. Electric railway journal . 6-in. butterfly valves in the connectionsare among the largest of this type ever built. Facilities for overhauling the apparatus and for makingrepairs are given by a hand-operated crane which spans thebuilding. The current from the generators is led by cables in floorconduits to two sets of busbars with switches so arrangedthat either bus can have any combination of generators andtransformers connected through it. From these busbarsthe current passes to be transformed to higher part is raised to 6600 volts for transmission to the NewEngland Lime Companys
. Electric railway journal . 6-in. butterfly valves in the connectionsare among the largest of this type ever built. Facilities for overhauling the apparatus and for makingrepairs are given by a hand-operated crane which spans thebuilding. The current from the generators is led by cables in floorconduits to two sets of busbars with switches so arrangedthat either bus can have any combination of generators andtransformers connected through it. From these busbarsthe current passes to be transformed to higher part is raised to 6600 volts for transmission to the NewEngland Lime Companys plant at Boardmans Bridge, anda little later this line, operating at 11,000 volts, will bothserve the lime company and furnish current to the New Mil-ford Electric Light Company. By far the larger propor-tion, however, is stepped up through six 850-kw single-phase water-cooled transformers to 33,000 volts, at whichpotential are operated the lines to Waterbury, 27 milesaway, and to New Britain, 50 miles distant. As there are. Connecticut Power—Waterbury Substation seven transformers, much leeway is given for emergenciesand repairs. TRANSMISSION LINE FROM BULLS BRIDGE The transmission line consists of two three-wire circuitsof stranded aluminum, those to Waterbury having conduc-tors ]A in. in diameter, each circuit having its separate andindependent pole line, except for thirteen poles in Wasfi- March i, 1913.] ELECTRIC RAILWAY JOURNAL 067 ington, where right-of-way troubles compel the use of oneline of poles for both. The poles arc chestnut, the majoritybeing 35 ft. long, the wires forming an equilateral triangle60 in. on a side where but one circuit is on a pole, the tri-angle being 48 in. with two circuits. The insulators are designed for a working potential of45,000 volts and are carried on an oil-treated oak pole toppin 3 in. square by 20 in. long, and by a 4-in. x 5-in. two-pincross-arm. On angles the pole pin is replaced by a shorttwo-pin arm set parallel to the general
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