Frame Type PV Module
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2.Installation
2.1 General Information
The PV module generates power when it is illuminated by sunlight. In order to gain maximum
power, the PV module should face directly towards the sun. The PV module should be
installed to typically face south in the northern hemisphere and north in the southern
hemisphere.
In most applications, the PV module should be installed in a location without shading
throughout the year. It is necessary to choose a site where no trees, buildings, or obstructions
could cast shadows on the PV module.
If it is not possible to place the PV module in a shadow-free location, place it in the least
shaded location and conduct an analysis on shadow coverage throughout the year.
In systems that are configured with multiple rows of angled PV modules, the rows should be
spaced far enough apart to minimize the impact of rows shading other rows during the course
of the day. This distance is dependent on the latitude at which the system is installed.
It is not permitted to modify the module under any circumstances.
Make sure the installation location and its surroundings are free from corrosive matters. (Ex.
sea water, chemical factory, domestic animals hut, hot spring or volcano area emitting
hydrogen sulfide or ammonia gas).
In some installations, the PV module is mounted at a tilt angle which is measured between
the PV module and the horizontal ground. For grid-connected installations where PV modules
are attached to a permanent structure, it is recommended to tilt PV module at the angle equal
to the site’s latitude in most simple way or get optimal tile angle by simulation software. Adjust
the PV module orientation to face the sun directly so it will generate the maximum power.
It is recommended to set the tilt angle above 10 degrees so that rain can flush away the
accumulated dust on PV module surface. If lower, a periodic cleaning maintenance may be
necessary.
2.2 Mounting Method
PV modules can be mounted on ground, roof, and/or pole by using bolts, clamps, fixing
plates.
In most installations a clearance of 0.2 inch (5 mm) at least between modules is necessary
to accommodate thermal expansion.
For proper operation and to avoid damage from condensation, the PV module requires an
adequate flow of air across the rear surface. While installing PV modules, ensure sufficient
distance between the rear of PV module and the mounting surface to allow the air flow.
In case of on-ground installation, be sure to leave sufficient distance between PV module and
the ground to avoid the module being exposed to standing water or snow.
