. The Street railway journal . from an intake in the mill race, POLE LINE AND ROADBED engines are lubricated from a central The two maingravity oiling system, which includes an overhead gravitysupply tank, receiving tank. Turner oil tiller and duplexsteam pump. GENER.^TORS AND EQUIPMENT. The two main generators are rotating field type Allis-Chalmers-Bullock machines of 700 kw capacity each, de-livering 25-cycle, three-phase alternating current at 405 854 STREET RAILWAY JOURNAL. [Vol. XXXL Xo. 21. volts when run at 107 Current for exciting therotating fields of the generator
. The Street railway journal . from an intake in the mill race, POLE LINE AND ROADBED engines are lubricated from a central The two maingravity oiling system, which includes an overhead gravitysupply tank, receiving tank. Turner oil tiller and duplexsteam pump. GENER.^TORS AND EQUIPMENT. The two main generators are rotating field type Allis-Chalmers-Bullock machines of 700 kw capacity each, de-livering 25-cycle, three-phase alternating current at 405 854 STREET RAILWAY JOURNAL. [Vol. XXXL Xo. 21. volts when run at 107 Current for exciting therotating fields of the generators is obtained either froma 50-kw, i20-volt generator direct connected to a simpleIdeal engine, or from another generator of the same sizewhich is driven by an induction motor supplied v^^ith three-phase alternating current from the main generators. Thesteam-driven exciter unit is used when starting the plantafter a complete shut-down, and then the motor-driven unitis cut in after one or both of the main generators are in. SUBSTATION, SHOWING ENTRANCE TOWER FORTRANSTitlSSION LINE full operation. Current for station lighting is also ob-tained from these exciter units, the steam-driven machinebeing run for this purpose at night after the plant is shutdown. The main generator leads are carried under the engineroom floor on insulated brackets supported from the floorbeams to Westinghouse type B, 1200 amp. automatic oilswitches, which are operated electrically from the switch-board by A. & J. M. Anderson remote control switch oper-ating devices. The automatic feature of the oil switchesis so arranged that it may be thrown out of service whenthe machines are being synchronized; after synchronism itis of course thrown in service again. The low-tension bus-bars, which are carried on a steel framework supported onbrackets from the floor above, are connected direct to thelow potential side of the step-up transformers. The step-up transformers, located in groups ofthree on each s
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
