FIELD: transport.
SUBSTANCE: invention relates to railway transport. Proposed device comprises controlled rectifier connected with AC system incorporating traction motor winding current transducers and locomotive speed transducer, driver signal comparators and those of said transducers. Additionally, said device comprises computer of the ratio between armature winding mean current and excitation current and computer of difference between traction motor armature winding maximum and minimum currents connected to comparator of excitation current control channel and with pneumoelectric gate of sand feed valve.
EFFECT: expanded operating performances.
2 dwg
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