Electrical Connection SMA Technologie AG
Page 40 SI5048-11:EE4206 Technical Description
6.3.3 AC2 (Generator/Grid)
The sub-distribution of the generator/public grid is connected to the AC2 output of the
Sunny Island 5048. Wire AC2 in the following sequence:
1. Sheathe a 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
"AC2 – Generator/Grid" cable feed-through.
- Insert the metric-thread 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 AC2: Following the specified sequence,
insert the appropriate wire into the appropriate PE, N or L "AC2 (Generator/
Grid)" spring-type terminals.
1-phase parallel system
In 1-phase parallel systems, also connect the generator or the grid to all slave
devices on AC2. The cable lengths and cross-sections used must be identical.
3-phase system
Always install phase L1 on the master, L2 on slave 1 and L3 on slave 3.
The system does not monitor additional fuses. Check any additional fuses
regularly!
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