CanadianSolar CS6A-P Installation Manual

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Contents

CanadianSolar CS6A-P Installation Manual Manual pdf 7 page image

www.canadiansolar.com| 7· The recommended maximum series fuse rating isstated in a table in the Annex.· Modules should be safely fixed to bear all expectedloads, including wind and snow loads. A minimumclearance of 6.5 mm (0.25 in) between modulesis required to allow for thermal expansion of theframes.· The small drainage holes on the underside of themodule must not be blocked.OPTIMUM ORIENTATION AND TILT· To maximize your annual yield, find out the opti-mum orientation and tilt for PV modules in yourregion. The highest yields are achieved when sun-light shines perpendicularly onto the PV modules.AVOID SHADING· Even minor partial shading (e.g. from dirt deposits)reduces yields. A module can be considered to beunshaded if its entire surface is free from shadingall year round. Sunlight should be able to reach themodule even on the shortest day of the year.· Constant shading conditions can affect moduleservice lifetime, due to accelerated ageing of theencapsulation material and thermal stress on thebypass diodes.RELIABLE VENTILATION· Sufficient clearance (at least 10 cm (3.94 in))between the module frame and the mountingsurface is required to allow cooling air to circulatearound the back of the module. This also enablescondensation or moisture to dissipate.5.1MODULE WIRINGCORRECT WIRING SCHEME· Ensure that the wiring is correct before starting up thesystem. If the measured open circuit voltage (Voc) andshort-circuit current (Isc) differ substantially from thespecifications, this indicates that there is a wiring fault.· When modules have been pre-installed but the systemhas not been connected to the grid yet, each modulestring should be kept under open-circuit conditionsand proper actions should be taken to avoid dust andmoisture penetration inside the connectors.CORRECT CONNECTION OF PLUG CONNECTORS· Make sure that connections are safe and tight.Plug connector should not be subjected to stressfrom the exterior. Connectors should only be usedto connect the circuit. They should never be usedto turn the circuit on and off.· Connectors are not waterproof when unmated.When installing modules, connectors should beconnected to each other as soon as possible orappropriate measures should be taken to avoidmoisture penetration.USE OF SUITABLE MATERIALS· Only use dedicated solar cable and suitableconnectors (wiring should be sheathed in asunlight-resistant conduit or, if exposed, should besunlight-resistant itself) that meet local fire, buildingand electrical regulations. Please ensure thatall wiring is in perfect electrical and mechanicalcondition.· Installers may only use single conductor, 2.5-10mm2 (8-14 AWG), 90°C wet rated solar cable, withproper insulation that is able to withstand themaximum possible system open-circuit voltage (i.e.TUV 2PfG1169 approved). Only copper conductormaterial should be used. Select a suitable conduc-tor gauge to minimize voltage drop.CABLE AND CONNECTOR PROTECTION· Secure the cables to the mounting system usingUV-resistant cable ties. Protect exposed cablesfrom damage by taking appropriate precautions(e.g. placing them inside a plastic conduit). Avoidexposure to direct sunlight.· A minimum bending radius of 60 mm (2.36 in) isrequired when securing the junction box cables tothe racking system.· Do not place connectors in locations where watercould easily accumulate.