WINAICO is a trademark of Win Win Precision Technology Co., Ltd.
SIM2205-01(EN)
12
Maximum mechanical load
Ensure that the maximum mechanical load is not exceeded, and take into account o f any site-dependent loads
(See
Chapter
2. PRODUCT DIMENSIONS
). Please note that the module can bend under heavy loads. Do not use cable
ties or other fastening elements on the rear side of the module, because uneven structures can damage the modules.
Note
The middle clamps can be used as spacers between the module rows when mounting the modules. To avoid any
possible stresses and failure to comply with dimensions, a gap should be maintained between the module rows. We
recommend a gap at least 10 mm. For aesthetic reasons we recommend using black clamps for mounting our module
series with black anodized frame and black backsheet. Do not touch live terminals with bare hands, and always use
insulated tools for electrical connections.
Laying the cables
To avoid conductor loops, the strings (+ and –) should be laid together. Cable trays can be used if required. Roof
penetration should be minimized to one if possible. PVC cables are not recommended. Bare copper H07RN cables are
not recommended because the contact resistance of crimping location will probably exceed the permitted value as the
copper wires oxidise over time. WINAICO recommends installers should use certified solar cables (EN 50618: 2014) for
direct current (DC) wiring in PV systems. The minimum wire size should be 12 AWG.
ATTENTION:
Lightning protection is recommended for PV systems that are to be installed in
locations with high probability of lightning strikes.
6.2 Electrical installation
Module selection
Ensure the module meets the technical requirements of the system as a whole. Ensure that other system components
do not exert damaging mechanical or electrical stresses on the module. When connected in series, modules must all
have the same current rating. When connected in parallel, the modules must all have the same voltage rating. The
modules must not be connected together to create a voltage higher than the permitted system voltage. Ensure that the
mounting system can also withstand the anticipated loads, e.g. wind and snow loads. There are openings at the base
of the module frame to allow water from precipitation to drain away. Ensure that the functionality of these openings is
not restricted by the module installation.
Diodes and fuses
The shading of individual solar cells or solar modules can lead to the shaded area heating up as it begins to consume
electrical energy, as opposed to generating. The use of bypass diodes to bridge the shaded areas results in a
reduction in the heating process, and mitigates the performance losses of the respective PV system. WINAICO
solar modules are factory-fitted with integrated bypass diodes or other design elements, which offer efficient
protection to the solar cells. Please be noted that the bypass diodes are not overcurrent protection devices.
As per IEC 62446-1, the installation of additional blocking diodes or fuses is necessary with the parallel connection of
module strings because the integrated bypass diodes are only for module internal protection and do not regulate the
current flow in a parallel circuit in the event of the shading or defect of individual module strings. A failure to comply
may result in the corresponding solar modules (including the electronic components contained within them) being
damaged.
WINAICO recommends the DC fuse should be used in each module string, in order to protect the solar modules in the
