Installation Manual
Last revised: January 2011
The technical specifications are subject to change without notice
page 6
5.
Electrical connection
Only specially trained and qualified personnel may make the electrical connection!
The maximum system voltage of solar modules connected with each other may not exceed
1000VDC! When designing the system, please note that the module voltage increases when the
temperatures are low.
Only connect solar modules of the same type and power category with each other.
For the electrical connection, the solar modules are equipped with a junction box and solar
cables with plugs.
The plugs are marked with the respective polarity. Ensure that the polarity is correct and that
the connections are secure and tight.
Never connect or disconnect electrical contacts when under load!
Always use special solar cables with a diameter of at least 4 mm² for further wiring.
We recommend securing the cables to the mounting system, using UV-resistant cable ties, to
avoid the pin and socket connections being at a water-settlement level.
The junction-boxes are equipped with 3 bypass-diodes. In the event of clouding, these
minimize the losses and help to prevent damage to the solar modules.
When connecting the solar modules to an inverter, please observe the information provided
by the manufacturer of the inverter.
6.
Grounding
The company installing the solar module frame is also responsible for proper grounding.
If the building is already equipped with an exterior lightning protection system, the PV-
installation must be integrated in the protection system against direct effects of lightning.
Country specific standards must be adhered to.
Attach a separate conductor as grounding wire to one of the 4mm diameter grounding holes on
the module frame with a set of M4 bolt, cup washer, flat washer, tooth washer and M4 nut.
This is to ensure positive electrical contact with the frame.
For the position of the grounding holes, please refer to the technical drawing in paragraph 4.3.
Ensure that the anodized layer of the frame is penetrated and a secure electrical contact is
created with the frame.
Drawing
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