SMA Sunny Island 5048 Installation Instructions Manual page 39

SMA
Technologie AG
1. Sheathe the cable screw connection over the three-conductor cable and then insert
the conductor into the housing of the Sunny Island 5048.
2. Install the M25 metric-thread cable screw connection (included in delivery) on the
"AC1 – Loads/Sunny Boys" cable feed-through.
- Insert the cable screw connection thread into the cable feed-through opening.
- Screw the counter nut onto the cable screw connection thread inside the
housing and tighten it.
3. Remove the protective insulation from each of the three wires.
4. Install the three wires PE, N and L onto AC1: Following the specified sequence,
insert the appropriate wire into the appropriate PE, N or L "AC1 (Loads/Sunny
Boys)" spring-type terminals.
Connecting in a 1-phase parallel system:
Connect all 1-phase parallel Sunny Island 5048 devices with the same cross-
sections and cable lengths.
Connecting in a 3-phase parallel system:
Always install the master on phase L1, slave 1 on L2 and slave 3 on L3. This
installation has a right-hand rotary field.
If a phase fails within a three-phase grid, the cluster continues to run. In order to
protect your loads, you may require phase monitoring or a motor overload switch.
Technical Description
Electrical Connection
SI5048-11:EE4206 Page 39