4 Product Overview
SMA Solar Technology AG
Operating manual
MC-BOX-6-3-BE-en-30
12
4.3
System Structure
SUNNY ISLAND
Load contactor
(MAIN AC DISTRIBUTION BOARD)
MULTICLUSTER BOX
PV main distribution box
(not included in the
delivery)
BATTERY
Generator contactor
GENERATOR
LOAD
PV MODULES
PV INVERTERS
Sunny Island
contactor
BATTERY FUSE
Figure 3: Circuitry principle of a multicluster system – example with Multicluster-Box