3 phase guard, Phase guard – SMA POWER BALANCER User Manual

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Configuration

SMA America, LLC

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SBUS-PowBal-IUS102810

Installation Guide

5.1.3 Phase Guard

This operating mode enables the implementation of three-phase grid voltage monitoring.
– If one of the 3 inverters indicates a grid voltage fault and stops feeding in, the other two

inverters also disconnect from the grid automatically.

– If one of the 3 inverters indicates a device fault and stops feeding in, the other two inverters

are not affected and continue to feed in at full power.

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