312
and :

ELECTRICAL APPARATUS

it is :

P0 = (i0aro + ii2n + i00V + P) - j (ioaa?o + ii23i + ioo2s)- (37)
Where:

io2^o = primary resistance loss,

^Vi = secondary resistance loss,

io(?r = core loss (and eddy-current loss),

P = output,

{Q2Xo — primary reactive volt-amperes,

i^Xi = secondary reactive volt-amperes,

iQQ*x = magnetizing volt-amperes.

176. Introducing into the equations, (16), (17), (18), (19), (23)
the terms:

= X0

(38)

Where X0 and Xi are small quantities, and X = X0 + Xi is the
"characteristic constant" of the induction motor theory, it is:
Primary current:

EQ S + Xi _ jB0 8 + Xi

•/o — " ry" ~\—i \ r~"'\"\~ — r/ \ _~i~\'

Li S\Q -p A-i "T" AoA.1 Z/ SAo "T" A .

Secondary current:

So

-1 Z sX0
Exciting current:

7 00 = "ry"

X0Xi ~~ Z

sX0 + Xi + X0Xi Z s\Q -f Xi

E.m.f. of rotation:

Counter e.m.f.:

X+

___
sX0

' sX0 + Xi

(40)
(41)
(42)
(43)