SMA SSM-U-1615 - Manual (Page 33)

6.3.4.2 Installing the Box Terminal on the Busbar
Assembly of the Connection with One Box Terminal
Figure 13: Assembly of the Connection with One Box Terminal
Position Designation
A Screw M12
B Washer
C Tin-plated copper busbar
D Fender washer
E Spring washer
F Nut M12
G Box terminal
Installing the Box Terminal on the Busbar
1. Ensure that the DC subdistribution is switched off and secured against reconnection (see
Section 8 "Disconnecting and Reconnecting", page 46).
2. Ensure that the inverter is fully disconnected from voltage sources on the DC side and secured
against reconnection (see inverter manual).
3. In the DC subdistribution, remove the fastening material for the DC main cables from the
busbars.
4. Clean the contact surfaces on the busbar and box terminal using a clean cloth and ethanol
cleaning agent. Do not touch the contact surfaces after cleaning.
5. Mount the box terminals on the busbar (torque: 60 Nm). To do this, use only the fastening
material already attached to the busbars.
6 Installation SMA Solar Technology AG
Operating Manual 33 SSMUXX15-BE-en-10