electric train trolley pole. railway electrification system. overhead line wire over rail track. power lines

cable connection contact electric electriccable electricconnection electricpole electricpoles electricpower electricsupply electrictrain electrification line lines modern overhead owerheadpowerline owerheadpowerlines pole power powerline powerlines powersupply powersupplyunit powerwire public rail railroad railroadpowerline railway railwaystation railwaytrain supply suspend system systemsengineering technology telegraph tower track train trainconnection trainelectriccables trainstation transport transportation trolley trolleypole urban utility volt voltage voltageregulator wire