JR Freight Class ED500
The Class ED500 was a single Bo-Bo wheel arrangement dual voltage AC/DC electric locomotive built experimentally by Hitachi in Japan in 1992. The design was derived from the DC Bo-Bo-Bo wheel arrangement Class EF200 also built by Hitachi, and was intended to replace Class ED75 locomotives on Tohoku Main Line freight services. The locomotive was loaned to JR Freight for testing until 1994, but the design was not selected for full production due to problems with restarting a single Bo-Bo wheel arrangement locomotive on the 25‰ gradients of the Tohoku Main Line and in the Seikan Tunnel. The Class EH500 articulated Bo-Bo+Bo-Bo design was ultimately chosen instead.
ED500-901 at Shin-Tsurumi Depot, August 1992
The ED500 classification for this locomotive type is explained below. As with previous locomotive designs, the prototype was numbered ED500-901.
- E: Electric locomotive
- D: Four driving axles
- 500: AC/DC locomotive with AC motors
- Jr機関車カタログ: Jr7社の現有30形式を詳しく解說 JR機関車カタログ [JR Locomotive Catalogue]. Japan: Ikaros Publications Ltd. 20 June 2013. p. 43. ISBN 9784863207271.
- ＪＲ世代の機関車オールガイド [Comprehensive Guide to JR Era Locomotives]. Tetsudō Daiya Jōhō Magazine. 39 (315): 12–26. July 2010.