. Electric railway journal . schedule speed of the cars wasto increase the capacity of substation No. 1 at BeaverValley -Junction by the addition of a 1,000-kw. rotary proposed negative feeders leading from the variouslines back to the substation and power station. Thetotal amount of copper in the system including thesefeeders would be 1,050,000 lb., requiring an investmentof $262,500. In order to reduce the investment in feeder cables, asecond plan was considered. This contemplated the in-stallation of two additional substations and reduced thetotal investment required for feeders, but when t
. Electric railway journal . schedule speed of the cars wasto increase the capacity of substation No. 1 at BeaverValley -Junction by the addition of a 1,000-kw. rotary proposed negative feeders leading from the variouslines back to the substation and power station. Thetotal amount of copper in the system including thesefeeders would be 1,050,000 lb., requiring an investmentof $262,500. In order to reduce the investment in feeder cables, asecond plan was considered. This contemplated the in-stallation of two additional substations and reduced thetotal investment required for feeders, but when thewages of six operators, three for each substation, werecapitalized, the first plan proved to be more economical. It was evident that the second plan, with the greatlyreduced amount of feeder cables and the additional sub-stations, would be advantageous both from the stand-point of investment and of economy of operation provid-ing the cost of attendance could be eliminated. About 740 Electric Railway Journal Vol 55, No. 15. FIG. 2—PROPOSED FEEDER AND NEGATIVE RETURN SYSTEM, SHOWING ADDITIONAL FEEDERS WHICH WOULDHAVE BEEN NECESSARY TO BRING LINE LOSS DOWN AND PROVIDE SUFFICIENT OPERATING VOLTAGE UNDERFIRST PLAN OF INCREASING CAPACITY OP BEAVER VALLEY STATION. TOTAL AMOUNT OF COPPER. 1,050,000 LB. 1. Insulated return to power house from Belt 14. line, insulated Insulated return to power house from Sixth 15. Avenue hne. insulated. 3. Insulated return to power house from Uni- 16. line, 1, insulated. 4. Insulatffl return to power house from Ing-er- ^^oU line, insulated. 17. 5. Insulated return to power house from Clark Street Une. 500,000 insulated. 6. Insulated return to power house from West 18. Side loop. insulated. 7. Insulated return to power house from East 19. Side loop, ,000 insulated. 8. Insulated return to power house from Fort Des Moines hne, 1.
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