Huawei Backup Box-B1 - Supported Grid Types

2
Appearance
(1) Front panel
(2) Lock
(3) Hanging kit
(4) Off
-grid load port (BACKUP LOAD)
(5) Grid AC port (GRID)
(6) Inverter AC port (INVERTER AC)
(7) COM port (COM)
(8) Ventilation valve
(9) Ground point
Supported Grid Types
The Backup Box supports the following grid types: TN-S, TN-C-S and TT. When the inverter is in
three-phase, three-wire mode, the Backup Box does not support off-grid operation.