. Electrical world. nchronizeris used to indicate when synchronism is obtained between the twoalternators, and they are then thrown together. After they arethrown together a clutch connecting the Russell engine with the lineshaft is opened, so that the engine can be stopped. The line shaftruns through the driven pulley of this engine in a quill. The 300-kwalternator which was a moment before running as a generator isnow running as a synchronous motor driving the line shaft. Thatportion of the shaft being run by the Ball engine is now connectedby a clutch to that portion of the shaft which is b
. Electrical world. nchronizeris used to indicate when synchronism is obtained between the twoalternators, and they are then thrown together. After they arethrown together a clutch connecting the Russell engine with the lineshaft is opened, so that the engine can be stopped. The line shaftruns through the driven pulley of this engine in a quill. The 300-kwalternator which was a moment before running as a generator isnow running as a synchronous motor driving the line shaft. Thatportion of the shaft being run by the Ball engine is now connectedby a clutch to that portion of the shaft which is being run by the300-kw sjTichronous motor. The clutch on the Ball engine is thenthrown out and the Ball engine stopped. The line shaft is thenbeing driven by the 300-kw synchronous motor, which in turn issupplied with power from the i,soo-kw turbo-alternator. The lineshaft is running the generators for 500-volt power service and streetrailway service. In the afternoon, when the direct-current series arc service is to. Fig. -Elev.\tion of Ste.\m Piping. gency, when the boiler pressure falls, to open a by-pass valve so asto increase the pressure on the exciter unit and keep the excitingcurrent up to its normal value, even though the speed of the gen-erator is decreased. The same thing can be done with the vacuumand circulating pumps so that the vacuum will not be reduced. The expense for oil has been reduced over 50 per cent, by therunning of the turbine as compared with the engines in spite of thefact that at all times three auxiliary engines are operated. . to longruns, two of the hardest months in the year, November and December,the turbine was operated almost 1,500 hours without stopping. Itwas then stopped to clean out the surface condenser. Another advantage this company has noticed in its turbine overengines, and a point that has not been usually considered, is thatthe turbine will maintain its speed and run at one-half its capacitywith steam pressure at the boilers as l
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
