17-9
IM CW240E
CW 240 Specifications
17
Measurement Item
Equations
Electric Power
Total Power Factor
Not using the reactive power method
Using the reactive power method
Pn
=
Unr
Inr
Uni
Ini
Electric Power nth Order
Content
Total RMS Value
Total Electric Power Valu
100%
fundamental wave active power
nth order active power
∑
U
=
∑
Un
2
50
n
=1
∑
P
=
∑
Pn
50
n
=1
∑
I
=
∑
In
2
50
n
=1
∑
Pn
50
n
=1
(
∑
Pn
)
2
(
∑
Qn
)
2
50
n
=1
50
n
=1
∑
P
∑
U
∑
I
Harmonic Equations for Each Wiring
Measurement Item
Wiring
Single Phase 2 Wire
Single Phase 3 Wire
Voltage RMS Value
U
1
n
U
1
n
U
2
n
Current RMS Value
I
1
n
I
1
n
I
2
n
I
3
n
(When using 3 current)
Electric Power
Pn
Unr
Inr
Uni
Ini
Pn
P
1
n
P
2
n
Reactive Power
*1
Qn
Unr
Ini
Uni
Inr
Qn
Q
1
n
Q
2
n
Apparent Power
*1
Sn
Un
In
Sn
S
1
n
S
2
n
17.1 CW 240 Specifications