SMA Solar Technology AG 7 Commissioning
Installation Manual SI80H-60H-OffGrid-IA-en-11 119
7.24.6 Testing the Frequency Shift Power Control
Requirements:
☐ All AC loads must be switched off.
☐ The miniature circuit-breakers for the external energy source must be switched off.
☐ The off-grid inverter must be in operation (see Section 7.24.2"Starting the Off-Grid
System",page116).
☐ The PV inverters or the wind power inverters must be feeding current into the stand-alone grid.
1. Switch to installer mode (see Section 7.5).
2. Select the 120.06 TotBatCur parameter and note the value. You will then know the present
battery charging current.
3. Select the limit for the charging current of the battery, 222.01 BatChrgCurMax, and note the
value. You can then undo the following changes.
4. Set the limit for the charging current of the battery, 222.01 BatChrgCurMax to a current that
is significantly lower than the charging current of the battery 120.06 TotBatCur.
5. Check whether the stand-alone grid frequency, 112.05 InvFrq, is 1 Hz to 2 Hz higher than the
rated frequency of the stand-alone grid.
If the stand-alone grid frequency increases by less than 1 Hz, not all PV inverters and wind
power inverters are configured for stand-alone grid operation. Set the PV inverters and wind
power inverters to stand-alone grid operation (see the manuals of the PV inverters and wind
power inverters).
6. Select the 222.01 BatChrgCurMax parameter and set it to the limit noted in step 3.
7.25 Charging the Battery
1. Ensure that the wiring has been checked (see Section 7.2).
2. Ensure that the functional test has been carried out (see Section 7.24).
3. Connect or close the miniature circuit-breakers and fuse-switch-disconnectors for energy
sources.
4. Disconnect or open all loads, the miniature circuit-breakers of the loads and the fuse-switch-
disconnectors. As a result, only the energy sources will be connected to the off-grid inverter.
5. Start the off-grid system (see Section 7.24.2).
☑ The off-grid inverter starts charging the battery automatically.
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