China Railways HXD1
Class of Chinese electric locomotives / From Wikipedia, the free encyclopedia
The HXD1 (Chinese: 和谐1型电力机车) (also known as the DJ4) is an eight axle high power heavy freight twin unit locomotive of axle configuration Bo'Bo'+Bo'Bo'. Both the HXD1 and HXD2 double unit locomotives were designated DJ4, the HXD2 units being disambiguated DJ4-6000.[6]
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The 7.34 billion Yuan order for 180 locomotives was given in 2004, with the first locomotive manufactured by November 2006.[7][8] Production of the 180 locomotives in the class took place between 2006 and 2008.[1][9] A second batch of 40 was delivered between 2009 and 2010.
In 2012 CSR began testing of a revised version of the locomotive, built by using higher levels of domestically sourced equipment.[10] 50 units were delivered (1001 - 1050). Another unit (6001) was built at the end of 2012 by CSR Ziyang using Zhuzhou plans.
In 2013, CSR delivered 2 3xBo'Bo' to Shenhua Group (14.4 MW), directly derived from "normal" HXD1, but with a modernized driver cab.[11] The same operator ordered 8 2xBo'Bo' in the first quarter 2013.[12] These locomotives are dubbed the "Shenhua" Series.
In 2020, CRRC produced a 6xBo'Bo' for China Energy Investment the parent holding company of Shenhua Group.[13][14] With a power output of 28.8 MW it is regarded as the worlds most powerful multi-segment electric locomotive.[15][16] These locomotives are dubbed the "Shenhua 24" Series.[17]