Electro-Voice 1252 - Manual (Page 32)

e Electro Industries/GaugeTech
Doc # E107706 V1.25 2-8
Q Reactive Power (VAR) Total:
For Wye:
For Delta:
+
Q Apparent Power (VA) Total:
For Wye:
For Delta:
Q Power Factor (PF):
For Wye: x = A, B, C, T
For Delta: x = T
C B A T
VA VA VA VA
+ + =
2 2
T T T
VAR W VA
+ =
x
x
x
VA
Watt
PF
=
C B A T
VAR VAR VAR VAR
+ + =
2
1
) ( ) (
2
) (
⎥
⎥
⎥
⎥
⎦
⎤
⎢
⎢
⎢
⎢
⎣
⎡
•
− •
∑
=
n
i v
I V VAR
n
t
t A t AB
RMS RMS T
A AB
2
1
) ( ) (
2 ) (
⎥
⎥
⎥
⎥
⎦
⎤
⎢
⎢
⎢
⎢
⎣
⎡
•
− •
∑
=
n
i v
I V
n
t
t C t BC
RMS RMS
C BC