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EN-Rev IM/GN-AM-EU/2.81 Copyright © December, 2021. CSI Solar Co., Ltd.
www.csisolar.com
Table 1: Low temperature correction factors for open-
circuit voltage
Lowest Expected Ambient
Temperature (°C/°F)
Correction Factor
24 to 20 / 76 to 68
1.02
19 to 15 / 67 to 59
1.04
14 to 10 / 58 to 50
1.06
9 to 5 / 49 to 41
1.08
4 to 0 / 40 to 32
1.10
-1 to -5 / 31 to 23
1.12
-6 to -10 / 22 to 14
1.14
-11 to -15 / 13 to 5
1.16
-16 to -20 / 4 to -4
1.18
-21 to -25 / -5 to -13
1.20
-26 to -30 / -14 to -22
1.21
-31 to -35 / -23 to -31
1.23
-36 to -40 / -32 to -40
1.25
Alternatively, a more accurate correction factor for the
open-circuit voltage can be calculated using the following
formula:
Voc
=
−
× (
− )
T (°C) is the lowest expected ambient temperature at the
system installation site.
α
Voc
(%/°C) is the voltage temperature coefficient of the
selected module (refer to corresponding datasheet).
Electrical calculations and design must be performed by a
competent engineer or consultant.
Please contact Canadian Solar’s technical support team
for additional information pertaining to engineering
optimization and approval of project specific module
string lengths.
4.0 UNPACKING AND STORAGE
PRECAUTIONS
Modules should be stored in a dry and ventilated
environment to avoid direct sunlight and moisture. If
modules are stored in an uncontrolled environment,
the storage time should be less than 3 months and
extra precautions should be taken to prevent
connectors from being exposed to moisture or sunlight,
like using connector endcaps. In any circumstance, for
pallets of modules packaged in landscape orientation,
stacking of no more than two layers is allowed, for
pallets of modules packaged in portrait orientation,
stacking is not allowed.
When unloading modules pallets from flat truck, please
use a crane or a forklift to remove the module pallets.
When unloading modules pallets from containers,
please use a fork lift to remove the module pallets, and
the forklift should be close to the ground in order to
avoid the top of module pallets touching the top of the
cabinet door. The thickness of forklift teeth should be
less than 75mm, and the length of the forklift teeth
should be longer than 2300mm, when unloading 6W-
MS module pallets with short side. For unloading CS7N-
MS and CS7L-MS modules, the thickness of forklift teeth
should be less than 75mm, the length of the forklift
teeth should be longer than 1250mm and the width of
forklift teeth should be wider than 600mm (from middle
to middle of the forklift teeth). Consult your Canadian
Solar representative for more detailed unloading
instructions.
Unpack module pallets carefully, following the steps
shown on the pallet. Unpack, transport and store the
modules with care.
Modules must always be unpacked and installed by two
or three people. Always use both hands when handling
modules.
For vertical package, unpacking and handling should be
done with care. Visit our website or contact your
Canadian Solar representative for more detailed
unpacking requirements.
