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«2ES7»

«2ES7»

Description Advantage Specifications

The 2ES7 freight two-section electric locomotive with asynchronous traction motors is designed for driving freight trains on 1520 mm gauge railways electrified with alternating current voltage of 25 kV.

The 2ES7 freight electric locomotive is capable of driving a train weighing up to 9,000 tons in sections with a track profile up to 8.2 0/00, which is confirmed by the operational tests carried out.

When developing an electric locomotive, advanced technological solutions from domestic manufacturers were taken as a basis. The crew part and body were developed jointly with specialists from the Research and Design Institute of Rolling Stock (JSC VNIKTI), the microprocessor control and diagnostic system was developed jointly with the Ural company SOUTH. The general design, equipment layout, development of electrical circuits and algorithms for the operation of control and cooling systems were carried out by specialists of Ural Locomotives.

Years of production: 2010-2022

Advantage

The microprocessor control system of MPSU and D includes the functions of auto guidance, diagnostics, data transmission via technological radio communication channels, parameter registration, GPS/GLONASS positioning
Integrated asynchronous traction drive based on traction converters with IGBT transistor modules, which allows for high traction
The specific consumption of electricity for train traction has been reduced by 15-20% in relation to electric locomotives with collector drive
Asynchronous traction motors with axial torque control make it possible to realize a high thrust force
The inter-repair runs have been increased by 5 times in relation to electric locomotives with a collector drive

Specifications

Current type Variable
The axial formula 2(2о - 2о)
Suspension of traction motors Axial support
Rated voltage on the current collector, kV 25
Track, mm 1520
Structural speed, km/h 120
Static load from the wheelset on the rails, kN 245
The diameter of the new wheel in the riding circle, mm 1250
Maximum power on the shafts of traction motors, kW 8800
Coupling weight of an electric locomotive with 0.7 sand reserves, t 200 ± 2
Maximum pulling force when starting, kN 784
Continuous operation power on the shafts of traction motors, kW 8400
The thrust force of the continuous mode at a speed of 55 km/h, kN 538
The thrust force of the continuous mode at a speed of 80 km/h, kN 370
Maximum thrust at a speed of 120 km/h, kN 247
The power of the electric regenerative brake on the shafts of traction motors, kW 8400
Power factor at loads above 25% of continuous operation >0,95
The diameter of the new wheel in the riding circle, mm 1250
Service life, years 40

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