China Railways HXD2
|HXD2 , HXD2B , HXD2C|
HXD2-001 twin unit
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.
The first China built locomotive was produced May 23, 2007.
The main structural component is an integrated welded steel main bean and floor, with load bearing side sills. The side walls are of corrugated metal, and the roof of the locomotive is removable. The structure is designed for loads of 3,600 kN (810,000 lbf) in tension and 2,500 kN (560,000 lbf) in compression. The couplers are designed for up to 4,000 kN (900,000 lbf) force.
The drivers cabins are designed for single driver operation. Driver facilities include a separate air-conditioned/heated area with refrigerator, cooking and washing facilities, and seating and beds.
The locomotives use asynchronous AC electric motor technology, which drives the axles by a nose suspended drive. The bogies are of welded steel construction, with tractive forces transmitted by a low mounted drawbar. The electrical system consists of a transformers based on ABB Group products with 4 windings for electric traction power supply per transformer. Traction inverters are IGBT semiconductor device based, and of the Alstom ONIX type - each traction motor has a separate inverter/rectifier electrical power system. Electrical power for auxiliary devices is supplied via IGBT converters powered from the same intermediate DC power supply used to power the traction motors. Computer control and monitoring systems are from the Alstom AGATE[note 1] product range.
In August 2012 CNR Datong announced the production of a new variant of its twin section, 8 axle, 10MW freight locomotive using domestically produced traction and control systems; the first unit was numbered HXD2-1001. The two first units have corrugated sides, following ones have smooth sides.
From 2014 CNR Dalian delivered 40 HXD2 quite similar to series HXD2-1000.
From 2012 CNR Datong delivered 50 HXD2 quite similar to both first HXD2-1000 at the operator Shenhua Mining. Minor differences in cabin form.
The HXD2B locomotives are designed for heavy freight mainline work, the design is a single body twin cab locomotive with 6 axles in Co'Co wheel arrangement. The body frame, traction motor power electronics and driver facilities are of a similar design as the HXD2. The bogie design differs from the HXD2 using a straight welded steel frame rather than the 'mouth' shaped form used in the HXD2.
An order worth €1.2billion (25% Alstom, 75% Datong) for 500 units was made in 2006. The first 100 units were to be built primarily by Alstom, this number was reduced in 2007 to 10 units. The first china built unit was produced in December 2009. The order is expected to be complete by 2012.
The HXD2C are 6 axle Co'Co' freight locomotives which share a similar exterior design with the HXD2B; the individually inverter controlled traction motors, body structure overall structural design also are the same as other members of the series; with transformers from ABB. The locomotive power is reduced to 7.2 MW (9,700 hp), suitable for trains of 5,000–6,000 tonnes (4,900–5,900 long tons; 5,500–6,600 short tons). The locomotive can be ballasted to give axle loads from 23 to 25 tonnes (22.6 to 24.6 long tons; 25.4 to 27.6 short tons). The HXD2C locomotives are constructed by CNR Datong.
220 units were ordered in 2010 at a cost of over 3 billion Yuan. In May 2010 the first locomotive was produced. Locomotives are expected to be used on the Shijiazhuang–Taiyuan railway line, used for coal trains from Shanxi, with the first train running in December 2010.
In April 2014 two indigenous two-unit (Bo'Bo')-(Bo'Bo') locomotives were unveiled by CNR Datong, nicknamed “超级大力士” (trans. 'Super hercules" or "Super strongman"). The locomotives had an axle load of 27–30 tonnes (27–30 long tons; 30–33 short tons) for higher tractive effort, with power output of 9.6 MW (12,900 hp).
In November 2015 two indigenous two-unit (Bo'Bo')-(Bo'Bo') locomotives were unveiled by CNR Datong. The locomotives had an axle load of 19.5 tonnes (19.2 long tons; 21.5 short tons) for higher speed, with continuous power output of 11.2 MW (15,000 hp). It is designed for 200 km/h, but first used until 160 km/h.
In 2012 CNR Datong supplied the Chinese mining operation, Shenhua Group, with two 9.6 MW (12,900 hp), twin section, 120 kilometres per hour (75 mph), eight-axle locomotives, with traction equipment supplied by Bombardier. The locomotive type is derived from technology used in the 'Harmony' (HXD) series, and has been named "超级大力士", (literal: "Super Strongman").
- China Railways 8K, twin-unit locomotives produced by Alstom for China in the 1980s. see also 8K locomotive (Chinese language)
- List of locomotives in China
- AGATE : Advanced Generic Alstom Transport Electronics
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Alstom announced on June 11 that it had signed an agreement to co-operate in the manufacture of locomotives with CNR Datong Electric Locomotive Co in China..
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In March 2007 it was decided that Belfort would only assemble ten units completely, followed by 190 building kits to be shipped to China. It is still not known to us what the final numbers are concerning the production.
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Propulsion equipment and control system including spare parts for two 9.6MW double Bo-Bo electric locomotives of Datong Electric Locomotive Co., Ltd. to China Shenhua Group (August 2011)Check date values in:
- 李圣 (4 June 2012), 中国北车为神华集团特制火车头"超级大力士"可促运能提升2倍, www.chinacnr.com (in Chinese)