E993 series

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E993 series
Jreast e993.jpg
E993 series train on test, June 2004
In service 2002–2006
Manufacturer Kawasaki Heavy Industries, Tokyu Car Corporation
Scrapped 2006
Number built 5 vehicles (1 set)
Number scrapped 5 vehicles (1 set)
Formation 5 cars per set
Operator(s) JR East
Depot(s) Kawagoe
Car body construction Stainless steel/aluminium
Car length 16,050 mm (52 ft 8 in) (end cars), 13,000 mm (42 ft 8 in) (intermediate cars)
Width 3,000 mm (9 ft 10 in)
Height 3,640 mm (11 ft 11 in)
Floor height 1,150 mm (3 ft 9 in)
Maximum speed 120 km/h (75 mph)
Power output 200kW x2 per motor car
Electric system(s) 1,500 V DC
Current collection method Overhead catenary
Safety system(s) ATC, ATS-P, ATS-SN
Track gauge 1,067 mm (3 ft 6 in)

The E993 series (E993系) "AC Train" was an experimental 5-car electric multiple unit (EMU) train operated by East Japan Railway Company (JR East) in Japan between 2002 and 2006.[1][2]


The E993 series "AC Train" ("Advanced Commuter Train") was developed by JR East to test and evaluate a number of new technologies and features for possible use in future commuter train designs.[1] These included features intended to reduce life-cycle costs, improve the interior passenger environment, improve accessibility, and increase environmental friendliness.[2]

Technological features[edit]

The train incorporated the following features for evaluation.[2]


The 5-car articulated set was based at Kawagoe Depot on the Kawagoe Line and formed as shown below, with car 1 at the Kawagoe end, and car 5 at the Shinjuku end.[3] Cars 1 and 2 were built by Kawasaki Heavy Industries in Kobe, and cars 3 to 5 were built by Tokyu Car Corporation in Yokohama.[2]

Car No. 1 2 3 4 5
Designation Tc' M' M T Tc
Numbering KuHa E992-1 MoHa E992-1 MoHa E993-1 SaHa E993-1 KuHa E993-1

Cars 2 and 4 were each fitted with one single-arm pantograph.[3]

Cars 1 and 2 had double-skin aluminium bodies, cars 3 to 5 had stainless steel bodies with double-skin construction used for cars 3 and 5.[2]


The E993 series train being hauled to Koriyama Works for scrapping, July 2006

The train was delivered to JR East's Kawagoe Depot on 17 January 2002.[2] Test running commenced on the Kawagoe Line and Saikyo Line the following month.[2]

The train was officially withdrawn on 14 July 2006.[4]

Features tested on the E993 series, including articulated cars and direct drive motors, were subsequently incorporated in the E331 series prototype train delivered in 2006.


  1. ^ a b JR全車輌ハンドブック2005 [JR Rolling Stock Handbook 2005]. Japan: Neko Publishing. August 2005. p. 374. ISBN 978-4-7770-0382-2. 
  2. ^ a b c d e f g プロトタイプの世界 - Prototype World. Japan: Kōtsū Shimbunsha. December 2005. pp. 76–79. 
  3. ^ a b JR電車編成表 '05冬号 [JR EMU Formations - Winter 2005]. Japan: JRR. January 2005. p. 66. ISBN 978-4-88283-042-9. 
  4. ^ "JRグループ車両のデータバンク2006/2007" [JR Group Databank 2006/2007]. Japan Railfan Magazine. 47 (555): Appendix p.37. July 2007.