Power Quality Analyzer Model 8335
73
5.3.2 THD Measurement of Total Harmonic Distortion
The
THD
sub-menu displays the waveforms over a period of the measured signals
and the total harmonic distortion rates for voltage and current.
5.3.2.1 THD Display Screen (3U)
This screen displays the phase-to-phase voltage waveforms for one period and
the total harmonic distortion values.
3
2
1
Figure 5-24
Item
Function
1
Instantaneous value cursor; change values with the cursor using the
◄
and
►
buttons
2
Harmonic distortion rate for each curve
3
Instantaneous value of the signals at the intersection of the cursor and the curves
t:
time relative to the start of the period (expressed in milliseconds)
U1:
instantaneous phase-to-phase voltage between phases 1 and 2 (U
12
)
U2:
instantaneous phase-to-phase voltage between phases 2 and 3 (U
23
)
U3:
instantaneous phase-to-phase voltage between phases 3 and 1 (U
31
)
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1.877.766.5412
www.
PowerMeterStore
.ca
