Configuration of the input channels:
All versions of the inverter are tted with an input channel (i.e. a single
maximum power point tracking MPPT).
Strings of photovoltaic modules having the same type and number of
panels in series must be connected to the input channel; they must
also have the same installation conditions (in terms of orientation to the
SOUTH and inclination from the horizontal plane).
All input parameters that must be met for correct inverter operation are shown in the "technical
data" table.
Input connection to PV generator (DC side)
After having carried out preliminary checks and therefore having veried
that there are no problems in the photovoltaic system, the inputs can be
connected to the inverter.
The connections can also be made with the wiring box 02
02
detached
from the power module
03
that can be connected later for commissioning.
When working with the wiring box
02
detached, pay particular attention to:
- presence of temporary ground connection
- coupling connector must always be protected in outdoor installations.
The DC side connections are different according to the wiring box used:
- the Standard / -S models use cable glands
- the -SX / -SY models use quick t connectors (one for each pole of each
string).
On the Standard / -S versions, the connection in parallel of the strings ( array composition)
must take place upstream of the input in the inverter and must be made by technicians during
installation.
The -SX / -SY
versions accept a direct single strings connection with
connectors which are located on the outside of the wiring box
02
.
To prevent electrocution hazards, all the connect operations must be carried out with the DC
disconnect switch
14
and the AC disconnect switch
36
open.
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