. The street railway review . The transformers are in a smallbrick building outside the power house. After leaving the transformers the current passes to the transmis-sion line consisting of three No. 6 copper wire. The lines are car-ried on double petticoated glass insulators which are on the same poles supporting the Creaghead trolley arm brackets, as may beseen in some of the illustrations of the track. It was thought thatthese glass insulators would not stand a potential of 8,000 volts, butso far there has been no trouble with them. The transformer sta-tion is located about eight miles up
. The street railway review . The transformers are in a smallbrick building outside the power house. After leaving the transformers the current passes to the transmis-sion line consisting of three No. 6 copper wire. The lines are car-ried on double petticoated glass insulators which are on the same poles supporting the Creaghead trolley arm brackets, as may beseen in some of the illustrations of the track. It was thought thatthese glass insulators would not stand a potential of 8,000 volts, butso far there has been no trouble with them. The transformer sta-tion is located about eight miles up in the niouiVtains. The voltageis here reduced through two VVestinghouse static transformers to400 volts, and the circuits from the transformers are connectedthrough the switchboard to the alternating current end of a rotaryconverter shown on page This converter is practically the samei;..-ichii]e as the generator with the addition of a starting motor onthe end of the shaft. The motor is of the Tesla rotating field type. ALTERNATINC-niRECT CURRENT (lENERATOR. and lis function is to get the armature of the converter up to speed r in synchronism with the generator. The direct current is fedMilo the trolley wire, no feed wire being necessary. The trolley■\ is No. coco round section. The diagram of the circuits of thepower station, transmission lines and sub-station is shown each generator and converter there arc a direct ammeter, a di-rect current voltmeter, an alternating current voltmeter and am-meter, all Weston of the switchboard panels, which are all of white marble, are
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
