Huawei Proprietary and Confidential                                     
Copyright © Huawei Technologies Co., Ltd. 
 
 
Network Application 
The SUN2000 applies to grid-tied PV power systems for commercial rooftops and large 
power stations. A typical grid-tied PV power system consists of PV strings, grid-tied inverters, 
and AC distribution units (ACDUs), as shown in Figure 2-2. 
Figure 2-2 SUN2000 network application 
 
 
 
A model in the range from SUN2000-8KTL to SUN2000-23KTL can connect to the low-voltage power 
grid directly without connecting to a transformer. 
Power Grid Modes for the SUN2000 
All SUN2000 models except the SUN2000-28KTL support the power grid modes TN-S, 
TN-C, TN-C-S, and TT, as shown in Figure 2-3. The SUN2000-28KTL supports the IT mode, 
as shown in Figure 2-4.