. The Street railway journal . FIG. 4.—MOTOR WITH CASE OPEN—ZURICH ELECTRIC RAILWAY,lowance of 25 per cent, increase for starts and curves, this 931,000. corresponds to an average output of X 54X60X75 effective h. p. per car measured at the car axle. The average loss from the steam engine to the carwheel can be taken at 35 per cent., and therefore the effi-ciency comes out 65 per cent. For a twelve minute run (five cars) we have therefore -5 X = h. p.; and for a six minute run (nine cars) 9 X 4-79 _ ^ H FIG. WITH CASE CLOSED-ZURICH ELECTRIC RAILWAY. of the gen
. The Street railway journal . FIG. 4.—MOTOR WITH CASE OPEN—ZURICH ELECTRIC RAILWAY,lowance of 25 per cent, increase for starts and curves, this 931,000. corresponds to an average output of X 54X60X75 effective h. p. per car measured at the car axle. The average loss from the steam engine to the carwheel can be taken at 35 per cent., and therefore the effi-ciency comes out 65 per cent. For a twelve minute run (five cars) we have therefore -5 X = h. p.; and for a six minute run (nine cars) 9 X 4-79 _ ^ H FIG. WITH CASE CLOSED-ZURICH ELECTRIC RAILWAY. of the generating plant, then the storage battery assiststhe plant; if, on the contrary, the consumption falls belowthe capacity of the latter, the surplus of the current pro-duced by the dynamo flows into the storage battery andcharges it. The plant, therefore, runs at its normal ca-pacity, that is to say, under the most favorable conditionspossible. In regard to the advantages of using storage batteriesin parallel with the generator, the Oerlikon Works Com-pany submits the following computation: The average grade on the Zurich electric railway which is th
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Keywords: ., bookcentury1800, bookdecade1880, bookidstreetrailwa, bookyear1884
