No. Check Item Acceptance Criteria
8 Unused terminals and ports Unused terminals and ports are locked
by watertight caps.
9 Installation environment The installation space is proper, and
the installation environment is clean
and tidy, without foreign matter.
6.2 Powering On the System
Precautions
● Before the equipment is put into operation for the rst time, ensure that the
parameters are set correctly by professional personnel. Incorrect parameter
settings may result in noncompliance with local grid connection requirements
and aect the normal operations of the equipment.
● If the DC power supply is connected but the AC power supply is disconnected,
the inverter will report a Grid Failure alarm. The inverter can start properly
only after the power grid recovers.
Procedure
Step 1 At the AC switch between the inverter and the power grid, use a multimeter to
measure the grid voltage and ensure that the voltage is within the allowed
operating voltage range of the inverter. If the voltage is not in the allowed range,
check the circuits.
Step 2 Turn on the AC switch between the inverter and the power grid.
Step 3 Turn on the DC switch (if any) between the PV strings and the inverter.
Step 4 (Optional) Remove the locking screw next to the DC SWITCH on the inverter.
Step 5 Set the DC SWITCH to ON.
Step 6 Observe the LED indicators to check the status of the inverter.
Table 6-2 Indicator description
Category
Status Description
Running
indication
LED1 LED2 -
Steady
green
Steady green The inverter is operating
in grid-tied mode.
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 6 Commissioning
Issue 10 (2024-05-14) Copyright © Huawei Digital Power Technologies Co., Ltd. 48
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