Page 19 - dehn-surge-protection-PV

HVI conductor: Patented solution that allows to DEHN UNI earthing clamp: Universal connection
®
maintain the separation distance
Due to their exposed location, photovoltaic systems are National and international installation guidelines require
particularly at risk. They must be protected in case of a light- earthing and lightning equipotential bonding and recom-
ning strike while ensuring that the separation distance is mend the following for the connection of the module
maintained to prevent lightning currents from being injected frame:
into the structure. This can be implemented by isolated air-
termination systems in conjunction with the high-voltage- • Connection with 6 or 16 mm Cu at the frame*
2
resistant HVI conductor. • Connection of the equipotential bonding conductor to
the main earthing busbar of the building at ground level
The patented HVI conductor developed by DEHN protects
photovoltaic systems. The basic concept of the HVI conduc- DEHN UNI earthing clamps with integrated corrosion protec-
tor is to enclose the lightning current carrying conductor by tion are ideally suited for integrating mounting systems into
an insulating material so that the separation distance from lightning equipotential bonding and for functional earthing.
conductive parts of the building structure and electric lines The stainless steel contact plate allows to connect different
is maintained. conductor materials (copper, aluminium, steel and stainless
steel) to common mounting systems that are, for example,
made of aluminium. The clamp allows easy and fast con-
sealing end range nection of the profiles and ensures permanent and reliable
electrical contact.
injection of
lightning current
inner conductor
connection to the high-voltage- semicon- connection to the
air-termination resistant insulation ducting equipotential
system sheath bonding structure

2
* without external lightning protection: min. 6 mm CU conductor
separation distance ok: min. 6 mm CU conductor
2
2
separation distance not ok: min. 16 mm CU conductor
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