. Cassier's magazine . h a 3-phase 60-cycle current, each generator carry-ing its own exciter. An interestingfeature of the installation, however,is that the controlling switchboard isso arranged that any exciter may beused to actuate any generator. Asmost of the power is intended to beutilized at a considerable distancefrom the stations, provision has beenmade for a series of transformerswhich will increase the voltage from11,000 to 30,000 volts, where it is tobe carried a maximum distance of 40miles, but the transmission lines willextend as far as 75 miles from theriver, and above the 40-mil
. Cassier's magazine . h a 3-phase 60-cycle current, each generator carry-ing its own exciter. An interestingfeature of the installation, however,is that the controlling switchboard isso arranged that any exciter may beused to actuate any generator. Asmost of the power is intended to beutilized at a considerable distancefrom the stations, provision has beenmade for a series of transformerswhich will increase the voltage from11,000 to 30,000 volts, where it is tobe carried a maximum distance of 40miles, but the transmission lines willextend as far as 75 miles from theriver, and above the 40-mile limit thevoltage will be raised to 60,000. It is calculated that the textileplants alone utilizing the power willconsume the maximum quantity whichwill be generated at the three sites,for over fifty such plants are within aradius of 75 miles from the watercourse. The project, therefore, pre-sents an illustration by which thecost of operating steam-driven mills,such as the ones located in this sec- HYDRAULIC POWER 397. SETTING THE 16-TON BLOCKS IN THE FOUNDATION OF THE ROOSEVELT DAM tion of the South, can be contrastedwith similar plants operated by electricpower from an isolated station. Be-fore beginning work the company, ofcourse, calculated the cost of currentand its transmission to the factoryas compared with the cost of coal for steam fuel and other expenses inci-dental to steam power. The averagecost of developing horse-power withsteam coal in this section of the coun-try ranges from $35 to $50 per year,based on the price of fuel alone. Thecalculations of the engineers of the 398 CASSIERS MAGAZINE
Size: 1385px × 1804px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyork, booksubjec
