"overhead wiring" . "electric operation" . "Electric traction current" . "25 kV 50 Hz alternating current" . . "electric locomotives" . "at 25 kW 50 Hz" . . . "voltages" . . "4th rail" . . "electrified branch line" . "electrified railway system" . "Elec." . "electrical systems" . "Railway electrification system#Advantages" . "traction current" . . . "railway utilizes an electrical system" . "railroad electrification" . ":Railway electrification system#Polyphase alternating current systems" . "electrification systems" . . . "electrified" . "trackside systems" . "Electrification" . . "rail electrification" . . "electric power generation to the railways" . . "line electrification" . "Railway electrification system" . "electric traction" . "electrified line" . "Electrifying" . "Railway electrification system" . "dual system" . "electrically" . "Fourth rail" . "825 volts" . "fourth" . "Eastern section electrification" . . . "overhead wires" . . "traction power supply" . . . "electrically operated" . "electrical propulsion" . . "electrified lines" . "fourth rail" . "electric service" . "line voltages" . "Railway electrification system#Fourth rail" . . "electrified passenger trains" . "electrified tracks" . "Railway electrification system#Five rail system" . "railway electrification" . "electrification" . . "electric power" . . "route electrification" . "Electric Railway System" . "overhead power supply" . . "tri-current" . "Standardised railway voltages" . "overhead electrification systems" . "power supply voltage" . "Energy electrification" . "electricity supply" . . . "fourth-rail" . "electrifried" . "electric traction equipment" . "Railway_electrification_system#Fourth_rail" . "electric locomotives, and trams" . "electrification of railways" . "electrified rail networks" . . "electrification equipment" . "un-electrified" . "1500 V DC" . "Power supply" . "Overhead wire" . "electrify" . . "Electric traction" . . "four rails" . . "electrically powered" . "electrified railway" . "electric train" . "railways" . "Elec­trifi­cation" . "direct current" . "electrifying" . . "electrified rails" . "electrification system" . "four-rail system" . "Railway electrification" . . "railway power" . "being electrified" . . "Electrified railway" . "electric/battery" . "Electri­fication" . "overhead line system" . "two conductor rails" . . "11,000-volt electrification" . "bi-current" . "electrified infrastructure" . "Railway electrification system#Diesel island" . "traction equipment" . "electrified systems" . "electric" . "electric rail" . "railway's electrification system" . "15 kV 16 \u2154 Hz" . "overhead electrification" . . "non-electrified" . . "system" . "AC Electric" . . "600 V DC" . "catenary" . . . "electrical system" . "electric systems" . "electrificated" . "electrified urban rail" . "power supply" . "electrical supply" . "electrified rail line" . "Electrified" . "railway electrification system" . "electric supply" . "overhead wire" . "electric commuter services" . "electrified rail" . "Railway electrification system#Four rail system" . "Railway Electrification Systems" . . "Power supplies" . "25 kV" . "railway electrification network" . "Rail Electrification" . "unelectrified" . "Electric operation" . "Voltage" . "rail" . . "3 kV" . . "Electric Traction" . "third rail" . "overhead-electric" . "electric-powered" . "tri-voltage" . "DC" . . "electrify the main line" . "1,500 V DC" . "overhead line electrification system" . "overhead catenary" . "electrification scheme" . "electrified railways" . "electrified railroad" . "double electric-line tracks" . "four-rail" . "DC Electric" . "electric railways" . "electric railroad" . "electric railway" . . "electrification schemes" . "Four rail system" . "electrical" . . "Rail electrification" . "25,000 volts" . "electrification of lines" . "electric traction transport" .