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KIOTO_Installation_manual_2021 © KIOTO Photovoltaics GmbH, Solarstraße 1, 9300 Sankt Veit/Glan - Österreich 06/2021
Laying of the solar cables
Keep the length of cable connections as short as possible, to optimize the energy yield and
minimize sources of errors. Consider this point while planning and sizing the generator.
Fix loose solar cables after mounting to avoid damaging. Use only adequate fixing material
(conduits in the mounting profiles or UV
–resistant plastic tubes).
Take care while handling the cables to avoid damaging, especially at low temperatures.
The cables should not be bent or folded in an extreme way. Where possible use flexible cables.
Please follow supplier instructions.
Use conduits for laying and fixing of the cables.
To avoid voltages from indirect lightning strikes, lay the feed line and return line very close to each
other.
Always consider the polarity.
The cables must not lie between the mounting profiles and module backside to avoid damaging the
module, especially under heavy mechanical load.
Electrical connection
The modules must be covered with a light resistant material during the complete mounting process.
Avoid damaging the module and those cables.
Execute the system grounding according to national and international standards.
Sizing of inverters should be done upfront. The installation has to be done by qualified persons to
ensure an optimized energy yield.
For safety reasons and to minimize maintenance works, a DC disconnector should be installed
between the generator and the inverter. This could also be obligatory by law.
Connection of the module to a grounding system
The photovoltaic modules can be grounded as follows:
Modul series
Possibility to connect the grounding to the frame
Power-60
Power-MAXIM
On the bottom side of the module frame, in the area of the plastic
corner connector
- Earthing sign on the corner connector
Power-ALPIN
Glas-60 framed
Project-60
Project-60 halfcut
On the bottom side of the module frame
- Earthing sign on the frame
The adequately sized grounding cable must be connected with a stainless steel (A2) ISO 7981
screw (3,9x 6,5mm) with a form C rounded head with two fan shaped washers (on the outside and
inside of the eyelet). The assembly from the outside to the inside should be: screw head
– fan
shaped washer
– eyelet – fan shaped washer – frame.
For the professional grounding of the complete photovoltaic system the installer is responsible. If a
grounding system is already in use at the affected building, the photovoltaic generator has to be
integrated in this protection system against direct lightning strikes. National standards have to be
considered and executed.
The modules must be earthed through the provided holes on the frame of the module or in a proper
manner through other electrically conductive materials, such as the supporting structure. This may
only be performed by a qualified specialist.