© 2021 Sunman (Zhenjiang) Company Limited
。
All rights reserved. Specifications included in this manual are subject to change without notice.
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version 2021A page7 / 20
TM
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Ensure that components of other systems do not cause damaging mechanical
or electrical performance effects on the modules.
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Allow 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.
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The number of bypass diodes provided varies depending on the module model.
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Connect the appropriate number of modules according to the voltage
specifications of the inverter used in the system.
Even at the worst 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 verified overcurrent protection device is
connected in series with each string of modules, three strings or more modules
can be connected in parallel.
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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.
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In order to reduce the risk of indirect lightning strikes, loops should be avoided
when designing the system.
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The modules should be securely fastened to withstand all possible loads,
including wind and snow loads.
Optimal orientation and inclination
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In order to achieve maximum annual power generation, the optimal orientation
and inclination of the PV module should be determined first.
The maximum
electrical energy is typically generated when sunlight is directed onto the PV
module.
Avoid shadows
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Even small shadows (such as dust) can cause a drop in power generation. If all
surfaces of the module are uncovered throughout the year, the module is
considered "no shadow". Ensure that the sun shines on the modules even on
the shortest day of radiation all through the year.
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EVA aging caused by frequent occlusion of modules and long-term heating of
the diode can affect the lifetime of the module.
