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Depending on the grid operator and
the feed point, a three-phase meter or a
single-phase meter must be used.
Some grid operators require the use of a
reverse-current-capable meter.
A basic distinction is made between two
different connection options of the solar
inverter to the public power grid:
· 3-phase AC grid
(e.g. Germany)
· 1-phase AC grid (e.g. Italy, Spain)
CAUTION
Observe the regional regulations for the
grid connection.
In Germany the grid connection must
always be 3-phase!
The solar inverter always only feeds via
AC terminal 2. If several solar inverters
are operated in parallel in a 3-phase grid,
AC terminal 2 of the unit must be distrib
-
uted uniformly among the grid phases
L1, L2 and L3 to avoid unequal loading.
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