Class EH800
EH800-2 in service in July 2016
Type and origin Power type Electric Builder Toshiba Build date 2012–
Specifications Configuration: ​  • UIC Bo′Bo′+Bo′Bo′ Gauge 1,067 mm (3 ft 6 in) Bogies FD7[1] Wheel diameter 1,120 mm (44 in)[1] Length 25,000 mm (82 ft 0 in)[1] Width 2,808 mm (9 ft 3 in)[1] Loco weight 134.4 t[1] Electric system/s 20/25 kV AC, 50 Hz[1] Loco brake Air and electricalregenerative Train brakes Air Safety systems ATS-SF, ATC-L (DS-ATC)[1]
Performance figures Maximum speed 110 km/h (70 mph)[1] Power output 4 MW (5,400 hp) at 25 kV[1] 3.04 MW (4,080 hp) at 20 kV[2] Tractive effort: ​  • Starting 411.6 kN (92,500 lbf)  • Continuous 240.5 kN (54,100 lbf)[1]
Career Operators JR Freight Number in class 20 (as of 1 March 2017[update]) Delivered January 2013 First run July 2014

TheClass EH800 (EH800形) is aBo′Bo′+Bo′Bo′wheel arrangement multi-voltage AC two-unitelectric locomotive type operated byJapan Freight Railway Company (JR Freight) in Japan hauling freight trains on theKaikyō Line through theSeikan Tunnel separating mainlandHonshu with the northern island ofHokkaido. A prototype locomotive was delivered in January 2013 for evaluation and testing, with full-production locomotives delivered from June 2014, entering service from July 2014.

In order to allowHokkaido Shinkansen services to operate through the dual-gaugeSeikan Tunnel (which commenced on 26 March 2016), the overhead line system voltage was raised from the narrow gauge standard of 20 kV AC to the standard shinkansen power supply of 25 kV AC. A fleet of approximately 20 new dual-voltage locomotives capable of operating under either 20 kV or 25 kV was therefore required to replace theClass ED79 andClass EH500 locomotives previously used to haul freight and overnight sleeping car services through the tunnel.^[3] These locomotives are also compatible with the digitalATC and feature digital train wireless communications.^[3] The total cost of manufacturing the fleet of locomotives together with construction of new maintenance depot facilities was approximately 19 billion yen.^[4] This kind of electric locomotive is modelled on the EH500, which was also manufactured by Toshiba, and therefore has a similar appearance and structure.^[5]: 36

The Bo′Bo′+Bo′Bo′ wheel arrangement locomotives are painted in an all-over red livery with a white bodyside line and silver wavy line.^[6]

The locomotives operate betweenHigashi-Aomori Freight Terminal andGoryōkaku Freight Terminal via theKaikyō Line and Seikan Tunnel.^[4]

• 
  EH800-3 hauling aCassiopeia cruise train in July 2016

Design of the prototype locomotive, EH800-901, began in fiscal 2010,^[4] and the completed locomotive was unveiled to the press at theToshiba factory inFuchū, Tokyo, on 27 November 2012.^[7] It was delivered to JR Freight in Sendai in January 2013.^[8] Following delivery, the prototype locomotive was tested within the confines ofHigashi-Fukushima Station before being moved toGoryōkaku Depot in Hokkaido for testing in winter conditions.^[9]

The first full-production locomotive was delivered in June 2014.^[10] This entered revenue service on 16 July 2014.^[11]

Major overhauls of this train are carried out by the Omiya Comprehensive Vehicle Centre, and traction duties in the DC line area are usually carried out byClass EF210^[12] orClass EF65.^[13]

As of 1 March 2017^[update], 20 Class EH800 locomotives are in service.^[14]

The EH800 classification for this locomotive type is explained below. As with previous locomotive designs, the prototype is numbered EH800-901, with subsequent production locomotives numbered from EH800-1 onward.

• E: Electric locomotive
• H: Eight driving axles
• 800: AC locomotive with AC motors

• Train on Train, a piggy-back concept for transporting freight through the Seikan Tunnel at higher speeds

• Sugiyama, Yoshikazu (April 2014). "EH800交流電気機関車" [Class EH800 AC electric locomotive].Japan Railfan Magazine (in Japanese). Vol. 54, no. 636. Japan: Koyusha Co., Ltd. pp. 72–75.

Wikimedia Commons has media related toJR Freight EH800.

• Toshiba press release (27 November 2012)(in Japanese)

• Electric locomotives of Japan
• Japan Freight Railway Company
• Railway locomotives introduced in 2013
• Toshiba locomotives
• 20 kV AC locomotives
• 25 kV AC locomotives
• 1067 mm gauge locomotives of Japan
• Bo′Bo′+Bo′Bo′ locomotives
• Multi-system locomotives
• Freight locomotives
• Twin unit locomotives

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