Measured Values Per Phase X (Channel X - Values Are Indexed X) - Fluke NORMA 4000 Operator's Manual

Measured values per phase x (channel x – values are
indexed x)
For the majority of values, such as rms, power, calculated values as impedance, power
factor, the corresponding ones of the fundamental "H01" are also available. Due to the
frequent distortion by harmonics, it is often better to use H01 values for the phase shift
between voltage and current (angle) or for the reactive power caused by inductive or
capacitive load. However, a stable synchronization source must be present and selected.
RMS
[1]
Mean
Rectified mean
Positive peak
Negative peak
Peak-to-Peak
[2]
Crest factor
Form factor
Rectified mean corrected
[3]
Harmonic distortion
[4]
Harmonic content
Fundamental content
In W3 system, voltages listed above are both available for the phase voltage
U (measured) and for the phase-to-phase voltage U
x
system, the phase-to-phase voltage U
the channel and measured. Phase voltage values are unavailable.
Phase shift of fundamental
to reference (sync)
Measured values per phase x (channel x – values are indexed x)
T
1
∫
2
U u dt
RMS
T
0
T
1
∫
U u dt
M
T
0
T
1
∫
U | | u dt
RM
T
0
U MAX ( ) u
P
U MIN ( ) u
P
U U U
PP P P
U
P
U
CF
U
RMS
U
RM
U
FF
U
RMS
U U , 1 1107
RMC RM
2 2
U U
RMS H 01
U
THD
U
H 01
2 2
U U
RMS H 01
U
HC
U
RMS
U
H 01
U
FC
U
RMS
Note
is directly connected to the input of
xy
U H01
Measured Values Computation
T
1
∫
2
I i dt
RMS
T
0
T
1
∫
I i dt
M
T
0
T
1
∫
I | | i dt
RM
T
0
I MAX ) i (
P
I MIN ) i (
P
I I I
PP P P
I
P
I
CF
I
RMS
I
RM
I
FF
I
RMS
U
( ) - not for current
RM
2 2
2 2
I I
RMS H 01
I
THD
I
H 01
2 2
I I
RMS H 01
I
HC
I
RMS
I
H 01
I
FC
I
RMS
(calculated). In W2
xy
I H01
10
10-3