. The Street railway journal . machines generate current at6500 volts and 60 cycles per second. The high and low-pressure cylinders of the engines are 36 ins. and 71 ins. indiameter, respectively, by 42 ins. stroke, and they aresteam jacketed. Each exciter set consists of a three-phaseinduction motor driven direct by current supplied by themain generators at 6500 volts, and coupled to low-tension units, but two only are to be installed at first, together withsix batteries of boilers, making an available capacity of12,000 hp. Running over the whole length of the housewill be a coal bunker of ab
. The Street railway journal . machines generate current at6500 volts and 60 cycles per second. The high and low-pressure cylinders of the engines are 36 ins. and 71 ins. indiameter, respectively, by 42 ins. stroke, and they aresteam jacketed. Each exciter set consists of a three-phaseinduction motor driven direct by current supplied by themain generators at 6500 volts, and coupled to low-tension units, but two only are to be installed at first, together withsix batteries of boilers, making an available capacity of12,000 hp. Running over the whole length of the housewill be a coal bunker of about 5000 tons capacity. Thiswill be equipped with electrically-driven Hunt coal con-veyors. The boilers will be of the Babcock & Wilcox typeand will be equipped with Babcock superheaters, whichwill give a superheat of not less than 120 degs. F. at 200lbs. pressure. Each boiler will be capable of evaporatingnot less than 20,000 lbs. of water with 5700 sq. ft. of heat-ing surface and will be the largest boilers that the Bab-. FIG. 2.—INTERIOR OF NEW QUEENS ROAD CAR HOUSE shunt-wound generators. The auxiliary engine sets con- cock & Wilcox Company has so far built. Green econo- sist each of a 300-hp Willans compound engine, direct- mizers-will be used. coupled to a 200-kw direct-current generator built by the The engines will be of the vertical triple-expansion type Allgemeine Company, and are used for supplying current arranged with four cylinders and four cranks, and will run for lighting and for the various motors about the power at 75 r. p. m. with 190 lbs. pressure superheated steam at house, as well as an alternative source of exciting current the stop valve. They will be supplied by the Wallsend for the main generators. Willans condensers are used in Slipway & Engineering Company, Ltd., of Newcastle. Cor- connection with water from the canal. There are also liss valve gear will be used. four Klein cooling towers. The leading dimensions of these engines are as follows: The
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
