. The Street railway journal . , at 550 volts. All of the controlling apparatus in this stationis enclosed in separate housings with marblefronts. There is no general switchboard, as theseveral units were installed at different times,and the present arrangements do not permit anyextensive changes. bevel gearing and rope drive. The two generators are each of300-hp capacity, giving 700 volts to 750 volts direct current at200 r. p. m. Tlie eastern part f Ibis station contains three bvdro-electrk UP1- LR LOWER STATIONturbo-gent <-ator set in the upper station is owned The lower by the Schaffhau
. The Street railway journal . , at 550 volts. All of the controlling apparatus in this stationis enclosed in separate housings with marblefronts. There is no general switchboard, as theseveral units were installed at different times,and the present arrangements do not permit anyextensive changes. bevel gearing and rope drive. The two generators are each of300-hp capacity, giving 700 volts to 750 volts direct current at200 r. p. m. Tlie eastern part f Ibis station contains three bvdro-electrk UP1- LR LOWER STATIONturbo-gent <-ator set in the upper station is owned The lower by the Schaffhausen C01 1 Works, which, like the SchaffhausenWostecl Works, lease power from the municipality. The two 256 STREET RAILWAY JOURNAL. [Vol. XXIII. No. 7. upper turbo-generator sets are used for general current dis-tribution. All the generators are connected to their respectiveturbines by gearing. The two upper turbines were built by Escher, Wyss & Com-pany, and the lower one by J. J. Rieter & Company, each to give. AT THE SCHEIDEGG CROSSING 350 hp at 60 r. p. m., at a flow varying from 7800 to 8400second-liters. The lower tut bine is of Jonval type, and is connected to a350-hp, three-phase generator, which, at 170 r. p. m., gives 420 OPERATING COMBINATIONSUnder normal operating conditions the lighting circuits arefed by the two single-phase alternators in the lower station, andthe power circuits (including the railway) are fed by the twoalternators in the upper station. Should an accident occur thereserve generator in the lower station can beoperated in parallel with the generators on thelighting circuit. If, however, one of the powerservice generators in the upper station is dis-abled the reserve generator can be used for thepower circuits. The single-phase, 2000-volt current leaves thelower power station through six lead-coveredcables laid in clay pits. Upon reaching the citythe voltage is reduced to 120 volts for lightingby transformers placed in cylindrical housingsat convenie
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
