. The Street railway journal . th of the road is a feed wire of300,000 circ. mils. Taps to the trolley wirefrom this feeder are made every 1000 ft. Gen-eral Electric lightning arresters are placedevery 2000 ft. Every fifth pole is numberedfor the convenience of the operating depart-ment in reporting troubles and making 26,000-volt high-tension transmission linebetween the main power house and the sub-stations is carried on Locke brown porcelaininsulators, placed 3 ft. apart on a triangle,as seen in Fig. 8. The telephone wires, two 12$ STREET RAILWAY JOURNAL. [Vol. XXIII. No. 4. in nu
. The Street railway journal . th of the road is a feed wire of300,000 circ. mils. Taps to the trolley wirefrom this feeder are made every 1000 ft. Gen-eral Electric lightning arresters are placedevery 2000 ft. Every fifth pole is numberedfor the convenience of the operating depart-ment in reporting troubles and making 26,000-volt high-tension transmission linebetween the main power house and the sub-stations is carried on Locke brown porcelaininsulators, placed 3 ft. apart on a triangle,as seen in Fig. 8. The telephone wires, two 12$ STREET RAILWAY JOURNAL. [Vol. XXIII. No. 4. in number, are carried on glass insulators mounted on an ironbracket opposite the trolley bracket. The diagram showing thepower transmission and distribution scheme of the road is givenin Fig. 9. The main power station is at Lebanon, with sub-stations at points about 16 miles apart. POWER PLANT AND SUB-STATIONSThe power plant at Lebanon, Figs. 10, 11, 12 and 13, is alarge fire-flash brick structure of the flat-roof type. The engine. FIG. C—VIEW FROM TOP OF BIG CUT ACROSS WHITE RIVER VALLEY room is 60 ft. x 130 ft., and the boiler room has the same dimen-sions. There is a steel stack 155 ft. tall, 9 ft. at the base, andwith a 6-ft. 6-in. opening at the top. The bottom section is7-16 in., middle section ft in., and top section ^ m- Theengine room has two Hamilton-Corliss cross-compound con-densing engines, 24 ins. and 48 ins. by. 48-in. stroke. Eachdrives a General Electric 800-kw, 25-cycle, three-phase gen-erator, running 107 r. p. m., having a 16-ft. fly-wheel weighing90,000 lbs. These generators (Fig. 11) give 370 volts to 400volts at their terminals, and this voltage is suitable to supplydirectly the alternating-current end of the rotary convertersin the power station, which are used to feed the trolley line nearthe station. The engine room is on a level with the boiler room, and itsauxiliary room, or basement, contains three Wheeler surfacecondensers, designed to cordense 22,00
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
