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Why does my ATS48 Soft Starter show PHF fault when stopping the motor?

Article available in these languages: Spanish

Issue:
ATS48 Soft Starter shows PHF fault when stopping the motor.

Product Line:
ATS48 soft starters

Environment:
All models, All serial numbers

Cause:
Information unavailable in current literature.

Resolution:
PHF is caused by too great of an imbalance in the current draw of the output phases.  If one phase is pulling considerably more or less current than the other two, PHF can occur.   PHF can also occur if one or more output phases are pulling no current (open phase).

Released for: Schneider Electric Malaysia
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Range:
Altistart 48
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Range:
Altistart 48

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