. Electric railway review . cross-compound Allis-Chalmers en-gines, each having on its shaft the revolving field of a 1,500-kilowatt, 25-cycle, 3-phas3, 13,200-volt General Electric alter-nator, also four 32 and 68 x 48-lnch similar engines 600-volt. General Electric railway eight units operate at 94 revolutions per minute andall electrical apparatus is designed for its rated temperaturerise to have a room temperature of 40 degrees centigraderather than 25 degrees as is more common practice. The 386 ELECTRIC RAILWAY REVIEW July, 1906. foundations for the
. Electric railway review . cross-compound Allis-Chalmers en-gines, each having on its shaft the revolving field of a 1,500-kilowatt, 25-cycle, 3-phas3, 13,200-volt General Electric alter-nator, also four 32 and 68 x 48-lnch similar engines 600-volt. General Electric railway eight units operate at 94 revolutions per minute andall electrical apparatus is designed for its rated temperaturerise to have a room temperature of 40 degrees centigraderather than 25 degrees as is more common practice. The 386 ELECTRIC RAILWAY REVIEW July, 1906. foundations for the several units are of solid concrete tiedtogether below the base of the floor with steel reinforce-ments and tied together at the top by reinforced ties 4feet square in section and by the reinforced concrete engine-room floor. These 4-foot ties are used as supports for thevacuum pumps of the condenser equipment. Excitation current for each of the four reciprocating,engine-driven units is furnished by a Curtis non-condensing. Commerce Street Power Plant. Milwaukee—Coal Wagon. horizontal turbine driving an exciter at 3,600 revolutions perminute and generating direct current at 120 volts addition to the engine and turbine-driven units thereare three 500-kilowatt capacity motor-generator sets with13,200-volt, 25-cycle, synchronous motors driving 2,300-volt,60-cycle alternating-current generators. These phase-chang-ing sets increase the flexibility of the station by offering ameans for adjusting the load between the CO-cycle recipro-cating-engine-driven alternators and the 25-cycle turbine-driven alternators. There is also one motor-driven exciter
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectstreetr, bookyear1906
