SMA SUNNY CENTRAL 900CP XT - DC Connection with DC Busbar Option; Cable and Terminal Lug Requirements; Connection Area with DC Busbar Option

10 DC Connection SMA Solar Technology AG
46 SCCPXT-IA-D7-en-42 Installation Manual
10.3 DC Connection with DC Busbar Option
10.3.1 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.
10.3.2 Connection Area with DC Busbar Option
Figure19: Dimensions of the DC busbar (example)
Position Designation
A Busbar for grounding cable
B Connection lug for DC‒ cable