11
FuturaSun srl – The specifications in this manual are subject to revisions without further notice
This document applies to the module series FU XXX M ZEBRA
•
In a case that the V
oc
to the connectors is
decidedly lower than the standard values
(75% or less) this could represent a
condition of anomaly which should be
investigated more thoroughly.
To measure the short-circuit current (I
sc
):
•
A PV module exposed to the south,
inclined perpendicularly to the rays of the
sun, in the middle of the day (about 12:00
to 1:00 PM ) and in conditions of good
weather, presents a value of I
sc
similar to
the rated values at STC, as measurable
with an amp-meter in continuous current.
•
By measuring the solar radiation (E)
effective at the moment with a
solarmeter/pyranometer in W/m
2
the short
circuit current of the module at the moment
I
scmod
should be very close to the following
value:
I
scmod
= I
scSTC
x E/1000
Where:
o
I
scSTC
is the short circuit current
measured at STC;
o
1000 W/m² is the radiation at STC.
•
The measurement of the Isc is executable
with precision only when using a
solarmeter/pyranometer which gives exact
information on the conditions of solar
radiation at the moment, otherwise it is not
reliable.
•
In the case of the unavailability of a
solarmeter/pyranometer, it will only be
possible to have an estimate of the
functionality of the module by comparing
the value of I
scmod
measured in relation to
those of the other modules of the PV
system, measured under the same
conditions of irradiation.
The acknowledgment of any obvious
discrepancies of I
sc
in the modules thus
serves to identify anomalies.
•
The maximum module configuration
when connected in series is 21 modules
size 120 half-cut cells, for 1000 V DC
systems
•
The maximum module configuration
when connected in series is 31 modules
size 120 half-cut cells for 1500 V DC
systems
•
For parallel connections, the maximum
configuration is 2 strings
8c) Maintenance
Although PV modules do not require any
routine maintenance, periodic (annual)
inspection for damage to glass and inspection
of the electrical connections and for corrosion
as well as the mechanical connection is
recommended.
Under normal conditions (sufficient rainfall),
cleaning of the module is not required. In
extreme climatic conditions, the electrical
performance of the module may be affected by
accumulation of dirt on the glass front cover.
In this case, the front cover can be washed
using water (no aggressive cleaning solutions,
chemicals or abrasives) and a soft cloth.
Exercise extreme caution when applying water
on any electrical device!!
ATTENTION!!!!!
To avoid the phenomena of electric arcing,
both the connection and disconnection of the
connectors of the modules being tested and
the measurements of Voc should be
performed with the string of modules in
conditions of open circuit.
In addition, the Isc should be measured for
each individual module in conditions of short
circuit
9. Packaging, Handling and Storage of
Modules
9a) FUTURASUN's Packaging
FUTURASUN provides the FU modules in the
most appropriate packaging, designed to
guarantee that the transportation and storage
will be in conditions of maximum safety and
protection until the time of installation.
Transport the module in its original
packaging until installation.
Protect all parts
of the module during transport and installation
from mechanical stresses.
