SMA SUNNY CENTRAL 900CP XT - Grounding Connection; Cable and Terminal Lug Requirements; Connecting the Grounding Cables

9 Grounding Connection SMA Solar Technology AG
38 SCCPXT-IA-D7-en-42 Installation Manual
9 Grounding Connection
9.1 Cable and Terminal Lug Requirements
Cables:
☐ Use copper or aluminum cables only.
☐ Maximum cable cross-section: 400 mm
2
Terminal lugs:
☐ Use tin-plated terminal lugs only.
☐ Only use the nuts, screws and washers included in the scope of delivery for the connection.
☐ Always connect two-hole terminal lugs with two screws.
☐ The terminal lugs must be designed for temperatures of at least +95°C.
☐ The width of the terminal lugs must exceed the washer diameter (32 mm). This will ensure that the defined torques
are effective over the whole surface.
9.2 Connecting the Grounding Cables
Figure15: Assembly of the connection for one terminal lug
Equipotential bonding
• Ground the Sunny Central in accordance with the applicable regulations.
Position Designation
ANut
BSpring washer
CFender washer
D Aluminum busbar