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EN-Rev IM/GN-AM-EN/2.9 Copyright © March, 2022. CSI Solar Co., Ltd.
www.csisolar.com
General
requirements
Clean the grounding components and make sure that they are dry and clean. The coating must
cover all of the grounding components and junction areas of the module frame or mounting
system. Please refer to the figure below for more details.
The coating should be applied in a dry atmosphere (at least 24 hours) under the following
conditions: relative humidity RH
≤
75%, ambient temperature T>5°C.
Maintenance
period
Three months
Five years
D.3.0:
ANTI-CORROSION
SUGGESTIONS
FOR
RACKING SYSTEMS
The warranty does not cover the damage to the
mounting system caused by corrosion if the mounting
system is not provided by Canadian Solar. The
requirements below apply to two main mounting
systems: aluminum alloy-based and Al-Mg-Zn alloy-
based racking for rooftops and galvanized steel-based
structures for ground-mounted solar farms. To prevent
salt-mist corrosion, Canadian Solar requires strict
compliance with the following principles:
Use
approved
corrosion-resistant
materials (e.g. stainless steel SUS 316 or carbon
steel with a hot-dip galvanized coating) for any
racking or BOS components used in coastal
areas.
Process specifications for the different
components must comply with relevant
international anti-corrosion standards.
Minimum coating thicknesses for hot-dip
galvanized and anodizing oxide components
must comply with the standard minimum
requirements stipulated in JIS8641 and JIS8601.
Process
Minimum coating thickness
Standard
Hot-dip galvanizing
(carbon steel)
HDZ55 (76um)
ISO1461
JIS8641
Anodizing oxide
(aluminum alloy)
AA20 (20um)
ISO7599
JIS8601
Use mounting components that contain the same
metals or metals with a similar electrochemical
potential. The metal’s coating should also be taken into
account. There may be a big difference between the
electrochemical potentials of two different coating
materials.
D.4.0: Precautions and General Safety
