Osnovno znanje o sabirnici

Busbar, as an indispensable component of the power system, its material selection is crucial. Common busbar materials include copper, aluminum, aluminum alloys, and steel. Soft busbars often use multi strand steel core aluminum stranded wires (i.e. overhead wires), while hard busbars are mainly made of aluminum and copper bars, and tubular busbars are mostly made of aluminum alloy materials. Bus duct is a high current trunk type tapping power supply system composed of a metal shell, conductive material, and insulation material, used for high current transmission in industrial plants, high-rise buildings, and other places.

Konkretno, bakrene sabirnice poznate su po niskom električnom otporu, visokoj mehaničkoj čvrstoći i snažnoj otpornosti na koroziju, ali one su relativno skupe . Često se koristi u situacijama kada je kontinuirana radna struja velika, prostor je mali, a korozivan je i alumin, ali manji koroziv {{1 {1 1.7-2 puta od bakra, lagan je i pristupačan, što ga čini široko korištenim materijalom sabirnice .

In addition, aluminum alloy busbars have also attracted much attention. It is divided into two types: aluminum manganese alloy and aluminum magnesium alloy, and mostly in the form of pipes. Aluminum manganese alloy busbar has a high current carrying capacity, but its mechanical strength is slightly inferior. After taking appropriate compensation Mjere, može se široko koristiti; S druge strane, aluminijske magnezijske legurne sabirnice imaju relativno uski raspon primjena zbog velike mehaničke čvrstoće, teškog zavarivanja i niske struje nošenja .

S druge strane, čelične sabirnice favorizirane su za njihovu visoku mehaničku čvrstoću i nisku cijenu ., ali njegova je otpornost visoka, a postoje značajne histereze i gubitaka vrtložnih struja u AC okruženjima, što ga čini prikladnijim za krugove malih kapaciteta s radnim strujama većim od 300-400 {}}