Electricity: conductors and insulators – Conduits – cables or conductors – Insulated
Patent
1987-10-16
1989-01-31
Nimmo, Morris H.
Electricity: conductors and insulators
Conduits, cables or conductors
Insulated
156 51, 174105SC, 264174, 264236, H01B 902, H01B 1300
Patent
active
048017663
ABSTRACT:
A crosslinked polyolefin insulated power cable with remarkably improved AC breakdown voltage and impulse withstand voltage has been obtained by a process which comprises extrusion-coating, on the outer surface of a conductor, (1) a material for the formation of an inner semiconductive layer, comprising a base polymer and N-vinylcarbazole, (2) a crosslinkable polyolefin material for the formation of a crosslinked polyolefin insulating layer and (3) a material for the formation of an outer semiconductive layer in this order and then subjecting the coated conductor to a crosslinking treatment to form, on the outer surface of the conductor, an inner semiconductive layer, a crosslinked polyolefin insulating layer and an outer semiconductive layer in this order.
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Aida Fumio
Hanai Misao
Shinono Takeo
Tassavori Shahrzad
Nimmo Morris H.
Showa Electric Wire & Cable Co. Ltd.
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