GB832312A - Improvements in the electrical insulation of electric cables - Google Patents
Improvements in the electrical insulation of electric cablesInfo
- Publication number
- GB832312A GB832312A GB8912/58A GB891258A GB832312A GB 832312 A GB832312 A GB 832312A GB 8912/58 A GB8912/58 A GB 8912/58A GB 891258 A GB891258 A GB 891258A GB 832312 A GB832312 A GB 832312A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- cable
- chamber
- pipe
- pump
- 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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
Landscapes
- Manufacturing Of Electric Cables (AREA)
Abstract
832,312. Cables. ALLMANNA SVENSKA ELEKTRISKA A.B. March 20, 1958 [Sept. 10, 1957], No. 8912/58. Class 36. Oil in a cable 1 is circulated by a pump 4 through a return pipe 5 which leads to a throttling device 7 and an expansion chamber 6. As the oil expands into the chamber 6 it becomes freed from gases absorbed from the insulation during its passage through the cable. A pump 8 maintains a vacuum in the chamber 6. The device 7 may consist of a number of nozzles from which the oil is sprayed into the chamber 6. A cooling arrangement 9 and a filter 10 may be included in the pipe 5. Fig. 5 shows an arrangement for a vertical cable 1 having electric connections at 20 and a pump 4 and return pipe 5 for oil that has been freed from gases in the vacuum chamber 6. Chamber 6 may be provided with a pressure indicator relay 17 serving as an oil control. The pipe 5 is separated from the cable conductors by isolators 11. The oil may be regenerated in the tank 6 or in a separate vessel in the pipe 5 by filtering through fuller's earth, or by contact with lime when the cable insulation consists of chlorinated diphenyl. Fig. 6 shows a cable in which a central channel 12 is formed by the conductors 13, and channels 14 are provided under the lead sheath 15 so that the oil can flow in a radial direction through the insulation which may consist of paper.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE832312X | 1957-09-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB832312A true GB832312A (en) | 1960-04-06 |
Family
ID=20353965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8912/58A Expired GB832312A (en) | 1957-09-10 | 1958-03-20 | Improvements in the electrical insulation of electric cables |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB832312A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3363046A (en) * | 1964-09-24 | 1968-01-09 | British Insulated Callenders | Electric cable installations |
US3485930A (en) * | 1966-12-16 | 1969-12-23 | Pirelli | Cooling of oil-filled electrical power cables |
US3989884A (en) * | 1974-08-02 | 1976-11-02 | Felten & Guilleaume Carlswerk Ag | Internally cooled high-energy cable and a method of manufacturing same |
US4043031A (en) * | 1974-08-02 | 1977-08-23 | Felten & Guilleaume Carlswerk Ag | Method of manufacturing internally cooled high-energy cable |
-
1958
- 1958-03-20 GB GB8912/58A patent/GB832312A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3363046A (en) * | 1964-09-24 | 1968-01-09 | British Insulated Callenders | Electric cable installations |
US3485930A (en) * | 1966-12-16 | 1969-12-23 | Pirelli | Cooling of oil-filled electrical power cables |
US3989884A (en) * | 1974-08-02 | 1976-11-02 | Felten & Guilleaume Carlswerk Ag | Internally cooled high-energy cable and a method of manufacturing same |
US4043031A (en) * | 1974-08-02 | 1977-08-23 | Felten & Guilleaume Carlswerk Ag | Method of manufacturing internally cooled high-energy cable |
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