CHAPTER 6: SOFTWARE POWER ANALYSIS
PQM POWER QUALITY METER – INSTRUCTION MANUAL 6–17
6.6 Power Analysis
6.6.1 Waveform
Capture
Two cycles (64 samples/cycle) of voltage and current waveforms can be captured and
displayed on a PC using EnerVista PQM Setup or third party software. Distorted peaks or
notches from SCR switching provides clues for taking corrective action. Waveform capture
is also a useful tool when investigating possible wiring problems due to its ability to display
the phase relationship of the various inputs. The waveform capture feature is implemented
into EnerVista PQM Setup as shown below.
Z Select the
Actual > Power Analysis > Waveform Capture
menu item.
EnerVista PQM Setup will open the Waveform Capture dialog box.
Z Check the boxes on the left to display the desired waveforms.
• The waveform values for the current cursor line position are
displayed to the right of any checked boxes.
•The
Trigger Selected Waveforms button captures new
waveforms from the PQM.
•The
Read Selected Waveforms From Device button loads
and views previously selected waveforms.
•The
Open button loads and views previously saved waveforms
•The
Save button saves the captured waveforms to a file
•The
Print button prints the currently displayed waveforms
•The
Setup button allows for the setup of capture attributes
Courtesy of NationalSwitchgear.com
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