公开(公告)号：CA1045222A

公开(公告)日：1978-12-26

申请号：CA232566

申请日：1975-07-30

Applicant: SOUTHWIRE CO

Inventor： SCHOERNER ROGER J ,  ROWLAND BOBBY A ,  BUTLER HUGH D JR ,  CHIA ENRIQUE C ,  THRASH FRANK R JR

IPC: C22C21/00 ,  H01B1/02 ,  H01B5/02 ,  H01B5/08 ,  H01B5/10

Abstract: The disclosed composite conductor has a steel component for supporting the weight of an annealed aluminum alloy -- steel composite overhead electrical conductor. Annealing the high strength aluminum alloy component improves service performance of the conductor by providing for sustained operation at high conductor temperatures without detriment to the mechanical properties thereof. The aluminum alloy component is specially formulated to have a tensile strength in the annealed condition which is substantially equivalent to the tensile strength of hard drawn EC aluminum. Consequently, the conductor of this invention has the strength of prior art cables having hard drawn aluminum components, while at the same time yielding high temperature operating characteristics of prior art cables having annealed aluminum components.