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Operation manual
The FRONIUS IG Unit in the PV System
The FRONIUS IG is the latest generation of solar inverter. It is the
General infor-
mation
highly complex link between solar modules and the grid.
As such it is responsible for a number of high-level tasks. The follo-
wing diagram gives a graphical overview as to where the FRONIUS
IG is placed in the PV system.
Converting
The FRONIUS IG unit transforms the direct current generated by the
solar modules into alternating current. This alternating current is fed
DC into AC
current
into your home system or into the public grid and synchronized with
the voltage that is used there. The FRONIUS IG has been designed
exclusively for use in grid connected photovoltaic systems. It cannot
generate electric power independent from the grid.
FRONIUS IG
PV array
8
Main AC
Energy-
Load
meter
Center
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