Method of making extruded solid dielectric high voltage cable re

Details Method of making extruded solid dielectric high voltage cable re Method of making extruded solid dielectric high voltage cable re

1977-04-06

1978-12-19

Goolkasian, John T.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Making electrical conductors of indefinite length

156 47, 427118, 264174, H01B 1306

Patent

active

041304500

ABSTRACT:
High-voltage power cables with extruded dielectric plastic insulation, installed underground, have their life shortened by the formation of electrochemical trees in the insulation. This invention provides a high-voltage power transmission cable constructed with sealant in interstices of a stranded conductor that are not filled by the semi-conducting material of a conductor shield of the cable. The construction prevents or greatly delays the formation of electrochemical trees in the insulation of the cable. The sealant prevents entrance of air into the cable at cable ends, and the passage of the humidity of the air through the conductor shield to an interface between the conductor shield and the inside surface of insulation that surrounds the conductor shield.

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