Current limiting arrangement e.g for locomotive power converter

摘要

The arrangement includes at least one inductive resistance (1, 2) which increases its resistance value suddenly when reaching a pre-settable current limit. The at least one inductive resistance comprises a coil (1-4) with a core (4) from a hard-magnetic material, whose relative permeability increases suddenly at overstepping of a pre-settable current limit, according to a magnetic field intensity limit. The hard-magnetic material is preferably a hard ferrite, a neodym-iron-boron alloy, a samarium-cobalt alloy, an aluminum-nickel-cobalt alloy, a selenium-cobalt alloy, an iron-cobalt-vanadium alloy, and/or an alloy of cobalt with at least one rear earth metal.