7
FuturaSun srl – The specifications in this manual are subject to revisions without further notice
in order to be protected against cutting by sharp
edges and against skin burns. Handle the module
in a way that avoids breakage or scratching of the
front cover glass and mechanical damage to any
other part of the module. Do not carry the module
by its connector wires in order to avoid the risk of
electric shock and prevent damage to the module.
During the wiring and installation of the modules
use caution! Do not trample on or scratch the
modules. Do not drop sharp or heavy objects on
either surfaces of the module. Do not subject the
modules to any impact, in particular in the vicinity
of the edges of the frames and do not flex them
mechanically. The modules are made of a single
laminate, therefore once damaged, they are not
repairable.
In the event of any damage to either the front or
the back of the module, the part exposed might be
electrically active and therefore dangerous,
especially if the module is connected in series to a
string.
7c) Electrical Connection
Danger!
Risk of serious injury or death from electric shock or
electric arc flash! Do not connect or disconnect modules
under load!
Even if the modules are protected against
accidental contact, under unfavorable conditions
high hazardous voltage (several hundreds of volts)
may occur during installation. Consequently,
installation and maintenance of the modules, as
well as the connection to the main power supply,
may only be performed by authorized and qualified
persons.
Before connection of the system to the
grid, the PV system must be approved for correct
installation, by an electrician responsible to the
operator and the local electricity company.
The design of the PV system should be done by a
qualified person familiar with PV system design.
The system design is the responsibility of the PV
system designer. Therefore, FUTURASUN does
not assume any liability for how the modules are
installed.
Under normal conditions, a PV module is likely
to experience conditions that produce more
current and/or voltage than reported at STC.
Accordingly, the values of I
sc
and V
oc
marked
on the module should be multiplied by a factor
of 1.25 when determining component voltage
ratings, conductor current ratings, fuse sizes,
and size of controls connected to the PV
output.
The FU modules are qualified in protection class II
as for the class of protection against electrical
shock in accordance with IEC 61730-1:2016.
Also note:
•
Grounding:
The module frame or array must
be grounded before wiring. For grounding, use
material that is certified according to CEI 82/25
or applicable national codes – in particular the
grounding should be performed by a qualified
electrician.
Ensure that the grounding area for
the wire is clean and free from oxides or any
debris that could impede the electrical
grounding.
Attach a separate approved ground
wire to one of the holes marked with ground
label on the module frame with an IEC
approved ring terminal or IEC listed grounding
lug.
•
V
oc
should be increased by a factor according
to the lowest ambient air temperatures
expected for the installation site. Refer to CEI
82/25 for the correct V
oc
correction factor
according to the respective temperatures. If
this information is not available, a 1.25
multiplying factor can be used as default value
for correction of V
oc
.
•
In order to obtain the required electrical current
and/or voltage, the modules can be connected
in series, in parallel, or in a combination of
both.
o
In the case of series connection, the Voc is
the relevant value when calculating the
total voltage of the series connection. Do
not exceed the maximum system voltage of
1000 V for the modules FU XXX P and FU
XXX M even at low temperatures. Always
use the same type and rating of module in
one installation!
o
In the case of parallel connection of
modules or series strings of modules,
fusing may be required.
•
The voltage of the strings of modules, in series,
when measured at their poles, is the sum of all
the individual voltages of each module. This
total voltage should be compatible with the
range of input voltages admissible for the
inverter to which the modules are connected.
