| Keisei 3500 series | |
| Manufacturer: | Nippon Sharyo, Kawasaki Heavy Industries and Tokyu Car Corporation |
| Yearconstruction: | 1972–1982 |
| Yearservice: | 1972 |
| Refurbishment: | 1996–2001 |
| Numberbuilt: | 96 vehicles (24 sets) |
| Numberservice: | 56 vehicles (13 sets) |
| Numberscrapped: | 40 vehicles |
| Formation: | 8/6/4 cars per set |
| Operator: | Keisei Electric Railway |
| Lines: | Keisei Main Line, Toei Asakusa Line |
| Carbody: | Stainless steel |
| Doors: | 3 pairs per side |
| Maxspeed: | 110abbr=onNaNabbr=on |
| Traction: | Resistor control |
| Electricsystem: | 1,500 V DC overhead catenary |
| Collectionmethod: | Single-arm pantograph |
The is a commuter electric multiple unit (EMU) train type operated by the private railway operator Keisei Electric Railway in the Tokyo area of Japan since 1972.[1]
The 3500 series sets operate on the Keisei Main Line.[1] The eight-car sets were also used on Toei Asakusa Line and Keikyu line inter-running services until they were split into individual four-car sets in 2014, although the unrefurbished sets were not capable of operating on Keikyu lines.[1]
Originally built as 24 four-car sets, the fleet was subsequently reformed into eight-, six-, and four-car sets.[1]
, the fleet consists of 56 vehicles formed as four six-car sets and nine four-car sets.[2]
The six-car sets are formed as shown below. All cars are motored.[2]
| Designation | M2 | M1' | M2 | M1' | M1' | M2 |
|---|
| Designation | M2 | M1' | M1' | M2 | M1' | M2 |
|---|
The M1' cars are each fitted with one single-arm pantograph.[2]
The four-car sets are formed as shown below. All cars are motored.[2]
| Designation | M2 | M1' | M1' | M2 |
|---|
The M1' cars are each fitted with one single-arm pantograph.[2]
Four eight-car sets were formed as shown below. All cars were motored.[3]
| Designation | M2 | M1' | M1' | M2 | M2 | M1' | M1' | M2 |
|---|
The M1' cars are each fitted with one single-arm pantograph.[3]
Seating consists of longitudinal bench seating throughout.[1]
Major refurbishment of the fleet commenced in 1996, with a total of 56 vehicles refurbished by 2001.[1] Refurbishment involved redesigned front ends with square lights instead of round and upgraded interiors.[4]
Special farewell tours were staged for the last remaining unrefurbished 3500 series set, 3585, on 25 and 26 February 2017.[5]