12 October 2015 y.
3ES5K Locomotive with Individual Control of Traction Motors is under Test Trials
Novocherkassk Electric Locomotive Building Plant (NEVZ, an entity of Transmashholding, Russia) sent for tests its modified 3ES5K ‘Yermak’ locomotive with individual control of traction motors to Chita Depot of Transbaikal Railroad. The locomotive will undergo a test run of 5,000 km, being a key part of test program for all new locomotives.
The new modified 3ES5K is a joint development of the engineers of NEVZ, BELNII and Russian Railways. Its signature feature is an individual control of traction motors that allows achieving of maximum propulsive factor of the locomotive. When compared to serial 2ES5K and 3ES5K, the new locomotive has 10% better traction power value in adhesion zone.
The key advantages of the new locomotive are that it may run on lines with challenging profile, and advanced tonnage rating of freight trains resulting in enhanced locomotive performance. Independent excitation of traction motors in thrust mode applied between 0 and 50 km/h ensures resistance to slipping. The independent excitation is used for the most severe duty cycles, e.g. during taking-off, starting up to speed and upward journeys, and series excitation is applied to run on level track sections at high speed.
The axle load increased to 24.5 t (the basic 3ES5K loco has 24 t) enables improved rated tractive effort without additional adverse effect to rails and locomotive mechanical scope.
The electric locomotive is equipped with microprocessor-based control system that transfers diagnostic data to servers of maintenance depot of TMH-Service and manufacturing plant for quick remedial actions, thus improving locomotive reliability and overall availability rate of the fleet. Upon completion of its trial runs, the locomotive will be handed over to the operator.