. The street railway review . he only pieces of machinery in the buildinghaving reciprocating motion. The two main generating units consist of Westinghouse-Parsonsturbines direct connected to 400-kw. Westinghousc generators run-ning at r. p. m. and generating current at 13,200 volts, 7,200alternations. These are believed to be the first small turbine unitsbuilt to generate current for 13,200 volts. These turbine units aresupplied with -Mberger condensers of the dry vacuum system condensers arc erected alongside of the turbines on the mainfloor and occupy as much or more space
. The street railway review . he only pieces of machinery in the buildinghaving reciprocating motion. The two main generating units consist of Westinghouse-Parsonsturbines direct connected to 400-kw. Westinghousc generators run-ning at r. p. m. and generating current at 13,200 volts, 7,200alternations. These are believed to be the first small turbine unitsbuilt to generate current for 13,200 volts. These turbine units aresupplied with -Mberger condensers of the dry vacuum system condensers arc erected alongside of the turbines on the mainfloor and occupy as much or more space than the entire generatingunil. The maximum overall length of the turbines is 12 ft. 4 in., themaximum width 4 ft. 6 in. and maximum height 7 ft. 6 in. The totalweight of the turbine is 20,000 lb. These figures include only theturbine itself and not the generator direct connected to it. Exceptfor the air pumps which are connected to the condensers it is diffi-cult to see any motion of machinery in the station, even when it is. AUXILIARY MACHINES. ill full operation as the generator armature revolves so rapidly thatthe motion is unnoticeable. The condensers are fitted with lo-in. suctions and each con-denser has 2,000 sq. ft. of cooling surface. The circulating pumpshave 4-in. suction pipes. The circulating water is handled by two 74 STREET RAILWAY REVIEW. [Vol. XV, No. 2 pumps operating at 2,400 r. p. m. ilrivin by 8-h. p. De Laval tur-bines which run at r. p. m. .\ separate view is given herewith of the two exciter units andone of the circulating pumps, all of which arc driven by small DeLaval turbines and the small size of these units is very noticeable,occupying as they do but three or four square feet of floor two are each of 20-kw. capacity and generate at 125volts; the turl)inc speed is 24,000 r. p. m. The switchboard is located at one end of the generator room suction and discharge pipes are carried in tliis same duct with thehigh tension wirin
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
