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Specifications are subject to change without notice
WM23-96DS 080806
5
WM23-96
Waveform of the signals that can be measured
Figure G
Sinewave, undistorted
Fundamental content
100%
Harmonic content
0%
Arms =
1.1107 | A |
Figure H
Sinewave, indented
Fundamental content
10...100%
Harmonic content
0...90%
Frequency spectrum: 3rd to 16th harmonic
Figure I
Sinewave, distorted
Fundamental content
70...90%
Harmonic content
10...30%
Frequency spectrum: 3rd to 16th harmonic
Mode of operation
Analysis principle
FFT
Harmonic measurement
Current
Up to 16th harmonic
Voltage
Up to 16th harmonic
Type of harmonics
THD (VL1)
THD (VL2)
THD (VL3)
THD (AL1)
THD (AL2)
THD (AL3)
Display pages
THD %
Others
The harmonic distortion
can be measured in both
3-wire or 4-wire systems.
Harmonic Analysis
Variables that can be displayed in case of a three-phase system, 4-wire connection.
No
1st variable
2nd variable
3rd variable
4th variable
Notes
1
V L1
V L2
V L3
V LN
Σ
Σ
Σ = system
2
V L1-2
V L2-3
V L3-1
V
Σ
Σ
Σ = system
3
A L1
A L2
A L3
An
An= neutral current
4
PF L1
PF L2
PF L3
PF
Σ
Σ
Σ = system
5
PF L1 (min)
PF L2 (min)
PF L3 (min)
6
W L1
W L2
W L3
7
W L1 (max)
W L2 (max)
W L3 (max)
With “A” option: AL1-AL2-AL3 max
8
var L1
var L2
var L3
9
VA L1
VA L2
VA L3
10
AL 1
variable connected to alarm 1
11
AL 2
variable connected to alarm 2
12
W
Σ
PF
Σ
var
Σ
Hz
Σ
Σ = system
13
W
Σ
PF
Σ
VA
Σ
Hz
Σ
Σ = system
14
W
Σ (max)
PF
Σ (min)
Σ
Σ = system
15
W dmd
VA dmd
r.t.
r.t.= symbol of communication
Rx/Tx on the serial port
16
W dmd (max)
VA dmd (max)
17
THD V L1
THD V L2
THD V L3
total harmonic distortion
18
THD A L1
THD A L2
THD A L3
total harmonic distortion
Display pages