We carried out dynamic vibration tests for two types of current leads (straight and arc types) which had a multi-stacked configuration of Ag-sheathed Bi2223 tapes impregnated with epoxy resin in a concaved reinforcing gutter. The straight-type lead was evaluated for an operating current of 700 A after every vibration test in liquid nitrogen for one hour under dynamic strain deformation of 50-100µ on the surface of the reinforcing material covering the current lead. We also executed vibration tests for arc-type current leads which were combined with an actual energized superconducting coil for Maglev. There was no damage to either type of current lead during these vibration tests. So we confirmed a good prospect for the application of these current leads to actual Maglev superconducting magnets.

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