The invention discloses a connection column for reducing temperature rise at an electrician
busbar lap joint part, belonging to the field of
electrical equipment, and specifically relates to a connection column for an electrical
busbar. The connection column is provided with a first cylindrical portion which is in
interference fit with a pre-drilled hole in an electrician
busbar, wherein the first cylindrical portion is provided with
conductivity; a second cylindrical portion with
conductivity is coaxially arranged in the first cylindrical portion; the first cylindrical portion is in
interference fit with the second cylindrical portion; and the
thermal expansion coefficient of the second cylindrical portion is greater than the
thermal expansion coefficient of the first cylindrical portion. The connection column for reducing temperature rise at an electrician busbar
lap joint part has the advantages that 1) the same
lap joint length can generate larger conductive area, so that the
current density can be reduced and the low temperature rise of the busbar can be realized; 2) the use level of the busbar is reduced so that the resource is saved; 3) the electric clearance or the phase spacing can be enlarged, so that the electrical safety of equipment is improved; and 4) the wiring width of the busbar is reduced, so that the occupied space of the busbar can be reduced.