METHOD FOR MANUFACTURING OF HIGH-TEMPERATURE CONDUCTOR FOR POWER TRANSMISSION LINE AND CONDUCTOR MANUFACTURED BY THIS METHOD Russian patent published in 2012 - IPC H01B5/04 

FIELD: electricity.

SUBSTANCE: method for manufacturing of high-temperature conductor whereby iron core is made of one central and seven twisted steel wires with diameter of 0.85÷9.6 mm each and zinc-coated by layer with thickness of 0.04÷0.32 mm and simultaneous deformation with swaging degree of core cross-sectional area of 6÷8% and obtainment of total diameter of steel core of 6.0÷22.5 mm; steel core is coated by layer of high-temperature resistant grease with thickness of 0.3÷0.7 mm. On top of grease there are the first and the second layer of wires made of alloy based on aluminium with inclusion of up to 0.20÷0.40 wt % of zirconium; seven current-carrying wires with diameter of 1.15÷3.30 mm are interchanged with current-carrying wires with diameter of 0.85÷2.55 mm in the first layer and fourteen interchanging current-carrying wires with diameter of 1.45÷4.05 mm in the second layer; the first and the second layers are performed with the same lay pitch, in one direction, with linear contact of wires in the first and the second layers; external surfaces of wires in the second layer are deformed plastically with swaging degree of core cross-sectional area of 7÷9% and obtainment of total conductor diameter of 8.0÷32.5 mm.

EFFECT: possibility to use newly developed high-temperature conductor for transmission and distribution of power with rated alternating voltage of 36 kV, rated frequency of 50 Hz, maximum operating temperature of conductor of 210°C at maximum pass current density in order to reduce material and financial costs for projects of power transmission lines in districts with severe geographic and meteorological conditions, to implement reconstruction projects of power transmission lines and increase level of environmental safety.

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