321 series

{{short description|Japanese train type}}

{{Expand Japanese|date=July 2022|topic=transport}}{{Use dmy dates|date=October 2023}}

{{Infobox train

| name = 321 series

| image = Series321-D11.jpg

| imagesize = 300px

| caption = 321 series set D11 in February 2021

| service = 2005–present

| manufacturer = Kinki Sharyo

| factory = Higashiōsaka

| family =

| replaced = 201 series, 205 series, 207 series (set Z16)

| yearconstruction = 2005–2007

| yearservice = 1 December 2005

| refurbishment =

| yearscrapped =

| numberconstruction =

| numberbuilt = 273 vehicles (39 sets)

| numberservice =

| numberpreserved =

| numberscrapped =

| formation = 7 cars per trainset

| fleetnumbers = D1–D39

| capacity =

| operator = JR-West

| depots = Aboshi

| lines = {{plainlist|

}}

| carbody = Stainless steel

| trainlength = {{convert|136.600|m|ftin|abbr=on}}

| carlength = {{convert|19550|mm|ftin|abbr=on}} (end cars){{Cite web|date=October 2005|title=Electric Equipment of Series 321 Train|url=https://www.toyodenki.co.jp/technical-report/pdf/giho112/s11232.pdf|url-status=live|access-date=8 December 2021|website=toyodenki.co.jp|language=ja|archive-url=https://web.archive.org/web/20171224213624/https://www.toyodenki.co.jp/technical-report/pdf/giho112/s11232.pdf |archive-date=24 December 2017 }}
{{convert|19500|mm|ftin|abbr=on}} (intermediate cars)

| width = {{convert|2950|mm|ftin|abbr=on}}

| height = {{convert|3630|mm|ftin|abbr=on}}

| floorheight =

| doors = 4 pairs per side

| maxspeed = {{convert|120|km/h|mph|abbr=on}}

| weight = {{cvt|232.8|t}}

| acceleration = {{cvt|2.5|km/h/s}}

| deceleration = {{cvt|4.2|km/h/s}} (emergency)

| traction = Variable frequency (2-level IGBT)

| poweroutput = {{cvt|270|kW|0}}

| transmission =

| aux =

| powersupply =

| hvac =

| electricsystem = 1,500 V DC overhead

| collectionmethod = WPS27D scissors-type pantograph

| bogies = WDT63 (powered), WTR246/WTR246A (trailer)

| brakes = Regenerative brake, electronically controlled pneumatic brakes, snow-resistant brake

| safety = ATS-SW, ATS-P

| coupling =

| multipleworking =

| gauge = {{RailGauge|1067mm|lk=on}}

}}

The {{nihongo|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.

Overview

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.{{Cite web|date=8 July 2005|title=321系通勤形直流電車の新製投入|trans-title=Introducing a new 321 series commuter DC train|url=http://www.westjr.co.jp/news/newslist/article/050708a.html|url-status=live|archive-url=https://web.archive.org/web/20050830012749/http://www.westjr.co.jp/news/newslist/article/050708a.html|archive-date=30 August 2005|access-date=8 December 2021|website=westjr.co.jp|language=ja}} 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.

Operations

The 321 series share the same assignments as their 207 series counterparts.{{Cite book|title=JR電車編成表|date=16 November 2016|publisher=交通新聞社|isbn=9784330737164|location=Japan|pages=178|language=ja|trans-title=JR train organization table}}{{Cite journal|last=柴田|first=東吾|date=January 2015|title=JR西日本207系の歩みと現状|trans-title=Railway Fan|journal=鉄道ジャーナル社|language=ja|volume=579|pages=93}} All 39 sets are allocated to Aboshi depot.

Formation

class="wikitable"
Car No.1234567
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 || 156 || 156 || 156 || 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.

Interior

File:JRW series321 indise.jpg|Original interior style in June 2010

File:JR-Series321 Inside.jpg|Interior following changes to seat covers and hanging straps, December 2021

File:JR-Series321 Inside Priority-seat.jpg|Priority seating and free space, December 2021

File:JR-Series321 Inside LCD.jpg|LCD passenger information display

References

{{refbegin}}

  • {{cite book |script-title=ja: JR全車両ハンドブック2006 (JR Rolling Stock Handbook 2006)| publisher = Neko Publishing| year = 2006| location = Japan}}
  • {{cite book |script-title=ja: JR電車編成表 '07冬号 (JR EMU Formations – Winter 2007)| publisher = JRR| date = December 2006| location = Japan| isbn = 978-4-88283-046-7}}

{{refend}}

{{reflist}}