JR Freight Class ED500
|Gauge||1,067 mm (3 ft 6 in)|
|Wheel diameter||1,120 mm (3 ft 8 in)|
|Length||17,600 mm (57 ft 9 in)|
|Width||2,905 mm (9 ft 6.4 in)|
|Locomotive weight||67.2 t|
|Electric system(s)||1,500 V DC / 20 kV AC|
|Top speed||120 km/h (75 mph)|
|Power output||4,000 kW (5,400 hp)|
|Tractive effort||28,367 kgf|
The ED500 class consisted of a single Bo-Bo wheel arrangement dual voltage AC/DC electric locomotive built experimentally by Hitachi in Japan. 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 Tōhoku Main Line freight services. The locomotive was loaned to JR Freight for testing, 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 Tōhoku Main Line and in the Seikan Tunnel. The Class EH500 articulated Bo-Bo+Bo-Bo design was ultimately chosen instead.
Visually resembling the EF200 locomotives, the ED500 was finished in all-over black with red cab doors.
- "ＪＲ世代の機関車オールガイド (Comprehensive Guide to JR Era Locomotives)". Tetsudō Daiya Jōhō Magazine (Japan: Kōtsū Shimbun) 39 (315): p.12–26. July 2010.
- JR Freight website (Japanese)