Huawei SUN2000 MB0 Series - System Maintenance; System Power-Off

7 System Maintenance
D ANGER
● Wear personal protective equipment and use dedicated insulated tools to avoid
electric shocks or short circuits.
WARNING
● Before performing maintenance, power o the equipment, follow the
instructions on the delayed discharge label, and wait for a period of time as
specied to ensure that the equipment is not energized.
7.1 System Power-O
Precautions
WARNING
● After the system is powered o, the inverter is still energized and hot, which
may cause electric shocks or burns. Therefore, wait for 5 minutes after power-
o
and then put on insulated gloves to operate the inverter.
● Power o the system before maintaining optimizers and PV strings. Otherwise,
electric shocks may occur when the PV strings are energized.
Procedure
Step 1 Send a shutdown command on the app.
Step 2 Turn o the AC switch between the inverter and the power grid.
Step 3 Set the DC SWITCH to OFF.
SUN2000-(12K-25K)-MB0 Series
User Manual 7 System Maintenance
Issue 01 (2023-04-30) Copyright © Huawei Digital Power Technologies Co., Ltd. 86