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EN-Rev IM/GN-BM-EU/1.93 Copyright © August, 2021. CSI Solar Co., Ltd.
www.csisolar.com
If BAPV, or similar mounting is still required, sufficient
clearance of at least 10 cm (3.94 in) between the module
and the mounting surface needs to be provided to allow
cooling air to circulate around the back of the module.
This also allows condensation or moisture to dissipate.
According to UL61730, any other specific clearance
required for maintaining a system fire rating should
prevail. Detailed clearance requirements pertaining to
system fire ratings must be provided by your racking
supplier.
5.1 MODULE WIRING
CORRECT WIRING SCHEME
Ensure that the wiring is correct before starting up the
system. If the measured open circuit voltage (Voc) and
short-circuit current (Isc) differ from the specifications,
this indicates that there is a wiring fault.
When modules have been pre-installed, but the system
has not been connected to the grid yet, each module
string should be kept under open-circuit conditions and
proper actions should be taken to avoid dust and
moisture penetration inside the connectors.
For double glass modules, Canadian Solar offers several
cable length options to match various system
configurations, which are shown in table 2:
On below figures, bold lines represent cable installation
pathways, while + and - connector correspond to
positive and negative module terminals respectively.
Cables should always be fastened on module frames or
mounting rails, in order to avoid shading on module
rear side.
In case where a cable connection method not included
in below table is used, please confirm suitable cable
length with Canadian Solar’s sales representative.
Table 2: System Cable Scheme for CS3W, CS3U, CS3Y, CS3K, CS6W, CS6R, CS6RA, CS7N and CS7L modules
Module types
Recommended wiring configurations
CS3W-PB-AG,
CS3W-MB-AG,
CS3Y-PB-AG,
CS3Y-MB-AG,
CS6R-H-AG,
CS6RA-H-AG,
CS6W-MB-AG,
CS7N-MB-AG,
CS7L-MB-AG
Landscape installation two rows:
CS3W/CS3Y/CS6W/CS7L/CS7N Cable length per lead = 1400 mm
CS6R Cable length per lead = 1100
CS6RA Cable length per lead = 950
Note: Adjacent modules in the same row need to be rotated 180 degrees for proper
installation.
Portrait installation one row:
CS3W Cable length per lead = 400 mm (+), 280 mm (-)
CS3Y/CS6W Cable length per lead = 410 mm (+), 290 mm (-)
CS7L/CS7N Cable length per lead = 460 mm (+), 340 mm (-)
CS6R/CS6RA Cable length per lead = 410(+) + 290(-)
