Fabrication and properties of Bi-2223 tapes

Bi-2223 tapes in different variations represent a good basis to build up pr ototypes for power applications. With respect to these applications we prod uce 55 filament tapes of lengths up to 600 m carrying currents of 57 A. A s tatistical analysis confirms reproducibility and quality. In 1 m samples th e critical current density reaches 40 kA/cm(2). An overview of the fabricat ion process of the tapes is given. Besides the mechanical and microstructur al properties of different Ag/Ag-alloy tapes we present the current carryin g capability in different magnetic fields and at different temperatures. Ad ditionally the tapes are characterized regarding to their BC losses. These tapes of long lengths are used to fabricate power transmission cables, tran sformers and motors.