SMA Off-Grid Systems - Manual (Page 12)

3 Information on Off-Grid Systems and System Description SMA Solar Technology AG
12 Off-Grid-IS-en-30 Installation - Quick Reference Guide
3.2 Modular Design
3.2.1 Single System
Figure 1: Block circuit diagram
In a single system, one Sunny Island forms a single-phase stand-alone grid.
3.2.2 Single-Cluster System (Single-Phase)
Figure 2: Block circuit diagram
Required device types for single-phase single-cluster systems
In single-phase single-cluster systems, the Sunny Island inverters must be device type SI6.0H-11 or SI8.0H-11.