Huawei SUN2000-75KTL Series - Power-Off for Troubleshooting

For details, see 7 Man-Machine Interactions, or the SmartLogger or NMS user
manual.
Step 2 Turn o the AC switch between the SUN2000 and the power grid.
Step 3 Set all DC switches to OFF.
Step 4 (Optional) Install screws for locking DC switches.
NO TE
For the model used in Australia, perform this step to meet the local standards
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.
CA UTION
● When a solar inverter is faulty, try to avoid standing in front of the solar
inverter.
● If the LED1 indicator of the inverter is
o, the switches are in the OFF position,
do not operate the DC switches of the inverter. In this case, go to Step 4.
● Do not operate the DC switch on the solar inverter before you
nish Step 3 to
Step 5.
● The DC switch can be automatically disconnected when an internal fault is
detected in an inverter. Do not turn on the switch before the fault is cleared.
● 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
rectied.
● Before power-o for troubleshooting, do not touch the energized components
of the solar inverter. Otherwise, electric shocks or arcing may occur.
SUN2000-(75KTL, 100KTL, 110KTL, 125KTL) Series
User Manual 8 Maintenance
Issue 15 (2023-01-31) Copyright © Huawei Technologies Co., Ltd. 114