6 Commissioning
6.1 Check Before Power-on
No. Acceptance Criteria
1 The solar inverter is installed correctly and securely.
2 The DC switches and the downstream AC switch are OFF.
3 All cables are connected correctly and securely.
4 The installation space is proper, and the installation environment
is clean and tidy.
5 The maintenance compartment door is closed and the screws are
secured.
6 Unused DC input terminals are sealed.
7 Unused USB and RESET ports are plugged with watertight caps.
6.2 Powering On the SUN2000
Precautions
When LED2 is steady green (meaning that the inverter is grid-tied), do not turn on
any DC switch. Otherwise, the inverter may be damaged because the insulation
resistance is not detected.
SUN2000-(100KTL, 110KTL, 115KTL)-M2
User Manual 6 Commissioning
Issue 02 (2022-06-30) Copyright © Huawei Technologies Co., Ltd. 61