The analysis of dynamic properties of associate electricdrive with the current system of feed of anchor chains of engines by means mathematical description of electromechanics processes flowing in twomass electricdrive is conducted. Differential equalizations for resilient moments, the analysis of which specifies on more high frequency properties of associate electricdrive with the current system of feed on comparison with the feed from the source (transformer) of tension, are shown out. High frequency properties of associate electricdrive enable to work off more «shallow» indignations from the side of mechanical equipment of machine, that allows to decrease his wear.
