Fluke 1744 - Manual (Page 48)

Power Quality Logger
Logger Parameters with Function P
39
P
k
: Active power of the phase
k: Phase (k = 1, 2, 3)
Absolute value of the active power
per interval per phase. Parameter in
PQ Log: |P|. ∑
=
⋅ =
M
j
j bas betr
P
M
P
1
1
M: Number of 200 ms intervals per
logging interval
Sum of the absolute value of the total
active power on all three phases. PQ
Log parameter: |P|
total
.
( )
k k
betr betrtotal
P P
∑
=
=
3
1
K: Phase (k = 1, 2, 3)
Apparent power per phase
2 2
bas bas bas
Q P S + =
Apparent power per logging interval
per phase ∑
=
⋅ =
M
j
j bas
S
M
S
1
1
Total apparent power on all three
phases
∑
=
=
3
1 k
k total
S S
Power factor per phase
S
P
Q
Q
PF ⋅ = = λ
Total power factor on all three
phases
total
total
total
total
total total Q
Q
S
P
PF ⋅ = = λ
Tangent φ per phase
P
Q
= ϕ
tan