Figure 8-1 Install screws for locking DC switches
----End
8.2 Power-O for Troubleshooting
Context
To prevent personal injury and equipment damage, perform the following
procedure to power o the solar inverter for troubleshooting or replacement.
● When a solar inverter is faulty, try to avoid standing in front of the solar
inverter.
● Do not operate the DC switch on the solar inverter before you nish Step 3 to
Step 5.
● If the AC switch between the solar inverter and the power grid has
automatically disconnected, do not turn on the switch before the fault is
rectied.
● Before power-o for troubleshooting, do not touch the energized components
of the solar inverter. Otherwise, electric shocks or arcing may occur.
Procedure
Step 1 Wear proper personal protective equipment (PPE).
Step 2 If the solar inverter is not shut down due to a fault, send a shutdown command
on the SUN2000 app, SmartLogger, or management system. If the solar inverter
has shut down due to a fault, go to the next step.
Step 3 Turn
o the AC switch between the solar inverter and the power grid.
SUN2000-(100KTL, 110KTL, 125KTL) Series
User Manual 8 Maintenance
Issue 07 (2020-09-15) Copyright © Huawei Technologies Co., Ltd. 105
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