Dc Connection; Requirements For The Dc Connection - SMA SUNNY BOY 3.0-US Instructions D'installation

6 Electrical Connection
7. Stick the terminal block into the SPS slot on the
communication assembly in the inverter.
8. Ensure that the terminal block is securely in place.
9. Ensure that all conductors are correctly connected.
10. Ensure that the conductors sit securely in the terminal points. Tip: To release the conductors
from the terminal block, open the terminal points using a suitable tool.
11. Install switch in desired position (e.g. next to the inverter or as switch/outlet combination
optionally at short distance from the inverter (to max. 10 m (393.7 in))).
12. Connect the other end of the cable directly to the switch.
6.6

DC Connection

6.6.1

Requirements for the DC Connection

Connection options:
One string each can be connected to each DC input of the inverter during normal operation. The
DC inputs A and B can however be operated in parallel, and thus up to three strings can be
connected to inverters with two DC inputs and up to four strings to inverters with three DC inputs.
The following device types have two MPP trackers and therefore two DC inputs (A and B):
• SB3.0-1SP-US-41
• SB3.8-1SP-US-41
The following device types have three MPP trackers and therefore three DC inputs (A, B, and C):
• SB5.0-1SP-US-41
• SB6.0-1SP-US-41
• SB7.0-1SP-US-41
• SB7.7-1SP-US-41
46 SBxx-1SP-US-41-IA-xx-12
SMA Solar Technology AG
FCC ID: SVF-KP20
IC: 9440A-KP20
A B
D-IN SPS
Installation Manual