Electrification - Circuit Diagrams

Shown below is a diagram of a typical traction power supply configuration - from the 3-phase regional high-voltage grid through the traction transformers and the sectioning and subsectioning and paralleling posts to the 25kV AC catenary. Also see the circuit diagrams of traction systems showing the power flow from the catenary through the locomotive. For more information on this and related topics, see the FAQ sections on electric traction and electric locomotives.