SMA Sunny Tripower CORE1-US Instructions D'installation page 32

6 Electrical Connection
10. Connecting the equipment grounding conductor to the DIN rail terminal:
• Strip the insulation of the equipment grounding conductor by 18 mm (0.7 in).
• Plug the equipment grounding conductor into
the DIN rail terminal and tighten the screw with
a flat-blade screwdriver (M6, torque: 3.2 Nm
to 3.7 Nm (28 in-lb to 33 in-lb)).
11. Strip off the conductor insulation of L1, L2, L3 and, if applicable, N by 27 mm (1.06 in) each.
12. In the case of finely stranded wire, provide conductors L1, L2, L3 and, if applicable, N with a
bootlace ferrule.
13. Depending on the grid configuration, connect L1,
L2, L3 and, if necessary, N to the terminals
according to the label. To do so, position each
conductor as far as they will go into the
corresponding terminal and tighten the screw on the
terminal (TX 30, length: 50 mm (2 in), torque:
14 Nm (126 in-lb)).
14.
Danger to life due to electric shock caused by the presence of a bridge
between N and the enclosure when connecting a utility grid with neutral
conductor
The inverter is delivered with a bridge between N and the enclosure as standard. The
bridge is absolutely essential if the connection to a utility grid is established without a neutral
conductor.
• If the connection to a utility grid is established with a neutral conductor, the bridge must
always be removed as described in the next step.
15. When N is present and connected to the
corresponding terminal, remove the bridge installed
as standard between N and the enclosure (
do so, unscrew the screw of the terminal N and the
screw of the grounding point (
bridge from the inverter (TX 30, length: 50 mm
(2 in)).
16. Ensure that the correct conductors are assigned to all the terminals.
17. Make sure that all conductors are securely in place.
32 STP33-62-US-41-IA-xx-13
WARNING
). To
) and remove the
SMA Solar Technology AG
1
2
2 L 1
L 2 1
L 3
N
L 1
L 2
L 3
N
Installation Manual