Connecting the Utility Grid in the System for Increased Self-Consumption

Qualified person

2049399436

Requirements:

  • The system may not be a battery-backup system or an off-grid system.

  • For connection of the Sunny Island inverter to the utility grid, there must be a circuit breaker and a type A residual-current device on the distribution board (see circuitry overview in the quick reference guide "SMA FLEXIBLE STORAGE SYSTEM")

Procedure:

  1. On the Sunny Island, connect the power cable to the terminals AC2 Gen/Grid ( > Connecting the AC Power Cable):

    • Connect the line conductor to AC2 Gen/Grid L.

    • Connect the neutral conductor to AC2 Gen/Grid NTT.

  2. Thread the grounding conductor through a ferrite included in the scope of delivery and connect to AC2 Gen/Grid PE ( > Connecting the Grounding Conductor).
  3. If the power cable conductor cross-section is less than 10 mm², thread an additional grounding conductor through the provided ferrite and connect it to the AC1 Loads/SunnyBoys PE terminal ( > Connecting the Grounding Conductor).
Connecting the Battery Fuse to the Sunny Island
Connecting an Automatic Transfer Switch in the Battery Backup System