IMPORTANT SAFETY INSTRUCTIONS This manual contains important safety instructions for the Photovoltaic solar module of SUNWAY SOLAR CO.,LTD (hereafter referred to as "SUNWAY SOLAR). Installers should follow all safety precautions described in this guide as well as local codes when installing a Module. Installing solar photovoltaic systems requires specialized skills and knowledge.
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2.2 Electrical performance safety Photovoltaic Modules can produce DC electricity when exposed to light and therefore can produce an electrical shock or burn. DC voltage of 30 Volts or higher is potentially lethal. Modules produce voltage even when not connected to an electrical circuit or load. Please use insulated tools and rubber gloves when working with Modules in sunlight.
Do not apply paint or adhesive to the Modules top surface. To avoid damage to the backsheet, do not scratch or hit the backsheet. Do not drill holes in the frame. This may compromise the frame strength and cause corrosion of the frame.
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near an island or desert that is prone to produce salt fog, or near water. Modules have passed the IEC 61701 salt-mist, but galvanic corrosion can occur between the aluminum frame of the Modules and mounting or grounding hardware if such hardware is comprised of dissimilar metals.
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Table 1 Recommended tilt angle for fixed systems Latitude Tilt angle 0°~15° 15° 15°~25° The same latitude 25°~30° Same latitude +5° Same latitude +10° 30°~35° Same latitude +15° 35°~40° 40°+ Same latitude +20° 3.3 INSTALLATION REQUIREMENTS FOR BIFACIAL MODULE Under the certain installation conditions, the backside of bifacial cells module will also generate electricity power after receiving the reflected light, which will bring additional power generation gain to the power station system.
Table 2 reflectivity of different surfaces The ground type Water Grassland Ground Concrete Sand Snow Reflectivity range (%) 5-12 12-25 20-33 20-40 20-40 80-85 Due to the different ground clearance height will affect the power generation gain, it is recommended to install the module at a height from 0.5m to 2m.
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of 102 mm (4 inches) between the modules and the surface of the wall or the roof is required to allow air to circulate behind the Modules for heat dissipation. The position of junction box should be on the top side, and away from the ground.
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4.2 Installation methods for normal modules 4.2.1 Modules installed with mounting holes Modules should be bolted to support structures through total 8 mounting holes located in the frame’s back flanges with minimum positive design load 1600Pa (Safety factor is 1.5) and negative design load 1600Pa (Safety factor is 1.5).
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4.2.2 Modules installed with clamps Modules should be mounted using specialized clamps as shown in Figure 2. Remark: Some combinations of the material could be used, regarding the detailed information, please refer to the listing report. A) A Module should be attached on a supporting structure rail by metal clamps. It is recommended to use the clamps under the following condition or approved by system installation: Size: Clamp A width≥50mm, Clamp A width≥38mm Thickness: Following as Clamp A and Clamp B...
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Fig. 4 Mechanical Module Mounting Direction Load Pressure Designed Backsheet-Glass mechanical load 120/132/144 片单玻组 3600/1600, 件 safety factor 1.5 A=1/4L±50mm;L=Module length *NOTE: The crossbeam is perpendicular to the long side frame. The above described distance is from the module edge to the middle of the clamp. Clamps length ≥60mm.
5. Electrical Installation 5.1 Electrical Property Rated electrical characteristics such as Pmax is +/-3 % and Voc +/-3% and Isc +/-3% of tolerance values at Standard Test Conditions. Under normal conditions, the photovoltaic Modules may experience conditions that produce more current and/or voltage than reported at Standard Test Conditions.
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sunlight resistant cable ties and/or wire management clips specifically designed to attach to the Module frame. While the cables are sunlight resistant and waterproof, where possible, avoid direct sunlight exposure and water immersion of the cables. Cable arrangement must comply with local laws and regulations.
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6. Grounding The Modules use an anodic oxidized aluminum frame to resist corrosion. So the frame of Modules should be connected to the equipment grounding conductor to prevent thunder and electrical shock. All PV module frames and mounting brackets must be properly grounded in accordance with the applicable national electrical code.
Fig. 5: Installation Methods Note: The figure above is using TYCO. 1954381-1 (recommended) 6.2 Other professional grounding devices The electrical contact points of all the above grounding methods should penetrate the anodized film of the aluminum frame. PV modules can be grounded by other grounding devices, which must be reliable and certified.
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B) Corrosion along the cells’ bus-bar. The corrosion is caused by the dampness infiltrated into the Modules when the surface encapsulation material damaged during the installation or transportation. C) If there is burning vestige on the backsheet 8.2 Connector and cable inspection It is recommended to conduct electrical preventive inspection and maintenance every 6 months Check the tightness of the connector and whether there is any external sheath damage or direct sunlight, and whether the connection is solid.
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