. Electric railway journal . lternators are totally inclosed and ventilated byfans on the rotors, which draw air from a basementthrough a dry-air filter and discharges it outside theturbine room. The combination of an alternator and astep-up transformer as one generating unit permittedthe alternator voltage to be so selected as to give thesimplest and most robust stator winding. The statorslots are completely closed and each contains but oneconductor. The step-up and unit transformers belonging to eachgenerating set are housed in a separate chamber in thebasement, with hatchways in the turbine
. Electric railway journal . lternators are totally inclosed and ventilated byfans on the rotors, which draw air from a basementthrough a dry-air filter and discharges it outside theturbine room. The combination of an alternator and astep-up transformer as one generating unit permittedthe alternator voltage to be so selected as to give thesimplest and most robust stator winding. The statorslots are completely closed and each contains but oneconductor. The step-up and unit transformers belonging to eachgenerating set are housed in a separate chamber in thebasement, with hatchways in the turbine-room floorthrough which they can be handled by the crane. Thesechambers are ventilated by fans with air drawn fromthe basement. Each step-up transformer has its ownoil cooler through which the oil is circulated by a rotarypump. The unit transformers are air cooled. The condensing water is taken from the River Lujanthrough two 27-in. pipes about 500 yd. long and dis- J UNIT AND MAIN U U U LI U RAILWAY SUBSTATION TRANSFORMERS. COAL. STORAGE OF THE CENTRAL, ARGENTINE RAILWAYS POWER PLANT NEAR TIGREElectric Railway Journal for Oct. 5, 1918 646 Electric railway Journal Vol. 52, No. 15 Power Supply for theCentral Argentine Electrification This Power System B^^Z^gJSZPower Requirements; m tbElectrn* /on ^ Argentina_ fteCeSaade ayRem rkabt Record for Continuity of Service IN LAST WEEKS issue of the Electric RailwayJournal an article was published giving the salientfeatures of the electrification of the Central ArgentineRailway excepting the power supply system. The pro-vision for power supply is very complete, and deludesa 15,000-kw., three-phase power plant, traction and othersubstations, and a complete alternating-current trans-mission and direct-current distribution system. Powel-ls produced at 2500 volts, 25 cycles; is stepped up to20,000 volts for transmission and is transformed to800 volts direct current for traction purposes or otherform as needed for lighting, power, etc. Suppl
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