Big X
The 183 series trains operated by JR-West were actually DC-only conversions of 485 series trainsets. They were used on limited-express services from Kyoto and Shin-Osaka to the northern coast of Kyoto and Hyogo prefectures, as part of the "Kitakinki Big X Network". These trainsets were gradually phased out from spring 2011 in favor of the new 287 series, and completely removed from regular scheduled services by the start of the revised timetable on 16 March 2013.