www.znshinesolar.com
Document No.
：
QES/ZX-RD-III032A
- 16
D. Mounting with Clamps applied for framed Double-glass and Bifacial double-glass
ZNSHINE SOLAR has tested its modules with a number of clamps from different manufacturers, with a
mounting bolt of at least M8. The length of clamp ≥80mm, thickness
≥
3mm. If the customer needs a different size
of clamps, it should be fully evaluated and approved by ZNSHINE SOLAR.
The clamp must overlap the module frame by at least 7mm but no more than 10mm.
Use at minimum 4 clamps to attach modules to the mounting rails.
Modules clamps should not come into contact with the front glass and must not deform the frame.
Be sure to avoid shadowing effects on the solar cells from the module clamps.
The module frame is not to be modified under any circumstances.
When choosing this type of clamp-mounting method, use at least four clamps on each module, two clamps
should be attached on each long sides of the module (for portrait orientation) Depending on local wind and snow
loads, additional clamps may be required to ensure that modules can bear the load.
Applied torque should refer to mechanical design standard according to the bolt customer is using, ex: M8
16-20N.m(140-180lbf.in)
End Clamp installation
Middle Clamp installation
Module
Mechanical Load
Pressure
Safety
factor
Mounting Direction
60/66/72/120/132/144pcs
double-glass
+3600Pa/-1600Pa
1.5
A=1/4L±50mm
；
L=Module length
*NOTE:
1. The crossbeam is perpendicular to the long side.
This installation may cause the cell covered, so ZNSHINE
SOLAR does not recommend this installation for Framed
Bifacial double-glass.
2. The above described distance is from the module edge
to the middle of the clamp.
Clamps length
≥
80mm.
3. Need two support rails below the PV module to make
sure the Mechanical load.
4. The load is an empirical value of a standard module
based on a standard installation mode, and the specific
information shall be consulted by ZNSHINE SOLAR.
