Aluminum alloy bus duct is a conductor that connects the current-carrying branch circuits in the electrical device. It is a carrier for collecting and distributing electricity, also known as a bus duct. It is customary to refer to the conductors of the current-carrying branch circuits in each distribution unit as bus ducts. The function of bus ducts is to collect, distribute and transmit electric energy. During operation, the bus duct has huge electric energy passing through it. When short-circuited, it is subjected to great heat and electrodynamic effects. The bus duct material, cross-sectional shape and cross-sectional area must be reasonably selected to meet the requirements of safe and economical operation.