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INSTALLATION AND OPERATION MANUAL SOLAR MODULES Q.PEAK DUO XL-G11.3_G11.7 – Q CELLS
INSTALLATION AND OPERATION MANUAL SOLAR MODULES Q.PEAK DUO XL-G11.3_G11.7 – Q CELLS
2 PLANNING
2.3 MOUNTING OPTIONS
Specifications
MODULE TYPE
MOUNTING
OPTION
POSITION OF
CLAMPS* [MM]
TEST LOAD
PUSH / PULL** [PA]
DESIGN LOAD
PUSH / PULL** [PA]
SAFETY
FACTOR
Q.PEAK DUO XL-G11.3
Q.PEAK DUO XL-G11.7
FB1
508
5400 / 2400
3600 / 1600
1.5
CL1a
400 - 550
*
**
Distance between outer edge of module and middle of the clamp (see table „2.3 Mounting Options“ on page 7); consider further details below.
Loads according to IEC 61215-2:2016.
Module Selection
For detailed key electrical data, please refer to the actual data sheet
referring to the relevant Module (available at www.q-cells.com).
Ä
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
Ä
Please follow the valid national guidelines for the installation
of electrical systems.
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.
Ä
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.
Ä
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).
Ä
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 maximum
of two module strings may be operated in parallel on a single
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.
2 PLANNING
2.4 ELECTRICAL LAYOUT
MOIUNTING OPTIONS
REQUIREMENTS
All
Ä
The loads in the table are related to the mechanical stability of the solar modules. The
mechanical stability of the mounting system including clamps has to be evaluated by the system
supplier. The listed test load values have been determined with the following clamp parameters:
clamp width = 40 mm and clamp depth = 10 mm.
Ä
The system installer is responsible for the determination of location-specific load requi-
rements.
Ä
Ensure that the connection cables of the junction box do not run between laminate and
mounting rails.
Ä
Modules bend under load. Therefore, sharp objects (e.g. screws, ballast stones, rail ends, rails
with burrs or sharp corners) must not be placed near the module backside so as not to touch the
laminate under load.
Ä
Ensure that the junction boxes do not touch the mounting structure (e.g. shorts rails, ballast, etc.)
or the rooftop under load. Clamps or insertion profiles etc. must not touch the glass (even under
load).
Ä
Unbalanced loads (e.g. snow overhangs, snowdrifts) which result in locally significantly
increased loads must be removed or avoided by technical measures.
Ä
A minimum support depth of 15 mm is required on the back side of the module.
Ä
Ensure that module frame is fixed directly on the rail of the substructure (no spacer allowed
between the module and substructure).
FB1
Ä
Use M8 corrosion-proof screws and washers (diameter ≥ 15.8 mm) for mounting slots (Detail A,
Fig.1). Mounting screws and washers should have the same material properties.
