750 ORGANIZATION AND OPERATION 



" Water," " Main Units," " Cycles," " Power-factor," " Excit- 

 ers," " Transformers and Floodgates." These items are listed 

 vertically and the sheet is divided into 24 vertical columns, one 

 for each hour. At the top are given the " Forebay " readings and 

 " Tailrace " readings, the difference between which gives the 

 " Effective Head." Immediately below are listed the indicated 

 kilowatts and per cent gate opening of each generator in service, 

 following which are given the " Total Indicated Kilowatts " 

 and " Total Per Cent Gate." The total kilowatt hours during each 

 hour, as read from the watt-hour meters, is plotted as a block 

 curve extending across the face of the sheet. 



This serves as a better record for the actual station output 

 than the indicated kilowatts. It has been found necessary, 

 however, to follow the indicated kilowatts to serve as a check 

 on the efficiency and condition of the units in general, from time 

 to time, as well as to determine what capacity would be required 

 for short interval peaks. The station voltage is also plotted as a 

 block curve across the face of the sheet. 



The exciters from an individual group, and for each exciter 

 the voltage current and per cent gate opening are recorded. 



Transformer records are limited to the temperatures. These 

 are taken hourly, at which time the oil elevation is noted but not 

 recorded. If the transformer is not in service the column in 

 which the temperature is listed is left blank. If in service the 

 temperature is taken and recorded. 



Under the item, " Floodgates " the total opening of the flood- 

 gates in feet is recorded, rather than each one separately. This 

 record is maintained daily, the flow of the river at each of the 

 stations being followed very closely. 



At the bottom of the sheet appear the daily readings of the 

 various generator and feeder watt-hour meters taken at mid- 

 night of each twenty-four hours. The following items are also 

 recorded at the bottom of the sheet: " Total Generated," or the 

 total output of the station for twenty-four hours; the " Maximum 

 Hour Time," or the maximum kw.-hr. of any particular hour 

 during the day; the " Maximum Kw. Time," or the maximum 

 indicated kilowatts at any particular instant; the " Average 

 Load," obtained by dividing the total kilowatt hours generated by 

 24; the " Load Factor," obtained by dividing the " Average 

 Load " by the " Max. Kw. Time"; the " Average Flow of the 



