SMA SB 4200TL Multi-String - Manual (Page 12)

Device Description SMA Technologie AG
Page 12 SB4200-12:FE4804 Operating Instructions
Even nominal data of current, voltage and power of the two strings may be different
as long as they do not exceed the specifications listed in chapter 6 "Technical Docu-
mentation" (page 41).
Fig. 3.2: Block circuit diagram and typical use of the Sunny Boy 4200TL Multi-
String
The power converted in all two input units (DC/DC converters) is fed to the connected
grid with one common inverter module.
Due to this design the specific costs are kept low and system management can be op-
timized.
MPP
MPP
DC/DC Converter
DC/DC Converter
System Control
Public
Utility
Common
Inverter
Grid
Current
Control
MSD Commu-
nication
RCB BFS
DC-Bus
String A
String B
MPP