Chicago Elevated Railroads
Train on Intramural Railway Chicago, 1893
8-car Train—Chicago Elevated Roads—Equipped with GE-243 Motors
4000-Kw. Synchronous Converters at Campbell Avenue and Homer Street Station
Power Supply
The power for the early elevated lines was derived from engine-driven direct-current power plants all of which have since become obsolete. All power, therefore, is supplied from the network of the Commonwealth Edison Co., which maintains an ample reserve to supply all needs. While a large percentage of the power now being purchased is generated at 25 cycles, the policy of the Power Co. on all new equipment is to specify 60 cycles.