NDJ3
The NDJ3 "Great Wall", previously labeled the "Harmony Great Wall" is the only higher-speed diesel multiple unit that is still operating in China. It was first designed to be used for passenger transport in the 2008 Olympics, and has become a mature technology platform with export orders to Nigeria despite initial flaws related to overheating of electrical cables in the power car.
| NDJ3 | |
|---|---|
A NDJ3 approaching Qinglongqiao railway station | |
the buffet car, fitted with panoramic windows | |
| Built at | CRRC Nanjing Puzhen CRRC Qishuyan |
| Entered service | 2008 |
| Number built | 9 |
| Number in service | 9 |
| Formation | M-T-T-T-T-T-T-T-M (China Railway) M-T-T-T-T-T-T-T-T-M (Nigerian Railway) |
| Operators | China Railway Nigerian Railway Corporation |
| Specifications | |
| Train length | 220.5 m (723 ft 5 in) |
| Width | 3.105 m (10 ft 2.2 in) |
| Height | 4.433 m (14 ft 6.5 in) |
| Wheel diameter | 1.05 m (41 in)(power car, new) 970 mm (38 in) (trailer, new) |
| Maximum speed | 160 km/h (99 mph) |
| Axle load | 21 tons |
| Traction system | eight 530 kW |
| Prime mover(s) | two 12V280ZJ |
| Engine type | diesel |
| Traction motors | ZD106 |
| Power output | 3530 kW |
| Tractive effort | 4240 kW |
| Transmission | AC–DC |
| Acceleration | 1.368 km/(h⋅s) (0.850 mph/s) (starting) |
| AAR wheel arrangement | A1A-A1A |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) |
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