C20ACi / C30ACi / C21–C25EMP — light locomotives 2250–3300 hp for 1000–1676 mm track
Light C-series locomotives with power from 2250 to 3300 hp for railways with limited axle loads and 1000 to 1676 mm track. The range includes C20ACi and C30ACi with AC transmission and C21–C25EMP with AC-DC transmission. The machines are designed for small-radius curves and tight tunnel clearances.
- Engine
- 7FDL8 (C20ACi), 7FDL12 (C30ACi, C21–C25EMP), turbocharged, electronic injection
- Power
- 2250 hp (C20ACi); 3300 / 3100 hp (C30ACi); up to 3300 hp gross, 2300–3000 at the wheels (C21–C25EMP) at 1050 rpm
- Transmission
- AC, inverter per axle (C20ACi, C30ACi); AC-DC with BrightStar (C21–C25EMP)
- Axle load / formula
- 16–21 t, C-C
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
All models in the series are fitted with 7FDL engines with turbocharging and electronic fuel injection. These engines have been proven in service at altitudes above 4000 m and at temperatures from −50 to +50 °C. They tolerate cyclic thermal loads well and lose little power at high altitude. Operating costs are low and availability is high. The series is designed for railways with limited axle loads, steep curves and narrow tunnel clearances.
The C20ACi is built on the lightest AC transmission platform in the manufacturer's range, and replaces the C20EMP series. The 7FDL8 engine develops 2250 hp at 1050 rpm, with an inverter on each axle, and electric braking acts down to zero speed. Starting tractive effort is up to 40,000 kgf, electric braking up to 20,000 kgf, axle load 17.5 t, axle formula C-C, and fuel capacity 3000–4600 L. The CCA control system provides centralized diagnostics and can switch off an individual traction motor, and the brake is electronic pneumatic.
The C30ACi is intended for heavier trains on lines with light axle loads, and it uses all the AC technologies the manufacturer applies in heavy-haul service. The 7FDL12 engine produces 3300 hp gross and 3100 hp tractive. Starting tractive effort is up to 54,880 kgf and continuous 46,900 kgf, electric braking up to 29,368 kgf, axle load 18.5–21 t and fuel 5000–8400 L. In terms of traction capacity, each of the two AC models replaces up to two DC-transmission locomotives. Locomotives of this platform (C30ACi) have been supplied to Ukrzaliznytsia.
The C21–C25EMP have AC-DC transmission and a BrightStar microprocessor system that monitors traction motor temperature. The 7FDL12 engine is configured up to 3300 hp gross, with 2300–3000 hp available for traction. Starting tractive effort is 32,000 kgf and continuous 26,500 kgf, electric braking 22,400 kgf, axle load 16–20 t and fuel 4500–6000 L. Overhaul intervals on these machines have been extended.
Technical specifications
| Engine | 7FDL8 (C20ACi), 7FDL12 (C30ACi, C21–C25EMP), turbocharged, electronic injection |
|---|---|
| Power | 2250 hp (C20ACi); 3300 / 3100 hp (C30ACi); up to 3300 hp gross, 2300–3000 at the wheels (C21–C25EMP) at 1050 rpm |
| Transmission | AC, inverter per axle (C20ACi, C30ACi); AC-DC with BrightStar (C21–C25EMP) |
| Axle load / formula | 16–21 t, C-C |
| Starting tractive effort | up to 40,000 kgf (C20ACi); up to 54,880 kgf (C30ACi); 32,000 kgf (C21–C25EMP) |
| Electric braking | up to 20,000 / 29,368 / 22,400 kgf |
| Gauge | 1000–1676 mm |
| Conditions | altitude above 4000 m, −50 to +50 °C |
Request a price and lead time
C20ACi / C30ACi / C21–C25EMP — light locomotives 2250–3300 hp for 1000–1676 mm track. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8602 10 00 00 |
|---|---|
| HS, 6 digits | 8602 10 |
| CN (EU) | 8602 10 00 |
| HTSUS (USA) | 8602 10 00 00 |
| China customs tariff | 8602 10 00 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
Which track gauge are C-series locomotives built for?
They are built for gauges from 1000 to 1676 mm. Axle load is 16 to 21 t depending on the model.
In what climatic conditions do the 7FDL engines work?
The engines have been proven at altitudes above 4000 m and at temperatures from −50 to +50 °C. Power loss at high altitude is small.
How does C30ACi differ from C20ACi?
C30ACi has a 3300 hp 7FDL12 engine and starting tractive effort up to 54,880 kgf. C20ACi has a 2250 hp 7FDL8 engine with tractive effort up to 40,000 kgf.
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