. The street railway review . sizes. switchboard, which is at the west end of the engine room,is of polished black marble. It consists of three i,ooo-kw. 13,200-volt three-phase generator panels; two loo-h. p. 13,200-volt three-phase induction motor panels; one 125-volt exciter feeder panel;four 1,500-kw. outgoing line panels; one ground de-tector panel; one 75-kw. 125-volt exciter generator panel for engine-driven exciter; two 75-kw. 125-volt exciter generator panels formotor-driven exciters. The board is provided with one frequencyindicator; one Lincoln synchroniz
. The street railway review . sizes. switchboard, which is at the west end of the engine room,is of polished black marble. It consists of three i,ooo-kw. 13,200-volt three-phase generator panels; two loo-h. p. 13,200-volt three-phase induction motor panels; one 125-volt exciter feeder panel;four 1,500-kw. outgoing line panels; one ground de-tector panel; one 75-kw. 125-volt exciter generator panel for engine-driven exciter; two 75-kw. 125-volt exciter generator panels formotor-driven exciters. The board is provided with one frequencyindicator; one Lincoln synchronizer mounted on swinging bracket;seven potential transformers; twenty-seven 15,000-volt transferswitches; twelve lightning arresters; twelve lightning- llie hack of the combustion chamber is lined with fire brick 12 thickness, and the sides 4JS in. thick, and the top is covered withlire brick tile 5 in. in thickness, riie back head of the combustionchamber is also provided with steel plate \i in. in I ; ■ciM)HNSI;i!S, arrester switches; two 25-cycle loo-kw. primary 370-volt secondary three-phase oiled cooled step down high tension feeder lines arc controlled by four General Elec-tric type H motor-driven electrically operated oil switches. All high tension wires arc carried in conduits underneath thebasement floor and arc incased in lead armored cable and all alter-nating current meters in power house and sub-stations are hori-zontal edgewise type. BOILKRS. There arc 10 boilers, 500 h. p. each, of the internally fired Scotchmarine type, manufactured by the Springfield Boiler & Maiuifactur-ing Co., of Springfield, 111. These boilers have a working pressureof 180 lb of sicam, and were tested to stand a cold water pressureup to 225 lb. per scj. in. They arc 10 ft. 6 in. in diameter, 19 over all. Thii includes the rear smoke box or combustionchamljcr, making the iKiilcr proper 16 ft. long. Each boiler isfitted wit
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
