In the power system, the busbars connect the various current-carrying branch circuits in the power distribution unit to function to collect, distribute, and transmit electrical energy. The busbars are roughly classified into the following three categories according to their appearance and structure:
Hard busbars: including rectangular busbars, round busbars, tubular busbars, etc.
Soft busbars: including aluminum stranded wire, copper stranded wire, steel core aluminum stranded wire, expanded diameter hollow wire, etc.
Enclosed busbars: including common box busbars, split-phase busbars, etc.