. The Street railway journal . e two feed pumps of theKnowles duplex type, 6 ins. x 10 ins. x 12 ins. in water is discharged by the pumps through a Berrymanfeed-water heater, 36 ins. in diameter, provided with the usualby-passes for both the exhaust steam and the feed-water. The way work and for light and power, and for the latter there aretwo high and two low bus-bars and one common neutral buson the lighting panels, the Edison system of distribution beingemployed. Alternating current is also furnished, and besidesthe generator and exciter panels the switchboard has ten rail-way
. The Street railway journal . e two feed pumps of theKnowles duplex type, 6 ins. x 10 ins. x 12 ins. in water is discharged by the pumps through a Berrymanfeed-water heater, 36 ins. in diameter, provided with the usualby-passes for both the exhaust steam and the feed-water. The way work and for light and power, and for the latter there aretwo high and two low bus-bars and one common neutral buson the lighting panels, the Edison system of distribution beingemployed. Alternating current is also furnished, and besidesthe generator and exciter panels the switchboard has ten rail-way feeder panels, ten Edison system panels, and two alter-nating-current panels. The unusual feature is presented of awater-power station situated almost at the center of its load,two-thirds of it being located within a radius of ll/t miles. Onthis account the three-wire system of distribution was adopted,235 volts for light and 470 volts for power, reserving the alter-nating system for service outside this zone. The voltage for. INTERIOR OF AUXILIARY STEAM PLANT ON BROWNS ISLAND only steam passing through the heater is that from the dryvacuum and the feed pumps. The steam pressure is 150 lbs. per square inch, and extraheavy wrought-iron flanged pipe was installed for all the steammains. The Chapman valves are employed, and the high-pres-sure mains and pipes are drained into the boilers by means ofthe Holly system. The steam header is 14 ins. in diameter andthe exhaust header 36 ins. In addition to the machinery described, there are two drain-age pumps on the engine room floor, with a combined capacityof 600 gals, per minute, furnished to handle any water whichmay percolate through the masonry during freshets. A 25-tontraveling crane, built by the Whiting Foundry Equipment Com-pany, spans the engine room. Being an independent company when the work was insti-tuted, a variety of service was arranged for. The switchboards,which are situated on a gallery running around the engineroom
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
