Fluke 1744 - Manual (Page 47)

1744/1743
Users Manual
38
Logger Parameters with Function P
The following are the parameters of the 1744/1743 Logger with function P.
RMS value of voltage and current.
Basic values on 200 ms per phase.
∑
=
⋅ =
N
i
i bas
V
N
V
1
2
1
∑
=
⋅ =
N
i
i bas
I
N
I
1
2
1
N: Number of samples in 200 ms intervals
(2048)
RMS value of voltage and current
per logging interval per phase
∑
=
⋅ =
M
j
j bas RMS
V
M
V
1
1
∑
=
⋅ =
M
j
j bas RMS
I
M
I
1
1
M: Number of 200 ms intervals per
logging interval
Active power based on samples.
Basic value on 200 ms per phase.
i
N
i
i bas
I V
N
P ⋅ =
∑
= 1
1
Active power per logging interval
per phase
∑
=
⋅ =
M
j
j bas
P
M
P
1
1
P
bas
: 200 ms value
M: Number of 200 ms intervals per
logging interval
Total active power on all three
phases
∑
=
=
3
1 k
k total
P P