SMA PVO-N-20 - Manual (Page 36)

7 Electrical Connection SMA Solar Technology AG
36 PVO-BOX-IA-en-10 Installation Manual
The following DC connection options are possible (as examples):
Figure 13: DC connection options for a multi-string inverter
Connection Options
Cable Connections
Option Description
A Multi-string inverter with no DC input assigned - all operating modes
B Multi-string inverter with one DC input area completely assigned – all operating modes
C Multi-string inverter with all DC inputs completely assigned – all operating modes
Connection Description SUNCLIX
1 PV+ connection cable SMA PV Offset Box to inverter or
Y distribution 2 x positive (+)
2 PV − connection cable SMA PV Offset Box to inverter or
Y distribution 2 x negative ( − )
3 PV+ connection cable PV array to inverter 1 x positive (+)
4 PV − connection cable PV array to inverter 1 x negative ( − )
5 PV+ connection cable Y distribution to inverter 1 x positive (+),
1 x negative ( − )
6 PV − connection cable Y distribution to inverter 1 x negative ( − ),
1 x positive (+)
7 PV+ Y distribution 2 x negative ( − ),
1 x positive (+)