. The Street railway journal . resters, comes to the high-tension switchboard, equippedwith bayonet plug switches and compression ball it passes to the three 100-kw step-down trans-formers. In the power house the ratio of transformation is360 to 16,000. The transformers in the sub-stations weredesigned for 15,000 volts on the high-tension side, step-ping down to 360 volts on the other. As the dropon the line does not amount to .1000 volts, the directcurrent furnished by the rotaries at the sub-stations is,therefore, at a slightly higher voltage than that of thepower-house bus-bars
. The Street railway journal . resters, comes to the high-tension switchboard, equippedwith bayonet plug switches and compression ball it passes to the three 100-kw step-down trans-formers. In the power house the ratio of transformation is360 to 16,000. The transformers in the sub-stations weredesigned for 15,000 volts on the high-tension side, step-ping down to 360 volts on the other. As the dropon the line does not amount to .1000 volts, the directcurrent furnished by the rotaries at the sub-stations is,therefore, at a slightly higher voltage than that of thepower-house bus-bars. The direct current from the low-tension side of the transformers in the sub-station passesto the low-tension switchboard equipped with instru-ments and switches, and then to the collector rings ofthe 300-kw rotary. From the positive brushes of the rotarvthe current goes to the direct-current feeder panel, passingthrough ammeter and circuit breaker, and it is then con-nected to the trolley line. The negative lead is connected. October 4, 1902.] STKEKT RAILWAY JOURNAL. 565 at Oley Line, except that space has been provided for theinstallation of an S. K. C. frequency changer, which willenable the frequency to be changed to 60 cycles for lightingthe town of Boyersville. At the sub-stations water is circulated in the transform-ers by a small pump belted to the rotary, the source of water
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
