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2019.01 E/0 www.sunportpower.com
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These junction boxes have been designed to be easily
interconnected in series for their good connected cable and the
connector with IP67 protection grade. Each modules has two
single conductor wires, one positive and one negative, which
are pre-wired inside the junction box. The connectors at the
opposite end of these wires allow easy series connection of
Sunport’s modules by firmly inserting the positive connector
of a module into the negative connector of a Sunport module
until the connector is fully seated.
5.3.2 Cables
Use field wiring with suitable cross-sectional areas that are
approved for use at the maximum short-circuit current of the
module. Sunport recommends installers use only sunlight
resistant cables qualified for direct current (DC) wiring in PV
systems.
（
Satisfy the code TÜV 2 PfG 1169
、
4mm²
、
Temperature range:-40
℃
to
﹢
90
℃
）
; Cables should be fixed
to the mounting structure in such a way that mechanical
damage of the cable and/or the modules is avoided; Do not
apply stress to the cables; For fixing, use appropriate means,
such as sunlight resistant cable ties and/or wire management
clips specifically designed to attach to the modules frame.
While the cables are sunlight resistant and waterproof, where
possible, avoid direct sunlight exposure and water immersion
of the cables.
5.3.3 Connectors
Keep connectors dry and clean, and ensure that connector
caps are hand tight before connecting the modules. Do not
attempt to make an electrical connection with wet, soiled, or
otherwise faulty connectors. Avoid sunlight exposure and
water immersion of the connectors. Avoid allowing connectors
to rest on the ground; Faulty connections can result in arcs and
electrical shock. Check that all electrical connections are
securely fastened. Make sure that all locking connectors are
fully engaged and locked.
5.3.4 Bypass diodes
The junction boxes used with Sunport’s modules contain
bypass diodes wired in parallel with the PV cell strings. In the
case of partial hot spot, the diodes bypass the current
generated by the cells with hot spot, thereby limiting modules
heating and performance losses. Bypass diodes are not
over-current protection devices. In the event of a known or
suspected diode failure, installers or maintenance providers
should contact Sunport. Never attempt to open the junction
box by yourself.
6.MAINTENANCE AND REPAIR
Sunport recommends that PV systems shall be periodically
inspected by the installer or qualified person.
6.1 Maintenance
Whether the glass is broken; Whether there is burning vestige
on the backsheet; All cables and connector attachments are
undamaged and properly secured; Mounting and grounding
components are tightly secured with no corrosion.
6.2 Repair
In order to reduce the potential for electrical and thermal
shock, Sunport recommends cleaning modules during early
morning or late afternoon hours when solar radiation is low
and the modules are cool, especially in regions with high
temperatures.
When modules are working, there should not be
environmental influence factors to cast shadows and cover
part or even all of the modules, such as other modules, system
support, bird drops and a lot of dust, clay or plant and so on,
these may distinctly reduce the power output. Sunport advises
that there should be no obstructed object over the modules
surface at any time.
The cleaning frequency depends on the accumulated
frequency of the fouling. In many instances the front surfaces
of the modules will be cleaned with the rain, and we can
decrease the cleaning frequency; Sunport’s modules may
contain a hydrophobic anti-reflective coating on the glass
surface to enhance power output and reduce dirt and dust
buildup; In order to avoid module damage, do not clean PV
modules with a power washer or pressure washer
，
it is
recommended to wipe the glass surface with a wet sponge or
