Technical Specifications; Input Values - Power One AURORA PVI-10.0-I-OUTD-400 Installations- Und Bedienungshandbuch

Use and installation manual
(PVI-10.0/12.0-I-OUTD(-S)-400 Rev:1.3)
8

TECHNICAL SPECIFICATIONS

8.1

Input values

WARNING: the photovoltaic field and system wiring must be
configured in such a way that the PV input voltage is less than the
maximum upper limit, independent of the model, number and operating
conditions of the chosen photovoltaic panels.
As the panel voltage also depends on the operating temperature, the
choice of the number of panels per string must take into account the
minimum ambient temperature for that specific area (see table A).
WARNING: the inverter is provided with a linear output derating
depending on the input voltage, from 470 Vdc (100% output power) to
520 Vdc (0% output power)
WARNING: the open circuit voltage of the photovoltaic panels is
affected by ambient temperature (the open circuit voltage rises as
temperature drops), and it is necessary to ensure that the minimum
expected temperature for installation does not cause the panels to exceed
their maximum upper voltage limit of 520 Vdc. The table below is an
example which indicates the maximum voltage for each panel for typical
panels of 36, 48, 60, and 72 cells, depending on temperature (assuming a
rated open circuit voltage of 0.6 Vdc for a cell at 25°C, and a temperature
coefficient of -0.0023 V/°C. The table thus shows the maximum number
of panels that may be connected in series, depending on the minimum
operating temperature. Consult the panel manufacturer for the correct
temperature coefficient of V
the photovoltaic array.
before calculating the maximum voltage of
oc
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