. Electric railway journal . Section B~BINTERBOROUGH POWER PLANT—FIG. 6—GENERAL LAYOUTOF TURBINE UNIT and 2 ft. 6 in. below Exterior Street, which lies betweenthe plant and the river. Extending across the west endof the building is a vault 18 ft. wide divided into twoparts, one for oil storage and the other for switch con-trol storage batteries. The roof of this vault servesas a roadway from street to street on the level of thelower boiler-room floor. The coal and ash-handling plant consists of twotowers on the river bank for unloading coal and storingashes, connected by bucket and belt convey
. Electric railway journal . Section B~BINTERBOROUGH POWER PLANT—FIG. 6—GENERAL LAYOUTOF TURBINE UNIT and 2 ft. 6 in. below Exterior Street, which lies betweenthe plant and the river. Extending across the west endof the building is a vault 18 ft. wide divided into twoparts, one for oil storage and the other for switch con-trol storage batteries. The roof of this vault servesas a roadway from street to street on the level of thelower boiler-room floor. The coal and ash-handling plant consists of twotowers on the river bank for unloading coal and storingashes, connected by bucket and belt conveyors with thepower plant, distributing and collecting in the mannernow standard in such plants. A feature of the towerdesign was the provision for hoisting coal from bargeswith a lVo-ton shovel just high enough to give the fallnecessary for passing it through the crushers andweighing hoppers. In the engine house were the basement, 21 ft. 6 in. 746 ELECTRIC RAILWAY JOURNAL [Vol. XLY, No. 16. INTERBOROUGH POWER PLANT—FIG. 7—CONDENSER ANDSECTIONS OF PIPING high, the operating floor, 107 ft. to the roof, and onone side three switchboard galleries, under the lower-most of which the engine-driven exciter sets wereplaced. A 50-ton electric crane traversed the lengthof this house. The important features of the switching apparatuswere the layout of group switches and the use of Gen-eral Electric motor-operated switches. There were twocomplete sets of busbars connected by bus junctionswitches to permit of the operation of the alternatorsin either two or four batteries. The feeders from onesubstation formed one group controlled by a groupswitch in addition to the individual feeder the benchboard dummy busbars were placed to givethe operator a graphic representation of theconnections. The Power Plant of 1915 The changes listed in the second paragraph, togetherwith incidental changes, will be discussed in the order-therein followed. The turbines, fully lagged, will ap
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