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E993 series
E993 series
	E993 series train on test, June 2004
In service	2002–2006
Manufacturer	Kawasaki Heavy Industries, Tokyu Car Corporation
Constructed	2002
Scrapped	2006
Number built	5 vehicles (1 set)
Formation	5 cars per set
Capacity	Non-passenger
Operators	JR East
Depots	Kawagoe
Specifications
Car body construction	Stainless steel
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)
Doors	3 pairs per side; 2 pairs per side (SaHa E993)
Maximum speed	120 km/h (75 mph)
Power output	200 kW (270 hp) × 2 per motor car
Electric system(s)	1,500 V DC (overhead catenary)
Current collector(s)	Pantograph
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]

Concept

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

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

Articulated cars with shared bogies
Direct drive motors (DDM)
Double-skin body construction
Externally slung sliding doors
Advanced Train Information Management System (AIMS)

Formation

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]

KuHa E992-1
MoHa E992-1
MoHa E993-1
SaHa E993-1
KuHa E993-1

History

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] No cars are preserved.

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.

References

^ ^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.
^ ^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.
^ ^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.
^ "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): 37. July 2007.