Steca coolcept StecaGrid 1800, Инструкция по установке и эксплуатации

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Graphical yield (day, month, year)
Daily, monthly and annual yields can be displayed graphically in a chart.
①
Period for a single yield value (here: day yield)
②
y-axis:
n Yield in kWh
n
With an extra
M: yield in MWh
n
The scaling changes depending on the maximum value.
③
x-axis: time in hours/days/months/years
④
Total of all individual yields shown in the diagram, in kWh
The graphical representation can show annual yields for the last 20
years.
Event messages
See Ä
7, p. 128.
Generator characteristic curve
①
x-axis: input voltage in V
②
y-axis: power in kW
③
Peak = MPP
When the ‘Gen. Ch. Curve’ menu item is called, the inverter records
the generator characteristic curve of the inverter and then displays
it (Fig. upper left). The following applies:
n
The inverter traverses the input voltage range and records the
power generated over this range. Duration: a few seconds,
is displayed.
n
The MPP is the peak of the generator characteristic curve.
n
This peak and the generator characteristic curve change with
the level of solar irradiation.
n
Multiple peaks are a sign of partial shadowing (Fig. left).
n
If the top of the curve is flat then the inverter can possibly no
longer feed power into the grid.
GB
747.431 | Z08 | 2014-01-31 90