PERFORMANCE SUMMARY OF A 4,000 A HIGH-TEMPERATURE SUPERCONDUCTING CABLE CONDUCTOR PROTOTYPE

Multifilamentary superconducting Bi-2223 tapes made with a powder-in-t ube process have been used to assemble multistrand, multilayer cable c onductor prototypes, The electrical performance of these conductors ha s been evaluated at 77 K in self-field with DC and AC transport curren ts, Results show that these conductor prototypes, carrying up to 4,200 A DC, approach the 2,000 A AC operation threshold required for the co mmercial application of HTS power transmission cables, Combined with r ecent improvements in tape mechanical performance, stability, and long -length manufacturability, these results show the potential for use of HTS tapes in power transmission cables.