INSTALLATION AND OPERATION MANUAL SOLAR MODULES Q.MAXX-G4
INSTALLATION AND OPERATION MANUAL SOLAR MODULES Q.MAXX-G4
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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/au/).
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. Please use a safety factor of 1.25 for the following:
■
Calculating the voltage measurement values (V
OC
) of
components
■
Calculating the current measurement values (I
SC
) of conductors
■
Sizing of control systems connected to the outlets of the solar
modules
Please follow the valid national guidelines for the installation of
electrical systems.
Prefer to the latest revision of AS / NZS 5033 (including
all relevant amendments) and the Clean Energy Council
Guidelines (for Australia).
Series Connection
Connection of modules in series is only permitted up to the
maximum system voltage as listed in the applicable data sheet of
all the relevant modules to be installed.
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 :
Please refer to the latest revision of AS / NZS 5033 (including all
relevant amendments) for parallel string overcurrent protection
requirements.
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.
Warning! Fire Risk!
Do not install modules indoors.
Do not install modules on moving objects.
Ensure that all personnel are aware of and adhere to
accident-prevention and safety regulations.
While working wear clean gloves.
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GB
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I
§
D
Danger! Risk of fatal injury due to electric shock!
Do not install damaged modules.
Inform your distributor of any damages immediately.
