Performance of a Polycrystalline SmBaCuO Superconducting Fault Current Limiter.

This study has assessed the performance of a resistive superconducting fault current limiter based on polycrystalline SmBaCuO (Sm-123) subjected to 750 short-circuit events with acting time 80 ms. Preliminary results indicate that polycrystalline Sm-123 cuprates can be used to build superconducting fault current limiters. The results of this study have demonstrated that after 616 short-circuit repetitions, the superconducting element was able to limit the fault current without degradation on low-level fault current density J < 3.7 kA/cm. [ABSTRACT FROM AUTHOR]