. The Street railway journal . FIG. 23.—LOCOMOTIVE WITH FREIGHT TRAIN Thompson said some years ago. During the entire period ofthree and a half years of the trial runs and normal service noman was killed by the high voltage used on the railway. Theonly accident that occurred was the death of the constructorof the exploiting company, in Colico sub-station, but this had Valtellina line, although the periodicity was not more thanfifteen, the railway company was obliged to erect separate in-sulated return wires for all telegraph and telephone lines run-ning parallel with or near the railway line.
. The Street railway journal . FIG. 23.—LOCOMOTIVE WITH FREIGHT TRAIN Thompson said some years ago. During the entire period ofthree and a half years of the trial runs and normal service noman was killed by the high voltage used on the railway. Theonly accident that occurred was the death of the constructorof the exploiting company, in Colico sub-station, but this had Valtellina line, although the periodicity was not more thanfifteen, the railway company was obliged to erect separate in-sulated return wires for all telegraph and telephone lines run-ning parallel with or near the railway line. Later on differentmethods were adopted to permit the operation without return. FIG. 24.—RUN SHEET BETWEEN ARDENNO AND COSIO nothing to do with the adoption of the high tension for theoperation of the railway, and would have happened for thesame reasons in any high-tension transformer station. But the service on the Valtellina line has shown that in rail-way operation any security desired can be attained with thehigh-tension three-phase equipment, supposing that it is de-signed properly. After the first period of difficulties the pres-ent service is quite satisfactory. In the first year of the regu-lar service considerable trouble was caused by the oil gettingto the windings of the motor, but after repairing the damagedinsulation and providing for a hermetical closing, no furtherrepairs were necessary; in fact, there has been no occasion wires, and as a matter of fact the telegraph lines along theValtellina Railway are now working on earth return with en-tire satisfaction. OPERATING COSTS As regards the operating costs of the Valtellina line, onlythose are of i
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
