Adhesive bonding and miscellaneous chemical manufacture – Methods – Making electrical conductors of indefinite length
Patent
1975-01-23
1976-01-27
Drummond, Douglas J.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Making electrical conductors of indefinite length
174110AR, 174120SC, 427118, 427120, 427388, H01B 902
Patent
active
039350428
ABSTRACT:
A method of manufacturing high voltage carrying electric power cable having a conductor insulated with a multilayered covering, and the cable product thereof. The cable construction includes a primary or dielectric insulating body of thermoset ethylene-propylene rubber and a thermoset jacket about the conductor, which is substantially free of corona-prone or ionization-prone voids and separations intermediate the layers. The method comprises forming and curing the ethylene-propylene rubber compound constituting the body of the primary or dielectric insulation around the conductor and then heat treating the thermoset-cured ethylene-propylene rubber insulation prior to applying subsequent components of the multilayered covering about the condutor, including an overlying semiconductive shielding layer and a protective enclosing jacket of heat-cured thermoset polymer. The semiconductive shielding layer overlying the body or primary of dielectric insulation around the conductor, comprises a combination of a highly vapor-permeable coating of semiconductive material adhered to the surface of the underlying body of insulation and a contiguous layer of semiconductive material superimposed over the coating adhered to the insulation.
REFERENCES:
patent: 3259688 (1966-07-01), Towne et al.
patent: 3433891 (1969-03-01), Zysk
patent: 3472692 (1969-10-01), Isshiki
patent: 3479446 (1969-11-01), Arnaudin
patent: 3541228 (1970-11-01), Lombardi
patent: 3748369 (1973-07-01), Durakis et al.
Drummond Douglas J.
General Electric Company
Nauhauser Frank L.
Schlamp Philip L.
Simkins Raymond G.
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