ELECTRIC TRANSMISSION CABLE LINE Russian patent published in 2006 - IPC H02G7/20 B60M1/02 

FIELD: electric engineering and power engineering, possible utilization for engineering and construction of electric transmission cable lines satisfying sanitary-and-epidemiological rules and requirements for maximally allowed magnetic field levels of industrial frequencies in houses, administrative and industrial buildings, and at territories intended for building.

SUBSTANCE: cable electric transmission line includes one or more wire blocks, each one of which has cables of phases A, B, C and zero wire, inside each cable block cables of each phase and zero wire are evenly positioned along perimeter of its circle or circles, and centers of all circles inside each cable block coincide with its center. In cable line mutual position of cable blocks and their rotation angles around their centers are selected so, that strength of magnetic field formed by currents of this line was minimal.

EFFECT: possible decrease of strength (induction) of magnetic field of cable electric transmission line with large transferred power and little distance to surface of floor or inner surface of wall of house, to maximal allowed level of industrial frequency magnetic fields for houses, administrative and industrial buildings, and at territories intended for building.