Connecting The Battery-Backup Appliances - SMA SUNNY TRIPOWER 5.0 SMART ENERGY Operating Manual

7 Electrical Connection
7.2.4

Connecting the Battery-Backup Appliances

Backup loads, that are supplied from the battery in the event of a power outage, can be connected
to the inverter.
Danger to life due to electric shock when touching live system components
during battery-backup operation
Even if the AC miniature circuit breaker and the DC load-break switch of the inverter are
disconnected, parts of the system may still be live when the battery is switched on due to battery-
backup operation.
• Prior to performing any work on the inverter, disconnect it from all voltage sources as
described in this document.
• Ensure that the grounding conductors of the electric circuits of the battery-backup
appliances are connected to the grounding busbar of the house connection box.
Procedure:
1. Disconnect the AC and backup miniature circuit breaker from all 3 line conductors and secure
against reconnection.
2. Place a notice on the subdistribution indicating the
battery-backup operation of the inverter.
3. Ensure that the DC load-break switch has been
switched off and secured against reconnection.
4. Ensure that the battery is switched off.
5. Label the AC connector for connection to the backup loads to prevent subsequent confusion
with the AC connector for connection to the utility grid.
42 STPx0-3SE-40-BE-en-10
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