Electrical conductor

Details Electrical conductor Electrical conductor

2009-01-29

2010-12-07

Nguyen, Chau N (Department: 2831)

Electricity: conductors and insulators

Conduits, cables or conductors

Conductor structure

Reexamination Certificate

active

07847192

ABSTRACT:
An electrical conductor L is specified, which has a central core (1) and at least two layers which are arranged above the core (1) and are composed of electrically conductive individual wires, which are twisted around the core (1) in a first layer (2) and around the first layer (2) in a second layer (4). The individual wires of the first layer (2) are steel wires with an ultimate tensile strength of between 800 N/mm2and 2000 N/mm2, and the individual wires of the second layer (4) are copper wires with an ultimate tensile strength of between 250 N/mm2and 400 N/mm2. A wire composed of a soft-annealed copper with an ultimate tensile strength of at least 210 N/mm2is used as the core (1). The lay length of the copper wires (5) is between 8×D and 18×D where D is the diameter of the conductor L over the second layer.

REFERENCES:
patent: 2138420 (1938-11-01), Grobl et al.
patent: 3339012 (1967-08-01), Hutchins, Jr.
patent: 3676578 (1972-07-01), Cahill
patent: 7228627 (2007-06-01), Yoshimura et al.
patent: 2003/0037957 (2003-02-01), Ueno et al.
patent: 102004041452 (2006-03-01), None
patent: WO2007015345 (2007-02-01), None

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