Fronius IG 2000 Operating Instructions Manual page 17

Fully automa- The FRONIUS IG is fully automatic. Starting at sunrise, as soon as
tic operation the solar modules generate enough power, the automatic control unit
management starts monitoring voltage and frequency. As soon as there is a suffi-
cient level of insolation, your solar inverter starts feeding energy to
the grid. A few Watts of solar power output are sufficient to achieve
this.
The control system of the FRONIUS IG unit ensures that the maxi-
mum possible power output is drawn from the solar modules at all
times.
This function is called MPPT (Maximum Power Point Tracking). It
operates with extremely high precision. As dusk starts and there is
no longer sufficient energy available to feed power into the grid, the
FRONIUS IG unit shuts down the grid connection completely and
stops operating. All settings and data recorded are saved.
Voltage trans-
The FRONIUS IG has been designed for use with solar modules of a
formation
wide range of input voltages. This allows the use of the greatest
and galvanic
variety of types of solar modules. Important notice: the parameters
isolation
indicated for maximum DC voltage (total voltage of the solar modules
connected) must at no time be exceeded!
By its design and operation, the FRONIUS IG offers maximum safety
during installation as well as in operation.
The FRONIUS IG is equipped with an HF-transformer (HF = high
frequency) that ensures galvanic isolation between the DC side and
the grid. In addition, the HF principle results in a drastic reduction of
the transformer's size, which means that it requires less space and
has considerably less weight. The FRONIUS IG unit achieves a high
degree of efficiency due to its innovative circuit schemes.
Monitoring The FRONIUS IG unit monitors the grid. This responsibility compri-
the grid ses all measures necessary for the protection of persons and machi-
nes in case of a power blackout or other grid loss.
The FRONIUS IG unit is programmed to stop operation immediately
and stop supplying power whenever conditions in the grid deviate
from standard conditions (for example, when power is switched off or
in case of any other kind of interruption).
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