SMA PVO-N-20 - Manual (Page 27)

SMA Solar Technology AG 7 Electrical Connection
Installation Manual PVO-BOX-IA-en-10 27
Connection of several SMA PV Offset Boxes:
The AC connection can be looped through to several SMA PV Offset Boxes. In total, you can connect
up to 50 SMA PV Offset Boxes to one AC connection in this way.
Figure 11: Connection of several SMA PV Offset Boxes
7.2.2 Connecting the SMA PV Offset Box to the Electricity Grid (AC)
1. Slightly release the swivel nut of the cable gland.
2. Strip the AC cable by by 130 mm.
3. Strip the insulated wires of the AC cable by 7 - 8 mm.
4. Route the AC cable through the cable gland to the AC terminals in the SMA PV Offset Box.
Description Explanation
B Fault-free operation
F Fault
1 Terminal 1 of the fault indication relay
2 Terminal 2 of the fault indication relay
3 Terminal 3 of the fault indication relay