3. Wiring and connection
a) Before the installation, please read carefully the operation instructions of PV system. Using multi-connecting cables to
make the PV modules in series or parallels, which is determined by the customers’ requirements on the solar system power,
current, voltage etc.
b) Please connect similar current level modules for series connection, and output voltage should not be higher than
permitted system maximum voltage. Module number of each series depends on the system design, inverter type and the
installation environment.
c) The max rated fuse current of each series is marked on the label of each module and also in the specification sheet. The
rated fuse current refers to the highest reverse current that each module can bear. Based on the max fuse current and
installation requirements of the local electrical performance, please match and choose the suitable fuse to protect the PV
modules in series or parallels.
d) Opening the connector of control system and connect the cables from the PV arrays to the connector in accordance with
the installation indication of the PV control systems. The cross-sectional area and cable connector capacity must satisfy the
maximum short-circuit of PV system (For a single component, we recommended the cross-sectional area of cables is 4mm2
and the rated current of connectors is more than 10A), otherwise the connecting cables and connectors will be over heating.
Please pay attention that the temperature limit of the cables is 85°C.
e) The electrical connections must be properly in accordance with local and national electrical rules.
f) All PV modules are included with the bypass diodes. Please notice that the diodes, cables and junction boxes maybe
damaged caused by the wrong installation.
4. Maintenance
PV modules need to be inspected and maintenance regularly, especially during the warranty period. In order to make
sure modules reaching the excellent performance, DAH Solar adopts following maintenance measures:
4.1 Appearance Inspection
Please kindly check the PV modules carefully, ensure the modules are without appearance faultiness. Especially pay
attention to following points:
a) Double glass protector works as the protection during the transportation, it does not belongs to appearance
controlling , buyers can tear them off or save by themselves.
b) Module’s glass damaged or not.
c) Whether have scratches of sharp objects hit panels surface.
d) Whether solar panel is blocked by obstacle and other objects or not.
e) Whether have corrosion near grid finger of solar cell. This is caused by the damage of laminates surface during the
installation or transportation, steam filter into inside of laminates.
f) Checking whether the fixed screws are loose or damaged between modules and brackets or not, and then adjust it or
repair it in time.
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