China Railways HXD1

HXD1

HXD1 0004
Type and origin
Power type Electric
Builder Zhuzhou Electric Locomotive Company Limited , Siemens
Build date 2006-2012[1]
Total produced 271[2]
Specifications
UIC classification 2 (Bo'Bo')
Gauge 1,435 mm (4 ft 8 1⁄2 in)
Wheel diameter 1.250 m (4 ft 1.2 in)[3]
Wheelbase bogie centre distance 9 m (29 ft 6 in)[3]
bogie axle distance 2.8 m (9 ft 2 in)[4]
Length 35.222 m (115 ft 6.7 in)[4]
Width 3.247 m (10 ft 7.8 in)[3]
Locomotive weight 184 t (181 long tons; 203 short tons) (200 t or 200 long tons or 220 short tons[nb 1])[3]
Electric system(s) 25 kV 50 Hz AC Catenary[3]
Current collection
method		 Pantograph
Performance figures
Maximum speed 120 km/h (75 mph)[3]
Power output 9.6 MW (12,900 hp) (continuous)[3]
Tractive effort max. 700 kN (160,000 lbf) (μ =0.39) (760 kN or 170,000 lbf[nb 1])[3]
continuous
494 kN (111,000 lbf) @70 km/h (43 mph)[5]
Locomotive brake Pneumatic and dynamic[5]
Locomotive
brakeforce		 Dynamic:
(9.6 MW or 12,900 hp maximum)[5]
max.461 kN (104,000 lbf)
continuous 461 to 288 kN (104,000 to 65,000 lbf) @75 to 120 km/h (47 to 75 mph)[5]
  1. ↑ 1.0 1.1 when ballasted to 25 t axleload for extra traction

The China Railways HXD1 also sometimes known as the DJ4[note 1] is an eight axle high power heavy freight twin unit locomotive of axle configuration Bo'Bo'+Bo'Bo'.

The 7.34billion Yuan order for 180 locomotives was given in 2004, with the first locomotive manufactured by November 2006.[6][7] Production of the 180 locomotives of the class took place between 2006 and 2008.[1][8] A second batch of 40 was delivered between 2009 and 2010.

In 2012 CSR began testing of a revised version of the locomotive, built using higher levels of domestically sourced equipment.[9] 50 pieces on delivery (1001 - 1050). Another machine (6001) was built at end of 2012 by CSR Ziyang on plans of Zhuzhou.

In 2013, CSR delivered 2 3xBo'Bo' at Shenhua Mining Group (14,4 MW), directly issued from "normal" HXD1, but with modernized frontcab. (not added at "total production" in th upper frame).[10] Same operator ordered 8 2xBo'Bo' on first quarter 2013.[11]

Background and design

The HXD1 locomotives are based on the Siemens' EuroSprinter derived design of the China Railways DJ1 locomotive.[3]

Construction of the locomotives was carried out by Zhuzhou Electric Locomotive Company Limited. The locomotive consists of two identical single cab Bo'Bo' units coupled together, the main locomotive body is load bearing, electric traction equipment uses an AC/DC-AC transmission chain, with the traction motors being three phase asynchronous devices. The electrical inverter for traction motor power control is an IGBT type. The traction control system is a Siemens SIBA32, vehicles can also be operated in multiple using Locotrol distributed traction control system.[12]

The machines have a pneumatic disc brake, as well as being able to brake regeneratively. Standard operating speed is 70 km/h (43 mph)[12] or 65 km/h (40 mph) when ballasted to 25t axleload.[4]

Operations

The locomotives were built for heavy coal trains; in particular the Datong to Qinhuangdao line (Daqin Railway).[7] On the Daqin line the locomotives can operate in pairs both doubled headed and distributed along the train.[13]

See also

Notes

  1. ↑ Both the HXD1 and HXD2 double unit locomotives were designated DJ4, the HXD2 units being disambiguated DJ4-6000. Source: HXD2 electric locomotive news.chineserailways.com

References

  1. ↑ 1.0 1.1 Yankun Hou; Paul Gong (14 October 2010), Railway equipment China, Nomura, p. 3
  2. ↑ "High Power AC Electric Freight Locomotive HXD1" (PDF), www.mobility.siemens.com (Siemens)
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 More mega locos join the Chinese coal traction fleet , 1 August 2007 , www.railwaygazette.com
  4. ↑ 4.0 4.1 4.2 HXD1型大功率交流传动电力机车 (HXD1-type high-power AC drive electric locomotives) , CSR Zhuzhou Electric Locomotive Co., Ltd. , www.gofront.com
  5. ↑ 5.0 5.1 5.2 5.3 Jean-Marc Allenbach, "BoBo+BoBo CR HXD1 (Spec Sheet)" (PDF), documents.epfl.ch (in French)
  6. ↑ 全球最大功率交流传动电力机车在湖南株洲下线 The world's largest power AC electric locomotives off the assembly line in Zhuzhou, Hunan , 9 November 2006 , news.xinhuanet.com
  7. ↑ 7.0 7.1 Locomotives Reference List Electric Double Locomotive HXd1 for Chinese Railways CR www.transportation.siemens.com
  8. ↑ "Introduction: CSR Zhuzhou Electric Locomotive Co., Ltd.". www.gofront.com. ZELC has completed the contract of high power HXD1 AC drive 8-axle (9600kW) electric locomotives awarded by Ministry of Railway, China, which was obtained together with Siemens in the end of 2004
  9. ↑ "Prototype heavy haul locomotive on test", www.railwaygazette.com, 6 June 2012
  10. ↑ 神华新型八轴大功率交流电力机车上线试运行. 国务院国资委. 2013-01-17 [2013-01-15].
  11. ↑ 朔黄铁路公司新购电力机车全部上线运行. 新华网河北频道. 2013-02-19 [2013-02-22]
  12. ↑ 12.0 12.1 "HXD1型大功率交流传动电力机车", www.gofront.com (CSR Zhuzhou Electric Locomotive Co., Ltd.), retrieved March 2012
  13. ↑ Beijing and Jixi, March 2010 www.railwaysofchina.com

External links

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