Power cable with water swellable agents and elongated metal elem

Details Power cable with water swellable agents and elongated metal elem Power cable with water swellable agents and elongated metal elem

1989-09-07

1991-04-23

Nimmo, Morris H.

Electricity: conductors and insulators

With fluids or vacuum

With fluid stops

174 23R, 174102SC, 174105SC, H01B 728

Patent

active

050102095

ABSTRACT:
A high voltage electrical power cable with a stranded central conductor encircled by insulation, a metal tape, metal strips or metal wires following helical paths outwardly of the insulation and a water swellable material at least between the adjacent edges of the tape, strips or wires. Preferably, the water swellable material is included with a polymeric material which is flowable at a temperature at least as low as 100.degree. C., the polymeric material has a 100 gram needle penetration value in the range from 50-100 tenths of a millimeter at 25.degree. C. and the water swellable material has a particle size not greater than 200 microns.

REFERENCES:
patent: 2886631 (1959-05-01), Muller
patent: 3538235 (1970-11-01), Arendt
patent: 3558801 (1971-01-01), Eilhardt
patent: 3790697 (1974-02-01), Buckingham
patent: 3943271 (1976-03-01), Bahder et al.
patent: 4105619 (1978-08-01), Kaufman et al.
patent: 4360704 (1982-11-01), Madry
patent: 4435613 (1984-03-01), Gaubert
patent: 4638114 (1987-01-01), Mori
patent: 4703132 (1987-10-01), Agostinelli et al.
patent: 4791240 (1988-12-01), Marin et al.
patent: 4870226 (1989-09-01), Kreuger et al.
Waterblocking, a Dutch Specialty, Lantor Group Brochure, pp. 1 through 4 (no date).

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