Power and control cable with a two layer metallic sheath for mar

Details Power and control cable with a two layer metallic sheath for mar Power and control cable with a two layer metallic sheath for mar

1993-07-22

1995-02-14

Nimmo, Morris H.

Electricity: conductors and insulators

Anti-inductive structures

Conductor transposition

156 51, 156 54, 156 56, 174102R, 174102D, 174105R, 174107, H01B 734

Patent

active

053897366

ABSTRACT:
In known cables, the cable core is surrounded by a metallic inner layer of a sheath, and the inner layer is enclosed by a corrugated metallic outer layer of the sheath. In these cables, a high resistance against corrosion and high temperatures at a good shielding of the electric conductors is not ensured.
The new cable (1) including the inner sheath layer (19) which is made of at least one flexible copper band (11) and defined by an electromagnetic shielding with a shielding attenuation from 80 to 115 dB, with the shield attenuation in this range being dependent from the wall thickness of the inner layer and rising monotonously with increasing wall thickness, and the outer sheath layer (27) which is made of a steel band and increases the high temperature resistance of the cable 1, has the advantages of a good temperature resistance even at high ambient temperatures, like e.g. in case of fire, and a high resistance with regard to corrosion.
The proposed cable is suitable in particular for use as power cable or control cable on ships.

REFERENCES:
patent: 2216435 (1940-10-01), Eckel
patent: 3340353 (1967-09-01), Mildner
patent: 3638306 (1972-02-01), Padowicz
patent: 4378462 (1983-03-01), Arnold, Jr. et al.
patent: 4398058 (1983-08-01), Gerth et al.
patent: 4477298 (1984-10-01), Bohannon, Jr. et al.
patent: 4487641 (1984-12-01), Bohannon, Jr. et al.
patent: 4569704 (1986-02-01), Bohannon, Jr. et al.
patent: 4595431 (1986-06-01), Bohannon, Jr. et al.
patent: 4622092 (1986-11-01), Bohannon, Jr. et al.

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