Power cable joint structure having sheath isolation member containing electrode spheres
AssigneeThe Fujikura Cable Works, Ltd.
InventorsMichio Takaoka, Motoyuki Ono, Isao Kaji
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Abstract
A power cable joint structure in which a sheath isolation is provided in a cable shielding layer in, for instance, each phase of a three-phase circuit. A reinforcing insulation is covered on the connected cable conductors and a shielding layer is covered on the outer periphery of the above-mentioned joint itself. The shielding layer has a pair of mutually opposite layers with a gap therebetween which provides a sheath isolation. A thick sheet-like insulator 12 with a plurality of spherical electrodes distributed therein is contained in the sheath isolation.
Claims10
A power cable joint structure comprising:
- first insulated cable conductor having one end with an exposed conductor;
- second insulated cable conductor having one end with an exposed conductor;
- connecting means for connecting said exposed conductors of said first and second insulated cable conductors, whereby said first insulated cable conductor and said second insulated cable conductor are rendered electrically conductive with respect to each other and a joint is formed;
- cable shielding layer means covering said joint and portions of said first and second insulated cable conductors, and having a pair of electrodes located opposite to each other defining a gap therebetween;
- reinforcing insulating means disposed between said joint and said cable shielding layer means;
- and
- sheath isolation means, located substantially in said gap, including an insulator with a plurality of electrode spheres disposed therein.
Dependencies are inferred from the claim text.