Abstract
A novel method for AC loss measurement of a long length high T c superconducting (HTSC) wire has been investigated. An 8 m long (Bi,Pb) 2Sr 2Ca 2Cu 3O 10+ x Ag clad multifilament wire was selected to prepare a special sample in which the inductive voltage induced by AC transport currents can be cancelled. Consequently the resistive voltage of the HTSC long wire can be measured. The HTSC sample has been tested at 77 K with AC transport currents up to 3 I c and at various frequencies from 10 Hz to 1 kHz. The loss of the (Bi,Pb) 2Sr 2Ca 2Cu 3O 10+ x Ag clad wire related to its zero field AC transport current characteristics has been obtained experimentally, and results also prove that this method is effective and useful for AC loss measurement of a long length HTSC wire.
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