| WDG-6G |
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Roza based WDG-6G twins at Bilaspur |
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| Specifications |
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Configuration:
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| • Commonwealth | Co-Co |
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| Gauge | 1,676 mm (5 ft 6 in) |
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| Bogies | Co-Co Fabricated Bogie |
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| Wheel diameter | New: 1,092 mm (43.0 in)
Condemned: 1,016 mm (40.0 in) |
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| Minimum curve | 174 m (571 ft) radius |
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| Wheelbase | 1,900 mm (6 ft 3 in) |
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| Pivot centres | 14,224 mm (46 ft 8.0 in) |
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Length:
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| • Over couplers | 22,313 mm (73 ft 2.5 in) |
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| Width | 3,200 mm (10 ft 6 in) |
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| Height | 4,227 mm (13 ft 10.4 in) |
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| Axle load | 23 t (23 long tons; 25 short tons) |
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| Loco weight | 138 t (136 long tons; 152 short tons) |
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| Fuel type | Diesel |
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| Fuel capacity | 8,300 L (1,800 imp gal; 2,200 US gal) |
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| Lubricant cap. | 1,300 L (290 imp gal; 340 US gal) |
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| Coolant cap. | 1,468 L (323 imp gal; 388 US gal) |
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| Sandbox cap. | 170 L (37 imp gal; 45 US gal) |
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| Prime mover | GE GEVO-16 |
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| RPM: | |
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| • Maximum RPM | 1,050 rpm |
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| Engine type | V16 Diesel engine, 4-stroke engine |
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| Aspiration | turbocharged |
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| Displacement | 15.7L per cylinder |
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| Alternator | 5GDY131B |
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| Traction motors | 5GEB32B5 AC traction motors |
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| Cylinders | 16 |
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| Cylinder size | 250 mm × 320 mm (9.8 in × 12.6 in) |
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| Transmission | diesel electric |
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| Gear ratio | 85:16 |
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| MU working | Yes, AAR Type |
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| Loco brake | Air, Dynamic Brake |
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| Train brakes | Air |
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| Compressor | 178 CFM @ 145-psig |
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| Couplers | CBC AAR Type-E |
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| Performance figures |
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| Maximum speed | 100 km/h (62 mph) |
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| Power output | 6,000 hp (4,500 kW) |
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Tractive effort:
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| • Starting | 570 kN (130,000 lbf) |
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| • Continuous | 420 kN (94,000 lbf) |
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| Brakeforce | 290 kN (65,000 lbf) |
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| Career |
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| Operators | Indian Railways |
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| Numbers | 69001+ |
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| Nicknames | ANGAD |
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| Locale | All over India |
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| Disposition | Active |
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The Indian locomotive class WDG-6G (GE ES57ACi) is a class of diesel–electric locomotive used by the Indian Railways for freight duty. The locomotive is a higher power variant of the WDG-4G locomotive which was also designed by General Electric. The design platform is based on the GE Evolution Series and features a 4-stroke 16-cylinder fully turbocharged engine which delivers around 6,000 hp (4,500 kW), making it the most powerful diesel locomotive of IR (the second being its WDG-5 predecessor). It is the only 6,000 hp diesel electric locomotive at 23t axle load, making it the lightest locomotive in its category in the world. This locomotive, has been named as "Angad" after the character of the same name from the Hindu Epic Ramayana.