. The Street railway journal . FIG. 11.—SCHEME ADOPTED FOR FINDING THE POWER, VOLT-AGE AND AMPERAGE OF EACH PHASE Loop a-c L = Loop b-c L — . LL km = .001023km = .001037 39oi h&\ ^ M Average L = .0216 L -4- km = .001012 Henry per kilometer and line The calculation gives L-r- km = .000995 Henry (b) Trolley line (44 km wire length) at-J- 5° a-b (1 m apart) .L = .0469 L -4- km = .001064Loop a-c (2 m apart) .L = .0566 L -f- km = .001285Loop b-c (1 m apart) .L = .0483 L -r- km = .001096 Average L = .0506 L-fkm= .001148 Henry per kilometer and lineThe calculation for the loops g
. The Street railway journal . FIG. 11.—SCHEME ADOPTED FOR FINDING THE POWER, VOLT-AGE AND AMPERAGE OF EACH PHASE Loop a-c L = Loop b-c L — . LL km = .001023km = .001037 39oi h&\ ^ M Average L = .0216 L -4- km = .001012 Henry per kilometer and line The calculation gives L-r- km = .000995 Henry (b) Trolley line (44 km wire length) at-J- 5° a-b (1 m apart) .L = .0469 L -4- km = .001064Loop a-c (2 m apart) .L = .0566 L -f- km = .001285Loop b-c (1 m apart) .L = .0483 L -r- km = .001096 Average L = .0506 L-fkm= .001148 Henry per kilometer and lineThe calculation for the loops gives:a-b, L -T- km = .001085 The distance between wires la not the same at all places and averages 45 cm. FIGS. 9 AND 10.—ARRANGEMENT OF WIRES ON FIG. 12.—POTEN-TRANSMISSION AND TROLLEY POLES TIAL DIAGRAM Resistance of a single line a, b or c (average) at + J>F = 3-S5 Ohm at-f 15° C. W = 4-02 OhmResistance for the running kilometer W -\- km = OhmResistance of the rail return at _|_ C. W = OhmBy calculation we obtain for the trolley line i/-5([_:_ km = = Ohm 97-3(By accurate measurement the area was found to be sq. mm).2. Coefficient of induction f
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
