File:The street railway review (1891) (14575059567).jpg

Identifier: streetrailwayrev11amer (find matches)
Title: The street railway review
Year: 1891 (1890s)
Authors: American Street Railway Association Street Railway Accountants' Association of America American Railway, Mechanical, and Electrical Association
Subjects: Street-railroads
Publisher: Chicago : Street Railway Review Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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with less fluctuation. The economy at-tendant upon this feature alone in the writers judgment is suf-ficient to compensate for the apparent expense attendant upon theinvestment. The question as to location of a sub-battery station is one of pe-culiar interest. I will, therefore, dwell upon this point quite fully.The determination of the most economical point to locatea sub-station battery is one requiring careful calculation. Thereare several constants entering into the calculation, which are purelya question of engineering judgment, siich as loss or drop in volts,ampere flow and particularly the distribution of the loss or drop involts. Experience has indicated the necessity of having an independentfender line running from the main power station to the sub-batterystation, the line then being fed from feeders running from the sub-station. The chief reason for the feeder running independently from r28 DAILY STREET RAILWAY REVIEW. (Vol. XT, No. 4. uit Bi-cakvrs—»• 1, 1. 1, 1, 1. 1
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the power station to the sub-battery station is to be able to chargethe battery without interfering with the line. The following skech, Fig. 4, illustrates quite clearly the methodas practiced by the writer. The letters on the diagram have thefollowing meaning: A—main power station. B^sub-battery house. C—automatic magnetic circuit breaker. D—extreme end of the sub-feeder away from the station. E—point on line at sub-station battery house where connection ismade. C 71 ^ Negative to ground I Negative to ground F—independent feeder running from power station to sub-batterystation having no taps or connections of any kind between the twostations. This feeder may be boosted either by booster, or run ona generator at a higher voltage, or off a bus bar of a switchboardoperating on different voltages. G—ordinary feeder running out of the station from which tap*are made to trolley as in the usual construction. This feeder shouldrun to join feeder. H—sub-battery station feeder ru

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