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6 Functions on the Web Server Pages
6 FUNCTIONS ON THE WEB SERVER PAGES
OVERVIEW
The Power Xpert Meter provides a detailed web interface, providing information for six main func-
tional categories:
• Meter
• Power
• Quality
• I/O
• Events
• Setup
A great deal of information is nested in drop down menus and related pages within these catego-
ries. By drilling-down through the many pages within each category, increasing levels of detail
about the measurements can be obtained.
This chapter of the manual is not an exhaustive resource that displays every page in the system.
The intent is to give the user a general understanding of where the most useful and pertinent infor-
mation is stored for review.
All of the stored, measured values can be accessed by using any communication port available,
including the display (unless otherwise noted).
NOTE: Setup information is not provided in this chapter. See Setup on the Web Pages, for setup
details.
A GENERAL NOTE ABOUT GRAPHS AND PLOTS
When you display a trend plot or other graph on the various meter pages, this is a “snapshot” show-
ing the last values when the graph was displayed plus the historical data. To update with more cur-
rent values, reselect the value that’s displayed in the list of radio buttons along the left of the page.
METER
The Meter page(s) provide Voltage, Current, and Frequency readings. You can view information
by measurement type or by phase. By Accessing further details you can look at trends, min/max
values, and set triggers. By right-clicking on any page, a drop-down list appears that you can use
to reset data, as shown to the left.
VOLTAGE
The Power Xpert Meter measures line-to-line and line-to-neutral voltages and calculates rms values
over the period of 200 milliseconds. The system average values are calculated for main voltage
channels as well as AUX.
NOTE: Systems with an AUX (PXM42xx) option will provide only line-to-line voltages.
Symmetric components are available for main voltage channels; symmetric components are not
available for PXM40xx and PXM42xx versions of the meter.
The Power Xpert Meter maintains a log of all voltage rms measurements over the period of 1 year
with date and time stamps. This information is also available as a trend for display and communica-
tions. The min, max and averages are recorded for each interval; 2 days at 5 minute intervals, 28
days at 1 hour intervals and 44 months at 1 week intervals.
The most recent minimum and maximum values are detected for all the voltage channels and sym-
metric, and are logged with date and time stamps. Current minimum and maximum values can be
cleared by the user at any time. After the current values are cleared, the meter will begin calculating
new minimum and maximum values.
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