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For large scale applications in power engineering like transmission cables, transformers and motors different Bi-2223 tapes in long length are required. With respect to this applications we produce 55-filament tapes with a high strengthed matrix of lengths up to 600 m carrying currents up to 80 A (overall current density up to 10 kA/cm2). In short-samples critical current densities over 40 kA/cm2...