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Surge protection for
roof-mounted systems
Roof-mounted systems are widely used. Due to their expo-
sed location, roof-mounted systems are particularly prone
to direct and indirect lightning strikes. Since the PV system
is directly connected to the electrical installation of the
building, lightning effects may have serious consequences
for the building and persons inside. The IEC/EN 62305-2
standard also has to be used for analysing the risk of roof-
mounted systems.
When installing a PV system, a distinction is made between
buildings with and without external lightning protection.
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