Title:
DIRECT CURRENT POWER CABLE
Document Type and Number:
Japanese Patent JP3773569
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a direct current power cable which is excellent in not only direct current breakdown characteristics but also insulation breakdown characteristics when an impulse is applied, polarity is reversed, and a direct current polarity reversed impulse is superimposed, in the case of a direct current power cable having a polyolefin insulator layer.
SOLUTION: The present invention relates to a direct current power cable having a polyolefin insulator layer provided in the outside of a conductor. The insulator layer has an ethylene copolymer having, as its copolymeric components, at least one kind of polar group containing monomers containing a carbonyl group, a nitrile group, and a nitro group and a dibasic acid anhydride, or, a resin component comprising a mixture of an ethylene copolymer with another polyolefin resin. The layer comprizes a cross-linked polymer of a resin composition wherein an organic oxide and a thiocarboxylic acid ester antioxidant are mixed thereinto, as essential component. There is provided with a direct current power cable which is excellent in insulation breakdown characteristics when an impulse is applied, polarity is reversed and a direct current polarity reversed impulse is superimposed.
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Inventors:
Hiroyuki Nomura
Toshiya Tanaka
Toshiya Tanaka
Application Number:
JP29561595A
Publication Date:
May 10, 2006
Filing Date:
November 14, 1995
Export Citation:
Assignee:
THE FURUKAW ELECTRIC CO.,LTD.
International Classes:
H01B3/44; H01B9/00; (IPC1-7): H01B9/00; H01B3/44
Domestic Patent References:
| JP5298927A | ||||
| JP6116234A | ||||
| JP5298928A | ||||
| JP55154007A | ||||
| JP60041712A |
Attorney, Agent or Firm:
Takehiko Suzue