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 Energy System Home")

Procedure:

  1. On the Sunny Island, connect the power cable to the AC2 Gen/Grid. When doing so, connect the line conductor to AC2 Gen/Grid L and the neutral conductor to AC2 Gen/Grid NTT( > Connecting the AC Power Cable).
  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