Alstom Metropolis C830
{{short description|Class of electric multiple units in Singapore}}
{{Infobox train
| name = {{SMRT Rolling Stock Infobox Colour
| enname = Alstom Metropolis C830
| line = Circle
}}
| image = 2 C830 in KCD.JPG
| caption = C830 trains at Kim Chuan Depot
| interiorimage = SMRT C830 interior.jpg
| interiorcaption = Interior of the Alstom Metropolis C830 on the Circle line.
| stocktype = Electric multiple unit
| service = {{Start date and age|df=yes|2009|05|28}} – present
| manufacturer = Alstom
| designer =
| factory = Valenciennes, France
| family = Metropolis
| replaced =
| yearconstruction = 2006 – 2008
| yearservice = {{Start date and age|df=yes|2009|05|28}}
| refurbishment =
| yearretired =
| yearscrapped =
| numberconstruction =
| numberbuilt = 120 Vehicles (40 Sets)
| numberservice = 120 Vehicles (40 Sets)
| numberpreserved =
| numberscrapped =
| successor =
| formation = 3 per trainset
Mc1–T–Mc2
| fleetnumbers = 801 – 840
| capacity = 931 passengers (148 seats)
| operator = SMRT Trains (SMRT Corporation)
| depots = Kim Chuan
| lines = {{rint|sg|cc}} Circle line
| carbody = Welded aluminium
| trainlength = {{convert|70.1|m|ftin|frac=8|abbr=on}}
| carlength = {{plainlist|
- {{convert|23.65|m|ftin|frac=8|abbr=on}} (Mc)
- {{convert|22.8|m|ftin|frac=8|abbr=on}} (T)
}}
| width = {{convert|3.21|m|ftin|frac=8|abbr=on}}
| height = {{convert|3.68|m|ftin|frac=8|abbr=on}}
| floorheight = {{convert|1,110|mm|in|frac=8|abbr=on}}
| platformheight =
| entrylevelorstep =
| doors = {{convert|1450|mm|in|frac=8|abbr=on}}, 8 per car, 4 per side
| art-sections =
| wheeldiameter = {{convert|850|–|775|mm|in|abbr=on}}
| wheelbase = {{convert|2.5|m|ftin|abbr=on}}
| maxspeed = {{plainlist|
- {{convert|90|km/h|abbr=on}} (design)
- {{convert|78|km/h|abbr=on}} (service)
}}
| weight = {{plainlist|
- {{convert|120|t|abbr=on}} (unladen)
- {{convert|199|t|abbr=on}} (fully laden)
}}
| axleload = {{convert|16|t|abbr=on}}
| traction = Alstom ONIX IGBT–VVVF
| engine =
| traction motors = 8 × Alstom 4LCA 2138{{cite web |url=http://www.alstom.com/Global/Transport/Resources/Documents/brochure2014/Alstom%20Motors%20Catalogue%202015%20-%20English.pdf |title=Alstom Motors Catalogue 2015 – English |publisher=Alstom |access-date=4 November 2023 |archive-url=https://web.archive.org/web/20180627005859/http://www.alstom.com/Global/Transport/Resources/Documents/brochure2014/Alstom%20Motors%20Catalogue%202015%20-%20English.pdf |archive-date=27 June 2018}} {{convert|150|kW|abbr=on}} asynchronous 3-phase AC
| poweroutput = {{convert|1.2|MW|abbr=on}}
| transmission =
| acceleration = {{convert|1.1|m/s2|mph/s|abbr=on}}
| deceleration = {{convert|1.3|m/s2|mph/s|abbr=on}} (Emergency)
| aux =
| powersupply =
| electricsystem = {{750 V DC|conductor=y}}
| collectionmethod = Collector shoe
| uicclass = Bo′Bo′+2′2′+Bo′Bo′
| bogies = Alstom B25{{cite web |url=http://www.alstom.com/Global/Transport/Resources/Documents/brochure2014/Alstom%20Bogies%20Catalogue%202015%20-%20English.pdf?epslanguage=en-GB |title=Alstom Bogies Catalogue 2015 – English |publisher=Alstom |access-date=4 November 2023 |archive-url=https://web.archive.org/web/20150921232307/http://www.alstom.com/Global/Transport/Resources/Documents/brochure2014/Alstom%20Bogies%20Catalogue%202015%20-%20English.pdf?epslanguage=en-GB |archive-date=21 September 2015}}
| brakes = Regenerative and pneumatic
| safety = Alstom URBALIS 300 moving block CBTC ATC under ATO GoA 4 (UTO), with subsystems of ATP, Iconis ATS and Smartlock CBI{{Cite web |title=Singapore Northeast Line: will soon be the largest, fully automatic metro system in the world |url=http://tsdtemp.turnlav.net/cbtc/projects/SIG_Singapore_AutomaticMetro_en.pdf |url-status=live |archive-url=https://web.archive.org/web/20200615162321/http://tsdtemp.turnlav.net/cbtc/projects/SIG_Singapore_AutomaticMetro_en.pdf |archive-date=15 June 2020 |access-date=16 June 2020 |pages=4 to 8}}{{Cite web |title=URBALIS Evolution: Controlling the Performance |url=http://www.sanprotechwriting.com/translation/URBALIS_May14_rev.pdf |url-status=live |archive-url=https://web.archive.org/web/20200615162738/http://www.sanprotechwriting.com/translation/URBALIS_May14_rev.pdf |archive-date=15 June 2020 |access-date=16 June 2020 |page=4}}
| coupling = Scharfenberg
| multipleworking =
| light =
| gauge = {{Track gauge|sg|allk=on}}
}}
The Alstom Metropolis C830 is the first generation of communication-based train control (CBTC) electric multiple unit rolling stock in operation on the Circle line of Singapore's Mass Rapid Transit (MRT) system since 2009. Alstom was contracted in 2000 (as part of turnkey Contract C830) by the Land Transport Authority (LTA) in Singapore to supply the trains for the Circle line.
Operational history and overview
Despite being similar to the fully underground North East line, the decision was made to power the three-car trains along the Circle line by third rail instead of overhead catenary. 40 trainsets of three cars each were purchased for the Circle line. For the train's tender, Alstom was awarded the contract on 28 December 2000, beating seven pre-qualified contractors.{{cite web |title=Award of Electrical and Mechanical Systems Contract 830 for the Marina Line |url=http://app.internet.gov.sg/scripts/lta/3_press_content.asp?start=172 |website=LTA |access-date=29 May 2022 |archive-url=https://web.archive.org/web/20010701062516fw_/http://app.internet.gov.sg/scripts/lta/3_press_content.asp?start=172 |archive-date=1 July 2001 |date=28 December 2000}}
The front of the train features an extra window cut into the emergency exit door unlike the C751A trains, giving passengers a view of the tunnel.{{Cite web|url=https://www.lta.gov.sg/content/ltaweb/en/public-transport/projects/circle-line/features.html|title=Features {{!}} Circle Line {{!}} Projects {{!}} Public Transport {{!}} Land Transport Authority|website=www.lta.gov.sg|language=en|access-date=2017-08-13|archive-date=2017-08-13|archive-url=https://web.archive.org/web/20170813104749/https://www.lta.gov.sg/content/ltaweb/en/public-transport/projects/circle-line/features.html|url-status=live}}
=Interior=
Driverless operation
The C830 is fully driverless under normal circumstances, using CBTC which does not require traditional "fixed-block track circuits" for determining train position. Instead, they rely on "continuous two-way digital communication" between each controlled train and a wayside control center, which may control an area of a railway line, a complete line, or a group of lines. Recent studies consistently show that CBTC systems reduce life-cycle costs for the overall rail property and enhance operational flexibility and control.{{cite web | title = Urbalis control system | url = http://www.alstom.com/transport/products-and-services/signalling/urbalis-control-system/ | url-status = dead | archive-url = https://web.archive.org/web/20140805073042/http://www.alstom.com/transport/products-and-services/signalling/urbalis-control-system/ | archive-date = 2014-08-05 }}
Train formation
{{Unreferenced section|date=May 2024}}
The coupling configuration of a C830 in revenue service is Mc1–T–Mc2.
| class="wikitable" style="text-align:center"
|+Cars of C830 | ||||||
| rowspan=2|Car Type
! rowspan=2|Quantity ! rowspan=2|Driver Cab ! rowspan=2|Motor ! rowspan=2|Collector Shoe ! colspan=2|Car Length ! rowspan=2|Wheelchair Bay | ||||||
|---|---|---|---|---|---|---|
| bgcolor="#c0c0f0"|m
!bgcolor="#c0c0f0"|ft in | ||||||
| style=text-align:left|Mc | 2 | ✓ | ✓ | ✓ | {{convert|23.65|m|ftin|1|disp=table}} | ✗ |
| style=text-align:left|T | 1 | ✗ | ✗ | ✓ | {{convert|22.8|m|ftin|1|disp=table}} | ✓ |
The car numbers of the trains range from 801x to 840x, where x depends on the carriage type. Individual cars are assigned a four-digit serial number by the rail operator SMRT Trains. A complete three-car trainset consists of one trailer (T) and two driving motor (Mc) cars permanently coupled together. For example, set 801 consists of carriages 8011, 8012 and 8013.
- The first digit is always an 8.
- The second and third digits identify the set number.
- The fourth digit identifies the car number, where the first car has a 1, the second has a 2 and the third has a 3.
- Alstom built sets 801 – 840.
References
{{reflist}}
External links
- [https://web.archive.org/web/20130921055850/http://www.alstom.com/transport/products-and-services/trains/metro-metropolis/ Alstom Metropolis]
{{commons category}}
{{Rail Transport in Singapore}}
Category:Mass Rapid Transit (Singapore) rolling stock
Category:Alstom multiple units