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. A report on the alternating current, single phase, interurban railway line between Bloomington and Peoria . eed of 2,400 and a General Electric 125 volt, The motor driven set consists of a similar generatordriven by a three phase, 2080 volt induction motor, The Switch Board, The switch board, which is made up of twenty-four narrowpanels, characteristic of railway practice, is located at thesouth end of the east wall so that should the building he exteddedthe board will he in the center of the wall and in plain viewof all the machines, Fourteen of the panels are u
. A report on the alternating current, single phase, interurban railway line between Bloomington and Peoria . eed of 2,400 and a General Electric 125 volt, The motor driven set consists of a similar generatordriven by a three phase, 2080 volt induction motor, The Switch Board, The switch board, which is made up of twenty-four narrowpanels, characteristic of railway practice, is located at thesouth end of the east wall so that should the building he exteddedthe board will he in the center of the wall and in plain viewof all the machines, Fourteen of the panels are used for thecity lines, two for the exciters, and the other eight for thehigh tension distribution and the generators. All of the hightension apparatus is located in the three story portion of thebuilding to the east and is connected to the operating room byone small door only. The generator leads are carried directlyto the two banks of 750 oil-insulated and water cooled trans-formers which are on the first floor of the high tension struct-ure. The leads are 700,000 circular mill paper insulated lead. 16 covered cables. The transformers are of the single phase typeand are connected in delta to raise the voltage from 2,300 voltsto 33m000 volts. The high tension leads, which are #4 harecopper wire, are carried up through concrete shutes to the motoroperated oil switches on the top floor. The high tension busesare on the second floor; they are carried in a brick bus structureand separated by concrete barriers. Two 33,000 volt transmissionlines are taken from this station, #4 bare copper wire being lightning arresters are of the air gap type and are placed onthe third floor. Current for each of the two six phase, ,rotaries is supplied from the high tension bus bars through motoroperated switches and through three ,, 33,000 to 400 volt,single phase transformers located on the lower floor of the hightension structure. These transformers have taps for starti
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