Date: 2019.9.24 Doc No: PS-M-0691 Ver. B Page - 21 - of 27
Example C: C structure steel type 1 racking installation
Trina suggests using M8 bolts to fix the clamp. The torque for M8 screw is 16-20 N*M.
When choosing the bolts and T-
shape nuts for the clamp, please note your racing’s dimensions first.
For C structure steel type 1 racking, due to the amount of space inside the racking section, many choices
are available including T-shape nuts.
*NOTE: Please consult with a Trina Solar engineer before installing with the frameless clamps
PV modules can be mounted to the substructure using either corrosion-proof M8 bolts placed through the
mounting holes on the rear of the module or specially designed module clamps.
Regardless of the fixing method the final installation of the modules must ensure that:
A clearance of at least 115mm(4.5in) (recommended) is provided between modules frame and the surface
of the wall or roof. If other mounting means are employed this may affect the UL Listing or the fire class
ratings.
The minimum distance between two modules is 10mm(0.4in).
The mounting method does not block the module drainage holes.
Panels are not subjected to
static loads exceeding the maximum permissible loads, and are not subject to
excessive forces due to the thermal expansion of the support structures.
*NOTE: The drain holes cannot be blocked in any situation during installation or use.
6.2.4.3 CLAMP OPTIONS
*NOTE: Need two support rails below the PV module to make sure the Mechanical load.
60Pcs MODULES ( frameless)
Mechanical
Load
Pressure
Safety
Facto
r
Length
Of The
Clamp
Mounting Direction(The beam is parallel to the long side.)
