List of railway electrification systems

This is a list of the power supply systems that are, or have been, used for tramway and railway electrification systems.

Note that the voltages are nominal and vary depending on load and distance from the substation.

Many modern trams and trains use on-board solid-state electronics to convert these supplies to run three-phase AC induction motors.

Trams electrification systems are listed here.

Key to the tables below

Systems using standard voltages
See also: Railway electrification system § Voltage
See also: List of tram systems by gauge and electrification

Voltages are defined by two standards: BS EN 50163[1] and IEC 60850.[2]

Overhead systems

600 V DC
Country Location Name of system Notes
World
 Many tram systems This voltage is mostly used by older tram systems worldwide but by a few new ones as well. See List of tram systems by gauge and electrification
Australia Adelaide Trams in Adelaide  
Melbourne Melbourne Tramway Network  
Hungary Budapest Budapest Metro Line M1
Japan Chōshi, Chiba Chōshi Electric Railway  
Kyoto, Kyoto Eizan Electric Railway  
Kanagawa Enoshima Electric Railway  
Matsuyama, Ehime Iyotetsu Takahama Line  
Shizuoka, Shizuoka Shizuoka Railway  
Romania Sibiu county Sibiu-Răşinari Narrow Gauge Railway part of the former Sibiu tram line
Spain Madrid Madrid Metro lines 1, 4, 5, 6 and 9. In process to be converted to 1500 V

750 V DC
Country Location Name of system Notes
World
 Many tram systems This voltage is used for most modern tram systems.. See List of tram systems by gauge and electrification
Australia Sydney Sydney Light Rail  
Canberra Canberra Metro  
Gold Coast G:link  
Austria Upper Austria Local lines of Stern & Hafferl also listed as having 1500  and 600 V lines
Austria
Switzerland		 Rhine / Lake Constance Internationale Rheinregulierungsbahn Construction railway for the regulation works of the river Rhine near its outfall into Lake Constance, now preserved. The river forms the border between Austria and Switzerland, and the railway operated in both countries.
Brazil Rio de Janeiro Rio de Janeiro Metro Lines 1, 2 and 4
São Paulo São Paulo Metro Lines 1, 2, 3 and 15 (monorail), 17 (future, monorail)
Germany Karlsruhe to Bad Herrenalb with a branch to Ittersbach Albtalbahn railway of the Upper Rhine
Italy Genova Metropolitana di Genova
Japan Hamamatsu, Shizuoka Enshū Railway  
Hakone, Kanagawa Hakone Tozan Railway Line between Hakone-Yumoto and Gōra
Ehime Iyotetsu Yokogawara Line and Gunchū Line  
Yokkaichi, Mie Yokkaichi Asunarou Railway Utsube Line, Hachiōji Line  
Mie Sangi Railway Hokusei Line  
Mexico Mexico City STC Line A
Netherlands The Hague, Zoetermeer, Rotterdam and adjacent cities Randstadrail  
Rotterdam Rotterdam Metro North of Capelsebrug station overhead wires
Philippines Metro Manila Manila LRT Line 1 (Manila Light Rail Transit System) between Baclaran to Roosevelt
Metro Manila Manila MRT Line 3 (Manila Metro Rail Transit System) between North Avenue to Taft Avenue
Switzerland Canton of Aargau Wynental- und Suhrentalbahn (WSB)  
Republic of China (Taiwan) Taipei, New Taipei, Taoyuan, Kaohsiung Taipei Metro, Taoyuan Metro, and Kaohsiung Metro all lines
Turkey Adana Adana Metro  
Istanbul Istanbul Metro Line M1, M2, M6

1,200 V DC
Country Location Name of system Notes
Cuba Havana – Matanzas and branches Ferrocarriles Nacionales de Cuba originally (and still known as) the Hershey Electric Railway
Estonia     (Elektriraudtee) 1924–1941 and 1946–1958, converted to 3000 V DC
Germany Lusatian   900 mm (2 ft 11 7⁄16 in) gauge mining railways in the lignite district
Spain Barcelona, Catalonia Barcelona Metro uses an overhead conductor rail/beam system
Palma – Sóller, Majorca Sóller Railway [3]
Switzerland Canton of Bern / canton of Solothurn Aare Seeland mobil (ASm) [4][5]
Dietikon, canton of Zürich – Wohlen, canton of Aargau Bremgarten-Dietikon-Bahn
Zürich – Esslingen, canton of Zürich Forchbahn Forchbahn proper only; Forchbahn trains access their Zürich terminus via the Zürich tram network, which is electrified at 600 V DC. The rolling stock is equipped to run off both voltages.
Frauenfeld, canton of Thurgau – Wil, canton of St. Gallen Frauenfeld-Wil-Bahn
Meiringen – Innertkirchen, canton of Bern Meiringen–Innertkirchen Bahn
Zürich – Uetliberg, canton of Zürich Sihltal Zürich Uetliberg Bahn Uetliberg line only – uses an offset overhead line and pantograph to allow running on track shared with the AC-electrified Sihltal line[6]
 US East Bay, California East Bay Electric Lines 1911–1941
This list is incomplete; you can help by expanding it.

1,500 V DC
Country Location Name of system Notes
Argentina Buenos Aires Buenos Aires Metro Lines A, C, D, E and H
Buenos Aires Tren de la Costa Suburban line
Australia Melbourne Melbourne Suburban Railways  
Sydney Sydney Trains  
Sydney Metro  
Brazil São Paulo São Paulo Metro Lines 4 and 5
Bulgaria Sofia Sofia Metro Line 3
Canada Montreal Réseau express métropolitain  
Ottawa O-Train Confederation Line only; the Trillium Line is diesel LRT.
China Beijing Beijing Subway Lines 6, 14 and 16
Changchun Changchun Rail Transit Lines 1 and 2
Changsha Changsha Metro
Changzhou Changzhou Metro
Chengdu Chengdu Metro Except lines 17, 18 and 19
Chongqing Chongqing Rail Transit Lines 1, 4, 5, 6, 10 and Loop Line
Dalian Dalian Metro
Dongguan Dongguan Rail Transit
Fushun Fushun Electric Railway
Fuzhou Fuzhou Metro
Guangzhou Guangzhou Metro except Lines 4, 5, 6, 14 and 21, but overhead wires installed in depots.
Guiyang Guiyang Metro
Hangzhou Hangzhou Metro
Harbin Harbin Metro
Hefei Hefei Metro
Hohhot Hohhot Metro
Jinan Jinan Metro
Lanzhou Lanzhou Metro
Nanchang Nanchang Metro
Nanjing Nanjing Metro
Nanning Nanning Metro
Ningbo Ningbo Rail Transit Line 4 uses third rail for returning current
Shanghai Shanghai Metro except Lines 16 and 17, but overhead wires installed in the depot for line 16.
Shenyang Shenyang Metro
Shenzhen Shenzhen Metro Except Lines 3 and 6, but overhead wires installed in the depot for line 6.
Shijiazhuang Shijiazhuang Metro
Suzhou Suzhou Metro
Tianjin Tianjin Metro Lines 5, 6 and 9 only
Ürümqi Ürümqi Metro
Wuhan Wuhan Metro Line 6 only
Xi’an Xi'an Metro
Xiamen Xiamen Metro
Xuzhou Xuzhou Metro
Zhengzhou Zhengzhou Metro
Colombia Medellín Medellín Metro Lines A and B
Czech Republic Tábor-Bechyně Czech Railway Infrastructure Administration (SŽDC) Tábor-Bechyně line only
Denmark Copenhagen Copenhagen S-train  
Dominican Republic Santo Domingo Santo Domingo Metro  
Egypt Cairo Cairo Metro Line 1[7][8]
France Société Nationale des Chemins de fer (SNCF) 25 kV AC used on new high speed lines (TGV) and in the north
Hong Kong Hong Kong Mass Transit Railway Corporation East Rail Line, West Rail Line, Ma On Shan Line are 25 kV AC
Hungary Budapest Budapest Cog-wheel Railway Converted from 550 V DC (city trams nominal voltage at that time) during the 1973 reconstruction.
Indonesia Jakarta KRL Jabodetabek

Jakarta MRT
Ireland Dublin Dublin Area Rapid Transit  
Italy Roma Metropolitana di Roma Line A, Line B, Line Roma-Ostia Lido
Japan   Japan Railways (JR) lines most electrified lines in Kantō, Chūbu, Kansai, Chūgoku, and Shikoku (except Shinkansen and Hokuriku region)
  Most private railway lines  
  Most subway lines  
Mexico Mexico City STC Line 12
Monterrey Sistema de Transporte Colectivo Metrorrey
Netherlands Nederlandse Spoorwegen - Dutch Railways (NS) 25 kV AC used on new high speed lines and new freight line Betuweroute
New Zealand Wellington Wellington suburban except Wairarapa Line beyond Upper Hutt. Since 2011, the nominal voltage was 1600 V but with the same tolerances as 1500 V (i.e. 1300–1800 V), making it backwards-compatible with 1500 V rolling stock. Since May 2016 the operating voltage was increased to 1700 V DC following the full introduction of the Matangi EMUs.
Philippines Metro Manila Manila MRT Line 2 (Manila Light Rail Transit System) between Santolan to Recto
Portugal Lisbon, Oeiras and Cascais Linha de Cascais  
Portugal Oeiras Ramal do Estádio Nacional Closed
Singapore Singapore Mass Rapid Transit North East Line, operated by SBS Transit
Slovakia   Tatra Electric Railway  
South Korea Seoul National Capital Area Seoul Subway except Korail Subway Line (except Line 3)
(see 25 kV 60 Hz below)
Busan Busan Subway  
Daegu Daegu Subway  
Daejeon Daejeon Subway  
Gwangju Gwangju Subway  
Incheon Incheon Subway  
Spain Cataluña Ferrocarrils de la Generalitat de Catalunya  
Madrid ADIF only Cercedilla-Cotos line
Mallorca Serveis Ferroviaris de Mallorca  
Asturias-León-Cantabria-País Vasco FEVE  
País Vasco Euskotren  
Comunidad Valenciana Ferrocarrils de la Generalitat Valenciana  
Sweden Stockholm Roslagsbanan  
Switzerland Aigle – Leysin, canton of Vaud Chemin de fer Aigle–Leysin (AL)  
Aigle, Vaud – Champéry, canton of Valais Chemin de fer Aigle–Ollon–Monthey–Champéry (AOMC)  
Aigle – Les Diablerets, canton of Vaud Chemin de fer Aigle–Sépey–Diablerets (ASD)  
Interlaken – Lauterbrunnen / Grindelwald, canton of Bern Berner Oberland Bahn (BOB)  
Canton of Jura Chemins de fer du Jura (CJ) metre gauge lines only; standard gauge lines are electrified at 15 kV 16 2/3 Hz
Lausanne – Bercher, canton of Vaud Chemin de fer Lausanne–Échallens–Bercher (LEB)
Nyon – La Cure, canton of Vaud Chemin de fer Nyon-St-Cergue-Morez (NStCNM) converted in the 1980s from 2200 V DC
Vitznau / Goldau – Rigi Rigi Bahnen (VRB/ARB)
Wilderswil – Schynige Platte, canton of Bern Schynige Platte Bahn (SPB)  
Liestal – Waldenburg, canton of Basel-Country Waldenburgerbahn (WB)  
Lauterbrunnen – Grindelwald, canton of Bern Wengernalpbahn (WAB)  
Turkey Bursa Bursa Metro  
Istanbul Istanbul Metro Except lines M1, M2 and M6
United Kingdom Newcastle, Sunderland, Gateshead and Tyneside Tyne and Wear Metro  
London (Liverpool Street) to Shenfield (then Chelmsford) Great Eastern Main Line Opened in 1949.
Converted to 6.25 kV 50 Hz AC in 1960 and later to 25 kV 50 Hz AC[9][10]
Manchester Manchester, South Junction and Altrincham Railway Opened in 1931.
Converted to 25 kV 50 Hz AC in 1971
Converted again to 750 V DC in 1991 (Metrolink).[11][12]
Manchester to Sheffield Manchester-Sheffield-Wath Operated 1949–1984. Abandoned east of Hadfield in 1981; suburban services in Manchester converted to 25 kV, 50 Hz AC as far as Hadfield and Glossop in 1984.[13]
Shildon to Newport County Durham industrial line; operated 1915–1935[14]
United States Chicago Metra Electric District  
Maryland Maryland Transit Administration Purple Line (under construction)
Northern Indiana & Chicago South Shore Line  
Seattle Central Link light rail

3 kV DC
Country Location Name of system Note
Belgium Nationwide Belgium National Railways (SNCB) National standard. 25 kV AC used on high speed lines and some lines in the south area.
Brazil Rio de Janeiro suburban network; SuperVia Trens Urbanos;  
Canada Montreal Deux-Montagnes Line built by CNoR in 1918 as 2400 V DC, converted to 3000 V DC in the 1980s, converted to 25 kV AC/60 Hz in 1995 by ARTM, being converted to 1500 V DC for the REM system.
Chile    
Czech Republic Czech Railway Infrastructure Administration (SŽDC) Northern part of network only (approx. the Děčín - Praha - Ostrava route). The system change stations are Kadaň-Prunéřov, Beroun, Benešov u Prahy, Kutná Hora hl.n., Svitavy, Nezamyslice, Nedakonice. The southern part uses 25 kV 50 Hz.
Estonia Tallinn Elron commuter rail only
Georgia Georgian Railway LLC In fact 3,300 V
Italy RFI - Rete Ferroviaria Italiana (Italian Railways Network) 25 kV AC used on new high speed lines
North Korea   Korean State Railway national standard
Latvia Latvian Railways (LDz) commuter rail only, to be converted to 25 kV AC which to be intended to connect with Russia, Belarus and Lithuania.
Morocco   ONCF (Office National des Chemins de Fer) national standard
Poland Polish State Railways (PKP) planned new high-speed lines will use 25 kV AC[15]
Warszawa and suburbs Warszawska Kolej Dojazdowa (WKD) 600 V DC until 27 May 2016
Russian Federation Russian Railways (RZD) new electrification use only 25 kV AC, except Moscow Central Circle and other interconnection lines in Moscow, and 2 interconnection lines (Veymarn line and Kamennogorsk line) in St. Petersberg. For Sverdlovsk railway and West Siberian railway to be converted to 25 kV AC.
Slovakia Slovak Republic Railways (ŽSR) Northern main line (connected to Czech Republic and Poland) and eastern lines (around Košice and Prešov), conversion to 25 kV AC planned, and the broad gauge line between Košice and the Ukraine border (it will remain 3 kV until new broad gauge line construction, then convert to 25 kV AC), planned new broad gauge line is supposed to use 25 kV AC. Currently, the part north and east of the station Púchov uses 3 kV DC, the rest uses 25 kV 50 Hz.
Slovenia Slovenian Railways (SŽ) national standard
South Africa Transnet Freight Rail (TFR); Metrorail national standard; also 25 kV AC and 50 kV AC used
Spain ADIF (Administrador de Infraestructuras Ferroviarias) 25 kV AC used on high speed lines
Ukraine Ukrainian Railways in east (Donetsk industrial zone), in west (west from L'viv – connecting to Slovakia and Poland), to be converted to 25 kV AC[16]
United States New Jersey, lines towards New York City Morris & Essex Lines By Delaware, Lackawanna and Western Railroad in 1930.[17] Converted to 25 kV 60 Hz by NJT in 1984

15 kV AC, ​16 2⁄3 Hz / 16.7 Hz
Main article: 15 kV AC railway electrification
Country Location Name of system Notes
Austria Austrian Federal Railways national standard
Germany German National Railways national standard
Norway Norwegian National Rail Administration national standard
Sweden Swedish Transport Administration national standard
Switzerland Canton of Bern BLS  
Central Switzerland and Bernese Highlands Zentralbahn  
Canton of Vaud Chemin de fer Bière-Apples-Morges (BAM)  
Canton of Zürich Sihltal Zürich Uetliberg Bahn Sihltal line only; shares track with the 1200 V DC electrified Uetliberg line that uses an offset overhead line and pantograph to allow such sharing
Throughout the country Swiss Federal Railways  

25 kV AC, 50 Hz
Main article: 25 kV AC railway electrification
Country Location Name of system Notes
Argentina Buenos Aires Roca Line Constitución - Ezeiza
Constitución - Alejandro Korn
Constitución - Bosques
Constitución - La Plata
Australia Queensland: Brisbane, North Coast Line, Coalfields Queensland Rail
Western Australia: Perth Transperth
South Australia: Adelaide Adelaide Metro to be electrified (system still under electrification)
Belarus     national standard
Belgium High-speed lines and some other lines Belgium National Railways (NMBS/SNCB) the rest of the network is 3 kV DC — see rail transport in Belgium
Bosnia and Herzegovina   Rail transport in Bosnia and Herzegovina  
Botswana     proposed line to Namibia
Bulgaria   Bulgarian State Railways BDZ  
China Nationwide China Railway Corporation national standard
Beijing Beijing Subway Daxing Airport Line only
Chengdu Chengdu Metro Lines 17, 18 and 19 only
Wenzhou Wenzhou Rail Transit
Congo      
Croatia Nationwide Croatian Railways (HŽ) national standard
Czech Republic Southern lines only (linking Karlovy Vary - Cheb - Plzeň - České Budějovice - Tábor - Jihlava - Brno - Břeclav - Slovakia) Czech Railway Infrastructure Administration (SŽDC)  
Denmark nationwide Banedanmark See rail transport in Denmark
Djibouti Addis Ababa–Djibouti Railway Ethiopian Railway Corporation
Ethiopia Addis Ababa–Djibouti Railway Ethiopian Railway Corporation
Finland Nationwide Finnish Railway network National standard
France north and new lines French National Railways (SNCF)  
Germany Harz Rübelandbahn
Greece Nationwide Hellenic Railways Organisation (OSE) National standard. See Railways of Greece for details of progress.
Hong Kong Kowloon, New Territories Mass Transit Railway Corporation (East Rail Line) (West Rail Line) and (Ma On Shan Line)  
Hungary   Hungarian State Railways (MÁV) and Raaberbahn (GYSEV)  
India Nationwide Indian Railways (IR) Entire IR network uses the current system since 2016.
Mumbai Mumbai Suburban Railway Conversion from 1.5 kV DC to the current system was completed in 2012 (for Western Line[18]) and 2016 (for Central Line[19][20][21]) respectively
Mumbai Mumbai Metro (Line 1)
Chennai (Madras) Chennai Metro  
Delhi Delhi Metro  
Iran     Planned
Israel   Israel Railways Construction contract awarded in December 2015.[22] Initial test runs began December 2017.
Italy     new high-speed lines only
Japan Kantō (northeast of Tokyo), Tōhoku, and Hokkaido regions JR East Tohoku Shinkansen, Joetsu Shinkansen, and Hokuriku Shinkansen (sections between Tokyo - Karuizawa, and between Jōetsumyōkō - Itoigawa)
JR Hokkaido Hokkaido Shinkansen		 60 Hz in some areas, see 60 Hz overhead below.
Kazakhstan      
Latvia   Latvian Railways (LDz) Eastern lines only (planned)
Lithuania Kena — Kaunas and Lentvaris — Trakai Lithuanian Railways (LG) Electrification of Naujoji Vilnia – Kena —

Gudogai (BCh) route for Vilnius – Minsk (Belarus) services is established on 2017. Further Kaunas – Klaipeda corridor electrification will follow project.

Luxembourg nationwide Chemins de fer luxembourgeois (CFL) National standard, but the Luxembourg – Arlon line is electrified under 3 kV DC
Malaysia Padang Besar - KL Sentral - Gemas KTM ETS (run through West Coast railway line), Keretapi Tanah Melayu Berhad Under Construction: Hat Yai (in Thailand) - Padang Besar (to be opened by 2020) and Gemas - Johor Bahru (to be opened by 2022)
Bukit Mertajam - Padang Regas and Butterworth - Padang Besar KTM Komuter Northern Sector, Keretapi Tanah Melayu Berhad  
Batu Caves - Pulau Sebang/Tampin, Tanjung Malim - Port Klang and KL Sentral - Terminal Skypark KTM Komuter Central Sector (Seremban Line, Port Klang Line and Skypark Link), Keretapi Tanah Melayu Berhad  
KL Sentral - KLIA2 Express Rail Link (KLIA Ekspres and KLIA Transit)  
Montenegro Belgrade–Bar railway and Nikšić–Podgorica railway Railways of Montenegro  
Morocco Kenitra–Tangier high-speed rail line ONCF Casablanca–Kenitra section of high-speed rail remains at 3 kV DC[23]
Namibia Proposed line to Botswana    
Netherlands Used on new High Speed Lines and Freight Lines Dutch Railways (NS) 1.5 kV DC used on the rest of the network
New Zealand Auckland Auckland suburban 77 km between Swanson and Papakura; first service 28 April 2014
  North Island Main Trunk Railway Central North Island section, 411 km between Palmerston North and Hamilton
North Macedonia   Makedonski Železnici  
Portugal   Portuguese Railways (CP) except the Linha de Cascais (1500 V DC)
Romania   Romanian Railways (CFR)  
Russian Federation   Russian Railways (RZD) National standard
Saudi Arabia Haramain high-speed railway Saudi Railways Organization Renfe Operadora and Adif will operate the trains and manage the line until 2030
Serbia nationwide Serbian Railways  
Slovakia   Slovak Republic Railways (ŽSR) South-western lines only (around Bratislava, Kuty, Trencin, Trnava, Nove Zamky, Zvolen) and the entire network (except narrow gauge lines) to follow
Spain   ADIF Alta Velocidad High-speed lines only
South Africa   Transnet Freight Rail (TFR), Gautrain  
Thailand Bangkok Suvarnabhumi Airport Link  
Tunisia      [24]
Turkey nationwide Turkish State Railways (TCDD) National standard
United Kingdom Nationwide Network Rail except Southern region and Merseyside
Ukraine   Ukrainian Railways national standard, in most of the west; also 3000 V DC in the east
Uzbekistan      
Zimbabwe Gweru-Harare National Railways of Zimbabwe (NRZ) de-energised in 2008

25 kV AC, 60 Hz
Main article: 25 kV AC railway electrification

While 25 kV 60 Hz is not standardized by BS EN 50163 and IEC 60850; it is the logical equivalent of 25 kV 50 Hz in countries where 60 Hz is the normal grid power frequency.

Country Location Name of system Notes
Canada Montreal Deux-Montagnes Line built by CNoR in 1918 as 2400 V DC, converted to 3000 V DC in the 1980s, converted to 25 kV AC/60 Hz in 1995 by ARTM, being converted to 1500 V DC for the REM system.
Japan Kantō (west of Tokyo), Chūbu, Kansai, Chūgoku, and Kyushu regions Tōkaidō-Sanyō Shinkansen
Hokuriku Shinkansen (sections between Karuizawa - Jōetsumyōkō, and between Itoigawa - Kanazawa)
Kyushu Shinkansen		 50 Hz in eastern Japan; see 25 kV AC 50 Hz overhead above
South Korea South Korea Korail all Korail freight/passenger lines except Seoul subway Line 3 (see 1500 V DC overhead above)
Seoul Shinbundang line
Incheon, Seoul A'REX  
Mexico Mexico City Ferrocarril Suburbano de la Zona Metropolitana del Valle de México  [25]
Taiwan Taiwan Taiwan Railways Administration all electrified lines
Western Taiwan Taiwan High Speed Rail
United States New Jersey Morris & Essex Lines, New Jersey Transit former 3,000 V DC system
Aberdeen-Matawan to Long Branch, New Jersey North Jersey Coast Line, New Jersey Transit Converted in 1978 from Pennsylvania Railroad 11 kV 25 Hz system to the 12.5 kV 25 Hz on the Rahway-Matawan ROW and 12.5 kV 60 Hz electrification extended to Long Branch in 1988. The Matawan-Long Branch voltage converted from 12.5 kV 60 Hz system to the 25 kV 60 Hz in 2002.
New York, NY to Boston Northeast Corridor (NEC), Amtrak electrified in 2000; see Amtrak's 60 Hz traction power system
Denver Denver RTD opened in 2016; separate 750 V DC system for light rail
San Francisco Peninsula Caltrain under construction, expected by 2022; see Electrification of Caltrain
New Mexico Navajo Mine Railroad
Texas Texas Utilities, Monticello & Martin Lake see E25B and Internet reference[26]

Conductor rail systems

600 V DC conductor

All third rail unless stated otherwise.
Used by most older US subways.

Using this type of electrification
No longer using this type of electrification
Type Country Location Name of system Notes
Top contact Argentina Buenos Aires Urquiza Line Federico Lacroze-General Lemos
Top contact Canada Toronto Toronto Subway and Rapid Transit only on subway lines
Top contact Greece Athens EIS/ISAP used between 1904 and 1985
Top contact Italy Turin Superga Rack Railway  
Top contact Japan Tokyo Tokyo Metro Ginza Line and Marunouchi Line  
  Nagoya, Aichi Nagoya Municipal Subway Higashiyama Line and Meijō Line  
Top contact Sweden Stockholm Stockholm Metro 650 V, Green and Red Lines
Top contact United Kingdom Glasgow Glasgow Subway  
Top contact United States Boston Massachusetts Bay Transportation Authority Red and Orange Lines, the subway part of the Blue Line southwest of Airport Station
Top contact Chicago Chicago "L" elevated and subway lines
Top contact New York City New York City Subway  
Top contact Staten Island Railway  
Top contact New York City metro area PATH  
Top contact Philadelphia Southeastern Pennsylvania Transportation Authority
Bay Lake, Florida Walt Disney World Monorail System

750 V DC conductor

Conductor rail systems have been separated into tables based on whether they are top, side or bottom contact. All systems are third rail unless stated otherwise.

Bottom contact
Country Location Name of system Notes
Algeria Algiers Algiers Metro  
Austria Vienna Vienna U-Bahn  
Brazil São Paulo São Paulo Metro except Lines 4 and 5
China Beijing Beijing Subway Capital Airport Line only
Kunming Kunming Metro
Tianjin Tianjin Metro Lines 2 and 3 only
Wuhan Wuhan Metro Lines 1, 2, 3 and 4 only
Czech Republic Prague Prague Metro  
Denmark Copenhagen Copenhagen Metro  
Egypt Cairo Cairo Metro Line 2 and Line 3
Finland Helsinki Helsinki Metro  
Germany Berlin Berlin U-Bahn Lines from U5 to U9 (large profile). Negative polarity.
Hamburg Hamburg U-Bahn  
Munich Munich U-Bahn  
Nuremberg Nuremberg U-Bahn  
India Bangalore Namma Metro  
Kochi Kochi Metro  
South Korea Busan Busan-Gimhae Light Rail Transit  
Malaysia Klang Valley Klang Valley Integrated Transit System LRT & MRT (Ampang, Sri Petaling, Kelana Jaya and Sungai Buloh–Kajang lines), and KL Monorail to be used on Bandar Utama–Klang and Sungai Buloh–Serdang–Putrajaya lines
Netherlands Amsterdam Amsterdam Metro including line 51 north of Station Zuid
Rotterdam Rotterdam Metro North of Capelsebrug station overhead wires
Norway Oslo Oslo T-bane  
Poland Warsaw Warsaw Metro  
Romania Bucharest Bucharest Metro  
Singapore Singapore Mass Rapid Transit North South Line, East West Line and Circle Line operated by SMRT Trains

Downtown Line operated by SBS Transit
Thomson-East Coast Line

Taiwan Kaohsiung Kaohsiung Mass Rapid Transit
Taipei Taipei Metro
Taoyuan–Taipei Taoyuan Metro
Turkey Ankara Ankara Metro  
Istanbul Istanbul Metro Lines M2 and M6 only
Izmir Izmir Metro  
United Kingdom London Docklands Light Railway  
United States New York City Metro-North Railroad  
Side contact
Country Location Name of system Notes
Canada Montreal Montreal Metro (guide bars, see DC, four-rail below)
Chile Santiago Santiago Metro  
France Paris Paris Métro (Rubber tired) Positive (and sometimes negative) polarity on guide bars.
See DC, four-rail below.
Lyon Lyon Métro
Marseille Marseille Métro
Lille Lille Métro
Rennes Rennes Métro
Toulouse Toulouse Métro
Hong Kong Hong Kong Hong Kong International Airport
Automated People Mover (APM)		 Mitsubishi "Crystal Mover" system using two power rails (positive and negative) with side collection.
Indonesia Palembang, South Sumatra Palembang Light Rail Transit
Japan Sapporo, Hokkaido Sapporo Municipal Subway Namboku Line  
Singapore Singapore Light Rail Transit Sengkang LRT Line and Punggol LRT Line operated by SBS Transit
Singapore Sentosa Express Sentosa Express operated by SDC
United States Las Vegas Las Vegas Monorail  
Top contact
Country Location Name of system Notes
China Beijing Beijing Subway Capital Airport Line use button contact
Tianjin Tianjin Metro Line 1 only
France Paris Paris Métro (Conventional metro)  
Germany Berlin Berlin U-Bahn Lines from U1 to U4 (small profile)
Greece Athens Athens Metro Line 1 was 600 V before 1985.
Hungary Budapest Budapest Metro except line M1, which is 600 V DC with overhead lines.
India Kolkata Kolkata Metro  
Japan Osaka, Osaka Osaka Metro except the Sakaisuji Line, Nagahori Tsurumi-ryokuchi Line, and the Imazatosuji Line, which are 1,500 V DC with overhead lines.
Suita, Osaka
Toyonaka, Osaka		 Kita-Osaka Kyuko Railway  
Higashiosaka, Osaka
Ikoma, Nara
Nara, Nara		 Kintetsu Keihanna Line  
Yokohama, Kanagawa Yokohama Municipal Subway Blue Line (Line 1 and Line 3) only
North Korea Pyongyang Pyongyang Metro based on fleet of cars from Beijing and Germany
South Korea Yongin Everline  
Portugal Lisbon Lisbon Metro  
Puerto Rico San Juan Tren Urbano  
Sweden Stockholm Stockholm Metro Nominal voltage 650 V, subway 3 (blue line) 750 V. Subway 1 and 2 will change in the long term to 750 V.
United Kingdom Liverpool Merseyrail  
London Northern City Line access to City (Moorgate)
London LNWR Suburban Network formerly four-rail out of Euston and Broad Street, curtailed, upgraded and standardised
Southern England Southern Region of British Railways and successors 660 V system upgraded and expanded
United States Atlanta, Georgia MARTA
Los Angeles, California Los Angeles Metro Rail Red and Purple Lines
Miami, Florida Metrorail
New York City and Long Island
East River Tunnels shared with Amtrak		 Long Island Rail Road Central, Greenport, and Oyster Bay branches not electrified; Montauk Branch not electrified east of Babylon; Port Jefferson Branch not electrified east of Huntington
Philadelphia, PA PATCO Speedline  
Puerto Rico Tren Urbano
Washington, D.C. Washington Metro  
within the Hudson and East River Tunnels as well as under Manhattan
Northeast Corridor		 Amtrak  
within the Hudson Tunnel into Manhattan New Jersey Transit  
Mixed
Using this type of electrification
No longer using this type of electrification
Type Country Location Name of system Notes
See note China Tianjin Tianjin Metro Top contact in Line 1, bottom contact in Lines 2 and 3

1200 V DC conductor

All systems are third rail unless stated otherwise.

Using this type of electrification
No longer using this type of electrification
Side contact
Country Location Name of system Notes
Germany Hamburg Hamburg S-Bahn 15 kV/16.7 Hz with overhead line in part of network.
United Kingdom Manchester Manchester-Bury Dismantled 1991, converted to Manchester Metrolink tramway (750 V DC overhead)

Systems using non-standard voltages

Overhead systems

DC voltage
Voltage Country Location Name of system Notes
120 United Kingdom Seaton, Devon Seaton Tramway Half scale trams. Operated 1969-now. Substations have battery banks for back up.
250 United States Chicago Chicago Tunnel Company operated 1906–1959
525 Switzerland Lauterbrunnen Bergbahn Lauterbrunnen-Mürren  
550 China Hong Kong Hong Kong Tramways  
550 Isle of Man Isle of Man Manx Electric Railway including Snaefell Mountain Railway
India Kolkata Trams in Kolkata  
650 United States Buffalo, New York Buffalo Metro Rail
El Paso, Texas El Paso Streetcar
Pittsburgh Pittsburgh Light Rail
Switzerland Basel Basel Trams (BVB/BLT)
700 Switzerland Bex – Col de Bretaye, Vaud Chemin de fer Bex-Villars-Bretaye
740 USA Oklahoma City Oklahoma City Streetcar
800 Poland Tricity Szybka Kolej Miejska (Tricity) Operated 1951-1976. Converted to 3,000 V DC in 1976.
825 USA Portland, Oregon MAX, TriMet light rail sections west of NE 9th Avenue & Holladay Street utilize a 750 V system
850 Switzerland Capolago – Monte Generoso, Ticino Ferrovia Monte Generoso (MG)
900 Switzerland Fribourg Gruyere – Fribourg – Morat  
Switzerland Montreux Montreux-Oberland Bernois  
1,000 Switzerland
Italy		 St Moritz, canton of Graubünden – Tirano, Lombardy Rhätische Bahn (RhB) Bernina line only; remainder of system electrified at 11 kV AC, 16 2⁄3 Hz. The Bernina line is an international line linking Switzerland (St. Moritz) with Italy (Tirano)
Hungary Budapest Budapest Commuter Rail and Rapid Transit (BHÉV) [27]
1,100 Argentina Buenos Aires Buenos Aires Metro (Subterráneos de Buenos Aires) only Line A (converted to 1,500 V DC with La Brugeoise trains replaced by new rolling stock in 2013)
1,250 Switzerland Canton of Bern Regionalverkehr Bern-Solothurn (RBS) All lines except tram line 6 between Bern and Worb, which is electrified at 600 V DC[28]
1,350 Italy Switzerland Domodossola, Piedmont – Locarno, canton of Ticino Ferrovia Domodossola–Locarno (FART/SSIF) International railway between Italy (Domodossola) and Switzerland (Locarno)
Switzerland Lugano – Ponte Tresa, canton of Ticino Ferrovia Lugano–Ponte Tresa (FLP)
2,400 Germany Lausitzer   work line of the Lausitzer Brown Coal AG company
Poland Konin PAK KWB KONIN[29]
Poland Turek PAK KWB ADAMÓW[29]
France Grenoble Chemin de fer de La Mure −1,200 V, +1,200 V two wire system from 1903 to 1950. 2,400 V since 1950.[30]
3,000 USA Chicago, Milwaukee, St. Paul and Pacific Railroad 645 miles (1,038 km) on two sections, dismantled 1974
3,500 United Kingdom Manchester Bury – Holcombe Brook operated 1913–1918
6,000 Russia     experiments in the late 1970s (3,000 V DC lines)

AC voltage
Voltage Frequency Country Location Name of system Notes
5,500 ​16 2⁄3 Hz Germany Murnau Ammergau Railway 1905–1955, after 1955 15 kV, 16.7 Hz
6,250 50 Hz United Kingdom London, Essex, Herts Great Eastern suburban lines Great Eastern suburban lines from Liverpool Street London, 1950s–c1980 (converted to 25 kV)
United Kingdom Glasgow Glasgow suburban lines Sections of the North Clyde Line and Cathcart Circle Line from 1960-1970s
6,300 25 Hz Germany Hamburg Hamburg S-Bahn Operated with AC 1907–1955. Used both AC and DC (1,200 V 3rd rail) 1940–1955.
6,500 25 Hz Austria Sankt Pölten Mariazellerbahn  
6,600 Norway Orkdal Thamshavnbanen  
6,600 50 Hz Germany Cologne Lowland Hambachbahn and Nord-Süd-Bahn transports lignite from open-pit mines to powerplants. Owned by RWE.
6,700 25 Hz United Kingdom Morecambe branch line Lancaster to Heysham 1908–1951
Converted to 25 kV 50 Hz as a test bed for the future main line electrification system
South London line London Victoria station to London Bridge station 1909–1928
Converted to 660 V (later 750 V) DC third-rail supply
8 kV 25 Hz Germany Karlsruhe Alb Valley Railway 1911–1966, today using 750 V DC
10 kV Netherlands The Hague - Rotterdam Hofpleinlijn from 1908, in 1926 converted to 1,500 DC, In 2006 replaced by 750 V DC light rail
10 kV 50 Hz Russia industrial railways at quarries Russian Railways operated from 1950s at coal and ore quarries
Ukraine Ukrainian Railways
Kazakhstan some private industrial railways in Kazakhstan
11 kV ​16 2⁄3 Hz Switzerland Graubünden Rhätische Bahn (RhB) Except the Bernina line, which is electrified at 1,000 V DC
  Matterhorn-Gotthard-Bahn (MGB) formerly Furka Oberalp Bahn (FO) and BVZ Zermatt-Bahn
50 Hz France Saint-Gervais-les-Bains Mont Blanc Tramway  
11 kV 25 Hz United States   Pennsylvania Railroad
Etc.,		 All lines now 12 kV 25 Hz or 12.5 kV 60 Hz
See Railroad electrification in the United States
12 kV ​16 2⁄3 Hz France lines in Pyrenees Chemin de fer du Midi most converted to 1,500 V 1922–23; Villefranche-Perpignan diesel 1971, then 1,500 V 1984
12 kV 25 Hz United States Washington, DC - New York City Northeast Corridor (NEC), Amtrak 11 kV until 1978
Harrisburg, PA to Philadelphia, PA Keystone Corridor, Amtrak 11 kV until 1978
Philadelphia SEPTA Regional Rail system only; 11 kV until 1978
12 kV 25 Hz United States Rahway to Aberdeen-Matawan, New Jersey North Jersey Coast Line, New Jersey Transit 1978-2002 (11 kV until 1978). Converted to 25 kV 60 Hz
12.5 kV 60 Hz United States Pelham, NY-New Haven, CT New Haven Line, Metro-North Railroad, Amtrak 11 kV until 1985
16 kV 50 Hz Hungary Budapest–Hegyeshalom railway Budapest to Hegyeshalom Kandó system 1931–1972, converted to 25 kV 50 Hz
20 kV 50 Hz Germany Freiburg Höllentalbahn Operated 1933–1960. Converted to 15 kV ​16 2⁄3 Hz.
France Aix-les-Bains – La Roche-sur-Foron Société Nationale des Chemins de fer (SNCF) Operated 1950–1953. Converted to 25 kV 50 Hz.
20 kV 50 Hz Japan most electrified JR/the third sector lines in Hokkaidō and Tōhoku JR East, JR Hokkaidō, and others  
60 Hz most electrified JR/the third sector lines in Kyūshū and Hokuriku region JR Kyūshū and others  
50 kV 50 Hz South Africa Northern Cape, Western Cape Sishen–Saldanha railway line opened in 1976 and hauls iron ore
60 Hz Canada British Columbia Tumbler Ridge Subdivision of BC Rail (Now Canadian National Railway) Opened in 1983 to serve a coal mine in the northern Rocky Mountains. No longer in use.
60 Hz United States Arizona Black Mesa and Lake Powell Railroad First line to use 50 kV electrification when it opened in 1973. This was an isolated coal-hauling short line; no longer in use.
60 Hz United States Utah Deseret Power Railroad Formerly Deseret Western Railway. This is an isolated coal-hauling short line.

Three-phase AC voltage
Main article: Three-phase AC railway electrification
Two wires
Voltage Current Country Location Name of system Notes
725 50 Hz, 3Ø Switzerland Zermatt – Gornergrat, canton of Valais Gornergratbahn
750 40 Hz, 3Ø Burgdorf – Thun Burgdorf-Thun Bahn Operated 1899–1933
converted to 15 kV ​16 2⁄3 Hz in 1933
800 60 Hz, 3Ø Brazil Rio de Janeiro Corcovado Rack Railway  
1125 50 Hz, 3Ø Switzerland Interlaken Jungfraubahn
3600 15 Hz, 3Ø Italy Northern Italy Valtellina Electrification 1902–1917
50 Hz, 3Ø France Saint-Jean-de-Luz to Larrun Chemin de Fer de la Rhune  
3600 16 Hz, 3Ø Switzerland, Italy Simplon Tunnel   1906–1930
3600 ​16 2⁄3 Hz, 3Ø Italy     operated 1912–1976 in Upper Italy (more info needed)
Porrettana railway FS 1927–1935
3600 ​16 2⁄3 Hz, 3Ø Italy Trento/Trient to Brenner Brenner Railway 1929 - 1965
5200 25 Hz, 3Ø Spain Almeria – Gergal   1911–1966?
6600 25 Hz, 3Ø United States Cascade Tunnel Great Northern Railway (U.S.) 1909 - 1929
10 kV 45 Hz, 3Ø Italy Roma - Sulmona FS 1929–1944[31]
Three wires
Voltage Current Country Location Name of system Notes
3000 V 50 Hz Germany Kierberg Zahnradbahn Tagebau Gruhlwerk rack railway (0.7 km)
operated 1927–1949
10000 V 50 Hz Berlin-Lichterfelde (de)   test track (1.8 km);
variable voltage and frequency;
trial runs 1898–1901
14 kV
(See notes)		 38 Hz - 48 Hz
(See notes)		 Zossen - Marienfelde   test track (23.4 km);
trial runs 1901–1904

variable voltage between 10 kV and 14 kV and frequency between 38 Hz and 48 Hz.

50 Hz Russia Ship elevator of Krasnoyarsk Reservoir   length: 1.5 km, 9000 mm gauge

Conductor rail systems (all DC voltage)

Conductor rail systems have been separated into tables based on whether they are top, side or bottom contact.

Top contact systems
Voltage Type Country Location Name of system Notes
50 See notes United Kingdom Brighton Volk's Electric Railway Volk's Railway prior to 1884
(current fed through running rails)
110 third rail Claims to be the world's oldest operational electric railway
160 Volk's Railway between 1884 and 1980s
100 fourth rail Beaulieu Monorail at National Motor Museum current fed by 2 contact wires
180 See notes Germany Berlin-Lichterfelde Siemens streetcar Current fed through the running rails
Operated 1881–1891
200 third rail United Kingdom Southend Southend Pier Railway Until 1902[32]
250 Hythe, Hampshire Hythe Pier Railway  
USA Chicago, Illinois Chicago Tunnel Company Morgan Rack

1904, revenue service 1906–1908

300 Georgia New Athos Cave Railway
400 Germany Berchtesgaden Berchtesgaden Salt Mine Railway
440 United Kingdom London Post Office Railway Disused by post office since 2003[33] Now small section near Mount Pleasant operated as tourist attraction with battery powered stock[34]

150 V was used in station areas to limit train speed

550 Argentina Buenos Aires Buenos Aires Metro (Subterráneos de Buenos Aires) Only Line B
630 United Kingdom Isle of Wight Island Line  
630 4th rail London London Underground (LUL) Supplied at +420 V and -210 V (630 V total); It is proposed to increase the voltage to 750 V (+500 V and -250 V)[35]
650 See notes London Euston to Watford DC Line Third rail with fourth rail bonded to running rail

To enable London Underground trains to operate between Queens Park and Harrow & Wealdstone. Similar bonding arrangements are used on the North London Line between Richmond and Gunnersbury and South West Trains Putney Bridge to Wimbledon.

660 third rail   Southern Railway & LSWR some areas up to 1939, original standard, mostly upgraded to 750 V (except for sections that operate with LUL stock).
700 USA Baltimore, Maryland Baltimore Metro SubwayLink
800 Germany Berlin Berlin S-Bahn discontinued, today 750 V
825 North Korea Pyongyang Pyongyang Metro uses old 750 V Berlin U-Bahn rolling stock
1000 USA San Francisco Bay Area Rapid Transit [36]
1500 France Chambéry - Modane Culoz–Modane railway used between 1925 and 1976, today overhead wire

Side contact systems
Voltage Type Country Location Name of system Notes
850third rail FranceMartigny Ligne de Saint Gervais - Vallorcine
1200third rail United KingdomManchester Manchester-BuryDismantled 1991, converted to Manchester Metrolink tramway (750 V DC overhead)
1200third rail GermanyHamburg Hamburg S-BahnSince 1940. Used both third rail DC (1200 V) and overhead line AC (6300 V 25 Hz) until 1955. Also uses German standard 15 kV, 16 2/3 Hz overhead electrification on the section between Neugraben and Stade on line S3, opened in December 2007.

Bottom contact systems
Voltage Type Country Location Name of system Notes
650 third rail Canada Vancouver SkyTrain Expo Line (1985) and Millennium Line (2006)
700 third rail United States New York Metro-North Railroad Hudson and Harlem Lines, southern part of New Haven Line. Original New York Central Railroad electrification scheme to Grand Central Terminal.
Philadelphia Market-Frankford Line Originally 600 V, raised to 700 V
825 third rail Bulgaria Sofia Sofia Metro Lines 1 and 2
Russia Moscow Moscow Metro Nominal voltage: 825 V; allowed range: 550 V - 975 V[37]
Saint Petersburg Saint Petersburg Metro
Novosibirsk Novosibirsk Metro
Nizhny Novgorod Nizhny Novgorod Metro
Samara Samara Metro
Yekaterinburg Yekaterinburg Metro
Kazan Kazan Metro
Ukraine Kiev Kiev Metro FSU underground systems share the same standard[38]
Kharkiv Kharkiv Metro
Dnipro Dnipro Metro
830 third rail Argentina Buenos Aires Mitre Line Retiro - José León Suárez
Retiro - Bartolomé Mitre
Retiro - Tigre
Once - Moreno Sarmiento Line
850 third rail France Villefranche Ligne de Cerdagne Often referred to as the "Yellow Train"
Austria Vienna Wiener Lokalbahn  
900 third rail Belgium Brussels Brussels Metro
1500 third rail China Beijing Beijing Subway Line 7 only
Guangzhou Guangzhou Metro Lines 4, 5, 6, 14 and 21 only. Overhead wires in depots; all trains are equipped with pantographs
Qingdao Qingdao Metro
Shanghai Shanghai Metro Lines 16 and 17 only. Overhead wires in depot of Line 16; all trains are equipped with pantographs
Shenzhen Shenzhen Metro Lines 3 and 6 only
Wuhan Wuhan Metro Lines 7, 8, 11 and Yangluo Line only
Wuxi Wuxi Metro

Special or unusual types

DC, plough collection from conductors in conduit below track
Main article: Conduit current collection

DC, one ground-level conductor
  • Wolverhampton Corporation Tramways, England (stud contact) (1902–1921)
  • Bordeaux Tramway, France (conductor rail)
  • Sydney Light Rail (tramway)(Under construction)

DC, two-wire
  • Greenwich, England. Previously used by trams when in the vicinity of Greenwich Observatory; separate from trolleybus supply.
  • Cincinnati, Ohio, US. Tram (streetcar) system used this arrangement throughout, probably due to legal constraints on ground return currents.
  • Havana and Guanabacoa, Cuba. Tram (streetcar) systems in both cities used this arrangement.
  • Lisbon, Portugal. Elevador da Bica, Elevador da Glória and Elevador da Lavra.

DC, power from running rails

DC, four-rail
Voltage Type Contact system Name of system Location Country Notes
750 guide bars lateral to both guide bars (one guide connected to running rail) Paris Metro Paris France rubber-tyred lines only
Lateral (positive) and top of running rails (negative) contact Montreal Metro Montreal Canada rubber-tyred lines
Mexico City Metro Mexico City Mexico rubber-tyred lines
Third and fourth rail lateral (positive) and top (negative) contact Milan Transportation System Milan Italy metro (only line 1)
Top contact London Underground London UK Transport for London[39]
630

See also

Footnotes
  1. BS EN 50163 (2007).
  2. IEC 60850 (2007).
  3. Sóller Website
  4. Schweers+Wall (2012), p. 11.
  5. Schweers+Wall (2012), p. 19.
  6. "Bahn S4/S10" [Railway S4/S10] (in German). SZU. Retrieved 2011-09-01.
  7. Barrow, Keith (14 March 2014). "Cairo to order new trains for metro Line 1". International Railway Journal. Simmons-Boardman Publishing Inc. Retrieved 23 January 2015.
  8. "Cairo Metro Tender for New Rolling Stock". MENA RAIL POST. MENA RAIL POST. 16 March 2014. Archived from the original on 23 January 2015. Retrieved 23 January 2015.
  9. Boddy et al. (1990), p. 139.
  10. Swain (1990), p. 19.
  11. Boddy et al. (1990), p. 135.
  12. Dixon (1994), p. 119.
  13. Boddy et al. (1990), p.101 & p.142
  14. Boddy et al. (1990), p. 92–93.
  15. Michał Szymajda (17 January 2020). "Szybka linia kolejowa „Y" przez CPK ma być gotowa do 2030 roku" [High-speed 'Y' railway line through CPK should be completed by 2030]. Rynek Lotniczy (in Polish). Retrieved 5 February 2020.
  16. Railway Gazette International April 2008, p 240
  17. Electrified D. L. & W. Time magazine archives Retrieved 2007-08-12
  18. "Western Railway sets stage for AC system - Times of India". timesofindia.com. Retrieved 10 April 2018.
  19. "From May 5, faster Central Railway with AC power - Times of India". timesofindia.com. Retrieved 10 April 2018.
  20. "Soon, faster trains on Kalyan-LTT route - Times of India". timesofindia.com. Retrieved 10 April 2018.
  21. "Central Railway plans DC/AC switch in May - Times of India". timesofindia.com. Retrieved 10 April 2018.
  22. "Israel Railways awards USD 500m electrification contract to Spanish SEMI". Think Railways. Retrieved 17 January 2016.
  23. "Africa's first high speed line inaugurated". Railway Gazette. 16 November 2018. Retrieved 14 December 2018.
  24. https://web.archive.org/web/20160324151013/http://www.railwaysafrica.com/news/new-25kv-electrification-in-tunisia
  25. "Espacio del Viajero: Conoce los Trenes" (in Spanish). Mexico City: Ferrocarriles Suburbanos. Retrieved 24 May 2011. Alimentación (Vcc. catenaria): 25000, 60 Hz
  26. "TXU - Monticello Line". Trainweb.org. 1999-11-02. Retrieved 2013-04-22.
  27. "Railway Technical Info - Hungary". www.chiark.greenend.org.uk. Retrieved 10 April 2018.
  28. Schweers+Wall (2012), p. 66.
  29. http://www.locomotives.com.pl/Electric%20Locomotives/EL2.htm
  30. "ERS - Presentation, La Mure". www.railfaneurope.net. Retrieved 10 April 2018.
  31. Cacozza, Marco (August 2016). "Three-Phase Electrification: An Italian Story". Today's Railways Europe #248. Cite journal requires |journal= (help)
  32. "Southend Pier Railway".
  33. Karslake, Colin. "Unofficial MailRail Website - Home". www.mailrail.co.uk. Retrieved 10 April 2018.
  34. https://www.postalmuseum.org/discover/attractions/mail-rail-ride/
  35. London Underground (October 2014), New Tube for London - Feasibility Report (PDF), p. 26
  36. "BART System Facts". San Francisco Bay Area Rapid Transit District. Retrieved 2014-02-05.
  37. "Rules of technical operation of undergrounds of the Russian Federation (Правила технической эксплуатации метрополитенов Российской Федерации)" (PDF) (in Russian). International Metro Association. Archived from the original (PDF) on 2013-10-10. Retrieved 2017-11-30.
  38. "Structures, devices and rolling stock of underground (Сооружения, устройства и подвижной состав метрополитена)" (in Russian). Archived from the original on 2017-09-19. Retrieved 2017-11-30.
  39. "Tube | Transport for London". Tfl.gov.uk. Retrieved 2013-04-22.

References
  • BS EN 50163 (2007), EN 50163: Railway applications. Supply voltages of traction systems, IET, archived from the original on 2007-02-13CS1 maint: ref=harv (link)
  • IEC 60850 (2007), IEC 60850: Railway applications - Supply voltages of traction systems (3rd ed.)CS1 maint: ref=harv (link)
  • Boddy, M.G.; Fry, E.V.; Hennigan, W.; Hoole, Ken; Mallaband, Peter; Neve, E.; Price, J.H.; Proud, P.; Yeadon, W.B. (April 1990). Fry, E.V. (ed.). Locomotives of the L.N.E.R., part 10B: Railcars and Electric Stock. Lincoln: RCTS. ISBN 0-901115-66-5.
  • Dixon, Frank (1994) [1973]. The Manchester South Junction & Altrincham Railway. The Oakwood Library of Railway History (2nd ed.). Headington: Oakwood Press. ISBN 0-85361-454-7. OL34.CS1 maint: ref=harv (link)
  • Schweers+Wall (2012). Eisenbahnatlas Schweiz. Verlag Schweers + Wall GmbH. ISBN 978-3-89494-130-7. ASIN 3894941308.CS1 maint: ref=harv (link)
  • Swain, Alec (1990). British Rail Fleet Survey 11: Overhead Line Electric Multiple-Units. Shepperton: Ian Allan. ISBN 0-7110-1902-9.CS1 maint: ref=harv (link)
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