High Current Composite Superconductor Electrical Power Lead

Abstract We have developed and tested a nominal 100A lead to conduct electrical current between room and helium temperatures. The lead affords considerable savings in refrigeration costs by incorporating elements made of high transition temperature superconductors (HTSC). The lead was designed to operate both in the conduction mode and in the vapor cooled mode. Several leads have been combined to make a high current composite electrical conductor which carries currents of up to 1200A.