Keio 8000 series

Keio 8000 series
Keio 8000 series
	10-car set 8714 in November 2017
In service	11 May 1992 – Present
Manufacturer	Nippon Sharyo, Tokyu Car Corporation
Replaced	5000 series
Constructed	1992 – 1999, 2009
Refurbished	2013 – 2019 (4-car and 6-car sets merged permanently by removing the cab of the 2 inner ends); 2013 – Present (traction system replacement)
Scrapped	2009
Number built	245 cars (41 sets + 1 car)
Number in service	244 cars (27 sets)
Number scrapped	1 car (8728(I), accident damage)
Formation	8/10 cars per trainset (4/6/8 before remodeling); Tc1+M1+M2+Tc2; Tc1+M1+M2+M1+M2+Tc2; Tc1+M1+M2+T1+T2+M1+M2+Tc2; Tc1+M1+M2+M1+M2+T1+T2+M1+M2+Tc2
Fleet numbers	8701 – 8714 (10-car sets); 8721 – 8733 (8-car sets); Before remodeling:; 8801 – 8814 (4-car sets); 8701 – 8714 (6-car sets); 8721 – 8733 (8-car sets)
Capacity	143 (end cars); 154/155 (intermediate cars)
Operator(s)	Keio Corporation
Depot(s)	Wakabadai, Takahatafudō
Specifications
Car body construction	Ivory painted steel (cab ends); Stainless steel (body)
Car length	20,000 mm (full length); 19,500 mm (body length)
Width	2,845 mm (full width); 2,770 mm (body width)
Height	4,055 mm (car without pantograph); 4,100 mm (car with pantograph)
Entry	Level
Doors	4 pairs of sliding doors per side
Wheel diameter	860 mm
Wheelbase	2200 mm (motored bogie); 2100 mm (trailer bogie)
Maximum speed	110 km/h (service); 120 km/h (design)
Weight	131 t (4-car sets); 204 t (6-car sets); 259 t (8-car sets)
Traction system	At the time of manufacture; Hitachi 2-level VVVF (GTO switching device); 10-car sets: 8703, 8705, 8708, 8711, 8713, 8714; 8-car sets: 8728, 8731, 8732, 8733; ; After refurbishment; 2013~ :; Hitachi 2-level VVVF (silicon carbide hybrid module: Si-IGBT SiC-SBD switching device); 10-car sets: 8701, 8702, 8704, 8706, 8707, 8709, 8710, 8712; 8-car sets: 8730 (8030-8080 motor group only, then full set from April 2015), 8729 (8129-8179 motor group only, from March 2015 until April 2015); ; 2013~ :; Toshiba 2-level VVVF (IGBT switching device); 8-car sets: 8730 (8130-8180 motor group only, until April 2015), 8729 (8029-8079 motor group only, from March 2015, then full set from April 2015), 8721, 8722, 8723, 8724, 8725, 8726, 8727; ; Note: In April 2015, in order to unify control systems, cars 8130 and 8180 were swapped and renumbered with cars 8129 and 8179 respectively. Hence set 8730 got Hitachi only equipment and set 8729 Toshiba only equipment.
Traction motors	At the time of manufacture; Toyo Denki / Hitachi 3-phase squirrel-cage induction motor; 10-car sets: 8703, 8705, 8708, 8711, 8713, 8714; 8-car sets: 8728, 8731, 8732, 8733; ; After refurbishment; 2013~ :; Hitachi totally enclosed 3-phase squirrel-cage induction motor; 10-car sets: 8701, 8702, 8704, 8706, 8707, 8709, 8710, 8712; 8-car sets: 8730 (8030-8080 motor group only, then full set from April 2015), 8729 (8129-8179 motor group only, from March 2015 until April 2015); ; 2013~ :; Toshiba permanent-magnet synchronous motor; 8-car sets: 8730 (8130-8180 motor group only, until April 2015), 8729 (8029-8079 motor group only, from March 2015, then full set from April 2015), 8721, 8722, 8723, 8724, 8725, 8726, 8727
Power output	150 kW x4 per motored car
Transmission	Motor mounted on bogie frame, Westinghouse-Natal joint, gear wheels (parallel-axis drive); Gear ratio: 85:14 = 6.07
Acceleration	3.3 km/h/s (after high acceleration modification); 2.5 km/h/s (at the time of appearance)
Deceleration	3.5 km/h/s (full-service braking); 4.0 km/h/s (emergency braking)
Auxiliaries	Electric air compressor; Reciprocating type (HS-20D), 2,130 ℓ/min flow rate; In most of remodeled 10-car sets:; Rotary-screw type (RWS20J), 1,600 ℓ/min flow rate;
Power supply	Static converter; 4/6-car sets: 200 V AC, 130 kVA; 8-car sets: 200 V AC, 190 kVA; Remodeled 10-car sets: 200 V AC, 250 kVA
Train heating	One central rooftop air-cooling unit per car (42,000 kcal/h, 48.84 kW). Heaters beneath seats
Electric system(s)	1,500 V DC overhead catenary
Current collection method	Diamond-shaped pantograph (PT-4201); Single-arm pantograph (PT-7110) (After replacement, which lasted from 1998 to around 2005)
UIC classification	2'2'+Bo'Bo'+Bo'Bo'+2'2'; 2'2'+Bo'Bo'+Bo'Bo'+Bo'Bo'+Bo'Bo'+2'2'; 2'2'+Bo'Bo'+Bo'Bo'+2'2'+2'2'+Bo'Bo'+Bo'Bo'+2'2'; 2'2'+Bo'Bo'+Bo'Bo'+Bo'Bo'+Bo'Bo'+2'2'+2'2'+Bo'Bo'+Bo'Bo'+2'2'
Bogies	TS-823A (motored bogie); TS-824 (trailer bogie); Axle box suspension: pedestal swing spring type (axle guard with single spring). Secondary suspension: pneumatic (rubber diaphragm air spring) mounted directly below car body and above bolster; Double shoe brake (clasp brake) on all wheels; ; Sets 8732 and 8733 only:; TS-1017 (motored bogie); TS-1018 (trailer bogie); Axle box suspension: axle beam type. Secondary suspension: pneumatic (rubber diaphragm air spring), bolsterless; One tread brake unit (TBU) per wheel (bogie center side). Same bogies as 9000 series
Braking system(s)	Electronically controlled pneumatic brakes with regenerative braking
Safety system(s)	Keio ATC
Coupling system	Shibata coupler
Headlight type	A pair of white headlights, red tail lights and white [ja] on each cab; Sealed beam (LED after replacement)
Track gauge	1,372 mm (4 ft 6 in)
Seating	Seating arrangement (intermediate cars): 4-7-7-7-4 on longitudinal bench seats (440 mm wide, bucket style)
Notes
	The fleet situation showed in traction system and traction motors sections is given as of 6 May 2021

The Keio 8000 series (京王8000系) is an electric multiple unit (EMU) train type operated by the private railway operator Keio Corporation on commuter services in the Tokyo area of Japan since 1992.

Technical details[]

Driver's cab

MT ratio
- 0 subseries:
  - six-car set: 4M2T (4 motor cars and 2 trailers, motor cars have 4 motors)
  - four-car set: 2M2T
- 20 subseries: eight-car set: 4M4T
Motor output: 150 kilowatts (200 hp)
Gear ratio: 6.07
Drive mechanism: Parallel cardan
Control system: GTO-VVVF
Headlights: Sealed beam
Destination indicators: roller-blind or 3-color LED
Passenger information displays: 3-color LED (4 per car)
Seating arrangement (intermediate cars): 4-7-7-7-4 on longitudinal bench seats

Body[]

The body is stainless steel. The front is steel.

Driver's cab[]

"T" shape one handle master-controller system. Digital speedometer. TNS (Train Navigation System).

Acceleration: 4 notch
Deceleration: 7 notch + emergency

Formations[]

As of 1 April 2015, the fleet consists of 14 ten-car sets and 13 eight-car sets (244 vehicles in total), formed as follows.^[8]

c=Driver's cab; T=trailer, M=motor

0-subseries ten-car sets[]

← Shinjuku 　　　　　　　　　　　　　　　　　　　　　 Keio-Hachiōji →
Tc	M	M	M	M	T		T	M	M	Tc
8701	8001	8051	8101	8151	8751	+	8801	8201	8251	8851
\|	\|	\|	\|	\|	\|		\|	\|	\|	\|
8713	8013	8063	8113	8163	8763	+	8813	8213	8263	8863
8714	8014	8064	8114	8164	8514		8564	8214	8264	8864

20-subseries eight-car sets[]

← Shinjuku 　　　　　　　　　　　　　　 Keio-Hachiōji →
Tc	M	M	T	T	M	M	Tc
8721	8021	8071	8521	8571	8121	8171	8771
\|	\|	\|	\|	\|	\|	\|	\|
8733	8033	8083	8533	8583	8133	8183	8783

Interior[]

Interior of car in original condition
Priority seats of car in original condition
Interior of a refurbished car
Priority seats of a refurbished car

History[]

The first 8000 series trains were introduced in 1992.^[9]

Six-car and four-cars sets (and occasionally a pair of four-car sets) used to be operated on splitting services which separated and re-joined at Takahatafudō Station until 2006. Now, all six-car and four-car 0-subseries sets are permanently formed as 10-car trains.^[9]

The 8000 series trains are used exclusively on Keio Corporation lines. Unlike some other Keio trains, they do not continue past Shinjuku on to the Toei Shinjuku Line.

Special liveries[]

Set 8713 received a special all-over green livery in September 2009 evoking the livery carried by the former 2000 series trains.^[10]

Set 8713 in special all-over green livery in August 2016

References[]

^ https://rail.hobidas.com/bogie/archives/2008/02/ts823ats824_800.html
^ https://rail.hobidas.com/bogie/archives/2008/02/ts823ats824_800.html
^ http://vvvfdatabase.starfree.jp/vvvf_data/keio.html
^ http://vvvf.xsrv.jp/vvvf/hitachi-hybsic.html
^ http://vvvfdatabase.starfree.jp/vvvf_data/keio.html
^ http://vvvfdatabase.starfree.jp/vvvf_data/keio.html
^ https://rail.hobidas.com/bogie/archives/2008/02/ts823ats824_800.html
^ 私鉄車両編成表 私鉄車両編成表 2015 [Private Railway Rolling Stock Formations - 2015] (in Japanese). Japan: Kotsu Shimbunsha. 23 July 2015. ISBN 978-4-330-58415-7.
^ Jump up to: ^a ^b 私鉄車両年鑑 2013: 大手15社営業用車両完全網羅 私鉄車両年鑑2013 [Japan Private Railways Annual 2013] (in Japanese). Tokyo, Japan: Ikaros Publications Ltd. 20 March 2013. p. 153. ISBN 978-4-86320-693-9.
^ 高尾山をイメージしたラッピング車両を運行 [Train to run with wrapping livery with Mt Takao theme] (PDF). News release (in Japanese). Japan: Keio Corporation. 24 September 2015. Archived (PDF) from the original on 6 October 2017. Retrieved 6 October 2017.

[1] ttps://rail.hobidas.com/bogie/archives/2008/02/ts823ats824_800.html

[2] ttps://rail.hobidas.com/bogie/archives/2008/02/ts823ats824_800.html

[3] ttp://vvvfdatabase.starfree.jp/vvvf_data/keio.html

[4] ttp://vvvf.xsrv.jp/vvvf/hitachi-hybsic.html

[5] ttp://vvvfdatabase.starfree.jp/vvvf_data/keio.html

[6] ttp://vvvfdatabase.starfree.jp/vvvf_data/keio.html

[7] ttps://rail.hobidas.com/bogie/archives/2008/02/ts823ats824_800.html

[jrrprivate2015-8] 私鉄車両編成表 私鉄車両編成表 2015 [Private Railway Rolling Stock Formations - 2015] (in Japanese). Japan: Kotsu Shimbunsha. 23 July 2015. ISBN 978-4-330-58415-7.

[private2013-9] Jump up to: ^a ^b 私鉄車両年鑑 2013: 大手15社営業用車両完全網羅 私鉄車両年鑑2013 [Japan Private Railways Annual 2013] (in Japanese). Tokyo, Japan: Ikaros Publications Ltd. 20 March 2013. p. 153. ISBN 978-4-86320-693-9.

[keio20150924-10] 高尾山をイメージしたラッピング車両を運行 [Train to run with wrapping livery with Mt Takao theme] (PDF). News release (in Japanese). Japan: Keio Corporation. 24 September 2015. Archived (PDF) from the original on 6 October 2017. Retrieved 6 October 2017.

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