SS7C Passenger Electric Locomotive

Updated: 2016-04-22

Product introduction

SS7C Passenger Electric Locomotive

  The SS7C passenger electric locomotive is a 6-axle passenger electric locomotive with a maximum operating speed of 120km/h developed by the company to meet the needs of speed increase on existing lines. The locomotive adopts a single-phase power frequency system, voltage 25kV, AC-DC drive, locomotive axle weight 22t, traction characteristics are constant current starting + quasi-constant speed characteristics, with power factor compensation and axle weight transfer electrical compensation devices, suitable for long ramps and multi-curve lines.

Application Scenario

Key technologies

1.The main components such as the locomotive body, bogie, and transformer are all lightweight.

2.The axle type of the locomotive bogie is Bo-Bo-Bo, with single-side braking, motor rolling bearing nose suspension and low-position inclined traction rod.

3.The main circuit adopts two-section bridge phase control (full control + semi-control) and other separate excitation circuits, weakening the stepless speed regulation and stepless magnetic field.

4.The characteristic control mode of constant current starting and quasi-constant speed operation is adopted, and microcomputer control and LCU logic control unit are adopted.

5.Regenerative braking is adopted for electric braking.

6.There is a power supply for train heating and air conditioning, using double-pipe air supply.

Main technical parameters

Current system

Single-phase power-frequency AC

Gauge

1435mm

Axle arrangement

Bo-Bo-Bo

Axle load

22t

Locomotive curb weight

132t

Continuous power

4800kW

Maximum operating speed

120km/h

Continuous speed of locomotive

76km/h

Continuous traction force

220kN

Starting traction force

310kN

Electric braking mode

Regenerative braking