. Electrical world. thirdstations was reached before the middle of 1891, when 64 dynamoshad all been installed, giving a capacity of 3,840 kw. A third gen-erating station was then seen to be necessary and a site on theharbor front at the foot of Pearl Street, between Atlantic Avenueand the water was selected. This site had the advantages not pos-sessed by the first and second stations, of sea water for condensingpurposes, and of the direct delivery of coal from vessels. Groundwas broken ior the third or Atlantic Avenue station on October 10, 1891, on the site just mentioned where English tea s
. Electrical world. thirdstations was reached before the middle of 1891, when 64 dynamoshad all been installed, giving a capacity of 3,840 kw. A third gen-erating station was then seen to be necessary and a site on theharbor front at the foot of Pearl Street, between Atlantic Avenueand the water was selected. This site had the advantages not pos-sessed by the first and second stations, of sea water for condensingpurposes, and of the direct delivery of coal from vessels. Groundwas broken ior the third or Atlantic Avenue station on October 10, 1891, on the site just mentioned where English tea ships were un-loaded free of charge almost llS years earlier; that is, on December16, 1773. This third station began operation in the latter half of 1892, and in its equipment as in its location it differed much fromthe two earlier plants. The boilers were all of the Babcock & Wil-cox water tube type, and each had a water heating surface of 3,680sq. ft. and was rated at 368 hp. Instead of small horizontal, high-. FIG. 19.—SWITCH HOUSE, THIRD ST.\TION. speed, simple, non-condensing, belted engines, like those at the firstand second stations, the engines at the third station were of thelarge slow-speed, vertical, triple-expansion, condensing, direct-con-nected type. Each of the first four engines installed at this third station hadthree vertical cylinders, carried a dynamo at each end of its shaft,and was rated at 660 hp with 120 and 160 pounds steam pres-sure. These engines were built by the J. Morgan Poole Company. Two multipolar dynamos were connected at opposite ends of theshaft at each of these four engines. Each dynamo was of EdisonGeneral Electric make, had 14 poles, was rated at 200 kw, and de-veloped continuous current at 160 volts. This voltage of 160 for thedynamos at the Atlantic Avenue station was adopted in order toprovide for the loss of pressure in the feeders between this stationand the greater part of the service area of the Edison system atthat time. Th
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
