Electricity + Control September 2015

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Setting our sights on the sun
GEWISS has a comprehensive range of
products for photovoltaic systems and has
become a major player in the surprising
growth trend of renewable energies over
the last few years.
Today, photovoltaics is still an investment
choice, not only for ecological reasons, but
also for cutting energy consumption costs.
With government benefits being applied
soon in South Africa, everyone can pro-
duce electricity and this is why photovolta-
ics, unlike other renewable energies, has
evolved not only the industrial sphere but
above all the commercial and residential
sectors, calling for specific products for
the development of plants and systems.
GEWISS has designed solutions to trans-
port the energy produced by photovoltaic
panels until it is put onto the low voltage
grid. The solutions cover both dc and ac
side requirements, meeting the most wide-
ranging needs for system protection, isola-
tion, distribution and trunking.
ACDC Dynamics is the sole distributor of
the Italian designed Gewiss product ranges
in Southern Africa.
Prewired string boards
The string boards have been designed for
installation in photovoltaic systems with a
capacity up to 1 000 Vdc.
Modular dc devices
Compact rotary switch disconnectors (only
3.5 modules) allow for dc side disconnec-
tion.
Ac side protection
GEWISS products for ac side protection can
meet all system requirements in the resi-
dential, commercial and industrial sectors.
Modular sc devices
LST surge protection limiters are suitable
for ac side protection from overvoltage
generated by atmospheric discharges,
for maximum inverter service continuity.
Type B residual current circuit breakers,
for protection from ac side indirect con-
tacts, in situations where inverters without
transformers are installed or the inverter is
constructed to prevent direct current disper-
sion to earth owing to faults.
Empty, compact string or parallel
enclosures
The range comprises 40CD_IP55 type 4 to
36module enclosures, for numerous ac and
dc side board configurations.and medium-
scale photovoltaic systems are common.
Enquiries: Charlton Opperman.
Tel. 010 202 3300 or email
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