Sharp ND-R250A5 - Manual (Page 17)

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12. Due to the risk of electrical shock, do not perform any work if the terminals of PV module are wet.
13. Do not touch the terminal box and the end of output cables, the cable ends (connectors), with bare hands during installation or under sunlight, regardless of
whether the PV module is connected to or disconnected from the system.
14. Do not unplug the connector if the system circuit is connected to a load.
15. Do not stomp on the glass at work. There is a risk of injury or electric shock if glass is broken.
16. Do not work alone (always work as a team of 2 or more people).
17. Wear a safety belt if working far above the ground.
18. Do not wear metallic jewelry which can cause electric shock during installation.
19. Do not damage the back sheet of PV modules when fastening the PV modules to a support by bolts.
20. Do not damage the surrounding PV modules or mounting structure when replacing a PV module.
21. Bind cables by the insulation locks. Drooping down of cables from the terminal box could possibly cause various problems such as animal biting, electricity leak-
age in puddle.
22. Take proper measures for preventing the laminate (consisted of resin, cells, glass, back sheet, etc.) from dropping out of the frame in case the glass is broken.
23. Cables shall be located so that they will not be exposed to direct sunlight after installation to prevent degradation of cables.
24. If batteries are used with modules, follow safety precautions of the battery manufacturer.
25. In case of extreme snow build-up, the weight of the snow may cause the module’s frame to deform. Take appropriate preventive measures to minimize any pos-
sible resulting damage.
4. SITE SELECTION
In most applications, the PV modules should be installed in a location where there is no shading throughout the year. In the Northern Hemisphere, the PV modules
should typically face south, and in the Southern Hemisphere, the PV modules should typically face north.
Please make sure that there are no obstructions in the surroundings of the site of installation. Take proper steps in order to maintain reliability and safety, in case
the PV modules are used in areas such as: Heavy snow areas / Extremely cold areas / Strong wind areas / Installations over, or near, water / Areas where installations are
prone to salt water damage(*) / Small islands or desert areas.
(*) If you are planning to use the PV modules where the salt water damage may be possible, please consult with Sharp local agent first to determine an appropriate installation method, or to
determine whether the installation is possible.
5. TILT ANGLE
The tilt angle of the PV module is the measured between the PV module and a horizontal ground surface. The PV module generates the maximum output power
when it faces the sun directly.
5 degrees or more is recommended for the tilt angle of the PV module for the maintenance (See 11. Maintenance).
For the standalone systems with a battery where the PV modules are attached to a permanent structure, the tilt angle of the PV modules should be determined to
optimize the performance when the sunlight is the scarcest. In general, if the electric power generation is adequate when the sunlight is the scarcest, then the angle
chosen should be adequate during the rest of the year. For grid-connected installations where the PV modules are attached to a permanent structure, it is recom-
mended to tilt the PV module at the angle equal to the latitude of the installation site so that the power generation from the PV module will be optimum throughout
the year.
6. WIRING
To ensure proper system operation and to maintain your guaranty, observe the correct cable connection polarity (Figures 1 & 2) when connecting the modules to a
battery or to other modules. If not connected correctly, the bypass diode could be destroyed.
PV modules can be wired in series to increase voltage. Connect wires from the positive terminal of one module to the negative terminal of the next module. Figure 1
shows modules connected in series.
Connect PV modules in parallel to increase current. Connect wires from the positive terminal of one module to the positive terminal on the next module. Figure 2
shows modules connected in parallel.
GENERAL INSTALLATION MANUAL
FIGURE 1: SERIES FOR MORE VOLTAGE FIGURE 2: PARALLEL FOR MORE CURRENT
Ver 9.2 E