Fronius Primo GEN24 3.6 Operating Instructions Manual page 109

signals may be attenuated or amplified by the inverter. The settings below can be
used to counteract this if necessary.
Parameter Value range
"Reduction of Off
Influence"
On
"Frequency of 100 ‑ 3000 Hz
Ripple Control
Signal"
"Grid Induct- 0.00001 ‑ 0.00
ance"
5 H
"Measures against RCD/RCMU false trips"
(when using a 30 mA residual current circuit breaker)
NOTE!
The national regulations of the grid operator or other factors may require a re-
sidual current circuit breaker in the AC connection lead.
For this situation, a type A residual-current circuit breaker is generally adequate.
Nevertheless, false alarms can be triggered for the type A residual-current cir-
cuit breaker in individual cases and depending on local conditions. For this reas-
on, in accordance with national legislation, Fronius recommends that a residual-
current circuit breaker with a tripping current of at least 100 mA suitable for fre-
quency converters be used.
Parameter Value range
"Inverter shut- 0
down before
1
30 mA RCD
trips"
"Leakage cur- 0 ‑ 0.25
rent factor to
(default: 0.16)
reduce
RCMU/RCD
false trips"
(only for Symo
GEN24)
"Iso Warning"
Parameter Value range
"Iso Warning" Off
On
Description
The function is deactivated.
The function is activated.
The frequency specified by the energy
company must be entered here.
The value measured at the feed-in point
must be entered here.
Description
No measures to prevent false tripping.
The inverter switches off at 15 mA before
the residual current circuit breaker trips.
Reducing the setting value reduces the
leakage current and raises the intermedi-
ate circuit voltage, which slightly reduces
the efficiency. Setting value 0.16 enables
optimum efficiency.
Description
The isolation warning is deactivated.
The isolation warning is activated.
A warning is issued in the event of an isola-
tion fault.
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