● Before turning on the AC switch between the SUN2000 and the power grid, use
a multimeter set to the AC position to check that the AC voltage is within the
specied range.
● Do not turn the DC switch to the unloaded position .
● When the system is powered on or running, do not place obstacles (such as
cables) to block the rotation of the handle or manually hold the handle.
Otherwise, the DC switch cannot be automatically disconnected.
● If the solar inverter has been stored for more than two years, it must be
checked and tested by professionals before being put into use.
Procedure
Step 1 Turn on the AC switch between the SUN2000 and the power grid.
If you perform Step 2 before Step 1, the SUN2000 reports a fault about abnormal
shutdown. You can start the SUN2000 only after the fault is automatically
rectied.
Step 2 Set DC SWITCH 1 (MAIN SWITCH) at the bottom of the solar inverter chassis to
ON. When you hear a click, the switch is ON.
Step 3 Check the status of the PV connection indicator. If it is steady green, set DC
SWITCH 2 and DC SWITCH 3 to ON.
Step 4 Observe the LED indicators to check the SUN2000 operating status.
Step 5 Perform quick settings on the SUN2000 app. For details, see 7.1 Operations with
the SUN2000 App.
----End
SUN2000-(100KTL, 110KTL, 115KTL)-M2
User Manual 6 Commissioning
Issue 02 (2022-06-30) Copyright © Huawei Technologies Co., Ltd. 62
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