Operation of the overhead conductor rails at Shaw's Cove Railroad Bridge in Connecticut Within a movable bridge that utilizes a rigid overhead rail, You will find a really need to changeover from the catenary wire procedure into an overhead conductor rail on the bridge portal (the final traction present pylon ahead of the movable bridge). For examp
Trolleybuses make use of a second parallel overhead line for that return, and two trolley poles, just one making contact with Every overhead wire. (Pantographs are usually incompatible with parallel overhead lines.) The circuit is concluded by making use of both equally wires. Parallel overhead wires will also be utilized over the unusual railways
(In some cases the sections are run with unique voltages or frequencies.) The grids might be synchronised on a normal basis, but activities may perhaps interrupt synchronisation. This is not a problem for DC techniques. AC techniques have a specific safety implication in that the railway electrification procedure would act as a "Backdoor" link amon