METHOD FOR MANUFACTURING OF HIGH-TEMPERATURE CONDUCTOR FOR POWER TRANSMISSION LINE AND CONDUCTOR MANUFACTURED BY THIS METHOD

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 0.859.6 mm each and zinc-coated by layer with thickness of 0.040.32 mm and simultaneous deformation with swaging degree of core cross-sectional area of 68% and obtainment of total diameter of steel core of 6.022.5 mm; steel core is coated by layer of high-temperature resistant grease with thickness of 0.30.7 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 0.200.40 wt % of zirconium; seven current-carrying wires with diameter of 1.153.30 mm are interchanged with current-carrying wires with diameter of 0.852.55 mm in the first layer and fourteen interchanging current-carrying wires with diameter of 1.454.05 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 79% and obtainment of total conductor diameter of 8.032.5 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 210C 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. ^ 2 cl Изобретение относится к области электротехники. Способ изготовления высокотемпературного провода, в котором изготавливают стальной сердечник из одной центральной и семи скрученных вокруг нее стальных высокопрочных проволок диаметром каждая 0,85÷9,6 мм, оцинкованных слоем толщиной 0,04÷0,32 мм, с одновременной деформацией со степенью обжатия площади поперечного сечения сердечника 6÷8% с получением общего диаметра стального сердечника 6,0÷22,5 мм, покрывают стальной сердечник слоем толщиной 0,3÷0,7 мм смазкой, стойкой к воздействию высокой температуры. Поверх слоя смазки расположены последовательно первый и второй повивы проволок из сплава на основе алюминия, включающего цирконий 0.20÷0,40 вес.%, с чередованием семи токопр