Sharp ND-R250A5 - Manual (Page 18)

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7. INSTALLATION
Refer to installation manual of PV module.
8. ELECTRICAL RATINGS
Refer to installation manual of PV module.
9. GROUNDING
The frame grounding must consider the local requirement and regulation at the site of installation. When grounding is required, please refer to below example con-
nection (Figure 3). Please be careful in arranging the system ground so that the removal of one module from the circuit will not interrupt the grounding of any other
modules.
The modules should be grounded to the same electrical point as described below. Each PV module has a hole on the side frame for either a bolt, nut and washer
grounding the module to the frame, a ground lug fastened by bolt or screw, or appropriate screw (hardware not provided). Near the hole for ground, either
“ ” or “G“ is indicated as ground symbol. An example of acceptable ground connection using a bolt, nut and washer retaining a ground lug is shown in figure 3.
In a connection of this type, the hardware (such as a toothed locked washer / star washer) must score the frame surface to make positive electrical contact with the
frame. The ground wire must be considered within the local requirement of local and regulation at the site of installation.
10. MOUNTING
Please make sure that all the information described in the installation manual is still valid and proper for your installation. The mounting method has been verified by
Sharp and NOT CERTIFIED by a third party organization.
The approved way to mount Sharp PV modules to a support structure is using the bolt holes provided as described in the Specifications. Although Sharp does not
specify or warrant frame clips or clamps, using frame clips (not provided) or clamps (not provided) is also possible when they are designed for PV modules and with
minimum dimensions on the sides of the module in accordance with the instructions and drawings provided. If using frame clips or clamps, the modules should
be fixed rigidly and there shall be no damage to the modules by deforming mounting structure against design load. The Sharp module guaranty may be void if
customer-selected frame clips which are improper or inadequate with respect to the module properties (including strength or material) or installation. Note that if
metal clips are used, there must be a path to ground from the clips, (for instance, using star washers in the clip hardware set).
Please review the descriptions and drawings carefully; not mounting the modules according to one of these methods may void your guaranty. These mounting
methods are designed to allow module loading of 2,400 Pa. Support structures that PV modules are mounted on should be rigid. Sharp PV modules are designed to
secure their electric performance under the condition that they are mounted on rigid support structures. Deformation of support structure may damage PV module
with its electric performance. When mounting the module on structure, ensure that no corner has a displacement of more than 2 mm per every 1,000 mm of the
diagonal.
11. MAINTENANCE
The modules are designed for long life and require very little maintenance. If the angle of the PV module is 5 degrees or more, normal rainfall is sufficient to keep
the module glass surface clean under most weather conditions. If dirt build-up becomes excessive, clean the glass surface only with a soft cloth using water. If clean-
ing the back of the module is required, take utmost care not to damage the back side materials. In order to ensure the operation of the system, please check the
connection of wiring and the state of the jacket of wires every now and then. For PV modules with anti-reflective coating glass (ND-R250A5 to ND-R220A5 and
NU-R250J5 to NU-R240J5), do not touch the glass since finger prints or stains will easily mark the glass. If dirt build-up becomes excessive, clean the glass surface
with water only.
FIGURE 3: EXAMPLE OF ACCEPTABLE GROUND CONNECTION
Hexagon nut
Toothed lock washer
Wire binding lug
Hexagon Head bolt
Screw terminal
Wire insert
Wire
Side frame
GENERAL INSTALLATION MANUAL
Ver 9.2 E