Why does the busbar use aluminium instead of copper?
The most important raw material in the production process of busbar is conductor.The material of the conductor directly influences the price of the bus.The performance of the conductor is directly related to the performance of the bus.The choice of internal conductors is especially important if a qualified bus-groove product can meet users' requirements and can play its power transmission and distribution.The conductor used is high quality T2 electrolytic copper, which is more excellent than brass copper. 【Aluminum bus bar】
Copper, aluminum conductor metal material comparison: copper density 8.9 g/cm3, aluminum density 2.7 g/cm3;The electrical conductivity of copper is second only to silver, and the IACS value is 100 percent (international standard annealing electrolytic copper standard value), high purity aluminum (99.996%) and industrial pure aluminum (99.5%) of IACS are 64.94% and 59%, that is, the conductivity of copper is about 35% ~ 40% higher than aluminum.The chemical stability of copper in the atmosphere is better, aluminum is more active, but adding trace alloy elements can improve its chemical stability.The strength and hardness of copper is better, pure aluminum is slightly worse, but aluminum alloy can obtain higher strength and hardness after heat treatment, because of its light weight, its strength is much higher than that of copper.【Aluminum bus bar】
Copper in the natural resources are relatively limited, plus the rise in the cost of smelting industry in recent years, copper prices rose sharply, the material cost is high, the manufacturer's market development will bring greater impact.Aluminum resources are relatively abundant, the smelting technology is mature and the price is low.
The hefei busway made by aluminum busbar conductor has been widely used in some foreign developed countries, and its manufacturing technology and technology have matured.In recent years, some domestic bus system manufacturer also began to make high quality aluminum conductor bus duct, and has set up in engineering application by the user and design units of affirmation and praise, shows its unique superiority.【Aluminum bus bar】
Due to copper and aluminum conductor conductor cross section shape is similar, therefore the domestic bus duct manufacturers are on the wrong bus duct to make important changes product structure, design, manufacturing aluminum conductor bus duct, the focus is to improve the production process (such as improved conductor surface treatment technology, in order to strengthen and protect the coating surface quality of the aluminum conductor) and add the relevant tooling equipment.Therefore, the comparative advantage of the aluminum conductor groove in the technology, the economic aspect and the copper conductor groove is the main point of the application.
