Product Description


The Sunny Boy Storage uses the connected battery for the intermediate storage of excess PV energy in the SMA Flexible Storage System. For this purpose, the Sunny Boy Storage receives the feed-in and purchased energy data from the energy meter. This data is used by the Sunny Boy Storage to control the charging and discharging of the battery.

The use of an automatic transfer switching device is required in the battery-backup system. In the event of grid failure, the automatic transfer switching device disconnects the PV system, loads and the Sunny Boy Storage from the utility grid and creates a battery-backup grid. The battery-backup grid supplies loads that should continue to be supplied with electricity in the event of grid failure. In the event of grid failure, the Sunny Boy Storage supplies the loads with energy after a short switching time. The PV system supplies additional energy that can be used to supply the loads and charge the battery.

The use of an automatic transfer switching device is not required in limited battery-backup systems. To build a limited battery-backup system, you must attach an outlet and a switch to the inverter. You can connect a load to the outlet, which should continue to be supplied with power from the battery in the event of grid failure. The secure power supply operation is not automatically enabled in the event of a grid failure, neither is it automatically disabled once the utility grid is available again. During secure power supply operation, the load can only be supplied with energy as long as there is stored energy available in the battery.

Secure power supply operation in Flexible Storage Systems with backup power supply not possible

If the inverter is used in a battery-backup system and connected with an automatic transfer switch, the secure power supply operation is not available.

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Design of the inverter

Position

Designation

A

Power Unit

B

Enclosure lid of the Power Unit

C

Enclosure lid for the Connection Unit

D

Connection Unit

E

Warning label with compliance information

F

Type label

The type label uniquely identifies the inverter. The type label must remain permanently attached to the product. You will find the following information on the type label:

  • Inverter device type (Model)

  • Serial number of the Power Unit (Serial No. Power Unit or S/N Power Unit)

  • Date of manufacture

  • Device-specific characteristics

G

Additional type label

The additional type label must remain permanently attached to the product. You will find the following information on the additional type label:

  • Device type (Model)

  • Inverter serial number (Serial number device or S/N device)

  • Identification key (PIC) for registration in Sunny Portal

  • Registration ID (RID) for registration in Sunny Portal

  • WLAN password (WPA2-PSK) for the direct connection to the user interface of the inverter via WLAN

H

LEDs

The LEDs indicate the operating state of the inverter.