Sep 1, 2014
Version: HW3.819.
242
SCV1 Page
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Installation Method
Snow/Wind Pressure
5400/4000 Pa
Snow/Wind Pressure
5400/4000 Pa
HSL60
HSL72
Bolting Mounting
3.
ELECTRICAL INSTALLATION-WIRING
3-1.
Correct wiring scheme
To minimize the risk of indirect lighting strike, avoid forming closed loops when designing the system. Check that
wiring is correct before starting the generator. If the measured open circuit voltage (Voc) and short-circuit
current (Isc) differ from the specifications, there may be a wiring fault.
3-2.
Solar module plug connectors
All solar modules are equipped with solar cables with 4-6mm² serving a temperature range from -40°C to 90°C.
Furthermore, customer also can specify the cable length. The connectors have specified polarities; they are
marked with ´+´ and ´-´ signs. Make sure that the connection is safe and tight. Connectors should only be used to
connect the circuit, but never used to turn the circuit on or off.
3-3.
Use of proper components
Use cable extensions and plugs that are designed for outdoor applications. Ensure that they are in good
electrical and mechanical condition. Only cables with one conductor are to be used.
Ensure that all materials meet the requirements of the systems` maximum voltage, current, moisture, and
temperature when they are exposed to sunlight.
Under normal conditions, a photovoltaic module is likely to produce more current and/or voltage than that
reported under Standard Test Conditions. Accordingly, the values of Isc and Voc marked on the module should
be multiplied by a factor of 1.25 when selecting electrical components voltage ratings, conductor capacities,
fuse type, and type of control components connected to the PV output.
The maximum series fuse rating is: 15A for modules with 156x156mm cells. The maximum reverse current is
known as series fuse rating multiplied by a factor of 1.35. Each module (or series string of modules so connected)
shall be provided with the maximum series fuse as specified.
3-4.
Bypass Diodes
When modules in series are partially shaded, it may cause reverse voltage across cells or modules, this may
cause undesirable heating to occur. The use of a diode to bypass the shaded area can minimize both heating
and array current reduction.
All Hanwha SolarOne modules are equipped with factory installed bypass diodes. The factory installed diodes
provide proper circuit protection for the system.
