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Preface
Thank you for choosing an inverter from Donauer Solartechnik Vertriebs GmbH. By using solar en-
ergy, you make a significant contribution to environmental protection. It reduces the total amount
of atmospheric pollution caused by carbon dioxide (CO2) and other damaging gases.
Highest efficiency with longer service life
The innovative inverter topology, based on a single-stage, transformerless switching concept,
has been integrated for the first time in the High Efficiency 3.0 and High Efficiency 3.6 to achieve
the highest possible levels of efficiency. Peak efficiencies of 98.6 % are achieved by the High Ef-
ficiency 3.0 and 3.6. Even according to the stringent EU standards, the devices achieve efficiencies
above 98 %. With these figures, the High Efficiency 3.0 and High Efficiency 3.6 have set new stand-
ards in photovoltaic grid-feed systems.
A new and unique cooling concept inside the inverter ensures an even distribution of heat and a
long service life.
Designer casing and easy installation
For the first time, the very high efficiency allows the use of a designer casing made of plastic. This
offers many advantages. The overall surface temperature of the High Efficiency 3.0 and 3.6 remains
very low. This also offers great installation advantages.
The lightweight High Efficiency 3.0 and 3.6 weigh only 9 kg and can be easily and safely mounted
on a wall. The supplied wall bracket and practical recessed grips for right and left handed installers
make mounting of the device simple and convenient. All connections and the DC circuit breaker are
externally accessible.
Visualisation tools and accessories
The High Efficiency 3.0 and High Efficiency 3.6 have a graphical display for visualising the energy
yield values, current performance and operating parameters of the system. Its innovative menu al-
lows individual selection of the various measurements.
See www.donauer.eu for further information about accessories. Your installer can, of course, also
give you more information about the options and accessories that are available.
Summary of Contents for High Efficiency 3.0
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