Multi-conductor high voltage cable, in particular three-conducto

Details Multi-conductor high voltage cable, in particular three-conducto Multi-conductor high voltage cable, in particular three-conducto

1988-03-22

1989-09-26

Nimmo, Morris H.

Electricity: conductors and insulators

Conduits, cables or conductors

Conductive armor or sheath

174 23R, 174106R, 174107, 174113R, H01B 718

Patent

active

048702269

ABSTRACT:
Multi-conductor high voltage cable, in particular a three-conductor cable, each conductor having an extruded polyolefin conductor insulation, said cable further comprising an extruded polyolefin belt insulation surrounding all insulated conductors and an electrically conducting sheath, surrounding the belt insulation. According to the present invention the conductor insulation of each conductor is surrounded by at least one tape or layer of material comprising cells or cavities and/or at least one tape or layer of material comprising cells or cavities is applied between the belt insulation and all insulated conductors. Preferably said tape or layer is formed by swelling tape.

REFERENCES:
patent: 2408416 (1946-10-01), Edgar et al.
patent: 3413408 (1968-11-01), Robinson
patent: 3509269 (1970-04-01), Elliott
patent: 3742363 (1973-06-01), Carle
patent: 3790694 (1974-02-01), Portinari
patent: 4658089 (1987-04-01), Guzy et al.
patent: 4665281 (1987-05-01), Kamis
patent: 4703132 (1987-10-01), Marciano-Agostindli et al.

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