Title:
DC OIL IMMERSED POWER CABLE
Document Type and Number:
Japanese Patent JP3693781
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent the formation of deoiled voids in an oil-immersed insulator due to heat cycle and quickly immerse a cable in an insulating oil during cable manufacture, when the oil-immersed insulator is formed by winding of insulating paper on a conductor and then by immersion of the same in a high-viscosity insulating oil.
SOLUTION: A thixotropic high-viscosity insulating oil whose kinetic viscosity is 5,000 to 40,000cSt at 40°C and 200 to 10,000cSt at 100°C is used. The high viscosity insulating oil is obtained by dissolving 0.5-5wt.% polyisobutylene rubber in a base oil, the average molecular weight of the polyisobutylene rubber being 500,000 to 3,000,000.
Inventors:
Koichi Iinuma
Takahashi
Hiroyuki Miyata
Takahashi
Hiroyuki Miyata
Application Number:
JP5077697A
Publication Date:
September 07, 2005
Filing Date:
March 05, 1997
Export Citation:
Assignee:
Fujikura Ltd.
International Classes:
H01B3/28; H01B3/20; H01B9/00; H01B9/06; (IPC1-7): H01B3/20; H01B9/00
Domestic Patent References:
| JP10208550A | ||||
| JP2000517094A | ||||
| JP10228820A | ||||
| JP10255562A |
Attorney, Agent or Firm:
Masatake Shiga
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