H - Electricity – 02 – G
Patent
H - Electricity
02
G
H02G 9/04 (2006.01) H02G 9/06 (2006.01)
Patent
CA 2543520
A method for shielding the magnetic field generated by an electrical power transmission line (1) and an electrical power transmission line (1) so shielded are described. The electrical power transmission line (1) comprises at least one electrical cable (2) and at least one shielding element (6) made of ferromagnetic material arranged in a radially outer position with respect to the at least one cable (2), which shielding element (6) comprises a base (10) and a cover (11). The line (1) further comprises a supporting element (7) coupled to at least the base (10) of the shielding element (6). In particular, the ferromagnetic material of the shielding element (6) is selected form the group comprising: grain oriented silicon steel, preferably containing a silicon content comprised between about 1% and about 5%, non-grain oriented silicon steel, Permalloyè, Supermalloyè.
L'invention porte sur un procédé de blindage du champ magnétique produit par une ligne électrique (1) et sur une ligne électrique (1) ainsi blindée. Une telle ligne comprend au moins un câble électrique (2) et au moins un élément de blindage (6) de matériau ferromagnétique, disposé en position radiale extérieure par rapport au ou aux câbles et consistant en une base (10) et en une couverture (11). La ligne comprend également un support (7) relié au moins à ladite base (10). Ledit matériau ferromagnétique est choisi parmi: de l'acier au silicium à grains orientée dont la teneur en silicium est de préférence comprise entre environ 1 % et environ 5 %, de l'acier au silicium à grains non orientés, du Permalloy?, et du Supermalloy?.
Belli Sergio
Borghi Enrico
Donazzi Fabrizio
Maioli Paolo
Kirby Eades Gale Baker
Prysmian Cavi E. Sistemi Energia S.r.l.
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