. The Street railway journal . ^[i-rct Rfj. Journal FIG. 3.—TYPICAL A. C. TRACK CIRCUIT, ONE RAIL GIVEN UP FOR SIGNALING PURPOSES The apparatus in each sub-station is properly protectedwith automatic and hand-operated switches, and to insureoperation, should the alternating current fail, motorgenerators taking current from the storage battery system in-stalled in each sub-station for use of traffic, will continue to S II Single VbaBe Static TraQefotmci DC-AC Motor Generator Automatic Oil Bwitch Noo Automatic Oil Switch •( DC OverloaJ Circuit Breaker l^r AC Overload Circuit Brealter /
. The Street railway journal . ^[i-rct Rfj. Journal FIG. 3.—TYPICAL A. C. TRACK CIRCUIT, ONE RAIL GIVEN UP FOR SIGNALING PURPOSES The apparatus in each sub-station is properly protectedwith automatic and hand-operated switches, and to insureoperation, should the alternating current fail, motorgenerators taking current from the storage battery system in-stalled in each sub-station for use of traffic, will continue to S II Single VbaBe Static TraQefotmci DC-AC Motor Generator Automatic Oil Bwitch Noo Automatic Oil Switch •( DC OverloaJ Circuit Breaker l^r AC Overload Circuit Brealter /] Knife Switch [Hi Oil Switch furnieheii bj Railroad Potter SupplyStation No, 10Strtct Hull way Journal 3,0(» Volt Ilkili Sijnol CitcuilB FIG. 1.—DIAGRAM OF CONNECTIONS FOR POWER-SUPPLY EQUIPMENTS FOR AUTOMATIC BLOCK SIGNALS AND INTERLOCKING Power for operating the signal system will be taken from feed the signal transmission line with alternating current, the two main power stations of the company at Port Morris and the signal system will continue to work under all condi- and Yonkers, which deliver three-phase alternating currents tions under which traffic will be operated. A synchronizer is of 25 cycles and ii,ooo volts, and from the various sub-sta- installed between the transformer and the motor-generator tions which deliver direct current at 666 volts to the third set. rail for operating purposes. These sub-stations are also The 3000-volt transmission line consists of No. o bare cop- STREET RAILWAY JOURNAL.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
