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GB Modules Installation and User Manual Page 9
3. Mounting hole installation (2P tracker)
Type
Mechanical load (Pa)
Safety factor
Schematic diagram
Purlin parallel to
long-side frame
+1600
- 1600
1.5
Notes:
• To maximize mounting longevity, Yingli Solar strongly recommends the use of corrosion proof (stainless steel) attachment hardware.
• Parts in contact with the modules should use flat stainless steel washers of minimum 1.4 mm thickness with an minimum outer diameter of 15.57 mm.
• Modules can be attached using the mounting holes (the number of mounting holes used for a single long-side frame
≥
2, including at least one φ7×10 mm hole) on the back of the
module frame, by fixing the module to the support rails with bolts.
• Secure the module in each mounting location with M6 and M8 bolts, and matching flat washers, spring washers and nuts, and tighten to a torque of 14~20 N∙m. The tightening steps as
follows: use torque wrench to tighten nut to target torque, nut loosen 90~180 degrees, finally tighten the nut to the target torque and reduce the torque attenuation.
