SDD6A diesel locomotive is developed and manufactured for Angola as passenger, freight and shunting locomotive. It is equipped with Cummins QSK60-L1 diesel engine with maximum service power 1640kW. Main AC-DC transmission is employed with DC and AC transmission for auxiliary system. Two center-plate-less radial bogies with three axles for each and single pull rod for axle box are used. The mechanism of four low-position tractive rods is utilized for transmission of tractive and braking forces. The integral car body is of inside corridor. The braking system is equipped with double-purpose brake of air and vacuum. It is capable of multiple units in consist.
Basic locomotive parameters:
1. Purpose: passenger, freight and shunting locomotive
2. Applicable environment: operate normally in severe sand, dry, hot and desert areas
3. Gage: 1067mm
4. Transmission mode: AC-DC transmission
5. Axle arrangement: Co-Co
6. Wheel diameter: 914mm
7. Axle load: 16×(1±3%)
8. Calculating locomotive weight with full service: 96×(1±3%)t
9. Maximum service power of the engine: 1640kW
10. Locomotive speed (calculated at half worn driving wheel as 880mm):
Maximum running speed: 120km /h
Continuous speed: 21. 3km/h
11. Locomotive tractive effort at wheel rim (calculated at half worn driving wheel as 880mm):
Starting tractive effort: 314kN (starting current limit)/310kN (adhesion limit)
Continuous tractive effort: 189kN
12. Minimum curvature radius negotiated: 80m
13. Fuel tank capacity: 4000L
14. Oil volume: 281L
15. Water volume: 600kg
16. Sand volume: 300kg
17. Center line of coupler above rail head: 889mm±10mm
18. Locomotive length: 18500mm
Complaint
