. The design of a hydro-electric plant at Ottawa, Illinois . he motor~generator of one unit x - .383. X 450 - 383. For the cost of tv^o machines then the price will be |>10, the auxiliary motor-generator set the additional cost Induction ^ motor cost 115 x 116 -1- X 71O$3466, of the direct current generator f5,042,00Total cost of motor-generator set $ Then the total cost for all the e-citer units is^l8, The floor space neededfor these units is 10 feet x 7 feet. Thefoundations for this installation is to
. The design of a hydro-electric plant at Ottawa, Illinois . he motor~generator of one unit x - .383. X 450 - 383. For the cost of tv^o machines then the price will be |>10, the auxiliary motor-generator set the additional cost Induction ^ motor cost 115 x 116 -1- X 71O$3466, of the direct current generator f5,042,00Total cost of motor-generator set $ Then the total cost for all the e-citer units is^l8, The floor space neededfor these units is 10 feet x 7 feet. Thefoundations for this installation is to be made of solid concrete 10 feetdeep and massive enough to keep down excessive vibrations. Transformers. The transformers are to be three phase ,5000 The method ofcooling will be arranged for by letting the water flow thru from thereservoir out into the tailrace. The low tension side will be delta con-nected and the high tension side grounded v;ye. The voltage transformationwill be from 6600 to 66000 volts. The cost of one transformer - .36, 37. The cost then for seven is $47,600,00 An extra transformer is tobe kept on hands so that it can be used to replace any one of the othersthat nay burn out. Oil Switches, The oil sv/itches v/ill be separate units. There will be six on thehigh tension side and six on the lov: tension side. They v/ill be operatedby a snail notor controlled from the renote sv/itch-board roon. In usingboth oil sv/itches on the lovr and high tension sides it makes it possibleto have the generator feed thru the Iot; tension bus bars and out to thetransmission line \7ithout having to go thru the transformer that is usedfor that units. Also it can be so arranged that the generator and thetransformer can be used as one unit and synchronized on the high tensionbus. This gives a very flexible system v/hich is needed in case of a breakdovm of any unit in the plant. Cost of the oil switches high tension $10, of the oil switches low tension $
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