. Canadian machinery and metalworking (January-June 1913). se windings to prevent lateral -Lubrication is by mean- of oilrings. The exciters, which are two in num-ber, were also supplied by Messrs. Tick-ers. They are of tlie firms standardeight-pole shunt type, of 250 kw. capa-city, and run at 400 revolutions per min-ute, giving 125 volts. They arc illus-trated in Fisr. 19, and, as this figureshows, are driven by special water-tur-bines, as before mentioned. The voltagecontrol of the alternators is looked afterby Tirrill regulators, which act on thefield of the exciters, and ar
. Canadian machinery and metalworking (January-June 1913). se windings to prevent lateral -Lubrication is by mean- of oilrings. The exciters, which are two in num-ber, were also supplied by Messrs. Tick-ers. They are of tlie firms standardeight-pole shunt type, of 250 kw. capa-city, and run at 400 revolutions per min-ute, giving 125 volts. They arc illus-trated in Fisr. 19, and, as this figureshows, are driven by special water-tur-bines, as before mentioned. The voltagecontrol of the alternators is looked afterby Tirrill regulators, which act on thefield of the exciters, and are set to com-pensate for line drop. On t lie comple-tion of the station, two further excitorsof similar capacity with those describedabove will be installed, but of a motor-driven type. The tests of the alterna-tors and excitors -were supervised byMessrs. Kennedy and Jenkins beforedespatch of the machines from England. Operating already mentioned il is intendedthat the 3, generators shall ulti-mately be operated three together, in the. FIG. 22. VIEW OF ALTERNATOR, SHOWING TURBINE GOVERNOR GEAR. I!i; 27 3,000 OIL-IMMERSED WATERCOOLED MAIN TRANSFORMER 50 form of 9,000-kw. units. The ultimatelay-out of the station as will be seenfrom Fig. 4, allows for sixteen genera-tors, so that there will be five 9, and one spare generator. At thepresent time, the whole of the apparatusis fitted for two 9,000-kw. units, with theexception that only five machines are in-stalled. The banks of three machines are CANADIAN MACHINERY to be ultimately pumped into the supplytank. If, however, the oil after reach-ing the good oil tanks is found stillto contain too much moisture, it can bepassed again, or as often as desired,through the dehydrator before beinglifted to the supply tank. The transformers have an efficiency per cent, at full load, and a regu- Mi 1S [flllrtlMMr%SBllJiWJ ? M mm FIG. 0,600 VOLT MAIN SWITCHES. arranged to work in conjunction
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19
