• Maximum repetitive peak value tolerable by the junction [VRRM] above the maximum system voltage at the
lowest module operating temperature.
4.3. Grounding and lightning protection
CAUTION
The evaluation and design of the earthing and lightning protection system of PV installations
must be carried out by trained and qualified personnel. It is imperative to refer to the local reg-
ulations in force to comply with specific requirements
DualSun modules must be grounded with prongs, lugs or other suitable means.
Grounding can be done through the holes made for this purpose as part of each module.
These holes allow the earth cable to be attached and connected to the equipotential bonding.
The frame of the panels is delivered with two earthing holes at each corner of the frame.
NOTE
Make sure that the grounding is carried out with the appropriate connections (stainless steel),
to avoid anodizing or oxidation of the module frame at the hole provided for grounding. The
grounding device must be in good contact with the aluminum frame of the module.
Avoid direct contact between aluminum and copper by using an intermediate metal such as stainless steel or
tin.
4.4. Indirect lightning strike
The installation must also be protected from indirect lightning strikes. Indeed, the drivers of the system can be-
come inductive if a lightning strike erupts in the vicinity of the installation. To prevent this phenomenon, the
Installation, use, maintenance manual DualSun FLASH
14
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