Brochure/Catalogue

C
C.52 2028840000
Lightning and surge protection for low voltage supply
Lightning and surge protection for photovoltaic systems on the DC side
DC surge protection for photovoltaic facilities
For the DC voltage side, Weidmüller offers complete
protection with a comprehensive range of surge arresters.
For cable lengths of more than 10 m between the PV
generator and the inverter, protection is needed at both
ends. This means that both the generators and the inverter
are protected.
External lightning protection available
And the separation distances are observedn (Type II)
External lightning protection not available
(Type II)
VPU II 3/R 1.000 V DC PV
Ready-made standard solutions
Weidmüller offers an extensive range of combiner boxes with overvoltage
protection for the DC side. It comprises solutions pre-wired for 1 to 16 string
applications in various versions.
Our Photovoltaic Catalogue (order number 1344440000) contains a
complete list of our standard solutions.
Failure to comply with the separation distance S
If the separation distance S according to EN 62305 is not observed (S < min), then partial lightning currents need to be taken into account. A shielded
generator main line with sufcient cross-sectional area (min. 16 mm²) should be used. The adjacent picture shows an implementation that reaches LPZ 1.
Here the surge protection from the Class II arrester can be installed in line with the existing standards (product selection, see above).
Another alternative is type I lightning and surge protection, especially for plants where the separation distance cannot be observed, e.g. installation on
tin roofs.
AC
DC