D84-P06-01 GB R2
28/07/2020
www.photowatt.com
12
6.1
MOUNTING METHODS FOR FRAMED BIFACIAL
MODULE (BOLTING)
•
The mounting method has been qualified by
EDF ENR PWT, as well as certified by VDE and
CSA.
•
Modules should be bolted to support structures
through the mounting holes in the rear frame
flanges only.
•
Each module must be securely fastened at a mi-
nimum of 4 points on two opposite sides.
M8 X 1.25 (5/16”) bolt and nut should be used.
Plain washer size should be M8 with outer
diameter 16 mm.
The yield strength of bolt and nut should not be
less than 450 MPa.
NOTICE
Suitable bolt length should be chosen based on ac-
tual module frame height.
For bifacial module with 30 mm frame height, our
recommended maximum bolt length is 20 mm
in order to properly insert the bolts through the
mounting hole. The system designer is responsible
to check that the racking supplier specified bolt
length comply with above requirement and will not
affect installation.
•
Tightening torques should be within 17-23 Nm
(12.5-17.0 ft-lbs) for M8 (5/16”) coarse thread
bolts, depending on bolt class.
•
In areas with heavy wind loads, additional
mounting points should be used. The system
designer and the installer are responsible for
calculating the load and ensuring that the sup-
port structure meets the requirements.
•
Modules should be bolted at the following hole
locations depending on the configuration and
load:
Summary of Contents for PW60HT-C-XF
Page 1: ...INSTALLATION MANUALS For professional use only...
Page 2: ...INSTALLATION MANUAL FOR STANDARD MODULES For professional use only...
Page 27: ...INSTALLATION MANUAL OF DOUBLE GLASS MODULES For professional use only...
Page 42: ...INSTALLATION MANUAL OF BIFACIAL MODULES For professional use only...