CHAPTER 12: FLICKER AND ANALYSIS FLICKER POLLING SCREEN
EPM 9450/9650 ADVANCED POWER QUALITY METERING SYSTEM – INSTRUCTION MANUAL 12–7
Flicker Monitoring
•Clicking on Stop causes Flicker to stop being processed and freezes all the current
values. Stop Time is recorded and the current Max/Min values are cleared.
•Clicking on Start starts Flicker processing. Start Time is recorded.
•Clicking on Reset causes the Max/Min values to be cleared and restarts the Flicker
Pst and Plt timers.
Use the tabs at the top of the screen to navigate to the Instantaneous, Short Term, and
Long Term Readings views, shown on the right side of the screen.
Instantaneous Readings
Note
The Instantaneous view is the default of this screen. (See the screen pictured on the
previous page.) If you are in the Short or Long Term views, click on the Instantaneous tab to
display this view.
• The PU values, Pinst for Voltage Inputs Va, Vb and Vc are displayed here and are
continuously updated. The corresponding Current Voltage values for each channel
are displayed for reference.
Short Term Readings
Click on the Short Term tab to access a screen containing three groups of Pst readings
(shown below).
Pst readings displayed:
• Current Pst values for Va, Vb and Vc and the time of computation
• Current Pst Max values for Va, Vb and Vc since the last reset and the time of the
last reset
• Current Pst Min values for Va, Vb and Vc since the last reset and the time of the last
reset
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