Challenges in Arc Fault Detection for High Power DC applications*

In AC installations the Arc Fault Detection Devices are well established. However emerging high power (high current) DC application fields represent several challenges wit respect to arc faults and their detection. This paper presents arc fault signals in time domain and in frequency domain, discusses challenges associated with arc fault detection in the DC application domain and application of the UL1699B standard testing procedure for arc fault detection development in high current applications.