

DETAILED STUDY OF OPERATION WITH NORMAL LOAD 73 



same losses in the line for the different values of cos <, the weight of 

 the line-copper will have to vary. 



The cost, in francs, 1 of the line-copper, when there is no compen- 



'on, is 



(' 



and, when there is compensation, it is 



O 



I 2 



- 



cos 9 



COS 2 </> 



The cost of the generators, without compensation, is 



Po 



cos 9' 



and, with compensation, 



E I 



- 

 COS ( 



COS 



Finally, the cost of the synchronous motors is 



wherein 



The total saving in cost of equipment, as the result of compensa- 

 tion, will be (in francs) 1 



EJ W \ (Iw+i) 2 +(Iw tan <j&-/) 2 ' 



COS 



+ 



, 



cos 9 



tan 



COS (j) 



. . (29) 



1 The corresponding cost value in dollars will be given by the same formula 

 by introducing the factor 0.20 in the formula. The same remark applies to all 

 the formulae which follow in which cost-values are given in francs. 



