Power One AURORA PVI-3.8-I-OUTD Manuel D'utilisation Et D'installation page 16

Installation and operating manual
(PVI-3.8/4.6-I-OUTD Rev.: 1.5)
WARNING: To prevent damage to equipment, the string voltage must
never exceed 520 Vdc. Due to the negative thermal coefficient of the open
circuit voltage of the photovoltaic module, maximum voltage is obtained in
conditions of minimum ambient temperature. It is advised to check the
configuration of the photovoltaic generator by means of the AURORA
Designer dimensioning software.
NOTE: A minimum Vstart input voltage of 200 Vdc (voltage can be set
from the control panel within the range of 120 Vdc to 350 Vdc) is required
in order to start the AURORA inverter grid connection sequence. Once
connected, the inverter will transfer the available power to the grid, for any
Vdc input voltage value within the range between 70% of the value set for
Vstart, and 520V. The power transferred for each array is also limited by
the maximum manageable current (see paragraph below) (Figure 28 and
Figure 29 show the limits for which maximum power is transferred).
The current of each array must also fall within the limits of the inverter. For the
AURORA inverters, the maximum current coming from each input can be 14Adc for
PVI-4.6-I-OUTD models, or 12.5 A for PVI-3.8-I-OUTD models.
In the event that the photovoltaic system exceeds the capacity of a single inverter,
other AURORA inverters can be added to the system. Each of these inverters will be
connected to an adequate section of the photovoltaic field on the DC side, and will be
connected to the distribution grid on the AC side.
Every AURORA inverter will work independently from the others, and, from its
section of photovoltaic panel, will supply the grid with the maximum available power.
Decisions regarding the structuring of a photovoltaic system depend on a certain
number of factors and considerations, including the type of panels, the availability of
space, the future location of the plant, long-term energy production targets, etc.
On the Power-One website (www.power-one.com) a configuration program is
available to help you dimensioning your photovoltaic system (AURORA Designer).
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