. The Street railway journal . owvoltage direct current. This low voltage, 600 volts, is adaptedonly for short transmissions. It was necessary to send 3000 hpto No. 1 steam station, now known as a sub-station. The distancefrom the water power station to this sub-station is il/2 miles. Forthis transmission it was necessary to employ alternating currentsand to use a pressure six times as high as that used for the shortand ordinary transmission just referred to. Similarly, 100 hp is sent to No. 2 steam station, now a sub-station. For St. Paul 2000 hp was sent to No. 3 sub-station,for-merly the ol


. The Street railway journal . owvoltage direct current. This low voltage, 600 volts, is adaptedonly for short transmissions. It was necessary to send 3000 hpto No. 1 steam station, now known as a sub-station. The distancefrom the water power station to this sub-station is il/2 miles. Forthis transmission it was necessary to employ alternating currentsand to use a pressure six times as high as that used for the shortand ordinary transmission just referred to. Similarly, 100 hp is sent to No. 2 steam station, now a sub-station. For St. Paul 2000 hp was sent to No. 3 sub-station,for-merly the old steam plant, and 2000 to sub-station No. 4, a buildingand location especially selected for the purpose. Alternating current apparatus is necessary for economical andstructural reasons when we will transmit large blocks of powerover long distances. High pressures are necessary in order toreduce the first cost of apparatus and in order to decrease trans-mission losses. If you were going to transmit a million gallons of water 1. Street FIG. 6.—SIDE ELEVATION OF FRONT 46-IN. TURBINE FLUME AND CASE generators have been installed. The generators are of two classesor types, well adapted to the work of distribution to be referred tolater. The power, after being converted into electricity, is sent tothe switchboard in the gallery, where it may be controlled and dis-tributed.! THE TWIN CITY RAPID TRANSIT COMPANYS ELECTRIC RAIL-WAY SYSTEM The power service is now ready. One of the corporations towhom propositions were sent on the sale of the power, was theTwin City Rapid Transit Company. This company has an electricrailway franchise, owns and operates the entire electric railway t Additional notes on station and other equipments will be found in Ameri-can Electrician, May, 1898; Street Railway Review, February, 1899; StreetRailway Journal, June, 1897; The Electrical World, Oct. 8, 1898. mile per day, a small-sized pipe and moderate pressure, 60 square inch, would be


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Keywords: ., bookcentury1800, bookdecade1880, bookidstreetrailwa, bookyear1884