8 Maintenance
Prerequisites
● Wear insulated gloves and use insulated tools to prevent electric shocks or
short circuits.
● Before performing maintenance, power o the equipment, follow the
instructions on the delayed discharge label, and wait for a period of time as
specied to ensure that the equipment is not energized.
8.1 System Power-O
Precautions
● 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.
● Before maintaining the optimizers and PV strings, power o the system by
performing the following steps. Otherwise, the PV strings may be energized,
resulting in electric shocks.
SUN2000-(8KTL-20KTL)-M2
User Manual 8 Maintenance
Issue 11 (2023-02-07) Copyright © Huawei Technologies Co., Ltd. 92
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