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INSTALLATION AND OPERATION MANUAL SOLAR MODULES DUO-G5.X – Q CELLS
INSTALLATION AND OPERATION MANUAL SOLAR MODULES DUO-G5.X – Q CELLS
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Ensure that all necessary safety and functional
tests have been carried out according to
applicable standards.
NOTE! Module damage may occur!
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Ensure that the plug connections are secured away
from any water-channelling surface.
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Integrate the system into the existing lightening
protection system in accordance with the
applicable local regulations.
WARNING! Fire Risk!
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Do not use light concentrators (e.g. mirrors or
lenses).
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Ensure that the cabling is not exposed and/or
hanging and is protected from dirt, moisture and
mechanical friction.
4 ELECTRICAL CONNECTION
4.4 AFTER INSTALLATION
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No dry cleaning or use of rotating brushes.
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Modules must be cleaned manually and only with
sufficient Water.
Functional grounding
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For installations located in tropic regions (between 23.5° N
and 23.5° S) with a module tilt of < 5°, functional grounding at
the negative generator connection on the DC side must be
implemented.
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Ensure that the difference of potential between the negative
generator connection and the local earth potential (e.g. sub-
structure, PE of the inverter) on each string in operation mode
is positive or 0 V.
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Follow the directions of the inverter manufacturer and local
statutory regulations.
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Only use inverters which include lincensed grounding kits.
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Functional grounding has also to be implemented in installation
sites with increased salt content in the air. (e.g. close to the sea).
Protective Grounding
In order to prevent electrical shock or fire, the frame of the module
as well as any non-current-carrying metal parts of the system must
be grounded. While this section provides some information about
grounding the Q CELLS frames and modules, reference should be
made to local statutes and regulations for specific requirements
on grounding. The U.S. National Electrical Code addresses these
issues in Article 250.
Proper grounding is achieved by bonding all exposed non-current-
carrying metal equipment to the appropriately sized equipment
grounding conductor (EGC) or racking system that can be used
for integrated grounding.
Q CELLS frames are protected from corrosion with an anodized
coating, which has to be penetrated in order to ensure proper
bonding. The different methods listed below are suggested methods
for an appropriate bond between the frame and the EGC or racking
system (that will have to be properly grounded). The method appro-
priate for any individual installation will depend on multiple factors.
Option A: Use of a grounding lug
A listed grounding lug can be bonded to the frame using the grounding
holes pre-drilled in the frame. These holes are marked with a ground
symbol, as shown below on the frame section drawing: To install the
grounding lug, follow the specified instructions of the manufacturer.
The grounding lug should be made of stainless steel or tin plated
metals such as aluminum to avoid corrosion.
The grounding lug should be attached to the frame grounding hole
using a stainless steel screw, toothed lock washer or KEPS nut (in
order to penetrate the anodized layer) and backing nut. Care should
be taken to avoid the use of grounding hardware of dissimilar metals,
which may lead to corrosion.
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Dimensions shown are in inches.
0.177” (+0.008/-0)
±0.08
0.79”
0.47”
±0.08
5 GROUNDING
