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EN-Rev IM/GN-AM-EU/2.71 Copyright © June, 2021. CSI Solar Co., Ltd.
www.csisolar.com
electrical and mechanical characteristics of Canadian
Solar crystalline silicon PV modules can be found in Annex
A (Module Specifications) on www.csisolar.com. Main
electrical characteristics at STC are also stated on each
module label. Please refer to the datasheet or the product
nameplate for the maximum system voltage.
Under certain conditions, a module may produce more
current or voltage than its Standard Test Conditions rated
power. As a result, the module short-circuit current under
STC should be multiplied by 1.25, and a correction factor
should be applied to the open-circuit voltage (see Table 1
below), when determining component ratings and
capacities. Depending on your local regulations, an
additional 1.25 multiplier for the short-circuit current
(giving a total multiplier of 1.56) may be applicable when
sizing conductors and fuses.
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:
𝐂
Voc
= 𝟏 − 𝜶
𝑽𝒐𝒄
× (𝟐𝟓 − 𝐓)
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.
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 the
module pallets with short side. For unloading CS7N-MS
and CS7L-MS modules, the length of the forklift teeth
should be longer than 1250mm and the width of forklift
teeth should be wider than 600mm (from outer edge to
outer edge ).
