Introduction. The paper considers the operation of interregional express trains operated by electric motor-car rolling stock whose route partly runs along non-electrified sections. These sections have electric trains hauled by a passenger diesel locomotive that also supplies electricity for the electric train auxiliary needs and the cabin microclimate system. https://www.spidertattooz.com/OMEGA-Speedmaster-Professional-Moonwatch-Co-Axial-Master-Chronometer-Chronograph-310-32-42-50-01-001-p19098/