SMA SSM8-21-BS - Manual (Page 28)

6 Electrical Connection SMA Solar Technology AG
28 SSMxx-21-IA-BS-JP-en-20 Installation Manual
6.5.2 Connecting DC Main Cables to the Busbar
Figure 12: Assembly of the connection with a ring terminal lug
Additionally required material (not included in the scope of delivery):
☐ Ring terminal lugs (size: for M12 screw)
☐ Clean cloth
☐ Ethanol cleaning agent
Procedure:
1. Strip off the DC main cable insulation.
2. Fit the DC main cables with ring terminal lugs.
3. Clean the contact surfaces using a clean cloth and ethanol cleaning agent. Do not touch the contact surfaces after
cleaning.
4. Connect the DC main cables in accordance with the circuit diagram (torque: 60 Nm). Only use the supplied
fastening material and connect a maximum of two adjacent DC main cables to each busbar.
5. Secure the DC main cables to the cable support rail.
Position Designation
A Screw M12
B Spring washer
C Fender washer
D Tin-plated copper bar
E Tin-plated ring terminal lug
F Nut M12