Note 1 to entry: The operating characteristics, usually the current-carrying capacity of the superconducting wire, tend to improve toward short-sample characteristics. The short-sample characteristics is the current-carrying capacity of a superconducting wire as measured on a short sample, usually a few metres long, in a background magnetic field transverse to the direction of current flow.

Note 2 to entry: The training effect occurs also in short samples, which are usually a few metres long in a magnetic field normal to their length.

Note 3 to entry: This entry was numbered 815-15-49 in IEC 60050-815:2015.