◼ Ensure that components of other systems do not cause damaging mechanical
or electrical performance effects on the modules.
◼ Connect modules in series to increase voltage or in parallel to increase current.
When connected in series, the positive pole of the module is connected to the
next negative pole. When connected in parallel, the positive pole of the module
is connected to the positive pole of the next module.
◼ The number of bypass diodes provided varies depending on the module model.
◼ Connect the appropriate number of modules according to the voltage
specifications of the inverter used in the system. Even at the lowest local
temperature conditions, the connected modules must produce no more than the
voltage allowed by the system. If overcurrent protection devices (fuse) are not
used in series within each string of modules, up to two strings of modules can
be connected in parallel. If a suitable overcurrent protection device is
connected in series with each string of modules, three strings or more modules
can be connected in parallel.
◼ In order to avoid (or reduce) the mismatch effect of the array, it is
recommended to connect modules of similar electrical performance on the
same string.
◼ In order to reduce the risk of indirect lightning strikes, loops should be avoided
when designing the system.
◼ The modules should be securely fixed to withstand all possible loads, including
wind and snow loads.
◼ When installing modules for rooftop applications, it is crucial to consider long-
term maintenance. Roofs designated for PV system installation must undergo
assessment by construction experts or engineers. Formal and thorough
structural analysis results must be obtained in accordance with local
requirements, including verifying the roof's capacity to withstand additional
loads from the system supports and the weight of the modules.
◼ Movement of the substrate should be taking into consideration when plannin
g the panel layout. Example areas of installation which may cause damage in
clude but are not limited to: different sections of rail and ends of roof sheets.
◼ Design consideration : Panels should not be placed where it will be subject
to the roofs thermal expansion, contraction and other movement.
◼ Non-compliance with the installation specifications outlined in this
manual may lead to damages such as microcracks in modules or potential
fire hazards.
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