The MBUS communication is applicable to medium-voltage grid connection
scenarios and non-low-voltage public grid connection scenarios (industrial
environment).
In the networking diagram, indicates the power cable, indicates the power ow
direction, and and indicate the signal ow.
Figure 5-1 RS485 networking (SmartLogger)
(A) PV string
(B) SUN2000 (C) AC combiner box
(D) Transformer station (E) Power grid (F) SmartLogger
(G) Management system
SUN2000-(100KTL, 110KTL, 125KTL) Series
User Manual 5 Electrical Connections
Issue 07 (2020-09-15) Copyright © Huawei Technologies Co., Ltd. 40