SMA SSM8-21-BS - Manual (Page 29)

SMA Solar Technology AG 6 Electrical Connection
Installation Manual SSMxx-21-IA-BS-JP-en-20 29
6.5.3 Connecting DC Main Cables to the Terminals
The terminals are available as accessories.
Mounting Terminals to the Busbar
Figure 13: Connection of terminals to busbars
Additionally required material:
☐ Ethanol cleaning agent
☐ Clean cloth
Procedure:
1. Wipe the contact surfaces on the busbar and the terminal with a clean cloth and ethanol cleaner. Do not touch the
surfaces once they have been cleaned.
2. Mount the terminals on the busbar (torque: 60 Nm). Only use the supplied screws, nuts and washers and make sure
that the screw heads always point backwards.
Connecting Copper Cables to the Terminals
1. Strip off the DC main cable insulations by 35 mm.
2. Connect the DC main cables to the terminals:
• Unscrew the set screw with an Allen key.
• Insert the DC main cables into the terminal from below. Ensure correct polarity.
• Fasten the set screw (torque: 32 Nm).
3. Ensure that the DC main cables are securely in place.
Position Designation
A Screw M12
B Spring washer
C Fender washer
D Tin-plated copper bar
E Terminal
F Nut M12