Hioki CM3286-50, Instruction Manual

Page: 103 / 118

97
Equations
Unbalanced 3‑phase/4‑wire
reactive power
Q
(UB3P4W)
[var]
Q1 + Q2 + Q3
• The symbol
Q1
represents the reactive
power of the phase voltage U
1
and the wire
current
I
1
.
• The symbol Q2 represents the reactive
power of the phase voltage
U
2
and the wire
current I
2
.
• The symbol
Q3
represents the reactive
power of the phase voltage U
3
and the wire
current
I
3
.
• Due to the effects of measurement error ,
Q
=0 is used when
S
<|
P
|.
Unbalanced 3‑phase/4‑wire
power factor
PF
(UB3P4W)
) 4 3 (
) 4 3 (
W P UB
W P UB
S
P
–
HIOKI CM3286C961-00