. The street railway review . ^-kw. static trans-formers, one 250-kw. rotary, set in the location of No. 2 in Fig. ir,and an &-kw. booster unit. The storage battery for the single sub-station has the same number of cells 264, as in the double one, butthe capacity is only 84 kw. at the hour rate and 40 amperes at the. Ill,. H liATTKRV, ,M((.lli .SLili STATION. 8-hour rate; the cells are type 9-F in tanks to hold 17-F plates. Fig. 15 plotted from data taken at the Alexandria sub-station,gives a very good idea of the work the batteries are doing. Thedotted line shows the total output
. The street railway review . ^-kw. static trans-formers, one 250-kw. rotary, set in the location of No. 2 in Fig. ir,and an &-kw. booster unit. The storage battery for the single sub-station has the same number of cells 264, as in the double one, butthe capacity is only 84 kw. at the hour rate and 40 amperes at the. Ill,. H liATTKRV, ,M((.lli .SLili STATION. 8-hour rate; the cells are type 9-F in tanks to hold 17-F plates. Fig. 15 plotted from data taken at the Alexandria sub-station,gives a very good idea of the work the batteries are doing. Thedotted line shows the total output of the station, and the solidline shows the rotary, or generator load, the difference betweenthe two being the work done by the battery. From studying thesecurves it will be seen that the battery takes almost the entire ^^^^^^ ^- ,....v ■ ,j PIG. 13—EXTERIOR ELWOOD SUB-STATION. carried entirely from the batteries, enabling the generating plantto be shut down. The current for lighting the car barns, etc., isalso taken from the batteries during this time. The operation of the batteries on this system has proved a verygreat success, and demonstrates very plainly the value of a stor-age battery equipment on suburban lines of this nature . By installing batteries in the sub-stations in this manner thero
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
