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Specifications
Specifications
Configuration:;
• UIC	Co′Co′
Gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Wheel diameter	new: 1,250 mm (49.2 in); worn: 1,150 mm (45.3 in)
Minimum curve	300 m (984 ft)
Wheelbase	in bogie: 2x1,950 mm (76.8 in)
Length	22,781 mm (74 ft 8.9 in)
Width	2,950 mm (116.1 in)
Height	4,250 mm (167.3 in)
Axle load	25 t (27.6 short tons)
Loco weight	150 t (165 short tons)
Electric system/s	25 kV 50 Hz AC Catenary
Current pickup(s)	Pantograph
Traction motors	Bombardier MITRAC DR 3800 N (1,632 kW (2,190 hp))
Loco brake	regenerative, wheel disc

Type and origin
Type and origin
Power type	Electric
Designer	Bombardier Transportation, CNR Dalian Locomotives
Builder	CNR Dalian Locomotives, Bombardier Transportation
Build date	2008–2011
Total produced	500

HXD3B
和谐3B型电力机车
HXD3B; 和谐3B型电力机车
	HXD3B-0080, Beijing, 2012
Power type
Type and origin
Power type	Electric
Designer	Bombardier Transportation, CNR Dalian Locomotives
Builder	CNR Dalian Locomotives, Bombardier Transportation
Build date	2008–2011
Total produced	500
Configuration:;
Specifications
Configuration:;
• UIC	Co′Co′
Gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Wheel diameter	new: 1,250 mm (49.2 in); worn: 1,150 mm (45.3 in)
Minimum curve	300 m (984 ft)
Wheelbase	in bogie: 2x1,950 mm (76.8 in)
Length	22,781 mm (74 ft 8.9 in)
Width	2,950 mm (116.1 in)
Height	4,250 mm (167.3 in)
Axle load	25 t (27.6 short tons)
Loco weight	150 t (165 short tons)
Electric system/s	25 kV 50 Hz AC Catenary
Current pickup(s)	Pantograph
Traction motors	Bombardier MITRAC DR 3800 N (1,632 kW (2,190 hp))
Loco brake	regenerative, wheel disc
Maximum speed
Performance figures
Maximum speed	120 km/h (75 mph)
Power output	9,600 kW (12,870 hp)
Tractive effort	570 kN (128,000 lbf) starting; 506 kN (114,000 lbf) continuous up to 68.2 km/h (42.4 mph); 292 kN (65,600 lbf) @ 120 km/h (75 mph)
Brakeforce	regenerative: 480 kN (108,000 lbf) @ 72–5 km/h (44.7–3.1 mph)
Operators
Career
Operators	China Railway
Class	HXD3B
Numbers	HXD3B0001-HXD3B0500
Locale	People's Republic of China

The HXD3B (Chinese: 和谐3B型电力机车) is a class of electric locomotives for heavy freight service built by Bombardier Transportation and CNR Dalian Locomotives.

History

The Ministry of Railways of the People's Republic of China (MOR) ordered 500 locomotives in February 2007 for €1.1 billion (US$1.4 billion) from Dalian Locomotives and Bombardier Transportation, with Bombardier's share amounting to €370 million (US$480 million).^[3] The first unit, HXD3B0001 was delivered on 29 December 2008 in Dalian, the entire order of 500 machines will be delivered by the end of 2011.^[4]

Technical details

The HXD3B is based on the Bombardier-produced MTAB Iore twin-section locomotives,^[4]^[5] but is a single-section locomotive with cabs at both ends.^[5] The electronics were updated, with traction converters based on IGCT technology, and an updated version of the MITRAC control electronics developed by Bombardier's Switzerland branch.^[4] With increased power and a maximum speed of 120 km/h (75 mph), the locomotives were designed for general freight rather than specialised heavy-haul service.^[5]

The electronics and traction equipment of the first 150 units were supplied by Bombardier from Europe,^[4] production for the rest is shared between Bombardier's Chinese subsidiary and Dalian.^[3]^[5] The design of the mechanical components was subject to technology transfer from Bombardier to Dalian.^[5]