REC N-PEAK Series Installation Instructions Manual

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REC N-PEAK Series Installation Instructions Manual Manual pdf 7 page image

REC Installation Manual - N-Peak - IEC 61215 /61730Rev C - 07.19 Ref: NE-06-227MouNtiNg MEtHods: ClaMPiNg WitH rails ParallEl to tHE sHort sidEREC N-Peak solar panels secured by clamping to mounting rails has been found to comply with IEC 61215 & IEC 61730 requirements for downwardpressure,e.g., snow, of up to 7000 Pa (4666 Pa design load*) and upward pressure,e.g., wind, of up to 2400 Pa (1600 Pa design load*) according tothe instructions below (*design loads apply a safety factor of 1.5 to the stated test load, e.g., test load 7000 Pa / 1.5 = 4666 Pa design load). Site-specific factors such as high winds or snow levels must be taken into consideration to ensure this limit is not exceeded. These instructions must befollowed for each clamping method used:• Clamps must be positioned so that both the minimum grip length and the center point of each clamp are located in the required clamping zone,• Follow the clamp manufacturer’s instructions to install the clamps, including the recommended applied torque,• The distance between the end clamp and the end of the rail must be a minimum of 25 mm.When clamping to a rail-based construction, the rails must run underneath the panel to provide support to the frame. Where the rails are positionedparallel to the short side of the panel as per the examples shown in fig. 2, the clamping zones shown in fig. 3 are to be followed. The positioning of therails must ensure that the minimum grip length of the clamp and the central point of the fixation, e.g., the bolt, is fully within the required clampingzone as indicated in fig. 3:Each panel must be clamped in a minimum of four separate zones, with one clamping point in each quarter of the panel (fig. 3).Fig. 2: Clamping of panels with rails parallel to the short side650-520 mm520-420 mm420-340 mm340-208 mm 208-0 mm520-650 mmGRGRGRGR420-520 mm340-420 mm208-340 mm0-208 mm650-520 mm520-420 mm420-340 mm340-208 mm 208-0 mm520-650 mm420-520 mm340-420 mm208-340 mm0-208 mm100 - 250 mm100 - 250 mm100 - 250 mm 250 - 100 mmFig. 3: Clamping zones for panels with rails parallel to short sidea) Long side mounting b) Short side mountingLegend: Test Load Design Load (= Test load / 1.5)Panel quarter division Max. downward load Max. upward load Max. downward load Max. upward load340 - 420 mm 7000 Pa 2400 Pa 4666 Pa 1600 Pa208 - 340 mm; 420 - 520 mm 5400 Pa 2400 Pa 3600 Pa 1600 Pa0 - 208 mm; 520 - 650 mm (long side) 2400 Pa 2400 Pa 1600 Pa 1600 Pa100 - 250 mm (short side)Not permitted (in cases where only four (4) clamping points are used, additional clamps, i.e., ≥5 may be freely located on panel frame)If the panel is secured in two different colored clamping zones, it is rated to the lower load value only.