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321 series | |
---|---|
In service | 2005–present |
Manufacturer | Kinki Sharyo |
Built at | Higashiōsaka |
Replaced | 201 series, 205 series, 207 series (set Z16) |
Constructed | 2005–2007 |
Entered service | 1 December 2005 |
Number built | 273 vehicles (39 sets) |
Formation | 7 cars per trainset |
Fleet numbers | D1–D39 |
Operators | JR-West |
Depots | Aboshi |
Lines served | |
Specifications | |
Car body construction | Stainless steel |
Train length | 136.600 m (448 ft 2.0 in) |
Car length | 19.55 m (64 ft 2 in) (end cars)
[1] 19.5 m (64 ft 0 in) (intermediate cars) |
Width | 2,950 mm (9 ft 8 in) [1] |
Height | 3,630 mm (11 ft 11 in) [1] |
Doors | 4 pairs per side |
Maximum speed | 120 km/h (75 mph) |
Weight | 232.8 t (513,236 lb) [1] |
Traction system | Variable frequency (2-level IGBT) [1] |
Power output | 270 kW (362 hp) |
Acceleration | 2.5 km/(h⋅s) (1.55 mph/s) |
Deceleration | 4.2 km/(h⋅s) (2.61 mph/s) (emergency) |
Electric system(s) | 1,500 V DC overhead [1] |
Current collector(s) | WPS27D scissors-type pantograph |
Bogies | WDT63 (powered), WTR246/WTR246A (trailer) |
Braking system(s) | Regenerative brake, electronically controlled pneumatic brakes, snow-resistant brake |
Safety system(s) | ATS-SW, ATS-P |
Track gauge | 1,067 mm (3 ft 6 in) |
The 321 series (321系, 321-kei) is a DC electric multiple unit (EMU) commuter train type operated by West Japan Railway Company (JR-West) in the Kansai Region of Japan.
The 321 series was developed from the earlier 207 series to replace the ageing 201 series and 205 series trains on the Tōkaidō Main Line. [2] One 321 series set also replaced the 207 series (set Z16) withdrawn due to collision damage sustained in the Amagasaki derailment of 25 April 2005.
The 321 series share the same assignments as their 207 series counterparts. [3] [4] All 39 sets are allocated to Aboshi depot.
Car No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
---|---|---|---|---|---|---|---|
Designation | M'c | M | T | M' | M | M' | Mc |
Numbering | KuMoHa 320 | MoHa 321 | SaHa 321 | MoHa 320 | MoHa 321 | MoHa 320 | KuMoHa 321 |
Capacity | 142 | 156 | 142 | ||||
Weight | 35.1 t | 34.1 t | 27.3 t | 33.3 t | 34.1 t | 33.3 t | 35.6 t |
KuMoHa 321 and MoHa 321 cars each have two scissors-type pantographs.