Aleo X81 Manual de instalación - Página 9
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8.5 Avoiding seals
Avoid the use of a seal between aleo modules and their mount-
ing surface.
Dry and cool operation can have a positive effect on the per-
formance as well as the service life of an aleo module.
Also for roof-integrated mounting, ensure good rear ventilation
to minimise loss of output which results from a higher module
temperature. Ensure adequate ridge ventilation, for example,
with a roof ridge ventilator.
8.6 Clearance under the modules
Keep the space behind the laminate free of any objects. This
prevents damage to the insulating back sheet and the junction
box.
Ensure that sharp or conductive parts (e.g. screws or nails) do
not protrude into the space behind the module.
If possible, take measures to prevent foreign objects (e.g. snow,
ice, leaves, twigs, branches from being able to get behind the
module.
8.7 Shadowing
8.7.1
Avoidance of shadowing
Avoid shadowing of solar modules. This applies also and espe-
cially for shadowing of small areas due to close small objects
like antennas or lightning protectors.
If there is systematic shadowing in the course of the day or year
because of adjacent objects at the site and you do not have any
opportunity to affect the shadowing, then:
take another site into consideration or
-
only plan with the non-shadowed parts of your site when
-
you configure your photovoltaic generator.
aleo solar GmbH | Marius-Eriksen-Straße 1 | 17291 Prenzlau | Germany |
8.7.2
Even shadowing of a single module or solar cell can appreciably
affect the power output of your photovoltaic plant.
If shadow falls on single solar modules of a photovoltaic generator
or on single solar cells of a solar module, the shadowed parts gen-
erate less or no electrical power anymore. This may affect the yield
of the whole module string and therefore the whole generator.
Furthermore, shadowing often causes the solar cells to consume
the otherwise in the module generated electrical power. This may
cause warming of the shadowed cells in comparison to the not
shaded cells, which in extreme cases can raise the risk of fire.
Constant or systematic shadowing can cause a serious yield loss
and may accelerate the aging process and therefore causes power
loss or failures of the photovoltaic generator. Avoid shadowing e.g.
caused by building parts, depending on day time or season (esp. in
winter) to optimize the yield and durability of your plant.
8.7.3
Aleo modules are equipped with bypass-elements to limit the
temperature rising because of the internal power consumption
induced by shadowing to a non-critical grade and thus protect the
module.
Avoid systematic shadowing also because the bypass-elements are
not suited for constant, long lasting loads.
Effects of shadowing
Protective devices of the modules
Installation manual Ver. 4.8, 05/2021, en
Page 9 of 20