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2.3.2 Fixation with clamps
The module clamps should not come into contact with the front glass and must not deform the
frame. Be sure to avoid shadowing effects from the module clamps. The module frame is not to
be modified under any circumstances. When choosing this type of clamp-mounting method,
please be sure to use at least four clamps on each module, two clamps should be attached on
each long sides of the module. Depending on the local wind and snow loads, if excessive
pressure load is expected, additional clamps or support would be required to ensure the module
can bear the load. The applied torque value should be big enough to fix the modules steadily
(Please consult
with the clamp or support’s supplier for the specific torque value). Please find
detailed mounting information in the below illustration, the mounting place distance is
suggested bigger than J and less than K.
The installation diagram of clamp is shown in figure 3.
Note: The Movement of the mounting rail and the clamps center line are recommended to be
within the black arrow area.
When installing modules using clamps on the long side of the frame, the applicable product
types and installation locations are shown in figure 4 and table 2.
Figure 3: PV module installed at the side with Clamp fitting method
Middle modules installation
Fringe modules installation