Huawei LUNA2000 - Setting the Grid-Tied and Off-Grid ESS Mode

Figure 3-9 Inverter (with batteries) + inverter (with batteries) (dashed boxes
indicate optional components)
NO TE
The parameters of each battery need to be set separately. When the grid charging function
is enabled, the surplus power generated by one inverter can be used to charge the other
inverter.
WARNING
In the o-grid state, the output phases of cascaded inverters are dierent. The
primary loads of the Backup Box connected to the inverters cannot be connected
in parallel. The primary loads must be connected to
dierent buses.
3.2.2 Setting the Grid-tied and O-grid ESS Mode
The grid-tied and o-grid ESS switches the inverter to the grid connection status
through the Backup Box. When the grid fails, the ESS supplies power to primary
loads in backup mode. When the grid recovers, the ESS automatically switches
back to the grid-tied mode.
LUNA2000-(5-30)-S0
User Manual 3 Application Scenarios and Settings
Issue 01 (2020-10-20) Copyright © Huawei Technologies Co., Ltd. 31