SMA SUNNY ISLAND 6.0H - Structures of a Multicluster System; Structures for Off-Grid Systems

3 Functions and Design
SMA Solar Technology AG
System Description 15SI44M-80H-13-MC-IA-en-10
3.2 Structures of a Multicluster System
3.2.1 Structures for Off-Grid Systems
Multicluster-Box only with Generator
MAIN
CLUSTER
EXTENSION
CLUSTER 1
EXTENSION
CLUSTER 3
MULTICLUSTER-BOX
GENERATOR
LOAD
PV SYSTEM
Figure 2: Principle of a multicluster system with Multicluster-Box and generator
If only the generator as external energy source is connected to the Multicluster-Box, the multicluster system must be
configured via the installation assistant for Island mode.
Multicluster-Box with Grid-Connect-Box, Utility Grid and Generator
MAIN
CLUSTER
EXTENSION
CLUSTER 1
EXTENSION
CLUSTER 3
GRID-CONNECT-
BOX
MULTICLUSTER-BOX
GENERATOR
LOAD
PV SYSTEM
UTILITY GRID
Grid-connection point
with energy meter
of the
electric utility company
TN or TT system
Figure 3: Principle of a multicluster system with Multicluster-Box, GridConnect Box, utility grid, and generator