. The street railway review . urrent is received at 15,000 voltsand is stepped down through oil cooled transformers to 550 Lemont there are installed three 110-kw. transformers; inSummit, six. The motor-generators in these stations (one in Lemont and twoin Summit), are identical with those in Joliet, save for the induc-tion motor fields which arc accommodated to 550 volts instead In all three stations are installed compensators designed Ithe induction motors without the consumptii rgy in excess dam be wasted, rendered it absolutely essential that the de-mands by the rail
. The street railway review . urrent is received at 15,000 voltsand is stepped down through oil cooled transformers to 550 Lemont there are installed three 110-kw. transformers; inSummit, six. The motor-generators in these stations (one in Lemont and twoin Summit), are identical with those in Joliet, save for the induc-tion motor fields which arc accommodated to 550 volts instead In all three stations are installed compensators designed Ithe induction motors without the consumptii rgy in excess dam be wasted, rendered it absolutely essential that the de-mands by the railway upon the Economy station should be regu-lated as much as possible. To attain this end storage batteries have been installed by theElectric Storage Battery Co. at each of the three sub-stations,and Fig. 17 shows the Joliet battery room. Each battery consists of 288 cells with room therein for one-half as many more plates as have been furnished. The rated ca-pacity of the Joliet battery is 640 amperes, and of the upper bat-. he A11. \v A y T R ANSF tAKATl ECONOMY NT A TION, JOLIET. * 1 rata J? J\* a*,. LaaaaaiBllcr-cV m ill _W ■ ; -«* 17U !»».■«* -**& VJBj ^^^ HO. U w ILTKRKATOH STATION, JOLIE1 teries 480 amperes each, but all have been momentarily dischargedat double these rates. The effect of the batterii s is not only to regulate the demand forcurrent on the Economy Station, but to reduce the numbei ofmotor-generators necessary to take care of the railway generator sets arc running with fluctuations of only about10 per cent of their average output, instead of 100 to 150 per centas usual in an unregulated plant. Two units now handle the workof the Joliet sub-station where four would be required without abattery. The charging and discharging of the batteries is regulated in• ich tation by a motor driven booster with compound winding. Buildings. \ll car barn and sub-station buildings are as nearly fireproof1 stone) brick, concrete, steel an
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
