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TMS320F28P550SJ: What does "98% in AFCI" mean?

alfred wen
Prodigy 130 points

Part Number: TMS320F28P550SJ

In Arc_fault customer training.ppt, the Live DC arc fault detection test is introduced: Achieve >98% detection accuracy at UL 1699B test conditions. 

What does it mean to reach 98%? Does it mean that among 100 arc detections, 98 are real arcs? Or does it mean that 98 arcs can be detected for every 100 arcs that occur?
 
 
  • 0
    TI__Expert 5935 points

    Hi Alfred

    98% accuracy means 98 areal arc and 2 are false alarm. In real application, false alarm can be reduced by adding redundancy to arc detection. That means when arc is detected repeatedly, the action is taken.

    Thank you 

    Amir Hussain