22
If excessively long AC or DC cables are laid
in loops in the connection area, fix the cab-
les to the designated eyelets at the top and
bottom of the connection block using cable
ties.
Maximum AC
Fuse Protection
Additional exter-
nal AC and/or DC
disconnect
Depending on the installation, an additional external AC and/or DC disconnect may be re-
quired if the inverter is installed in a location not easily accessible to utility or fire personnel.
Contact your local authorities for additional information.
Inverter Phases AC power Maximum fuse protection
Fronius Symo 10.0-3-M 3 10,000 W C 80 A
Fronius Symo 12.0-3-M 3 12,000 W C 80 A
Fronius Symo 12.5-3-M 3 12,500 W C 80 A
Fronius Symo 15.0-3-M 3 15,000 W C 80 A
Fronius Symo 17.5-3-M 3 17,500 W C 80 A
Fronius Symo 20.0-3-M 3 20,000 W C 80 A
NOTE! A residual current circuit breaker for the AC connecting cable may be re-
quired depending on local regulations, the power supply company, and other con-
ditions. A type A residual current circuit breaker with a trip current of at least
100 mA is generally sufficient in this case. However, false alarms can be triggered
for the residual current circuit breaker type A in individual cases and depending
on local conditions. For this reason, Fronius recommends that you use a residual
current circuit breaker suitable for frequency converters.
max. 80 A
AC ~
RCD
National Standards
?
Type A
YES
I
ΔN
≥ 100 mA
§
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