SMA PVO-N-20 User 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 (+)