Logger Parameters With Function A - Fluke 1743 User Manual

Logger Parameters with Function A

The following are the parameters of the 1744/1743 Logger with function A.
TRMS value of voltage
and current. Basic values
on 200 ms per phase.
RMS value of voltage and
current per logging
interval per phase
Active power calculated
from FFT from samples
of voltage and current.
Basic value on 200 ms per
phase.
Fundamental
Logger Parameters with Function A
1 N
∑
V . V
bas
N
i 1
N
1
∑
I
bas
N
i 1
N: Number of samples in 200 ms intervals (2048)
1 M
∑
V .
RMS
M
j
1 M
∑
I
RMS
M
j
M: Number of 200 ms intervals per logging interval
P V . I . cos
n n n
V : RMS value of voltage harmonics of order n
n
I : RMS value of current harmonics of order n
n
n: Order of the harmonics
φ : Phase angle between current and voltage
n
harmonics of order n
P : Harmonics of the active power of order n
n
50
∑
P P
bas n
n 1
Ph P
1
bas 1
Power Quality Logger
2
i
2
I
i
2
V
basj
1
2
I
bas
j
1
n
41