182. ALTERNATING GENERATORS AND SYNCHRONOUS MOTORS. 
The complete calculation of the open circuit characteristic 
is embodied in Table 20, and its result is given in Fig. 81. 
346. Short Circuit Characteristic.—The constant of the 
short circuit characteristic k, will be found equal to 
LACHIAITON lV AMPED TUS. 
- 2000 ... spo __dovo : 
& ay? S 
.- eae 
EY oof Pr we S 
* ais : 
: : a aGiii A600 
N (200 gi [Oe ed a Be i oe | res S 
S WA Pest ee ee my S 
ZO te ~F 
&Q <= Ey 8 8 ~~] a x00 
Q i a i tie Lz ieee e 4 
/ / 
1 f 7 
\ ed FA 
‘ ¢ 7, 
‘ / 
\\ rg 
Sy yj e4 
Fie. 81.—CHARACTERISTICS OF 300 KVA , 375 Revs., 25-CYcLE, 
3-PHASE ALTERNATOR. 
4 : eee 
1+ - = 1.12, say, 1.15, r. being calculated as a and 
a 0.313 —6t; 
"4S L75X12X2.07 4X 1L.75X1.32(18.542.07) 4, 10%; 
075X185 LS 5 MSOF oe : 
that is, the normal current will appear in the short 
cirevited armature for an excitation of 26,200 x 115 = 
30,000 total ampere turns, or 3,750 ampere turns per 
pole, see Fig. 81. 
347. Load Characteristic.—The determination of ‘the load 
