The electrical performance of a new form of superconducting YBa2Cu3Oy fabri
cs prepared in a self-supporting form is discussed. The single domain Y123
fabrics processed by an infiltration process from precursor Y2O3 cloths hav
e dimensions of thick films and posses the structure replica of precursor Y
2O3 fabrics. The electrical properties of the fabrics determined by dc-susc
eptibility and dc-measurements are discussed. The T-c of the fabrics from a
c-susceptibility measurements are found to be around 90 K. The transport J(
c) measurements in self-field showed the transition between the superconduc
ting state and flux-flow regime to occur at a critical current density (J(c
)) exceeding 5.5 x 10(4) A/cm(2) at 77 K. Quench tests at 77 K using pulsed
currents up to five times J(c) with a duration of 25 ms are discussed. (C)
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