INSTALLATION AND OPERATION MANUAL SOLAR MODULES Q.PEAK DUO XL-G11.X / BFG
INSTALLATION AND OPERATION MANUAL SOLAR MODULES Q.PEAK DUO XL-G11.X / BFG
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2 Planning
2.4 Electrical Layout
Module Selection
For detailed key electrical data, please refer to the actual data
sheet referring to the relevant Module (available at www.qcells.
com).
For maximum energy yields, mismatches of specified electric
current (I
MPP
) of more than 5 % should be avoided for all
modules connected in series.
Safety Factor
During normal operation, a module may generate a greater
current and / or higher voltage than that determined under
standardized test conditions. Accordingly, the values of I
SC
and
V
OC
marked on the module should be multiplied by a facot of 1.25
when determining:
■
the component voltage ratings,
■
conductor ampacities,
■
fuse sizes,
■
size of controls connected to the PV output.
Refer to Section 690-8 of the National Electrical Code for an
additional multiplying factor of 125 percent (80 percent derating)
which might be applicable.
Please follow the valid national guidelines for the installation
of electrical systems (refer to section 690-8 of the NEC for
an additional multiplying factor of 125 percent [80 percent
derating] which may be applicable).
Series Connection
Connection of modules in series is only permitted up to the
maximum system voltage as listed in the applicable data sheet.
Take into account all possible operating situations and all
relevant technical norms and regulations when designing the
system. It has to be ensured that the maximum system voltage,
including all necessary safety margins, is not exceeded.
Take the voltage limit of the inverter into account when
determining the maximum number of modules in the string.
Parallel Connection
Modules may be damaged by the occurrence of reverse currents
(caused by module defects, ground leaks, or defective insulation).
Ensure that the maximum reverse current load capacity
indicated in the data sheet is met.
In order to limit reverse currents that may occur, we recommend
using the following safety options:
1) Layout with a limited number of parallel connected strings :
Without undertaking further current blocking measures, a maxi-
mum of two module strings may be operated in parallel on a sing-
le inverter or MPP tracker.
2) Layout with string fuses :
Use overcurrent devices (e.g. fuses) according to the relevant
standards in each string. Use gPV-fuses according to IEC
60269-6. Observe the maximum permitted number of strings as
indicated in the specifications provided by the respective string
fuse manufacturer and the technical guidelines.
NOTE!
When installing different product versions, the lowest minimum
permitted reverse current load capacity applies.
Inverters
Inverters with or without transformers may be used.
3 Installation
3.1 Safety and Transport
Leave modules in their original packaging until
installation.
Store the modules securely in cool and dry rooms.
The packaging is not weatherproof.
Inspect the packaging for damages.
Contact the transport company regarding any
damage to the packaging and follow their
instructions.
Follow any instructions on the packaging.
Ensure that all personnel are aware of and adhere to
accident-prevention and safety regulations.
While working wear clean gloves.
Danger! Risk of fatal injury due to electric shock!
Do not install damaged modules.
Inform your distributor of any damages immediately.
Warning! Fire Risk!
Do not install modules indoors.
Do not install modules on moving objects.
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