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Power Curves
Graphical Mode
History > Power Log Curves
The power curve graphical mode contains two vertical axis. The first three curves, as seen on the legend, are the
individual phase voltage between lines 1-2, 2-3 and 3-1. In case of fire pump models built with an automatic transfer
switch, the phase voltages between lines represent voltage read from the alternate side of the controller when the
alternate side is active. They are linked to the first axis on the left of the graph in Volt. The three last curves, as
seen on the legend, are the current value of each line. They are linked to the second axis on the right of the graph
in Ampere. The vertical axis scales are dynamic and will resize depending on the highest recorded value. The
horizontal axis represents time and period. The left part of the horizontal axis shows the beginning of the current
scope and the right part shows the end of the scope. Located just right of the axis, the total scope time is shown.
The contextual navigation pad is implemented in this page. It allows for quick navigation functions, like “Zoom in”,
“Zoom out”, “Rewind”, “Forward” and “Textual Mode”. As always, clicking on the Navigation Pad Icon in the lower
right corner of the screen will activate the Navigation Pad with functions specific for the page. By pressing the right
or left buttons on the navigation pad, the time will shift back or forth by a quarter of the current zoom setting,
allowing a quick user-friendly navigation.
The grey vertical bar with a blue arrow, located far at the right of the screen is the legend. Clicking on it will display
an accurate description of the different curves (L1-L2, L2-L3, L3-L1, I1, I2, I3) with their respective colors.
Betw
een the “0” voltage value and the horizontal axis, horizontal zones are displayed. They are described in the
“Indicators” section of the legend. These zones indicate when the motor was running and when the voltage reading
is taken from the alternate side by colorizing small sections of the horizontal zone whenever the condition is
occurring.
As indicated earlier, the “Textual Mode” is available by pressing the “Select” button on the navigation pad. This will
represent the power logs in a table form, allowi
ng for a more precise reading (see “Textual Mode” right below).
Содержание GLU
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