Method of screening the magnetic field generated by an...

Details Method of screening the magnetic field generated by an... Method of screening the magnetic field generated by an...

H - Electricity

02

G

H02G 9/06 (2006.01) H01B 9/02 (2006.01)

Patent

CA 2410902

A description is given of a method for screening the magnetic field generated by an electrical power transmission line comprising at least one electrical cable. The method comprises the insertion of the cables into a conduit comprising at least one layer of a non-grain-oriented ferromagnetic material, having a magnetic curve with a maximum value of relative magnetic permeability (µmax) corresponding to a magnetic field value (Hµmax) of less than 1000 A/m. In one example, the ferromagnetic material is a steel with a low content of impurities.

La présente invention concerne un procédé de criblage du champ magnétique produit par une ligne de transmission électrique comprenant au moins un câble électrique. Ce procédé consiste à introduire les câbles dans un conduit comportant au moins une couche de matériau ferromagnétique à grains non orientés, présentant une courbe magnétique à valeur maximale de perméabilité magnétique (µ¿max?) correspondant à une valeur de champ magnétique (H¿µmax?) inférieure à 1000 A/m. Dans un mode de réalisation, le matériau ferromagnétique est un acier à faible teneur en impuretés.

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