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Scope of Application

The AC double-section electric freight locomotive 2ES7 with asynchronous traction drive is designed to haul freight trains on 1520 track gauge rail lines electrified at 25kV AC 50Hz. The locomotive can haul trains with 9,000 tons on gradients up to 6 0/00 and trains with 6,300 tons on gradients up to 10 0/00

The design provides the possibility to couple locomotives for multiple-unit operation, as well as to use one section of the locomotive in a stand-alone mode.

Class 2ES7 Locomotive. Technical Specifications


Freight Locomotive

Voltage system

25 kV AC / 50 Hz

Type of traction motor suspension


Track gauge, mm


Wheel arrangement

2 (2о -2о)

Top speed, km/h


Axle load, kN


Overall weight at 0.7 t sand capacity, t


Maximum tractive power at the wheel rim, kW


Starting tractive effort, kN


Continuous tractive power, kW


Continuous tractive effort at 55 kmh, kN


Continuous tractive effort at 80 kmh, kN


Continuous tractive effort at 120 kmh, kN


Braking power of electric regenerative brake at the wheel rim, kW


Power factor at load of more than 25 % of continuous operation g


Wheel tread diameter new, mm


Advantages of Class 2ES7 Locomotive

  • High tractive effort and increased maintenance intervals are achieved by implementation of Siemens asynchronous traction motors with axle control based on IGBT traction converters
  • The microprocessor-based control system provides different functions such as automatic train operation, diagnostics, data transmission via radio communication channels, data recording, and GPS/GLONASS positioning.
  • The state of the art train safety system BLOC ensures the highest safety in railway operation
  • The new modular type driver cabin has improved ergonomic and hygienic characteristics
  • High maintainability due to modular equipment arrangement
  • Maintenance intervals are increased by 5 times*
  • Specific energy consumption for train traction is reduced by 15-20 % (compared to electric locomotives with commutator-type drive unit)