Sunny Central: Connecting Dc - SMA SUNNY CENTRAL STRING-MONITOR US Technical Description

SMA Solar Technology AG
7.6.1 Sunny Central: Connecting DC+
The DC+ cable of the Sunny Central is connected to the
terminals (A) in the Sunny Central String-Monitor.
1. Strip the cable by approx. 1.1 in. (28 mm).
2. Loosen the hexagon screw with a wrench
counterclockwise.
3. Put the hexagon screw and the washer aside.
4. Pull the screw terminal from the rail.
5. Open the screw terminal using a hexagon (allen) key counterclockwise.
6. Insert the cable into the Sunny Central String-Monitor as described in chapter 5 "Attaching the
Cable Conduits" (page 28).
7. Plug the copper inner conductor of the cable into the screw terminal.
8. Tighten the screw terminal using an Allen key clockwise. The required torque is 325 in-lb.
9. Put the screw terminal on the rail.
10. Put the washer on the screw terminal and the hexagon screw in the hole of the screw terminal.
11. Tighten the hexagon screw using a wrench clockwise. The required torque is 222 in-lb.
12. Connect the second DC+ cable of the Sunny Central as described above.
☑ The DC+ cable of the Sunny Central is connected.
Technical Description
Wire size
350 kcmil
Electrical Connection
1.1 in.
Torque
325 in-lb
SSMUS-TUS094511
A
51