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2.10
Installing the photovoltaic module
2.10.1 Observing the clamping surface
a clamping length at least 30 mm
> Ensure that the clamping length and depth on the PV
module frame are sufficient.
2.10.2 Attaching the end/middle clamps
> Observe the set-up instructions for the mounting frame
and the end/middle clamps (¬ image 3).
3
Electrical installation
Only qualified electricians may carry out the electrical instal-
lation.
3.1
Preparing the electrical installation
> Calculate the maximum number of photovoltaic modules
connected in series and/or parallel (6, image 2) in
accordance with the maximum permissible system volt-
age and reverse current capacity (¬ page 6), and create
a wiring plan.
Note
i
Under expected operational conditions, a photo-
voltaic module can provide a greater current and/
or a greater voltage than would be stated in the standard-
ised test conditions. Multiply the values of I
on the module by a factor of 1.25 to dimension the compo-
nents provided in the installation.
> Check whether overvoltage and lightning protection is
required and whether there is an overvoltage and light-
ning protection concept that is complies with the relevant
regulations.
> If a generator connection box is integrated into the sys-
tem, check whether string diodes are required.
Cabling the photovoltaic module
> Protect the cable against direct sunlight and high tensile
loading.
> Route the cabling behind the photovoltaic module, if pos-
sible so that it is below the frame.
> If extension cables (8, image 2) are required, use only
suitable cables and observe the instructions for the plug
connectors.
> Position the connector boxes (2, image 1), as shown in
image 9.
0020273012_00
Installation and maintenance instructions
6
b
b clamping depth 3–7 mm
and V
stated
sc
oc
3.2
Carrying out the electrical installation
> Carry out the electrical installation based on the wiring
plans.
> Install suitable overvoltage and lightning protection, if
required or stipulated.
> Install module string/bypass diodes, if required, and the
required overcurrent protection.
3.3
Cabling requirements
– No plasticisers
– UV-resistant
– Performance-related cross-section (³ 4 mm
– Temperature range: - 40 °C...+ 120 °C
– MC4 plug connections (5, image 2)
3.4
Series circuit
> Wire several photovoltaic modules in series; schematic
diagram (¬ image 4).
> Avoid a ring main (¬ image 5).
3.5
Requirements for inverters and earthing
> Observe the installation instructions for the inverter (7,
image 2).
> Check whether local regulations stipulate protective
earthing (9, image 2).
> With the protective earthing, establish a secure electrical
connection between the PV module frame and the earth
potential or the earthed mounting frame.
> If required, install lightning protection in addition to the
protective earthing.
> Never use the PV module frames or their protective
earthing as active components of the lightning protection.
> Use separate arresters for connecting the lightning
arrester to the lightning protective earth.
> Always have competent persons plan and install the out-
door and, if required, indoor lightning protection.
> When directly installing it on the PV module frame, use
suitable materials that do not encourage electrical corro-
sion.
4
Start-up
> Observe the installation instructions for the inverter.
5
Handing over to the operator
> Hand all of the documents over to the end user.
> Inform them how they should respond if faults and dam-
age occur, and about the maintenance and inspection
intervals.
6
Troubleshooting
6.1
Eliminating faults
> Observe the instructions for the inverter.
6.2
Procuring spare parts
The original components of the product were also certified
by the manufacturer as part of the declaration of conformity.
If you use other, non-certified or unauthorised parts during
maintenance or repair work, this may void the conformity of
the product and it will therefore no longer comply with the
applicable standards.
We strongly recommend that you use original spare parts
from the manufacturer as this guarantees fault-free and safe
operation of the product. To receive information about the
available original spare parts, contact the contact address
provided on the reverse of these instructions.
> If you require spare parts for maintenance or repair work,
use only the spare parts that are permitted for the prod-
uct.
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