7 Commissioning SMA Solar Technology AG
102 SI80H-60H-OffGrid-IA-en-11 Installation Manual
11. Connect the BatCur+ measuring wire to the BatFuse
L‒ side.
12. Connect the BatCur– measuring wire to the battery
DC‒ side.
13. Close the BatFuse switch-disconnector and switch the off-grid system on.
7.14 Configuring the Limiting Values for the Generator Connection
7.14.1 Changing the Current Limiting Values for the Generator
Significance of the current limit:
The generator management limits the consumption of generator current to the set maximum value.
In three-phase off-grid systems, the generator current is limited for each line conductor individually.
The set value thus applies for each phase.
In off-grid inverters that are operated in parallel, the generator management only limits the total
generator current. The generator current may be unequally distributed between the off-grid inverters.
If an off-grid inverter fails, for example, more current will flow through the remaining off-grid inverters
as a result. Each off-grid inverter limits its own current to the maximum output current at the AC2
terminal.
Extended generator management:
If the set generator current is not sufficient to supply the loads, the generator management requests
additional current from the battery. The off-grid system then supplies the loads with generator current
and battery current.
1. Switch to installer mode (see Section 7.5).
2. Select the 234.03 GnCurNom parameter and set it to the desired value. Tip: A suitable value
for the 234.03 GnCurNom parameter is 80% of the maximum generator current per phase.
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