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INSTaLLaTIoN aND oPeraTIoN MaNUaL SoLar MoDULeS GeNeraTIoN 3 (G3) – HaNwHa Q CeLLS GMBH – Na
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INSTaLLaTIoN aND oPeraTIoN MaNUaL SoLar MoDULeS GeNeraTIoN 3 (G3) – HaNwHa Q CeLLS GMBH – Na
6
FaULTS aND DeFeCTS
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 appropriate 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.
5 GroUNDING
DANGER!
Risk of fatal injury due to electric shock!
Ä
Do not attempt to fix any problems yourself (e.g., glass cracks,
damaged cables).
Ä
Please contact an installer or Q CELLS Technical Customer
Service Department.
Ä
Do not disconnect modules yourself.
Ä
Please commission a trade specialist.
Ä
Dispose of modules in accordance with the local disposal
regulations.
7 DISPoSaL
Q CELLS solar modules are known for a long operating
life and minimal maintenance effort and expense. Dirt
and grime are usually washed away by rain. If the module
is fully or partially shaded by dirt or debris (e.g., plants,
bird droppings), it needs to be cleaned to prevent a loss
of performance.
Maintenance
Ä
The system should be inspected by an installer annually
to check the following:
•
all system components sit securely and are corrosion
free.
•
the connection is secure and all electrical components
are clean and undamaged.
transfer resistances of the grounding
Cleaning
WARNING!
Risk of injury due to hot and
live modules!
Ä
Only clean modules that have cooled down.
Ä
Do not carry or wear any electrically conductive
parts.
WARNING!
Risk of falling due to unsecured
access!
Ä
Never access the installation area alone or without
taking adequate security precautions.
Ä
Please commission a trade specialist.
Clean the modules as follows:
NOTE!
Module surface damage may occur!
Ä
Remove snow and ice without force (e.g. with a very
soft broom)
Ä
Do not scratch off dirt.
Ä
Rinse dirt off with lukewarm water (dust, leaves, etc.)
Ä
Use a soft cellulose cloth (kitchen roll) or sponge to
carefully wipe off stubborn dirt. Do not use micro fleece
wool or cotton cloths.
Ä
Use an alcohol based glass cleaner. Do not use abrasive
detergents or tensides.
Isopropyl alcohol (IPA) can be used selectively to remove
stubborn dirt and stains within one hour after emergence.
Ä
Please follow the safety guidelines provided by the IPA
manufacturer.
Ä
Do not let IPA run down between the module and the
frame or into the module edges.
Ä
Free the substructure from any dirt and debris
(leaves, bird nests, etc.).
Ä
Remove dirt with lukewarm water, a broom, or a
soft cloth.
Ä
Do not use tensides, scrapers, or any high-pressure
water cleaning equipment.
NOTE
! Module damage may occur!
Ä
Do not clean modules with water if there is a risk
of frost.
0°
8
eLeCTrICaL CoNNeCTIoN
option B: Integrated grounding methods
The Q CELLS modules can be bonded with the racking system
using UL1703 or UL2703 certified integrated grounding methods.
The racking system will then have to be grounded so that the
overall system is properly grounded. The listed racking system
and grounding device should be installed in accordance with the
manufacturers’ instructions.
An example of such integrated grounding method is the use of a
washer recognized as meeting UL2703 requirements between the
module and the racking system, when mounting the module. For
example, WEEB washers are generally compatible with Q CELLS
modules, however each combination module / racking system
requires a specific WEEB washer size. Note that WEEB washers
are intended for single use only; they must not be reused after
removal or loosening. Refer to Wiley’s installation instructions for
the specific use of WEEB washers.
•
Dimensions shown are in inches.
0.80”
±0.02
+0
±0.04
0.59”
0.18 - 0.008
0.39”
±0.04
PV Laminate
Backing Nut (Stainless Steel)
Toothed Lock Washer (Stainless Steel
or tin-plated metal)
Grounding Lug (Stainless Steel)
Equipment
Grounding
Conductor
Aluminum
Frame
Screw (Stainless Steel)
