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Arc fault model for low-voltage AC systems

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4 Author(s)
Huaren Wu ; Dept. of Electr. Eng., Nanjing Normal Univ., China ; Xiaohui Li ; Stade, D. ; Schau, H.

A lot of three-phase arc fault experiments show that arc voltages of three-phase arc fault in low-voltage ac systems vary stochastically. These arc voltages cannot be expressed exactly by formula. This paper introduces a three-phase arc fault model for low-voltage ac systems derived by probability method according to the characteristics of three-phase fault arcs. This model can be used to calculate minimum three-phase arcing fault current for setting the relay.

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Power Delivery, IEEE Transactions on  (Volume:20 ,  Issue: 2 )