. Electric railway journal . the light rails, thesubstation motor-generator units are of sizes availablefor balancing in three-wire operation with a minimumof rearrangement, and all permanent substations but onehad at least two machines. The feeder distribution isnearly all overhead. The trolley lines were originallysubdivided into very few sections, and this fact hadgiven rise to more or less inconvenience at times ofaccidental breaks in the trolley system so that the ing. Line failures are rare, and in extreme cases ofemergency everything can be paralleled on the two-wiresystem, if necessary
. Electric railway journal . the light rails, thesubstation motor-generator units are of sizes availablefor balancing in three-wire operation with a minimumof rearrangement, and all permanent substations but onehad at least two machines. The feeder distribution isnearly all overhead. The trolley lines were originallysubdivided into very few sections, and this fact hadgiven rise to more or less inconvenience at times ofaccidental breaks in the trolley system so that the ing. Line failures are rare, and in extreme cases ofemergency everything can be paralleled on the two-wiresystem, if necessary. The general method adopted for three-wire operationis the so-called sectional method, in which the alter-nate sections of any double-track or single-track lineare of opposite polarity, progressively along the line. The general method of sectioning followed is to setoff three zones from each substation to the extremityof its feeding district, and to reverse the middle zoneof the three. A number of variations have been made. CHART 1
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
