China Railways HXD2
HXD2-001 twin unit
|
|||||||||||||||||||||||||
|
|||||||||||||||||||||||||
|
|||||||||||||||||||||||||
|
|||||||||||||||||||||||||
|
|||||||||||||||||||||||||
| Type and origin | |
|---|---|
| Power type | Electric |
| Builder |
Alstom (initially) CNR Datong Electric Locomotive / Yongji Xinshisu Electric Equipment ABB traction transformers, |
| Total produced | HXD2 : 180 HXD2.1 : 280 HXD2.6 : 40 HXD2.7 : 50 HXD2B : 500 HXD2C : 220 HXD2F : 2 (as of 2014) |
| Specifications | |
|---|---|
| AAR wheel arr. | HXD2, HXD2F : 2(Bo'Bo') HXD2B, HXD2C : Co'Co' |
| Gauge | 1,435 mm (4 ft 8 1⁄2 in) |
| Minimum curve | 125 m (410 ft) |
| Wheelbase |
bogies : HXD2 : 2.600 m (8 ft 6.4 in) HXD2B, HXD2C : 2.250 m (7 ft 4.6 in) + 2.000 m (6 ft 6.7 in) |
| Length |
coupler distance : HXD2 : 2x19.025 m (62 ft 5.0 in) HXD2B, HXD2C : 22.960 m (75 ft 3.9 in) |
| Width | 2.850 m (9 ft 4.2 in) |
| Loco weight | HXD2: 2x92 t (91 long tons; 101 short tons) (200 t or 200 long tons or 220 short tons*) HXD2B: 150 t (150 long tons; 170 short tons) HXD2C: 138 t (136 long tons; 152 short tons) (150 t or 150 long tons or 170 short tons*) HXD2F : 216 t (213 long tons; 238 short tons) (240 tonnes*) |
| Electric system(s) | 25 kV 50 Hz AC Catenary |
| Current collection | Pantograph |
| Loco brake | Pneumatic dynamic |
| Train brakes | Pneumatic |
| Performance figures | |
|---|---|
| Maximum speed | 120 km/h (75 mph) (operation) |
| Power output | HXD2 : 10 MW (13,000 hp) HXD2B : 9.6 MW (12,900 hp) HXD2C : 7.2 MW (9,700 hp) HXD2F : 9.6 MW (12,900 hp) |
| Tractive effort |
starting : HXD2: 760 kN (170,000 lbf)*, 700 kN (160,000 lbf) HXD2B:584 kN (131,000 lbf) HXD2C: 570 kN (130,000 lbf)*, 520 kN (120,000 lbf) continuous: HXD2B:554 or 514 kN (125,000 or 116,000 lbf) @65 or 70 km/h (40 or 43 mph) (25 or 23t axleoad) HXD2B:455 kN (102,000 lbf) @76 km/h (47 mph) HXD2C : 400 or 370 kN (90,000 or 83,000 lbf) @ 65 or 70 km/h (40 or 43 mph) (25 or 23 t or 25 or 23 long tons or 28 or 25 short tons axleload) |
| Loco brakeforce |
regenerative : HXD2 : 10MW max 473 kN (106,000 lbf) max. HXD2B : 9.6 MW (12,900 hp) max 400 kN (90,000 lbf) max HXD2C : 7.2 MW (9,700 hp) max approximately 400 kN (90,000 lbf) max*. |
The HXD2 locomotives are a series of related locomotive classes built by CNR Datong Electric Locomotive and Alstom. The locomotives designs are based on the Alstom Prima electric locomotives, and are a product of a cooperation agreement signed between the two companies in 2004. All locomotives are intended for heavy freight work, including coal trains on the Datong Qinhuangdao line (Daqin Railway).
The original HXD2 locomotives are twin unit 2(Bo'Bo') vehicles whereas the HXD2B and HXD2C versions are single unit Co'Co' machines. At the time of their construction the HXD2 and HXD2B locomotives were amongst the most powerful locomotives in the world. The HXD2C is similarly specified to the HXD2B but of reduced power, and with increased localisation of components for lower cost.
The HXD2 was originally described as the DJ4-6000 class.
Variants of the type were produced for railways other than China Railways: in 2010 Belarus state railways ordered a HXD2 twin unit locomotive variant (BCG-1); and in 2012 Shenhua Group also ordered twin section locomotives.
In 2012 CNR Datong announced a new sub-version of the HXD2 class, built using fully localised production; the HXD2-1000 series. In 2014 a new localised variant, in 2(Bo'Bo') wheel arrangement and 9.6MW power, with axle load of 27tonnes (up to 30 tonnes on specialised line) was unveiled, designated HXD2F, and officially nicknamed 超级大力士.
The locomotives are designed for heavy haul freight applications (up to 7,000 t or 6,900 long tons or 7,700 short tons train weights), and to be capable of multiple working of three locomotives. The design is also specified for temperatures down to −40 °C (−40 °F).
The locomotive is ballasted to a 25 t (24.6 long tons; 27.6 short tons) axle load - a reduction to 23 t (22.6 long tons; 25.4 short tons) axle load with reduced starting tractive effort is optional.
An (€350 million) order for 180 locomotives was placed (2005), of which the initial 12 would be made in France, then 24 supplied for assembly, the remainder being produced in China. The locomotives are used primarily for coal transportation, specifically on the Datong - Qinhuangdao railway line.
...
Wikipedia