TABLE HI 101 



(4) Line Power-factor at Receiver End. 



100 P 



per cent. 



+ Q 2 



P is determined from the Kw. load and Q is either read 

 from the circle diagram or calculated by means of (3). 



(5) Reactive Kva. of Load. 



EQi E m P , , 



^- = -- (a negative quantity). 

 1000 1000 



where Qi is the reactive component of the load current, 



E P 



- is the load in kilowatts at a lagging P. F. cos 0, and 



m is a constant equal to -- -. 



cos 



(6) Reactive Kva. of Synchronous Motors. 



This may be read from the circle diagram, or it may 

 be more accurately found by using the calculated value 

 of Q in the expression 



E Q , EmP 



- + - Kva. 



1000 IOOO 



When the above expression is positive, the current in the 

 synchronous motors is leading, necessitating strong exci- 

 tation of the motors. When the expression is negative 

 the current is lagging and the fields of the synchronous 

 motors are under-excited. 



(7) Line Losses, in Kilowatts. 

 Let A = E' + PR' - QX f 



(\ / V 7 V* 7 2 \ 



P +JQ) (i + + *- + etc.) 

 * * 



