SMA SSM-U-1615 - Manual (Page 32)

7. Connect the DC main cables to the busbars for the DC main cables (torque: 60 Nm) (see
Section 6.1, page 25). To do this, use only the fastening material already attached to the
busbars and do not connect more than two DC main cables to each busbar.
8. Ensure that the DC main cables are securely attached.
9. Secure the DC main cables to the external cable support rail.
6.3.4 Connecting the DC Main Cables to the Busbar using V Box
Terminals
6.3.4.1 Requirements and Conditions
Cable requirements for connection with V box terminals:
☐ Use copper or aluminum cables only.
☐ The cables must be designed for the maximum PV voltage.
☐ The cables must have double or reinforced insulation.
☐ Maximum number of cables per potential: 2
☐ Permitted cable cross-section: 70 mm
2 to 300 mm 2
☐ Permitted conductor cross-section:
Cable type Conductor cross-section per potential
Round, single-strand 70 mm 2 to 150 mm 2
Round, multi-strand 70 mm 2 to 300 mm 2
Sectoral, single-strand 70 mm 2 to 240 mm 2
Sectoral, multi-strand 70 mm 2 to 240 mm 2
Additionally required mounting material (not included in the scope of delivery):
☐ Clean cloth
☐ Ethanol cleaning agent
6 Installation SMA Solar Technology AG
Operating Manual SSMUXX15-BE-en-10 32