. The Street railway journal . FIG. 20.—MASTER CONTROLLER OETHIRD LOCOMOTIVE interesting from the point of view of showing that the trainruns at a speed of 60 km (36 miles) per hour on a grade per cent. WATT-CONSUMPTION OF THE VaLTELLINA LINEThe watt-consumption was measured by meters in the Mor-begno station ever since the beginning of the electrical must be borne in mind that these meters not only measurethe watt-consumption of the trains, but all the current sup-plied by the central station, ?. c, the losses in the primary andsecondary conductors, the losses in the transfor
. The Street railway journal . FIG. 20.—MASTER CONTROLLER OETHIRD LOCOMOTIVE interesting from the point of view of showing that the trainruns at a speed of 60 km (36 miles) per hour on a grade per cent. WATT-CONSUMPTION OF THE VaLTELLINA LINEThe watt-consumption was measured by meters in the Mor-begno station ever since the beginning of the electrical must be borne in mind that these meters not only measurethe watt-consumption of the trains, but all the current sup-plied by the central station, ?. c, the losses in the primary andsecondary conductors, the losses in the transformers, the con-sumption of the lighting installation in stations, also that of themotor-dynamos for charging the accumulators used for thelighting of the motor cars and that of several motors drivingthe repair FIG. 19.—CONTROLLER August 5, 1905.] STREET RAIL The total watt-consumption during a year (from July I, 1903,to June 30, 1904,) was 3,402,502 kw-hours; the total numberof ton-kilometers made during that time by electric trains was75,845,265 (including the ton-kilometers of motor cars andlocomotives), or 47,759,642 ton-miles, thus the average watt-consumption during this period has been watt-hours perton-kilometer, or watt-hours per ton-mile, in which fig-ures the above-mentioned losses are all included, as is also thewatt-consumption when shunting the trains in stations. To have a uniform basis of comparison for lines with dif-ferent grades it is often customary to employ the virtual in-stead of the real ton-kilometers. The virtual ton-kilometersare obtained by multiplying the weight of the train in tons withthe virtual length of the line—i. e., the length which a hori-zontal imaginary line would have, the energy consumption ofwhich is the same as that of the actual li
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
