. Electric railway review . sting design. This company IF «d m - 8 ■ ■ ■ 1 * 1 Metropolitan Elevated Railway—FloorSubstation Plan Forty-Sixth Avenue 52 miles of elevated track consisting of a four-track ture from the connection with the Onion elevated loop in the business district to Marshficld avenue, at which point - Into three double-track 111 eling supplied as direct current through the third rail and auxiliaryfeeders from a generating station between Loomis street andThroop street. This power house is located well downtown andas the lines have been built toward the west the feeders havebe
. Electric railway review . sting design. This company IF «d m - 8 ■ ■ ■ 1 * 1 Metropolitan Elevated Railway—FloorSubstation Plan Forty-Sixth Avenue 52 miles of elevated track consisting of a four-track ture from the connection with the Onion elevated loop in the business district to Marshficld avenue, at which point - Into three double-track 111 eling supplied as direct current through the third rail and auxiliaryfeeders from a generating station between Loomis street andThroop street. This power house is located well downtown andas the lines have been built toward the west the feeders havebeen extended and enlarged until they have about reachedthe economical point for distribution with liOO-volt it might have been possible to increase the capacityof the generating station by the addition of a turbo-drivenalternator, the physical conditions, with the power plant lo-cated as it is between two double-track elevated structures ins thickly built district, combined with the limited floor space. Metropolitan Elevated Railway Map Showing Location ofGenerating Stations and Substations. and the difficulties incident to condensation and fuel supply,seemed to make it more advisable to obtain additional powerfrom another source. When the amount of capital necessaryto increase the capacity of this station, and its limiting fea-tures was compared with the cost of building rotary-con vsubstations and purchasing power, it was found that the sub-stations had a favorable balance. By locating such sub-stations at outlying points the investment for cables to carryboth alternating and direct current, which would have beennecessary with an Increi paclty in this companys gen- erating station, was not required. The present condllwarranted the building and equipping of two rotary-convertersubstations, one on the Garfield Park branch at Forty-Sixthavenue and the oilier near Robey street at the junction ofthe Humboldt Park and Logan Square branches, both substations to
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectstreetr, bookyear1906
