
22-16 Electrical Variables
e other two insertions are indicated by the following convention: S
ijk
indicates a reading performed
wi
th
th
e
cu
rrent
le
ads
co
nnected
to th
e
li
ne
“i” an
d
th
e
vo
ltmeter
le
ads
co
nnected
be
tween
th
e
ph
ases
“j” an
d
“k.” If “i” is eq
ual
to “j,” on
e
is om
itted
(e.g., th
e
no
tation
P
12
(Figure 22.17b). e active power
ab
sorbed
b
y
a si
ngle
p
hase
i
s
u
sually
r
eferred
to a
s
P
1
.
e wa
ttmeter
re
ading
co
rresponding
to th
e
(c
)
ca
se
in Fi
gure
22.17 is eq
ual
to th
e
re
active
po
wer
Q
1
in
volved
in ph
ase
1, sa
ve
fo
r
th
e
fa
ctor
. Hence, in the case of symmetrical and balanced systems, the
ov
erall
r
eactive
p
ower
i
s
g
iven
b
y
Q Q
P
P= = =3
1