Sunny Boy Installation Manual

6 Electrical Connection
SMA Solar Technology AG
Installation Manual SBxx-1SP-US-41-IA-xx-10 41
Requirements:
☐ The technical requirements of the multifunction relay must be met (see Section10 "Technical
Data", page65).
☐ All electrical installations must be carried out in accordance with the local standards and the
National Electrical Code
®
ANSI/NFPA 70 or the Canadian Electrical Code
®
CSA C22.1.
Requirements on･the conductors:
• Conductor cross-section: 0.2mm² to 1.5mm² (24AWG to 16AWG)
• The conductor type and wiring method must be appropriate for the application and location.
Procedure:
1.
DANGER
Danger to life due to high voltages
• Ensure that the inverter is disconnected from all voltage sources (see Section8,
page61).
2. Remove the sealing plug from the enclosure opening on the multifunction relay.
3. Insert the conduit fitting into the opening and tighten from the inside using the counter nut.
4. Attach the conduit to the conduit fitting.
5. Guide the conductors from the conduit into the inverter.
6. Strip off the conductor insulation by max. 9mm (0.35in).
7. Connect the conductors to the 3-pole terminal block
according to the circuit diagram, depending on the
operating mode (see Section6.4.3, page37).
Ensure that the conductors are plugged completely
into the terminal points (round openings) up to their
insulation.
1
2
3
8. Stick the terminal block into the MFR slot on the
communication assembly in the inverter.
D-IN
SPS
A B
FCC ID: SVF-KP20
IC: 9440A-KP20
Max. 30V DC
DISPLAY
BAT MFR
USB
MFR
Max. 30V DC
USB
BA
T
9. Ensure that the terminal block is securely in place.
10. Ensure that all conductors are correctly connected.
11. 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.
ENGLISH