute or the like 11. Under operating conditions the cable core within the lead sheath 6 contains nitrogen under a pressure of fourteen atmospheres.
Priority Applications (17)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE498509D BE498509A (en) | 1947-08-05 | ||
BE498508D BE498508A (en) | 1947-08-05 | ||
BE484104D BE484104A (en) | 1947-08-05 | ||
NL77748D NL77748C (en) | 1947-08-05 | ||
NL696904373A NL141712B (en) | 1947-08-05 | METHOD OF MANUFACTURING AN ELECTROLUMINESCENT ELEMENT, AS WELL AS THE MANUFACTURED ELEMENT. | |
GB21213/47A GB625512A (en) | 1947-08-05 | 1947-08-05 | Improvements in electric cables |
CH270121D CH270121A (en) | 1947-08-05 | 1948-07-09 | High voltage cables. |
FR969538D FR969538A (en) | 1947-08-05 | 1948-07-24 | Improvements to electric cables |
CH288079D CH288079A (en) | 1947-08-05 | 1950-09-22 | High voltage cables. |
FR60497D FR60497E (en) | 1947-08-05 | 1950-09-26 | Improvements to electric cables |
US187040A US2650261A (en) | 1947-08-05 | 1950-09-27 | Gas-filled electric cable with paper and polystyrene insulation |
FR61032D FR61032E (en) | 1947-08-05 | 1950-09-27 | Improvements to electric cables |
DEG3889A DE914507C (en) | 1947-08-05 | 1950-09-29 | High-voltage cable with a conductor and an overlapping dielectric |
DEG8698A DE924390C (en) | 1947-08-05 | 1950-10-26 | High voltage cables |
GB28071/56A GB817616A (en) | 1947-08-05 | 1956-09-13 | Improvements in electric cables |
DEG22860A DE1063667B (en) | 1947-08-05 | 1957-09-03 | High-voltage cable with a conductor and a dielectric that is rolled up over it |
FR72319D FR72319E (en) | 1947-08-05 | 1957-09-12 | Improvements to electric cables |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB270121X | 1947-08-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB675224A true GB675224A (en) | 1952-07-09 |
Family
ID=10252738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26332/49A Expired GB675224A (en) | 1947-08-05 | 1949-10-13 | Improvements in electric cables |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB675224A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2153132A (en) * | 1984-01-17 | 1985-08-14 | Pirelli Cavi Spa | Oil-filled cable |
-
1949
- 1949-10-13 GB GB26332/49A patent/GB675224A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2153132A (en) * | 1984-01-17 | 1985-08-14 | Pirelli Cavi Spa | Oil-filled cable |
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