SMA SUNNY BOY 3.0-US Instrucciones De Instalación página 30

6 Electrical Connection
• Unscrew all six screws with a Torx screwdriver (TX 25) and carefully remove the
enclosure lid towards the front. While doing so, note that the display assembly on the
enclosure lid of the Connection Unit and the communication assembly in the Connection
Unit are connected via a ribbon cable. During the first installation, the display cable is to
be connected only to the display assembly on the enclosure lid of the Connection Unit.
• Disconnect the display cable from the
socket on the communication assembly.
During the first installation, the display
cable is to be connected only to the display
assembly on the enclosure lid of the
Connection Unit.
4. Remove the adhesive tape from the enclosure opening for the AC connection.
5. Insert the conduit fitting into the opening and tighten from the inside using the counter nut.
6. Attach the conduit to the conduit fitting.
7. Guide the conductors from the conduit into the inverter. In the process, lay the conductors in
the inverter such that they do not come into contact with the communication assembly.
8. Connect the equipment grounding conductor of the utility grid to the equipment grounding
terminal:
• Strip the insulation of the equipment grounding conductor by 18 mm (0.71 in).
• Insert the screw through the spring washer,
the clamping bracket and the washer.
• Guide the equipment grounding conductor between the washer and clamping bracket
and tighten the screw with a Torx screwdriver (TX 25) (torque: 6 Nm ± 0.3 Nm
(53.10 in-lb ± 2.65 in-lb)).
9. Plug the connecting terminal plate for the AC
connection in the AC-out slot in the inverter, and
tighten it with a flat-blade screwdriver (blade
width: 3.5 mm (0.14 in)) (torque 0.3 Nm
(2.65 in-lb)).
10. Ensure that the connecting terminal plate is securely in place and the screws are tightened.
11. Strip off the conductor insulation of L1, L2 and, if applicable, N by max. 18 mm (0.71 in).
30 SB30-77-1SP-US-40-IA-xx-13
SMA Solar Technology America LLC
Installation Manual