Publisher's Synopsis
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 edition. Excerpt: ...1. "The most important step is to maintain the rails perfectly bonded, so that the tracks form continuous electrical conductors/' (140) 2. 'Limit the radius from the power station to which the station supplies electric power, so that the currents do not have to be returned from excessive lengths of rails to any one power station. This is usually accomplished in practice by supplying power to electric railways from distributed sub-stations." (140) 3. "Remove current from rails wherever there is concentration of current, by means of insulated return feeders." (140) 4. "The return feeders should be proportioned for constant drop, so that the rails at all points where return feeders are connected are maintained at substantially the same potential under average load conditions." (140) 5. "The rails immediately in front of the power station must not be connected directly to the negative bus-bar, unless a resistance corresponding to the average resistance of the return feeders is connected in the circuit." (140, . 6. "The rails must not be bonded to any other underground structures." (91) 7. "The.return conductors should have a cross-section at least equal to that of the outgoing conductors." (91) 8. "Each return conductor must be provided with either an adjustable resistance or a negative booster, so that the product of current and resistance may be made the same for all conductors." (91) 9. "By connecting a voltmeter, it must always be possible to determine the potential of all the points where return conductors are connected to the rails, and points of relatively highest potentials in the rail network." (91) 431 Importance of Proper Copper Distribution in..."
