Fronius Primo GEN24 3.0, Operating Instructions Manual

Page: 119 / 192

" Limit for entire system "
The entire PV system is limited in accordance with a set power limit. The value of
the permissible total feed-in power must be set.
"Total DC system power"
Input field for the total DC system power in Wp.
This value is used if the "Maximum permitted feed-in power of the entire system"
is specified in %.
" Hard Limit "
If this value is exceeded, the inverter switches off within max. 5 seconds. This
value must be higher than the value set for "Soft Limit".
" Soft Limit "
If this value is exceeded, the inverter will regulate down to the set value within
the time required by national standards and regulations.
"Maximum permitted feed-in power of the entire system"
Input field for the "Maximum permitted feed-in power of the entire system" in W
or % (setting range: -10 to 100%).
If there is no meter in the system or if a meter has failed, the inverter limits the
feed-in power to the set value.
Example: Feed-in limitation
(without consideration of the efficiency)
PV system on Fronius inverter: 5000 W
Consumption in home: 1000 W
Maximum permitted feed-in power of the entire system: 60% = 3000 W
Case 1: The battery can be charged
Power at grid feed-in point: 0 W
Power at inverter output: 1000 W
Power into the battery: 3000 W
Case 2: The battery cannot be charged
Power at grid feed-in point 3000 W
Power at inverter output: 4000 W
Power into the battery: 0 W
In this example, no more than 3000 W may be fed into the grid at the grid
feed-in point. However, any loads that are located between the inverter and the
grid feed-in point can be supplied by additional power from the inverter. These
loads are also compensated as required.
Dynamic power
regulation with
several inverters Example 1: Fronius SnapINverter ≤ Fronius Primo GEN24
Only one primary meter is required for the Fronius Primo GEN24 inverter.
The power values shown are an example. Inverter configurations with power val-
ues other than those shown in the example are possible, taking into account the
criteria for this example.
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EN