PV Inverters in Stand-alone Grid Systems SMA Solar Technology AG
142 SI5048-TB-TEN110340 Technical Description
After you have set the PV inverter to stand-alone operation, the following PV inverter parameters
automatically change:
No. Parameters Unit Value
1 I-NiTest mA Off (MSD = 0)
2 Vac-Min V 180
3 Vac-Max V 260
4 Fac-delta–
Lower range in which the PV inverter is active relative
to f
0
Hz − 4.5 (starting from base
frequency f
0
)
5 Fac-max+
Upper range in which the PV inverter is active relative
to f
0
Hz +4.5 (starting from base
frequency f
0
)
6dFac-Max
Maximum rate of change
Hz/s 4
7 Fac-start delta
Frequency increase in relation to f
0
, at which point the
power adjustment via frequency begins
Hz 1 (starting from the base
frequency f
0
)
8 Fac-Limit delta
Frequency rise based on f
0
, where the power control
via frequency ends. The PV inverter power is 0 W.
Hz 2 (starting from the base
frequency f
0
)
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