SagFighter Performance Data

This paper presents the actual and calculated performance data for UST’s SagFighter.™


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A voltage sag is the drop below 90% of the RMS voltage on a power system for a duration of time ranging from a cycle of the AC voltage to a minute. They are far more common than interruptions, and can damage many types of industrial equipment and processes. A voltage sag lasting only 100 milliseconds can cause a shut-down of equipment in a manufacturing process leading to hours of down time and lost revenue.