FAQ > Voltshield > AVS3P-0
Click on the questions to view answer Phase imbalance?
If the voltage between any of the 3 phases differs by more than 4.8% the unit will alarm.
Does the unit on both 50 and 60Hz supplies?
Yes the unit will automatically detect the operating frequency and alarm if these stray outside their limits. Refer to spec for values.  
Phase rotation detection?
Yes the unit will detect and alarm if the phases sequence has been accidentally reversed.

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