SMA MULTICLUSTER BOX 36 - Manual (Page 7)

SMA Solar Technology AG 2 Safety
Operating Manual MC_BOX_36-BE-en-20 7
2 Safety
2.1 Intended Use
The Multicluster Box is a component of the SMA multicluster technology for off-grid systems. The
Multicluster Box is a main AC distribution board to which you can connect up to twelve three-phase
clusters. Each cluster consists of three Sunny Island inverters of the same device type with parallel
DC-side connection.
Figure 1: Circuitry principle
Connection requirements
The Multicluster Box is designed for connection to TN systems. The Multicluster Box must
be grounded prior to commissioning (see Section 7.9, page 33).