(1) tubular conductor (bus adopts domestic advanced hot rolling and cold drawing process of cast seamless tube, with smooth surface, high dimensional accuracy, large tensile strength, not easy to produce discharge and deformation, and low skin effect;
(2) Excellent processing,welding, electrical conductivity and heat
resistance.
(3) Good convective heat dissipation condition, strong electrical conductivity, large carrying capacity, up to 1.8A/m㎡, 25% larger than the carrying capacity of equiplanar rectangular bus;
(4) Strong heat resistance, can improve the creep strength and carrying capacity of tubular conductor at high temperature, reduce losses, and improve the safety and reliability of power transmission and transformation system;
(5) the installation area is small, 1/3 less than that of soft conduction;
(6) anti-corrosion, not easy to ice, strong disaster resistance, long service life;
(7) Convenient installation, beautiful appearance, safe, stable and reliable operation, easy to repair and maintenance.
Therefore, the aluminum alloy tubular busbar has been gradually recognized by the electric power design department and widely used in various electric power projects.In recent years, only in 220kv to 500kv power transmission and transformation projects, the use of tubular conductor increases by 25-30% every year.According to the development trend of electric power, tubular conductor, as a brand new current-
carrying conductor, will replace the traditional rectangular, slot, bar-like bus and soft conductor in various fields such as line, electric power primary equipment, power generation and transformation system with its huge unique advantages, leading the new trend of electric power materials and showing great development space.
