Contrel EMA90 - Measuring & Calculation Formulas

EMA90 - USER MANUAL
-10-
2.5) MEASURING & CALCULATION FORMULAS
( )
dt
W
L
i
Wh
L
i
A
L
i
W
L
i
PF
L
i
Q
L
i
W
L
i
W
L
i
L
i
I
L
iN
V
L
iN
A
L
i
P
i
L
i
Δk
v
L
iN
k
Q
L
i
P
i
L
i
k
v
L
iN
k
W
L
i
P
i
L
iN
k
I
L
i
P
v
L
iN
k
V
L
iN
P
k
P
k
P
k
P
k
∫
∞
=
=
+
=
⋅=
∑
−
⋅
=
∑
⋅
=
=
=
=
=
=
=
∑
∑
0
Energy Active
FactorPower
2
2
cosCos
PowerAppearent
Power Reactive
Power Active
2
RMSCurrent Line
2
RMS Voltage Phase
1
1
1
1
ϕϕ