General
Device concept Device design:
(1) Housing cover
(2) Inverter
(3) Wall bracket
(4) Connection area incl. DC main
switch
(5) Data communication area
(6) Data communication cover
The inverter transforms the direct cur-
rent generated by the solar modules
into alternating current. This alternat-
ing current is fed into the public grid
synchronously with the grid voltage.
The inverter has been developed exclusively for use in grid-connected photovol-
taic systems; it is impossible to generate energy independently of the public grid.
Thanks to its design and the way it works, the inverter is extremely safe both to
install and to operate.
The inverter automatically monitors the public grid. Whenever conditions in the
electric grid are inconsistent with standard conditions (for example, grid switch-
off, interruption, etc.), the inverter will immediately stop producing power and in-
terrupt the supply of power into the grid.
The grid is monitored by monitoring the voltage, frequency and islanding condi-
tions.
The inverter operates fully automatically. As soon after sunrise as there is suffi-
cient energy available from the solar modules, the inverter starts monitoring the
grid. When insolation has reached a sufficient level, the inverter starts feeding
energy into the grid.
The inverter operates in such a way that the maximum possible amount of power
is obtained from the solar modules.
As soon as the power available has fallen below the level at which energy can be
fed into the grid, the inverter disconnects the power electronics completely from
the grid and stops running. It retains all its settings and stored data.
If the inverter becomes too hot, it automatically reduces the current output
power in order to protect itself.
Reasons for the inverter becoming too hot include the ambient temperature be-
ing too high or inadequate heat dissipation (e.g. if it is installed in a switch cabinet
without suitable heat dissipation).
Proper use/
intended pur-
pose
The inverter is intended exclusively to convert direct current from solar modules
into alternating current and to feed this into the public grid.
Utilisation not in accordance with the intended purpose comprises:
-
Any use above and beyond this purpose
-
Making any modifications to the inverter that have not been expressly ap-
proved by Fronius
-
the installation of components that are not distributed or expressly ap-
proved by Fronius.
15
EN
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