发明名称 |
High voltage direct current cable with impregnated tape insulation |
摘要 |
A direct current, electric, submarine cable which may be used in long lengths and at great depths and which has improved voltage breakdown characteristics with respect to voids which form in the insulation. The cable has a conductor surrounded by an inner semi-conductive screen which is surrounded by cellulose paper tape insulation which is surrounded by an outer semi-conductive screen which is surrounded by a metal sheath. The paper tape is impregnated with a compound comprising a viscous hydrocarbon oil containing a substance having polar groups, the amount of the substance being sufficient to make the volume resistivity of the compound 100 times lower than the volume resistivity of the tape with the compound therein.
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申请公布号 |
US4417093(A) |
申请公布日期 |
1983.11.22 |
申请号 |
US19810327353 |
申请日期 |
1981.12.04 |
申请人 |
SOCIETA CAVI PIRELLI S.P.A. |
发明人 |
OCCHINI, ELIO;LANFRANCONI, GIANMARIO;METRA, PIERO |
分类号 |
H01B3/20;H01B3/52;H01B9/00;H01B9/06;H01B17/60;(IPC1-7):H01B7/14;H01B9/02 |
主分类号 |
H01B3/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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