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EN-Rev IM/GN-EN/1.0 Copyright © January, 2023. CSI Solar Co., Ltd.
6.2 MOUNTING METHOD: CLAMPING
The mechanical load test with these mounting methods
were performed according to IEC 61215.
Clamping methods will vary and are dependent on the
mounting structures. Please follow the mounting guidelines
recommended by the mounting system supplier.
Each module must be securely fastened at a minimum of
four points on two opposite sides. The clamps should be
positioned symmetrically. The clamps should be positioned
according to the authorized position ranges defined in the
tables below. Install and tighten the module clamps to the
mounting rails using the torque stated by the mounting
hardware manufacturer.
The system designer and the installer are responsible for
load calculations and for proper design of support structure.
For bifacial modules, the mounting rails shall be designed
to limit as much as possible the shade on module rear side
cells.
Canadian Solar’s warranty may be void in the cases where
improper clamps (For example, the clamp height does not
match with the frame height) or unsuitable installation
methods are found. When installing inter-modules or end-
type clamps, please take the following measures into
account:
1.
Do not bend the module frame.
2.
Do not touch or cast shadows on the front glass.
3.
Do not damage the surface of the frame (to the exception
of the clamps with bonding pins).
4.
Ensure the clamps overlap the module frame as
specified in table 4. For configurations where the
mounting rails run parallel to the frame, precautions
should be taken to ensure the bottom flange of the
module frame overlaps the rail as specified in table 4 as
well.
5.
Ensure the clamp thickness is at least 3 mm (0.12 in).
Clamp material should be anodized aluminum alloy or
stainless steel.
Clamp positions are of crucial importance for the reliability
of the installation. The clamp centerlines must only be
positioned within the ranges indicated in table below,
depending on the configuration and load.
Table 4: Overlap depth and length in clamp mounting method
Overlap between
Dimension
type
Minimum overlap
dimension
Applies to
Module frame and clamp
Depth
10 mm (0.4 in)
CS6W, CS7L and CS7N types
5 mm (0.2 in)
Other module types
Length
80 mm (3.15 in)
Uplift load > 2400 Pa
40 mm (1.57 in)
Uplift load ≤ 2400 Pa
Module frame bottom
flange and mounting rail
Depth
15 mm (0.59 in)
CS6W-MB-AG, CS7L-MB-AG, CS7N-MB-
AG
10 mm (0.4 in)
Other double glass modules
15 mm (0.59 in)
All single glass modules
