SMA Solar Technology AG
PV Inverters in the Stand-Alone Grid System
Technical Description
SI5048-TEN093630
135
After you have set the PV inverter to stand-alone grid operation, the following PV inverter parameters
change automatically:
17.2 Use of SB 3000TL / 4000TL / 5000TL in 60 Hz Grids
The SB 3000TL / 4000TL / SB 5000TL do not perform an automatic grid frequency detection.
Switching the parameters to off-grid with the help of the rotary code switch does not change the
frequency. The PV inverters continue to function with a frequency of 50 Hz.
If you want to use the PV inverters in a 60 Hz grid, you must carry out the change from 50 Hz to 60
Hz manually. You can carry out the change via communications or software:
1. Set the parameter "FrqCtl.hLim" or "Frequency monitoring lower maximum threshold" to "65".
2. Set the parameter "FrqCtl.Max" or "Frequency monitoring upper maximum threshold" to "65".
3. Set the parameter "FrqCtl.lLim" or "Frequency monitoring upper minimum threshold" to "55".
4. Set the parameter "FrqCtl.Lim" or "Frequency monitoring lower minimum threshold" to "55".
☑ The PV inverter is set to a 60 Hz grid.
No. Parameters
Unit
displayed value
1
I-NiTest
mA
Off (MSD = 0)
2
Uac-Min
G
180
3
Uac-Max
G
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
)
6
dFac-Max
Maximal 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 base
frequency f
0
)
8
Fac-Limit delta
Frequency increase in relation to f
0
, at which point the
power adjustment via frequency ends. The PV inverter
power is 0 W.
Hz
2 (starting from base
frequency f
0
)
Summary of Contents for SI 5048
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