SMA POWER BALANCER - Manual (Page 15)

SMA America, LLC Configuration
Installation Guide SBUS-PowBal-IUS102810 15
5.1.1 Off
The SMA Power Balancer is deactivated at the factory.
– In the event of a grid voltage fault or device fault of an inverter, only the affected inverter
disconnects from the grid. The other two inverters continue to run at an undiminished power
level.
5.1.2 Power Guard
Select this setting if, in the event of a failure, the unbalanced load should be limited to a defined
value over a 10-minute average.
If one of the three inverters indicates a grid voltage fault or device fault and stops feeding
in, the other two inverters automatically limit their power to a defined value over a 10 minute
average.