Chapter 7 Monitoring
M E T E R S
Viewing
R E A L - T I M E H A R M O N I C
S P E C T R U M
PM130 PLUS Powermeter Series
121
the
Symmetrical components
box on the
Channels
tab, and then click
OK
.
Viewing Phase-to-phase Voltages
PAS can transform phase-to-neutral voltage waveforms in configurations
with a neutral into phase-to-phase waveforms allowing you to view the
waveshape, angle relationships and harmonics of the phase-to-phase
voltages.
Click on the
button on the waveform window toolbar. Click the button
once again to return to phase-to-neutral waveforms.
7.4
Viewing Real-time Harmonic Spectrum
To retrieve real-time harmonic spectrum from your meter:
1.
Ensure that the
On-line
button
on the PAS toolbar is checked.
2.
Select the device site from the list box on the toolbar.
3.
Select
RT Harmonic Monitor
from the Monitor menu or click on the
button on the PAS toolbar.
Click on the “Poll” or “Continuous poll”
button to poll the meter once
or continuously. Click on the
Stop
button
to stop continuous polling.
Figure
7-3: RT Harmonic Monitor – Spectrum Chart
PAS retrieves harmonic spectrum for V1-V3 and I1-I3 channels.
Harmonics can be displayed as a spectrum chart for a selected channel or
in a table. PAS can also synthesize waveforms based on the harmonic
spectrum to let you view a shape of the voltage and current waveforms in
your network.
