104
Parameter Default value
Range
Frequency Shift Power
Control
OFF ON / OFF
Frequency Shift Test
OFF ON / OFF
Set Test Frequency
50.00 Hz 50.00 ~ 55.00 Hz
If PV inverters are connected on the AC side during battery-backup operation, the hybrid in-
verter must be able to limit their output power. This limitation becomes necessary when, for
example, the hybrid inverter's battery is fully charged and the power available from the PV
system exceeds the power requirement of the connected loads.
To prevent excess energy from overcharging the battery, the hybrid inverter automatically
detects the problem and changes the frequency at the AC output. This frequency adjustment
is analyzed by the PV inverter. As soon as the power frequency of the battery-backup grid in-
creases beyond the value specified in Set Test Frequency, the PV inverter limits its output
power accordingly.
Before retrofitting the existing PV system to an off-grid port, the Frequency Shift Power
Control parameter needs to be enabled. It must be ensured that the connected PV inverters
limit their power at the AC output via the hybrid inverter due to changes in frequency. The
frequency-dependent active power limitation PF must be set in the PV inverter.
When the battery SOC is greater than 85%, the Hybrid inverter will standby before
starting when switching off-grid, and does not support seamless switching.
8.10.16 Import Power Limit
1. To avoid damage to the inverter due to excessive power import from the grid, set the “Im-
port Power Limit” for the inverter immediately after completing the wiring.
2. This parameter can only be set by an Installer account.
Tap More→Settings→Operation Parameters→Other Parameters to enter the corre-
sponding screen.
8 iSolarCloud App User Manual
To Next Page
Loading...
Need help?
General
