Tobu 10000 series

Tobu 10000 series
Tojo Line 10000 series 10-car set 11006, February 2008
In service	1983–Present
Manufacturer	Alna Kōki, Fuji Heavy Industries, Tokyu Car Corporation
Replaced	7300 series, 3000 series
Constructed	1983–1995
Refurbishment	2007–
Number built	486 vehicles
Formation	2/4/6/8/10 cars per trainset
Operator(s)	Tobu Railway
Depot(s)	Kasukabe, Nanakodai, Shinrinkōen, Shin-Tochigi
Line(s) served	Tobu Skytree Line, Tobu Isesaki Line, Tobu Nikko Line, Tobu Urban Park Line, Tobu Tojo Line
Specifications
Car body construction	Stainless steel
Car length	20,000 mm (65 ft 7 in)
Width	2,850 mm (9 ft 4 in)
Doors	4 pairs per side
Maximum speed	110 km/h (70 mph)
Power output	140 kW x4 per motor car
Acceleration	2.5 km/h/s
Deceleration	4.5 km/h/s (emergency brake)
Electric system(s)	1,500 V DC
Current collection method	Overhead lines
Track gauge	1,067 mm (3 ft 6 in)

The Tobu 10000 series (東武10000系, Tōbu 10000-kei^?) is a commuter electric multiple unit (EMU) train type operated in Japan by the private railway operator Tobu Railway since 1983.

First entering service in 1983 on the Tobu Tojo Line (1984 on the Tobu Isesaki Line), production continued through to 1995, with a total of 486 vehicles built.

The type was broadly divided into four sub-series, as follows.

These were built to replace the remaining 7300 series trains on the Tojo Line, with the first trains entering service from 22 December 1983. 10000 series sets were also introduced on the Isesaki Line from 20 March 1984.

The corrugated stainless steel body design was based on the prototype 9000 series set built in 1981, while the front end design was derived from the earlier 8000 series EMUs. The seat covers were initially brown ("Colorado orange"), but later changed to the standard light green colour used on sets built from 1986.

Sets are configured as 2-, 6-, 8-, and 10-car sets. The four 10-car sets (11003 to 11006) used on the Tojo Line were formed in 1989 by adding two newly built intermediate cars to 8-car sets 11803 to 11806.

Two 2-car sets (11201 and 11202) were transferred to the Tojo Line in May 2008 to augment the two remaining 8-car sets following the decision to run only 10-car formations on the Tojo Line from the start of the June 2008 timetable.

Total number of vehicles built: 118

The M1 and M4 cars are each fitted with two scissors type pantographs.

The M1 cars are each fitted with two scissors type pantographs.

The M1 and M3 cars were originally fitted with two scissors type pantographs, but these were replaced by two single-arm pantographs on the M1 cars and one single-arm pantograph on the M3 cars after refurbishment.

The Mc cars are fitted with two scissors type pantographs.

From 2007, Isesaki Line 10000 series sets began receiving life extension refurbishment similar to that applied to the 9000 series EMUs. This involved new interiors with sculpted seats and dark blue moquette, and the addition of front-end skirts, single-arm pantographs, high-intensity headlights, and full-colour LED destination indicators.