Installation Guide
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Figure 4: Emergency operation- grid outage
Electrical power generated by the PV system connected directly to sonnenBatterie
Hybrid9.53 (7) continues to be used by the storage system to supply power to the essential
loads (3) and to charge the battery (6).
sonnenBatterie Hybrid 9.53 with sonnenProtect-Plus switches from emergency to grid
operation as soon as the grid starts to deliver electrical power again.
Automatic stop and resumption of the emergency operation
The storage system with sonnenProtect-Plus generates power until a minimum state of
charge of the battery is reached. Thereafter, no further discharge is allowed.
If the discharge has stopped due to the minimum state of charge, the storage system
remains in this state until the directly connected PV system starts to produce power again.
Then, the batteries of the storage system are charged and as soon as the state of charge
exceeds the minimum limit, the surplus power is used to supply power to the essential
loads.