SMA SUNNY TRIPOWER CORE1 Operating Manual page 28

6 Electrical Connection
6. Thread the AC cable through the cable gland into the AC Connection Unit. If necessary,
slightly loosen the swivel nut of the cable gland.
7. Dismantle the AC cable.
8. Strip off the insulation of L1, L2, L3, N and PE by 30 mm.
9. Connect the grounding conductor to the ground
terminal. Use a Torx screwdriver (TX 25) to slightly
loosen one of the screws with which the clip and
connection plate are connected to the ground
connection and to completely remove the other
screw. Then place the grounding conductor onto the
connection plate, route the clip via the grounding
conductor and tighten both screws with a Torx
screwdriver (TX 25) (torque: 6 Nm).
10. Ensure that the conductor is on the connection plate.
11. 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 of the
terminal using a Allen key (AF 8) (20 Nm torque for
a conductor cross-section of 35 mm² to 95 mm²;
30 Nm torque for a cable cross-section of
120 mm²).
12.
Danger to life due to electric shock
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 utility grid is connected with a neutral conductor, the bridge must always be removed.
• When N is present and connected to the
corresponding terminal, remove the bridge
installed as standard between N and the
enclosure ( ).
13. Ensure that the correct conductors are assigned to all the terminals.
14. Make sure that all conductors are securely in place.
28 STP50-40-BE-en-12
WARNING
SMA Solar Technology AG
L 1
L 2
L 3
N
L 1
2
L 2 1
L 3
N
L 1
L 2
L 3
N
Operating manual