. The street railway review . ll transmission and station losses. All sta-tions are connected by a private telephone line whichruns on the d. c. pole line, so that communicationmay be had at any time with any station. The entire electric equipment was furnished andinstalled by the Wcstinghouse Electric & Co. and represents the latest type of its ap-paratus in every respect. Daily record sheets are also kept at all sub-sta-tions. A copy of one of these (that of Utica sub-station) appears here. The readings are taken every fifteen minutesby the station operator and plotted on the
. The street railway review . ll transmission and station losses. All sta-tions are connected by a private telephone line whichruns on the d. c. pole line, so that communicationmay be had at any time with any station. The entire electric equipment was furnished andinstalled by the Wcstinghouse Electric & Co. and represents the latest type of its ap-paratus in every respect. Daily record sheets are also kept at all sub-sta-tions. A copy of one of these (that of Utica sub-station) appears here. The readings are taken every fifteen minutesby the station operator and plotted on the log sheet, which is suitablyruled for the purpose. The sheet is arranged to show the total loadreadings a. c. voltmeter, and d. c. voltmeter readings at the station,and is divided into rectangles representing one hour each on thehorizontal scale and 250 amperes and 50 volts respectively on thevertical scale. These rectangles are subdivided horizontally intofour fifteen-minute squares and vertically into five squares rep-. INTBRIOR OF FR.\NKFORT SUB-STATION. resenting 50 amperes each for the load curve and ten vohs eachfor the a. c. and d. c. voltage curves. The hours are printedat the top of the sheet, the curves beginning at 4:00 a. hours representing the afternoon are in full faced type. Acurve arranged in this way represents graphically the work done ateach station ,-uid enables a close check to be kept on that stationsoperation. Operators do not plot swing readings so that with thedead beat type of instruments used the curves give a very accurate Oct. 20, 1903.] STREET RAILWAY REVIEW. 779
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