ALTERNATING GENERATORS AND SYNCHRONOUS MOTORS. 21 
load characteristic, from which it is seen that the normal 
terminal pressure is located at the proper place. 
472. Short Circuit Constant.—For the calculation of the 
short circuit constant, we find from Equation, (24), the 
reluctance of the armature leakage path is equal to 
EXCTTAITON LN MEUPLEPRET OPM, 
S000 2 2000 EZ 6000 S000 
4000 L 
TERM PRESSUREIVVULTS. 
& 
S 
as 
S ee 
SHORT CLRCUT CURRENT LW AMPS. 
Fy ae t 
’ A 
a 
/ Vs P ail eZ | 24150 
\ ra Pd re 
\ yf 
#000 “ at 400 
\ =f ‘ : ‘. = Sp ae a -_-— ae 
4 a ‘ so 
A So eS ra 
SAN ~~! hee 
Oo “s et *s o 
S 71\S 
tie Poe / Nv 
a tan ee \ is { 
NX ~ ~ / Vio’ 
Pigs a Ri y, ‘Me 
ea te ~ \ a 
MF PEN mS 
4 sp WE gl As ts 
N Why A Gs Seng, ‘ 
ate te MeN 
= att es 
Fic, 99.—CHARACTERISTICS OF 550 H. P., 375 Revs., 50-Crcre 
SYNCHRONOUS 3-PHASE Moror. 
ae 0.313 56 
+ WFXZAKIZX208 4x 2.1 1.33 (19.39.08) 5 108 
0.75x 12.3 12.3 X2.08 keg 
7 
8.4 
and the short circuit factor k,=1+ =I = 1.15, 
r,! 
see Equation (29). a 
