Abstract @ A cross-linked polyethylene cable produced by extrusion coating a polyethylene composition 2 on a conductor 1, the polyethylene composition comprising polyethylene, more than 10% to less than 30% by weight of an ethylene-vinyl acetate copolymer having a VA content of more than 25% to less than 35% by weight and an organic peroxide and thereafter cross-linking the thus coated polyethylene composition. Such a cable shows greatly improved resistance to degradation under continuously applied voltages at high temperature for extended periods of time. Thus, the cable has a long service life even when used under conditions of high temperature for extended period of time.
Inventors
👤 Shosuke Osaka Works Of Sumitomo Yamanouchi
👤 Sadao Osaka Works Of Sumitomo Electric Fukunaga
👤 Hironaga Osaka Works Of Sumitomo Elec. Matsubara
A cross-linked polyethylene insulated cable which is prepared by extrusion coating a polyethylene composition on a conductor, the polyethylene composition comprising polyethylene, more than 10% to less than 30% by weight of an ethylene-vinyl acetate copolymer having a VA content of more than 25% to less than 35% by weight, an organic peroxide and others, and thereafter cross-linking the thus coated polyethylene composition.
Claim 2
Dependent Claim
63 words
A cross-linked polyethylene insulated cable which is prepared by extrusion coating a polyethylene composition on a conductor, the polyethylene composition comprising polyethylene, more than 10% to less than 30% by weight of an ethylene-vinyl acetate copolymer having a VA content of more than 25% to less than 35% by weight, an organic peroxide and others, and thereafter cross-linking the thus coated polyethylene composition.
Claim 3
Dependent Claim
26 words
The cross-linked polyethylene insulated cable as claimed in Claim 1, wherein the VA content of the ethylene-vinyl acetate copolymer is from 28 to 33% by weight.
Claim 4
Dependent Claim
22 words
The c=oss-linked polyethylene cable as claimed in Claim 2, wherein the VA content of the ethylene-vinyl acetate copolymer is 30% by weight.
Claim 5
Dependent Claim
27 words
The cross-linked polyethylene cable as claimed in Claim 3, wherein the amount of the ethylene-vinyl acetate copolymer compounded is about 20% by weight based on the composition.
Claim 6
Dependent Claim
15 words
A cross-linked polyethylene cable substantially as hereinbefore described with reference to the accompanying drawing .
Claim 7
Dependent Claim
15 words
A cross-linked polyethylene cable substantially as hereinbefore described with reference to the accompanying drawing .