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Clamps must apply force collinear with the 'wall' of
the module frame
and not only to the
top flange.
Clamps
shall
not
apply
excessive
force
to
the
top
frame, warp the top
flange, or contact
the
glass-
these
practices void the
module warranty and risk glass breakage. Figure 1a
illustrates locations for top frame clamp force. Avoid
clamping within 50mm of module corners to reduce
risk of frame corner deflection and glass breakage.
When clamping to the module frame, torque should
never exceed 15 N.m to reduce chances of frame
deformation, if the clamp datasheets show a specific
torque value which is lower than 15 Nm the installer
should follow the torque value which ever is more
stringent. A calibrated torque wrench must be used.
Mounting
systems
compatibility before installing specially when the
system is not using Clamps or clips. Please contact
Maxeon for the approval of the use of non-standard
pressure clamps or clips where torque values are
higher than otherwise stated.
Minimum clamp width allowance is ≥35mm, and for
corner clamping the minimum clamp width is:
≥50mm. Clamps should not be in contact with the
front glass and clamps should not deform the frame.
Maxeon does not recommend nor endorse the
application on the modules of clamps which, as part
of their grounding or earthing function, have teeth or
claw features (see Figure 2) which may, individually
or cumulatively, cause the module breakage due to
(and without limitation):
i)
the grounding features touching the front glass
which
is
incorporated
into
the module due to
the position of such
grounding feature,
ii) the
shape,
the
position
or
the
number of the grounding features deforming the
module top frame, or
iii) the
clamp
being
installation.
End Mount: End mounting is the capture mounting of
3)
the length of the module's shorter frames with clamps
on each shorter sides of the frame. Three different
configurations are possible: 1) with two mounting
rails under the complete length of each shorter side
of the Modules, with two mounting rails parallel to the
long side of the Modules without any mounting rail
(Appendix).
The end-mounting rails and clips or
clamps must be of sufficient strength to allow for
maximum designed test pressure of the module.
©2024 Maxeon Solar Technologies, Ltd. All rights reserved. Specifications included in this manual are subject to change without notice.
Force must not
deform
Force has
top frame flange or
to be
glass may break
applied
in line
with
frame
wall
Figure 1a: Clamp Force Locations
should
be
evaluated
Figure 2
over-torqued
during
Safety and Installation Instructions - Document 001-15497 Rev.AB
Verify this capacity with the mounting system of
vendor before installation.
Hybrid Mount: Combination with clamps or clips
4)
located on longer or shorter sides of Modules are also
possible, see Table 1.2 for allowed configurations. In
any case, four clampings points are needed.
Maxeon specified or Maxeon supplied mounting
5)
systems. Modules mounted with strict adherence to
Maxeon documentation, using hardware systems
supplied by or specified by Maxeon.
5.3 Ground Mount Applications for Bifacial modules
Various environmental and installation parameters affect
bifacial gain. Albedo is a measure of the amount of light
reflected from the ground surface. A higher albedo factor
will increase irradiance on the backside and result in
higher bifacial gain of the module. The surface conditions,
month of the year, time of day, GHI and DNI both
influence the amount of incident rearside irradiance.
for
Maxeon recommends to check with solar module mounting
hardware supplier in order to determine the Structure
Shading factor of your particular installation. The
Structure Shading Factor varies with racking system
design,
irradiance,
installation above ground and has an overall impact on the
rear side irradiance mismatch.
The Rearside mismatch losses are proportional to the
albedo, height of the modules above ground and structure
shading factor. The irradiance non-uniformity on the
rearside results in mismatch generally as the albedo
increases and installation height of the modules are lower
to the ground.
5.4 Rooftop Applications for Bifacial modules
Bifacial modules use direct, reflected or diffuse sunlight at
the rearside to generate additional power. Therefore, it is
recommended to use bifacial modules installed on flat roof
applications.
In order to maximize the bifacial gain at the rooftop
applications the following parameters listed below should
be considered:
•Surface Albedo
•Roof Integrity
•Module Tilt Angle
•Module Elevation
•Structural Backside Shading
the
The bifacial modules can be mounted both landscape or
portrait orientation as shown in Appendix section.
When installing a bifacial module on a roof, check
applicable building codes and ensure that the roof
construction and the structural load calculations of the
building are suitable.
Bifacial gain tends to be most effective with a higher tilt
angle.
As the tilt angle and the module elevation from the
underlying surface increases, more reflected light and
diffuse light can be captured by the module. The mounting
rails shall be designed to limit the rear side shading as
much as possible. Obstacles between modules and the
MAXEON SOLAR TECHNOLOGIES, LTD.
albedo
and
height
EN
of
module
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