12 October 2015 y.
3ES5K electric locomotive with individual traction motor control performs test runs
Novocherkassk Electric Locomotive Plant (NEVZ, part of JSC Transmashholding) moved 3ES5K ‘Ermak’ prototype locomotive with individual traction motor control to Chita depot at the Transbaikal Railway for testing. There, it will perform the 5000 km test run as an essential part of the new locomotive test program.
The modified 3ES5K is a product of joint development by experts of NEVZ, VElNII and the Russian Railways. Its distinctive property is the individual traction motor control ensuring the maximum locomotive thrust coefficient. The thrust force value in the adhesion zone of the new locomotive is by 10% higher as compared with 2ES5К and 3ES5K of serial manufacture.
The main advantages of the new electric locomotive are associated with its capability of operating on track sections with rugged topography, hauling freight trains with higher tonnage rating and the consequently improved locomotive efficiency. The system of separately excited motors provide for wheel-skid resistance in traction condition within the speed range of 0 to 50 km/h. At the most difficult operating modes such as starting, acceleration and operation on truck sections with an ascending gradient, the operation with separate excitation is applied, and when the locomotive is operated on track sections at high speeds it uses series excitation.
Axle load is increased up to 24.5 t (standard made 3ES5K - 24 t) provides for locomotive rated traction force increase; however, it doesn’t result in increased rail wear or reduced reliability of the locomotive hardware.
The electric locomotive is equipped with microprocessor control system, which transmits diagnostic data to servers in maintenance depots of TMH Service Company and the manufacturing plant for efficient malfunction repair. It secures the locomotive reliability and improves the fleet availability. After the test run is completed, the locomotive will be put into service.